34 lines
1.1 KiB
Python
34 lines
1.1 KiB
Python
from contextlib import nullcontext
|
|
|
|
from .backend_cairo import FigureCanvasCairo
|
|
from .backend_gtk4 import GLib, Gtk, FigureCanvasGTK4, _BackendGTK4
|
|
|
|
|
|
class FigureCanvasGTK4Cairo(FigureCanvasCairo, FigureCanvasGTK4):
|
|
_context_is_scaled = True
|
|
|
|
def on_draw_event(self, widget, ctx):
|
|
if self._idle_draw_id:
|
|
GLib.source_remove(self._idle_draw_id)
|
|
self._idle_draw_id = 0
|
|
self.draw()
|
|
|
|
with (self.toolbar._wait_cursor_for_draw_cm() if self.toolbar
|
|
else nullcontext()):
|
|
self._renderer.set_context(ctx)
|
|
scale = self.device_pixel_ratio
|
|
# Scale physical drawing to logical size.
|
|
ctx.scale(1 / scale, 1 / scale)
|
|
allocation = self.get_allocation()
|
|
Gtk.render_background(
|
|
self.get_style_context(), ctx,
|
|
allocation.x, allocation.y,
|
|
allocation.width, allocation.height)
|
|
self._renderer.dpi = self.figure.dpi
|
|
self.figure.draw(self._renderer)
|
|
|
|
|
|
@_BackendGTK4.export
|
|
class _BackendGTK4Cairo(_BackendGTK4):
|
|
FigureCanvas = FigureCanvasGTK4Cairo
|