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import wx |
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from .. import _api |
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from .backend_agg import FigureCanvasAgg |
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from .backend_wx import _BackendWx, _FigureCanvasWxBase, FigureFrameWx |
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from .backend_wx import ( |
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NavigationToolbar2Wx as NavigationToolbar2WxAgg) |
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@_api.deprecated( |
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"3.6", alternative="FigureFrameWx(..., canvas_class=FigureCanvasWxAgg)") |
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class FigureFrameWxAgg(FigureFrameWx): |
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def get_canvas(self, fig): |
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return FigureCanvasWxAgg(self, -1, fig) |
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class FigureCanvasWxAgg(FigureCanvasAgg, _FigureCanvasWxBase): |
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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) |
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lives inside a frame instantiated by a FigureManagerWx. The parent |
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window probably implements a wxSizer to control the displayed |
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control size - but we give a hint as to our preferred minimum |
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size. |
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""" |
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def draw(self, drawDC=None): |
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""" |
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Render the figure using agg. |
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""" |
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FigureCanvasAgg.draw(self) |
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self.bitmap = _rgba_to_wx_bitmap(self.get_renderer().buffer_rgba()) |
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self._isDrawn = True |
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self.gui_repaint(drawDC=drawDC) |
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def blit(self, bbox=None): |
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bitmap = _rgba_to_wx_bitmap(self.get_renderer().buffer_rgba()) |
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if bbox is None: |
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self.bitmap = bitmap |
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else: |
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srcDC = wx.MemoryDC(bitmap) |
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destDC = wx.MemoryDC(self.bitmap) |
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x = int(bbox.x0) |
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y = int(self.bitmap.GetHeight() - bbox.y1) |
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destDC.Blit(x, y, int(bbox.width), int(bbox.height), srcDC, x, y) |
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destDC.SelectObject(wx.NullBitmap) |
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srcDC.SelectObject(wx.NullBitmap) |
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self.gui_repaint() |
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def _rgba_to_wx_bitmap(rgba): |
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"""Convert an RGBA buffer to a wx.Bitmap.""" |
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h, w, _ = rgba.shape |
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return wx.Bitmap.FromBufferRGBA(w, h, rgba) |
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@_BackendWx.export |
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class _BackendWxAgg(_BackendWx): |
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FigureCanvas = FigureCanvasWxAgg |
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