41 lines
1.3 KiB
Python
41 lines
1.3 KiB
Python
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try:
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from contextlib import nullcontext
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except ImportError:
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from contextlib import ExitStack as nullcontext # Py 3.6.
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from . import backend_cairo, backend_gtk3
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from .backend_gtk3 import Gtk, _BackendGTK3
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from matplotlib.backend_bases import cursors
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class RendererGTK3Cairo(backend_cairo.RendererCairo):
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def set_context(self, ctx):
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self.gc.ctx = backend_cairo._to_context(ctx)
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class FigureCanvasGTK3Cairo(backend_gtk3.FigureCanvasGTK3,
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backend_cairo.FigureCanvasCairo):
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def __init__(self, figure):
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super().__init__(figure)
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self._renderer = RendererGTK3Cairo(self.figure.dpi)
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def on_draw_event(self, widget, ctx):
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"""GtkDrawable draw event."""
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with (self.toolbar._wait_cursor_for_draw_cm() if self.toolbar
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else nullcontext()):
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self._renderer.set_context(ctx)
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allocation = self.get_allocation()
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Gtk.render_background(
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self.get_style_context(), ctx,
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allocation.x, allocation.y,
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allocation.width, allocation.height)
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self._renderer.set_width_height(
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allocation.width, allocation.height)
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self.figure.draw(self._renderer)
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@_BackendGTK3.export
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class _BackendGTK3Cairo(_BackendGTK3):
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FigureCanvas = FigureCanvasGTK3Cairo
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