class EdgeItem(GraphItem):
EDGE_PEN_WIDTH = 0.5
def __init__(self,
spline,
label,
label_center,
from_node,
to_node,
parent=None,
**kwargs):
super(EdgeItem, self).__init__(parent, **kwargs)
self._edge_pen_width = kwargs.get('edge_pen_width',
self.EDGE_PEN_WIDTH)
self.from_node = from_node
self.from_node.add_outgoing_edge(self)
self.to_node = to_node
self.to_node.add_incoming_edge(self)
self._brush = QBrush(self._color)
self._label_pen = QPen()
self._label_pen.setColor(self._color)
self._label_pen.setJoinStyle(Qt.RoundJoin)
self._label_pen.setWidthF(self._label_pen_width)
self._edge_pen = QPen()
self._edge_pen.setColor(self._color)
self._edge_pen.setWidthF(self._edge_pen_width)
self._sibling_edges = set()
self._label = None
if label is not None:
self._label = QGraphicsSimpleTextItem(label)
font = self._label.font()
font.setPointSize(8)
self._label.setFont(font)
label_rect = self._label.boundingRect()
label_rect.moveCenter(label_center)
self._label.setPos(label_rect.x(), label_rect.y())
# spline specification according to http://www.graphviz.org/doc/info/attrs.html#k:splineType
coordinates = spline.split(' ')
# extract optional end_point
end_point = None
if coordinates[0].startswith('e,'):
parts = coordinates.pop(0)[2:].split(',')
end_point = QPointF(float(parts[0]), -float(parts[1]))
# extract optional start_point
if coordinates[0].startswith('s,'):
parts = coordinates.pop(0).split(',')
# first point
parts = coordinates.pop(0).split(',')
point = QPointF(float(parts[0]), -float(parts[1]))
path = QPainterPath(point)
while len(coordinates) > 2:
# extract triple of points for a cubic spline
parts = coordinates.pop(0).split(',')
point1 = QPointF(float(parts[0]), -float(parts[1]))
parts = coordinates.pop(0).split(',')
point2 = QPointF(float(parts[0]), -float(parts[1]))
parts = coordinates.pop(0).split(',')
point3 = QPointF(float(parts[0]), -float(parts[1]))
path.cubicTo(point1, point2, point3)
self._arrow = None
if end_point is not None:
# draw arrow
self._arrow = QGraphicsPolygonItem()
polygon = QPolygonF()
polygon.append(point3)
offset = QPointF(end_point - point3)
corner1 = QPointF(-offset.y(), offset.x()) * 0.35
corner2 = QPointF(offset.y(), -offset.x()) * 0.35
polygon.append(point3 + corner1)
polygon.append(end_point)
polygon.append(point3 + corner2)
self._arrow.setPolygon(polygon)
self._path = QGraphicsPathItem()
self._path.setPath(path)
self.addToGroup(self._path)
self._brush.setColor(self._color)
self._edge_pen.setColor(self._color)
self._label_pen.setColor(self._color)
self._path.setPen(self._edge_pen)
if self._arrow is not None:
self._arrow.setBrush(self._brush)
self._arrow.setPen(self._edge_pen)
if self._label is not None:
self._label.setBrush(self._brush)
self._label.setPen(self._label_pen)
def add_to_scene(self, scene):
scene.addItem(self)
if self._label is not None:
scene.addItem(self._label)
if self._arrow is not None:
scene.addItem(self._arrow)
def setToolTip(self, tool_tip):
super(EdgeItem, self).setToolTip(tool_tip)
if self._label is not None:
self._label.setToolTip(tool_tip)
if self._arrow is not None:
self._arrow.setToolTip(tool_tip)
def add_sibling_edge(self, edge):
self._sibling_edges.add(edge)
def set_color(self, color=None):
if color is None:
color = self._color
self._brush.setColor(color)
self._edge_pen.setColor(color)
self._label_pen.setColor(color)
self._path.setPen(self._edge_pen)
if self._arrow is not None:
self._arrow.setBrush(self._brush)
self._arrow.setPen(self._edge_pen)
if self._label is not None:
self._label.setBrush(self._brush)
self._label.setPen(self._label_pen)
class NodeItem(GraphItem):
def __init__(self,
bounding_box,
shape,
label,
label_pos=None,
url=None,
parent=None,
**kwargs):
super(NodeItem, self).__init__(parent, **kwargs)
self.url = url
self._incoming_edges = set()
self._outgoing_edges = set()
self._brush = QBrush(self._color)
self._label_pen = QPen()
self._label_pen.setColor(self._color)
self._label_pen.setJoinStyle(Qt.RoundJoin)
self._label_pen.setWidthF(self._label_pen_width)
if self._pen_width == 0.0:
self._graphics_item_pen = QPen(Qt.NoPen)
else:
self._graphics_item_pen = QPen(self._label_pen)
self._graphics_item_pen.setWidthF(self._pen_width)
self._graphics_item = ShapeFactory.create(shape, bounding_box)
if ShapeFactory.message is not None:
print ShapeFactory.message
self.addToGroup(self._graphics_item)
if not shape == 'point':
self._label = QGraphicsSimpleTextItem(label)
label_rectangle = self._label.boundingRect()
if label_pos is None:
label_rectangle.moveCenter(bounding_box.center())
else:
label_rectangle.moveCenter(label_pos)
self._label.setPos(label_rectangle.x(), label_rectangle.y())
self.addToGroup(self._label)
else:
self._graphics_item.setBrush(self._color)
self._label = None
self._brush.setColor(self._color)
self._graphics_item_pen.setColor(self._color)
self._label_pen.setColor(self._color)
self._graphics_item.setPen(self._graphics_item_pen)
if self._label is not None:
self._label.setBrush(self._brush)
self._label.setPen(self._label_pen)
def add_incoming_edge(self, edge):
self._incoming_edges.add(edge)
def add_outgoing_edge(self, edge):
self._outgoing_edges.add(edge)
def set_color(self, color=None):
if color is None:
color = self._color
self._brush.setColor(color)
self._graphics_item_pen.setColor(color)
self._label_pen.setColor(color)
self._graphics_item.setPen(self._graphics_item_pen)
if self._label is not None:
self._label.setBrush(self._brush)
self._label.setPen(self._label_pen)
class DmgHtmlNodeItem(GraphItem):
HIGHLIGHT_LEVEL = 1
HOVERED_COLOR = QColor(250, 0, 0)
HIGHLIGHTED_COLOR = QColor(100, 100, 100)
HIGHLIGHTED_PEN_WIDTH = 2.0
HIGHLIGHTED_LABEL_PEN_WIDTH = 1.0
def __init__(self,
bounding_box,
shape,
label,
label_pos=None,
url=None,
parent=None,
**kwargs):
super(DmgHtmlNodeItem, self).__init__(parent, **kwargs)
self.url = url
self._incoming_edges = set()
self._outgoing_edges = set()
self._brush = QBrush(self._color)
self._label_pen = QPen()
self._label_pen.setColor(self._color)
self._label_pen.setJoinStyle(Qt.RoundJoin)
self._label_pen.setWidthF(self._label_pen_width)
self._graphics_item_pen = QPen(self._label_pen)
self._graphics_item_pen.setWidthF(self._pen_width)
self._label = QGraphicsTextItem()
self._label.setHtml(label)
label_rectangle = self._label.boundingRect()
if label_pos is None:
label_rectangle.moveCenter(bounding_box.center())
else:
label_rectangle.moveCenter(label_pos)
self._label.setPos(label_rectangle.x(), label_rectangle.y())
self.addToGroup(self._label)
self._graphics_item = ShapeFactory.create(shape, bounding_box)
if ShapeFactory.message is not None:
print ShapeFactory.message
self.addToGroup(self._graphics_item)
self._brush.setColor(self._color)
self._graphics_item_pen.setColor(self._color)
self._label_pen.setColor(self._color)
self._graphics_item.setPen(self._graphics_item_pen)
self._highlight_level = kwargs.get('highlight_level',
self.HIGHLIGHT_LEVEL)
self._hovered_color = kwargs.get('hovered_color', self.HOVERED_COLOR)
self._highlighted_color = kwargs.get('highlighted_color',
self.HIGHLIGHTED_COLOR)
self._highlighted_pen_width = kwargs.get('highlighted_pen_width',
self.HIGHLIGHTED_PEN_WIDTH)
self._highlighted_label_pen_width = kwargs.get(
'highlighted_label_pen_width', self.HIGHLIGHTED_LABEL_PEN_WIDTH)
self.hover_shape = None
self.setAcceptHoverEvents(True)
def add_incoming_edge(self, edge):
self._incoming_edges.add(edge)
def add_outgoing_edge(self, edge):
self._outgoing_edges.add(edge)
def set_color(self, color=None):
if color is None:
color = self._color
self._brush.setColor(color)
self._graphics_item_pen.setColor(color)
self._label.setDefaultTextColor(color)
self._graphics_item.setPen(self._graphics_item_pen)
def set_hover_shape(self, shape):
self.hover_shape = shape
def shape(self):
if self.hover_shape is not None:
path = QPainterPath()
path.addRect(self.hover_shape)
return path
return super(GraphItem, self).shape()
def hoverEnterEvent(self, event):
self.set_color(self._highlighted_color)
self._highlight_connections()
def hoverLeaveEvent(self, event):
self.set_color()
self._highlight_connections(False)
def _highlight_connections(self, highlighted=True):
if highlighted:
if self._highlight_level > 1:
cyclic_edges = self._incoming_edges.intersection(
self._outgoing_edges)
# incoming edges in blue
incoming_nodes = set()
for incoming_edge in self._incoming_edges.difference(
cyclic_edges):
incoming_edge.set_color(self.COLOR_BLUE)
if incoming_edge.from_node != self:
incoming_nodes.add(incoming_edge.from_node)
# outgoing edges in green
outgoing_nodes = set()
for outgoing_edge in self._outgoing_edges.difference(
cyclic_edges):
outgoing_edge.set_color(self.COLOR_GREEN)
if outgoing_edge.to_node != self:
outgoing_nodes.add(outgoing_edge.to_node)
# incoming/outgoing edges in teal
for edge in cyclic_edges:
edge.set_color(self.COLOR_TEAL)
if self._highlight_level > 2:
cyclic_nodes = incoming_nodes.intersection(outgoing_nodes)
# incoming nodes in blue
for incoming_node in incoming_nodes.difference(
cyclic_nodes):
incoming_node.set_color(self.COLOR_BLUE)
# outgoing nodes in green
for outgoing_node in outgoing_nodes.difference(
cyclic_nodes):
outgoing_node.set_color(self.COLOR_GREEN)
# incoming/outgoing nodes in teal
for node in cyclic_nodes:
node.set_color(self.COLOR_TEAL)
else:
if self._highlight_level > 1:
for incoming_edge in self._incoming_edges:
incoming_edge.set_color()
if self.highlight_level > 2 and incoming_edge.from_node != self:
incoming_edge.from_node.set_color()
for outgoing_edge in self._outgoing_edges:
outgoing_edge.set_color()
if self.highlight_level > 2 and outgoing_edge.to_node != self:
outgoing_edge.to_node.set_color()
def highlight(self, highlighted=True):
if highlighted:
self._graphics_item_pen.setWidthF(self._highlighted_pen_width)
else:
self._graphics_item_pen.setWidthF(self._pen_width)
self._graphics_item.setPen(self._graphics_item_pen)
class NodeItem(GraphItem):
def __init__(self, bounding_box, shape, label, label_pos=None, url=None, parent=None, **kwargs):
super(NodeItem, self).__init__(parent, **kwargs)
self.url = url
self._incoming_edges = set()
self._outgoing_edges = set()
self._brush = QBrush(self._color)
self._label_pen = QPen()
self._label_pen.setColor(self._color)
self._label_pen.setJoinStyle(Qt.RoundJoin)
self._label_pen.setWidthF(self._label_pen_width)
if self._pen_width == 0.0:
self._graphics_item_pen = QPen(Qt.NoPen)
else:
self._graphics_item_pen = QPen(self._label_pen)
self._graphics_item_pen.setWidthF(self._pen_width)
self._graphics_item = ShapeFactory.create(shape, bounding_box)
if ShapeFactory.message is not None:
print ShapeFactory.message
self.addToGroup(self._graphics_item)
if not shape == 'point':
self._label = QGraphicsSimpleTextItem(label)
label_rectangle = self._label.boundingRect()
if label_pos is None:
label_rectangle.moveCenter(bounding_box.center())
else:
label_rectangle.moveCenter(label_pos)
self._label.setPos(label_rectangle.x(), label_rectangle.y())
self.addToGroup(self._label)
else:
self._graphics_item.setBrush(self._color)
self._label = None
self._brush.setColor(self._color)
self._graphics_item_pen.setColor(self._color)
self._label_pen.setColor(self._color)
self._graphics_item.setPen(self._graphics_item_pen)
if self._label is not None:
self._label.setBrush(self._brush)
self._label.setPen(self._label_pen)
def add_incoming_edge(self, edge):
self._incoming_edges.add(edge)
def add_outgoing_edge(self, edge):
self._outgoing_edges.add(edge)
def set_color(self, color=None):
if color is None:
color = self._color
self._brush.setColor(color)
self._graphics_item_pen.setColor(color)
self._label_pen.setColor(color)
self._graphics_item.setPen(self._graphics_item_pen)
if self._label is not None:
self._label.setBrush(self._brush)
self._label.setPen(self._label_pen)
class EdgeItem(GraphItem):
EDGE_PEN_WIDTH = 0.5
def __init__(self, spline, label, label_center, from_node, to_node, parent=None, **kwargs):
super(EdgeItem, self).__init__(parent, **kwargs)
self._edge_pen_width = kwargs.get('edge_pen_width', self.EDGE_PEN_WIDTH)
self.from_node = from_node
self.from_node.add_outgoing_edge(self)
self.to_node = to_node
self.to_node.add_incoming_edge(self)
self._brush = QBrush(self._color)
self._label_pen = QPen()
self._label_pen.setColor(self._color)
self._label_pen.setJoinStyle(Qt.RoundJoin)
self._label_pen.setWidthF(self._label_pen_width)
self._edge_pen = QPen()
self._edge_pen.setColor(self._color)
self._edge_pen.setWidthF(self._edge_pen_width)
self._sibling_edges = set()
self._label = None
if label is not None:
self._label = QGraphicsSimpleTextItem(label)
font = self._label.font()
font.setPointSize(8)
self._label.setFont(font)
label_rect = self._label.boundingRect()
label_rect.moveCenter(label_center)
self._label.setPos(label_rect.x(), label_rect.y())
# spline specification according to http://www.graphviz.org/doc/info/attrs.html#k:splineType
coordinates = spline.split(' ')
# extract optional end_point
end_point = None
if coordinates[0].startswith('e,'):
parts = coordinates.pop(0)[2:].split(',')
end_point = QPointF(float(parts[0]), -float(parts[1]))
# extract optional start_point
if coordinates[0].startswith('s,'):
parts = coordinates.pop(0).split(',')
# first point
parts = coordinates.pop(0).split(',')
point = QPointF(float(parts[0]), -float(parts[1]))
path = QPainterPath(point)
while len(coordinates) > 2:
# extract triple of points for a cubic spline
parts = coordinates.pop(0).split(',')
point1 = QPointF(float(parts[0]), -float(parts[1]))
parts = coordinates.pop(0).split(',')
point2 = QPointF(float(parts[0]), -float(parts[1]))
parts = coordinates.pop(0).split(',')
point3 = QPointF(float(parts[0]), -float(parts[1]))
path.cubicTo(point1, point2, point3)
self._arrow = None
if end_point is not None:
# draw arrow
self._arrow = QGraphicsPolygonItem()
polygon = QPolygonF()
polygon.append(point3)
offset = QPointF(end_point - point3)
corner1 = QPointF(-offset.y(), offset.x()) * 0.35
corner2 = QPointF(offset.y(), -offset.x()) * 0.35
polygon.append(point3 + corner1)
polygon.append(end_point)
polygon.append(point3 + corner2)
self._arrow.setPolygon(polygon)
self._path = QGraphicsPathItem()
self._path.setPath(path)
self.addToGroup(self._path)
self._brush.setColor(self._color)
self._edge_pen.setColor(self._color)
self._label_pen.setColor(self._color)
self._path.setPen(self._edge_pen)
if self._arrow is not None:
self._arrow.setBrush(self._brush)
self._arrow.setPen(self._edge_pen)
if self._label is not None:
self._label.setBrush(self._brush)
self._label.setPen(self._label_pen)
def add_to_scene(self, scene):
scene.addItem(self)
if self._label is not None:
scene.addItem(self._label)
if self._arrow is not None:
scene.addItem(self._arrow)
def setToolTip(self, tool_tip):
super(EdgeItem, self).setToolTip(tool_tip)
if self._label is not None:
self._label.setToolTip(tool_tip)
if self._arrow is not None:
self._arrow.setToolTip(tool_tip)
def add_sibling_edge(self, edge):
self._sibling_edges.add(edge)
def set_color(self, color=None):
if color is None:
color = self._color
self._brush.setColor(color)
self._edge_pen.setColor(color)
self._label_pen.setColor(color)
self._path.setPen(self._edge_pen)
if self._arrow is not None:
self._arrow.setBrush(self._brush)
self._arrow.setPen(self._edge_pen)
if self._label is not None:
self._label.setBrush(self._brush)
self._label.setPen(self._label_pen)
class DmgHtmlNodeItem(GraphItem):
HIGHLIGHT_LEVEL = 1
HOVERED_COLOR = QColor(250, 0, 0)
HIGHLIGHTED_COLOR = QColor(100, 100, 100)
HIGHLIGHTED_PEN_WIDTH = 2.0
HIGHLIGHTED_LABEL_PEN_WIDTH = 1.0
def __init__(self, bounding_box, shape, label, label_pos=None, url=None, parent=None, **kwargs):
super(DmgHtmlNodeItem, self).__init__(parent, **kwargs)
self.url = url
self._incoming_edges = set()
self._outgoing_edges = set()
self._brush = QBrush(self._color)
self._label_pen = QPen()
self._label_pen.setColor(self._color)
self._label_pen.setJoinStyle(Qt.RoundJoin)
self._label_pen.setWidthF(self._label_pen_width)
self._graphics_item_pen = QPen(self._label_pen)
self._graphics_item_pen.setWidthF(self._pen_width)
self._label = QGraphicsTextItem()
self._label.setHtml(label)
label_rectangle = self._label.boundingRect()
if label_pos is None:
label_rectangle.moveCenter(bounding_box.center())
else:
label_rectangle.moveCenter(label_pos)
self._label.setPos(label_rectangle.x(), label_rectangle.y())
self.addToGroup(self._label)
self._graphics_item = ShapeFactory.create(shape, bounding_box)
if ShapeFactory.message is not None:
print ShapeFactory.message
self.addToGroup(self._graphics_item)
self._brush.setColor(self._color)
self._graphics_item_pen.setColor(self._color)
self._label_pen.setColor(self._color)
self._graphics_item.setPen(self._graphics_item_pen)
self._highlight_level = kwargs.get('highlight_level', self.HIGHLIGHT_LEVEL)
self._hovered_color = kwargs.get('hovered_color', self.HOVERED_COLOR)
self._highlighted_color = kwargs.get('highlighted_color', self.HIGHLIGHTED_COLOR)
self._highlighted_pen_width = kwargs.get('highlighted_pen_width', self.HIGHLIGHTED_PEN_WIDTH)
self._highlighted_label_pen_width = kwargs.get('highlighted_label_pen_width', self.HIGHLIGHTED_LABEL_PEN_WIDTH)
self.hover_shape = None
self.setAcceptHoverEvents(True)
def add_incoming_edge(self, edge):
self._incoming_edges.add(edge)
def add_outgoing_edge(self, edge):
self._outgoing_edges.add(edge)
def set_color(self, color=None):
if color is None:
color = self._color
self._brush.setColor(color)
self._graphics_item_pen.setColor(color)
self._label.setDefaultTextColor(color)
self._graphics_item.setPen(self._graphics_item_pen)
def set_hover_shape(self, shape):
self.hover_shape = shape
def shape(self):
if self.hover_shape is not None:
path = QPainterPath()
path.addRect(self.hover_shape)
return path
return super(GraphItem, self).shape()
def hoverEnterEvent(self, event):
self.set_color(self._highlighted_color)
self._highlight_connections()
def hoverLeaveEvent(self, event):
self.set_color()
self._highlight_connections(False)
def _highlight_connections(self, highlighted=True):
if highlighted:
if self._highlight_level > 1:
cyclic_edges = self._incoming_edges.intersection(self._outgoing_edges)
# incoming edges in blue
incoming_nodes = set()
for incoming_edge in self._incoming_edges.difference(cyclic_edges):
incoming_edge.set_color(self.COLOR_BLUE)
if incoming_edge.from_node != self:
incoming_nodes.add(incoming_edge.from_node)
# outgoing edges in green
outgoing_nodes = set()
for outgoing_edge in self._outgoing_edges.difference(cyclic_edges):
outgoing_edge.set_color(self.COLOR_GREEN)
if outgoing_edge.to_node != self:
outgoing_nodes.add(outgoing_edge.to_node)
# incoming/outgoing edges in teal
for edge in cyclic_edges:
edge.set_color(self.COLOR_TEAL)
if self._highlight_level > 2:
cyclic_nodes = incoming_nodes.intersection(outgoing_nodes)
# incoming nodes in blue
for incoming_node in incoming_nodes.difference(cyclic_nodes):
incoming_node.set_color(self.COLOR_BLUE)
# outgoing nodes in green
for outgoing_node in outgoing_nodes.difference(cyclic_nodes):
outgoing_node.set_color(self.COLOR_GREEN)
# incoming/outgoing nodes in teal
for node in cyclic_nodes:
node.set_color(self.COLOR_TEAL)
else:
if self._highlight_level > 1:
for incoming_edge in self._incoming_edges:
incoming_edge.set_color()
if self.highlight_level > 2 and incoming_edge.from_node != self:
incoming_edge.from_node.set_color()
for outgoing_edge in self._outgoing_edges:
outgoing_edge.set_color()
if self.highlight_level > 2 and outgoing_edge.to_node != self:
outgoing_edge.to_node.set_color()
def highlight(self, highlighted=True):
if highlighted:
self._graphics_item_pen.setWidthF(self._highlighted_pen_width)
else:
self._graphics_item_pen.setWidthF(self._pen_width)
self._graphics_item.setPen(self._graphics_item_pen)
