def draw_hover(self, bounding_box: Rectangle,
context: DrawContext) -> None:
"""Add dashed line on bottom of swimlanes when hovered."""
if context.hovered or context.dropzone:
cr = context.cairo
with cairo_state(cr):
cr.set_dash((1.0, 5.0), 0)
cr.set_line_width(1.0)
cr.rectangle(0, 0, bounding_box.width, bounding_box.height)
draw_highlight(context)
cr.stroke()
def draw_interaction(box, context, bounding_box):
cr = context.cairo
cr.rectangle(0, 0, bounding_box.width, bounding_box.height)
draw_highlight(context)
# draw pentagon
w, h = box.sizes[0]
h2 = h / 2.0
cr.move_to(0, h)
cr.line_to(w - 4, h)
cr.line_to(w, h2)
cr.line_to(w, 0)
cr.stroke()
def draw_initial_node(_box, context, _bounding_box):
cr = context.cairo
stroke = context.style["color"]
if stroke:
cr.set_source_rgba(*stroke)
r = 10
d = r * 2
path_ellipse(cr, r, r, d, d)
draw_highlight(context)
cr.set_line_width(0.01)
cr.fill()
def draw_initial_pseudostate(box, context, bounding_box):
"""Draw initial pseudostate symbol."""
cr = context.cairo
stroke = context.style["color"]
if stroke:
cr.set_source_rgba(*stroke)
r = 10
d = r * 2
path_ellipse(cr, r, r, d, d)
draw_highlight(context)
cr.set_line_width(0.01)
cr.fill()
def draw_outline(self, bounding_box: Rectangle,
context: DrawContext) -> None:
"""Draw the outline and header of the swimlanes."""
cr = context.cairo
cr.move_to(0, bounding_box.height)
cr.line_to(0, 0)
cr.line_to(bounding_box.width, 0)
cr.line_to(bounding_box.width, bounding_box.height)
draw_highlight(context)
cr.move_to(0, bounding_box.height)
cr.line_to(0, HEADER_HEIGHT)
cr.line_to(0 + bounding_box.width, HEADER_HEIGHT)
cr.line_to(0 + bounding_box.width, bounding_box.height)
def draw_fork_node(self, _box, context, _bounding_box):
"""
Draw vertical line - symbol of fork and join nodes. Join
specification is also drawn above the item.
"""
cr = context.cairo
cr.set_line_width(6)
stroke = context.style.get("color")
if stroke:
cr.set_source_rgba(*stroke)
h1, h2 = self._handles
cr.move_to(h1.pos.x, h1.pos.y)
cr.line_to(h2.pos.x, h2.pos.y)
draw_highlight(context)
cr.stroke()
def draw_partition(self, box, context, bounding_box):
"""
By default vertical partition is drawn. It is open on the bottom.
"""
assert self.canvas
cr = context.cairo
cr.set_line_width(box.style("line-width"))
if self.subject and not self.subject.isDimension and self._toplevel:
cr.move_to(0, 0)
cr.line_to(bounding_box.width, 0)
h = self._header_size[1]
# draw outside lines if this item is toplevel partition
if self._toplevel:
cr.move_to(0, bounding_box.height)
cr.line_to(0, h)
cr.line_to(bounding_box.width, h)
cr.line_to(bounding_box.width, bounding_box.height)
if self._subpart:
# header line for all subparitions
hd = h + self._hdmax
cr.move_to(0, hd)
cr.line_to(bounding_box.width, hd)
if self._subpart:
# draw inside lines for all children but last one
dp = 0
for sl in self.canvas.get_children(self)[:-1]:
dp += sl.width
cr.move_to(dp, h)
cr.line_to(dp, bounding_box.height)
cr.stroke()
if context.hovered or context.dropzone:
cr.save()
cr.set_dash((1.0, 5.0), 0)
cr.set_line_width(1.0)
cr.rectangle(0, 0, bounding_box.width, bounding_box.height)
draw_highlight(context)
cr.stroke()
cr.restore()
def draw_node(box, context, bounding_box):
cr = context.cairo
d = 10
w = bounding_box.width
h = bounding_box.height
cr.rectangle(0, 0, w, h)
draw_highlight(context)
cr.move_to(0, 0)
cr.line_to(d, -d)
cr.line_to(w + d, -d)
cr.line_to(w + d, h - d)
cr.line_to(w, h)
cr.move_to(w, 0)
cr.line_to(w + d, -d)
stroke(context)
def draw(self, context):
def draw_line_end(end_handle, second_handle, draw):
pos, p1 = end_handle.pos, second_handle.pos
angle = atan2(p1.y - pos.y, p1.x - pos.x)
cr = context.cairo
cr.save()
try:
cr.translate(*pos)
cr.rotate(angle)
draw(context)
finally:
cr.restore()
style = combined_style(context.style, self.style)
context = replace(context, style=style)
cr = context.cairo
cr.set_line_width(self.line_width)
cr.set_dash(style.get("dash-style", ()), 0)
stroke = style["color"]
if stroke:
cr.set_source_rgba(*stroke)
handles = self._handles
draw_line_end(handles[0], handles[1], self.draw_head)
for h in self._handles[1:-1]:
cr.line_to(*h.pos)
draw_line_end(handles[-1], handles[-2], self.draw_tail)
draw_highlight(context)
cr.stroke()
for shape, rect in (
(self.shape_head, self._shape_head_rect),
(self.shape_middle, self._shape_middle_rect),
(self.shape_tail, self._shape_tail_rect),
):
if shape:
shape.draw(context, rect)
