def set_drawing_style(self):
"""Set the drawing style for the diagram based on the active style
sheet."""
assert self.view
assert self.diagram_css
style = self.diagram.style(StyledDiagram(self.diagram, self.view))
bg = style.get("background-color")
self.diagram_css.load_from_data(
f"diagramview {{ background-color: rgba({int(255*bg[0])}, {int(255*bg[1])}, {int(255*bg[2])}, {bg[3]}) }}"
.encode() if bg else "".encode())
sloppiness = style.get("line-style", 0.0)
item_painter = ItemPainter()
view = self.view
if sloppiness:
item_painter = FreeHandPainter(ItemPainter(),
sloppiness=sloppiness)
view.painter = (PainterChain().append(item_painter).append(
HandlePainter()).append(FocusedItemPainter()).append(
ToolPainter()))
view.bounding_box_painter = BoundingBoxPainter(item_painter)
view.queue_draw_refresh()
def new_painter(diagram):
style = diagram.style(StyledDiagram(diagram))
sloppiness = style.get("line-style", 0.0)
if sloppiness:
return FreeHandPainter(ItemPainter(), sloppiness)
else:
return ItemPainter()
def update_painters(self, view, diagram):
style = diagram.style(StyledDiagram(diagram))
sloppiness = style.get("line-style", 0.0)
if sloppiness:
view.painter = FreeHandPainter(ItemPainter(), sloppiness)
else:
view.painter = ItemPainter()
view.bounding_box_painter = BoundingBoxPainter(view.painter)
def test_diagram_has_no_parent(diagram):
node = StyledDiagram(diagram)
assert node.parent() is None