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 view(diagram):
view = GtkView(model=diagram, selection=Selection())
view._qtree.resize((-100, -100, 400, 400))
item_painter = ItemPainter(view.selection)
view.painter = item_painter
view.bounding_box_painter = BoundingBoxPainter(item_painter)
return view
def __init__(self):
self.session = Session(services=self.services)
self.element_factory = self.session.get_service("element_factory")
self.modeling_language = self.session.get_service("modeling_language")
assert len(list(self.element_factory.select())) == 0, list(
self.element_factory.select())
self.diagram = self.element_factory.create(UML.Diagram)
# We need to hook up a view for now, so updates are done instantly
self.view = GtkView(self.diagram, selection=Selection())
self.view.painter = ItemPainter(self.view.selection)
self.view.bounding_box_painter = BoundingBoxPainter(self.view.painter)
assert len(list(self.element_factory.select())) == 1, list(
self.element_factory.select())