def paint(self, context, selected):
view = self.view
item = self.item
cr = context.cairo
h = item.handles()
side_length = get_side_length_of_resize_handle(self.view,
item.parent) / 1.5
for h1, h2 in zip(h[1:-2], h[2:-1]):
p1, p2 = h1.pos, h2.pos
cx = (p1.x + p2.x) / 2
cy = (p1.y + p2.y) / 2
cr.save()
cr.set_line_width(self.view.get_zoom_factor() / 4.)
cr.identity_matrix()
m = Matrix(*view.get_matrix_i2v(item))
cr.set_antialias(ANTIALIAS_NONE)
cr.translate(*m.transform_point(cx, cy))
cr.rectangle(-side_length / 2., -side_length / 2., side_length,
side_length)
cr.set_source_rgba(*get_col_rgba(self.fill_color))
cr.fill_preserve()
cr.set_source_rgba(*get_col_rgba(self.border_color))
cr.set_line_width(1)
cr.stroke()
cr.restore()
def _check_for_resize_handle(self, handle, pos, distance):
side_length_handle = get_side_length_of_resize_handle(
self.view, self.item)
v2i = self.view.get_matrix_v2i(self.item)
side_length_handle = v2i.transform_distance(side_length_handle, 0)[0]
x, y = v2i.transform_point(*pos)
hx, hy = handle.pos
max_center_distance = side_length_handle / 2 + distance
if hx - max_center_distance <= x <= hx + max_center_distance and \
hy - max_center_distance <= y <= hy + max_center_distance:
return self.item, handle
return None, None
def _draw_item(self, item, cairo, area=None):
cairo = gaphas.painter.CairoBoundingBoxContext(cairo)
super(gaphas.painter.BoundingBoxPainter, self)._draw_item(item, cairo)
bounds = cairo.get_bounds()
view = self.view
if isinstance(item, (StateView, NameView)):
i2v = view.get_matrix_i2v(item).transform_point
for index, handle in enumerate(item.handles()):
if index >= 4:
break
side_length = get_side_length_of_resize_handle(view, item)
cx, cy = i2v(*handle.pos)
bounds += (cx - side_length / 2, cy - side_length / 2, side_length, side_length)
elif isinstance(item, ConnectionView):
i2v = view.get_matrix_i2v(item).transform_point
for h in item.handles():
cx, cy = i2v(*h.pos)
bounds += (cx, cy, 1, 1)
bounds.expand(1)
view.set_item_bounding_box(item, bounds)
def _get_handle_side_length(self, item):
return get_side_length_of_resize_handle(self.view, item)