32 lines
1.0 KiB
Python
32 lines
1.0 KiB
Python
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import sys
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import numpy as np
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from . import _backend_tk
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from .backend_cairo import cairo, FigureCanvasCairo, RendererCairo
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from ._backend_tk import _BackendTk, FigureCanvasTk
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class FigureCanvasTkCairo(FigureCanvasCairo, FigureCanvasTk):
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def __init__(self, *args, **kwargs):
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super(FigureCanvasTkCairo, self).__init__(*args, **kwargs)
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self._renderer = RendererCairo(self.figure.dpi)
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def draw(self):
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width = int(self.figure.bbox.width)
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height = int(self.figure.bbox.height)
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surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, width, height)
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self._renderer.set_ctx_from_surface(surface)
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self._renderer.set_width_height(width, height)
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self.figure.draw(self._renderer)
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buf = np.reshape(surface.get_data(), (height, width, 4))
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_backend_tk.blit(
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self._tkphoto, buf,
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(2, 1, 0, 3) if sys.byteorder == "little" else (1, 2, 3, 0))
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self._master.update_idletasks()
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@_BackendTk.export
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class _BackendTkCairo(_BackendTk):
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FigureCanvas = FigureCanvasTkCairo
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