class GraphicsTextWidget(QGraphicsWidget):
def __init__(self, text, parent=None, **kwargs):
super().__init__(parent, **kwargs)
self.labelItem = QGraphicsTextItem(self)
self.setHtml(text)
self.labelItem.document().documentLayout().documentSizeChanged.connect(
self.onLayoutChanged
)
def setGeometry(self, rect):
self.prepareGeometryChange()
super().setGeometry(rect)
def onLayoutChanged(self, *args):
self.updateGeometry()
def sizeHint(self, which, constraint=QSizeF()):
if which == Qt.MinimumSize:
return self.labelItem.boundingRect().size()
else:
return self.labelItem.boundingRect().size()
def setTextWidth(self, width):
self.labelItem.setTextWidth(width)
def setHtml(self, text):
self.labelItem.setHtml(text)
def bgc_name_face(node, *args, **kargs):
"""
This is the item generator. It must receive a node object, and
returns a Qt4 graphics item that can be used as a node face.
"""
# Receive an arbitrary number of arguments, in this case width and
# Height of the faces and the information about the BGC
width = args[0]
height = args[1]
# Add the popup
interactive_face = InteractiveItem("Class : {}\nRelated MIBiG : {}\nCluster family : {}".format(args[2], args[4], args[3]), 0, 0, width, height)
# Keep a link within the item to access node info
interactive_face.node = node
# Remove border around the masterItem
interactive_face.setPen(QPen(QtCore.Qt.NoPen))
# Add ellipse around text
ellipse = QGraphicsEllipseItem(interactive_face.rect())
ellipse.setParentItem(interactive_face)
# Change ellipse color
ellipse.setBrush(QBrush(QColor(args[6])))
# Add node name within the ellipse
text = QGraphicsTextItem(args[5])
text.setTextWidth(50)
text.setParentItem(ellipse)
# Center text according to masterItem size
text_width = text.boundingRect().width()
text_height = text.boundingRect().height()
center = interactive_face.boundingRect().center()
text.setPos(center.x()-text_width/2, center.y()-text_height/2)
return interactive_face
def scientific_name_face(node, *args, **kwargs):
scientific_name_text = QGraphicsTextItem()
#underscore = node.name.replace("_", " ")
words = node.name.split("_")
text = []
if len(words) < 2:
# some sort of acronym or bin name, leave it alone
text = words
elif len(words) > 2:
if len(words) >= 5:
text.extend(
['<b>' + words[0] + ' <i> ' + words[1], words[2] + ' </i> '])
text.extend(words[3:] + ['</b>'])
elif len(words) == 3:
text.extend([
' <span style="color:grey"><i> ' + words[0],
words[1] + words[2] + ' </i></span>'
])
else:
# assume that everything after the
# second word is strain name
# which should not get italicized
text.extend([
' <span style="color:grey"><i> ' + words[0],
words[1] + ' </i></span>'
])
text.extend(words[2:])
else:
text.extend([
' <span style="color:grey"><i> ' + words[0],
words[1] + ' </i></span> '
])
scientific_name_text.setHtml(' '.join(text))
# below is a bit of a hack - I've found that the height of the bounding
# box gives a bit too much padding around the name, so I just minus 10
# from the height and recenter it. Don't know whether this is a generally
# applicable number to use
#myFont = QFont()
masterItem = QGraphicsRectItem(
0, 0,
scientific_name_text.boundingRect().width(),
scientific_name_text.boundingRect().height() - 10)
scientific_name_text.setParentItem(masterItem)
center = masterItem.boundingRect().center()
scientific_name_text.setPos(
masterItem.boundingRect().x(),
center.y() - scientific_name_text.boundingRect().height() / 2)
# I don't want a border around the masterItem
masterItem.setPen(QPen(QtCore.Qt.NoPen))
return masterItem
def scientific_name_face(node, *args, **kwargs):
scientific_name_text = QGraphicsTextItem()
words = node.visual_label.split()
text = []
if hasattr(node, 'bg_col'):
container_div = '<div style="background-color:{};">'.format(node.bgcolor)
text.append(container_div)
if len(words) < 2:
# some sort of acronym or bin name, leave it alone
text.extend(words)
elif len(words) > 2:
if words[0] == 'Candidatus':
# for candidatus names, only the Candidatus part is italicised
# name shortening it for brevity
text.append('<i>Ca.</i>')
text.extend(words[1:])
elif re.match('^[A-Z]+$', words[0]):
# If the first word is in all caps then it is an abreviation
# so we don't want to italicize that at all
text.extend(words)
else:
# assume that everything after the second word is strain name
# which should not get italicised
text.extend(['<i>'+words[0],words[1]+'</i>'])
text.extend(words[2:])
else:
text.extend(['<i>'+words[0],words[1]+'</i>'])
if hasattr(node, 'bg_col'):
text.append('</div>')
scientific_name_text.setHtml(' '.join(text))
#print(scientific_name_text.boundingRect().width(), scientific_name_text.boundingRect().height())
# below is a bit of a hack - I've found that the height of the bounding
# box gives a bit too much padding around the name, so I just minus 10
# from the height and recenter it. Don't know whether this is a generally
# applicable number to use
masterItem = QGraphicsRectItem(0, 0, scientific_name_text.boundingRect().width(), scientific_name_text.boundingRect().height() - 10)
scientific_name_text.setParentItem(masterItem)
center = masterItem.boundingRect().center()
scientific_name_text.setPos(masterItem.boundingRect().x(), center.y() - scientific_name_text.boundingRect().height()/2)
# I dont want a border around the masterItem
masterItem.setPen(QPen(QtCore.Qt.NoPen))
return masterItem
class OWLegendItem(QGraphicsObject):
"""
Represents a legend item with a title and a point symbol.
:param name: The text to display
:type name: str
:param point: The point symbol
:type point: :obj:`.OWPoint`
:param parent: The parent item, passed to QGraphicsItem
:type parent: :obj:`QGraphicsItem`
.. seealso:: :meth:`.OWLegend.add_item`, :meth:`.OWLegend.add_curve`.
"""
def __init__(self, name, point, parent):
QGraphicsObject.__init__(self, parent)
self.text_item = QGraphicsTextItem(name, self)
if point:
s = point.size()
height = max(2 * s, self.text_item.boundingRect().height())
else:
height = self.text_item.boundingRect().height()
p = 0.5 * height
self.text_item.setPos(height, 0)
self.point_item = point
if point:
self.point_item.setParentItem(self)
self.point_item.setPos(p, p)
self._rect = QRectF(0, 0,
height + self.text_item.boundingRect().width(),
height)
self.rect_item = QGraphicsRectItem(self._rect, self)
self.rect_item.setPen(QPen(Qt.NoPen))
self.rect_item.stackBefore(self.text_item)
if self.point_item:
self.rect_item.stackBefore(self.point_item)
def boundingRect(self):
return self._rect
def paint(self, painter, option, widget):
pass
class OWLegendTitle(QGraphicsObject):
"""
A legend item that shows ``text`` with a bold font and no symbol.
"""
def __init__(self, text, parent):
QGraphicsObject.__init__(self, parent)
self.text_item = QGraphicsTextItem(text + ':', self)
f = self.text_item.font()
f.setBold(True)
self.text_item.setFont(f)
self.rect_item = QGraphicsRectItem(self.text_item.boundingRect(), self)
self.rect_item.setPen(QPen(Qt.NoPen))
self.rect_item.stackBefore(self.text_item)
def boundingRect(self):
return self.text_item.boundingRect()
def paint(self, painter, option, widget):
pass
class OWLegendTitle(QGraphicsObject):
"""
A legend item that shows ``text`` with a bold font and no symbol.
"""
def __init__(self, text, parent):
QGraphicsObject.__init__(self, parent)
self.text_item = QGraphicsTextItem(text + ':', self)
f = self.text_item.font()
f.setBold(True)
self.text_item.setFont(f)
self.rect_item = QGraphicsRectItem(self.text_item.boundingRect(), self)
self.rect_item.setPen(QPen(Qt.NoPen))
self.rect_item.stackBefore(self.text_item)
def boundingRect(self):
return self.text_item.boundingRect()
def paint(self, painter, option, widget):
pass
class OWLegendItem(QGraphicsObject):
"""
Represents a legend item with a title and a point symbol.
:param name: The text to display
:type name: str
:param point: The point symbol
:type point: :obj:`.OWPoint`
:param parent: The parent item, passed to QGraphicsItem
:type parent: :obj:`QGraphicsItem`
.. seealso:: :meth:`.OWLegend.add_item`, :meth:`.OWLegend.add_curve`.
"""
def __init__(self, name, point, parent):
QGraphicsObject.__init__(self, parent)
self.text_item = QGraphicsTextItem(name, self)
if point:
s = point.size()
height = max(2*s, self.text_item.boundingRect().height())
else:
height = self.text_item.boundingRect().height()
p = 0.5 * height
self.text_item.setPos(height, 0)
self.point_item = point
if point:
self.point_item.setParentItem(self)
self.point_item.setPos(p, p)
self._rect = QRectF(0, 0, height + self.text_item.boundingRect().width(), height )
self.rect_item = QGraphicsRectItem(self._rect, self)
self.rect_item.setPen(QPen(Qt.NoPen))
self.rect_item.stackBefore(self.text_item)
if self.point_item:
self.rect_item.stackBefore(self.point_item)
def boundingRect(self):
return self._rect
def paint(self, painter, option, widget):
pass
def trinomial_face(binom,
spp,
ftype="Verdana",
fsize=10,
fgcolor="black",
fstyle="normal",
bold=False):
"""
Stolen from:
https://connorskennerton.wordpress.com/2016/11/16/python-ete3-formatting-organism-names-the-way-i-want/
"""
font = QFont(ftype, fsize)
font.setBold(bold)
if fstyle == "italic":
font.setStyle(QFont.StyleItalic)
elif fstyle == "oblique":
font.setStyle(QFont.StyleOblique)
text = QGraphicsTextItem()
text.setFont(font)
if spp is None:
text.setHtml("<i>{}</i>".format(binom))
else:
text.setHtml("<i>{}</i> {}".format(binom, spp))
rect = QGraphicsRectItem(0, 0,
text.boundingRect().width(),
text.boundingRect().height() - 10)
text.setParentItem(rect)
center = rect.boundingRect().center()
text.setPos(rect.boundingRect().x(),
center.y() - text.boundingRect().height() / 2)
# no border
rect.setPen(QPen(QtCore.Qt.NoPen))
return ete3.faces.StaticItemFace(rect)
def setPos(self, x, y):
self.x, self.y = x, y
rect = QGraphicsTextItem.boundingRect(self)
if self.vertical:
h, w = rect.height(), rect.width()
rect.setWidth(h)
rect.setHeight(-w)
if int(self.alignment & Qt.AlignRight):
x -= rect.width()
elif int(self.alignment & Qt.AlignHCenter):
x -= rect.width() / 2.
if int(self.alignment & Qt.AlignBottom):
y -= rect.height()
elif int(self.alignment & Qt.AlignVCenter):
y -= rect.height() / 2.
QGraphicsTextItem.setPos(self, x, y)
def setPos(self, x, y):
self.x, self.y = x, y
rect = QGraphicsTextItem.boundingRect(self)
if self.vertical:
h, w = rect.height(), rect.width()
rect.setWidth(h)
rect.setHeight(-w)
if int(self.alignment & Qt.AlignRight):
x -= rect.width()
elif int(self.alignment & Qt.AlignHCenter):
x -= rect.width() / 2.
if int(self.alignment & Qt.AlignBottom):
y -= rect.height()
elif int(self.alignment & Qt.AlignVCenter):
y -= rect.height() / 2.
QGraphicsTextItem.setPos(self, x, y)
class TimestampItem(QGraphicsRectItem):
"""
Represents a block in the diagram
"""
def __init__(self, parent, name='Untitled', width=180, height=40):
"""
Constructor
"""
QGraphicsRectItem.__init__(self)
self.parentWidget = parent
if sys.version_info > (3, ):
if isinstance(name, bytes):
name = str(name, "utf8", errors="ignore")
self.label = QGraphicsTextItem(name, self)
self.setColor(blockColor="#FFFFFF")
self.changeSize(width, height)
def setColor(self, blockColor):
"""
Set color
"""
color = QColor(0, 0, 0)
color.setNamedColor(blockColor)
self.setPen(QPen(color, 1))
self.setBrush(QBrush(color))
def changeSize(self, w, h):
"""
Resize block function
"""
# Limit the block size
self.setRect(0.0, 0.0, w, h)
# center label:
rect = self.label.boundingRect()
lw, lh = rect.width(), rect.height()
lx = (w - lw) / 2
ly = (h - lh) / 2
self.label.setPos(lx, ly)
return w, h
class GradientLegendItem(QGraphicsObject, GraphicsWidgetAnchor):
gradient_width = 20
def __init__(self, title, palette, values, parent):
QGraphicsObject.__init__(self, parent)
GraphicsWidgetAnchor.__init__(self)
self.parent = self.legend = parent
self.palette = palette
self.values = values
self.title = QGraphicsTextItem('%s:' % title, self)
f = self.title.font()
f.setBold(True)
self.title.setFont(f)
self.title_item = QGraphicsRectItem(self.title.boundingRect(), self)
self.title_item.setPen(QPen(Qt.NoPen))
self.title_item.stackBefore(self.title)
self.label_items = [QGraphicsTextItem(text, self) for text in values]
for i in self.label_items:
i.setTextWidth(50)
self.rect = QRectF()
self.gradient_item = QGraphicsRectItem(self)
self.gradient = QLinearGradient()
self.gradient.setStops([(v * 0.1, self.palette[v * 0.1])
for v in range(11)])
self.orientation = Qt.Horizontal
self.set_orientation(Qt.Vertical)
self.setFlag(QGraphicsItem.ItemIgnoresTransformations, True)
self.setFlag(QGraphicsItem.ItemIsMovable, True)
def set_orientation(self, orientation):
return
if self.orientation == orientation:
return
self.orientation = orientation
if self.orientation == Qt.Vertical:
height = max(item.boundingRect().height()
for item in self.label_items)
total_height = height * max(5, len(self.label_items))
interval = (total_height -
self.label_items[-1].boundingRect().height()
) / (len(self.label_items) - 1)
self.gradient_item.setRect(10, 0, self.gradient_width, total_height)
self.gradient.setStart(10, 0)
self.gradient.setFinalStop(10, total_height)
self.gradient_item.setBrush(QBrush(self.gradient))
self.gradient_item.setPen(QPen(Qt.NoPen))
y = -20 # hja, no; dela --> pri boundingRect() zato pristejem +20
x = 0
move_item_xy(self.title, x, y, False)
y = 10
x = 30
for item in self.label_items:
move_item_xy(item, x, y, False)
# self.parent.graph.animate_plot)
y += interval
self.rect = QRectF(10, 0,
self.gradient_width +
max(item.boundingRect().width()
for item in self.label_items),
self.label_items[0].boundingRect().height() *
max(5, len(self.label_items)))
else:
# za horizontalno orientacijo nisem dodajal title-a
width = 50
height = max(item.boundingRect().height()
for item in self.label_items)
total_width = width * max(5, len(self.label_items))
interval = (total_width -
self.label_items[-1].boundingRect().width()
) / (len(self.label_items) - 1)
self.gradient_item.setRect(0, 0, total_width, self.gradient_width)
self.gradient.setStart(0, 0)
self.gradient.setFinalStop(total_width, 0)
self.gradient_item.setBrush(QBrush(self.gradient))
self.gradient_item.setPen(QPen(Qt.NoPen))
x = 0
y = 30
for item in self.label_items:
move_item_xy(item, x, y, False)
# self.parent.graph.animate_plot)
x += interval
self.rect = QRectF(0, 0, total_width, self.gradient_width + height)
# noinspection PyPep8Naming
def boundingRect(self):
width = max(self.rect.width(), self.title_item.boundingRect().width())
height = self.rect.height() + self.title_item.boundingRect().height()
return QRectF(self.rect.left(), self.rect.top(), width, height)
def paint(self, painter, option, widget):
pass
class VennIntersectionArea(QGraphicsPathItem):
def __init__(self, parent=None, text=""):
super(QGraphicsPathItem, self).__init__(parent)
self.setAcceptHoverEvents(True)
self.setPen(QPen(Qt.NoPen))
self.text = QGraphicsTextItem(self)
layout = self.text.document().documentLayout()
layout.documentSizeChanged.connect(self._onLayoutChanged)
self._text = ""
self._anchor = QPointF()
def setText(self, text):
if self._text != text:
self._text = text
self.text.setPlainText(text)
def text(self):
return self._text
def setTextAnchor(self, pos):
if self._anchor != pos:
self._anchor = pos
self._updateTextAnchor()
def hoverEnterEvent(self, event):
self.setZValue(self.zValue() + 1)
return QGraphicsPathItem.hoverEnterEvent(self, event)
def hoverLeaveEvent(self, event):
self.setZValue(self.zValue() - 1)
return QGraphicsPathItem.hoverLeaveEvent(self, event)
# def mousePressEvent(self, event):
# pos = event.pos()
# parent = self.parentItem()
# pbrect = parent.boundingRect()
# w, h = pbrect.width(), pbrect.height()
# print "(%.3f, %.3f)" % (pos.x() / w, pos.y() / h)
# super(VennIntersectionArea, self).mousePressEvent(event)
def paint(self, painter, option, widget=None):
painter.save()
path = self.path()
brush = QBrush(self.brush())
pen = QPen(self.pen())
if option.state & QStyle.State_Selected:
pen.setColor(Qt.red)
brush.setStyle(Qt.DiagCrossPattern)
brush.setColor(QColor(40, 40, 40, 100))
elif option.state & QStyle.State_MouseOver:
pen.setColor(Qt.blue)
if option.state & QStyle.State_MouseOver:
brush.setColor(QColor(100, 100, 100, 100))
if brush.style() == Qt.NoBrush:
# Make sure the highlight is actually visible.
brush.setStyle(Qt.SolidPattern)
painter.setPen(pen)
painter.setBrush(brush)
painter.drawPath(path)
painter.restore()
def itemChange(self, change, value):
if change == QGraphicsPathItem.ItemSelectedHasChanged:
if value.toBool():
self.setZValue(self.zValue() + 1)
else:
self.setZValue(self.zValue() - 1)
return QGraphicsPathItem.itemChange(self, change, value)
def _updateTextAnchor(self):
rect = self.text.boundingRect()
pos = anchor_rect(rect, self._anchor)
self.text.setPos(pos)
def _onLayoutChanged(self):
self._updateTextAnchor()
class VennIntersectionArea(QGraphicsPathItem):
def __init__(self, parent=None, text=""):
super(QGraphicsPathItem, self).__init__(parent)
self.setAcceptHoverEvents(True)
self.setPen(QPen(Qt.NoPen))
self.text = QGraphicsTextItem(self)
layout = self.text.document().documentLayout()
layout.documentSizeChanged.connect(self._onLayoutChanged)
self._text = ""
self._anchor = QPointF()
def setText(self, text):
if self._text != text:
self._text = text
self.text.setPlainText(text)
def text(self):
return self._text
def setTextAnchor(self, pos):
if self._anchor != pos:
self._anchor = pos
self._updateTextAnchor()
def hoverEnterEvent(self, event):
self.setZValue(self.zValue() + 1)
return QGraphicsPathItem.hoverEnterEvent(self, event)
def hoverLeaveEvent(self, event):
self.setZValue(self.zValue() - 1)
return QGraphicsPathItem.hoverLeaveEvent(self, event)
def paint(self, painter, option, widget=None):
painter.save()
path = self.path()
brush = QBrush(self.brush())
pen = QPen(self.pen())
if option.state & QStyle.State_Selected:
pen.setColor(Qt.red)
brush.setStyle(Qt.DiagCrossPattern)
brush.setColor(QColor(40, 40, 40, 100))
elif option.state & QStyle.State_MouseOver:
pen.setColor(Qt.blue)
if option.state & QStyle.State_MouseOver:
brush.setColor(QColor(100, 100, 100, 100))
if brush.style() == Qt.NoBrush:
# Make sure the highlight is actually visible.
brush.setStyle(Qt.SolidPattern)
painter.setPen(pen)
painter.setBrush(brush)
painter.drawPath(path)
painter.restore()
def itemChange(self, change, value):
if change == QGraphicsPathItem.ItemSelectedHasChanged:
self.setZValue(self.zValue() + (1 if value else -1))
return QGraphicsPathItem.itemChange(self, change, value)
def _updateTextAnchor(self):
rect = self.text.boundingRect()
pos = anchor_rect(rect, self._anchor)
self.text.setPos(pos)
def _onLayoutChanged(self):
self._updateTextAnchor()
class EFrameLayout(QGraphicsPolygonItem):
def __init__(self, parent=None, scene=None):
super(EFrameLayout, self).__init__(parent, scene)
self.setFlag(QGraphicsItem.ItemIsMovable, True)
self.setAcceptsHoverEvents(True)
self.__name = QGraphicsTextItem()
self.__name.setPlainText('Frame Layout')
self.__handleWidth = 500
self.__handleHeight = 20
self.__separator = 5
self.__boundExtra = 3 + self.pen().width()
self.__handleRect = QRectF( 0.0 , 0.0 , self.__handleWidth, self.__handleHeight )
self.__controlsBound = 0.0
self.__controls = []
self.__isDefaultPen = False
self.__isCollapsed = True
self.__pens = { 0: EDraw.EColor.DefaultLeaveHoverPen, 1: EDraw.EColor.DefaultEnterHoverPen }
self.setPen(self.__pens[self.__isDefaultPen])
@property
def Label(self): return self.__name.toPlainText()
@Label.setter
def Label(self, label): self.__name.setPlainText( str( label ) )
@property
def Width(self): return self.__handleWidth
@Width.setter
def Width(self, width):
self.__handleWidth = width
self.updateGeometry()
def toggleContentVisibility(self):
if not len(self.__controls): return
if self.__controls[0].isVisible():
[ control.hide() for control in self.__controls ]
self.__isCollapsed = True
return
[ control.show() for control in self.__controls ]
self.__isCollapsed = False
def updateGeometry(self):
self.__handleRect = QRectF( 0.0 , 0.0 , self.__handleWidth, self.__handleHeight )
if not len(self.__controls) or self.__isCollapsed:
self.__controlsBound = 0.0
return
self.__controlsBound = 0.0
self.__controlsBound = self.__separator
self.__controlsBound += sum( [ control.boundingRect().height() + self.__separator for control in self.__controls ] )
step = self.__handleHeight + self.__separator * 2
for control in self.__controls:
control.Name.setTextWidth( self.__controlNameWidth )
control.Width = self.__handleRect.normalized().adjusted( 5.0, 0.0, -5.0, 0.0 ).width()
control.setPos( 5.0 , step )
step += control.boundingRect().height() + self.__separator
def addControl(self, control):
if not isinstance(control, EControlsGroup): raise AttributeError
self.__controls.append(control)
control.setParentItem(self)
control.setFlag(QGraphicsItem.ItemIsMovable, False)
self.__controlNameWidth = max([ control.Name.boundingRect().width() for control in self.__controls ]) + 5
self.__isCollapsed = False
self.updateGeometry()
def clear(self):
[ control.setParentItem(None) for control in self.__controls ]
self.__controls = []
self.updateGeometry()
def mouseDoubleClickEvent(self, mouseEvent):
QGraphicsPolygonItem.mouseDoubleClickEvent(self, mouseEvent)
self.toggleContentVisibility()
self.updateGeometry()
def shape(self): return QGraphicsItem.shape(self)
def boundingRect(self):
return self.__handleRect.normalized().adjusted( 0.0, 0.0, 0.0, self.__controlsBound )
def paint(self, painter, option, widget=None):
if not self.__isCollapsed:
painter.setPen( QPen( QColor( 0, 0, 0, 50 ), 2 , Qt.SolidLine ) )
painter.setBrush( QColor( 0, 0, 0, 50 ) )
painter.drawRect( self.boundingRect().adjusted( self.pen().width(), self.__handleHeight , -self.pen().width(), 0.0 ) )
painter.setPen(self.pen())
painter.setBrush( EDraw.EColor.LinearGradient( self.__handleRect, Qt.darkGray ) )
#painter.drawPolygon( QPolygonF( self.__handleRect.normalized().adjusted(-self.__boundExtra, 0.0, self.__boundExtra, 0.0 ) ) )
painter.drawPolygon( QPolygonF( self.__handleRect ) )
painter.setPen(Qt.lightGray)
r = QRectF( 0.0, 0.0, self.__name.boundingRect().width(), self.__handleRect.height() )
painter.drawText( r, Qt.AlignCenter, self.__name.toPlainText() )
class VennIntersectionArea(QGraphicsPathItem):
def __init__(self, parent=None, text=""):
super(QGraphicsPathItem, self).__init__(parent)
self.setAcceptHoverEvents(True)
self.setPen(QPen(Qt.NoPen))
self.text = QGraphicsTextItem(self)
layout = self.text.document().documentLayout()
layout.documentSizeChanged.connect(self._onLayoutChanged)
self._text = ""
self._anchor = QPointF()
def setText(self, text):
if self._text != text:
self._text = text
self.text.setPlainText(text)
def text(self):
return self._text
def setTextAnchor(self, pos):
if self._anchor != pos:
self._anchor = pos
self._updateTextAnchor()
def hoverEnterEvent(self, event):
self.setZValue(self.zValue() + 1)
return QGraphicsPathItem.hoverEnterEvent(self, event)
def hoverLeaveEvent(self, event):
self.setZValue(self.zValue() - 1)
return QGraphicsPathItem.hoverLeaveEvent(self, event)
def mousePressEvent(self, event):
if event.button() == Qt.LeftButton:
if event.modifiers() & Qt.AltModifier:
self.setSelected(False)
elif event.modifiers() & Qt.ControlModifier:
self.setSelected(not self.isSelected())
elif event.modifiers() & Qt.ShiftModifier:
self.setSelected(True)
else:
for area in self.parentWidget().vennareas():
area.setSelected(False)
self.setSelected(True)
def mouseReleaseEvent(self, event):
pass
def paint(self, painter, option, widget=None):
painter.save()
path = self.path()
brush = QBrush(self.brush())
pen = QPen(self.pen())
if option.state & QStyle.State_Selected:
pen.setColor(Qt.red)
brush.setStyle(Qt.DiagCrossPattern)
brush.setColor(QColor(40, 40, 40, 100))
elif option.state & QStyle.State_MouseOver:
pen.setColor(Qt.blue)
if option.state & QStyle.State_MouseOver:
brush.setColor(QColor(100, 100, 100, 100))
if brush.style() == Qt.NoBrush:
# Make sure the highlight is actually visible.
brush.setStyle(Qt.SolidPattern)
painter.setPen(pen)
painter.setBrush(brush)
painter.drawPath(path)
painter.restore()
def itemChange(self, change, value):
if change == QGraphicsPathItem.ItemSelectedHasChanged:
self.setZValue(self.zValue() + (1 if value else -1))
return QGraphicsPathItem.itemChange(self, change, value)
def _updateTextAnchor(self):
rect = self.text.boundingRect()
pos = anchor_rect(rect, self._anchor)
self.text.setPos(pos)
def _onLayoutChanged(self):
self._updateTextAnchor()
class EFrameLayout(QGraphicsPolygonItem):
def __init__(self, parent=None, scene=None):
super(EFrameLayout, self).__init__(parent, scene)
self.setFlag(QGraphicsItem.ItemIsMovable, True)
self.setAcceptsHoverEvents(True)
self.__name = QGraphicsTextItem()
self.__name.setPlainText('Frame Layout')
self.__handleWidth = 500
self.__handleHeight = 20
self.__separator = 5
self.__boundExtra = 3 + self.pen().width()
self.__handleRect = QRectF(0.0, 0.0, self.__handleWidth,
self.__handleHeight)
self.__controlsBound = 0.0
self.__controls = []
self.__isDefaultPen = False
self.__isCollapsed = True
self.__pens = {
0: EDraw.EColor.DefaultLeaveHoverPen,
1: EDraw.EColor.DefaultEnterHoverPen
}
self.setPen(self.__pens[self.__isDefaultPen])
@property
def Label(self):
return self.__name.toPlainText()
@Label.setter
def Label(self, label):
self.__name.setPlainText(str(label))
@property
def Width(self):
return self.__handleWidth
@Width.setter
def Width(self, width):
self.__handleWidth = width
self.updateGeometry()
def toggleContentVisibility(self):
if not len(self.__controls): return
if self.__controls[0].isVisible():
[control.hide() for control in self.__controls]
self.__isCollapsed = True
return
[control.show() for control in self.__controls]
self.__isCollapsed = False
def updateGeometry(self):
self.__handleRect = QRectF(0.0, 0.0, self.__handleWidth,
self.__handleHeight)
if not len(self.__controls) or self.__isCollapsed:
self.__controlsBound = 0.0
return
self.__controlsBound = 0.0
self.__controlsBound = self.__separator
self.__controlsBound += sum([
control.boundingRect().height() + self.__separator
for control in self.__controls
])
step = self.__handleHeight + self.__separator * 2
for control in self.__controls:
control.Name.setTextWidth(self.__controlNameWidth)
control.Width = self.__handleRect.normalized().adjusted(
5.0, 0.0, -5.0, 0.0).width()
control.setPos(5.0, step)
step += control.boundingRect().height() + self.__separator
def addControl(self, control):
if not isinstance(control, EControlsGroup): raise AttributeError
self.__controls.append(control)
control.setParentItem(self)
control.setFlag(QGraphicsItem.ItemIsMovable, False)
self.__controlNameWidth = max([
control.Name.boundingRect().width() for control in self.__controls
]) + 5
self.__isCollapsed = False
self.updateGeometry()
def clear(self):
[control.setParentItem(None) for control in self.__controls]
self.__controls = []
self.updateGeometry()
def mouseDoubleClickEvent(self, mouseEvent):
QGraphicsPolygonItem.mouseDoubleClickEvent(self, mouseEvent)
self.toggleContentVisibility()
self.updateGeometry()
def shape(self):
return QGraphicsItem.shape(self)
def boundingRect(self):
return self.__handleRect.normalized().adjusted(0.0, 0.0, 0.0,
self.__controlsBound)
def paint(self, painter, option, widget=None):
if not self.__isCollapsed:
painter.setPen(QPen(QColor(0, 0, 0, 50), 2, Qt.SolidLine))
painter.setBrush(QColor(0, 0, 0, 50))
painter.drawRect(self.boundingRect().adjusted(
self.pen().width(), self.__handleHeight, -self.pen().width(),
0.0))
painter.setPen(self.pen())
painter.setBrush(
EDraw.EColor.LinearGradient(self.__handleRect, Qt.darkGray))
#painter.drawPolygon( QPolygonF( self.__handleRect.normalized().adjusted(-self.__boundExtra, 0.0, self.__boundExtra, 0.0 ) ) )
painter.drawPolygon(QPolygonF(self.__handleRect))
painter.setPen(Qt.lightGray)
r = QRectF(0.0, 0.0,
self.__name.boundingRect().width(),
self.__handleRect.height())
painter.drawText(r, Qt.AlignCenter, self.__name.toPlainText())
class OWAxis(QGraphicsItem):
Role = OWPalette.Axis
def __init__(self,
id,
title='',
title_above=False,
title_location=AxisMiddle,
line=None,
arrows=AxisEnd,
plot=None):
QGraphicsItem.__init__(self)
self.setFlag(QGraphicsItem.ItemHasNoContents)
self.setZValue(AxisZValue)
self.id = id
self.title = title
self.title_location = title_location
self.data_line = line
self.plot = plot
self.graph_line = None
self.size = None
self.scale = None
self.tick_length = (10, 5, 0)
self.arrows = arrows
self.title_above = title_above
self.line_item = QGraphicsLineItem(self)
self.title_item = QGraphicsTextItem(self)
self.end_arrow_item = None
self.start_arrow_item = None
self.show_title = False
self.scale = None
path = QPainterPath()
path.setFillRule(Qt.WindingFill)
path.moveTo(0, 3.09)
path.lineTo(0, -3.09)
path.lineTo(9.51, 0)
path.closeSubpath()
self.arrow_path = path
self.label_items = []
self.label_bg_items = []
self.tick_items = []
self._ticks = []
self.zoom_transform = QTransform()
self.labels = None
self.auto_range = None
self.auto_scale = True
self.zoomable = False
self.update_callback = None
self.max_text_width = 50
self.text_margin = 5
self.always_horizontal_text = False
def update_ticks(self):
self._ticks = []
major, medium, minor = self.tick_length
if self.labels is not None and not self.auto_scale:
for i, text in enumerate(self.labels):
self._ticks.append((i, text, medium, 1))
else:
if self.scale and not self.auto_scale:
min, max, step = self.scale
elif self.auto_range:
min, max = self.auto_range
if min is not None and max is not None:
step = (max - min) / 10
else:
return
else:
return
if max == min:
return
magnitude = int(3 * log10(abs(max - min)) + 1)
if magnitude % 3 == 0:
first_place = 1
elif magnitude % 3 == 1:
first_place = 2
else:
first_place = 5
magnitude = magnitude / 3 - 1
step = first_place * pow(10, magnitude)
val = ceil(min / step) * step
while val <= max:
self._ticks.append((val, "%.4g" % val, medium, step))
val = val + step
def update_graph(self):
if self.update_callback:
self.update_callback()
def update(self, zoom_only=False):
self.update_ticks()
line_color = self.plot.color(OWPalette.Axis)
text_color = self.plot.color(OWPalette.Text)
if not self.graph_line or not self.scene():
return
self.line_item.setLine(self.graph_line)
self.line_item.setPen(line_color)
if self.title:
self.title_item.setHtml('<b>' + self.title + '</b>')
self.title_item.setDefaultTextColor(text_color)
if self.title_location == AxisMiddle:
title_p = 0.5
elif self.title_location == AxisEnd:
title_p = 0.95
else:
title_p = 0.05
title_pos = self.graph_line.pointAt(title_p)
v = self.graph_line.normalVector().unitVector()
dense_text = False
if hasattr(self, 'title_margin'):
offset = self.title_margin
elif self._ticks:
if self.should_be_expanded():
offset = 55
dense_text = True
else:
offset = 35
else:
offset = 10
if self.title_above:
title_pos = title_pos + (v.p2() - v.p1()) * (
offset + QFontMetrics(self.title_item.font()).height())
else:
title_pos = title_pos - (v.p2() - v.p1()) * offset
## TODO: Move it according to self.label_pos
self.title_item.setVisible(self.show_title)
self.title_item.setRotation(-self.graph_line.angle())
c = self.title_item.mapToParent(
self.title_item.boundingRect().center())
tl = self.title_item.mapToParent(
self.title_item.boundingRect().topLeft())
self.title_item.setPos(title_pos - c + tl)
## Arrows
if not zoom_only:
if self.start_arrow_item:
self.scene().removeItem(self.start_arrow_item)
self.start_arrow_item = None
if self.end_arrow_item:
self.scene().removeItem(self.end_arrow_item)
self.end_arrow_item = None
if self.arrows & AxisStart:
if not zoom_only or not self.start_arrow_item:
self.start_arrow_item = QGraphicsPathItem(
self.arrow_path, self)
self.start_arrow_item.setPos(self.graph_line.p1())
self.start_arrow_item.setRotation(-self.graph_line.angle() + 180)
self.start_arrow_item.setBrush(line_color)
self.start_arrow_item.setPen(line_color)
if self.arrows & AxisEnd:
if not zoom_only or not self.end_arrow_item:
self.end_arrow_item = QGraphicsPathItem(self.arrow_path, self)
self.end_arrow_item.setPos(self.graph_line.p2())
self.end_arrow_item.setRotation(-self.graph_line.angle())
self.end_arrow_item.setBrush(line_color)
self.end_arrow_item.setPen(line_color)
## Labels
n = len(self._ticks)
resize_plot_item_list(self.label_items, n, QGraphicsTextItem, self)
resize_plot_item_list(self.label_bg_items, n, QGraphicsRectItem, self)
resize_plot_item_list(self.tick_items, n, QGraphicsLineItem, self)
test_rect = QRectF(self.graph_line.p1(),
self.graph_line.p2()).normalized()
test_rect.adjust(-1, -1, 1, 1)
n_v = self.graph_line.normalVector().unitVector()
if self.title_above:
n_p = n_v.p2() - n_v.p1()
else:
n_p = n_v.p1() - n_v.p2()
l_v = self.graph_line.unitVector()
l_p = l_v.p2() - l_v.p1()
for i in range(n):
pos, text, size, step = self._ticks[i]
hs = 0.5 * step
tick_pos = self.map_to_graph(pos)
if not test_rect.contains(tick_pos):
self.tick_items[i].setVisible(False)
self.label_items[i].setVisible(False)
continue
item = self.label_items[i]
item.setVisible(True)
if not zoom_only:
if self.id in XAxes or getattr(self, 'is_horizontal', False):
item.setHtml('<center>' + Qt.escape(text.strip()) +
'</center>')
else:
item.setHtml(Qt.escape(text.strip()))
item.setTextWidth(-1)
text_angle = 0
if dense_text:
w = min(item.boundingRect().width(), self.max_text_width)
item.setTextWidth(w)
if self.title_above:
label_pos = tick_pos + n_p * (
w + self.text_margin
) + l_p * item.boundingRect().height() / 2
else:
label_pos = tick_pos + n_p * self.text_margin + l_p * item.boundingRect(
).height() / 2
text_angle = -90 if self.title_above else 90
else:
w = min(
item.boundingRect().width(),
QLineF(self.map_to_graph(pos - hs),
self.map_to_graph(pos + hs)).length())
label_pos = tick_pos + n_p * self.text_margin - l_p * w / 2
item.setTextWidth(w)
if not self.always_horizontal_text:
if self.title_above:
item.setRotation(-self.graph_line.angle() - text_angle)
else:
item.setRotation(self.graph_line.angle() - text_angle)
item.setPos(label_pos)
item.setDefaultTextColor(text_color)
self.label_bg_items[i].setRect(item.boundingRect())
self.label_bg_items[i].setPen(QPen(Qt.NoPen))
self.label_bg_items[i].setBrush(self.plot.color(OWPalette.Canvas))
item = self.tick_items[i]
item.setVisible(True)
tick_line = QLineF(v)
tick_line.translate(-tick_line.p1())
tick_line.setLength(size)
if self.title_above:
tick_line.setAngle(tick_line.angle() + 180)
item.setLine(tick_line)
item.setPen(line_color)
item.setPos(self.map_to_graph(pos))
@staticmethod
def make_title(label, unit=None):
lab = '<i>' + label + '</i>'
if unit:
lab = lab + ' [' + unit + ']'
return lab
def set_line(self, line):
self.graph_line = line
self.update()
def set_title(self, title):
self.title = title
self.update()
def set_show_title(self, b):
self.show_title = b
self.update()
def set_labels(self, labels):
self.labels = labels
self.graph_line = None
self.auto_scale = False
self.update_ticks()
self.update_graph()
def set_scale(self, min, max, step_size):
self.scale = (min, max, step_size)
self.graph_line = None
self.auto_scale = False
self.update_ticks()
self.update_graph()
def set_tick_length(self, minor, medium, major):
self.tick_length = (minor, medium, major)
self.update()
def map_to_graph(self, x):
min, max = self.plot.bounds_for_axis(self.id)
if min == max:
return QPointF()
line_point = self.graph_line.pointAt((x - min) / (max - min))
end_point = line_point * self.zoom_transform
return self.projection(end_point, self.graph_line)
@staticmethod
def projection(point, line):
norm = line.normalVector()
norm.translate(point - norm.p1())
p = QPointF()
type = line.intersect(norm, p)
return p
def continuous_labels(self):
min, max, step = self.scale
magnitude = log10(abs(max - min))
def paint(self, painter, option, widget):
pass
def boundingRect(self):
return QRectF()
def ticks(self):
if not self._ticks:
self.update_ticks()
return self._ticks
def bounds(self):
if self.labels:
return -0.2, len(self.labels) - 0.8
elif self.scale:
min, max, _step = self.scale
return min, max
elif self.auto_range:
return self.auto_range
else:
return 0, 1
def should_be_expanded(self):
self.update_ticks()
return self.id in YAxes or self.always_horizontal_text or sum(
len(t[1]) for t in self._ticks) * 12 > self.plot.width()
class EControlsGroup(QGraphicsPolygonItem):
def __init__(self, parent=None, scene=None):
super(EControlsGroup, self).__init__(parent, scene)
self.setFlag(QGraphicsItem.ItemIsMovable, True)
self.setAcceptsHoverEvents(True)
self.__kId = str( uuid.uuid1() )
self.__name = QGraphicsTextItem()
self.__name.setPlainText('EddGroup')
self.__sWidth = 500
self.__sHeight = 20
self.__sExtra = 8
self.__controlsOffset = 5
self.__isDefaultPen = False
self.__pens = { 0: EDraw.EColor.DefaultLeaveHoverPen, 1: EDraw.EColor.DefaultEnterHoverPen }
self.setPen(self.__pens[self.__isDefaultPen])
self.__shapeRect = QRectF( 0 , 0, self.__sWidth, self.__sHeight )
self.__controls = []
def updateGeometry(self):
adjustableControls = [ control for control in self.__controls if control.Adjustable ]
if len(adjustableControls):
fixedControlsBounds = self.__name.boundingRect().width()
fixedControlsBounds += sum( map( int, [ control.boundingRect().width() for control in self.__controls if not control.Adjustable ] ))
adjustableControlsWidth = int(( self.__sWidth - fixedControlsBounds )) / len(adjustableControls)
step = self.__name.boundingRect().width()
for control in self.__controls:
if control.Adjustable:
control.Width = adjustableControlsWidth - self.__controlsOffset
control.setPos( step, 0.0 )
step += control.boundingRect().width() + self.__controlsOffset
self.__shapeRect = QRectF( 0 , -(self.__sExtra / 2), self.__sWidth, max([ control.Height for control in self.__controls ]) + self.__sExtra )
@property
def kId(self): return self.__kId
@property
def Name(self): return self.__name
@Name.setter
def Name(self, name ):
" %s" % self.__name.setPlainText(name)
self.updateGeometry()
@property
def Width(self): return self.__sWidth
@Width.setter
def Width(self, width):
self.__sWidth = width #- self.__controlsOffset * len( self.__controls )
self.updateGeometry()
@property
def Height(self): return self.__sHeight
@property
def Controls(self): return self.__controls
@Controls.setter
def Controls(self, control):
control.setParentItem(self)
self.__controls.append(control)
self.updateGeometry()
def toggleHighlight(self):
if self.__isDefaultPen:
self.__isDefaultPen = False
self.setPen(self.__pens[self.__isDefaultPen])
return
self.__isDefaultPen = True
self.setPen(self.__pens[self.__isDefaultPen])
def hoverEnterEvent(self, mouseEvent):
QGraphicsPolygonItem.hoverEnterEvent(self, mouseEvent)
self.toggleHighlight()
def hoverLeaveEvent(self, mouseEvent):
QGraphicsPolygonItem.hoverLeaveEvent(self, mouseEvent)
self.toggleHighlight()
def shape(self): return QGraphicsItem.shape(self)
def boundingRect(self):
return self.__shapeRect
def paint(self, painter, option, widget=None):
painter.setPen(self.pen())
painter.setBrush( EDraw.EColor.LinearGradient( self.boundingRect(), Qt.darkGray ) )
painter.drawPolygon( QPolygonF( self.boundingRect() ) )
painter.setPen(Qt.lightGray)
r = QRectF( 0.0, -(self.__sExtra / 2), self.__name.boundingRect().width(), self.boundingRect().height() )
painter.drawText( r , Qt.AlignRight | Qt.AlignCenter , "%s: " % self.__name.toPlainText() )
class OWAxis(QGraphicsItem):
Role = OWPalette.Axis
def __init__(self, id, title = '', title_above = False, title_location = AxisMiddle, line = None, arrows = 0, plot = None):
QGraphicsItem.__init__(self)
self.setFlag(QGraphicsItem.ItemHasNoContents)
self.setZValue(AxisZValue)
self.id = id
self.title = title
self.title_location = title_location
self.data_line = line
self.plot = plot
self.graph_line = None
self.size = None
self.scale = None
self.tick_length = (10, 5, 0)
self.arrows = arrows
self.title_above = title_above
self.line_item = QGraphicsLineItem(self)
self.title_item = QGraphicsTextItem(self)
self.end_arrow_item = None
self.start_arrow_item = None
self.show_title = False
self.scale = None
path = QPainterPath()
path.setFillRule(Qt.WindingFill)
path.moveTo(0, 3.09)
path.lineTo(0, -3.09)
path.lineTo(9.51, 0)
path.closeSubpath()
self.arrow_path = path
self.label_items = []
self.label_bg_items = []
self.tick_items = []
self._ticks = []
self.zoom_transform = QTransform()
self.labels = None
self.auto_range = None
self.auto_scale = True
self.zoomable = False
self.update_callback = None
self.max_text_width = 50
self.text_margin = 5
self.always_horizontal_text = False
@staticmethod
def compute_scale(min, max):
magnitude = int(3*log10(abs(max-min)) + 1)
if magnitude % 3 == 0:
first_place = 1
elif magnitude % 3 == 1:
first_place = 2
else:
first_place = 5
magnitude = magnitude // 3 - 1
step = first_place * pow(10, magnitude)
first_val = ceil(min/step) * step
return first_val, step
def update_ticks(self):
self._ticks = []
major, medium, minor = self.tick_length
if self.labels is not None and not self.auto_scale:
for i, text in enumerate(self.labels):
self._ticks.append( ( i, text, medium, 1 ) )
else:
if self.scale and not self.auto_scale:
min, max, step = self.scale
elif self.auto_range:
min, max = self.auto_range
if min is not None and max is not None:
step = (max - min)/10
else:
return
else:
return
if max == min:
return
val, step = self.compute_scale(min, max)
while val <= max:
self._ticks.append( ( val, "%.4g" % val, medium, step ) )
val += step
def update_graph(self):
if self.update_callback:
self.update_callback()
def update(self, zoom_only = False):
self.update_ticks()
line_color = self.plot.color(OWPalette.Axis)
text_color = self.plot.color(OWPalette.Text)
if not self.graph_line or not self.scene():
return
self.line_item.setLine(self.graph_line)
self.line_item.setPen(line_color)
if self.title:
self.title_item.setHtml('<b>' + self.title + '</b>')
self.title_item.setDefaultTextColor(text_color)
if self.title_location == AxisMiddle:
title_p = 0.5
elif self.title_location == AxisEnd:
title_p = 0.95
else:
title_p = 0.05
title_pos = self.graph_line.pointAt(title_p)
v = self.graph_line.normalVector().unitVector()
dense_text = False
if hasattr(self, 'title_margin'):
offset = self.title_margin
elif self._ticks:
if self.should_be_expanded():
offset = 55
dense_text = True
else:
offset = 35
else:
offset = 10
if self.title_above:
title_pos = title_pos + (v.p2() - v.p1())*(offset + QFontMetrics(self.title_item.font()).height())
else:
title_pos = title_pos - (v.p2() - v.p1())*offset
## TODO: Move it according to self.label_pos
self.title_item.setVisible(self.show_title)
self.title_item.setRotation(-self.graph_line.angle())
c = self.title_item.mapToParent(self.title_item.boundingRect().center())
tl = self.title_item.mapToParent(self.title_item.boundingRect().topLeft())
self.title_item.setPos(title_pos - c + tl)
## Arrows
if not zoom_only:
if self.start_arrow_item:
self.scene().removeItem(self.start_arrow_item)
self.start_arrow_item = None
if self.end_arrow_item:
self.scene().removeItem(self.end_arrow_item)
self.end_arrow_item = None
if self.arrows & AxisStart:
if not zoom_only or not self.start_arrow_item:
self.start_arrow_item = QGraphicsPathItem(self.arrow_path, self)
self.start_arrow_item.setPos(self.graph_line.p1())
self.start_arrow_item.setRotation(-self.graph_line.angle() + 180)
self.start_arrow_item.setBrush(line_color)
self.start_arrow_item.setPen(line_color)
if self.arrows & AxisEnd:
if not zoom_only or not self.end_arrow_item:
self.end_arrow_item = QGraphicsPathItem(self.arrow_path, self)
self.end_arrow_item.setPos(self.graph_line.p2())
self.end_arrow_item.setRotation(-self.graph_line.angle())
self.end_arrow_item.setBrush(line_color)
self.end_arrow_item.setPen(line_color)
## Labels
n = len(self._ticks)
resize_plot_item_list(self.label_items, n, QGraphicsTextItem, self)
resize_plot_item_list(self.label_bg_items, n, QGraphicsRectItem, self)
resize_plot_item_list(self.tick_items, n, QGraphicsLineItem, self)
test_rect = QRectF(self.graph_line.p1(), self.graph_line.p2()).normalized()
test_rect.adjust(-1, -1, 1, 1)
n_v = self.graph_line.normalVector().unitVector()
if self.title_above:
n_p = n_v.p2() - n_v.p1()
else:
n_p = n_v.p1() - n_v.p2()
l_v = self.graph_line.unitVector()
l_p = l_v.p2() - l_v.p1()
for i in range(n):
pos, text, size, step = self._ticks[i]
hs = 0.5 * step
tick_pos = self.map_to_graph( pos )
if not test_rect.contains(tick_pos):
self.tick_items[i].setVisible(False)
self.label_items[i].setVisible(False)
continue
item = self.label_items[i]
item.setVisible(True)
if not zoom_only:
if self.id in XAxes or getattr(self, 'is_horizontal', False):
item.setHtml( '<center>' + Qt.escape(text.strip()) + '</center>')
else:
item.setHtml(Qt.escape(text.strip()))
item.setTextWidth(-1)
text_angle = 0
if dense_text:
w = min(item.boundingRect().width(), self.max_text_width)
item.setTextWidth(w)
if self.title_above:
label_pos = tick_pos + n_p * (w + self.text_margin) + l_p * item.boundingRect().height()/2
else:
label_pos = tick_pos + n_p * self.text_margin + l_p * item.boundingRect().height()/2
text_angle = -90 if self.title_above else 90
else:
w = min(item.boundingRect().width(), QLineF(self.map_to_graph(pos - hs), self.map_to_graph(pos + hs) ).length())
label_pos = tick_pos + n_p * self.text_margin - l_p * w/2
item.setTextWidth(w)
if not self.always_horizontal_text:
if self.title_above:
item.setRotation(-self.graph_line.angle() - text_angle)
else:
item.setRotation(self.graph_line.angle() - text_angle)
item.setPos(label_pos)
item.setDefaultTextColor(text_color)
self.label_bg_items[i].setRect(item.boundingRect())
self.label_bg_items[i].setPen(QPen(Qt.NoPen))
self.label_bg_items[i].setBrush(self.plot.color(OWPalette.Canvas))
item = self.tick_items[i]
item.setVisible(True)
tick_line = QLineF(v)
tick_line.translate(-tick_line.p1())
tick_line.setLength(size)
if self.title_above:
tick_line.setAngle(tick_line.angle() + 180)
item.setLine( tick_line )
item.setPen(line_color)
item.setPos(self.map_to_graph(pos))
@staticmethod
def make_title(label, unit = None):
lab = '<i>' + label + '</i>'
if unit:
lab = lab + ' [' + unit + ']'
return lab
def set_line(self, line):
self.graph_line = line
self.update()
def set_title(self, title):
self.title = title
self.update()
def set_show_title(self, b):
self.show_title = b
self.update()
def set_labels(self, labels):
self.labels = labels
self.graph_line = None
self.auto_scale = False
self.update_ticks()
self.update_graph()
def set_scale(self, min, max, step_size):
self.scale = (min, max, step_size)
self.graph_line = None
self.auto_scale = False
self.update_ticks()
self.update_graph()
def set_tick_length(self, minor, medium, major):
self.tick_length = (minor, medium, major)
self.update()
def map_to_graph(self, x):
min, max = self.plot.bounds_for_axis(self.id)
if min == max:
return QPointF()
line_point = self.graph_line.pointAt( (x-min)/(max-min) )
end_point = line_point * self.zoom_transform
return self.projection(end_point, self.graph_line)
@staticmethod
def projection(point, line):
norm = line.normalVector()
norm.translate(point - norm.p1())
p = QPointF()
type = line.intersect(norm, p)
return p
def continuous_labels(self):
min, max, step = self.scale
magnitude = log10(abs(max-min))
def paint(self, painter, option, widget):
pass
def boundingRect(self):
return QRectF()
def ticks(self):
if not self._ticks:
self.update_ticks()
return self._ticks
def bounds(self):
if self.labels:
return -0.2, len(self.labels) -0.8
elif self.scale:
min, max, _step = self.scale
return min, max
elif self.auto_range:
return self.auto_range
else:
return 0, 1
def should_be_expanded(self):
self.update_ticks()
return self.id in YAxes or self.always_horizontal_text or sum(len(t[1]) for t in self._ticks) * 12 > self.plot.width()
def __init__(self, world):
QGraphicsPolygonItem.__init__(self)
#############################
### Build graph
#############################
graph = pydot.Dot()
graph.set_node_defaults(color = 'red', fontcolor = 'red', label = '\<orphan\>')
graph.set('overlap', 'prism')
# build adjacency graph from world
for area in world.areas:
# create node for each room
node = pydot.Node(area.id)
node.set( 'label', area.name )
if area == world.player.currentArea:
node.set( 'color', 'blue' )
node.set( 'fontcolor', 'blue' )
else:
node.set( 'color', 'black' )
node.set( 'fontcolor', 'black' )
graph.add_node(node)
# link to adjacent rooms
for feature in area.features:
for action in feature.actions:
finalEvent = None
for event in action.events:
if type(event) == events.PlayerMoveEvent:
finalEvent = pydot.Edge( src=area.id, dst=event.properties['destination'] )
if finalEvent is not None:
graph.add_edge( finalEvent )
################################
### Generate SVG from graph
################################
ps = graph.create_svg(prog='neato')
#########################################
### Build graphics items from SVG
#########################################
# build xml tree
ns = {'svg': 'http://www.w3.org/2000/svg'}
doc = ET.fromstring(ps)
# grab the root node properties
rootNode = doc.xpath('/svg:svg/svg:g[1]', namespaces=ns)[0]
polygon = rootNode.xpath('./svg:polygon', namespaces=ns)[0]
pointStr = polygon.xpath('./@points', namespaces=ns)[0]
penColor = QString(polygon.xpath('./@stroke', namespaces=ns)[0])
fillColor = QString(polygon.xpath('./@fill', namespaces=ns)[0])
# parse root polygon path
path = QPolygonF()
for pair in pointStr.split(' '):
dims = pair.split(',')
point = QPointF( float(dims[0]), float(dims[1]) )
path.append(point)
self.setPolygon(path)
# fill in root node colors
if QColor.isValidColor(penColor):
self.setPen( QColor(penColor) )
if QColor.isValidColor(fillColor):
self.setBrush( QColor(fillColor) )
# build each graph node
for xmlNode in rootNode.xpath('./svg:g', namespaces=ns):
group = QGraphicsRectItem(self)
group.setPen( Qt.transparent )
group.setBrush( Qt.transparent )
if xmlNode.attrib['class'] == 'node':
# find the area object
name = xmlNode.xpath('./svg:title', namespaces=ns)[0].text
group.setData( 0, QString(world.areas[world.areaLookup[name]].id) )
# get the ellipse info
ellipseNode = xmlNode.xpath('./svg:ellipse', namespaces=ns)[0]
elProps = { k: float(ellipseNode.attrib[k]) for k in ['cx', 'cy', 'rx', 'ry']}
rect = QRectF( elProps['cx']-elProps['rx'], elProps['cy']-elProps['ry'], 2*elProps['rx'], 2*elProps['ry'])
penColor = QString(ellipseNode.attrib['stroke'])
ellipseItem = QGraphicsEllipseItem(rect, group)
if QColor.isValidColor(penColor):
ellipseItem.setPen( QColor(penColor) )
# get the text info
textNode = xmlNode.xpath('./svg:text', namespaces=ns)[0]
text = textNode.text
textItem = QGraphicsTextItem(text, group)
penColor = textNode.attrib.get('fill', 'black')
nodePoint = QPointF(float(textNode.attrib['x']), float(textNode.attrib['y']))
textItem.setPos( nodePoint - textItem.boundingRect().center() + QPointF(0.0,-4.0))
if QColor.isValidColor(penColor):
textItem.setDefaultTextColor( QColor(penColor) )
group.setRect( ellipseItem.boundingRect() )
group.setFlags( QGraphicsRectItem.ItemIsSelectable )
elif xmlNode.attrib['class'] == 'edge':
# parse the line portion of the arrow
line = xmlNode.xpath('./svg:path', namespaces=ns)[0]
path = QPainterPath()
# pull info from xml file
linePath = line.attrib['d']
lineColor = line.attrib['stroke']
# parse path coords
points = re.findall( '(-?\d+\.\d+),(-?\d+\.\d+)', linePath )
if len(points) != 4:
continue
startPoint = QPointF( float(points[0][0]), float(points[0][1]) )
path.moveTo(startPoint)
curvePoints = []
for pointCoord in points[1:]:
curvePoints.append( QPointF(float(pointCoord[0]), float(pointCoord[1])) )
path.cubicTo( curvePoints[0], curvePoints[1], curvePoints[2] )
# construct path item
pathItem = QGraphicsPathItem(path, group)
if QColor.isValidColor(lineColor):
pathItem.setPen( QColor(lineColor) )
polyNode = xmlNode.xpath('./svg:polygon', namespaces=ns)[0]
# pull info from xml file
pointStr = polyNode.xpath('./@points', namespaces=ns)[0]
penColor = QString(polyNode.xpath('./@stroke', namespaces=ns)[0])
fillColor = QString(polyNode.xpath('./@fill', namespaces=ns)[0])
# parse polygon path
path = QPolygonF()
for pair in pointStr.split(' '):
dims = pair.split(',')
point = QPointF( float(dims[0]), float(dims[1]) )
path.append(point)
# construct polygon item
polygonItem = QGraphicsPolygonItem(path, group)
if QColor.isValidColor(penColor):
polygonItem.setPen( QColor(penColor) )
if QColor.isValidColor(fillColor):
polygonItem.setBrush( QColor(fillColor) )
group.setRect( pathItem.boundingRect() and polygonItem.boundingRect() )
class LinkItem(QGraphicsObject):
"""
A Link item in the canvas that connects two :class:`.NodeItem`\s in the
canvas.
The link curve connects two `Anchor` items (see :func:`setSourceItem`
and :func:`setSinkItem`). Once the anchors are set the curve
automatically adjusts its end points whenever the anchors move.
An optional source/sink text item can be displayed above the curve's
central point (:func:`setSourceName`, :func:`setSinkName`)
"""
#: Z value of the item
Z_VALUE = 0
def __init__(self, *args):
QGraphicsObject.__init__(self, *args)
self.setFlag(QGraphicsItem.ItemHasNoContents, True)
self.setAcceptedMouseButtons(Qt.RightButton | Qt.LeftButton)
self.setAcceptHoverEvents(True)
self.setZValue(self.Z_VALUE)
self.sourceItem = None
self.sourceAnchor = None
self.sinkItem = None
self.sinkAnchor = None
self.curveItem = LinkCurveItem(self)
self.sourceIndicator = LinkAnchorIndicator(self)
self.sinkIndicator = LinkAnchorIndicator(self)
self.sourceIndicator.hide()
self.sinkIndicator.hide()
self.linkTextItem = QGraphicsTextItem(self)
self.__sourceName = ""
self.__sinkName = ""
self.__dynamic = False
self.__dynamicEnabled = False
self.hover = False
def setSourceItem(self, item, anchor=None):
"""
Set the source `item` (:class:`.NodeItem`). Use `anchor`
(:class:`.AnchorPoint`) as the curve start point (if ``None`` a new
output anchor will be created using ``item.newOutputAnchor()``).
Setting item to ``None`` and a valid anchor is a valid operation
(for instance while mouse dragging one end of the link).
"""
if item is not None and anchor is not None:
if anchor not in item.outputAnchors():
raise ValueError("Anchor must be belong to the item")
if self.sourceItem != item:
if self.sourceAnchor:
# Remove a previous source item and the corresponding anchor
self.sourceAnchor.scenePositionChanged.disconnect(
self._sourcePosChanged
)
if self.sourceItem is not None:
self.sourceItem.removeOutputAnchor(self.sourceAnchor)
self.sourceItem = self.sourceAnchor = None
self.sourceItem = item
if item is not None and anchor is None:
# Create a new output anchor for the item if none is provided.
anchor = item.newOutputAnchor()
# Update the visibility of the start point indicator.
self.sourceIndicator.setVisible(bool(item))
if anchor != self.sourceAnchor:
if self.sourceAnchor is not None:
self.sourceAnchor.scenePositionChanged.disconnect(
self._sourcePosChanged
)
self.sourceAnchor = anchor
if self.sourceAnchor is not None:
self.sourceAnchor.scenePositionChanged.connect(
self._sourcePosChanged
)
self.__updateCurve()
def setSinkItem(self, item, anchor=None):
"""
Set the sink `item` (:class:`.NodeItem`). Use `anchor`
(:class:`.AnchorPoint`) as the curve end point (if ``None`` a new
input anchor will be created using ``item.newInputAnchor()``).
Setting item to ``None`` and a valid anchor is a valid operation
(for instance while mouse dragging one and of the link).
"""
if item is not None and anchor is not None:
if anchor not in item.inputAnchors():
raise ValueError("Anchor must be belong to the item")
if self.sinkItem != item:
if self.sinkAnchor:
# Remove a previous source item and the corresponding anchor
self.sinkAnchor.scenePositionChanged.disconnect(
self._sinkPosChanged
)
if self.sinkItem is not None:
self.sinkItem.removeInputAnchor(self.sinkAnchor)
self.sinkItem = self.sinkAnchor = None
self.sinkItem = item
if item is not None and anchor is None:
# Create a new input anchor for the item if none is provided.
anchor = item.newInputAnchor()
# Update the visibility of the end point indicator.
self.sinkIndicator.setVisible(bool(item))
if self.sinkAnchor != anchor:
if self.sinkAnchor is not None:
self.sinkAnchor.scenePositionChanged.disconnect(
self._sinkPosChanged
)
self.sinkAnchor = anchor
if self.sinkAnchor is not None:
self.sinkAnchor.scenePositionChanged.connect(
self._sinkPosChanged
)
self.__updateCurve()
def setFont(self, font):
"""
Set the font for the channel names text item.
"""
if font != self.font():
self.linkTextItem.setFont(font)
self.__updateText()
def font(self):
"""
Return the font for the channel names text.
"""
return self.linkTextItem.font()
def setChannelNamesVisible(self, visible):
"""
Set the visibility of the channel name text.
"""
self.linkTextItem.setVisible(visible)
def setSourceName(self, name):
"""
Set the name of the source (used in channel name text).
"""
if self.__sourceName != name:
self.__sourceName = name
self.__updateText()
def sourceName(self):
"""
Return the source name.
"""
return self.__sourceName
def setSinkName(self, name):
"""
Set the name of the sink (used in channel name text).
"""
if self.__sinkName != name:
self.__sinkName = name
self.__updateText()
def sinkName(self):
"""
Return the sink name.
"""
return self.__sinkName
def _sinkPosChanged(self, *arg):
self.__updateCurve()
def _sourcePosChanged(self, *arg):
self.__updateCurve()
def __updateCurve(self):
self.prepareGeometryChange()
if self.sourceAnchor and self.sinkAnchor:
source_pos = self.sourceAnchor.anchorScenePos()
sink_pos = self.sinkAnchor.anchorScenePos()
source_pos = self.curveItem.mapFromScene(source_pos)
sink_pos = self.curveItem.mapFromScene(sink_pos)
# Adaptive offset for the curve control points to avoid a
# cusp when the two points have the same y coordinate
# and are close together
delta = source_pos - sink_pos
dist = math.sqrt(delta.x() ** 2 + delta.y() ** 2)
cp_offset = min(dist / 2.0, 60.0)
# TODO: make the curve tangent orthogonal to the anchors path.
path = QPainterPath()
path.moveTo(source_pos)
path.cubicTo(source_pos + QPointF(cp_offset, 0),
sink_pos - QPointF(cp_offset, 0),
sink_pos)
self.curveItem.setPath(path)
self.sourceIndicator.setPos(source_pos)
self.sinkIndicator.setPos(sink_pos)
self.__updateText()
else:
self.setHoverState(False)
self.curveItem.setPath(QPainterPath())
def __updateText(self):
self.prepareGeometryChange()
if self.__sourceName or self.__sinkName:
if self.__sourceName != self.__sinkName:
text = u"{0} \u2192 {1}".format(self.__sourceName,
self.__sinkName)
else:
# If the names are the same show only one.
# Is this right? If the sink has two input channels of the
# same type having the name on the link help elucidate
# the scheme.
text = self.__sourceName
else:
text = ""
self.linkTextItem.setPlainText(text)
path = self.curveItem.path()
if not path.isEmpty():
center = path.pointAtPercent(0.5)
angle = path.angleAtPercent(0.5)
brect = self.linkTextItem.boundingRect()
transform = QTransform()
transform.translate(center.x(), center.y())
transform.rotate(-angle)
# Center and move above the curve path.
transform.translate(-brect.width() / 2, -brect.height())
self.linkTextItem.setTransform(transform)
def removeLink(self):
self.setSinkItem(None)
self.setSourceItem(None)
self.__updateCurve()
def setHoverState(self, state):
if self.hover != state:
self.prepareGeometryChange()
self.hover = state
self.sinkIndicator.setHoverState(state)
self.sourceIndicator.setHoverState(state)
self.curveItem.setHoverState(state)
def hoverEnterEvent(self, event):
# Hover enter event happens when the mouse enters any child object
# but we only want to show the 'hovered' shadow when the mouse
# is over the 'curveItem', so we install self as an event filter
# on the LinkCurveItem and listen to its hover events.
self.curveItem.installSceneEventFilter(self)
return QGraphicsObject.hoverEnterEvent(self, event)
def hoverLeaveEvent(self, event):
# Remove the event filter to prevent unnecessary work in
# scene event filter when not needed
self.curveItem.removeSceneEventFilter(self)
return QGraphicsObject.hoverLeaveEvent(self, event)
def sceneEventFilter(self, obj, event):
if obj is self.curveItem:
if event.type() == QEvent.GraphicsSceneHoverEnter:
self.setHoverState(True)
elif event.type() == QEvent.GraphicsSceneHoverLeave:
self.setHoverState(False)
return QGraphicsObject.sceneEventFilter(self, obj, event)
def boundingRect(self):
return self.childrenBoundingRect()
def shape(self):
return self.curveItem.shape()
def setEnabled(self, enabled):
"""
Reimplemented from :class:`QGraphicsObject`
Set link enabled state. When disabled the link is rendered with a
dashed line.
"""
# This getter/setter pair override a property from the base class.
# They should be renamed to e.g. setLinkEnabled/linkEnabled
self.curveItem.setLinkEnabled(enabled)
def isEnabled(self):
return self.curveItem.isLinkEnabled()
def setDynamicEnabled(self, enabled):
"""
Set the link's dynamic enabled state.
If the link is `dynamic` it will be rendered in red/green color
respectively depending on the state of the dynamic enabled state.
"""
if self.__dynamicEnabled != enabled:
self.__dynamicEnabled = enabled
if self.__dynamic:
self.__updatePen()
def isDynamicEnabled(self):
"""
Is the link dynamic enabled.
"""
return self.__dynamicEnabled
def setDynamic(self, dynamic):
"""
Mark the link as dynamic (i.e. it responds to
:func:`setDynamicEnabled`).
"""
if self.__dynamic != dynamic:
self.__dynamic = dynamic
self.__updatePen()
def isDynamic(self):
"""
Is the link dynamic.
"""
return self.__dynamic
def __updatePen(self):
self.prepareGeometryChange()
if self.__dynamic:
if self.__dynamicEnabled:
color = QColor(0, 150, 0, 150)
else:
color = QColor(150, 0, 0, 150)
normal = QPen(QBrush(color), 2.0)
hover = QPen(QBrush(color.darker(120)), 2.1)
else:
normal = QPen(QBrush(QColor("#9CACB4")), 2.0)
hover = QPen(QBrush(QColor("#7D7D7D")), 2.1)
self.curveItem.setCurvePenSet(normal, hover)
class TaskGraphicsItem (QGraphicsEllipseItem):
def __init__(self, rect=None):
super(TaskGraphicsItem, self).__init__()
if rect is not None:
self.setRect(rect)
self.setPen(QPen(Qt.NoPen))
# Setup the text item
self.textItem = QGraphicsTextItem()
self.textItem.setParentItem(self)
self.textItem.rotate(-90)
self.textItem.setDefaultTextColor(QColor(255, 255, 255))
# The dimensions to reach via a LERP.
self.startPos = QPointF(0, 0)
self.endPos = QPointF(0, 0)
self.startDiameter = 1
self.endDiameter = 1
self.centerMark = QGraphicsEllipseItem()
self.centerMark.setBrush(QBrush(Qt.white))
self.centerMark.setPen(QPen(Qt.NoPen))
self.centerMark.setParentItem(self)
self.pid = -1
# To determine if it is associated with an active process.
self.used = False
def mousePressEvent(self, event):
print "Clicked On Ellipse at: ", self.rect().topLeft()
def set_pid(self, pid):
self.pid = pid
def set_name(self, str_name):
self.textItem.setPlainText(str_name)
def update_name_pos(self):
rect = self.boundingRect()
text_rect = self.textItem.boundingRect()
# Center text (on the x-axis) and offset (on the y-axis) so it doesn't overlap the ellipse item.
x_text = rect.x() + rect.width()/2 - text_rect.height()/2
y_text = rect.y() + 100 + text_rect.width() + rect.height()
self.textItem.setPos(x_text, y_text)
# Time step is in seconds.
def update(self, time_step):
diameter = self.rect().width() + self.lerp_rate(self.startDiameter, self.endDiameter, time_step)
if diameter <= 1:
diameter = 1
pos = self.rect().topLeft()
x = pos.x() + self.lerp_rate(self.startPos.x(), self.endPos.x(), time_step)
y = pos.y() + self.lerp_rate(self.startPos.y(), self.endPos.y(), time_step)
self.setRect(QRectF(x, y, diameter, diameter))
self.update_name_pos()
self.update_center_mark()
def update_center_mark(self):
scale = self.scene().views()[0].currentScale
hwidth = self.rect().width() / 2.0
diam = 2.0 / scale
# Only mark center for large enough items.
if hwidth * 0.2 > diam:
self.centerMark.setVisible(True)
hdiam = diam / 2.0
pos = self.rect().topLeft()
x = pos.x() - hdiam + hwidth
y = pos.y() - hdiam + hwidth
self.centerMark.setRect(QRectF(x, y, diam, diam))
else:
self.centerMark.setVisible(False)
# Return the linear interpolation rate. Reach start to end at a rate of 'growth rate'
@staticmethod
def lerp_rate(start, end, time_step):
return (end - start) * time_step
class BlockItem(QGraphicsRectItem):
"""
Represents a block in the diagram
"""
def __init__(self,
parent,
name='Untitled',
width=180,
height=40,
blockColor="#A5A2A5",
data=None,
bold=False,
italic=False,
status=True):
"""
Constructor
"""
QGraphicsRectItem.__init__(self)
self.parentWidget = parent
self.internalData = data
self.status = status
color = QColor(0, 0, 0)
color.setNamedColor(blockColor)
self.setPen(QPen(color, 2))
if sys.version_info > (3, ) and isinstance(name, bytes):
name = str(name, "utf8", errors="ignore")
self.label = QGraphicsTextItem(name, self)
self.setFlags(self.ItemIsSelectable)
self.setCursor(QCursor(Qt.PointingHandCursor))
self.changeSize(width, height)
def setData(self, data):
"""
Set data
"""
self.internalData = data
def setColor(self, blockColor):
"""
Set color
"""
color = QColor(0, 0, 0)
color.setNamedColor(blockColor)
self.setPen(QPen(color, 1))
self.setBrush(QBrush(color))
def changeSize(self, w, h):
"""
Resize block function
"""
# Limit the block size
self.setRect(0.0, 0.0, w, h)
# center label:
rect = self.label.boundingRect()
lw, lh = rect.width(), rect.height()
lx = (w - lw) / 2
ly = (h - lh) / 2
self.label.setPos(lx, ly)
return w, h
def mouseReleaseEvent(self, event):
"""
On mouse release event
"""
if self.internalData is not None:
data = self.internalData
if isinstance(self.internalData, list):
# [('Step 1', {'expected': 'result expected', 'action': 'step description',
# 'actual': 'success', 'result': 'PASS',
# 'summary': 'step sample'}), ('%payload-v1%', {'raw': '',
# 'len': 0, 'time': 1421484488.314928})]
data_tmp = self.internalData[0]
data = "%s\n" % data_tmp[0]
data += "\nSummary: %s" % data_tmp[1]['summary']
data += "\n\nAction: %s" % data_tmp[1]['action']
data += "\nExpected: %s" % data_tmp[1]['expected']
data += "\n\nResult: %s" % data_tmp[1]['result']
if 'actual' in data_tmp[1]:
data += "\nActual: %s" % data_tmp[1]['actual']
self.parentWidget.logEdit.setText(data)
else:
self.parentWidget.logEdit.setText("")
def drawHistogram(self):
if self.result is None:
return
# Label the histogram
#self.minValueLabel.setText(str(self.minValue))
#self.maxValueLabel.setText(str(self.maxValue))
minvaltext = QGraphicsTextItem(str(self.minValue))
minvaltextheight = minvaltext.boundingRect().height()
maxvaltext = QGraphicsTextItem(str(self.maxValue))
maxvaltextwidth = maxvaltext.boundingRect().width()
#self.showInfo(str(self.result))
# Check which element should be used for the histogram
element = 1
maxvalue = 0.0
for i in range(len(self.result)):
if self.result[i][element] > maxvalue:
maxvalue = self.result[i][element]
# Find the maximum value for scaling
cutoffvalue = maxvalue
if (self.frequencyRangeSpinBox.value() > 0):
cutoffvalue = self.frequencyRangeSpinBox.value()
#self.maxNumberLabel.setText(str(maxvalue))
#self.maxNumberLabel.setText(str(cutoffvalue))
self.scene.clear()
if maxvalue == 0:
return
viewprect = QRectF(self.histogramGraphicsView.viewport().rect())
self.histogramGraphicsView.setSceneRect(viewprect)
bottom = self.histogramGraphicsView.sceneRect().bottom()
top = self.histogramGraphicsView.sceneRect().top()
left = self.histogramGraphicsView.sceneRect().left()
right = self.histogramGraphicsView.sceneRect().right()
height = bottom - top - 1
width = right - left - 1
padding = 3
toppadding = 3
bottompadding = minvaltextheight
# Determine the width of the left margin (depends on the y range)
clog = log(cutoffvalue,10)
clogint = int(clog)
#clogrem = clog % clogint
yincr = pow(10,clogint)
dummytext = QGraphicsTextItem(str(yincr))
# The left padding must accomodate the y labels
leftpadding = dummytext.boundingRect().width()
#leftpadding = 30
# Find the width of the maximium frequency label
maxfreqtext = QGraphicsTextItem(str(cutoffvalue))
maxfreqtextwidth = maxvaltext.boundingRect().width()
rightpadding = maxfreqtextwidth
width = width - (leftpadding + rightpadding)
height = height - (toppadding + bottompadding)
barwidth = width / self.bins
#center = QPoint(left + width / 2.0, top + height / 2.0)
#start = QPointF(self.histogramGraphicsView.mapToScene(center))
# Create the histogram
for i in range(self.bins):
#barheight = height * self.result[i][element] / maxvalue
barheight = height * self.result[i][element] / cutoffvalue
barrect = QGraphicsRectItem(QRectF(leftpadding + barwidth * i,
height-barheight+toppadding, barwidth, barheight))
barbrush = QBrush(QColor(255,153,102))
barrect.setBrush(barbrush)
self.scene.addItem(barrect)
# Determine the increments for the horizontal lines
if (cutoffvalue // yincr <= 5 and yincr > 1 ):
yincr = yincr / 2
if (cutoffvalue // yincr < 5 and yincr > 10 ):
yincr = yincr / 2
# Draw horizontal lines with labels
yval = 0
while (yval <= cutoffvalue):
scval = height + toppadding - yval * height / cutoffvalue
hline = QGraphicsLineItem(QLineF(leftpadding-2, scval,width+(leftpadding),scval))
hlinepen = QPen(QColor(153,153,153))
hline.setPen(hlinepen)
self.scene.addItem(hline)
ylabtext = QGraphicsTextItem(str(int(yval)))
ylabtextheight = ylabtext.boundingRect().height()
ylabtextwidth = ylabtext.boundingRect().width()
ylabtext.setPos(leftpadding - ylabtextwidth, scval - ylabtextheight/2)
if (scval - ylabtextheight/2 > 0):
self.scene.addItem(ylabtext)
yval = yval + yincr
#yincr = (cutoffvalue / 10)
minvaltextwidth = minvaltext.boundingRect().width()
minvaltext.setPos(leftpadding - minvaltextwidth/2, height + toppadding + bottompadding - minvaltextheight)
self.scene.addItem(minvaltext)
maxvaltext.setPos(leftpadding + width - maxvaltextwidth/2, height + toppadding + bottompadding - minvaltextheight)
self.scene.addItem(maxvaltext)
maxfreqtext.setPos(leftpadding + width, 0)
self.scene.addItem(maxfreqtext)
class EControlsGroup(QGraphicsPolygonItem):
def __init__(self, parent=None, scene=None):
super(EControlsGroup, self).__init__(parent, scene)
self.setFlag(QGraphicsItem.ItemIsMovable, True)
self.setAcceptsHoverEvents(True)
self.__kId = str(uuid.uuid1())
self.__name = QGraphicsTextItem()
self.__name.setPlainText('EddGroup')
self.__sWidth = 500
self.__sHeight = 20
self.__sExtra = 8
self.__controlsOffset = 5
self.__isDefaultPen = False
self.__pens = {
0: EDraw.EColor.DefaultLeaveHoverPen,
1: EDraw.EColor.DefaultEnterHoverPen
}
self.setPen(self.__pens[self.__isDefaultPen])
self.__shapeRect = QRectF(0, 0, self.__sWidth, self.__sHeight)
self.__controls = []
def updateGeometry(self):
adjustableControls = [
control for control in self.__controls if control.Adjustable
]
if len(adjustableControls):
fixedControlsBounds = self.__name.boundingRect().width()
fixedControlsBounds += sum(
map(int, [
control.boundingRect().width()
for control in self.__controls if not control.Adjustable
]))
adjustableControlsWidth = int(
(self.__sWidth -
fixedControlsBounds)) / len(adjustableControls)
step = self.__name.boundingRect().width()
for control in self.__controls:
if control.Adjustable:
control.Width = adjustableControlsWidth - self.__controlsOffset
control.setPos(step, 0.0)
step += control.boundingRect().width() + self.__controlsOffset
self.__shapeRect = QRectF(
0, -(self.__sExtra / 2), self.__sWidth,
max([control.Height
for control in self.__controls]) + self.__sExtra)
@property
def kId(self):
return self.__kId
@property
def Name(self):
return self.__name
@Name.setter
def Name(self, name):
" %s" % self.__name.setPlainText(name)
self.updateGeometry()
@property
def Width(self):
return self.__sWidth
@Width.setter
def Width(self, width):
self.__sWidth = width #- self.__controlsOffset * len( self.__controls )
self.updateGeometry()
@property
def Height(self):
return self.__sHeight
@property
def Controls(self):
return self.__controls
@Controls.setter
def Controls(self, control):
control.setParentItem(self)
self.__controls.append(control)
self.updateGeometry()
def toggleHighlight(self):
if self.__isDefaultPen:
self.__isDefaultPen = False
self.setPen(self.__pens[self.__isDefaultPen])
return
self.__isDefaultPen = True
self.setPen(self.__pens[self.__isDefaultPen])
def hoverEnterEvent(self, mouseEvent):
QGraphicsPolygonItem.hoverEnterEvent(self, mouseEvent)
self.toggleHighlight()
def hoverLeaveEvent(self, mouseEvent):
QGraphicsPolygonItem.hoverLeaveEvent(self, mouseEvent)
self.toggleHighlight()
def shape(self):
return QGraphicsItem.shape(self)
def boundingRect(self):
return self.__shapeRect
def paint(self, painter, option, widget=None):
painter.setPen(self.pen())
painter.setBrush(
EDraw.EColor.LinearGradient(self.boundingRect(), Qt.darkGray))
painter.drawPolygon(QPolygonF(self.boundingRect()))
painter.setPen(Qt.lightGray)
r = QRectF(0.0, -(self.__sExtra / 2),
self.__name.boundingRect().width(),
self.boundingRect().height())
painter.drawText(r, Qt.AlignRight | Qt.AlignCenter,
"%s: " % self.__name.toPlainText())
class LinkItem(QGraphicsObject):
"""
A Link item in the canvas that connects two :class:`.NodeItem`\s in the
canvas.
The link curve connects two `Anchor` items (see :func:`setSourceItem`
and :func:`setSinkItem`). Once the anchors are set the curve
automatically adjusts its end points whenever the anchors move.
An optional source/sink text item can be displayed above the curve's
central point (:func:`setSourceName`, :func:`setSinkName`)
"""
#: Z value of the item
Z_VALUE = 0
def __init__(self, *args):
QGraphicsObject.__init__(self, *args)
self.setFlag(QGraphicsItem.ItemHasNoContents, True)
self.setAcceptedMouseButtons(Qt.RightButton | Qt.LeftButton)
self.setAcceptHoverEvents(True)
self.setZValue(self.Z_VALUE)
self.sourceItem = None
self.sourceAnchor = None
self.sinkItem = None
self.sinkAnchor = None
self.curveItem = LinkCurveItem(self)
self.sourceIndicator = LinkAnchorIndicator(self)
self.sinkIndicator = LinkAnchorIndicator(self)
self.sourceIndicator.hide()
self.sinkIndicator.hide()
self.linkTextItem = QGraphicsTextItem(self)
self.__sourceName = ""
self.__sinkName = ""
self.__dynamic = False
self.__dynamicEnabled = False
self.hover = False
def setSourceItem(self, item, anchor=None):
"""
Set the source `item` (:class:`.NodeItem`). Use `anchor`
(:class:`.AnchorPoint`) as the curve start point (if ``None`` a new
output anchor will be created using ``item.newOutputAnchor()``).
Setting item to ``None`` and a valid anchor is a valid operation
(for instance while mouse dragging one end of the link).
"""
if item is not None and anchor is not None:
if anchor not in item.outputAnchors():
raise ValueError("Anchor must be belong to the item")
if self.sourceItem != item:
if self.sourceAnchor:
# Remove a previous source item and the corresponding anchor
self.sourceAnchor.scenePositionChanged.disconnect(
self._sourcePosChanged)
if self.sourceItem is not None:
self.sourceItem.removeOutputAnchor(self.sourceAnchor)
self.sourceItem = self.sourceAnchor = None
self.sourceItem = item
if item is not None and anchor is None:
# Create a new output anchor for the item if none is provided.
anchor = item.newOutputAnchor()
# Update the visibility of the start point indicator.
self.sourceIndicator.setVisible(bool(item))
if anchor != self.sourceAnchor:
if self.sourceAnchor is not None:
self.sourceAnchor.scenePositionChanged.disconnect(
self._sourcePosChanged)
self.sourceAnchor = anchor
if self.sourceAnchor is not None:
self.sourceAnchor.scenePositionChanged.connect(
self._sourcePosChanged)
self.__updateCurve()
def setSinkItem(self, item, anchor=None):
"""
Set the sink `item` (:class:`.NodeItem`). Use `anchor`
(:class:`.AnchorPoint`) as the curve end point (if ``None`` a new
input anchor will be created using ``item.newInputAnchor()``).
Setting item to ``None`` and a valid anchor is a valid operation
(for instance while mouse dragging one and of the link).
"""
if item is not None and anchor is not None:
if anchor not in item.inputAnchors():
raise ValueError("Anchor must be belong to the item")
if self.sinkItem != item:
if self.sinkAnchor:
# Remove a previous source item and the corresponding anchor
self.sinkAnchor.scenePositionChanged.disconnect(
self._sinkPosChanged)
if self.sinkItem is not None:
self.sinkItem.removeInputAnchor(self.sinkAnchor)
self.sinkItem = self.sinkAnchor = None
self.sinkItem = item
if item is not None and anchor is None:
# Create a new input anchor for the item if none is provided.
anchor = item.newInputAnchor()
# Update the visibility of the end point indicator.
self.sinkIndicator.setVisible(bool(item))
if self.sinkAnchor != anchor:
if self.sinkAnchor is not None:
self.sinkAnchor.scenePositionChanged.disconnect(
self._sinkPosChanged)
self.sinkAnchor = anchor
if self.sinkAnchor is not None:
self.sinkAnchor.scenePositionChanged.connect(
self._sinkPosChanged)
self.__updateCurve()
def setFont(self, font):
"""
Set the font for the channel names text item.
"""
if font != self.font():
self.linkTextItem.setFont(font)
self.__updateText()
def font(self):
"""
Return the font for the channel names text.
"""
return self.linkTextItem.font()
def setChannelNamesVisible(self, visible):
"""
Set the visibility of the channel name text.
"""
self.linkTextItem.setVisible(visible)
def setSourceName(self, name):
"""
Set the name of the source (used in channel name text).
"""
if self.__sourceName != name:
self.__sourceName = name
self.__updateText()
def sourceName(self):
"""
Return the source name.
"""
return self.__sourceName
def setSinkName(self, name):
"""
Set the name of the sink (used in channel name text).
"""
if self.__sinkName != name:
self.__sinkName = name
self.__updateText()
def sinkName(self):
"""
Return the sink name.
"""
return self.__sinkName
def _sinkPosChanged(self, *arg):
self.__updateCurve()
def _sourcePosChanged(self, *arg):
self.__updateCurve()
def __updateCurve(self):
self.prepareGeometryChange()
if self.sourceAnchor and self.sinkAnchor:
source_pos = self.sourceAnchor.anchorScenePos()
sink_pos = self.sinkAnchor.anchorScenePos()
source_pos = self.curveItem.mapFromScene(source_pos)
sink_pos = self.curveItem.mapFromScene(sink_pos)
# Adaptive offset for the curve control points to avoid a
# cusp when the two points have the same y coordinate
# and are close together
delta = source_pos - sink_pos
dist = math.sqrt(delta.x()**2 + delta.y()**2)
cp_offset = min(dist / 2.0, 60.0)
# TODO: make the curve tangent orthogonal to the anchors path.
path = QPainterPath()
path.moveTo(source_pos)
path.cubicTo(source_pos + QPointF(cp_offset, 0),
sink_pos - QPointF(cp_offset, 0), sink_pos)
self.curveItem.setPath(path)
self.sourceIndicator.setPos(source_pos)
self.sinkIndicator.setPos(sink_pos)
self.__updateText()
else:
self.setHoverState(False)
self.curveItem.setPath(QPainterPath())
def __updateText(self):
self.prepareGeometryChange()
if self.__sourceName or self.__sinkName:
if self.__sourceName != self.__sinkName:
text = u"{0} \u2192 {1}".format(self.__sourceName,
self.__sinkName)
else:
# If the names are the same show only one.
# Is this right? If the sink has two input channels of the
# same type having the name on the link help elucidate
# the scheme.
text = self.__sourceName
else:
text = ""
self.linkTextItem.setPlainText(text)
path = self.curveItem.path()
if not path.isEmpty():
center = path.pointAtPercent(0.5)
angle = path.angleAtPercent(0.5)
brect = self.linkTextItem.boundingRect()
transform = QTransform()
transform.translate(center.x(), center.y())
transform.rotate(-angle)
# Center and move above the curve path.
transform.translate(-brect.width() / 2, -brect.height())
self.linkTextItem.setTransform(transform)
def removeLink(self):
self.setSinkItem(None)
self.setSourceItem(None)
self.__updateCurve()
def setHoverState(self, state):
if self.hover != state:
self.prepareGeometryChange()
self.hover = state
self.sinkIndicator.setHoverState(state)
self.sourceIndicator.setHoverState(state)
self.curveItem.setHoverState(state)
def hoverEnterEvent(self, event):
# Hover enter event happens when the mouse enters any child object
# but we only want to show the 'hovered' shadow when the mouse
# is over the 'curveItem', so we install self as an event filter
# on the LinkCurveItem and listen to its hover events.
self.curveItem.installSceneEventFilter(self)
return QGraphicsObject.hoverEnterEvent(self, event)
def hoverLeaveEvent(self, event):
# Remove the event filter to prevent unnecessary work in
# scene event filter when not needed
self.curveItem.removeSceneEventFilter(self)
return QGraphicsObject.hoverLeaveEvent(self, event)
def sceneEventFilter(self, obj, event):
if obj is self.curveItem:
if event.type() == QEvent.GraphicsSceneHoverEnter:
self.setHoverState(True)
elif event.type() == QEvent.GraphicsSceneHoverLeave:
self.setHoverState(False)
return QGraphicsObject.sceneEventFilter(self, obj, event)
def boundingRect(self):
return self.childrenBoundingRect()
def shape(self):
return self.curveItem.shape()
def setEnabled(self, enabled):
"""
Reimplemented from :class:`QGraphicsObject`
Set link enabled state. When disabled the link is rendered with a
dashed line.
"""
# This getter/setter pair override a property from the base class.
# They should be renamed to e.g. setLinkEnabled/linkEnabled
self.curveItem.setLinkEnabled(enabled)
def isEnabled(self):
return self.curveItem.isLinkEnabled()
def setDynamicEnabled(self, enabled):
"""
Set the link's dynamic enabled state.
If the link is `dynamic` it will be rendered in red/green color
respectively depending on the state of the dynamic enabled state.
"""
if self.__dynamicEnabled != enabled:
self.__dynamicEnabled = enabled
if self.__dynamic:
self.__updatePen()
def isDynamicEnabled(self):
"""
Is the link dynamic enabled.
"""
return self.__dynamicEnabled
def setDynamic(self, dynamic):
"""
Mark the link as dynamic (i.e. it responds to
:func:`setDynamicEnabled`).
"""
if self.__dynamic != dynamic:
self.__dynamic = dynamic
self.__updatePen()
def isDynamic(self):
"""
Is the link dynamic.
"""
return self.__dynamic
def __updatePen(self):
self.prepareGeometryChange()
if self.__dynamic:
if self.__dynamicEnabled:
color = QColor(0, 150, 0, 150)
else:
color = QColor(150, 0, 0, 150)
normal = QPen(QBrush(color), 2.0)
hover = QPen(QBrush(color.darker(120)), 2.1)
else:
normal = QPen(QBrush(QColor("#9CACB4")), 2.0)
hover = QPen(QBrush(QColor("#7D7D7D")), 2.1)
self.curveItem.setCurvePenSet(normal, hover)
