def _on_draw(self, widget, context):
#_logger.debug("Draw: clip_extents=" + str(context.clip_extents()))
#self.get_window().set_debug_updates(True)
if not Gtk.cairo_should_draw_window(context, self.get_window()):
return
clip_rect = Rect.from_extents(*context.clip_extents())
# draw background
decorated = self.draw_background(context)
# On first run quickly overwrite the background only.
# This gives a slightly smoother startup with desktop remnants
# flashing though for a shorter time.
if self._first_draw:
self._first_draw = False
self.queue_draw()
return
if not self.layout:
return
# run through all visible layout items
layer_ids = self.layout.get_layer_ids()
for item in self.layout.iter_visible_items():
if item.layer_id:
# draw layer background
layer_index = layer_ids.index(item.layer_id)
parent = item.parent
if parent and \
layer_index != 0:
rect = parent.get_canvas_rect()
context.rectangle(*rect.inflate(1))
if self.color_scheme:
rgba = self.color_scheme.get_layer_fill_rgba(layer_index)
else:
rgba = [0.5, 0.5, 0.5, 0.9]
context.set_source_rgba(*rgba)
context.fill()
self.draw_dish_key_background(context, 1.0, item.layer_id)
# draw key
if item.is_key() and \
clip_rect.intersects(item.get_canvas_rect()):
item.draw(context)
item.draw_image(context)
item.draw_label(context)
# draw touch handles (enlarged move and resize handles)
if self.touch_handles.active:
corner_radius = config.CORNER_RADIUS if decorated else 0
self.touch_handles.set_corner_radius(corner_radius)
self.touch_handles.draw(context)
def get_damage_rect(self, context):
clip_rect = Rect.from_extents(*context.clip_extents())
# Draw a little more than just the clip_rect.
# Prevents glitches around pressed keys in at least classic theme.
layout = self.get_layout()
if layout:
extra_size = layout.context.scale_log_to_canvas((2.0, 2.0))
else:
extra_size = 0, 0
return clip_rect.inflate(*extra_size)
def get_damage_rect(self, context):
clip_rect = Rect.from_extents(*context.clip_extents())
# Draw a little more than just the clip_rect.
# Prevents glitches around pressed keys in at least classic theme.
layout = self.get_layout()
if layout:
extra_size = layout.context.scale_log_to_canvas((2.0, 2.0))
else:
extra_size = 0, 0
return clip_rect.inflate(*extra_size)
def canvas_to_root_window_rect(window, rect):
"""
Convert rect in canvas coordinates to root window coordinates.
"""
gdk_win = window.get_window()
if gdk_win:
x0, y0 = gdk_win.get_root_coords(rect.x, rect.y)
x1, y1 = gdk_win.get_root_coords(rect.x + rect.w, rect.y + rect.h)
rect = Rect.from_extents(x0, y0, x1, y1)
else:
rect = Rect()
return rect
def draw(self, context):
if self.opacity:
clip_rect = Rect.from_extents(*context.clip_extents())
for handle in self.handles:
rect = handle.get_shadow_rect()
if rect.intersects(clip_rect):
context.save()
context.rectangle(*rect.int())
context.clip()
context.push_group()
handle.draw(context)
context.pop_group_to_source()
context.paint_with_alpha(self.opacity);
context.restore()
def draw(self, context):
if self.opacity:
clip_rect = Rect.from_extents(*context.clip_extents())
for handle in self.handles:
rect = handle.get_shadow_rect()
if rect.intersects(clip_rect):
context.save()
context.rectangle(*rect.int())
context.clip()
context.push_group()
handle.draw(context)
context.pop_group_to_source()
context.paint_with_alpha(self.opacity)
context.restore()