def mouseMoveEvent(self, event):
if event.buttons() & Qt.LeftButton:
downPos = event.buttonDownPos(Qt.LeftButton)
if not self.__tmpLine and self.__dragStartItem and \
(downPos - event.pos()).manhattanLength() > \
QApplication.instance().startDragDistance():
# Start a line drag
line = QGraphicsLineItem(self)
start = self.__dragStartItem.boundingRect().center()
start = self.mapFromItem(self.__dragStartItem, start)
line.setLine(start.x(), start.y(),
event.pos().x(),
event.pos().y())
pen = QPen(Qt.black, 4)
pen.setCapStyle(Qt.RoundCap)
line.setPen(pen)
line.show()
self.__tmpLine = line
if self.__tmpLine:
# Update the temp line
line = self.__tmpLine.line()
line.setP2(event.pos())
self.__tmpLine.setLine(line)
QGraphicsWidget.mouseMoveEvent(self, event)
def mouseMoveEvent(self, event):
if event.buttons() & Qt.LeftButton:
downPos = event.buttonDownPos(Qt.LeftButton)
if not self.__tmpLine and self.__dragStartItem and \
(downPos - event.pos()).manhattanLength() > \
QApplication.instance().startDragDistance():
# Start a line drag
line = QGraphicsLineItem(self)
start = self.__dragStartItem.boundingRect().center()
start = self.mapFromItem(self.__dragStartItem, start)
line.setLine(start.x(), start.y(),
event.pos().x(), event.pos().y())
pen = QPen(Qt.black, 4)
pen.setCapStyle(Qt.RoundCap)
line.setPen(pen)
line.show()
self.__tmpLine = line
if self.__tmpLine:
# Update the temp line
line = self.__tmpLine.line()
line.setP2(event.pos())
self.__tmpLine.setLine(line)
QGraphicsWidget.mouseMoveEvent(self, event)
def update(self):
x1 = self.node1.centerX()
y1 = self.node1.centerY()
x2 = self.node2.centerX()
y2 = self.node2.centerY()
point1 = QPointF(x1,y1)
point2 = QPointF(x2,y2)
line = QLineF(point1, point2)
QGraphicsLineItem.setLine(self,line)
def addLink(self, output, input):
"""
Add a link between `output` (:class:`OutputSignal`) and `input`
(:class:`InputSignal`).
"""
if not compatible_channels(output, input):
return
if output not in self.source.output_channels():
raise ValueError("%r is not an output channel of %r" % \
(output, self.source))
if input not in self.sink.input_channels():
raise ValueError("%r is not an input channel of %r" % \
(input, self.sink))
if input.single:
# Remove existing link if it exists.
for s1, s2, _ in self.__links:
if s2 == input:
self.removeLink(s1, s2)
line = QGraphicsLineItem(self)
source_anchor = self.sourceNodeWidget.anchor(output)
sink_anchor = self.sinkNodeWidget.anchor(input)
source_pos = source_anchor.boundingRect().center()
source_pos = self.mapFromItem(source_anchor, source_pos)
sink_pos = sink_anchor.boundingRect().center()
sink_pos = self.mapFromItem(sink_anchor, sink_pos)
line.setLine(source_pos.x(), source_pos.y(),
sink_pos.x(), sink_pos.y())
pen = QPen(Qt.black, 4)
pen.setCapStyle(Qt.RoundCap)
line.setPen(pen)
self.__links.append(_Link(output, input, line))
def addLink(self, output, input):
"""
Add a link between `output` (:class:`OutputSignal`) and `input`
(:class:`InputSignal`).
"""
if not compatible_channels(output, input):
return
if output not in self.source.output_channels():
raise ValueError("%r is not an output channel of %r" % \
(output, self.source))
if input not in self.sink.input_channels():
raise ValueError("%r is not an input channel of %r" % \
(input, self.sink))
if input.single:
# Remove existing link if it exists.
for s1, s2, _ in self.__links:
if s2 == input:
self.removeLink(s1, s2)
line = QGraphicsLineItem(self)
source_anchor = self.sourceNodeWidget.anchor(output)
sink_anchor = self.sinkNodeWidget.anchor(input)
source_pos = source_anchor.boundingRect().center()
source_pos = self.mapFromItem(source_anchor, source_pos)
sink_pos = sink_anchor.boundingRect().center()
sink_pos = self.mapFromItem(sink_anchor, sink_pos)
line.setLine(source_pos.x(), source_pos.y(), sink_pos.x(),
sink_pos.y())
pen = QPen(Qt.black, 4)
pen.setCapStyle(Qt.RoundCap)
line.setPen(pen)
self.__links.append(_Link(output, input, line))
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 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()
class EScene(QGraphicsScene):
def __init__(self, view=None, parent=None):
QGraphicsScene.__init__(self, parent)
if view is None:
raise AttributeError
self.__view = view
self.__create__()
def __create__(self):
self.__gridSize = 35
self.__isGridActive = True
self.__isAltModifier = False
self.__isControlModifier = False
self.__isNodePressed = False
self.__kDummy = EDummy()
self.__kDummy.setGridSize(self.__gridSize)
self.__kDummy.onPress.connect(self.__onNodePressed)
self.__kDummy.onEditEnd.connect(self.__onDummyEdit)
self.addItem(self.__kDummy)
self.__kSelected = ESceneSelection()
self.addItem(self.__kSelected)
self.__kCutLine = QGraphicsLineItem()
self.__kCutLine.hide()
self.addItem(self.__kCutLine)
self.__nodes = {}
self.__connections = {}
self.__graphHandle = EGraphHandle()
self.__graphHandle.Message.connect(self.__messageFilter)
self.__propEditor = EPropertyEditor()
self.addItem(self.__propEditor)
def __isNode(self, EObject):
return isinstance(EObject, ENode)
def __isEdge(self, EObject):
return isinstance(EObject, EEdge)
def __onNodePressed(self):
if self.__isNode(self.sender()):
self.__graphHandle.process(self.sender().mapFromPoint(self.__kDummy.scenePos()))
return
if not self.__kDummy.isEditMode():
self.__graphHandle.process(self.__kDummy.Id)
def __onDummyEdit(self, line):
if self.__isNode(self.itemAt(line.p1())) and self.__isNode(self.itemAt(line.p2())):
return
self.__kCutLine.setLine(line)
result = []
for item in self.__kCutLine.collidingItems():
if isinstance(item, EEdge):
if self.__kCutLine.collidesWithPath(item.shape()):
result.append(item.Id)
self.__graphHandle.process(result)
def __getDataFromId(self, theId):
handle = self.__graphHandle.getHandleFromId(theId)
if handle:
return self.__nodes[handle].mapFromId(theId)
return None
def __messageFilter(self, message):
if message.match(EGraphHandle.kMessageEditBegin):
self.__kDummy.toggleEditMode()
return
if message.match(EGraphHandle.kMessageEditEnd):
if self.__kDummy.isEditMode():
self.__kDummy.toggleEditMode()
return
if message.match(EGraphHandle.kMessageNodeAdded):
self.addItem(ENode(message.getData()))
return
if message.match(EGraphHandle.kMessageNodeRemoved):
return
if message.match(EGraphHandle.kMessageConnectionMade):
dataOne = self.__getDataFromId(message.getData()[0])
dataTwo = self.__getDataFromId(message.getData()[1])
if dataOne and dataTwo:
conn = EEdge(dataOne, dataTwo, message.getData()[2])
self.__connections[conn.Id] = conn
self.addItem(conn)
headData = conn.Head
tailData = conn.Tail
print 'Result: Connected %s.%s to %s.%s' % (headData[ENode.kGuiAttributeParentName],
headData[ENode.kGuiAttributeLongName],
tailData[ENode.kGuiAttributeParentName],
tailData[ENode.kGuiAttributeLongName])
return
if message.match(EGraphHandle.kMessageConnectionBroke):
if message.getData() in self.__connections.keys():
self.removeItem(self.__connections[message.getData()])
self.__connections.pop(message.getData(), None)
self.update()
#print "Disconnected..."
return
if message.match(EGraphHandle.kMessageUnknown) or message.match(EGraphHandle.kMessageInternalError):
print 'Result: No event <%s>' % message.getData()
if self.__kDummy.isEditMode():
self.__kDummy.toggleEditMode()
self.update()
def build(self, handle):
if not isinstance(handle, EGraphHandle):
raise AttributeError
def addItem(self, QGraphicsItem):
if self.__isNode(QGraphicsItem):
QGraphicsItem.setZValue(1.0)
QGraphicsItem.onPress.connect(self.__onNodePressed)
self.__nodes[QGraphicsItem.Id] = QGraphicsItem
QGraphicsScene.addItem(self, QGraphicsItem)
def cwd(self):
return self.__graphHandle
def ls(self, sl=False):
if sl:
return self.__kSelected
return self.__nodes.values()
def drawBackground(self, painter, rect):
self.update()
if self.__isGridActive:
painter.setPen(Qt.NoPen)
painter.fillRect(rect, Qt.lightGray)
left = int(rect.left()) - (int(rect.left()) % self.__gridSize)
top = int(rect.top()) - (int(rect.top()) % self.__gridSize)
lines = []
right = int(rect.right())
bottom = int(rect.bottom())
for x in range(left, right, self.__gridSize):
lines.append(QLineF(x, rect.top(), x, rect.bottom()))
for y in range(top, bottom, self.__gridSize):
lines.append(QLineF(rect.left(), y, rect.right(), y))
painter.setPen(QPen(Qt.gray, 1, Qt.SolidLine))
painter.drawLines(lines)
return
painter.fillRect(rect, Qt.lightGray)
def mouseMoveEvent(self, mouseEvent):
QGraphicsScene.mouseMoveEvent(self, mouseEvent)
self.__kDummy.setPos(mouseEvent.scenePos())
self.update()
def mousePressEvent(self, mouseEvent):
QGraphicsScene.mousePressEvent(self, mouseEvent)
item = self.itemAt(mouseEvent.scenePos())
if self.__isControlModifier:
return
if self.__isNode(item):
#print item.Properties
self.__kSelected.Item = item
self.__propEditor.rebuild(self.__kSelected.Item.Handle.Name, self.__kSelected.Item.Handle.lsProperties())
elif isinstance(item, EDummy):
self.__kSelected.Item = None
self.__propEditor.rebuild("", [])
if mouseEvent.button() == Qt.RightButton:
if self.__isNode(self.itemAt(mouseEvent.scenePos())):
self.__isNodePressed = True
return
self.__kDummy.toggleEditMode()
def mouseReleaseEvent(self, mouseEvent):
if mouseEvent.button() == Qt.RightButton:
if self.__isNodePressed:
self.__isNodePressed = False
return
self.__kDummy.toggleEditMode()
self.update()
QGraphicsScene.mouseReleaseEvent(self, mouseEvent)
def keyPressEvent(self, keyEvent):
QGraphicsScene.keyPressEvent(self, keyEvent)
if keyEvent.key() == Qt.Key_Control:
self.__view.setDragMode(QGraphicsView.ScrollHandDrag)
self.__isControlModifier = True
if keyEvent.key() == Qt.Key_Alt:
self.__isAltModifier = True
self.__previousSelectedNode = None
if keyEvent.key() == 88:
self.__kDummy.setSnapMode(True)
def keyReleaseEvent(self, keyEvent):
QGraphicsScene.keyReleaseEvent(self, keyEvent)
if keyEvent.key() == Qt.Key_Control:
self.__view.setDragMode(QGraphicsView.NoDrag)
self.__isControlModifier = False
if keyEvent.key() == Qt.Key_Alt:
self.__isAltModifier = False
self.__previousSelectedNode = None
if keyEvent.key() == 88:
self.__kDummy.setSnapMode(False)
