49 lines
1.8 KiB
Python
49 lines
1.8 KiB
Python
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import wx
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from .backend_cairo import cairo, FigureCanvasCairo, RendererCairo
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from .backend_wx import (
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_BackendWx, _FigureCanvasWxBase, FigureFrameWx,
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NavigationToolbar2Wx as NavigationToolbar2WxCairo)
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import wx.lib.wxcairo as wxcairo
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class FigureFrameWxCairo(FigureFrameWx):
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def get_canvas(self, fig):
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return FigureCanvasWxCairo(self, -1, fig)
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class FigureCanvasWxCairo(_FigureCanvasWxBase, FigureCanvasCairo):
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"""
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The FigureCanvas contains the figure and does event handling.
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In the wxPython backend, it is derived from wxPanel, and (usually) lives
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inside a frame instantiated by a FigureManagerWx. The parent window
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probably implements a wxSizer to control the displayed control size - but
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we give a hint as to our preferred minimum size.
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"""
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def __init__(self, parent, id, figure):
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# _FigureCanvasWxBase should be fixed to have the same signature as
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# every other FigureCanvas and use cooperative inheritance, but in the
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# meantime the following will make do.
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_FigureCanvasWxBase.__init__(self, parent, id, figure)
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FigureCanvasCairo.__init__(self, figure)
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self._renderer = RendererCairo(self.figure.dpi)
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def draw(self, drawDC=None):
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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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self.bitmap = wxcairo.BitmapFromImageSurface(surface)
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self._isDrawn = True
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self.gui_repaint(drawDC=drawDC, origin='WXCairo')
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@_BackendWx.export
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class _BackendWxCairo(_BackendWx):
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FigureCanvas = FigureCanvasWxCairo
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_frame_class = FigureFrameWxCairo
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