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 __init__(self,
highlight_level,
bounding_box,
label,
shape,
color=None,
parent=None,
label_pos=None,
tooltip=None):
super(NodeItem, self).__init__(highlight_level, parent)
self._default_color = self._COLOR_BLACK if color is None else color
self._brush = QBrush(self._default_color)
self._label_pen = QPen()
self._label_pen.setColor(self._default_color)
self._label_pen.setJoinStyle(Qt.RoundJoin)
self._ellipse_pen = QPen(self._label_pen)
self._ellipse_pen.setWidth(1)
self._incoming_edges = set()
self._outgoing_edges = set()
if shape == 'box':
self._graphics_item = QGraphicsRectItem(bounding_box)
else:
self._graphics_item = QGraphicsEllipseItem(bounding_box)
self.addToGroup(self._graphics_item)
self._label = QGraphicsSimpleTextItem(label)
self._label.setFont(GraphItem._LABEL_FONT)
label_rect = self._label.boundingRect()
if label_pos is None:
label_rect.moveCenter(bounding_box.center())
else:
label_rect.moveCenter(label_pos)
self._label.setPos(label_rect.x(), label_rect.y())
self.addToGroup(self._label)
if tooltip is not None:
self.setToolTip(tooltip)
self.set_node_color()
self.setAcceptHoverEvents(True)
self.hovershape = None
def __init__(self,
highlight_level,
spline,
label_center,
label,
from_node,
to_node,
parent=None,
penwidth=1,
edge_color=None,
style='solid'):
super(EdgeItem, self).__init__(highlight_level, parent)
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._default_edge_color = self._COLOR_BLACK
if edge_color is not None:
self._default_edge_color = edge_color
self._default_text_color = self._COLOR_BLACK
self._default_color = self._COLOR_BLACK
self._text_brush = QBrush(self._default_color)
self._shape_brush = QBrush(self._default_color)
if style in ['dashed', 'dotted']:
self._shape_brush = QBrush(Qt.transparent)
self._label_pen = QPen()
self._label_pen.setColor(self._default_text_color)
self._label_pen.setJoinStyle(Qt.RoundJoin)
self._edge_pen = QPen(self._label_pen)
self._edge_pen.setWidth(penwidth)
self._edge_pen.setColor(self._default_edge_color)
self._edge_pen.setStyle(self._qt_pen_styles.get(style, Qt.SolidLine))
self._sibling_edges = set()
self._label = None
if label is not None:
self._label = QGraphicsSimpleTextItem(label)
self._label.setFont(GraphItem._LABEL_FONT)
label_rect = self._label.boundingRect()
label_rect.moveCenter(label_center)
self._label.setPos(label_rect.x(), label_rect.y())
self._label.hoverEnterEvent = self._handle_hoverEnterEvent
self._label.hoverLeaveEvent = self._handle_hoverLeaveEvent
self._label.setAcceptHoverEvents(True)
# 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._arrow.hoverEnterEvent = self._handle_hoverEnterEvent
self._arrow.hoverLeaveEvent = self._handle_hoverLeaveEvent
self._arrow.setAcceptHoverEvents(True)
self._path = QGraphicsPathItem()
self._path.setPath(path)
self.addToGroup(self._path)
self.set_node_color()
self.set_label_color()
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)