fr/fr_env/lib/python3.8/site-packages/matplotlib/backends/backend_tkcairo.py

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2021-02-17 12:26:31 +05:30
import sys
import numpy as np
from . import _backend_tk
from .backend_cairo import cairo, FigureCanvasCairo, RendererCairo
from ._backend_tk import _BackendTk, FigureCanvasTk
class FigureCanvasTkCairo(FigureCanvasCairo, FigureCanvasTk):
def __init__(self, *args, **kwargs):
super(FigureCanvasTkCairo, self).__init__(*args, **kwargs)
self._renderer = RendererCairo(self.figure.dpi)
def draw(self):
width = int(self.figure.bbox.width)
height = int(self.figure.bbox.height)
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, width, height)
self._renderer.set_ctx_from_surface(surface)
self._renderer.set_width_height(width, height)
self.figure.draw(self._renderer)
buf = np.reshape(surface.get_data(), (height, width, 4))
_backend_tk.blit(
self._tkphoto, buf,
(2, 1, 0, 3) if sys.byteorder == "little" else (1, 2, 3, 0))
self._master.update_idletasks()
@_BackendTk.export
class _BackendTkCairo(_BackendTk):
FigureCanvas = FigureCanvasTkCairo