def __init__(self, element, model):
super(ModelerGraphicItem, self).__init__(None, None)
self.model = model
self.element = element
if isinstance(element, ModelerParameter):
icon = QIcon(os.path.dirname(__file__) + '/../images/input.png')
self.pixmap = icon.pixmap(20, 20, state=QIcon.On)
self.text = element.param.description
elif isinstance(element, ModelerOutput):
# Output name
icon = QIcon(os.path.dirname(__file__) + '/../images/output.png')
self.pixmap = icon.pixmap(20, 20, state=QIcon.On)
self.text = element.description
else:
self.text = element.description
self.pixmap = element.algorithm.getIcon().pixmap(15, 15)
self.arrows = []
self.setFlag(QGraphicsItem.ItemIsMovable, True)
self.setFlag(QGraphicsItem.ItemIsSelectable, True)
self.setFlag(QGraphicsItem.ItemSendsGeometryChanges, True)
self.setZValue(1000)
if not isinstance(element, ModelerOutput):
icon = QIcon(os.path.dirname(__file__) + '/../images/edit.png')
pt = QPointF(
ModelerGraphicItem.BOX_WIDTH / 2 -
FlatButtonGraphicItem.WIDTH / 2,
ModelerGraphicItem.BOX_HEIGHT / 2 -
FlatButtonGraphicItem.HEIGHT / 2 + 1)
self.editButton = FlatButtonGraphicItem(icon, pt, self.editElement)
self.editButton.setParentItem(self)
icon = QIcon(os.path.dirname(__file__) + '/../images/delete.png')
pt = QPointF(
ModelerGraphicItem.BOX_WIDTH / 2 -
FlatButtonGraphicItem.WIDTH / 2,
-ModelerGraphicItem.BOX_HEIGHT / 2 +
FlatButtonGraphicItem.HEIGHT / 2 + 1)
self.deleteButton = FlatButtonGraphicItem(icon, pt,
self.removeElement)
self.deleteButton.setParentItem(self)
if isinstance(element, Algorithm):
alg = element.algorithm
if alg.parameters:
pt = self.getLinkPointForParameter(-1)
pt = QPointF(0, pt.y() + 2)
self.inButton = FoldButtonGraphicItem(
pt, self.foldInput, self.element.paramsFolded)
self.inButton.setParentItem(self)
if alg.outputs:
pt = self.getLinkPointForOutput(-1)
pt = QPointF(0, pt.y() + 2)
self.outButton = FoldButtonGraphicItem(
pt, self.foldOutput, self.element.outputsFolded)
self.outButton.setParentItem(self)
def paint(self, painter, option, widget=None):
pt = QPointF(-self.WIDTH / 2, -self.HEIGHT / 2) + self.position
rect = QRectF(pt.x(), pt.y(), self.WIDTH, self.HEIGHT)
if self.isIn:
painter.setPen(QPen(Qt.transparent, 1))
painter.setBrush(QBrush(Qt.lightGray, Qt.SolidPattern))
else:
painter.setPen(QPen(Qt.transparent, 1))
painter.setBrush(QBrush(Qt.transparent, Qt.SolidPattern))
painter.drawRect(rect)
painter.drawPixmap(pt.x(), pt.y(), self.pixmap)
def paint(self, painter, option, widget=None):
pt = QPointF(-self.WIDTH / 2, -self.HEIGHT / 2) + self.position
rect = QRectF(pt.x(), pt.y(), self.WIDTH, self.HEIGHT)
if self.isIn:
painter.setPen(QPen(Qt.transparent, 1))
painter.setBrush(QBrush(Qt.lightGray, Qt.SolidPattern))
else:
painter.setPen(QPen(Qt.transparent, 1))
painter.setBrush(QBrush(Qt.transparent, Qt.SolidPattern))
painter.drawRect(rect)
painter.drawPixmap(pt.x(), pt.y(), self.pixmap)
def drawPipeline(self, qp):
"""Called by paintEvent, it draws figures and link between them.
Parameters
----------
qp : QtGui.QPainter
Performs low-level painting
"""
# If self.levels is empty, indeed, it does not make sense to draw
# something.
if self.levels is None:
return
# define Rep position because they change whan resising main windows
width = self.size().width()
height = self.size().height()
if len(self.levels) != 0:
total_height = (len(self.levels) - 1) * (
STAGE_SIZE_Y + ROUTER_SIZE_Y)
self.zoom = height / total_height
else:
self.zoom = 1
# center figures on screen
last_point = QPointF(width / 2, -GAP_Y / 2 * self.zoom)
for level in self.levels:
total_x = len(level) * STAGE_SIZE_X * self.zoom + (
len(level) - 1 * STAGE_GAP_X * self.zoom)
last_point.setX(width / 2 - total_x / 2)
last_point.setY(last_point.y() + GAP_Y * self.zoom)
for figure in level:
figure.setCenter(QPointF(last_point))
last_point.setX(last_point.x() + STAGE_GAP_X * self.zoom)
# Start to paint
size = self.size()
lines = list()
last_level_pt = list()
for level in self.levels:
current_level_pt = list()
for figure in level:
figure.draw(qp, zoom=self.zoom)
connexion_pt = QPointF(figure.center.x(), figure.center.y()
- figure.size_y / 2 * self.zoom)
current_level_pt.append(QPointF(connexion_pt.x(),
connexion_pt.y() + figure.size_y * self.zoom))
# Link to previous level connexion point(s)
for point in last_level_pt:
lines.append(QLineF(point, connexion_pt))
# Keep points for next level
last_level_pt = list(current_level_pt)
for line in lines:
qp.setPen(QtGui.QPen(self.blue_cta, 1, QtCore.Qt.SolidLine))
qp.drawLine(line)
def __init__(self, element, model):
super(ModelerGraphicItem, self).__init__(None, None)
self.model = model
self.element = element
if isinstance(element, ModelerParameter):
icon = QIcon(os.path.join(pluginPath, 'images', 'input.png'))
self.pixmap = icon.pixmap(20, 20, state=QIcon.On)
self.text = element.param.description
elif isinstance(element, ModelerOutput):
# Output name
icon = QIcon(os.path.join(pluginPath, 'images', 'output.png'))
self.pixmap = icon.pixmap(20, 20, state=QIcon.On)
self.text = element.description
else:
self.text = element.description
self.pixmap = element.algorithm.getIcon().pixmap(15, 15)
self.arrows = []
self.setFlag(QGraphicsItem.ItemIsMovable, True)
self.setFlag(QGraphicsItem.ItemIsSelectable, True)
self.setFlag(QGraphicsItem.ItemSendsGeometryChanges, True)
self.setZValue(1000)
if not isinstance(element, ModelerOutput):
icon = QIcon(os.path.join(pluginPath, 'images', 'edit.png'))
pt = QPointF(ModelerGraphicItem.BOX_WIDTH / 2
- FlatButtonGraphicItem.WIDTH / 2,
ModelerGraphicItem.BOX_HEIGHT / 2
- FlatButtonGraphicItem.HEIGHT / 2 + 1)
self.editButton = FlatButtonGraphicItem(icon, pt, self.editElement)
self.editButton.setParentItem(self)
icon = QIcon(os.path.join(pluginPath, 'images', 'delete.png'))
pt = QPointF(ModelerGraphicItem.BOX_WIDTH / 2
- FlatButtonGraphicItem.WIDTH / 2,
- ModelerGraphicItem.BOX_HEIGHT / 2
+ FlatButtonGraphicItem.HEIGHT / 2 + 1)
self.deleteButton = FlatButtonGraphicItem(icon, pt,
self.removeElement)
self.deleteButton.setParentItem(self)
if isinstance(element, Algorithm):
alg = element.algorithm
if alg.parameters:
pt = self.getLinkPointForParameter(-1)
pt = QPointF(0, pt.y() + 2)
self.inButton = FoldButtonGraphicItem(pt, self.foldInput, self.element.paramsFolded)
self.inButton.setParentItem(self)
if alg.outputs:
pt = self.getLinkPointForOutput(-1)
pt = QPointF(0, pt.y() + 2)
self.outButton = FoldButtonGraphicItem(pt, self.foldOutput, self.element.outputsFolded)
self.outButton.setParentItem(self)
def paint(self, painter, option, widget=None):
myPen = self.pen()
myPen.setColor(self.myColor)
painter.setPen(myPen)
painter.setBrush(self.myColor)
controlPoints = []
endPt = self.endItem.getLinkPointForParameter(self.endIndex)
startPt = self.startItem.getLinkPointForOutput(self.startIndex)
if isinstance(self.startItem.element, Algorithm):
if self.startIndex != -1:
controlPoints.append(self.startItem.pos() + startPt)
controlPoints.append(self.startItem.pos() + startPt +
QPointF(ModelerGraphicItem.BOX_WIDTH /
2, 0))
controlPoints.append(self.endItem.pos() + endPt -
QPointF(ModelerGraphicItem.BOX_WIDTH /
2, 0))
controlPoints.append(self.endItem.pos() + endPt)
pt = QPointF(self.startItem.pos() + startPt + QPointF(-3, -3))
painter.drawEllipse(pt.x(), pt.y(), 6, 6)
pt = QPointF(self.endItem.pos() + endPt + QPointF(-3, -3))
painter.drawEllipse(pt.x(), pt.y(), 6, 6)
else:
# Case where there is a dependency on an algorithm not
# on an output
controlPoints.append(self.startItem.pos() + startPt)
controlPoints.append(self.startItem.pos() + startPt +
QPointF(ModelerGraphicItem.BOX_WIDTH /
2, 0))
controlPoints.append(self.endItem.pos() + endPt -
QPointF(ModelerGraphicItem.BOX_WIDTH /
2, 0))
controlPoints.append(self.endItem.pos() + endPt)
else:
controlPoints.append(self.startItem.pos())
controlPoints.append(self.startItem.pos() +
QPointF(ModelerGraphicItem.BOX_WIDTH / 2, 0))
controlPoints.append(self.endItem.pos() + endPt -
QPointF(ModelerGraphicItem.BOX_WIDTH / 2, 0))
controlPoints.append(self.endItem.pos() + endPt)
pt = QPointF(self.endItem.pos() + endPt + QPointF(-3, -3))
painter.drawEllipse(pt.x(), pt.y(), 6, 6)
path = QPainterPath()
path.moveTo(controlPoints[0])
path.cubicTo(*controlPoints[1:])
painter.strokePath(path, painter.pen())
self.setPath(path)
def draw(self, qpainter, zoom=1):
"""Draw this figure
Parameters
----------
qpainter: PySide.QtGui.QPainter
"""
size_x = self.size_x * zoom
size_y = self.size_y * zoom
pensize = 3
qpainter.setPen(
QtGui.QPen(PipelineDrawer.blue_cta, pensize, QtCore.Qt.SolidLine))
text_pos = QPointF(self.center)
text_pos.setX(text_pos.x() - size_x / 2 + 2)
text_pos.setY(text_pos.y() + pensize)
qpainter.drawText(text_pos, str(self.nb_job_done))
pt = QPointF(self.center)
pt.setX(5)
pos = self.name.find("$$thread_number$$")
if pos != -1:
name = self.name[0:pos]
else:
name = self.name
qpainter.drawText(pt, name)
if self.running == True:
qpainter.setPen(
QtGui.QPen(PipelineDrawer.mygreen, 3, QtCore.Qt.SolidLine))
else:
qpainter.setPen(
QtGui.QPen(PipelineDrawer.blue_cta, 3, QtCore.Qt.SolidLine))
x1 = self.center.x() - (size_x / 2)
y1 = self.center.y() - (size_y / 2)
qpainter.drawRoundedRect(x1, y1, size_x, size_y, 12.0, 12.0)
def showMoveHelper(self, visible=True):
"""show help text In empty HandBoards"""
if visible:
if not self.__moveHelper:
splitter = QGraphicsRectItem(self)
hbCenter = self.rect().center()
splitter.setRect(hbCenter.x() * 0.5, hbCenter.y(), hbCenter.x() * 1, 1)
helpItems = [splitter]
for name, yFactor in [(m18n('Move Exposed Tiles Here'), 0.5),
(m18n('Move Concealed Tiles Here'), 1.5)]:
helper = QGraphicsSimpleTextItem(name, self)
helper.setScale(3)
nameRect = QRectF()
nameRect.setSize(helper.mapToParent(helper.boundingRect()).boundingRect().size())
center = QPointF(hbCenter)
center.setY(center.y() * yFactor)
helper.setPos(center - nameRect.center())
if self.sceneRotation() == 180:
rotateCenter(helper, 180)
helpItems.append(helper)
self.__moveHelper = self.scene().createItemGroup(helpItems)
self.__moveHelper.setVisible(True)
else:
if self.__moveHelper:
self.__moveHelper.setVisible(False)
def paint(self, painter, option, widget=None):
myPen = self.pen()
myPen.setColor(self.myColor)
painter.setPen(myPen)
painter.setBrush(self.myColor)
controlPoints = []
endPt = self.endItem.getLinkPointForParameter(self.endIndex)
startPt = self.startItem.getLinkPointForOutput(self.startIndex)
if isinstance(self.startItem.element, Algorithm):
if self.startIndex != -1:
controlPoints.append(self.startItem.pos() + startPt)
controlPoints.append(self.startItem.pos() + startPt
+ QPointF(ModelerGraphicItem.BOX_WIDTH / 2, 0))
controlPoints.append(self.endItem.pos() + endPt
- QPointF(ModelerGraphicItem.BOX_WIDTH / 2, 0))
controlPoints.append(self.endItem.pos() + endPt)
pt = QPointF(self.startItem.pos() + startPt
+ QPointF(-3, -3))
painter.drawEllipse(pt.x(), pt.y(), 6, 6)
pt = QPointF(self.endItem.pos() + endPt +
QPointF(-3, -3))
painter.drawEllipse(pt.x(), pt.y(), 6, 6)
else:
# Case where there is a dependency on an algorithm not
# on an output
controlPoints.append(self.startItem.pos() + startPt)
controlPoints.append(self.startItem.pos() + startPt
+ QPointF(ModelerGraphicItem.BOX_WIDTH / 2, 0))
controlPoints.append(self.endItem.pos() + endPt
- QPointF(ModelerGraphicItem.BOX_WIDTH / 2, 0))
controlPoints.append(self.endItem.pos() + endPt)
else:
controlPoints.append(self.startItem.pos())
controlPoints.append(self.startItem.pos()
+ QPointF(ModelerGraphicItem.BOX_WIDTH / 2, 0))
controlPoints.append(self.endItem.pos() + endPt
- QPointF(ModelerGraphicItem.BOX_WIDTH / 2, 0))
controlPoints.append(self.endItem.pos() + endPt)
pt = QPointF(self.endItem.pos() + endPt + QPointF(-3, -3))
painter.drawEllipse(pt.x(), pt.y(), 6, 6)
path = QPainterPath()
path.moveTo(controlPoints[0])
path.cubicTo(*controlPoints[1:])
painter.strokePath(path, painter.pen())
self.setPath(path)
def foldInput(self, folded):
self.element.paramsFolded = folded
self.prepareGeometryChange()
if self.element.algorithm.outputs:
pt = self.getLinkPointForOutput(-1)
pt = QPointF(0, pt.y())
self.outButton.position = pt
self.update()
def foldInput(self, folded):
self.element.paramsFolded = folded
self.prepareGeometryChange()
if self.element.algorithm.outputs:
pt = self.getLinkPointForOutput(-1)
pt = QPointF(0, pt.y())
self.outButton.position = pt
self.update()
def distToLine(pt, p1, p2):
"""
Compute the distance from the point `pt` to the line segment [p1,p2]
"""
u = p2-p1
lu = u.x()*u.x() + u.y()*u.y()
pmax = QPointF(max(abs(p1.x()), abs(p2.x())), max(abs(p1.y()), abs(p2.y())))
if lu / (pmax.x()*pmax.x() + pmax.y()*pmax.y()) < 1e-10:
diff = u - p1
return sqrt(diff.x()*diff.x() + diff.y()*diff.y())
dp = pt-p1
proj = (u.x()*dp.x() + u.y()*dp.y())
if proj >= 0 and proj <= lu:
return abs(dp.x()*u.y() - u.x()*dp.y())/sqrt(lu)
elif proj < 0:
return dp.x()*dp.x() + dp.y()*dp.y()
else:
return dist(pt, p2)
def paint(self, painter, option, widget):
arc_rect = 10
connector_length = 5
painter.setPen(self.pen)
path = QtGui.QPainterPath()
if self.source.x() == self.dest.x():
path.moveTo(self.source.x(), self.source.y())
path.lineTo(self.dest.x(), self.dest.y())
painter.drawPath(path)
else:
#Define points starting from source
point1 = QPointF(self.source.x(), self.source.y())
point2 = QPointF(point1.x(), point1.y() - connector_length)
point3 = QPointF(point2.x() + arc_rect, point2.y() - arc_rect)
#Define points starting from dest
point4 = QPointF(self.dest.x(), self.dest.y())
point5 = QPointF(point4.x(),point3.y() - arc_rect)
point6 = QPointF(point5.x() - arc_rect, point5.y() + arc_rect)
start_angle_arc1 = 180
span_angle_arc1 = 90
start_angle_arc2 = 90
span_angle_arc2 = -90
# If the dest is at the left of the source, then we
# need to reverse some values
if self.source.x() > self.dest.x():
point5 = QPointF(point4.x(), point4.y() + connector_length)
point6 = QPointF(point5.x() + arc_rect, point5.y() + arc_rect)
point3 = QPointF(self.source.x() - arc_rect, point6.y())
point2 = QPointF(self.source.x(), point3.y() + arc_rect)
span_angle_arc1 = 90
path.moveTo(point1)
path.lineTo(point2)
path.arcTo(QRectF(point2, point3),
start_angle_arc1, span_angle_arc1)
path.lineTo(point6)
path.arcTo(QRectF(point6, point5),
start_angle_arc2, span_angle_arc2)
path.lineTo(point4)
painter.drawPath(path)
def paint(self, painter, option, widget):
arc_rect = 10
connector_length = 5
painter.setPen(self.pen)
path = QtGui.QPainterPath()
if self.source.x() == self.dest.x():
path.moveTo(self.source.x(), self.source.y())
path.lineTo(self.dest.x(), self.dest.y())
painter.drawPath(path)
else:
#Define points starting from source
point1 = QPointF(self.source.x(), self.source.y())
point2 = QPointF(point1.x(), point1.y() - connector_length)
point3 = QPointF(point2.x() + arc_rect, point2.y() - arc_rect)
#Define points starting from dest
point4 = QPointF(self.dest.x(), self.dest.y())
point5 = QPointF(point4.x(), point3.y() - arc_rect)
point6 = QPointF(point5.x() - arc_rect, point5.y() + arc_rect)
start_angle_arc1 = 180
span_angle_arc1 = 90
start_angle_arc2 = 90
span_angle_arc2 = -90
# If the dest is at the left of the source, then we
# need to reverse some values
if self.source.x() > self.dest.x():
point5 = QPointF(point4.x(), point4.y() + connector_length)
point6 = QPointF(point5.x() + arc_rect, point5.y() + arc_rect)
point3 = QPointF(self.source.x() - arc_rect, point6.y())
point2 = QPointF(self.source.x(), point3.y() + arc_rect)
span_angle_arc1 = 90
path.moveTo(point1)
path.lineTo(point2)
path.arcTo(QRectF(point2, point3), start_angle_arc1,
span_angle_arc1)
path.lineTo(point6)
path.arcTo(QRectF(point6, point5), start_angle_arc2,
span_angle_arc2)
path.lineTo(point4)
painter.drawPath(path)
def movePoints(self, image_name, pt_ids):
if image_name == self.image_name:
data = self.current_data
dm = self.data_manager
points = self.points
cells = self.cells
for pt_id in pt_ids:
pos = data[pt_id]
pos = QPointF(pos.x() / self.min_scale, pos.y() / self.min_scale)
points[pt_id].setPos(pos)
for cid in dm.cell_points[pt_id]:
cell = cells.get(cid, None)
if cell is not None and cell.isVisible():
cell.setGeometry()
def updateSmooth(self):
if self.m_smooth:
if self.m_cursor.x() != self.m_smooth_x or self.m_cursor.y() != self.m_smooth_y:
if abs(self.m_cursor.x() - self.m_smooth_x) <= 0.001:
self.m_smooth_x = self.m_cursor.x()
return
elif abs(self.m_cursor.y() - self.m_smooth_y) <= 0.001:
self.m_smooth_y = self.m_cursor.y()
return
new_x = (self.m_smooth_x + self.m_cursor.x() * 3) / 4
new_y = (self.m_smooth_y + self.m_cursor.y() * 3) / 4
pos = QPointF(new_x, new_y)
self.m_cursor.setPos(pos)
self.m_lineH.setY(pos.y())
self.m_lineV.setX(pos.x())
xp = pos.x() / (self.p_size.x() + self.p_size.width())
yp = pos.y() / (self.p_size.y() + self.p_size.height())
self.sendMIDI(xp, yp)
self.emit(SIGNAL("cursorMoved(double, double)"), xp, yp)
def draw(self, qpainter, zoom=1):
"""Draw this figure
Parameters
----------
qpainter: PySide.QtGui.QPainter
"""
size_x = self.size_x * zoom
size_y = self.size_y * zoom
pensize = 3
qpainter.setPen(
QtGui.QPen(QtCore.Qt.black, pensize, QtCore.Qt.SolidLine))
qpainter.drawEllipse(self.center, size_x / 2, size_y / 2)
text_pos = QPointF(self.center)
text_pos.setX(text_pos.x() - size_x / 2 + 10)
text_pos.setY(text_pos.y() + pensize)
qpainter.drawText(text_pos, str(self.queue_size))
qpainter.setPen(
QtGui.QPen(PipelineDrawer.blue_cta, 3, QtCore.Qt.SolidLine))
def path_link_disabled(basepath):
"""
Return a QPainterPath 'styled' to indicate a 'disabled' link.
A disabled link is displayed with a single disconnection symbol in the
middle (--||--)
Parameters
----------
basepath : QPainterPath
The base path (a simple curve spine).
Returns
-------
path : QPainterPath
A 'styled' link path
"""
segmentlen = basepath.length()
px = 5
if segmentlen < 10:
return QPainterPath(basepath)
t = (px / 2) / segmentlen
p1, _ = qpainterpath_simple_split(basepath, 0.50 - t)
_, p2 = qpainterpath_simple_split(basepath, 0.50 + t)
angle = -basepath.angleAtPercent(0.5) + 90
angler = math.radians(angle)
normal = QPointF(math.cos(angler), math.sin(angler))
end1 = p1.currentPosition()
start2 = QPointF(p2.elementAt(0).x, p2.elementAt(0).y)
p1.moveTo(start2.x(), start2.y())
p1.addPath(p2)
def QPainterPath_addLine(path, line):
path.moveTo(line.p1())
path.lineTo(line.p2())
QPainterPath_addLine(p1, QLineF(end1 - normal * 3, end1 + normal * 3))
QPainterPath_addLine(p1, QLineF(start2 - normal * 3, start2 + normal * 3))
return p1
def path_link_disabled(basepath):
"""
Return a QPainterPath 'styled' to indicate a 'disabled' link.
A disabled link is displayed with a single disconnection symbol in the
middle (--||--)
Parameters
----------
basepath : QPainterPath
The base path (a simple curve spine).
Returns
-------
path : QPainterPath
A 'styled' link path
"""
segmentlen = basepath.length()
px = 5
if segmentlen < 10:
return QPainterPath(basepath)
t = (px / 2) / segmentlen
p1, _ = qpainterpath_simple_split(basepath, 0.50 - t)
_, p2 = qpainterpath_simple_split(basepath, 0.50 + t)
angle = -basepath.angleAtPercent(0.5) + 90
angler = math.radians(angle)
normal = QPointF(math.cos(angler), math.sin(angler))
end1 = p1.currentPosition()
start2 = QPointF(p2.elementAt(0).x, p2.elementAt(0).y)
p1.moveTo(start2.x(), start2.y())
p1.addPath(p2)
def QPainterPath_addLine(path, line):
path.moveTo(line.p1())
path.lineTo(line.p2())
QPainterPath_addLine(p1, QLineF(end1 - normal * 3, end1 + normal * 3))
QPainterPath_addLine(p1, QLineF(start2 - normal * 3, start2 + normal * 3))
return p1
class ImageView2D(QGraphicsView):
focusChanged = pyqtSignal()
"""
Shows a ImageScene2D to the user and allows for interactive
scrolling, panning, zooming etc.
"""
@property
def sliceShape(self):
"""
(width, height) of the scene.
Specifying the shape is necessary to allow for correct
scrollbars
"""
return self._sliceShape
@sliceShape.setter
def sliceShape(self, s):
self._sliceShape = s
self.scene().dataShape = s
self._crossHairCursor.dataShape = s
self._sliceIntersectionMarker.dataShape = s
@property
def hud(self):
return self._hud
@hud.setter
def hud(self, hud):
"""
Sets up a heads up display at the upper left corner of the view
hud -- a QWidget
"""
self._hud = hud
self.setLayout(QVBoxLayout())
self.layout().setContentsMargins(0,0,0,0)
self.layout().addWidget(self._hud)
self.layout().addStretch()
scene = self.scene()
hud.zoomToFitButtonClicked.connect(self.fitImage)
hud.resetZoomButtonClicked.connect(self.doScaleTo)
hud.rotLeftButtonClicked.connect(scene._onRotateLeft)
hud.rotRightButtonClicked.connect(scene._onRotateRight)
hud.swapAxesButtonClicked.connect(scene._onSwapAxes)
scene.axesChanged.connect(hud.setAxes)
def __init__(self, parent, imagescene2d):
"""
Constructs a view upon a ImageScene2D
imagescene2d -- a ImgeScene2D instance
"""
QGraphicsView.__init__(self, parent)
self.setScene(imagescene2d)
self.mousePos = QPointF(0,0)
# FIXME: These int members shadow QWidget.x() and QWidget.y(), which can lead to confusion when debugging...
self.x, self.y = (0,0)
self.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self._isRubberBandZoom = False
self._cursorBackup = None
#these attributes are exposed as public properties above
self._sliceShape = None #2D shape of this view's shown image
self._slices = None #number of slices that are stacked
self._hud = None
self._crossHairCursor = None
self._sliceIntersectionMarker = None
self._ticker = QTimer(self)
self._ticker.timeout.connect(self._tickerEvent)
#
# Setup the Viewport for fast painting
#
#With these flags turned on we could handle the drawing of the
#white background ourselves thus removing the flicker
#when scrolling fast through the slices
#self.viewport().setAttribute(Qt.WA_OpaquePaintEvent)
#self.viewport().setAttribute(Qt.WA_NoSystemBackground)
#self.viewport().setAttribute(Qt.WA_PaintOnScreen)
#self.viewport().setAutoFillBackground(False)
self.setViewportUpdateMode(QGraphicsView.MinimalViewportUpdate)
#as rescaling images is slow if done in software,
#we use Qt's built-in background caching mode so that the cached
#image need only be blitted on the screen when we only move
#the cursor
self.setCacheMode(QGraphicsView.CacheBackground)
self.setRenderHint(QPainter.Antialiasing, False)
self._crossHairCursor = CrossHairCursor(self.scene())
self._crossHairCursor.setZValue(99)
self._sliceIntersectionMarker = SliceIntersectionMarker(self.scene())
self._sliceIntersectionMarker.setZValue(100)
self._sliceIntersectionMarker.setVisibility(True)
#FIXME: this should be private, but is currently used from
# within the image scene renderer
self.tempImageItems = []
self._zoomFactor = 1.0
#for panning
self._lastPanPoint = QPoint()
self._dragMode = False
self._deltaPan = QPointF(0,0)
#FIXME: Is there are more elegant way to handle this?
self.setMouseTracking(True)
# invisible cursor to enable custom cursor
self._hiddenCursor = QCursor(Qt.BlankCursor)
# For screen recording BlankCursor doesn't work
#self.hiddenCursor = QCursor(Qt.ArrowCursor)
def _cleanUp(self):
self._ticker.stop()
del self._ticker
def setZoomFactor(self,zoom):
if self._hud is not None:
self._hud.zoomLevelIndicator.updateLevel(zoom)
self._zoomFactor = zoom
def indicateSlicingPositionSettled(self, settled):
self.scene().indicateSlicingPositionSettled(settled)
def viewportRect(self):
"""
Return a QRectF giving the part of the scene currently displayed in this
widget's viewport in the scene's coordinates
"""
r = self.mapToScene(self.viewport().geometry()).boundingRect()
return r
def mapScene2Data(self, pos):
return self.scene().scene2data.map(pos)
def mapMouseCoordinates2Data(self, pos):
return self.mapScene2Data(self.mapToScene(pos))
def _panning(self):
hBar = self.horizontalScrollBar()
vBar = self.verticalScrollBar()
vBar.setValue(vBar.value() - self._deltaPan.y())
if self.isRightToLeft():
hBar.setValue(hBar.value() + self._deltaPan.x())
else:
hBar.setValue(hBar.value() - self._deltaPan.x())
def _deaccelerate(self, speed, a=1, maxVal=64):
x = self._qBound(-maxVal, speed.x(), maxVal)
y = self._qBound(-maxVal, speed.y(), maxVal)
ax ,ay = self._setdeaccelerateAxAy(speed.x(), speed.y(), a)
if x > 0:
x = max(0.0, x - a*ax)
elif x < 0:
x = min(0.0, x + a*ax)
if y > 0:
y = max(0.0, y - a*ay)
elif y < 0:
y = min(0.0, y + a*ay)
return QPointF(x, y)
def _qBound(self, minVal, current, maxVal):
"""PyQt4 does not wrap the qBound function from Qt's global namespace
This is equivalent."""
return max(min(current, maxVal), minVal)
def _setdeaccelerateAxAy(self, x, y, a):
x = abs(x)
y = abs(y)
if x > y:
if y > 0:
ax = int(x / y)
if ax != 0:
return ax, 1
else:
return x/a, 1
if y > x:
if x > 0:
ay = int(y/x)
if ay != 0:
return 1, ay
else:
return 1, y/a
return 1, 1
def _tickerEvent(self):
if self._deltaPan.x() == 0.0 and self._deltaPan.y() == 0.0 or self._dragMode == True:
self._ticker.stop()
else:
self._deltaPan = self._deaccelerate(self._deltaPan)
self._panning()
def zoomOut(self):
self.doScale(0.9)
def zoomIn(self):
self.doScale(1.1)
def fitImage(self):
self.fitInView(self.sceneRect(), Qt.KeepAspectRatio)
width, height = self.size().width() / self.sceneRect().width(), self.height() / self.sceneRect().height()
self.setZoomFactor(min(width, height))
def centerImage(self):
self.centerOn(self.sceneRect().width()/2 + self.sceneRect().x(), self.sceneRect().height()/2 + self.sceneRect().y())
def toggleHud(self):
if self._hud is not None:
self._hud.setVisible(not self._hud.isVisible())
def setHudVisible(self, visible):
if self._hud is not None:
self._hud.setVisible(visible)
def hudVisible(self):
return self._hud.isVisible()
def focusInEvent(self, event):
self.setStyleSheet(".QFrame {border: 2px solid white; border-radius: 4px;}")
self.focusChanged.emit()
def focusOutEvent(self, event):
self.setStyleSheet(".QFrame {}")
def changeViewPort(self,qRectf):
self.fitInView(qRectf,mode = Qt.KeepAspectRatio)
width, height = self.size().width() / qRectf.width(), self.height() / qRectf.height()
self.setZoomFactor(min(width, height))
def doScale(self, factor):
self.setZoomFactor(self._zoomFactor * factor)
self.scale(factor, factor)
def doScaleTo(self, zoom=1):
factor = ( 1 / self._zoomFactor ) * zoom
self.setZoomFactor(zoom)
self.scale(factor, factor)
class BrushingModel(QObject):
brushSizeChanged = pyqtSignal(int)
brushColorChanged = pyqtSignal(QColor)
brushStrokeAvailable = pyqtSignal(QPointF, object)
drawnNumberChanged = pyqtSignal(int)
minBrushSize = 1
maxBrushSize = 61
defaultBrushSize = 3
defaultDrawnNumber = 1
defaultColor = Qt.white
erasingColor = Qt.black
erasingNumber = 100
def __init__(self, parent=None):
QObject.__init__(self, parent=parent)
self.sliceRect = None
self.bb = QRect() #bounding box enclosing the drawing
self.brushSize = self.defaultBrushSize
self.drawColor = self.defaultColor
self._temp_color = None
self._temp_number = None
self.drawnNumber = self.defaultDrawnNumber
self.pos = None
self.erasing = False
self._hasMoved = False
self.drawOnto = None
#an empty scene, where we add all drawn line segments
#a QGraphicsLineItem, and which we can use to then
#render to an image
self.scene = QGraphicsScene()
def toggleErase(self):
self.erasing = not(self.erasing)
if self.erasing:
self.setErasing()
else:
self.disableErasing()
def setErasing(self):
self.erasing = True
self._temp_color = self.drawColor
self._temp_number = self.drawnNumber
self.setBrushColor(self.erasingColor)
self.brushColorChanged.emit(self.erasingColor)
self.setDrawnNumber(self.erasingNumber)
def disableErasing(self):
self.erasing = False
self.setBrushColor(self._temp_color)
self.brushColorChanged.emit(self.drawColor)
self.setDrawnNumber(self._temp_number)
def setBrushSize(self, size):
self.brushSize = size
self.brushSizeChanged.emit(self.brushSize)
def setDrawnNumber(self, num):
self.drawnNumber = num
self.drawnNumberChanged.emit(num)
def getBrushSize(self):
return self.brushSize
def brushSmaller(self):
b = self.brushSize
if b > self.minBrushSize:
self.setBrushSize(b-1)
def brushBigger(self):
b = self.brushSize
if self.brushSize < self.maxBrushSize:
self.setBrushSize(b+1)
def setBrushColor(self, color):
self.drawColor = color
self.brushColorChanged.emit(self.drawColor)
def beginDrawing(self, pos, sliceRect):
'''
pos -- QPointF-like
'''
self.sliceRect = sliceRect
self.scene.clear()
self.bb = QRect()
self.pos = QPointF(pos.x(), pos.y())
self._hasMoved = False
def endDrawing(self, pos):
has_moved = self._hasMoved # _hasMoved will change after calling moveTo
if has_moved:
self.moveTo(pos)
else:
assert(self.pos == pos)
self.moveTo(QPointF(pos.x()+0.0001, pos.y()+0.0001)) # move a little
# Qt seems to use strange rules for determining which pixels to set when rendering a brush stroke to a QImage.
# We seem to get better results if we do the following:
# 1) Slightly offset the source window because apparently there is a small shift in the data
# 2) Render the scene to an image that is MUCH larger than the scene resolution (4x by 4x)
# 3) Downsample each 4x4 patch from the large image back to a single pixel in the final image,
# applying some threshold to determine if the final pixel is on or off.
tempi = QImage(QSize(4*self.bb.width(), 4*self.bb.height()), QImage.Format_ARGB32_Premultiplied) #TODO: format
tempi.fill(0)
painter = QPainter(tempi)
# Offset the source window. At first I thought the right offset was 0.5, because
# that would seem to make sure points are rounded to pixel CENTERS, but
# experimentation indicates that 0.25 is slightly better for some reason...
source_rect = QRectF( QPointF(self.bb.x()+0.25, self.bb.y()+0.25),
QSizeF(self.bb.width(), self.bb.height()) )
target_rect = QRectF( QPointF(0,0),
QSizeF(4*self.bb.width(), 4*self.bb.height()) )
self.scene.render(painter, target=target_rect, source=source_rect)
painter.end()
# Now downsample: convert each 4x4 patch into a single pixel by summing and dividing
ndarr = qimage2ndarray.rgb_view(tempi)[:,:,0].astype(int)
ndarr = ndarr.reshape( (ndarr.shape[0],) + (ndarr.shape[1]//4,) + (4,) )
ndarr = ndarr.sum(axis=-1)
ndarr = ndarr.transpose()
ndarr = ndarr.reshape( (ndarr.shape[0],) + (ndarr.shape[1]//4,) + (4,) )
ndarr = ndarr.sum(axis=-1)
ndarr = ndarr.transpose()
ndarr //= 4*4
downsample_threshold = (7./16)*255
labels = numpy.where(ndarr>=downsample_threshold, numpy.uint8(self.drawnNumber), numpy.uint8(0))
labels = labels.swapaxes(0,1)
assert labels.shape[0] == self.bb.width()
assert labels.shape[1] == self.bb.height()
##
## ensure that at least one pixel is label when the brush size is 1
##
## this happens when the user just clicked without moving
## in that case the lineitem will be so tiny, that it won't be rendered
## into a single pixel by the code above
if not has_moved and self.brushSize <= 1 and numpy.count_nonzero(labels) == 0:
labels[labels.shape[0]//2, labels.shape[1]//2] = self.drawnNumber
self.brushStrokeAvailable.emit(QPointF(self.bb.x(), self.bb.y()), labels)
def dumpDraw(self, pos):
res = self.endDrawing(pos)
self.beginDrawing(pos, self.sliceRect)
return res
def moveTo(self, pos):
#data coordinates
oldX, oldY = self.pos.x(), self.pos.y()
x,y = pos.x(), pos.y()
line = QGraphicsLineItem(oldX, oldY, x, y)
line.setPen(QPen( QBrush(Qt.white), self.brushSize, Qt.SolidLine, Qt.RoundCap, Qt.RoundJoin))
self.scene.addItem(line)
self._hasMoved = True
#update bounding Box
if not self.bb.isValid():
self.bb = QRect(QPoint(oldX,oldY), QSize(1,1))
#grow bounding box
self.bb.setLeft( min(self.bb.left(), max(0, x-self.brushSize//2-1) ) )
self.bb.setRight( max(self.bb.right(), min(self.sliceRect[0]-1, x+self.brushSize//2+1) ) )
self.bb.setTop( min(self.bb.top(), max(0, y-self.brushSize//2-1) ) )
self.bb.setBottom(max(self.bb.bottom(), min(self.sliceRect[1]-1, y+self.brushSize//2+1) ) )
#update/move position
self.pos = pos
class Node(QGraphicsItem):
Type = QGraphicsItem.UserType + 1
def __init__(self, graphWidget, text=""):
super(Node, self).__init__()
self.graph = graphWidget
self.edgeList = []
self.newPos = QPointF()
self.setFlag(QGraphicsItem.ItemIsMovable)
self.setFlag(QGraphicsItem.ItemSendsGeometryChanges)
self.setCacheMode(QGraphicsItem.DeviceCoordinateCache)
self.setZValue(1)
self.text = text
self.active = False
self.b = 15
def type(self):
return Node.Type
def addEdge(self, edge):
self.edgeList.append(edge)
edge.adjust()
def setActive(self, value=True):
self.active = value
def edges(self):
return self.edgeList
def calculateForces(self):
if not self.scene() or self.scene().mouseGrabberItem() is self:
self.newPos = self.pos()
return
# Sum up all forces pushing this item away.
xvel = 0.0
yvel = 0.0
for item in self.scene().items():
if not isinstance(item, Node):
continue
line = QLineF(self.mapFromItem(item, 0, 0), QPointF(0, 0))
dx = line.dx()
dy = line.dy()
l = 2.0 * (dx * dx + dy * dy)
if l > 0:
xvel += (dx * 150.0) / l
yvel += (dy * 150.0) / l
# Now subtract all forces pulling items together.
#weight = (len(self.edgeList) + 1) * 100.0
for edge in self.edgeList:
if edge.sourceNode() is self:
pos = self.mapFromItem(edge.destNode(), 0, 0)
else:
weight = edge.weight * 6
pos = self.mapFromItem(edge.sourceNode(), 0, 0)
xvel += pos.x() / weight
yvel += pos.y() / weight
if qAbs(xvel) < 0.1 and qAbs(yvel) < 0.1:
xvel = yvel = 0.0
sceneRect = self.scene().sceneRect()
self.newPos = self.pos() + QPointF(xvel, yvel)
self.newPos.setX(
min(max(self.newPos.x(),
sceneRect.left() + 10),
sceneRect.right() - 10))
self.newPos.setY(
min(max(self.newPos.y(),
sceneRect.top() + 10),
sceneRect.bottom() - 10))
def advance(self):
if self.newPos == self.pos():
return False
self.setPos(self.newPos)
return True
def boundingRect(self):
adjust = 2.0
return QRectF(-self.b - adjust, -self.b - adjust,
2 * self.b + 3 + adjust, 2 * self.b + 3 + adjust)
def shape(self):
path = QPainterPath()
path.addEllipse(-self.b, -self.b, 2 * self.b, 2 * self.b)
return path
def paint(self, painter, option, widget):
self.setZValue(5)
palette = QPalette()
painter.setPen(Qt.NoPen)
painter.setBrush(Qt.darkGray)
gradient = QRadialGradient(-3, -3, 15)
if option.state & QStyle.State_Sunken or self.active:
gradient.setCenter(3, 3)
gradient.setFocalPoint(3, 3)
gradient.setColorAt(
1, palette.color(QPalette.Active, QPalette.Button))
gradient.setColorAt(
0, palette.color(QPalette.Active, QPalette.Button))
pen = QPen(palette.color(QPalette.Active, QPalette.ButtonText), 2)
else:
gradient.setColorAt(
1, palette.color(QPalette.Disabled, QPalette.Button))
gradient.setColorAt(
0, palette.color(QPalette.Disabled, QPalette.Button))
pen = QPen(palette.color(QPalette.Disabled, QPalette.ButtonText),
0)
painter.setBrush(QBrush(gradient))
painter.setPen(pen)
painter.drawEllipse(-self.b, -self.b, 2 * self.b, 2 * self.b)
painter.drawText(self.boundingRect(), Qt.AlignCenter, self.text)
def itemChange(self, change, value):
if change == QGraphicsItem.ItemPositionHasChanged:
for edge in self.edgeList:
edge.adjust()
self.graph.itemMoved()
return super(Node, self).itemChange(change, value)
def mousePressEvent(self, event):
self.update()
super(Node, self).mousePressEvent(event)
def mouseReleaseEvent(self, event):
self.update()
super(Node, self).mouseReleaseEvent(event)
class Edge(QGraphicsItem):
Pi = math.pi
TwoPi = 2.0 * Pi
Type = QGraphicsItem.UserType + 2
def __init__(self, sourceNode, destNode, state=1, text=""):
super(Edge, self).__init__()
self.arrowSize = 15.0
self.sourcePoint = QPointF()
self.destPoint = QPointF()
self.setAcceptedMouseButtons(Qt.NoButton)
self.source = sourceNode
self.dest = destNode
self.source.addEdge(self)
self.dest.addEdge(self)
self.adjust()
self.state = state
self.text = text
line = QLineF(sourceNode.pos(), destNode.pos())
self.weight = line.length()
def __len__(self):
line = QLineF(self.sourceNode().pos(), self.destNode().pos())
return line.length()
def type(self):
return Edge.Type
def sourceNode(self):
return self.source
def setSourceNode(self, node):
self.source = node
self.adjust()
def destNode(self):
return self.dest
def setDestNode(self, node):
self.dest = node
self.adjust()
def adjust(self):
if not self.source or not self.dest:
return
line = QLineF(self.mapFromItem(self.source, 0, 0),
self.mapFromItem(self.dest, 0, 0))
length = line.length()
self.prepareGeometryChange()
if length > 20.0:
edgeOffset = QPointF((line.dx() * 10) / length,
(line.dy() * 10) / length)
self.sourcePoint = line.p1() + edgeOffset
self.destPoint = line.p2() - edgeOffset
else:
self.sourcePoint = line.p1()
self.destPoint = line.p1()
def setVisible(self, value=True):
if value:
self.state = 1
else:
self.state = 0
def setActive(self, value=True):
if value:
self.state = 3
else:
self.state = 1
def setTempActive(self, value=True):
if value:
self.state = 2
else:
self.state = 1
def boundingRect(self):
if not self.source or not self.dest:
return QRectF()
penWidth = 1.0
extra = (penWidth + self.arrowSize) / 2.0 + 100
return QRectF(
self.sourcePoint,
QSizeF(self.destPoint.x() - self.sourcePoint.x(),
self.destPoint.y() -
self.sourcePoint.y())).normalized().adjusted(
-extra, -extra, extra, extra)
def paint(self, painter, option, widget):
if not self.source or not self.dest:
return
# Draw the line itself.
line = QLineF(self.sourcePoint, self.destPoint)
if line.length() == 0.0:
return
palette = QPalette()
self.setZValue(self.state)
if self.state == 3:
pen = QPen(Qt.red, 2, Qt.SolidLine, Qt.RoundCap, Qt.RoundJoin)
if self.state == 2:
pen = QPen(Qt.red, 2, Qt.DashLine, Qt.RoundCap, Qt.RoundJoin)
elif self.state == 1:
pen = QPen(palette.color(QPalette.Disabled, QPalette.WindowText),
0, Qt.SolidLine, Qt.RoundCap, Qt.RoundJoin)
elif self.state == 0:
pen = QPen()
pen.setBrush(QBrush(Qt.NoBrush))
painter.setPen(pen)
painter.drawLine(line)
angle = math.acos(line.dx() / line.length())
if line.dy() >= 0:
angle = Edge.TwoPi - angle
# draw arrowheads
if self.state == 2 or self.state == 3:
# Draw the arrows if there's enough room.
sourceArrowP1 = self.sourcePoint + QPointF(
math.sin(angle + Edge.Pi / 3) * self.arrowSize,
math.cos(angle + Edge.Pi / 3) * self.arrowSize)
sourceArrowP2 = self.sourcePoint + QPointF(
math.sin(angle + Edge.Pi - Edge.Pi / 3) * self.arrowSize,
math.cos(angle + Edge.Pi - Edge.Pi / 3) * self.arrowSize)
destArrowP1 = self.destPoint + QPointF(
math.sin(angle - Edge.Pi / 3) * self.arrowSize,
math.cos(angle - Edge.Pi / 3) * self.arrowSize)
destArrowP2 = self.destPoint + QPointF(
math.sin(angle - Edge.Pi + Edge.Pi / 3) * self.arrowSize,
math.cos(angle - Edge.Pi + Edge.Pi / 3) * self.arrowSize)
painter.setPen(
QPen(Qt.red, 2, Qt.SolidLine, Qt.RoundCap, Qt.RoundJoin))
painter.setBrush(QBrush(Qt.red, Qt.SolidPattern))
painter.drawPolygon(
QPolygonF([line.p1(), sourceArrowP1, sourceArrowP2]))
#painter.drawPolygon(QPolygonF([line.p2(), destArrowP1, destArrowP2]))
if self.state > 0 and self.source > self.dest:
point = QPointF((self.sourcePoint.x() + self.destPoint.x()) / 2,
(self.sourcePoint.y() + self.destPoint.y()) / 2)
point = QPointF(point.x() + math.sin(angle) * 16,
point.y() + math.cos(angle) * 16)
painter.drawText(point, self.text)
class DrawManager(QObject):
"""
DEPRECATED.
Will be replaced with BrushingModel, BrushingControler, BrushStroke.
"""
brushSizeChanged = pyqtSignal(int)
brushColorChanged = pyqtSignal(QColor)
minBrushSize = 1
maxBrushSize = 61
defaultBrushSize = 3
defaultDrawnNumber = 1
defaultColor = Qt.white
erasingColor = Qt.black
def __init__(self):
QObject.__init__(self)
self.shape = None
self.bb = QRect() #bounding box enclosing the drawing
self.brushSize = self.defaultBrushSize
self.drawColor = self.defaultColor
self.drawnNumber = self.defaultDrawnNumber
self.penVis = QPen(self.drawColor, self.brushSize, Qt.SolidLine, Qt.RoundCap, Qt.RoundJoin)
self.penDraw = QPen(self.drawColor, self.brushSize, Qt.SolidLine, Qt.RoundCap, Qt.RoundJoin)
self.pos = None
self.erasing = False
#on which layer do we want to draw when self.drawingEnabled?
self.drawOnto = None
#an empty scene, where we add all drawn line segments
#a QGraphicsLineItem, and which we can use to then
#render to an image
self.scene = QGraphicsScene()
def growBoundingBox(self):
self.bb.setLeft( max(0, self.bb.left()-self.brushSize-1))
self.bb.setTop( max(0, self.bb.top()-self.brushSize-1 ))
self.bb.setRight( min(self.shape[0], self.bb.right()+self.brushSize+1))
self.bb.setBottom(min(self.shape[1], self.bb.bottom()+self.brushSize+1))
def toggleErase(self):
self.erasing = not(self.erasing)
def setErasing(self):
self.erasing = True
self.brushColorChanged.emit(self.erasingColor)
def disableErasing(self):
self.erasing = False
self.brushColorChanged.emit(self.drawColor)
def setBrushSize(self, size):
self.brushSize = size
self.penVis.setWidth(size)
self.penDraw.setWidth(size)
self.brushSizeChanged.emit(self.brushSize)
def setDrawnNumber(self, num):
self.drawnNumber = num
self.drawnNumberChanged.emit(num)
def getBrushSize(self):
return self.brushSize
def brushSmaller(self):
b = self.brushSize
if b > self.minBrushSize:
self.setBrushSize(b-1)
def brushBigger(self):
b = self.brushSize
if self.brushSize < self.maxBrushSize:
self.setBrushSize(b+1)
def setBrushColor(self, color):
self.drawColor = color
self.penVis.setColor(color)
self.emit.brushColorChanged(self.drawColor)
def beginDrawing(self, pos, shape):
self.shape = shape
self.bb = QRectF(0, 0, self.shape[0], self.shape[1])
self.scene.clear()
if self.erasing:
self.penVis.setColor(self.erasingColor)
else:
self.penVis.setColor(self.drawColor)
self.pos = QPointF(pos.x()+0.0001, pos.y()+0.0001)
line = self.moveTo(pos)
return line
def endDrawing(self, pos):
self.moveTo(pos)
self.growBoundingBox()
tempi = QImage(QSize(self.bb.width(), self.bb.height()), QImage.Format_ARGB32_Premultiplied) #TODO: format
tempi.fill(0)
painter = QPainter(tempi)
self.scene.render(painter, QRectF(QPointF(0,0), self.bb.size()), self.bb)
return (self.bb.left(), self.bb.top(), tempi) #TODO: hackish, probably return a class ??
def dumpDraw(self, pos):
res = self.endDrawing(pos)
self.beginDrawing(pos, self.shape)
return res
def moveTo(self, pos):
lineVis = QGraphicsLineItem(self.pos.x(), self.pos.y(), pos.x(), pos.y())
lineVis.setPen(self.penVis)
line = QGraphicsLineItem(self.pos.x(), self.pos.y(), pos.x(), pos.y())
line.setPen(self.penDraw)
self.scene.addItem(line)
self.pos = pos
x = pos.x()
y = pos.y()
#update bounding Box :
if x > self.bb.right():
self.bb.setRight(x)
if x < self.bb.left():
self.bb.setLeft(x)
if y > self.bb.bottom():
self.bb.setBottom(y)
if y < self.bb.top():
self.bb.setTop(y)
return lineVis
def paint(self, painter, rect, widget_size, draw_highlight):
GraphXYView.paint(self, painter, rect, widget_size, draw_highlight)
smooth = 2.5 # this is invert smoothing, increase it to sharpen graph
if not self.model():
return
option = self.viewOptions()
background = option.palette.base()
foreground = QPen(option.palette.color(QPalette.Foreground))
# Handle step by step size increment
step_width = floor(widget_size.width() / RESIZE_INCREMENT) * RESIZE_INCREMENT
step_height = floor(widget_size.height() / RESIZE_INCREMENT) * RESIZE_INCREMENT
if self.model().rowCount(self.rootIndex()) != 0:
value_max = self.getValueMaxAll()
else:
value_max = 0
# If there is no data yet, or the max is at 0, use a max of 10 to dispaly an axe
if self.fetcher.fragment.type == 'LoadStream':
if value_max < 100:
value_max = 100
else:
if value_max == 0:
value_max = 10
if len(self.data) != 0:
xmin = self.getValueMin(0)
xmax = self.getValueMax(0)
else:
return
if xmin == xmax:
return # avoid division by 0
painter.save()
# Offset to cerrectly center the graph after the resizing due to the step by step increment
painter.translate((widget_size.width() - step_width) / 2.0, (widget_size.height() - step_height) / 2.0)
painter.setPen(foreground)
# Draw lines
fm = QFontMetrics(painter.font())
margin_size = fm.width("0")
if self.fetcher.fragment.type == 'TrafficStream':
x_axe_off = fm.width(unicode(value_max * 2000))
else:
x_axe_off = fm.width(unicode(value_max * 200))
# Order them by max mean value
means = {}
for col in xrange(1, len(self.data[0])):
means[col] = self.getMeanValue(col)
def mean_sorter(x, y):
return cmp(y[1], x[1])
means_sorted = means.items()
means_sorted.sort(mean_sorter)
def slope_by_index(points, index, sens):
if index >= len(points):
return 0
if index == 0:
return points[index].y() + (points[index+1].y()-points[index].y())/smooth
if index == (len(points) - 1):
return points[index].y() - (points[index].y()-points[index-1].y())/smooth
vpoints = [ points[index-1].y(), points[index].y(), points[index+1].y()]
if points[index].y() == max(vpoints):
return points[index].y()
if points[index].y() == min(vpoints):
return points[index].y()
if sens == 0:
return points[index].y() + (points[index+1].y()-points[index].y())/smooth
#return points[index].y() + (points[index+1].y() - points[index-1].y()) / (points[index+1].x()-points[index-1].x()) * (points[index+1].x() - points[index].x()) / smooth
else:
return points[index].y() - (points[index].y()-points[index-1].y())/smooth
#return points[index].y() + (points[index+1].y() - points[index-1].y()) / (points[index+1].x()-points[index-1].x()) * (points[index-1].x() - points[index].x()) / smooth
colors = odict()
for _col in means_sorted:
col = _col[0]
path = QPainterPath()
path.setFillRule(Qt.WindingFill)
last_point = None
height_max = 0.0
width_max = step_width - 2 * margin_size - x_axe_off
height_max = (step_height * (1.0 - TITLE_AREA)) - 2 * margin_size
points = []
for row in xrange(len(self.data)):
index = self.model().index(row, col, self.rootIndex())
value = index.data().toInt()[0]
x_value = int(self.data[row][0])
#print "x=", x_value, "y=", value
if value >= 0.0:
height = height_max * value/value_max
x = (float(x_value - xmin) / float(xmax - xmin)) * width_max
point = QPointF(x + margin_size + x_axe_off, height_max - height + margin_size)
points.append(point)
for index, point in enumerate(points):
# draw simple point
painter.setBrush(QBrush(QColor(self.colours[col]).dark(200)))
painter.drawEllipse(QRectF(point.x() - 2, point.y() - 2, 4, 4))
# init drawing
if index == 0:
path.moveTo(point)
continue
px = points[index-1].x() + (points[index].x() - points[index-1].x()) / smooth
py = slope_by_index(points, index-1, 0)
c1 = QPointF(px, py)
px = points[index].x() - ( points[index].x() - points[index-1].x() ) / smooth
py = slope_by_index(points, index, 1)
c2 = QPointF(px, py)
path.cubicTo(c1, c2, point)
last_point = points[len(points)-1]
if last_point:
txt = self.model().headerData(col, Qt.Horizontal).toString()
txt_width = fm.width(txt)
txt_height = fm.height()
colors[txt] = QColor(self.colours[col])
path.lineTo(QPointF(x + margin_size + x_axe_off, height_max + margin_size))
path.lineTo(QPointF(margin_size + x_axe_off, height_max + margin_size))
color = QColor(self.colours[col])
color.setAlpha(200)
## Create the gradient effect
grad = QLinearGradient(QPointF(0.0, 0.0), QPointF(0.0, height_max))
grad.setColorAt(1.0, color.dark(150))
grad.setColorAt(0.95, color)
grad.setColorAt(0.05, color)
grad.setColorAt(0.0, Qt.white)
painter.setBrush(QBrush(grad))
painter.drawPath(path)
# Graduations
nbr_grad = xmax - xmin
dgrad = 1
while nbr_grad > 10:
nbr_grad = floor(nbr_grad / 10)
dgrad = dgrad * 10
if nbr_grad <= 2:
dgrad = dgrad / 10
nbr_grad = 10
# Prevent for infinite loops.
if dgrad < 1:
dgrad = 1
dx = (float(dgrad) / float(xmax-xmin)) * width_max
text_dy = fm.height()
i = 0
while (i * dgrad) <= xmax - xmin:
if self.fetcher.fragment.type != 'TrafficStream' or (self.fetcher.fragment.type == 'TrafficStream' and i % 4 == 0):
grad_width = fm.width("0")
painter.drawLine(margin_size + x_axe_off + (i*dx), height_max + margin_size, margin_size + x_axe_off + (i*dx), height_max + margin_size + grad_width)
text = unicode(int(dgrad * i))
# Legend drawing:
painter.translate(margin_size + x_axe_off + (i*dx), height_max + margin_size + 2*grad_width)
painter.rotate(-45.0)
int_time = (i * dgrad) + xmin
text = QString('%ds' % (xmax - int_time))
txt_width = fm.width(text)
painter.drawText(QRect(-txt_width, -dx, txt_width, 2*dx), Qt.AlignRight|Qt.AlignVCenter, text)
painter.rotate(45.0)
painter.translate(-(margin_size + x_axe_off + (i*dx)), -(height_max + margin_size + 2*grad_width))
i = i + 1
interval = 0
height = height_max + margin_size + txt_width * sin(45) + 30
for k, v in colors.iteritems():
painter.setPen(v)
legendRect = QRect(interval, height, 10, 10)
painter.drawRect(legendRect)
painter.fillRect(legendRect, QBrush(v))
painter.setPen(foreground)
txt_width = fm.width(k)
txt_height = fm.height()
painter.drawText(QRect(interval + 10, height, txt_width, txt_height), Qt.AlignRight|Qt.AlignVCenter, k)
interval += 20 + txt_width
painter.translate((step_width - widget_size.width()) / 2.0, (step_height - widget_size.height()) / 2.0)
painter.restore()
class TreeNode(object):
"""store data for a class and manage hierarchy"""
def __init__(self, classid,name,rect=None,color=None,pos=None,accu = 1.0,parent=None):
super(TreeNode, self).__init__()
self.classid = classid
self.name = name
self.parent = parent
self.accu = accu
self.rect = QRectF(*rect) if rect else rect
self.color = QColor(color) if color else color
self.pos = QPointF(*pos) if pos else pos
self.children = []
if parent:
parent.children.append(self)
# def __init__(self,jsonobj):
# self.__init__(jsonobj['id'],jsonobj['name'],jsonobj['rect'],jsonobj['color'],jsonobj['pos'])
# for child in jsonobj['children']:
# childItem = TreeNode(child)
# self.children.append(childItem)
# childItem.parent = self
def isLeaf(self):
if self.children:
return False
else:
return True
def isRoot(self):
if self.parent:
return False
else:
return True
def toJSON(self):
jsonObj = {}
jsonObj['id']= self.classid
jsonObj['name'] = self.name
jsonObj['rect'] = [self.rect.left(),self.rect.top(),self.rect.width(),self.rect.height()] if self.rect else self.rect
jsonObj['color'] = str(self.color.name()) if self.color else self.color
jsonObj['pos'] = [self.pos.x(),self.pos.y()] if isinstance(self.pos,QPointF) else self.pos
jsonObj['accu'] = self.accu
jsonObj['children'] = []
for child in self.children:
jsonObj['children'].append(child.toJSON())
return jsonObj
def __str__(self):
tempstr = "%s %s\n" % (self.classid,self.name)
for child in self.children:
tempstr+= ' '+str(child)
return tempstr
def findNode(self,id):
if self.classid == id:
return self
for child in self.children:
result = child.findNode(id)
if result:
return result
return None
def toplogicalDistance(self,id1,id2):
if id1==id2:
return 0
else:
node1 = self.findNode(id1)
node2 = self.findNode(id2)
if node1 and node2:
if node1.parent == node2.parent:
return 1
else:
return 2
return 0
def matrixDistance(self,id1,id2):
if id1==id2:
return 0
else:
node1 = self.findNode(id1)
node2 = self.findNode(id2)
if node1 and node2:
pos1 = node1.pos + node1.parent.pos
pos2 = node2.pos + node2.parent.pos
return QLineF(pos1,pos2).length()
return 2000.0
def transactionPossibility(self,id1,id2):
node1 = self.findNode(id1)
node2 = self.findNode(id2)
if node1 and node2:
return node1.accu * node2.accu
else:
return 1.0
def paint(self, painter, _1, _2):
""" Main-Method of the Pointer-Class <br>
calculates/renders/draws the Lines of the Arrow
"""
if self.fromView.collidesWithItem(self.toView):
return
# antialiasing makes things look nicer :)
painter.setRenderHint(QPainter.Antialiasing)
self.toView.x()
pM1 = QPointF(self.fromView.x() + self.fromView.size().width() / 2,
self.fromView.y() + self.fromView.size().height() / 2)
pM2 = QPointF(self.toView.x() + self.toView.size().width() / 2,
self.toView.y() + self.toView.size().height() / 2)
deltaX = pM2.x() - pM1.x()
deltaY = pM2.y() - pM1.y()
if deltaX == 0:
deltaX = 0.01
if deltaY == 0:
deltaY = 0.01
if deltaX >= 0:
if deltaY >= 0:
# rechts unten
if deltaX / deltaY >= self.fromView.size().width() / self.fromView.size().height():
# Start von rechter Seite
pStart = QPointF(pM1.x() + self.fromView.size().width() / 2,
pM1.y() + (self.fromView.size().width() / 2) * (deltaY / deltaX))
else:
# Start von unterer Seite
pStart = QPointF(pM1.x() + (self.fromView.size().height() / 2) * (deltaX / deltaY),
pM1.y() + self.fromView.size().height() / 2)
if deltaX / deltaY >= self.toView.size().width() / self.toView.size().height():
# Ende bei linker Seite
pEnd = QPointF(pM2.x() - self.toView.size().width() / 2,
pM2.y() - (self.toView.size().width() / 2) * (deltaY / deltaX))
else:
# Ende bei oberer Seite
pEnd = QPointF(pM2.x() - (self.toView.size().height() / 2) * (deltaX / deltaY),
pM2.y() - self.toView.size().height() / 2)
else:
# rechts oben
if deltaX / deltaY * -1 >= self.fromView.size().width() / self.fromView.size().height():
# Start von rechter Seite
pStart = QPointF(pM1.x() + self.fromView.size().width() / 2,
pM1.y() + (self.fromView.size().width() / 2) * (deltaY / deltaX))
else:
# Start von oberer Seite
pStart = QPointF(pM1.x() - (self.fromView.size().height() / 2) * (deltaX / deltaY),
pM1.y() - self.fromView.size().height() / 2)
if deltaX / deltaY * -1 >= self.toView.size().width() / self.toView.size().height():
# Ende bei linker Seite
pEnd = QPointF(pM2.x() - self.toView.size().width() / 2,
pM2.y() - (self.toView.size().width() / 2) * (deltaY / deltaX))
else:
# Ende bei unterer Seite
pEnd = QPointF(pM2.x() + (self.toView.size().height() / 2) * (deltaX / deltaY),
pM2.y() + self.toView.size().height() / 2)
else:
if deltaY >= 0:
# links unten
if deltaX / deltaY * -1 >= self.fromView.size().width() / self.fromView.size().height():
# Start von linker Seite
pStart = QPointF(pM1.x() - self.fromView.size().width() / 2,
pM1.y() - (self.fromView.size().width() / 2) * (deltaY / deltaX))
else:
# Start von unterer Seite
pStart = QPointF(pM1.x() + (self.fromView.size().height() / 2) * (deltaX / deltaY),
pM1.y() + self.fromView.size().height() / 2)
if deltaX / deltaY * -1 >= self.toView.size().width() / self.toView.size().height():
# Ende bei rechten Seite
pEnd = QPointF(pM2.x() + self.toView.size().width() / 2,
pM2.y() + (self.toView.size().width() / 2) * (deltaY / deltaX))
else:
# Ende bei oberer Seite
pEnd = QPointF(pM2.x() - (self.toView.size().height() / 2) * (deltaX / deltaY),
pM2.y() - self.toView.size().height() / 2)
else:
# links oben
if deltaX / deltaY >= self.fromView.size().width() / self.fromView.size().height():
# Start von linker Seite
pStart = QPointF(pM1.x() - self.fromView.size().width() / 2,
pM1.y() - (self.fromView.size().width() / 2) * (deltaY / deltaX))
else:
# Start von oberer Seite
pStart = QPointF(pM1.x() - (self.fromView.size().height() / 2) * (deltaX / deltaY),
pM1.y() - self.fromView.size().height() / 2)
if deltaX / deltaY >= self.toView.size().width() / self.toView.size().height():
# Ende bei rechter Seite
pEnd = QPointF(pM2.x() + self.toView.size().width() / 2,
pM2.y() + (self.toView.size().width() / 2) * (deltaY / deltaX))
else:
# Ende bei unterer Seite
pEnd = QPointF(pM2.x() + (self.toView.size().height() / 2) * (deltaX / deltaY),
pM2.y() + self.toView.size().height() / 2)
self.setLine(QLineF(pEnd, pStart))
if self.line().length() != 0:
angle = math.acos(self.line().dx() / self.line().length())
if self.line().dy() >= 0:
angle = math.pi * 2 - angle
arrowP1 = self.line().p1() + QPointF(math.sin(angle + math.pi / 2.5) * self.arrowSize, math.cos(angle + math.pi / 2.5) * self.arrowSize)
arrowP2 = self.line().p1() + QPointF(math.sin(angle + math.pi - math.pi / 2.5) * self.arrowSize, math.cos(angle + math.pi - math.pi / 2.5) * self.arrowSize)
self.arrowhead.clear()
self.arrowhead.append(self.line().p1())
self.arrowhead.append(arrowP1)
self.arrowhead.append(arrowP2)
painter.setBrush(QBrush(self.bgcolor))
painter.drawLine(self.line())
painter.drawPolygon(self.arrowhead)
class BrushingModel(QObject):
brushSizeChanged = pyqtSignal(int)
brushColorChanged = pyqtSignal(QColor)
brushStrokeAvailable = pyqtSignal(QPointF, object)
drawnNumberChanged = pyqtSignal(int)
minBrushSize = 1
maxBrushSize = 61
defaultBrushSize = 3
defaultDrawnNumber = 1
defaultColor = Qt.white
erasingColor = Qt.black
erasingNumber = 100
def __init__(self):
QObject.__init__(self)
self.sliceRect = None
self.bb = QRect() #bounding box enclosing the drawing
self.brushSize = self.defaultBrushSize
self.drawColor = self.defaultColor
self._temp_color = None
self._temp_number = None
self.drawnNumber = self.defaultDrawnNumber
self.pos = None
self.erasing = False
self.drawOnto = None
#an empty scene, where we add all drawn line segments
#a QGraphicsLineItem, and which we can use to then
#render to an image
self.scene = QGraphicsScene()
def toggleErase(self):
self.erasing = not(self.erasing)
if self.erasing:
self.setErasing()
else:
self.disableErasing()
def setErasing(self):
self.erasing = True
self._temp_color = self.drawColor
self._temp_number = self.drawnNumber
self.setBrushColor(self.erasingColor)
self.brushColorChanged.emit(self.erasingColor)
self.setDrawnNumber(self.erasingNumber)
def disableErasing(self):
self.erasing = False
self.setBrushColor(self._temp_color)
self.brushColorChanged.emit(self.drawColor)
self.setDrawnNumber(self._temp_number)
def setBrushSize(self, size):
self.brushSize = size
self.brushSizeChanged.emit(self.brushSize)
def setDrawnNumber(self, num):
print "Setting Drawnnumer", num
self.drawnNumber = num
self.drawnNumberChanged.emit(num)
def getBrushSize(self):
return self.brushSize
def brushSmaller(self):
b = self.brushSize
if b > self.minBrushSize:
self.setBrushSize(b-1)
def brushBigger(self):
b = self.brushSize
if self.brushSize < self.maxBrushSize:
self.setBrushSize(b+1)
def setBrushColor(self, color):
self.drawColor = color
self.brushColorChanged.emit(self.drawColor)
def beginDrawing(self, pos, sliceRect):
self.sliceRect = sliceRect
self.scene.clear()
self.bb = QRect()
self.pos = QPointF(pos.x()+0.0001, pos.y()+0.0001)
line = self.moveTo(pos)
return line
def endDrawing(self, pos):
self.moveTo(pos)
tempi = QImage(QSize(self.bb.width(), self.bb.height()), QImage.Format_ARGB32_Premultiplied) #TODO: format
tempi.fill(0)
painter = QPainter(tempi)
self.scene.render(painter, target=QRectF(), source=QRectF(QPointF(self.bb.x(), self.bb.y()), QSizeF(self.bb.width(), self.bb.height())))
painter.end()
ndarr = qimage2ndarray.rgb_view(tempi)[:,:,0]
labels = numpy.where(ndarr>0,numpy.uint8(self.drawnNumber),numpy.uint8(0))
labels = labels.swapaxes(0,1)
assert labels.shape[0] == self.bb.width()
assert labels.shape[1] == self.bb.height()
self.brushStrokeAvailable.emit(QPointF(self.bb.x(), self.bb.y()), labels)
def dumpDraw(self, pos):
res = self.endDrawing(pos)
self.beginDrawing(pos, self.sliceRect)
return res
def moveTo(self, pos):
oldX, oldY = self.pos.x(), self.pos.y()
x,y = pos.x(), pos.y()
#print "BrushingModel.moveTo(pos=%r)" % (pos)
line = QGraphicsLineItem(oldX, oldY, x, y)
line.setPen(QPen( QBrush(Qt.white), self.brushSize, Qt.SolidLine, Qt.RoundCap, Qt.RoundJoin))
self.scene.addItem(line)
#update bounding Box
if not self.bb.isValid():
self.bb = QRect(QPoint(x,y), QSize(1,1))
#grow bounding box
self.bb.setLeft( min(self.bb.left(), max(0, x-self.brushSize/2-1) ) )
self.bb.setRight( max(self.bb.right(), min(self.sliceRect[0]-1, x+self.brushSize/2+1) ) )
self.bb.setTop( min(self.bb.top(), max(0, y-self.brushSize/2-1) ) )
self.bb.setBottom(max(self.bb.bottom(), min(self.sliceRect[1]-1, y+self.brushSize/2+1) ) )
#update/move position
self.pos = pos
class EEdge(QGraphicsObject):
def __init__(self, head, tail, uuid):
QGraphicsObject.__init__(self)
if not issubclass(head.__class__, dict) and not isinstance(
tail.__class__, dict):
raise AttributeError
self.setZValue(0.0)
self.__kId = uuid
self.__head = head
self.__tail = tail
if head[ENode.kGuiAttributeType].match(EAttribute.kTypeInput):
self.__head = tail
self.__tail = head
self.__head[ENode.kGuiAttributeParent].onMove.connect(self.update)
self.__tail[ENode.kGuiAttributeParent].onMove.connect(self.update)
self.__headPoint = QPointF(0.0, 0.0)
self.__tailPoint = QPointF(0.0, 0.0)
self.__pen = QPen(QColor(43, 43, 43), 2, Qt.SolidLine)
self.update()
@property
def Id(self):
return self.__kId
@property
def Head(self):
return self.__head
@property
def Tail(self):
return self.__tail
def pen(self):
return self.__pen
def setPen(self, pen):
if not isinstance(pen, QPen):
raise AttributeError
self.__pen = pen
def update(self):
QGraphicsObject.prepareGeometryChange(self)
self.__headPoint = self.mapFromItem(
self.__head[ENode.kGuiAttributeParent],
self.__head[ENode.kGuiAttributePlug])
self.__tailPoint = self.mapFromItem(
self.__tail[ENode.kGuiAttributeParent],
self.__tail[ENode.kGuiAttributePlug])
self.__headOffsetLine = QLineF(
self.__headPoint,
QPointF(self.__headPoint.x() + 15, self.__headPoint.y()))
self.__tailOffsetLine = QLineF(
self.__tailPoint,
QPointF(self.__tailPoint.x() - 15, self.__tailPoint.y()))
line = QLineF(self.__headPoint, self.__tailPoint)
self.__line = line
def boundingRect(self):
extra = (self.pen().width() * 64) / 2
return QRectF(
self.__line.p1(),
QSizeF(self.__line.p2().x() - self.__line.p1().x(),
self.__line.p2().y() -
self.__line.p1().y())).normalized().adjusted(
-extra, -extra, extra, extra)
def shape(self):
return QGraphicsObject.shape(self)
def drawPath(self, startPoint, endPoint):
path = QPainterPath()
one = (QPointF(endPoint.x(), startPoint.y()) + startPoint) / 2
two = (QPointF(startPoint.x(), endPoint.y()) + endPoint) / 2
path.moveTo(startPoint)
angle = math.pi / 2
bLine1 = QLineF()
bLine1.setP1(startPoint)
if startPoint.x() > endPoint.x():
dist = startPoint.x() - endPoint.x()
one = (bLine1.p1() +
QPointF(math.sin(angle) * dist,
math.cos(angle) * dist))
bLine1.setP1(endPoint)
two = (bLine1.p1() +
QPointF(math.sin(angle) * dist,
math.cos(angle) * dist))
path.cubicTo(one, two, endPoint)
return path, QLineF(one, two)
def paint(self, painter, option, widget=None):
painter.setPen(self.pen())
headCenter = self.mapFromItem(
self.__head[ENode.kGuiAttributeParent],
self.__head[ENode.kGuiAttributeParent].boundingRect().center())
tailCenter = self.mapFromItem(
self.__tail[ENode.kGuiAttributeParent],
self.__tail[ENode.kGuiAttributeParent].boundingRect().center())
centerPoint = QLineF(headCenter, tailCenter).pointAt(0.5)
centerPoint.setX(self.__headOffsetLine.p2().x())
lineFromHead = QLineF(self.__headOffsetLine.p2(), centerPoint)
centerPoint.setX(self.__tailOffsetLine.p2().x())
lineFromTail = QLineF(self.__tailOffsetLine.p2(), centerPoint)
painter.drawPath(
self.drawPath(self.__headOffsetLine.p1(),
self.__tailOffsetLine.p1())[0])
class BrushingModel(QObject):
brushSizeChanged = pyqtSignal(int)
brushColorChanged = pyqtSignal(QColor)
brushStrokeAvailable = pyqtSignal(QPointF, object)
drawnNumberChanged = pyqtSignal(int)
minBrushSize = 1
maxBrushSize = 61
defaultBrushSize = 3
defaultDrawnNumber = 1
defaultColor = Qt.white
erasingColor = Qt.black
erasingNumber = 100
def __init__(self, parent=None):
QObject.__init__(self, parent=parent)
self.sliceRect = None
self.bb = QRect() #bounding box enclosing the drawing
self.brushSize = self.defaultBrushSize
self.drawColor = self.defaultColor
self._temp_color = None
self._temp_number = None
self.drawnNumber = self.defaultDrawnNumber
self.pos = None
self.erasing = False
self._hasMoved = False
self.drawOnto = None
#an empty scene, where we add all drawn line segments
#a QGraphicsLineItem, and which we can use to then
#render to an image
self.scene = QGraphicsScene()
def toggleErase(self):
self.erasing = not (self.erasing)
if self.erasing:
self.setErasing()
else:
self.disableErasing()
def setErasing(self):
self.erasing = True
self._temp_color = self.drawColor
self._temp_number = self.drawnNumber
self.setBrushColor(self.erasingColor)
self.brushColorChanged.emit(self.erasingColor)
self.setDrawnNumber(self.erasingNumber)
def disableErasing(self):
self.erasing = False
self.setBrushColor(self._temp_color)
self.brushColorChanged.emit(self.drawColor)
self.setDrawnNumber(self._temp_number)
def setBrushSize(self, size):
self.brushSize = size
self.brushSizeChanged.emit(self.brushSize)
def setDrawnNumber(self, num):
self.drawnNumber = num
self.drawnNumberChanged.emit(num)
def getBrushSize(self):
return self.brushSize
def brushSmaller(self):
b = self.brushSize
if b > self.minBrushSize:
self.setBrushSize(b - 1)
def brushBigger(self):
b = self.brushSize
if self.brushSize < self.maxBrushSize:
self.setBrushSize(b + 1)
def setBrushColor(self, color):
self.drawColor = color
self.brushColorChanged.emit(self.drawColor)
def beginDrawing(self, pos, sliceRect):
'''
pos -- QPointF-like
'''
self.sliceRect = sliceRect
self.scene.clear()
self.bb = QRect()
self.pos = QPointF(pos.x(), pos.y())
self._hasMoved = False
def endDrawing(self, pos):
has_moved = self._hasMoved # _hasMoved will change after calling moveTo
if has_moved:
self.moveTo(pos)
else:
assert (self.pos == pos)
self.moveTo(QPointF(pos.x() + 0.0001,
pos.y() + 0.0001)) # move a little
# Qt seems to use strange rules for determining which pixels to set when rendering a brush stroke to a QImage.
# We seem to get better results if we do the following:
# 1) Slightly offset the source window because apparently there is a small shift in the data
# 2) Render the scene to an image that is MUCH larger than the scene resolution (4x by 4x)
# 3) Downsample each 4x4 patch from the large image back to a single pixel in the final image,
# applying some threshold to determine if the final pixel is on or off.
tempi = QImage(QSize(4 * self.bb.width(), 4 * self.bb.height()),
QImage.Format_ARGB32_Premultiplied) #TODO: format
tempi.fill(0)
painter = QPainter(tempi)
# Offset the source window. At first I thought the right offset was 0.5, because
# that would seem to make sure points are rounded to pixel CENTERS, but
# experimentation indicates that 0.25 is slightly better for some reason...
source_rect = QRectF(QPointF(self.bb.x() + 0.25,
self.bb.y() + 0.25),
QSizeF(self.bb.width(), self.bb.height()))
target_rect = QRectF(QPointF(0, 0),
QSizeF(4 * self.bb.width(), 4 * self.bb.height()))
self.scene.render(painter, target=target_rect, source=source_rect)
painter.end()
# Now downsample: convert each 4x4 patch into a single pixel by summing and dividing
ndarr = qimage2ndarray.rgb_view(tempi)[:, :, 0].astype(int)
ndarr = ndarr.reshape((ndarr.shape[0], ) + (ndarr.shape[1] // 4, ) +
(4, ))
ndarr = ndarr.sum(axis=-1)
ndarr = ndarr.transpose()
ndarr = ndarr.reshape((ndarr.shape[0], ) + (ndarr.shape[1] // 4, ) +
(4, ))
ndarr = ndarr.sum(axis=-1)
ndarr = ndarr.transpose()
ndarr //= 4 * 4
downsample_threshold = (7. / 16) * 255
labels = numpy.where(ndarr >= downsample_threshold,
numpy.uint8(self.drawnNumber), numpy.uint8(0))
labels = labels.swapaxes(0, 1)
assert labels.shape[0] == self.bb.width()
assert labels.shape[1] == self.bb.height()
##
## ensure that at least one pixel is label when the brush size is 1
##
## this happens when the user just clicked without moving
## in that case the lineitem will be so tiny, that it won't be rendered
## into a single pixel by the code above
if not has_moved and self.brushSize <= 1 and numpy.count_nonzero(
labels) == 0:
labels[labels.shape[0] // 2,
labels.shape[1] // 2] = self.drawnNumber
self.brushStrokeAvailable.emit(QPointF(self.bb.x(), self.bb.y()),
labels)
def dumpDraw(self, pos):
res = self.endDrawing(pos)
self.beginDrawing(pos, self.sliceRect)
return res
def moveTo(self, pos):
#data coordinates
oldX, oldY = self.pos.x(), self.pos.y()
x, y = pos.x(), pos.y()
line = QGraphicsLineItem(oldX, oldY, x, y)
line.setPen(
QPen(QBrush(Qt.white), self.brushSize, Qt.SolidLine, Qt.RoundCap,
Qt.RoundJoin))
self.scene.addItem(line)
self._hasMoved = True
#update bounding Box
if not self.bb.isValid():
self.bb = QRect(QPoint(oldX, oldY), QSize(1, 1))
#grow bounding box
self.bb.setLeft(
min(self.bb.left(), max(0, x - self.brushSize // 2 - 1)))
self.bb.setRight(
max(self.bb.right(),
min(self.sliceRect[0] - 1, x + self.brushSize // 2 + 1)))
self.bb.setTop(min(self.bb.top(), max(0, y - self.brushSize // 2 - 1)))
self.bb.setBottom(
max(self.bb.bottom(),
min(self.sliceRect[1] - 1, y + self.brushSize // 2 + 1)))
#update/move position
self.pos = pos
class EEdge(QGraphicsObject):
def __init__(self, head, tail, uuid, arrowed=False):
QGraphicsObject.__init__(self)
self.__arrowed = arrowed
if not issubclass(head.__class__, dict) and not isinstance(tail.__class__, dict):
raise AttributeError
self.setZValue(0.0)
self.__kId = uuid
self.__head = head
self.__tail = tail
self.__path = QPainterPath()
self.__headPoint = QPointF(0.0, 0.0)
self.__tailPoint = QPointF(0.0, 0.0)
self.__head[ENode.kGuiAttributeParent].onMove.connect(self.update)
self.__tail[ENode.kGuiAttributeParent].onMove.connect(self.update)
self.__pen = QPen(QColor(43, 43, 43), 2, Qt.SolidLine)
self.update()
@property
def Id(self):
return self.__kId
@property
def Line(self):
return QLineF(self.__headPoint, self.__tailPoint)
@property
def Head(self):
return self.__head
@Head.setter
def Head(self, newHead):
self.__head = newHead
@property
def Tail(self):
return self.__tail
@Tail.setter
def Tail(self, newTail):
self.__tail = newTail
def pen(self):
return self.__pen
def setPen(self, pen):
if not isinstance(pen, QPen):
raise AttributeError
self.__pen = pen
def update(self):
QGraphicsObject.prepareGeometryChange(self)
self.__headPoint = self.mapFromItem(self.__head[ENode.kGuiAttributeParent],
self.__head[ENode.kGuiAttributePlug])
self.__tailPoint = self.mapFromItem(self.__tail[ENode.kGuiAttributeParent],
self.__tail[ENode.kGuiAttributePlug])
self.__headOffsetLine = QLineF(self.__headPoint, QPointF(self.__headPoint.x() + 15, self.__headPoint.y()))
self.__tailOffsetLine = QLineF(self.__tailPoint, QPointF(self.__tailPoint.x() - 15, self.__tailPoint.y()))
line = QLineF(self.__headPoint, self.__tailPoint)
self.__line = line
def boundingRect(self):
extra = (self.pen().width() * 64) / 2
return QRectF(self.__line.p1(),
QSizeF(self.__line.p2().x() - self.__line.p1().x(),
self.__line.p2().y() - self.__line.p1().y())).normalized().adjusted(-extra,
-extra,
extra,
extra)
def shape(self):
if self.__arrowed:
return QGraphicsObject.shape(self)
return QPainterPath(self.__path)
def getIntersectPoint(self, polygon, point1, point2):
p1 = polygon[0] + point1
intersectPoint = QPointF()
for i in polygon:
p2 = i + point2
polyLine = QLineF(p1, p2)
intersectType = polyLine.intersect(QLineF(point1, point2), intersectPoint)
if intersectType == QLineF.BoundedIntersection:
break
p1 = p2
return intersectPoint
def getArrow(self, line):
Pi = math.pi
TwoPi = 2.0 * Pi
arrowSize = 14
if line.length() > 0:
angle = math.acos(line.dx() / line.length())
if line.dy() >= 0:
angle = TwoPi - angle
sourceArrowP1 = line.p1() + QPointF(math.sin(angle + Pi / 3) * arrowSize,
math.cos(angle + Pi / 3) * arrowSize)
sourceArrowP2 = line.p1() + QPointF(math.sin(angle + Pi - Pi / 3) * arrowSize,
math.cos(angle + Pi - Pi / 3) * arrowSize)
destinationArrowP1 = line.p2() + QPointF(math.sin(angle - Pi / 3) * arrowSize,
math.cos(angle - Pi / 3) * arrowSize)
destinationArrowP2 = line.p2() + QPointF(math.sin(angle - Pi + Pi / 3) * arrowSize,
math.cos(angle - Pi + Pi / 3) * arrowSize)
arrows = [QPolygonF([line.p1(), sourceArrowP1, sourceArrowP2]),
QPolygonF([line.p2(), destinationArrowP1, destinationArrowP2])]
return arrows[0]
return QPolygonF()
def drawPath(self, startPoint, endPoint):
path = QPainterPath()
one = (QPointF(endPoint.x(), startPoint.y()) + startPoint) / 2
two = (QPointF(startPoint.x(), endPoint.y()) + endPoint) / 2
path.moveTo(startPoint)
if startPoint.x() > endPoint.x():
dist = (startPoint.x() - endPoint.x()) * 2
tLine = QLineF((dist / 2), 0.0, -(dist / 2), 0.0).translated(QLineF(startPoint, endPoint).pointAt(0.5))
one = tLine.p1()
two = tLine.p2()
path.cubicTo(one, two, endPoint)
self.__path = path
return path, QLineF(one, two)
def paint(self, painter, option, widget=None):
painter.setPen(self.pen())
if not self.__arrowed:
headCenter = self.mapFromItem(self.__head[ENode.kGuiAttributeParent],
self.__head[ENode.kGuiAttributeParent].boundingRect().center())
tailCenter = self.mapFromItem(self.__tail[ENode.kGuiAttributeParent],
self.__tail[ENode.kGuiAttributeParent].boundingRect().center())
centerPoint = QLineF(headCenter, tailCenter).pointAt(0.5)
centerPoint.setX(self.__headOffsetLine.p2().x())
centerPoint.setX(self.__tailOffsetLine.p2().x())
painter.drawPath(self.drawPath(self.__headOffsetLine.p1(), self.__tailOffsetLine.p1())[0])
else:
painter.drawLine(self.__line)
painter.setPen(Qt.NoPen)
painter.setBrush(QColor(43, 43, 43))
headCutPoint = self.getIntersectPoint(self.__head[ENode.kGuiAttributeParent].Polygon,
self.__line.p1(), self.__line.p2())
tailCutPoint = self.getIntersectPoint(self.__tail[ENode.kGuiAttributeParent].Polygon,
self.__line.p2(), self.__line.p1())
painter.drawPolygon(self.getArrow(QLineF(headCutPoint, tailCutPoint)))
class TracepointWaveScene(QtGui.QGraphicsScene):
'''QGraphicsView for wave'''
def __init__(self, type_, values, duration):
'''CTOR
@param type_: string, must be in supported types
@param values: list of values of variable
@param duration: integer, holds stepwidth of wave
'''
QtGui.QGraphicsScene.__init__(self)
self.supportedTypes = ["bool", "int", "float", "double"]
self.vSpace = 10
self.values = []
self.curPos = QPointF(0, 2)
self.type = type_
self.width = duration
self.valFont = QtGui.QFont("Arial", 7)
self.valFontColor = QtGui.QColor()
self.valFontColor.setGreen(100)
self.setSceneRect(0, 0, self.width, 15)
for v in values:
self.appendValue(v, duration)
def getSupportedTypes(self):
''' Returns supported waveform types
@return list[string]
'''
return self.supportedTypes
def getType(self):
''' @return string identifying type of TracepointWaveScene'''
return self.type
def appendValue(self, value, duration):
''' Append value to wave
@param value: value to add
@param duration: integer, defines duration(length) of value in wave
'''
drawEdge = len(
self.values) > 0 and self.values[len(self.values) - 1] != value
if drawEdge:
self.__drawEdge()
self.values.append(value)
self.__drawLine(value, duration, drawEdge or len(self.values) == 1)
self.setSceneRect(0, 0, self.width, 15)
def __drawEdge(self):
''' Draws an edge depending on the type of the waveform. '''
if self.type == "bool":
self.addItem(
QtGui.QGraphicsLineItem(
QLineF(
self.curPos,
QPointF(self.curPos.x(),
self.curPos.y() + self.vSpace))))
elif self.type in self.supportedTypes:
self.addItem(
QtGui.QGraphicsLineItem(
QLineF(
self.curPos,
QPointF(self.curPos.x() + 2,
self.curPos.y() + self.vSpace))))
self.addItem(
QtGui.QGraphicsLineItem(
QLineF(
QPointF(self.curPos.x() + 2, self.curPos.y()),
QPointF(self.curPos.x(),
self.curPos.y() + self.vSpace))))
def __drawLine(self, value, duration, printvalue=True):
''' Draws a line depending on the type of the waveform.
@param value: value to add to wave
@param duration: integer, defines duration(length) of value in wave
@param printvalue: bool, add values to waveform (for value-type waveforms only)
'''
self.width = self.width + duration
tmp = self.curPos
self.curPos = QPointF(self.curPos.x() + duration, self.curPos.y())
if self.type == "bool":
if value:
self.addItem(QtGui.QGraphicsLineItem(QLineF(tmp, self.curPos)))
else:
self.addItem(
QtGui.QGraphicsLineItem(tmp.x(),
tmp.y() + self.vSpace,
self.curPos.x(),
self.curPos.y() + self.vSpace))
elif self.type in self.supportedTypes:
if printvalue:
text = QtGui.QGraphicsTextItem(str(value))
text.setFont(self.valFont)
text.setDefaultTextColor(self.valFontColor)
text.setPos(QPointF(tmp.x() + 4, tmp.y() - 5))
self.addItem(text)
self.addItem(QtGui.QGraphicsLineItem(QLineF(tmp, self.curPos)))
self.addItem(
QtGui.QGraphicsLineItem(tmp.x(),
tmp.y() + self.vSpace, self.curPos.x(),
self.curPos.y() + self.vSpace))
class BrushingModel(QObject):
brushSizeChanged = pyqtSignal(int)
brushColorChanged = pyqtSignal(QColor)
brushStrokeAvailable = pyqtSignal(QPointF, object)
drawnNumberChanged = pyqtSignal(int)
minBrushSize = 1
maxBrushSize = 61
defaultBrushSize = 3
defaultDrawnNumber = 1
defaultColor = Qt.white
erasingColor = Qt.black
erasingNumber = 100
def __init__(self, parent=None):
QObject.__init__(self, parent=parent)
self.sliceRect = None
self.bb = QRect() #bounding box enclosing the drawing
self.brushSize = self.defaultBrushSize
self.drawColor = self.defaultColor
self._temp_color = None
self._temp_number = None
self.drawnNumber = self.defaultDrawnNumber
self.pos = None
self.erasing = False
self._hasMoved = False
self.drawOnto = None
#an empty scene, where we add all drawn line segments
#a QGraphicsLineItem, and which we can use to then
#render to an image
self.scene = QGraphicsScene()
def toggleErase(self):
self.erasing = not (self.erasing)
if self.erasing:
self.setErasing()
else:
self.disableErasing()
def setErasing(self):
self.erasing = True
self._temp_color = self.drawColor
self._temp_number = self.drawnNumber
self.setBrushColor(self.erasingColor)
self.brushColorChanged.emit(self.erasingColor)
self.setDrawnNumber(self.erasingNumber)
def disableErasing(self):
self.erasing = False
self.setBrushColor(self._temp_color)
self.brushColorChanged.emit(self.drawColor)
self.setDrawnNumber(self._temp_number)
def setBrushSize(self, size):
self.brushSize = size
self.brushSizeChanged.emit(self.brushSize)
def setDrawnNumber(self, num):
self.drawnNumber = num
self.drawnNumberChanged.emit(num)
def getBrushSize(self):
return self.brushSize
def brushSmaller(self):
b = self.brushSize
if b > self.minBrushSize:
self.setBrushSize(b - 1)
def brushBigger(self):
b = self.brushSize
if self.brushSize < self.maxBrushSize:
self.setBrushSize(b + 1)
def setBrushColor(self, color):
self.drawColor = color
self.brushColorChanged.emit(self.drawColor)
def beginDrawing(self, pos, sliceRect):
'''
pos -- QPointF-like
'''
self.sliceRect = sliceRect
self.scene.clear()
self.bb = QRect()
self.pos = QPointF(pos.x(), pos.y())
self._hasMoved = False
def endDrawing(self, pos):
has_moved = self._hasMoved # _hasMoved will change after calling moveTo
if has_moved:
self.moveTo(pos)
else:
assert (self.pos == pos)
self.moveTo(QPointF(pos.x() + 0.0001,
pos.y() + 0.0001)) # move a little
tempi = QImage(QSize(self.bb.width(), self.bb.height()),
QImage.Format_ARGB32_Premultiplied) #TODO: format
tempi.fill(0)
painter = QPainter(tempi)
self.scene.render(painter,
target=QRectF(),
source=QRectF(
QPointF(self.bb.x(), self.bb.y()),
QSizeF(self.bb.width(), self.bb.height())))
painter.end()
ndarr = qimage2ndarray.rgb_view(tempi)[:, :, 0]
labels = numpy.where(ndarr > 0, numpy.uint8(self.drawnNumber),
numpy.uint8(0))
labels = labels.swapaxes(0, 1)
assert labels.shape[0] == self.bb.width()
assert labels.shape[1] == self.bb.height()
##
## ensure that at least one pixel is label when the brush size is 1
##
## this happens when the user just clicked without moving
## in that case the lineitem will be so tiny, that it won't be rendered
## into a single pixel by the code above
if not has_moved and self.brushSize <= 1 and numpy.count_nonzero(
labels) == 0:
labels[labels.shape[0] // 2,
labels.shape[1] // 2] = self.drawnNumber
self.brushStrokeAvailable.emit(QPointF(self.bb.x(), self.bb.y()),
labels)
def dumpDraw(self, pos):
res = self.endDrawing(pos)
self.beginDrawing(pos, self.sliceRect)
return res
def moveTo(self, pos):
#data coordinates
oldX, oldY = self.pos.x(), self.pos.y()
x, y = pos.x(), pos.y()
line = QGraphicsLineItem(oldX, oldY, x, y)
line.setPen(
QPen(QBrush(Qt.white), self.brushSize, Qt.SolidLine, Qt.RoundCap,
Qt.RoundJoin))
self.scene.addItem(line)
self._hasMoved = True
#update bounding Box
if not self.bb.isValid():
self.bb = QRect(QPoint(oldX, oldY), QSize(1, 1))
#grow bounding box
self.bb.setLeft(min(self.bb.left(), max(0,
x - self.brushSize / 2 - 1)))
self.bb.setRight(
max(self.bb.right(),
min(self.sliceRect[0] - 1, x + self.brushSize / 2 + 1)))
self.bb.setTop(min(self.bb.top(), max(0, y - self.brushSize / 2 - 1)))
self.bb.setBottom(
max(self.bb.bottom(),
min(self.sliceRect[1] - 1, y + self.brushSize / 2 + 1)))
#update/move position
self.pos = pos
class BrushingModel(QObject):
brushSizeChanged = pyqtSignal(int)
brushColorChanged = pyqtSignal(QColor)
brushStrokeAvailable = pyqtSignal(QPointF, object)
drawnNumberChanged = pyqtSignal(int)
minBrushSize = 1
maxBrushSize = 61
defaultBrushSize = 3
defaultDrawnNumber = 1
defaultColor = Qt.white
erasingColor = Qt.black
erasingNumber = 100
def __init__(self, parent=None):
QObject.__init__(self, parent=parent)
self.sliceRect = None
self.bb = QRect() #bounding box enclosing the drawing
self.brushSize = self.defaultBrushSize
self.drawColor = self.defaultColor
self._temp_color = None
self._temp_number = None
self.drawnNumber = self.defaultDrawnNumber
self.pos = None
self.erasing = False
self._hasMoved = False
self.drawOnto = None
#an empty scene, where we add all drawn line segments
#a QGraphicsLineItem, and which we can use to then
#render to an image
self.scene = QGraphicsScene()
def toggleErase(self):
self.erasing = not(self.erasing)
if self.erasing:
self.setErasing()
else:
self.disableErasing()
def setErasing(self):
self.erasing = True
self._temp_color = self.drawColor
self._temp_number = self.drawnNumber
self.setBrushColor(self.erasingColor)
self.brushColorChanged.emit(self.erasingColor)
self.setDrawnNumber(self.erasingNumber)
def disableErasing(self):
self.erasing = False
self.setBrushColor(self._temp_color)
self.brushColorChanged.emit(self.drawColor)
self.setDrawnNumber(self._temp_number)
def setBrushSize(self, size):
self.brushSize = size
self.brushSizeChanged.emit(self.brushSize)
def setDrawnNumber(self, num):
self.drawnNumber = num
self.drawnNumberChanged.emit(num)
def getBrushSize(self):
return self.brushSize
def brushSmaller(self):
b = self.brushSize
if b > self.minBrushSize:
self.setBrushSize(b-1)
def brushBigger(self):
b = self.brushSize
if self.brushSize < self.maxBrushSize:
self.setBrushSize(b+1)
def setBrushColor(self, color):
self.drawColor = color
self.brushColorChanged.emit(self.drawColor)
def beginDrawing(self, pos, sliceRect):
'''
pos -- QPointF-like
'''
self.sliceRect = sliceRect
self.scene.clear()
self.bb = QRect()
self.pos = QPointF(pos.x(), pos.y())
self._hasMoved = False
def endDrawing(self, pos):
has_moved = self._hasMoved # _hasMoved will change after calling moveTo
if has_moved:
self.moveTo(pos)
else:
assert(self.pos == pos)
self.moveTo(QPointF(pos.x()+0.0001, pos.y()+0.0001)) # move a little
tempi = QImage(QSize(self.bb.width(), self.bb.height()), QImage.Format_ARGB32_Premultiplied) #TODO: format
tempi.fill(0)
painter = QPainter(tempi)
self.scene.render(painter, target=QRectF(), source=QRectF(QPointF(self.bb.x(), self.bb.y()), QSizeF(self.bb.width(), self.bb.height())))
painter.end()
ndarr = qimage2ndarray.rgb_view(tempi)[:,:,0]
labels = numpy.where(ndarr>0,numpy.uint8(self.drawnNumber),numpy.uint8(0))
labels = labels.swapaxes(0,1)
assert labels.shape[0] == self.bb.width()
assert labels.shape[1] == self.bb.height()
##
## ensure that at least one pixel is label when the brush size is 1
##
## this happens when the user just clicked without moving
## in that case the lineitem will be so tiny, that it won't be rendered
## into a single pixel by the code above
if not has_moved and self.brushSize <= 1 and numpy.count_nonzero(labels) == 0:
labels[labels.shape[0]//2, labels.shape[1]//2] = self.drawnNumber
self.brushStrokeAvailable.emit(QPointF(self.bb.x(), self.bb.y()), labels)
def dumpDraw(self, pos):
res = self.endDrawing(pos)
self.beginDrawing(pos, self.sliceRect)
return res
def moveTo(self, pos):
#data coordinates
oldX, oldY = self.pos.x(), self.pos.y()
x,y = pos.x(), pos.y()
line = QGraphicsLineItem(oldX, oldY, x, y)
line.setPen(QPen( QBrush(Qt.white), self.brushSize, Qt.SolidLine, Qt.RoundCap, Qt.RoundJoin))
self.scene.addItem(line)
self._hasMoved = True
#update bounding Box
if not self.bb.isValid():
self.bb = QRect(QPoint(oldX,oldY), QSize(1,1))
#grow bounding box
self.bb.setLeft( min(self.bb.left(), max(0, x-self.brushSize/2-1) ) )
self.bb.setRight( max(self.bb.right(), min(self.sliceRect[0]-1, x+self.brushSize/2+1) ) )
self.bb.setTop( min(self.bb.top(), max(0, y-self.brushSize/2-1) ) )
self.bb.setBottom(max(self.bb.bottom(), min(self.sliceRect[1]-1, y+self.brushSize/2+1) ) )
#update/move position
self.pos = pos
class Particle(QGraphicsItem):
def __init__(self, parent=None):
super(Particle, self).__init__(parent)
self.effect = QGraphicsBlurEffect()
self.blur_radius = random.uniform(0.8, 1.6)
self.effect.setBlurRadius(self.blur_radius)
self.setGraphicsEffect(self.effect)
self.height = random.uniform(1, 6)
self.width = random.uniform(1, 6)
self.depth = 1
self.setZValue(self.depth)
self.newPos = QPointF()
self.animation_timer = QTimer()
self.animation_timer.setInterval(1000 / 25)
self.animation_timer.timeout.connect(self.advance)
self.animation_timer.start()
self.speed = 1
self.next_pos = QPointF(0, 0)
self.animated = True
self.max_speed = 3.0
self.color = QColor(0, 0, 0, 50)
# self.change_position_timer = QTimer()
# self.change_position_timer.setInterval(5000)
# self.change_position_timer.timeout.connect(self.calculate_next_pos)
def animate(self, bool):
self.animated = bool
def calculate_forces(self):
# Sum up all forces pushing this item away.
xvel = 0.0
yvel = 0.0
line = QtCore.QLineF(self.next_pos, self.pos())
dx = line.dx()
dy = line.dy()
l = math.sqrt(math.pow(dx, 2) + math.pow(dy, 2))
# l = 2.0 * (dx * dx + dy * dy)
if l > 0:
xvel -= (dx * self.speed) / l
yvel -= (dy * self.speed) / l
if l < 10:
self.calculate_next_pos()
scene_rect = self.scene().sceneRect()
self.newPos = self.pos() + QtCore.QPointF(xvel, yvel)
self.newPos.setX(
min(max(self.newPos.x(),
scene_rect.left() + 10),
scene_rect.right() - 10))
self.newPos.setY(
min(max(self.newPos.y(),
scene_rect.top() + 10),
scene_rect.bottom() - 10))
def calculate_next_pos(self):
particle_x = random.uniform(-self.scene().sceneRect().width() / 2,
self.scene().sceneRect().width() / 2)
particle_y = random.uniform(-self.scene().sceneRect().height() / 2,
self.scene().sceneRect().height() / 2)
self.next_pos = QPointF(particle_x, particle_y)
self.blur_radius = random.uniform(0.8, 1.6)
self.effect.setBlurRadius(self.blur_radius)
self.setGraphicsEffect(self.effect)
self.height = random.uniform(1, 6)
self.width = random.uniform(1, 6)
self.depth = random.uniform(0, 6)
self.speed *= random.uniform(0.1, 2.0)
self.speed %= self.max_speed
# print self.speed
def advance(self):
if self.animated:
self.calculate_forces()
if self.newPos == self.pos():
return False
self.setPos(self.newPos)
return True
else:
return False
def paint(self, painter, options, widget=None):
# painter.drawRect(self.boundingRect())
painter.setBrush(self.color)
painter.setPen(self.color)
painter.drawEllipse(-self.width / 2, -self.height / 2, self.width,
self.height)
def boundingRect(self):
return QRectF(-self.width / 2, -self.height / 2, self.width,
self.height)
def reduce_speed(self, factor=0.9):
if factor < 1 and factor > 0:
self.speed *= factor
def increase_speed(self, factor=1.1):
if factor > 1:
self.speed *= factor
def set_color(self, color):
self.color = color
def instant_pos_change(self):
particle_x = random.uniform(-self.scene().sceneRect().width() / 2,
self.scene().sceneRect().width() / 2)
particle_y = random.uniform(-self.scene().sceneRect().height() / 2,
self.scene().sceneRect().height() / 2)
self.setPos(QPointF(particle_x, particle_y))
self.next_pos = QPointF(particle_x, particle_y)
class QgsMapToolAnnotation(QgsMapTool):
def __init__(self, canvas):
self.mCanvas = canvas
QgsMapTool.__init__(self, self.mCanvas)
self.mCurrentMoveAction = QgsAnnotationItem.NoAction
self.mLastMousePosition = QPointF(0, 0)
self.mCursor = QCursor(Qt.ArrowCursor)
def createItem(self, e):
return None
def createItemEditor(self, item):
if (item == None):
return None
item._class_ = QgsTextAnnotationItem
if isinstance(item, QgsTextAnnotationItem):
return QgsTextAnnotationDialog(item)
return None
def canvasReleaseEvent(self, e):
self.mCurrentMoveAction = QgsAnnotationItem.NoAction
self.mCanvas.setCursor(self.mCursor)
def canvasPressEvent(self, e):
sItem = self.selectedItem()
if (sItem != None):
self.mCurrentMoveAction = sItem.moveActionForPosition(e.posF())
if (self.mCurrentMoveAction != QgsAnnotationItem.NoAction):
return
if (sItem == None
or self.mCurrentMoveAction == QgsAnnotationItem.NoAction):
self.mCanvas.scene().clearSelection()
existingItem = self.itemAtPos(e.posF())
if (existingItem != None):
existingItem.setSelected(True)
else:
self.createItem(e)
def keyPressEvent(self, e):
if (e.key() == Qt.Key_T and e.modifiers() == Qt.ControlModifier):
self.toggleTextItemVisibilities()
sItem = self.selectedItem()
if (sItem != None):
if (e.key() == Qt.Key_Backspace or e.key() == Qt.Key_Delete):
neutralCursor = QCursor(
sItem.cursorShapeForAction(QgsAnnotationItem.NoAction))
self.mCanvas.scene().removeItem(sItem)
self.mCanvas.setCursor(neutralCursor)
#// Override default shortcut management in MapCanvas
e.ignore()
def canvasMoveEvent(self, e):
sItem = self.selectedItem()
if (sItem != None and (e.buttons() & Qt.LeftButton)):
if (self.mCurrentMoveAction == QgsAnnotationItem.MoveMapPosition):
sItem.setMapPosition(self.toMapCoordinates(e.pos()))
sItem.update()
elif (self.mCurrentMoveAction ==
QgsAnnotationItem.MoveFramePosition):
if (sItem.mapPositionFixed()):
sItem.setOffsetFromReferencePoint(
sItem.offsetFromReferencePoint() +
(e.posF() - self.mLastMousePosition))
else:
newCanvasPos = sItem.pos() + (e.posF() -
self.mLastMousePosition)
sItem.setMapPosition(
self.toMapCoordinates(newCanvasPos.toPoint()))
sItem.update()
elif (self.mCurrentMoveAction != QgsAnnotationItem.NoAction):
size = sItem.frameSize()
xmin = sItem.offsetFromReferencePoint().x()
ymin = sItem.offsetFromReferencePoint().y()
xmax = xmin + size.width()
ymax = ymin + size.height()
if (self.mCurrentMoveAction
== QgsAnnotationItem.ResizeFrameRight
or self.mCurrentMoveAction
== QgsAnnotationItem.ResizeFrameRightDown
or self.mCurrentMoveAction
== QgsAnnotationItem.ResizeFrameRightUp):
xmax += e.posF().x() - self.mLastMousePosition.x()
if (self.mCurrentMoveAction
== QgsAnnotationItem.ResizeFrameLeft
or self.mCurrentMoveAction
== QgsAnnotationItem.ResizeFrameLeftDown
or self.mCurrentMoveAction
== QgsAnnotationItem.ResizeFrameLeftUp):
xmin += e.posF().x() - self.mLastMousePosition.x()
if (self.mCurrentMoveAction == QgsAnnotationItem.ResizeFrameUp
or self.mCurrentMoveAction
== QgsAnnotationItem.ResizeFrameLeftUp
or self.mCurrentMoveAction
== QgsAnnotationItem.ResizeFrameRightUp):
ymin += e.posF().y() - self.mLastMousePosition.y()
if (self.mCurrentMoveAction
== QgsAnnotationItem.ResizeFrameDown
or self.mCurrentMoveAction
== QgsAnnotationItem.ResizeFrameLeftDown
or self.mCurrentMoveAction
== QgsAnnotationItem.ResizeFrameRightDown):
ymax += e.posF().y() - self.mLastMousePosition.y()
#//switch min / max if necessary
tmp = 0.0
if (xmax < xmin):
tmp = xmax
xmax = xmin
xmin = tmp
if (ymax < ymin):
tmp = ymax
ymax = ymin
ymin = tmp
sItem.setOffsetFromReferencePoint(QPointF(xmin, ymin))
sItem.setFrameSize(QSizeF(xmax - xmin, ymax - ymin))
sItem.update()
elif (sItem != None):
moveAction = sItem.moveActionForPosition(e.posF())
self.mCanvas.setCursor(
QCursor(sItem.cursorShapeForAction(moveAction)))
self.mLastMousePosition = e.posF()
def canvasDoubleClickEvent(self, e):
item = self.itemAtPos(e.posF())
if (item == None):
return
itemEditor = self.createItemEditor(item)
if (itemEditor != None):
itemEditor.exec_()
def itemAtPos(self, pos):
graphicItems = self.mCanvas.items(pos.toPoint())
for annotationItem in graphicItems:
annotationItem._class_ = QgsAnnotationItem
if (isinstance(annotationItem, QgsAnnotationItem)):
return annotationItem
return None
def selectedItem(self):
gItemList = self.mCanvas.scene().selectedItems()
for aItem in gItemList:
aItem._class_ = QgsAnnotationItem
if (isinstance(aItem, QgsAnnotationItem)):
return aItem
return None
def annotationItems(self):
annotationItemList = []
itemList = self.mCanvas.scene().items()
for aItem in itemList:
aItem._class_ = QgsAnnotationItem
if (isinstance(aItem, QgsAnnotationItem)):
self.annotationItemList.append(aItem)
return annotationItemList
def toggleTextItemVisibilities(self):
itemList = self.annotationItems()
for textItem in itemList:
textItem._class_ = QgsTextAnnotationItem
if (isinstance(textItem, QgsTextAnnotationItem)):
textItem.setVisible(not textItem.isVisible())
class ImageView2D(QGraphicsView):
focusChanged = pyqtSignal()
"""
Shows a ImageScene2D to the user and allows for interactive
scrolling, panning, zooming etc.
"""
@property
def sliceShape(self):
"""
(width, height) of the scene.
Specifying the shape is necessary to allow for correct
scrollbars
"""
return self._sliceShape
@sliceShape.setter
def sliceShape(self, s):
self._sliceShape = s
self.scene().dataShape = s
self._crossHairCursor.dataShape = s
self._sliceIntersectionMarker.dataShape = s
@property
def hud(self):
return self._hud
@hud.setter
def hud(self, hud):
"""
Sets up a heads up display at the upper left corner of the view
hud -- a QWidget
"""
self._hud = hud
self.setLayout(QVBoxLayout())
self.layout().setContentsMargins(0, 0, 0, 0)
self.layout().addWidget(self._hud)
self.layout().addStretch()
scene = self.scene()
hud.zoomToFitButtonClicked.connect(self.fitImage)
hud.resetZoomButtonClicked.connect(self.doScaleTo)
hud.rotLeftButtonClicked.connect(scene._onRotateLeft)
hud.rotRightButtonClicked.connect(scene._onRotateRight)
hud.swapAxesButtonClicked.connect(scene._onSwapAxes)
scene.axesChanged.connect(hud.setAxes)
def __init__(self, parent, imagescene2d):
"""
Constructs a view upon a ImageScene2D
imagescene2d -- a ImgeScene2D instance
"""
QGraphicsView.__init__(self, parent)
self.setScene(imagescene2d)
self.mousePos = QPointF(0, 0)
# FIXME: These int members shadow QWidget.x() and QWidget.y(), which can lead to confusion when debugging...
self.x, self.y = (0, 0)
self.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self._isRubberBandZoom = False
self._cursorBackup = None
#these attributes are exposed as public properties above
self._sliceShape = None #2D shape of this view's shown image
self._slices = None #number of slices that are stacked
self._hud = None
self._crossHairCursor = None
self._sliceIntersectionMarker = None
self._ticker = QTimer(self)
self._ticker.timeout.connect(self._tickerEvent)
#
# Setup the Viewport for fast painting
#
#With these flags turned on we could handle the drawing of the
#white background ourselves thus removing the flicker
#when scrolling fast through the slices
#self.viewport().setAttribute(Qt.WA_OpaquePaintEvent)
#self.viewport().setAttribute(Qt.WA_NoSystemBackground)
#self.viewport().setAttribute(Qt.WA_PaintOnScreen)
#self.viewport().setAutoFillBackground(False)
self.setViewportUpdateMode(QGraphicsView.MinimalViewportUpdate)
#as rescaling images is slow if done in software,
#we use Qt's built-in background caching mode so that the cached
#image need only be blitted on the screen when we only move
#the cursor
self.setCacheMode(QGraphicsView.CacheBackground)
self.setRenderHint(QPainter.Antialiasing, False)
self._crossHairCursor = CrossHairCursor(self.scene())
self._crossHairCursor.setZValue(99)
self._sliceIntersectionMarker = SliceIntersectionMarker(self.scene())
self._sliceIntersectionMarker.setZValue(100)
self._sliceIntersectionMarker.setVisibility(True)
#FIXME: this should be private, but is currently used from
# within the image scene renderer
self.tempImageItems = []
self._zoomFactor = 1.0
#for panning
self._lastPanPoint = QPoint()
self._dragMode = False
self._deltaPan = QPointF(0, 0)
#FIXME: Is there are more elegant way to handle this?
self.setMouseTracking(True)
# invisible cursor to enable custom cursor
self._hiddenCursor = QCursor(Qt.BlankCursor)
# For screen recording BlankCursor doesn't work
#self.hiddenCursor = QCursor(Qt.ArrowCursor)
def _cleanUp(self):
self._ticker.stop()
del self._ticker
def setZoomFactor(self, zoom):
if self._hud is not None:
self._hud.zoomLevelIndicator.updateLevel(zoom)
self._zoomFactor = zoom
def indicateSlicingPositionSettled(self, settled):
self.scene().indicateSlicingPositionSettled(settled)
def viewportRect(self):
"""
Return a QRectF giving the part of the scene currently displayed in this
widget's viewport in the scene's coordinates
"""
r = self.mapToScene(self.viewport().geometry()).boundingRect()
return r
def mapScene2Data(self, pos):
return self.scene().scene2data.map(pos)
def mapMouseCoordinates2Data(self, pos):
return self.mapScene2Data(self.mapToScene(pos))
def _panning(self):
hBar = self.horizontalScrollBar()
vBar = self.verticalScrollBar()
vBar.setValue(vBar.value() - self._deltaPan.y())
if self.isRightToLeft():
hBar.setValue(hBar.value() + self._deltaPan.x())
else:
hBar.setValue(hBar.value() - self._deltaPan.x())
def _deaccelerate(self, speed, a=1, maxVal=64):
x = self._qBound(-maxVal, speed.x(), maxVal)
y = self._qBound(-maxVal, speed.y(), maxVal)
ax, ay = self._setdeaccelerateAxAy(speed.x(), speed.y(), a)
if x > 0:
x = max(0.0, x - a * ax)
elif x < 0:
x = min(0.0, x + a * ax)
if y > 0:
y = max(0.0, y - a * ay)
elif y < 0:
y = min(0.0, y + a * ay)
return QPointF(x, y)
def _qBound(self, minVal, current, maxVal):
"""PyQt4 does not wrap the qBound function from Qt's global namespace
This is equivalent."""
return max(min(current, maxVal), minVal)
def _setdeaccelerateAxAy(self, x, y, a):
x = abs(x)
y = abs(y)
if x > y:
if y > 0:
ax = int(x / y)
if ax != 0:
return ax, 1
else:
return x / a, 1
if y > x:
if x > 0:
ay = int(y / x)
if ay != 0:
return 1, ay
else:
return 1, y / a
return 1, 1
def _tickerEvent(self):
if self._deltaPan.x() == 0.0 and self._deltaPan.y(
) == 0.0 or self._dragMode == True:
self._ticker.stop()
else:
self._deltaPan = self._deaccelerate(self._deltaPan)
self._panning()
def zoomOut(self):
self.doScale(0.9)
def zoomIn(self):
self.doScale(1.1)
def fitImage(self):
self.fitInView(self.sceneRect(), Qt.KeepAspectRatio)
width, height = self.size().width() / self.sceneRect().width(
), self.height() / self.sceneRect().height()
self.setZoomFactor(min(width, height))
def centerImage(self):
self.centerOn(self.sceneRect().width() / 2 + self.sceneRect().x(),
self.sceneRect().height() / 2 + self.sceneRect().y())
def toggleHud(self):
if self._hud is not None:
self._hud.setVisible(not self._hud.isVisible())
def setHudVisible(self, visible):
if self._hud is not None:
self._hud.setVisible(visible)
def hudVisible(self):
return self._hud.isVisible()
def focusInEvent(self, event):
self.setStyleSheet(
".QFrame {border: 2px solid white; border-radius: 4px;}")
self.focusChanged.emit()
def focusOutEvent(self, event):
self.setStyleSheet(".QFrame {}")
def changeViewPort(self, qRectf):
self.fitInView(qRectf, mode=Qt.KeepAspectRatio)
width, height = self.size().width() / qRectf.width(), self.height(
) / qRectf.height()
self.setZoomFactor(min(width, height))
def doScale(self, factor):
self.setZoomFactor(self._zoomFactor * factor)
self.scale(factor, factor)
def doScaleTo(self, zoom=1):
factor = (1 / self._zoomFactor) * zoom
self.setZoomFactor(zoom)
self.scale(factor, factor)
def render(self):
""" Main-Method of the Pointer-Class <br>
calculates/renders/draws the Lines of the Arrow
"""
points = QPolygonF()
self.toView.x()
pM1 = QPointF(self.fromView.x() + self.fromView.size().width()/2,
self.fromView.y() + self.fromView.size().height()/2)
pM2 = QPointF(self.toView.x() + self.toView.size().width()/2,
self.toView.y() + self.toView.size().height()/2)
deltaX = pM2.x()-pM1.x()
deltaY = pM2.y()-pM1.y()
if deltaX == 0:
deltaX = 0.01
if deltaY == 0:
deltaY = 0.01
if deltaX >= 0:
if deltaY >= 0:
# rechts unten
if deltaX/deltaY >= self.fromView.size().width()/self.fromView.size().height():
# Start von rechter Seite
pStart = QPointF(pM1.x() + self.fromView.size().width()/2,
pM1.y() + (self.fromView.size().width()/2)*(deltaY/deltaX))
else:
# Start von unterer Seite
pStart = QPointF(pM1.x() + (self.fromView.size().height()/2)*(deltaX/deltaY),
pM1.y() + self.fromView.size().height()/2)
if deltaX/deltaY >= self.toView.size().width()/self.toView.size().height():
# Ende bei linker Seite
pEnd = QPointF(pM2.x() - self.toView.size().width()/2,
pM2.y() - (self.toView.size().width()/2)*(deltaY/deltaX))
else:
# Ende bei oberer Seite
pEnd = QPointF(pM2.x() - (self.toView.size().height()/2)*(deltaX/deltaY),
pM2.y() - self.toView.size().height()/2)
else:
# rechts oben
if deltaX/deltaY*-1 >= self.fromView.size().width()/self.fromView.size().height():
# Start von rechter Seite
pStart = QPointF(pM1.x() + self.fromView.size().width()/2,
pM1.y() + (self.fromView.size().width()/2)*(deltaY/deltaX))
else:
# Start von oberer Seite
pStart = QPointF(pM1.x() - (self.fromView.size().height()/2)*(deltaX/deltaY),
pM1.y() - self.fromView.size().height()/2)
if deltaX/deltaY*-1 >= self.toView.size().width()/self.toView.size().height():
# Ende bei linker Seite
pEnd = QPointF(pM2.x() - self.toView.size().width()/2,
pM2.y() - (self.toView.size().width()/2)*(deltaY/deltaX))
else:
# Ende bei unterer Seite
pEnd = QPointF(pM2.x() + (self.toView.size().height()/2)*(deltaX/deltaY),
pM2.y() + self.toView.size().height()/2)
else:
if deltaY >= 0:
# links unten
if deltaX/deltaY*-1 >= self.fromView.size().width()/self.fromView.size().height():
# Start von linker Seite
pStart = QPointF(pM1.x() - self.fromView.size().width()/2,
pM1.y() - (self.fromView.size().width()/2)*(deltaY/deltaX))
else:
# Start von unterer Seite
pStart = QPointF(pM1.x() + (self.fromView.size().height()/2)*(deltaX/deltaY),
pM1.y() + self.fromView.size().height()/2)
if deltaX/deltaY*-1 >= self.toView.size().width()/self.toView.size().height():
# Ende bei rechten Seite
pEnd = QPointF(pM2.x() + self.toView.size().width()/2,
pM2.y() + (self.toView.size().width()/2)*(deltaY/deltaX))
else:
# Ende bei oberer Seite
pEnd = QPointF(pM2.x() - (self.toView.size().height()/2)*(deltaX/deltaY),
pM2.y() - self.toView.size().height()/2)
else:
# links oben
if deltaX/deltaY >= self.fromView.size().width()/self.fromView.size().height():
# Start von linker Seite
pStart = QPointF(pM1.x() - self.fromView.size().width()/2,
pM1.y() - (self.fromView.size().width()/2)*(deltaY/deltaX))
else:
# Start von oberer Seite
pStart = QPointF(pM1.x() - (self.fromView.size().height()/2)*(deltaX/deltaY),
pM1.y() - self.fromView.size().height()/2)
if deltaX/deltaY >= self.toView.size().width()/self.toView.size().height():
# Ende bei rechter Seite
pEnd = QPointF(pM2.x() + self.toView.size().width()/2,
pM2.y() + (self.toView.size().width()/2)*(deltaY/deltaX))
else:
# Ende bei unterer Seite
pEnd = QPointF(pM2.x() + (self.toView.size().height()/2)*(deltaX/deltaY),
pM2.y() + self.toView.size().height()/2)
#pStart = QPointF(self.fromView.x() + self.fromView.size().width(),
# self.fromView.y() + self.fromView.size().height()/2)
#pEnd = QPointF(self.toView.x(), self.toView.y() + self.toView.size().height()/2)
p1 = pStart
p2 = QPointF(pEnd.x()-(pEnd.x()-pStart.x())/7, pEnd.y()-(pEnd.y()-pStart.y())/7)
p3 = QPointF(p2.x()-(p2.y()-p1.y())/20, p2.y()+(p2.x()-p1.x())/20)
p4 = pEnd
p5 = QPointF(p2.x()+(p2.y()-p1.y())/20, p2.y()-(p2.x()-p1.x())/20)
p6 = p2
points.append(p1)
points.append(p2)
points.append(p3)
points.append(p4)
points.append(p5)
points.append(p6)
self.setPolygon(points)
class TracepointWaveScene(QtGui.QGraphicsScene):
'''QGraphicsView for wave'''
def __init__(self, type_, values, duration):
'''CTOR
@param type_: string, must be in supported types
@param values: list of values of variable
@param duration: integer, holds stepwidth of wave
'''
QtGui.QGraphicsScene.__init__(self)
self.supportedTypes = ["bool", "int", "float", "double"]
self.vSpace = 10
self.values = []
self.curPos = QPointF(0, 2)
self.type = type_
self.width = duration
self.valFont = QtGui.QFont("Arial", 7)
self.valFontColor = QtGui.QColor()
self.valFontColor.setGreen(100)
self.setSceneRect(0, 0, self.width, 15)
for v in values:
self.appendValue(v, duration)
def getSupportedTypes(self):
''' Returns supported waveform types
@return list[string]
'''
return self.supportedTypes
def getType(self):
''' @return string identifying type of TracepointWaveScene'''
return self.type
def appendValue(self, value, duration):
''' Append value to wave
@param value: value to add
@param duration: integer, defines duration(length) of value in wave
'''
drawEdge = len(self.values) > 0 and self.values[len(self.values) - 1] != value
if drawEdge:
self.__drawEdge()
self.values.append(value)
self.__drawLine(value, duration, drawEdge or len(self.values) == 1)
self.setSceneRect(0, 0, self.width, 15)
def __drawEdge(self):
''' Draws an edge depending on the type of the waveform. '''
if self.type == "bool":
self.addItem(QtGui.QGraphicsLineItem(QLineF(self.curPos, QPointF(self.curPos.x(), self.curPos.y() + self.vSpace))))
elif self.type in self.supportedTypes:
self.addItem(QtGui.QGraphicsLineItem(QLineF(self.curPos, QPointF(self.curPos.x() + 2, self.curPos.y() + self.vSpace))))
self.addItem(QtGui.QGraphicsLineItem(QLineF(QPointF(self.curPos.x() + 2, self.curPos.y()), QPointF(self.curPos.x(), self.curPos.y() + self.vSpace))))
def __drawLine(self, value, duration, printvalue=True):
''' Draws a line depending on the type of the waveform.
@param value: value to add to wave
@param duration: integer, defines duration(length) of value in wave
@param printvalue: bool, add values to waveform (for value-type waveforms only)
'''
self.width = self.width + duration
tmp = self.curPos
self.curPos = QPointF(self.curPos.x() + duration, self.curPos.y())
if self.type == "bool":
if value:
self.addItem(QtGui.QGraphicsLineItem(QLineF(tmp, self.curPos)))
else:
self.addItem(QtGui.QGraphicsLineItem(tmp.x(), tmp.y() + self.vSpace, self.curPos.x(), self.curPos.y() + self.vSpace))
elif self.type in self.supportedTypes:
if printvalue:
text = QtGui.QGraphicsTextItem(str(value))
text.setFont(self.valFont)
text.setDefaultTextColor(self.valFontColor)
text.setPos(QPointF(tmp.x() + 4, tmp.y() - 5))
self.addItem(text)
self.addItem(QtGui.QGraphicsLineItem(QLineF(tmp, self.curPos)))
self.addItem(QtGui.QGraphicsLineItem(tmp.x(), tmp.y() + self.vSpace, self.curPos.x(), self.curPos.y() + self.vSpace))
def getXover(self, phg, strandtype, fromHelix,\
fromIndex, toHelix, toIndex):
"""
Draws a line from the center of the fromBase (pA) to the
top or bottom of that same base, depending on its direction (qA),
then a quad curve to the top or bottom of the toBase (qB), and
finally to the center of the toBase (pB).
"""
# if we need to speed this up, we could keep track if pA changed?
pA = QPointF(*fromHelix.baseLocation(strandtype,\
fromIndex,\
center=True))
pA = phg.mapFromItem(fromHelix, pA)
pB = QPointF(*toHelix.baseLocation(strandtype,\
toIndex,\
center=True))
pB = phg.mapFromItem(toHelix, pB)
yA = yB = self._baseWidth / 2
if fromHelix.vhelix().directionOfStrandIs5to3(strandtype):
orientA = HandleOrient.LeftUp
yA = -yA
else:
orientA = HandleOrient.RightDown
if toHelix.vhelix().directionOfStrandIs5to3(strandtype):
orientB = HandleOrient.RightUp
yB = -yB
else:
orientB = HandleOrient.LeftDown
# Determine start and end points of quad curve
qA = QPointF(pA.x(), pA.y() + yA)
qB = QPointF(pB.x(), pB.y() + yB)
# Determine control point of quad curve
c1 = QPointF()
# case 1: same strand
if fromHelix.number() == toHelix.number():
if pA.x() < pB.x(): # draw only from left
if orientA == HandleOrient.LeftUp or \
orientA == HandleOrient.RightUp:
dx = abs(pB.x() - pA.x())
c1.setX(0.5 * (pA.x() + pB.x()))
c1.setY(pA.y() - self.yScale * dx)
# end if
# end if
# case 2: same parity
elif fromHelix.evenParity() == toHelix.evenParity():
dy = abs(pB.y() - pA.y())
c1.setX(pA.x() + self.xScale * dy)
c1.setY(0.5 * (pA.y() + pB.y()))
# case 3: default
else:
if orientA == HandleOrient.LeftUp:
c1.setX(pA.x() - self.xScale * abs(pB.y() - pA.y()))
else:
c1.setX(pA.x() + self.xScale * abs(pB.y() - pA.y()))
c1.setY(0.5 * (pA.y() + pB.y()))
# Construct painter path
painterpath = QPainterPath()
painterpath.moveTo(pA)
painterpath.lineTo(qA)
painterpath.quadTo(c1, qB)
painterpath.lineTo(pB)
return painterpath
def mouseReleaseEvent(self, event):
position = QPointF(event.scenePos())
self.clicked.emit((position.x(), position.y()))
def paint(self, painter, _1, _2):
""" Main-Method of the Pointer-Class <br>
calculates/renders/draws the Lines of the Arrow
"""
if self.fromView.collidesWithItem(self.toView):
return
# antialiasing makes things look nicer :)
painter.setRenderHint(QPainter.Antialiasing)
self.toView.x()
pM1 = QPointF(self.fromView.x() + self.fromView.size().width() / 2,
self.fromView.y() + self.fromView.size().height() / 2)
pM2 = QPointF(self.toView.x() + self.toView.size().width() / 2,
self.toView.y() + self.toView.size().height() / 2)
deltaX = pM2.x() - pM1.x()
deltaY = pM2.y() - pM1.y()
if deltaX == 0:
deltaX = 0.01
if deltaY == 0:
deltaY = 0.01
if deltaX >= 0:
if deltaY >= 0:
# rechts unten
if deltaX / deltaY >= self.fromView.size().width(
) / self.fromView.size().height():
# Start von rechter Seite
pStart = QPointF(
pM1.x() + self.fromView.size().width() / 2,
pM1.y() + (self.fromView.size().width() / 2) *
(deltaY / deltaX))
else:
# Start von unterer Seite
pStart = QPointF(
pM1.x() + (self.fromView.size().height() / 2) *
(deltaX / deltaY),
pM1.y() + self.fromView.size().height() / 2)
if deltaX / deltaY >= self.toView.size().width(
) / self.toView.size().height():
# Ende bei linker Seite
pEnd = QPointF(
pM2.x() - self.toView.size().width() / 2,
pM2.y() - (self.toView.size().width() / 2) *
(deltaY / deltaX))
else:
# Ende bei oberer Seite
pEnd = QPointF(
pM2.x() - (self.toView.size().height() / 2) *
(deltaX / deltaY),
pM2.y() - self.toView.size().height() / 2)
else:
# rechts oben
if deltaX / deltaY * -1 >= self.fromView.size().width(
) / self.fromView.size().height():
# Start von rechter Seite
pStart = QPointF(
pM1.x() + self.fromView.size().width() / 2,
pM1.y() + (self.fromView.size().width() / 2) *
(deltaY / deltaX))
else:
# Start von oberer Seite
pStart = QPointF(
pM1.x() - (self.fromView.size().height() / 2) *
(deltaX / deltaY),
pM1.y() - self.fromView.size().height() / 2)
if deltaX / deltaY * -1 >= self.toView.size().width(
) / self.toView.size().height():
# Ende bei linker Seite
pEnd = QPointF(
pM2.x() - self.toView.size().width() / 2,
pM2.y() - (self.toView.size().width() / 2) *
(deltaY / deltaX))
else:
# Ende bei unterer Seite
pEnd = QPointF(
pM2.x() + (self.toView.size().height() / 2) *
(deltaX / deltaY),
pM2.y() + self.toView.size().height() / 2)
else:
if deltaY >= 0:
# links unten
if deltaX / deltaY * -1 >= self.fromView.size().width(
) / self.fromView.size().height():
# Start von linker Seite
pStart = QPointF(
pM1.x() - self.fromView.size().width() / 2,
pM1.y() - (self.fromView.size().width() / 2) *
(deltaY / deltaX))
else:
# Start von unterer Seite
pStart = QPointF(
pM1.x() + (self.fromView.size().height() / 2) *
(deltaX / deltaY),
pM1.y() + self.fromView.size().height() / 2)
if deltaX / deltaY * -1 >= self.toView.size().width(
) / self.toView.size().height():
# Ende bei rechten Seite
pEnd = QPointF(
pM2.x() + self.toView.size().width() / 2,
pM2.y() + (self.toView.size().width() / 2) *
(deltaY / deltaX))
else:
# Ende bei oberer Seite
pEnd = QPointF(
pM2.x() - (self.toView.size().height() / 2) *
(deltaX / deltaY),
pM2.y() - self.toView.size().height() / 2)
else:
# links oben
if deltaX / deltaY >= self.fromView.size().width(
) / self.fromView.size().height():
# Start von linker Seite
pStart = QPointF(
pM1.x() - self.fromView.size().width() / 2,
pM1.y() - (self.fromView.size().width() / 2) *
(deltaY / deltaX))
else:
# Start von oberer Seite
pStart = QPointF(
pM1.x() - (self.fromView.size().height() / 2) *
(deltaX / deltaY),
pM1.y() - self.fromView.size().height() / 2)
if deltaX / deltaY >= self.toView.size().width(
) / self.toView.size().height():
# Ende bei rechter Seite
pEnd = QPointF(
pM2.x() + self.toView.size().width() / 2,
pM2.y() + (self.toView.size().width() / 2) *
(deltaY / deltaX))
else:
# Ende bei unterer Seite
pEnd = QPointF(
pM2.x() + (self.toView.size().height() / 2) *
(deltaX / deltaY),
pM2.y() + self.toView.size().height() / 2)
self.setLine(QLineF(pEnd, pStart))
if self.line().length() != 0:
angle = math.acos(self.line().dx() / self.line().length())
if self.line().dy() >= 0:
angle = math.pi * 2 - angle
arrowP1 = self.line().p1() + QPointF(
math.sin(angle + math.pi / 2.5) * self.arrowSize,
math.cos(angle + math.pi / 2.5) * self.arrowSize)
arrowP2 = self.line().p1() + QPointF(
math.sin(angle + math.pi - math.pi / 2.5) * self.arrowSize,
math.cos(angle + math.pi - math.pi / 2.5) * self.arrowSize)
self.arrowhead.clear()
self.arrowhead.append(self.line().p1())
self.arrowhead.append(arrowP1)
self.arrowhead.append(arrowP2)
painter.setBrush(QBrush(self.bgcolor))
painter.drawLine(self.line())
painter.drawPolygon(self.arrowhead)
def layout(self,
scene,
nodes,
center=None,
padX=None,
padY=None,
direction=None,
animationGroup=None):
"""
Lays out the nodes for this scene based on a block layering algorithm.
:param scene | <XNodeScene>
nodes | [<XNode>, ..]
center | <QPointF> || None
padX | <int> || None
padY | <int> || None
direction | <Qt.Direction>
animationGroup | <QAnimationGroup> || None
:return {<XNode>: <QRectF>, ..} | new rects per affected node
"""
nodes = filter(lambda x: x is not None and x.isVisible(), nodes)
# make sure we have at least 1 node, otherwise, it is already laid out
if not nodes or len(nodes) == 1:
return {}
# calculate the default padding based on the scene
if padX == None:
if direction == Qt.Vertical:
padX = 2 * scene.cellWidth()
else:
padX = 4 * scene.cellWidth()
if padY == None:
if direction == Qt.Vertical:
padY = 4 * scene.cellHeight()
else:
padY = 2 * scene.cellWidth()
# step 1: create a mapping of the connections
connection_map = self.connectionMap(scene, nodes)
# step 2: organize the nodes into layers based on their connection chain
layers = self.generateLayers(scene, nodes, connection_map)
layers = list(reversed(layers))
# step 3: calculate the total dimensions for the layout
bounds = QRectF()
# step 3.1: compare the nodes together that have common connections
layer_widths = []
layer_heights = []
node_heights = {}
node_widths = {}
for layer_index, layer in enumerate(layers):
layer_w = 0
layer_h = 0
layer_node_w = []
layer_node_h = []
self.organizeLayer(layer, connection_map)
for node in layer:
rect = node.rect()
layer_node_w.append(rect.width())
layer_node_h.append(rect.height())
if direction == Qt.Vertical:
layer_w += rect.width()
layer_h = max(rect.height(), layer_h)
else:
layer_w = max(rect.width(), layer_w)
layer_h += rect.height()
# update the bounding area
if direction == Qt.Vertical:
layer_w += padX * 1 - len(layer)
bounds.setWidth(max(layer_w, bounds.width()))
bounds.setHeight(bounds.height() + layer_h)
else:
layer_h += padY * 1 - len(layer)
bounds.setWidth(bounds.width() + layer_w)
bounds.setHeight(max(layer_h, bounds.height()))
node_widths[layer_index] = layer_node_w
node_heights[layer_index] = layer_node_h
layer_widths.append(layer_w)
layer_heights.append(layer_h)
if not center:
center = scene.sceneRect().center()
w = bounds.width()
h = bounds.height()
bounds.setX(center.x() - bounds.width() / 2.0)
bounds.setY(center.y() - bounds.height() / 2.0)
bounds.setWidth(w)
bounds.setHeight(h)
# step 4: assign positions for each node by layer
processed_nodes = {}
layer_grps = [(i, layer) for i, layer in enumerate(layers)]
layer_grps.sort(key=lambda x: len(x[1]))
for layer_index, layer in reversed(layer_grps):
layer_width = layer_widths[layer_index]
layer_height = layer_heights[layer_index]
# determine the starting point for this layer
if direction == Qt.Vertical:
offset = layer_index * padY + sum(layer_heights[:layer_index])
point = QPointF(bounds.x(), offset + bounds.y())
else:
offset = layer_index * padX + sum(layer_widths[:layer_index])
point = QPointF(offset + bounds.x(), bounds.y())
# assign node positions based on existing connections
for node_index, node in enumerate(layer):
max_, min_ = (None, None)
inputs, outputs = connection_map[node]
for connected_node in inputs + outputs:
if not connected_node in processed_nodes:
continue
npos = processed_nodes[connected_node]
nrect = connected_node.rect()
rect = QRectF(npos.x(), npos.y(), nrect.width(),
nrect.height())
if direction == Qt.Vertical:
if min_ is None:
min_ = rect.left()
min_ = min(rect.left(), min_)
max_ = max(rect.right(), max_)
else:
if min_ is None:
min_ = rect.top()
min_ = min(rect.top(), min_)
max_ = max(rect.bottom(), max_)
if direction == Qt.Vertical:
off_x = 0
off_y = (layer_height - node.rect().height()) / 2.0
start_x = (bounds.width() - layer_width)
start_y = 0
else:
off_x = (layer_width - node.rect().width()) / 2.0
off_y = 0
start_x = 0
start_y = (bounds.height() - layer_height)
# align against existing nodes
if not None in (min_, max):
if direction == Qt.Vertical:
off_x = (max_ - min_) / 2.0 - node.rect().width() / 2.0
point_x = min_ + off_x
point_y = point.y() + off_y
else:
off_y = (max_ -
min_) / 2.0 - node.rect().height() / 2.0
point_x = point.x() + off_x
point_y = min_ + off_y
# otherwise, align based on its position in the layer
else:
if direction == Qt.Vertical:
off_x = sum(node_widths[layer_index][:node_index])
off_x += node_index * padX
off_x += start_x
point_x = point.x() + off_x
point_y = point.y() + off_y
else:
off_y = sum(node_heights[layer_index][:node_index])
off_y += node_index * padY
off_y += start_y
point_x = point.x() + off_x
point_y = point.y() + off_y
if not animationGroup:
node.setPos(point_x, point_y)
else:
anim = XNodeAnimation(node, 'setPos')
anim.setStartValue(node.pos())
anim.setEndValue(QPointF(point_x, point_y))
animationGroup.addAnimation(anim)
processed_nodes[node] = QPointF(point_x, point_y)
if self._testing:
QApplication.processEvents()
time.sleep(1)
return processed_nodes
class DataPlot(Qwt.QwtPlot):
mouseCoordinatesChanged = Signal(QPointF)
colors = [Qt.red, Qt.blue, Qt.magenta, Qt.cyan, Qt.green]
dataNumValuesSaved = 1000
dataNumValuesPloted = 1000
def __init__(self, *args):
super(DataPlot, self).__init__(*args)
self.setCanvasBackground(Qt.white)
self.insertLegend(Qwt.QwtLegend(), Qwt.QwtPlot.BottomLegend)
self.curves = {}
self.pauseFlag = False
self.dataOffsetX = 0
self.canvasOffsetX = 0
self.canvasOffsetY = 0
self.lastCanvasX = 0
self.lastCanvasY = 0
self.pressedCanvasY = 0
self.redrawOnEachUpdate = False
self.redrawOnFullUpdate = True
self.redrawTimerInterval = None
self.redrawManually = False
self.oscilloscopeNextDataPosition = 0
self.oscilloscopeMode = False
self.lastClickCoordinates = None
markerAxisY = Qwt.QwtPlotMarker()
markerAxisY.setLabelAlignment(Qt.AlignRight | Qt.AlignTop)
markerAxisY.setLineStyle(Qwt.QwtPlotMarker.HLine)
markerAxisY.setYValue(0.0)
markerAxisY.attach(self)
#self.setAxisTitle(Qwt.QwtPlot.xBottom, "Time")
#self.setAxisTitle(Qwt.QwtPlot.yLeft, "Value")
self.picker = Qwt.QwtPlotPicker(
Qwt.QwtPlot.xBottom, Qwt.QwtPlot.yLeft, Qwt.QwtPicker.PolygonSelection,
Qwt.QwtPlotPicker.PolygonRubberBand, Qwt.QwtPicker.AlwaysOn, self.canvas()
)
self.picker.setRubberBandPen(QPen(self.colors[-1]))
self.picker.setTrackerPen(QPen(self.colors[-1]))
# Initialize data
self.timeAxis = arange(self.dataNumValuesPloted)
self.canvasDisplayHeight = 1000
self.canvasDisplayWidth = self.canvas().width()
self.dataOffsetX = self.dataNumValuesSaved - len(self.timeAxis)
self.redraw()
self.moveCanvas(0, 0)
self.canvas().setMouseTracking(True)
self.canvas().installEventFilter(self)
# init and start redraw timer
self.timerRedraw = QTimer(self)
self.timerRedraw.timeout.connect(self.redraw)
if self.redrawTimerInterval:
self.timerRedraw.start(self.redrawTimerInterval)
def eventFilter(self, _, event):
if event.type() == QEvent.MouseButtonRelease:
x = self.invTransform(Qwt.QwtPlot.xBottom, event.pos().x())
y = self.invTransform(Qwt.QwtPlot.yLeft, event.pos().y())
self.lastClickCoordinates = QPointF(x, y)
elif event.type() == QEvent.MouseMove:
x = self.invTransform(Qwt.QwtPlot.xBottom, event.pos().x())
y = self.invTransform(Qwt.QwtPlot.yLeft, event.pos().y())
coords = QPointF(x, y)
if self.picker.isActive() and self.lastClickCoordinates is not None:
toolTip = 'origin x: %.5f, y: %.5f' % (self.lastClickCoordinates.x(), self.lastClickCoordinates.y())
delta = coords - self.lastClickCoordinates
toolTip += '\ndelta x: %.5f, y: %.5f\nlength: %.5f' % (delta.x(), delta.y(), math.sqrt(delta.x() ** 2 + delta.y() ** 2))
else:
toolTip = 'buttons\nleft: measure\nmiddle: move\nright: zoom x/y\nwheel: zoom y'
self.setToolTip(toolTip)
self.mouseCoordinatesChanged.emit(coords)
return False
def setRedrawInterval(self, interval):
self.redrawTimerInterval = interval
if self.redrawTimerInterval:
self.redrawOnEachUpdate = False
self.redrawOnFullUpdate = False
self.timerRedraw.start(self.redrawTimerInterval)
def resizeEvent(self, event):
super(DataPlot, self).resizeEvent(event)
self.rescale()
def getCurves(self):
return self.curves
def addCurve(self, curveId, curveName):
curveId = str(curveId)
if self.curves.get(curveId):
return
curveObject = Qwt.QwtPlotCurve(curveName)
curveObject.attach(self)
curveObject.setPen(QPen(self.colors[len(self.curves.keys()) % len(self.colors)]))
self.curves[curveId] = {
'name': curveName,
'data': zeros(self.dataNumValuesSaved),
'object': curveObject,
}
def removeCurve(self, curveId):
curveId = str(curveId)
if curveId in self.curves:
self.curves[curveId]['object'].hide()
self.curves[curveId]['object'].attach(None)
del self.curves[curveId]['object']
del self.curves[curveId]
def removeAllCurves(self):
for curveId in self.curves.keys():
self.removeCurve(curveId)
self.clear()
@Slot(str, float)
def updateValue(self, curveId, value):
curveId = str(curveId)
# update data plot
if (not self.pauseFlag) and curveId in self.curves:
if self.oscilloscopeMode:
self.curves[curveId]['data'][self.oscilloscopeNextDataPosition] = float(value)
# only advance the oscilloscopeNextDataPosition for the first curve in the dict
if self.curves.keys()[0] == curveId:
self.oscilloscopeNextDataPosition = (self.oscilloscopeNextDataPosition + 1) % len(self.timeAxis)
else:
self.curves[curveId]['data'] = concatenate((self.curves[curveId]['data'][1:], self.curves[curveId]['data'][:1]), 1)
self.curves[curveId]['data'][-1] = float(value)
if not self.redrawManually:
if self.redrawOnEachUpdate or (self.redrawOnFullUpdate and self.curves.keys()[0] == curveId):
self.redraw()
@Slot(bool)
def togglePause(self, enabled):
self.pauseFlag = enabled
@Slot(bool)
def toggleOscilloscopeMode(self, enabled):
self.oscilloscopeMode = enabled
def hasCurve(self, curveId):
curveId = str(curveId)
return curveId in self.curves
def redraw(self):
for curveId in self.curves.keys():
self.curves[curveId]['object'].setData(self.timeAxis, self.curves[curveId]['data'][self.dataOffsetX : self.dataOffsetX + len(self.timeAxis)])
#self.curves[curveId]['object'].setStyle(Qwt.QwtPlotCurve.CurveStyle(3))
self.replot()
def rescale(self):
yNumTicks = self.height() / 40
yLowerLimit = self.canvasOffsetY - (self.canvasDisplayHeight / 2)
yUpperLimit = self.canvasOffsetY + (self.canvasDisplayHeight / 2)
# calculate a fitting step size for nice, round tick labels, depending on the displayed value area
yDelta = yUpperLimit - yLowerLimit
exponent = int(math.log10(yDelta))
presicion = -(exponent - 2)
yStepSize = round(yDelta / yNumTicks, presicion)
self.setAxisScale(Qwt.QwtPlot.yLeft, yLowerLimit, yUpperLimit, yStepSize)
self.setAxisScale(Qwt.QwtPlot.xBottom, 0, len(self.timeAxis))
self.redraw()
def rescaleAxisX(self, deltaX):
newLen = len(self.timeAxis) + deltaX
newLen = max(10, min(newLen, self.dataNumValuesSaved))
self.timeAxis = arange(newLen)
self.dataOffsetX = max(0, min(self.dataOffsetX, self.dataNumValuesSaved - len(self.timeAxis)))
self.rescale()
def scaleAxisY(self, maxValue):
self.canvasDisplayHeight = maxValue
self.rescale()
def moveCanvas(self, deltaX, deltaY):
self.dataOffsetX += deltaX * len(self.timeAxis) / float(self.canvas().width())
self.dataOffsetX = max(0, min(self.dataOffsetX, self.dataNumValuesSaved - len(self.timeAxis)))
self.canvasOffsetX += deltaX * self.canvasDisplayWidth / self.canvas().width()
self.canvasOffsetY += deltaY * self.canvasDisplayHeight / self.canvas().height()
self.rescale()
def mousePressEvent(self, event):
self.lastCanvasX = event.x() - self.canvas().x()
self.lastCanvasY = event.y() - self.canvas().y()
self.pressedCanvasY = event.y() - self.canvas().y()
def mouseMoveEvent(self, event):
canvasX = event.x() - self.canvas().x()
canvasY = event.y() - self.canvas().y()
if event.buttons() & Qt.MiddleButton: # middle button moves the canvas
deltaX = self.lastCanvasX - canvasX
deltaY = canvasY - self.lastCanvasY
self.moveCanvas(deltaX, deltaY)
elif event.buttons() & Qt.RightButton: # right button zooms
zoomFactor = max(-0.6, min(0.6, (self.lastCanvasY - canvasY) / 20.0 / 2.0))
deltaY = (self.canvas().height() / 2.0) - self.pressedCanvasY
self.moveCanvas(0, zoomFactor * deltaY * 1.0225)
self.scaleAxisY(max(0.005, self.canvasDisplayHeight - (zoomFactor * self.canvasDisplayHeight)))
self.rescaleAxisX(self.lastCanvasX - canvasX)
self.lastCanvasX = canvasX
self.lastCanvasY = canvasY
def wheelEvent(self, event): # mouse wheel zooms the y-axis
canvasY = event.y() - self.canvas().y()
zoomFactor = max(-0.6, min(0.6, (event.delta() / 120) / 6.0))
deltaY = (self.canvas().height() / 2.0) - canvasY
self.moveCanvas(0, zoomFactor * deltaY * 1.0225)
self.scaleAxisY(max(0.0005, self.canvasDisplayHeight - zoomFactor * self.canvasDisplayHeight))
class ImageView2D(QGraphicsView):
"""
Shows a ImageScene2D to the user and allows for interactive
scrolling, panning, zooming etc. It intercepts all meaningful
events on the widget for further interpretation (e.g. the view
does not know which slicing axis it represents in the 3D slice
viewer setting).
"""
#notifies about the relative change in the slicing position
#that is requested
changeSliceDelta = pyqtSignal(int)
drawing = pyqtSignal(QPointF)
beginDraw = pyqtSignal(QPointF, object)
endDraw = pyqtSignal(QPointF)
erasingToggled = pyqtSignal(bool)
#notifies that the mouse has moved to 2D coordinate x,y
mouseMoved = pyqtSignal(int, int)
#notifies that the user has double clicked on the 2D coordinate x,y
mouseDoubleClicked = pyqtSignal(int, int)
drawUpdateInterval = 300 #ms
@property
def shape(self):
"""
(width, height) of the scene.
Specifying the shape is necessary to allow for correct
scrollbars
"""
return self._shape
@shape.setter
def shape(self, s):
self._shape = s
self.scene().shape = s
self._crossHairCursor.shape = (s[1], s[0])
self._sliceIntersectionMarker.shape = (s[1], s[0])
#FIXME unused?
@property
def name(self):
return self._name
@name.setter
def name(self, n):
self._name = n
@property
def hud(self):
return self._hud
@hud.setter
def hud(self, hud):
"""
Sets up a heads up display at the upper left corner of the view
hud -- a QWidget
"""
self._hud = hud
self.setLayout(QVBoxLayout())
self.layout().setContentsMargins(0,0,0,0)
self.layout().addWidget(self._hud)
self.layout().addStretch()
@property
def drawingEnabled(self):
return self._drawingEnabled
@drawingEnabled.setter
def drawingEnabled(self, enable):
self._drawingEnabled = enable
def __init__(self, imagescene2d, useGL=False):
"""
Constructs a view upon a ImageScene2D
imagescene2d -- a ImgeScene2D instance
useGL -- wether to enable OpenGL rendering
"""
QGraphicsView.__init__(self)
self._useGL = useGL
self.setScene(imagescene2d)
#these attributes are exposed as public properties above
self._shape = None #2D shape of this view's shown image
self._slices = None #number of slices that are stacked
self._name = ''
self._hud = None
self._drawingEnabled = False
self._crossHairCursor = None
self._sliceIntersectionMarker = None
#
# Setup the Viewport for fast painting
#
if self._useGL:
self.openglWidget = QGLWidget(self)
self.setViewport(self.openglWidget)
#we clear the background ourselves
self.viewport().setAutoFillBackground(False)
#QGraphicsView cannot use partial updates when using
#an OpenGL widget as a viewport
#http://doc.qt.nokia.com/qq/qq26-openglcanvas.html
self.setViewportUpdateMode(QGraphicsView.FullViewportUpdate)
else:
#Unfortunately, setting these flags has no effect when
#Cache background is turned on.
#With these flags turned on we could handle the drawing of the
#white background ourselves thus removing the flicker
#when scrolling fast through the slices
#self.viewport().setAttribute(Qt.WA_OpaquePaintEvent)
#self.viewport().setAttribute(Qt.WA_NoSystemBackground)
#self.viewport().setAttribute(Qt.WA_PaintOnScreen)
#self.viewport().setAutoFillBackground(False)
self.setViewportUpdateMode(QGraphicsView.MinimalViewportUpdate)
#as rescaling images is slow if done in software,
#we use Qt's built-in background caching mode so that the cached
#image need only be blitted on the screen when we only move
#the cursor
self.setCacheMode(QGraphicsView.CacheBackground)
self.setRenderHint(QPainter.Antialiasing, False)
#Intitialize the scene
if self._useGL:
self.scene().activateOpenGL( self.openglWidget )
self._crossHairCursor = CrossHairCursor(self.scene())
self._crossHairCursor.setZValue(99)
self._sliceIntersectionMarker = SliceIntersectionMarker()
self._sliceIntersectionMarker.setZValue(100)
self.scene().addItem(self._sliceIntersectionMarker)
#FIXME: Use a QAction here so that we do not have to synchronize
#between this initial state and the toggle button's initial state
self._sliceIntersectionMarker.setVisibility(True)
#FIXME: this should be private, but is currently used from
# within the image scene renderer
self.tempImageItems = []
self._isDrawing = False
self._zoomFactor = 1.0
#for panning
self._lastPanPoint = QPoint()
self._dragMode = False
self._deltaPan = QPointF(0,0)
#Unfortunately, setting the style like this make the scroll bars look
#really crappy...
#self.setStyleSheet("QWidget:!focus { border: 2px solid " + self._axisColor[self._axis].name() +"; border-radius: 4px; }\
# QWidget:focus { border: 2px solid white; border-radius: 4px; }")
#FIXME: Is there are more elegant way to handle this?
self.setMouseTracking(True)
self._ticker = QTimer(self)
self._ticker.timeout.connect(self._tickerEvent)
#label updates while drawing, needed for interactive segmentation
self._drawTimer = QTimer(self)
self._drawTimer.timeout.connect(self.notifyDrawing)
# invisible cursor to enable custom cursor
self._hiddenCursor = QCursor(Qt.BlankCursor)
# For screen recording BlankCursor doesn't work
#self.hiddenCursor = QCursor(Qt.ArrowCursor)
self._tempErase = False
def swapAxes(self):
"""
Displays this image as if the x and y axes were swapped.
"""
#FIXME: This is needed for the current arrangements of the three
# 3D slice views. Can this be made more elegant
self.rotate(90.0)
self.scale(1.0,-1.0)
def _cleanUp(self):
self._ticker.stop()
self._drawTimer.stop()
del self._drawTimer
del self._ticker
def viewportRect(self):
"""
Return a QRectF giving the part of the scene currently displayed in this
widget's viewport in the scene's coordinates
"""
return self.mapToScene(self.viewport().geometry()).boundingRect()
def saveSlice(self, filename):
"""Legacy code."""
#print "Saving in ", filename, "slice #", self.sliceNumber, "axis", self._axis
result_image = QImage(self.scene().image.size(), self.scene().image.format())
p = QPainter(result_image)
for patchNr in range(self.patchAccessor.patchCount):
bounds = self.patchAccessor.getPatchBounds(patchNr)
if self.openglWidget is None:
p.drawImage(0, 0, self.scene().image)
else:
p.drawImage(bounds[0], bounds[2], self.imagePatches[patchNr])
p.end()
#horrible way to transpose an image. but it works.
transform = QTransform()
transform.rotate(90)
result_image = result_image.mirrored()
result_image = result_image.transformed(transform)
result_image.save(QString(filename))
def notifyDrawing(self):
print "ImageView2D.notifyDrawing"
#FIXME: resurrect
self.drawing.emit(self.mousePos)
def beginDrawing(self, pos):
self.mousePos = pos
self._isDrawing = True
self.beginDraw.emit(pos, self.shape)
def endDrawing(self, pos):
InteractionLogger.log("%f: endDrawing()" % (time.clock()))
self._drawTimer.stop()
self._isDrawing = False
self.endDraw.emit(pos)
def wheelEvent(self, event):
keys = QApplication.keyboardModifiers()
k_alt = (keys == Qt.AltModifier)
k_ctrl = (keys == Qt.ControlModifier)
self.mousePos = self.mapToScene(event.pos())
grviewCenter = self.mapToScene(self.viewport().rect().center())
if event.delta() > 0:
if k_alt:
self.changeSlice(10)
elif k_ctrl:
scaleFactor = 1.1
self.doScale(scaleFactor)
else:
self.changeSlice(1)
else:
if k_alt:
self.changeSlice(-10)
elif k_ctrl:
scaleFactor = 0.9
self.doScale(scaleFactor)
else:
self.changeSlice(-1)
if k_ctrl:
mousePosAfterScale = self.mapToScene(event.pos())
offset = self.mousePos - mousePosAfterScale
newGrviewCenter = grviewCenter + offset
self.centerOn(newGrviewCenter)
self.mouseMoveEvent(event)
def mousePressEvent(self, event):
if event.button() == Qt.MidButton:
self.setCursor(QCursor(Qt.SizeAllCursor))
self._lastPanPoint = event.pos()
self._crossHairCursor.setVisible(False)
self._dragMode = True
if self._ticker.isActive():
self._deltaPan = QPointF(0, 0)
if event.buttons() == Qt.RightButton:
#make sure that we have the cursor at the correct position
#before we call the context menu
self.mouseMoveEvent(event)
self.customContextMenuRequested.emit(event.pos())
return
if not self.drawingEnabled:
print "ImageView2D.mousePressEvent: drawing is not enabled"
return
if event.buttons() == Qt.LeftButton:
#don't draw if flicker the view
if self._ticker.isActive():
return
if QApplication.keyboardModifiers() == Qt.ShiftModifier:
self.erasingToggled.emit(True)
self._tempErase = True
mousePos = self.mapToScene(event.pos())
self.beginDrawing(mousePos)
def mouseMoveEvent(self,event):
if self._dragMode == True:
#the mouse was moved because the user wants to change
#the viewport
self._deltaPan = QPointF(event.pos() - self._lastPanPoint)
self._panning()
self._lastPanPoint = event.pos()
return
if self._ticker.isActive():
#the view is still scrolling
#do nothing until it comes to a complete stop
return
self.mousePos = mousePos = self.mapToScene(event.pos())
x = self.x = mousePos.x()
y = self.y = mousePos.y()
self.mouseMoved.emit(x,y)
if self._isDrawing:
self.drawing.emit(mousePos)
def mouseReleaseEvent(self, event):
if event.button() == Qt.MidButton:
self.setCursor(QCursor())
releasePoint = event.pos()
self._lastPanPoint = releasePoint
self._dragMode = False
self._ticker.start(20)
if self._isDrawing:
mousePos = self.mapToScene(event.pos())
self.endDrawing(mousePos)
if self._tempErase:
self.erasingToggled.emit(False)
self._tempErase = False
def _panning(self):
hBar = self.horizontalScrollBar()
vBar = self.verticalScrollBar()
vBar.setValue(vBar.value() - self._deltaPan.y())
if self.isRightToLeft():
hBar.setValue(hBar.value() + self._deltaPan.x())
else:
hBar.setValue(hBar.value() - self._deltaPan.x())
def _deaccelerate(self, speed, a=1, maxVal=64):
x = self._qBound(-maxVal, speed.x(), maxVal)
y = self._qBound(-maxVal, speed.y(), maxVal)
ax ,ay = self._setdeaccelerateAxAy(speed.x(), speed.y(), a)
if x > 0:
x = max(0.0, x - a*ax)
elif x < 0:
x = min(0.0, x + a*ax)
if y > 0:
y = max(0.0, y - a*ay)
elif y < 0:
y = min(0.0, y + a*ay)
return QPointF(x, y)
def _qBound(self, minVal, current, maxVal):
"""PyQt4 does not wrap the qBound function from Qt's global namespace
This is equivalent."""
return max(min(current, maxVal), minVal)
def _setdeaccelerateAxAy(self, x, y, a):
x = abs(x)
y = abs(y)
if x > y:
if y > 0:
ax = int(x / y)
if ax != 0:
return ax, 1
else:
return x/a, 1
if y > x:
if x > 0:
ay = int(y/x)
if ay != 0:
return 1, ay
else:
return 1, y/a
return 1, 1
def _tickerEvent(self):
if self._deltaPan.x() == 0.0 and self._deltaPan.y() == 0.0 or self._dragMode == True:
self._ticker.stop()
else:
self._deltaPan = self._deaccelerate(self._deltaPan)
self._panning()
def mouseDoubleClickEvent(self, event):
mousePos = self.mapToScene(event.pos())
self.mouseDoubleClicked.emit(mousePos.x(), mousePos.y())
def changeSlice(self, delta):
if self._isDrawing:
self.endDrawing(self.mousePos)
self._isDrawing = True
#FIXME:
#self._drawManager.beginDrawing(self.mousePos, self.self.shape2D)
self.changeSliceDelta.emit(delta)
#FIXME resurrect
#InteractionLogger.log("%f: changeSliceDelta(axis, num) %d, %d" % (time.clock(), self._axis, delta))
def zoomOut(self):
self.doScale(0.9)
def zoomIn(self):
self.doScale(1.1)
def changeViewPort(self,qRectf):
self.fitInView(qRectf,mode = Qt.KeepAspectRatio)
def doScale(self, factor):
self._zoomFactor = self._zoomFactor * factor
InteractionLogger.log("%f: zoomFactor(factor) %f" % (time.clock(), self._zoomFactor))
self.scale(factor, factor)
def save(self, filename):
growth_num = Result.growth_num
fdata = StringIO()
invert_pts, invert_cells = self.data.save(f=fdata)
f = open(filename, 'w')
w = csv.writer(f, delimiter=',')
w.writerow(["TRKR_VERSION", Result.CURRENT_VERSION])
w.writerow(["Growth computation parameters"])
hf = self.header_fields
for h in self.header_order:
w.writerow([h] + hf[h][0](self))
w.writerow([])
w.writerow(["Growth per image"])
w.writerow(Result.fields)
wall_shift = self.fields_num["wall"] - 1
for img_id in range(len(self.images)):
img = self.images[img_id]
w.writerow([img])
cells = self.cells[img_id]
cells_area = self.cells_area[img_id]
walls = self.walls[img_id]
data = self.data[img]
cells_shape = data.cells
rows = []
for c in sorted(cells.keys()):
# Get the center of mass of the cell
cell = [data[p] for p in cells_shape[c] if p in data]
center = QPointF(0, 0)
area = 0.0
u1 = cell[-1]
for i in range(len(cell)):
u2 = cell[i]
loc_area = u1.x() * u2.y() - u1.y() * u2.x()
center += (u1 + u2) * loc_area
area += loc_area
u1 = u2
center /= area
row = [
"",
"Cell %d" % invert_cells[c], cells_area[c],
cells[c][growth_num["kmax"]], cells[c][growth_num["kmin"]],
cells[c][growth_num["theta"]] * 180 / pi,
cells[c][growth_num["phi"]],
center.x(),
center.y()
]
rows.append(row)
lr = len(rows)
for i, ws in enumerate(sorted(walls.keys())):
wll = [
"",
"Wall %d-%d" % (invert_pts[ws[0]], invert_pts[ws[1]]),
walls[ws]
]
if i >= lr:
rows.append([""] * wall_shift)
rows[i] += wll
w.writerows(rows)
w.writerow(["Actual cell shapes"])
w.writerow(["Image", "Cell", "Begin/End", "Shape [x y]"])
for img_id in range(len(self.images)):
img = self.images[img_id]
w.writerow([img])
cells_shapes = self.cells_shapes[img_id]
rows = []
for c in sorted(cells_shapes.keys()):
sh = cells_shapes[c]
row1 = ["", "Cell %d" % invert_cells[c], "Begin"] + list(
sh[0].flatten())
row2 = ["", "Cell %d" % invert_cells[c], "End"] + list(
sh[1].flatten())
rows.append(row1)
rows.append(row2)
w.writerows(rows)
w.writerow([])
w.writerow(["Data"])
f.write(fdata.getvalue())
f.close()
fdata.close()
def paint(self, painter, option, widget):
if not self.source or not self.dest:
return
# Draw the line itself.
line = QLineF(self.sourcePoint, self.destPoint)
if line.length() == 0.0:
return
palette = QPalette()
self.setZValue(self.state)
if self.state == 3:
pen = QPen(Qt.red, 2, Qt.SolidLine, Qt.RoundCap, Qt.RoundJoin)
if self.state == 2:
pen = QPen(Qt.red, 2, Qt.DashLine, Qt.RoundCap, Qt.RoundJoin)
elif self.state == 1:
pen = QPen(palette.color(QPalette.Disabled, QPalette.WindowText),
0, Qt.SolidLine, Qt.RoundCap, Qt.RoundJoin)
elif self.state == 0:
pen = QPen()
pen.setBrush(QBrush(Qt.NoBrush))
painter.setPen(pen)
painter.drawLine(line)
angle = math.acos(line.dx() / line.length())
if line.dy() >= 0:
angle = Edge.TwoPi - angle
# draw arrowheads
if self.state == 2 or self.state == 3:
# Draw the arrows if there's enough room.
sourceArrowP1 = self.sourcePoint + QPointF(
math.sin(angle + Edge.Pi / 3) * self.arrowSize,
math.cos(angle + Edge.Pi / 3) * self.arrowSize)
sourceArrowP2 = self.sourcePoint + QPointF(
math.sin(angle + Edge.Pi - Edge.Pi / 3) * self.arrowSize,
math.cos(angle + Edge.Pi - Edge.Pi / 3) * self.arrowSize)
destArrowP1 = self.destPoint + QPointF(
math.sin(angle - Edge.Pi / 3) * self.arrowSize,
math.cos(angle - Edge.Pi / 3) * self.arrowSize)
destArrowP2 = self.destPoint + QPointF(
math.sin(angle - Edge.Pi + Edge.Pi / 3) * self.arrowSize,
math.cos(angle - Edge.Pi + Edge.Pi / 3) * self.arrowSize)
painter.setPen(
QPen(Qt.red, 2, Qt.SolidLine, Qt.RoundCap, Qt.RoundJoin))
painter.setBrush(QBrush(Qt.red, Qt.SolidPattern))
painter.drawPolygon(
QPolygonF([line.p1(), sourceArrowP1, sourceArrowP2]))
#painter.drawPolygon(QPolygonF([line.p2(), destArrowP1, destArrowP2]))
if self.state > 0 and self.source > self.dest:
point = QPointF((self.sourcePoint.x() + self.destPoint.x()) / 2,
(self.sourcePoint.y() + self.destPoint.y()) / 2)
point = QPointF(point.x() + math.sin(angle) * 16,
point.y() + math.cos(angle) * 16)
painter.drawText(point, self.text)
def save(self, filename):
growth_num = Result.growth_num
fdata = StringIO()
invert_pts, invert_cells = self.data.save(f=fdata)
f = open(filename, 'w')
w = csv.writer(f, delimiter=',')
w.writerow(["TRKR_VERSION", Result.CURRENT_VERSION])
w.writerow(["Growth computation parameters"])
hf = self.header_fields
for h in self.header_order:
w.writerow([h] + hf[h][0](self))
w.writerow([])
w.writerow(["Growth per image"])
w.writerow(Result.fields)
wall_shift = self.fields_num["wall"]-1
for img_id in range(len(self.images)):
img = self.images[img_id]
w.writerow([img])
cells = self.cells[img_id]
cells_area = self.cells_area[img_id]
walls = self.walls[img_id]
data = self.data[img]
cells_shape = data.cells
rows = []
for c in sorted(cells.keys()):
# Get the center of mass of the cell
cell = [data[p] for p in cells_shape[c] if p in data]
center = QPointF(0, 0)
area = 0.0
u1 = cell[-1]
for i in range(len(cell)):
u2 = cell[i]
loc_area = u1.x() * u2.y() - u1.y() * u2.x()
center += (u1 + u2)*loc_area
area += loc_area
u1 = u2
center /= area
row = ["", "Cell %d" % invert_cells[c], cells_area[c], cells[c][growth_num["kmax"]],
cells[c][growth_num["kmin"]], cells[c][growth_num["theta"]] * 180 / pi,
cells[c][growth_num["phi"]], center.x(), center.y()]
rows.append(row)
lr = len(rows)
for i, ws in enumerate(sorted(walls.keys())):
wll = ["", "Wall %d-%d" % (invert_pts[ws[0]], invert_pts[ws[1]]), walls[ws]]
if i >= lr:
rows.append([""] * wall_shift)
rows[i] += wll
w.writerows(rows)
w.writerow(["Actual cell shapes"])
w.writerow(["Image", "Cell", "Begin/End", "Shape [x y]"])
for img_id in range(len(self.images)):
img = self.images[img_id]
w.writerow([img])
cells_shapes = self.cells_shapes[img_id]
rows = []
for c in sorted(cells_shapes.keys()):
sh = cells_shapes[c]
row1 = ["", "Cell %d" % invert_cells[c], "Begin"] + list(sh[0].flatten())
row2 = ["", "Cell %d" % invert_cells[c], "End"] + list(sh[1].flatten())
rows.append(row1)
rows.append(row2)
w.writerows(rows)
w.writerow([])
w.writerow(["Data"])
f.write(fdata.getvalue())
f.close()
fdata.close()
def __select(self, pos, bhighlight=True, select_type=None):
"""
Select an object based on computed distance.
The x and y values are normalized first to ensure the same units for distance in x and y coordinates.
The x axis is in samples while the y axis is in BPM.
:param pos:
:param bhighlight:
:param select_type: Select specific type of curve (annotation)
:type pos: QPointF
:type select_type: str
:return:
"""
# found, distance, point = None, 100, -1
debug = False
if debug:
print 'SELECT'
dmax = self._distance
found_curve = None
found_point = None
point_dist = np.infty
line_dist = np.infty
note_dist = np.infty
ellipse_dist = np.infty
caliper_dist = np.infty
point_i = -1
bellipse = False
bcaliper = False
# the normalization have to be adjusted to aspect ratio of the plot
size = self.__plot.size_plot_area()
r_adjust = size.width() / float(size.height())
xmin = self.__plot.viewXMinSample()
xmax = self.__plot.viewXMaxSample()
rx = (xmax - xmin) / r_adjust
# print xmin, xmax, (xmax - xmin)
ymin = self.__plot.viewYMinSample()
ymax = self.__plot.viewYMaxSample()
ry = abs(ymax - ymin)
# print ymin, ymax, (ymax - ymin)
# normalize, aby mely x a y stejne jednotky (puvodne x je ve vzorcich a y v bpm)
pos_clicked = pos
pos = QPointF((pos.x() - xmin) / rx, (pos.y() - ymin) / ry)
# pos = QPointF((pos.x() - xmin), (pos.y() - ymin) )
self.__unselect()
# create local copy and add caliper (if visible)
d_ann = self.__plot.ann_get().copy()
if self.__plot.caliper_is_visible():
d_ann[self.__plot.caliper.id] = self.__plot.caliper
for key, curve in d_ann.iteritems():
t = curve.get_curve_type()
if select_type is not None:
if t != select_type:
continue
x_from = (curve.x_from - xmin) / rx
x_to = (curve.x_to - xmin) / rx
y1 = y2 = None
if curve.yval1 is not None:
y1 = (curve.yval1 - ymin) / ry
if curve.yval2 is not None:
y2 = (curve.yval2 - ymin) / ry
# x_from = curve.x_from - xmin
# x_to = curve.x_to - xmin
# y1 = curve.yval1 - ymin
# y2 = curve.yval2 - ymin
# print rx, ry
# print pos, x_from, x_to, y1, y2
# if debug:
# print 'normalize x a y:', x_from, x_to, y1, y2
if t == EnumAnnType.basal:
line_dist = abs(pos.y() - y1)
if debug:
print 'basal (line dist):', line_dist
elif t == EnumAnnType.baseline or t == EnumAnnType.recovery or t == EnumAnnType.no_recovery or \
t == EnumAnnType.excessive_ua or t == EnumAnnType.acceleration or t == EnumAnnType.deceleration or \
t == EnumAnnType.uterine_contraction:
d0 = abs(x_from - pos.x())
d1 = abs(x_to - pos.x())
# print d0, d1
if d0 < d1:
point_i = 0
point_dist = d0
else:
point_i = 1
point_dist = d1
line_dist = abs(pos.y() - y1)
if debug:
print 'baseline etc (d0,d1,line dist):', d0, d1, line_dist
elif t == EnumAnnType.ellipsenote:
d = compute_dist_ellipse(x_from, x_to, y1, y2, pos)
ellipse_dist = min(d)
point_i = d.index(ellipse_dist)
point_i = -1 if point_i == 0 else point_i
bx = x_from <= pos.x() <= x_to
by = y1 <= pos.y() <= y2
bellipse = bx and by
if debug:
print 'ellipse etc (ellipse_dist, bellipse):', ellipse_dist, bellipse
elif t == EnumAnnType.note or t == EnumAnnType.evaluation_note:
note_dist = abs(pos.x() - x_from)
if debug:
print 'note etc (note_dist):', note_dist
elif isinstance(curve, PyQwtPlotFloatingBaseline):
baseline_x, baseline_y = curve.get_points()
# potrebuji normalizovat
baseline_x = [(t - xmin) / rx for t in baseline_x]
baseline_y = [(t - ymin) / ry for t in baseline_y]
d = [distance_to_point(pos, x, y) for x, y in zip(baseline_x, baseline_y)]
point_dist = min(d)
point_i = d.index(point_dist)
line_dist = point_dist
if debug:
print 'floating baseline (distances, point , dist):', d, point_i, point_dist
elif isinstance(curve, Caliper):
d = compute_dist_caliper(x_from, x_to, y1, y2, pos)
caliper_dist = min(d)
point_i = d.index(caliper_dist)
point_i = -1 if point_i == 0 else point_i
bx = x_from <= pos.x() <= x_to
by = y1 <= pos.y() <= y2
bcaliper = bx and by
# if clicked inside box and all distances are small
if debug:
print 'caliper etc (caliper_dist, point_i, bcaliper, d):', caliper_dist, point_i, bcaliper, d
else:
continue
# return 0
if point_dist < dmax and line_dist < dmax:
# if a point/line is close
found_curve = curve
found_point = point_i
dmax = min(point_dist, line_dist)
elif line_dist <= dmax and x_from < pos.x() < x_to:
# if a line is close
found_curve = curve
found_point = -1
dmax = line_dist
elif note_dist < dmax:
# if a note is close
found_curve = curve
found_point = -1
dmax = note_dist
elif ellipse_dist < dmax:
# if an ellipse is close
found_curve = curve
found_point = point_i
dmax = ellipse_dist
elif caliper_dist < dmax:
found_curve = curve
found_point = point_i
dmax = caliper_dist
elif bellipse and found_curve is None: # if not another curve has been selected
found_curve = curve
found_point = -1
elif bcaliper and found_curve is None: # if not another curve has been selected
found_curve = curve
found_point = -1
if found_curve is not None:
self.__selected_curve = found_curve
self.__selected_point = found_point
self.__highlight(bhighlight)
self.__point_clicked = pos_clicked
return True
return False
class EEdge(QGraphicsObject):
def __init__(self, head, tail, uuid):
QGraphicsObject.__init__(self)
if not issubclass(head.__class__, dict) and not isinstance(tail.__class__, dict):
raise AttributeError
self.setZValue(0.0)
self.__kId = uuid
self.__head = head
self.__tail = tail
if head[ENode.kGuiAttributeType].match(EAttribute.kTypeInput):
self.__head = tail
self.__tail = head
self.__head[ENode.kGuiAttributeParent].onMove.connect(self.update)
self.__tail[ENode.kGuiAttributeParent].onMove.connect(self.update)
self.__headPoint = QPointF(0.0, 0.0)
self.__tailPoint = QPointF(0.0, 0.0)
self.__pen = QPen(QColor(43, 43, 43), 2, Qt.SolidLine)
self.update()
@property
def Id(self):
return self.__kId
@property
def Head(self):
return self.__head
@property
def Tail(self):
return self.__tail
def pen(self):
return self.__pen
def setPen(self, pen):
if not isinstance(pen, QPen):
raise AttributeError
self.__pen = pen
def update(self):
QGraphicsObject.prepareGeometryChange(self)
self.__headPoint = self.mapFromItem(self.__head[ENode.kGuiAttributeParent],
self.__head[ENode.kGuiAttributePlug])
self.__tailPoint = self.mapFromItem(self.__tail[ENode.kGuiAttributeParent],
self.__tail[ENode.kGuiAttributePlug])
self.__headOffsetLine = QLineF(self.__headPoint, QPointF(self.__headPoint.x() + 15, self.__headPoint.y()))
self.__tailOffsetLine = QLineF(self.__tailPoint, QPointF(self.__tailPoint.x() - 15, self.__tailPoint.y()))
line = QLineF(self.__headPoint, self.__tailPoint)
self.__line = line
def boundingRect(self):
extra = (self.pen().width() * 64) / 2
return QRectF(self.__line.p1(),
QSizeF(self.__line.p2().x() - self.__line.p1().x(),
self.__line.p2().y() - self.__line.p1().y())).normalized().adjusted(-extra,
-extra,
extra,
extra)
def shape(self):
return QGraphicsObject.shape(self)
def drawPath(self, startPoint, endPoint):
path = QPainterPath()
one = (QPointF(endPoint.x(), startPoint.y()) + startPoint) / 2
two = (QPointF(startPoint.x(), endPoint.y()) + endPoint) / 2
path.moveTo(startPoint)
angle = math.pi / 2
bLine1 = QLineF()
bLine1.setP1(startPoint)
if startPoint.x() > endPoint.x():
dist = startPoint.x() - endPoint.x()
one = (bLine1.p1() + QPointF(math.sin(angle) * dist, math.cos(angle) * dist))
bLine1.setP1(endPoint)
two = (bLine1.p1() + QPointF(math.sin(angle) * dist, math.cos(angle) * dist))
path.cubicTo(one, two, endPoint)
return path, QLineF(one, two)
def paint(self, painter, option, widget=None):
painter.setPen(self.pen())
headCenter = self.mapFromItem(self.__head[ENode.kGuiAttributeParent],
self.__head[ENode.kGuiAttributeParent].boundingRect().center())
tailCenter = self.mapFromItem(self.__tail[ENode.kGuiAttributeParent],
self.__tail[ENode.kGuiAttributeParent].boundingRect().center())
centerPoint = QLineF(headCenter, tailCenter).pointAt(0.5)
centerPoint.setX(self.__headOffsetLine.p2().x())
lineFromHead = QLineF(self.__headOffsetLine.p2(), centerPoint)
centerPoint.setX(self.__tailOffsetLine.p2().x())
lineFromTail = QLineF(self.__tailOffsetLine.p2(), centerPoint)
painter.drawPath(self.drawPath(self.__headOffsetLine.p1(), self.__tailOffsetLine.p1())[0])
class XNodeConnection( QGraphicsPathItem ):
"""
Defines the base graphics item class that is used to draw a connection
between two nodes.
"""
def __init__( self, scene ):
self._visible = True
super(XNodeConnection, self).__init__()
# define custom properties
self._textItem = None
self._polygons = []
self._style = XConnectionStyle.Linear
self._padding = 20
self._squashThreshold = 2 * scene.cellWidth()
self._showDirectionArrow = False
self._highlightPen = QPen(QColor('yellow'))
self._disabledPen = QPen(QColor(100, 100, 100))
self._disableWithLayer = False
self._enabled = True
self._dirty = True
self._customData = {}
self._layer = None
self._font = QApplication.instance().font()
self._text = ''
self._inputNode = None
self._inputFixedY = None
self._inputFixedX = None
self._inputPoint = QPointF()
self._inputLocation = XConnectionLocation.Left
self._autoCalculateInputLocation = False
self._showInputArrow = False
self._outputNode = None
self._outputFixedX = None
self._outputFixedY = None
self._outputPoint = QPointF()
self._outputLocation = XConnectionLocation.Right
self._autoCalculateOutputLocation = False
self._showOutputArrow = False
# set standard properties
self.setFlags( self.ItemIsSelectable )
self.setZValue(-1)
self.setPen( QColor('white') )
self.setLayer( scene.currentLayer() )
def autoCalculateInputLocation( self ):
"""
:remarks Returns whether or not to auto calculate the input
location based on the proximity to the output node
or point.
:return <bool>
"""
return self._autoCalculateInputLocation
def autoCalculateOutputLocation( self ):
"""
:remarks Returns whether or not to auto calculate the input
location based on the proximity to the output node
or point.
:return <bool>
"""
return self._autoCalculateOutputLocation
def connectSignals( self, node ):
"""
:remarks Connects to signals of the inputed node, if the node
is a valid XNode type.
:param node <XNode> || None
:return <bool> success
"""
from projexui.widgets.xnodewidget.xnode import XNode
# make sure we're connecting to a valid node
if ( not isinstance(node, XNode) ):
return False
node.dispatch.geometryChanged.connect( self.setDirty )
node.dispatch.visibilityChanged.connect(self.setDirty)
node.dispatch.removed.connect( self.forceRemove )
return True
def controlPoints( self ):
"""
:remarks Generates the control points for this path
:return <list> [ <tuple> ( <float> x, <float> y), .. ]
"""
# calculate the positions
outputPoint = self.outputPoint()
inputPoint = self.inputPoint()
points = []
x0 = outputPoint.x()
y0 = outputPoint.y()
xN = inputPoint.x()
yN = inputPoint.y()
xC = (x0 + xN) / 2.0
yC = (y0 + yN) / 2.0
points.append((x0, y0))
oloc = self.outputLocation()
iloc = self.inputLocation()
left = XConnectionLocation.Left
right = XConnectionLocation.Right
bot = XConnectionLocation.Bottom
top = XConnectionLocation.Top
# create a right-to-left
if ( (oloc & right) and (iloc & left) ):
if ( xN < (x0 + self.squashThreshold()) ):
points.append((x0+self.padding(), y0))
points.append((x0+self.padding(), yC))
points.append((xN-self.padding(), yC))
points.append((xN-self.padding(), yN))
else:
points.append((xC, y0))
points.append((xC, yN))
# create a left-to-right
elif ( (oloc & left) and (iloc & right) ):
if ( (x0 - self.squashThreshold()) < xN ):
points.append((x0-self.padding(), y0))
points.append((x0-self.padding(), yC))
points.append((xN+self.padding(), yC))
points.append((xN+self.padding(), yN))
else:
points.append((xC, y0))
points.append((xC, yN))
# create a bottom-to-top
elif ( (oloc & bot) and (iloc & top) ):
if ( yN < (y0 + self.squashThreshold()) ):
points.append((x0, y0+self.padding()))
points.append((xC, y0+self.padding()))
points.append((xC, yN-self.padding()))
points.append((xN, yN-self.padding()))
else:
points.append((x0, yC))
points.append((xN, yC))
# create a top-to-bottom
elif ( (oloc & top) and (iloc & bot) ):
if ( (y0 - self.squashThreshold()) < yN ):
points.append((x0, y0-self.padding()))
points.append((xC, y0-self.padding()))
points.append((xC, yN+self.padding()))
points.append((xN, yN+self.padding()))
else:
points.append((x0, yC))
points.append((xN, yC))
# create a left-to-left
elif ( (oloc & left) and (iloc & left) ):
xMin = min(x0-self.padding(), xN-self.padding())
points.append((xMin, y0))
points.append((xMin, yN))
# create a right-to-right
elif ( (oloc & right) and (iloc & right) ):
xMax = max(x0+self.padding(), xN+self.padding())
points.append((xMax, y0))
points.append((xMax, yN))
# create a bottom-to-bottom
elif ( (oloc & top) and (iloc & top) ):
yMin = min(y0-self.padding(), yN-self.padding())
points.append((x0, yMin))
points.append((xN, yMin))
# create a bottom-to-bottom
elif ( (oloc & bot) and (iloc & bot) ):
yMax = max(y0+self.padding(), yN+self.padding())
points.append((x0, yMax))
points.append((xN, yMax))
# create a bottom-to-left or left-to-bottom
elif ( ((oloc & bot) and (iloc & left)) or
((oloc & left) and (iloc & bot)) ):
points.append((x0, yN))
# create a bottom-to-right or right-to-bottom
elif ( ((oloc & bot) and (iloc & right)) or
((oloc & right) and (iloc & bot)) ):
points.append((x0, y0))
# create a top-to-left or left-to-top
elif ( ((oloc & top) and (iloc & left)) or
((oloc & left) and (iloc & top)) ):
points.append((xN, yN))
# create a top-to-right or right-to-top
elif ( ((oloc & top) and (iloc & right)) or
((oloc & right) and (iloc & top)) ):
points.append((xN, y0))
points.append((xN, yN))
return points
def customData( self, key, default = None ):
"""
Returns custom defined data that can be tracked per connection.
:param key <str>
:param default <variant>
:return <variant>
"""
return self._customData.get(str(key), default)
def direction( self ):
"""
Returns the output-to-input direction as a tuple of the output \
and input locations.
:return (<XConnectionLocation> output, <XConnectionLocation> input)
"""
return (self.outputLocation(), self.inputLocation())
def disabledPen( self ):
"""
Returns the pen that should be used when rendering a disabled \
connection.
:return <QPen>
"""
return self._disabledPen
def disableWithLayer( self ):
"""
Returns whether or not this connection's enabled state should be \
affected by its layer.
:return <bool>
"""
return self._disableWithLayer
def disconnectSignals( self, node ):
"""
Disconnects from signals of the inputed node, if the node is a \
valid XNode type.
:param node <XNode> || None
:return <bool> success
"""
from projexui.widgets.xnodewidget.xnode import XNode
# make sure we're disconnecting from a valid node
if ( not isinstance(node, XNode) ):
return False
node.dispatch.geometryChanged.disconnect( self.setDirty )
node.dispatch.removed.disconnect( self.forceRemove )
return True
def forceRemove( self ):
"""
Removes the object from the scene by queuing it up for removal.
"""
scene = self.scene()
if ( scene ):
scene.forceRemove(self)
def font( self ):
"""
Returns the font for this connection.
:return <QFont>
"""
return self._font
def hasCustomData( self, key ):
"""
Returns whether or not there is the given key in the custom data.
:param key | <str>
:return <bool>
"""
return str(key) in self._customData
def highlightPen( self ):
"""
Return the highlight pen for this connection.
:return <QPen>
"""
return self._highlightPen
def inputLocation( self ):
"""
Returns the input location for this connection.
:return <XConnectionLocation>
"""
if ( not self.autoCalculateInputLocation() ):
return self._inputLocation
# auto calculate directions based on the scene
if ( self._outputNode ):
outputRect = self._outputNode.sceneRect()
else:
y = self._outputPoint.y()
outputRect = QRectF( self._outputPoint.x(), y, 0, 0 )
if ( self._inputNode ):
inputRect = self._inputNode.sceneRect()
else:
y = self._inputPoint.y()
inputRect = QRectF( self._inputPoint.x(), y, 0, 0 )
# use the input location as potential places where it can be
iloc = self._inputLocation
left = XConnectionLocation.Left
right = XConnectionLocation.Right
top = XConnectionLocation.Top
bot = XConnectionLocation.Bottom
if ( self._inputNode == self._outputNode ):
if ( iloc & right ):
return right
elif ( iloc & left ):
return left
elif ( iloc & top ):
return top
else:
return bot
elif ( (iloc & left) and outputRect.right() < inputRect.left() ):
return left
elif ( (iloc & right) and inputRect.right() < outputRect.left() ):
return right
elif ( (iloc & top) and outputRect.bottom() < inputRect.top() ):
return top
elif ( (iloc & bot) ):
return bot
elif ( (iloc & left) ):
return left
elif ( (iloc & right) ):
return right
elif ( (iloc & top) ):
return top
else:
return left
def inputNode( self ):
"""
Returns the input node that is connected to this connection.
:return <XNode>
"""
return self._inputNode
def inputFixedX( self ):
"""
Returns the fixed X value for the input option
:return <float> || None
"""
return self._inputFixedX
def inputFixedY( self ):
"""
Returns the fixed Y value for the input option.
:return <float> || None
"""
return self._inputFixedY
def inputPoint( self ):
"""
Returns a scene space point that the connection \
will draw to as its input target. If the connection \
has a node defined, then it will calculate the input \
point based on the position of the node, factoring in \
preference for input location and fixed information. \
If there is no node connected, then the point defined \
using the setInputPoint method will be used.
:return <QPointF>
"""
node = self.inputNode()
# return the set point
if ( not node ):
return self._inputPoint
# otherwise, calculate the point based on location and fixed info
ilocation = self.inputLocation()
ifixedx = self.inputFixedX()
ifixedy = self.inputFixedY()
return node.positionAt( ilocation, ifixedx, ifixedy )
def isDirection( self, outputLocation, inputLocation ):
"""
Checks to see if the output and input locations match the settings \
for this item.
:param outputLocation | <XConnectionLocation>
:param inputLocation | <XConnectionLocation>
:return <bool>
"""
return (self.isOutputLocation(outputLocation) and
self.isInputLocation(inputLocation))
def isDirty( self ):
"""
Returns whether or not this path object is dirty and needs to \
be rebuilt.
:return <bool>
"""
return self._dirty
def isEnabled( self ):
"""
Returns whether or not this connection is enabled.
:sa disableWithLayer
:return <bool>
"""
if self._disableWithLayer and self._layer:
lenabled = self._layer.isEnabled()
elif self._inputNode and self._outputNode:
lenabled = self._inputNode.isEnabled() and self._outputNode.isEnabled()
else:
lenabled = True
return self._enabled and lenabled
def isInputLocation( self, location ):
"""
Returns whether or not the inputed location value matches the \
given input location.
:param location | <XConnectionLocation>
:return <bool>
"""
return (self.inputLocation() & location) != 0
def isOutputLocation( self, location ):
"""
Returns whether or not the inputed location value matches the \
given output location.
:param location | <XConnectionLocation>
:return <bool>
"""
return (self.outputLocation() & location) != 0
def isStyle( self, style ):
"""
Return whether or not the connection is set to a particular style.
:param style | <XConnectionStyle>
:return <bool>
"""
return (self._style & style) != 0
def isVisible( self ):
"""
Returns whether or not this connection is visible. If either node it is
connected to is hidden, then it should be as well.
:return <bool>
"""
in_node = self.inputNode()
out_node = self.outputNode()
if ( in_node and not in_node.isVisible() ):
return False
if ( out_node and not out_node.isVisible() ):
return False
return self._visible
def layer( self ):
"""
Returns the layer that this node is assigned to.
:return <XNodeLayer> || None
"""
return self._layer
def mappedPolygon( self, polygon, path = None, percent = 0.5 ):
"""
Maps the inputed polygon to the inputed path \
used when drawing items along the path. If no \
specific path is supplied, then this object's own \
path will be used. It will rotate and move the \
polygon according to the inputed percentage.
:param polygon <QPolygonF>
:param path <QPainterPath>
:param percent <float>
:return <QPolygonF> mapped_poly
"""
translatePerc = percent
anglePerc = percent
# we don't want to allow the angle percentage greater than 0.85
# or less than 0.05 or we won't get a good rotation angle
if ( 0.95 <= anglePerc ):
anglePerc = 0.98
elif ( anglePerc <= 0.05 ):
anglePerc = 0.05
if ( not path ):
path = self.path()
if ( not (path and path.length()) ):
return QPolygonF()
# transform the polygon to the path
point = path.pointAtPercent(translatePerc)
angle = path.angleAtPercent(anglePerc)
# rotate about the 0 axis
transform = QTransform().rotate(-angle)
polygon = transform.map(polygon)
# move to the translation point
transform = QTransform().translate(point.x(), point.y())
# create the rotated polygon
mapped_poly = transform.map(polygon)
self._polygons.append(mapped_poly)
return mapped_poly
def mousePressEvent( self, event ):
"""
Overloads the mouse press event to handle special cases and \
bypass when the scene is in view mode.
:param event <QMousePressEvent>
"""
# ignore events when the scene is in view mode
scene = self.scene()
if ( scene and scene.inViewMode() ):
event.ignore()
return
# block the selection signals
if ( scene ):
scene.blockSelectionSignals(True)
# clear the selection
if ( not (self.isSelected() or
event.modifiers() == Qt.ControlModifier) ):
for item in scene.selectedItems():
if ( item != self ):
item.setSelected(False)
# try to start the connection
super(XNodeConnection, self).mousePressEvent(event)
def mouseMoveEvent( self, event ):
"""
Overloads the mouse move event to ignore the event when \
the scene is in view mode.
:param event <QMouseMoveEvent>
"""
# ignore events when the scene is in view mode
scene = self.scene()
if ( scene and (scene.inViewMode() or scene.isConnecting()) ):
event.ignore()
return
# call the base method
super(XNodeConnection, self).mouseMoveEvent(event)
def mouseReleaseEvent( self, event ):
"""
Overloads the mouse release event to ignore the event when the \
scene is in view mode, and release the selection block signal.
:param event <QMouseReleaseEvent>
"""
# ignore events when the scene is in view mode
scene = self.scene()
if ( scene and (scene.inViewMode() or scene.isConnecting()) ):
event.ignore()
return
# emit the scene's connection menu requested signal if
# the button was a right mouse button
if ( event.button() == Qt.RightButton and scene ):
scene.emitConnectionMenuRequested(self)
event.accept()
else:
super(XNodeConnection, self).mouseReleaseEvent(event)
# unblock the selection signals
if ( scene ):
scene.blockSelectionSignals(False)
def opacity( self ):
"""
Returns the opacity amount for this connection.
:return <float>
"""
in_node = self.inputNode()
out_node = self.outputNode()
if ( in_node and out_node and \
(in_node.isIsolateHidden() or out_node.isIsolateHidden()) ):
return 0.1
opacity = super(XNodeConnection, self).opacity()
layer = self.layer()
if ( layer ):
return layer.opacity() * opacity
return opacity
def outputLocation( self ):
"""
Returns the location for the output source position.
:return <XConnectionLocation>
"""
if ( not self.autoCalculateOutputLocation() ):
return self._outputLocation
# auto calculate directions based on the scene
if ( self._outputNode ):
outputRect = self._outputNode.sceneRect()
else:
y = self._outputPoint.y()
outputRect = QRectF( self._outputPoint.x(), y, 0, 0 )
if ( self._inputNode ):
inputRect = self._inputNode.sceneRect()
else:
y = self._inputPoint.y()
inputRect = QRectF( self._inputPoint.x(), y, 0, 0 )
oloc = self._outputLocation
left = XConnectionLocation.Left
right = XConnectionLocation.Right
top = XConnectionLocation.Top
bot = XConnectionLocation.Bottom
if ( self._inputNode == self._outputNode ):
if ( oloc & right ):
return right
elif ( oloc & left ):
return left
elif ( oloc & top ):
return top
else:
return bot
elif ( (oloc & right) and outputRect.right() < inputRect.left() ):
return right
elif ( (oloc & left) and inputRect.right() < outputRect.left() ):
return left
elif ( (oloc & bot) and outputRect.bottom() < inputRect.top() ):
return bot
elif ( (oloc & top) ):
return top
elif ( (oloc & right) ):
return right
elif ( (oloc & left) ):
return left
elif ( (oloc & bot) ):
return bot
else:
return right
def outputNode( self ):
"""
Returns the output source node that this connection is currently \
connected to.
:return <XNode> || None
"""
return self._outputNode
def outputFixedX( self ):
"""
Returns the fixed X position for the output component of this \
connection.
:return <float> || None
"""
return self._outputFixedX
def outputFixedY( self ):
"""
Returns the fixed Y position for the output component of this \
connection.
:return <float> || None
"""
return self._outputFixedY
def outputPoint( self ):
"""
Returns a scene space point that the connection \
will draw to as its output source. If the connection \
has a node defined, then it will calculate the output \
point based on the position of the node, factoring in \
preference for output location and fixed positions. If \
there is no node connected, then the point defined using \
the setOutputPoint method will be used.
:return <QPointF>
"""
node = self.outputNode()
# return the set point
if ( not node ):
return self._outputPoint
# otherwise, calculate the point based on location and fixed positions
olocation = self.outputLocation()
ofixedx = self.outputFixedX()
ofixedy = self.outputFixedY()
return node.positionAt( olocation, ofixedx, ofixedy )
def padding( self ):
"""
Returns the amount of padding to be used when drawing a connection \
that will be drawn backwards.
:return <float>
"""
return self._padding
def paint( self, painter, option, widget ):
"""
Overloads the paint method from QGraphicsPathItem to \
handle custom drawing of the path using this items \
pens and polygons.
:param painter <QPainter>
:param option <QGraphicsItemStyleOption>
:param widget <QWidget>
"""
# following the arguments required by Qt
# pylint: disable-msg=W0613
painter.setOpacity(self.opacity())
# show the connection selected
if ( not self.isEnabled() ):
pen = QPen(self.disabledPen())
elif ( self.isSelected() ):
pen = QPen(self.highlightPen())
else:
pen = QPen(self.pen())
if ( self._textItem ):
self._textItem.setOpacity(self.opacity())
self._textItem.setDefaultTextColor(pen.color().darker(110))
# rebuild first if necessary
if ( self.isDirty() ):
self.setPath(self.rebuild())
# store the initial hint
hint = painter.renderHints()
painter.setRenderHint( painter.Antialiasing )
pen.setWidthF(1.25)
painter.setPen(pen)
painter.drawPath(self.path())
# redraw the polys to force-fill them
for poly in self._polygons:
if ( not poly.isClosed() ):
continue
painter.setBrush(pen.color())
painter.drawPolygon(poly)
# restore the render hints
painter.setRenderHints(hint)
def prepareToRemove( self ):
"""
Handles any code that needs to run to cleanup the connection \
before it gets removed from the scene.
:return <bool> success
"""
# disconnect the signals from the input and output nodes
for node in (self._outputNode, self._inputNode):
self.disconnectSignals(node)
# clear the pointers to the nodes
self._inputNode = None
self._outputNode = None
return True
def rebuild( self ):
"""
Rebuilds the path for this connection based on the given connection \
style parameters that have been set.
:return <QPainterPath>
"""
# create the path
path = self.rebuildPath()
self._polygons = self.rebuildPolygons(path)
if ( self._textItem ):
point = path.pointAtPercent(0.5)
metrics = QFontMetrics(self._textItem.font())
point.setY(point.y() - metrics.height() / 2.0)
self._textItem.setPos(point)
# create the path for the item
for poly in self._polygons:
path.addPolygon(poly)
# unmark as dirty
self.setDirty(False)
return path
def rebuildPath( self ):
"""
Rebuilds the path for the given style options based on the currently \
set parameters.
:return <QPainterPath>
"""
# rebuild linear style
if ( self.isStyle( XConnectionStyle.Linear ) ):
return self.rebuildLinear()
# rebuild block style
elif ( self.isStyle( XConnectionStyle.Block ) ):
return self.rebuildBlock()
# rebuild smooth style
elif ( self.isStyle( XConnectionStyle.Smooth ) ):
return self.rebuildSmooth()
# otherwise, we have an invalid style, or a style
# defined by a subclass
else:
return QPainterPath()
def rebuildPolygons( self, path ):
"""
Rebuilds the polygons that will be used on this path.
:param path | <QPainterPath>
:return <list> [ <QPolygonF>, .. ]
"""
output = []
# create the input arrow
if ( self.showInputArrow() ):
a = QPointF(-10, -3)
b = QPointF(0, 0)
c = QPointF(-10, 3)
mpoly = self.mappedPolygon(QPolygonF([a, b, c, a]), path, 1.0 )
output.append( mpoly )
# create the direction arrow
if ( self.showDirectionArrow() ):
a = QPointF(-5, -3)
b = QPointF(5, 0)
c = QPointF(-5, 3)
mpoly = self.mappedPolygon(QPolygonF([a, b, c, a]), path, 0.5 )
output.append( mpoly )
# create the output arrow
if ( self.showOutputArrow() ):
a = QPointF(10, -3)
b = QPointF(0, 0)
c = QPointF(10, 3)
mpoly = self.mappedPolygon(QPolygonF([a, b, c, a]), path, 0 )
output.append( mpoly )
return output
def rebuildLinear( self ):
"""
Rebuilds a linear path from the output to input points.
:return <QPainterPath>
"""
points = self.controlPoints()
x0, y0 = points[0]
xN, yN = points[-1]
# create a simple line between the output and
# input points
path = QPainterPath()
path.moveTo(x0, y0)
path.lineTo(xN, yN)
return path
def rebuildBlock( self ):
"""
Rebuilds a blocked path from the output to input points.
:return <QPainterPath>
"""
# collect the control points
points = self.controlPoints()
# create the path
path = QPainterPath()
for i, point in enumerate(points):
if ( not i ):
path.moveTo( point[0], point[1] )
else:
path.lineTo( point[0], point[1] )
return path
def rebuildSmooth( self ):
"""
Rebuilds a smooth path based on the inputed points and set \
parameters for this item.
:return <QPainterPath>
"""
# collect the control points
points = self.controlPoints()
# create the path
path = QPainterPath()
if ( len(points) == 3 ):
x0, y0 = points[0]
x1, y1 = points[1]
xN, yN = points[2]
path.moveTo(x0, y0)
path.quadTo(x1, y1, xN, yN)
elif ( len(points) == 4 ):
x0, y0 = points[0]
x1, y1 = points[1]
x2, y2 = points[2]
xN, yN = points[3]
path.moveTo(x0, y0)
path.cubicTo(x1, y1, x2, y2, xN, yN)
elif ( len(points) == 6 ):
x0, y0 = points[0]
x1, y1 = points[1]
x2, y2 = points[2]
x3, y3 = points[3]
x4, y4 = points[4]
xN, yN = points[5]
xC = (x2+x3) / 2.0
yC = (y2+y3) / 2.0
path.moveTo(x0, y0)
path.cubicTo(x1, y1, x2, y2, xC, yC)
path.cubicTo(x3, y3, x4, y4, xN, yN)
else:
x0, y0 = points[0]
xN, yN = points[-1]
path.moveTo(x0, y0)
path.lineTo(xN, yN)
return path
def refreshVisible( self ):
"""
Refreshes whether or not this node should be visible based on its
current visible state.
"""
super(XNodeConnection, self).setVisible(self.isVisible())
def setAutoCalculateInputLocation( self, state = True ):
"""
Sets whether or not to auto calculate the input location based on \
the proximity to the output node or point.
:param state | <bool>
"""
self._autoCalculateInputLocation = state
self.setDirty()
def setAutoCalculateOutputLocation( self, state = True ):
"""
Sets whether or not to auto calculate the input location based on \
the proximity to the output node or point.
:param state | <bool>
"""
self._autoCalculateOutputLocation = state
self.setDirty()
def setCustomData( self, key, value ):
"""
Stores the inputed value as custom data on this connection for \
the given key.
:param key | <str>
:param value | <variant>
"""
self._customData[str(key)] = value
def setDirection( self, outputLocation, inputLocation ):
"""
Sets the output-to-input direction by setting both the locations \
at the same time.
:param outputLocation | <XConnectionLocation>
:param inputLocation | <XConnectionLocation>
"""
self.setOutputLocation(outputLocation)
self.setInputLocation(inputLocation)
def setDirty( self, state = True ):
"""
Flags the connection as being dirty and needing a rebuild.
:param state | <bool>
"""
self._dirty = state
# set if this connection should be visible
if ( self._inputNode and self._outputNode ):
vis = self._inputNode.isVisible() and self._outputNode.isVisible()
self.setVisible(vis)
def setDisabledPen( self, pen ):
"""
Sets the disabled pen that will be used when rendering a connection \
in a disabled state.
:param pen | <QPen>
"""
self._disabledPen = QPen(pen)
def setDisableWithLayer( self, state ):
"""
Sets whether or not this connection's layer's current state should \
affect its enabled state.
:param state | <bool>
"""
self._disableWithLayer = state
self.setDirty()
def setEnabled( self, state ):
"""
Sets whether or not this connection is enabled or not.
:param state | <bool>
"""
self._enabled = state
def setFont( self, font ):
"""
Sets the font for this connection to the inputed font.
:param font | <QFont>
"""
self._font = font
def setHighlightPen( self, pen ):
"""
Sets the pen to be used when highlighting a selected connection.
:param pen | <QPen> || <QColor>
"""
self._highlightPen = QPen(pen)
def setInputLocation( self, location ):
"""
Sets the input location for where this connection should point to.
:param location | <XConnectionLocation>
"""
self._inputLocation = location
self.setDirty()
def setInputNode( self, node ):
"""
Sets the node that will be recieving this connection as an input.
:param node | <XNode>
"""
# if the node already matches the current input node, ignore
if ( self._inputNode == node ):
return
# disconnect from the existing node
self.disconnectSignals( self._inputNode )
# store the node
self._inputNode = node
# connect to the new node
self.connectSignals( self._inputNode )
# force the rebuilding of the path
self.setPath(self.rebuild())
def setInputFixedX( self, x ):
"""
Sets the fixed x position for the input component of this connection.
:param x | <float> || None
"""
self._inputFixedX = x
self.setDirty()
def setInputFixedY( self, y ):
"""
Sets the fixed y position for the input component of this connection.
:param y | <float> || None
"""
self._inputFixedY = y
self.setDirty()
def setInputPoint( self, point ):
"""
Sets the scene level input point position to draw the connection to. \
This is used mainly by the scene when drawing a user connection - \
it will only be used when there is no connected input node.
:param point | <QPointF>
"""
self._inputPoint = point
self.setPath(self.rebuild())
def setLayer( self, layer ):
"""
Sets the layer that this node is associated with to the given layer.
:param layer | <XNodeLayer> || None
:return <bool> changed
"""
if ( layer == self._layer ):
return False
self._layer = layer
self.syncLayerData()
return True
def setOutputLocation( self, location ):
"""
Sets the location for the output part of the connection to generate \
from.
:param location | <XConnectionLocation>
"""
self._outputLocation = location
self.setDirty()
def setOutputNode( self, node ):
"""
Sets the node that will be generating the output information for \
this connection.
:param node | <XNode>
"""
# if the output node matches the current, ignore
if ( node == self._outputNode ):
return
# disconnect from an existing node
self.disconnectSignals( self._outputNode )
# set the current node
self._outputNode = node
self.connectSignals( self._outputNode )
# force the rebuilding of the path
self.setPath( self.rebuild() )
def setOutputFixedX( self, x ):
"""
Sets the fixed x position for the output component of this connection.
:param x | <float> || None
"""
self._outputFixedX = x
self.setDirty()
def setOutputFixedY( self, y ):
"""
Sets the fixed y position for the output component of this connection.
:param y | <float> || None
"""
self._outputFixedY = y
self.setDirty()
def setOutputPoint( self, point ):
"""
Sets the scene space point for where this connection should draw \
its output from. This value will only be used if no output \
node is defined.
:param point | <QPointF>
"""
self._outputPoint = point
self.setPath( self.rebuild() )
def setPadding( self, padding ):
"""
Sets the padding amount that will be used when drawing a connection \
whose points will overlap.
:param padding | <float>
"""
self._padding = padding
self.setDirty()
def setShowDirectionArrow( self, state = True ):
"""
Marks whether or not an arrow in the center of the path should be \
drawn, showing the direction that the connection is flowing in.
:param state | <bool>
"""
self._showDirectionArrow = state
self.setDirty()
def setShowInputArrow( self, state = True ):
"""
:remarks Marks whether or not an arrow should be shown pointing
at the input node.
:param state <bool>
"""
self._showInputArrow = state
self.setDirty()
def setShowOutputArrow( self, state = True ):
"""
:remarks Marks whether or not an arrow should be shown pointing at
the output node.
:param state <bool>
"""
self._showOutputArrow = state
self.setDirty()
def setSquashThreshold( self, amount ):
"""
:remarks Sets the threshold limit of when the connection should
start 'squashing', calculated based on the distance between
the input and output points when rebuilding.
:param amount <float>
"""
self._squashThreshold = amount
self.setDirty()
def setStyle( self, style ):
"""
:remarks Sets the style of the connection that will be used.
:param style <XConnectionStyle>
"""
self._style = style
self.setDirty()
self.update()
def setVisible( self, state ):
"""
Sets whether or not this connection's local visibility should be on.
:param state | ,bool>
"""
self._visible = state
super(XNodeConnection, self).setVisible(self.isVisible())
def setZValue( self, value ):
"""
Sets the z value for this connection, also updating the text item to
match the value if one is defined.
:param value | <int>
"""
super(XNodeConnection, self).setZValue(value)
if ( self._textItem ):
self._textItem.setZValue(value)
def showDirectionArrow( self ):
"""
:remarks Return whether or not the direction arrow is visible
for this connection.
:return <bool>
"""
return self._showDirectionArrow
def showInputArrow( self ):
"""
:remarks Return whether or not the input arrow is visible
for this connection.
:return <bool>
"""
return self._showInputArrow
def showOutputArrow( self ):
"""
:remarks Return whether or not the output arrow is visible
for this connection.
:return <bool>
"""
return self._showOutputArrow
def squashThreshold( self ):
"""
:remarks Returns the sqash threshold for when the line
should be squashed based on the input and output
points becoming too close together.
:return <float>
"""
return self._squashThreshold
def setText( self, text ):
"""
Sets the text for this connection to the inputed text.
:param text | <str>
"""
self._text = text
if ( text ):
if ( self._textItem is None ):
self._textItem = QGraphicsTextItem()
self._textItem.setParentItem(self)
self._textItem.setPlainText(text)
elif ( self._textItem ):
self.scene().removeItem(self._textItem)
self._textItem = None
def style( self ):
"""
:remarks Returns the style of the connection that is being drawn.
:return style <XConnectionStyle>
"""
return self._style
def syncLayerData( self, layerData = None ):
"""
Syncs the layer information for this item from the given layer data.
:param layerData | <dict>
"""
if ( not self._layer ):
return
if ( not layerData ):
layerData = self._layer.layerData()
self.setVisible( layerData.get('visible', True) )
if ( layerData.get('current') ):
# set the default parameters
self.setFlags( self.ItemIsSelectable )
self.setAcceptHoverEvents(True)
self.setZValue(99)
else:
# set the default parameters
self.setFlags( self.GraphicsItemFlags(0) )
self.setAcceptHoverEvents(True)
self.setZValue(layerData.get('zValue', 0)-1)
def text( self ):
"""
Returns the text for this connection.
:return <str>
"""
return self._text
def drawCorner(self, painter, position, cornerType, maxRadius=None):
#logging.debug(self.__class__.__name__ +": drawCorner() "+ self.cornerTypeString(cornerType))
thickness = self.CONNECTION_THICKNESS * self.zoomFactor()
halfthick = thickness / 2
cornerRoundness = halfthick**0.5
cornerOffset = halfthick * (cornerRoundness)
innerCorner = halfthick * (cornerRoundness - 1)
outerCorner = halfthick * (cornerRoundness + 1)
innerWidth = halfthick * (cornerRoundness - 1)
radius = halfthick * (cornerRoundness + 1)
if maxRadius:
maxRadius = max(maxRadius, thickness)
radius = min(radius, maxRadius)
if cornerType == self.CornerType.TOP_RIGHT:
startAngle = 0
outerCorner = QPointF(position.x() + halfthick - 2 * radius,
position.y() - halfthick)
innerCorner = QPointF(outerCorner.x(),
outerCorner.y() + (thickness))
center = QPointF(outerCorner.x() + radius,
outerCorner.y() + radius)
outerRect = QRectF(outerCorner, QSizeF(2 * radius, 2 * radius))
innerRect = QRectF(
innerCorner,
QSizeF((2 * radius - thickness), (2 * radius - thickness)))
outerStart = QPointF(outerCorner.x() + 2 * radius,
outerCorner.y() + (radius + halfthick))
innerStart = QPointF(outerCorner.x() + (radius - halfthick),
outerCorner.y())
elif cornerType == self.CornerType.TOP_LEFT:
startAngle = 90
outerCorner = QPointF(position.x() - halfthick,
position.y() - halfthick)
innerCorner = QPointF(outerCorner.x() + (thickness),
outerCorner.y() + (thickness))
center = QPointF(outerCorner.x() + radius,
outerCorner.y() + radius)
outerRect = QRectF(outerCorner, QSizeF(2 * radius, 2 * radius))
innerRect = QRectF(
innerCorner,
QSizeF((2 * radius - thickness), (2 * radius - thickness)))
outerStart = QPointF(outerCorner.x() + (radius + halfthick),
outerCorner.y())
innerStart = QPointF(outerCorner.x(),
outerCorner.y() + (radius + halfthick))
elif cornerType == self.CornerType.BOTTOM_LEFT:
startAngle = 180
outerCorner = QPointF(position.x() - halfthick,
position.y() + halfthick - 2 * radius)
innerCorner = QPointF(outerCorner.x() + (thickness),
outerCorner.y())
center = QPointF(outerCorner.x() + radius,
outerCorner.y() + radius)
outerRect = QRectF(outerCorner, QSizeF(2 * radius, 2 * radius))
innerRect = QRectF(
innerCorner,
QSizeF((2 * radius - thickness), (2 * radius - thickness)))
outerStart = QPointF(outerCorner.x(),
outerCorner.y() + (radius - halfthick))
innerStart = QPointF(outerCorner.x() + (radius + halfthick),
outerCorner.y() + (2 * radius))
elif cornerType == self.CornerType.BOTTOM_RIGHT:
startAngle = 270
outerCorner = QPointF(position.x() + halfthick - 2 * radius,
position.y() + halfthick - 2 * radius)
innerCorner = QPointF(outerCorner.x(), outerCorner.y())
center = QPointF(outerCorner.x() + radius,
outerCorner.y() + radius)
outerRect = QRectF(outerCorner, QSizeF(2 * radius, 2 * radius))
innerRect = QRectF(
innerCorner,
QSizeF((2 * radius - thickness), (2 * radius - thickness)))
outerStart = QPointF(outerCorner.x() + (radius - halfthick),
outerCorner.y() + 2 * radius)
innerStart = QPointF(outerCorner.x() + 2 * radius,
outerCorner.y() + (radius - halfthick))
else:
# No defined corner, so nothing to draw.
#print "PointToPointConnection.drawCorner() - No valid corner, aborting..."
return
if painter.redirected(painter.device()):
# e.q. QPixmap.grabWidget()
painter.setBrush(self.FILL_COLOR1)
else:
brush = QRadialGradient(center, radius)
if radius >= thickness:
brush.setColorAt((radius - thickness) / radius,
self.FILL_COLOR1) # inner border
brush.setColorAt((radius - halfthick + 1) / radius,
self.FILL_COLOR2) # center of line
else:
# If zoom is too small use single color
brush.setColorAt(0, self.FILL_COLOR1)
brush.setColorAt(1, self.FILL_COLOR1) # outer border
painter.setBrush(brush)
path = QPainterPath()
path.moveTo(outerStart)
path.arcTo(outerRect, startAngle, 90)
path.lineTo(innerStart)
path.arcTo(innerRect, startAngle + 90, -90)
path.closeSubpath()
#painter.setPen(Qt.NoPen)
painter.drawPath(path)