forked from 170010011/fr
93 lines
2.9 KiB
Python
93 lines
2.9 KiB
Python
|
import wx
|
||
|
|
|
||
|
|
from .backend_agg import FigureCanvasAgg
|
||
|
|
from .backend_wx import (
|
||
|
|
_BackendWx, _FigureCanvasWxBase, FigureFrameWx,
|
||
|
|
NavigationToolbar2Wx as NavigationToolbar2WxAgg)
|
||
|
|
|
||
|
|
|
||
|
|
class FigureFrameWxAgg(FigureFrameWx):
|
||
|
|
def get_canvas(self, fig):
|
||
|
|
return FigureCanvasWxAgg(self, -1, fig)
|
||
|
|
|
||
|
|
|
||
|
|
class FigureCanvasWxAgg(FigureCanvasAgg, _FigureCanvasWxBase):
|
||
|
|
"""
|
||
|
|
The FigureCanvas contains the figure and does event handling.
|
||
|
|
|
||
|
|
In the wxPython backend, it is derived from wxPanel, and (usually)
|
||
|
|
lives inside a frame instantiated by a FigureManagerWx. The parent
|
||
|
|
window probably implements a wxSizer to control the displayed
|
||
|
|
control size - but we give a hint as to our preferred minimum
|
||
|
|
size.
|
||
|
|
"""
|
||
|
|
|
||
|
|
def draw(self, drawDC=None):
|
||
|
|
"""
|
||
|
|
Render the figure using agg.
|
||
|
|
"""
|
||
|
|
FigureCanvasAgg.draw(self)
|
||
|
|
|
||
|
|
self.bitmap = _convert_agg_to_wx_bitmap(self.get_renderer(), None)
|
||
|
|
self._isDrawn = True
|
||
|
|
self.gui_repaint(drawDC=drawDC, origin='WXAgg')
|
||
|
|
|
||
|
|
def blit(self, bbox=None):
|
||
|
|
# docstring inherited
|
||
|
|
if bbox is None:
|
||
|
|
self.bitmap = _convert_agg_to_wx_bitmap(self.get_renderer(), None)
|
||
|
|
self.gui_repaint()
|
||
|
|
return
|
||
|
|
|
||
|
|
srcBmp = _convert_agg_to_wx_bitmap(self.get_renderer(), None)
|
||
|
|
srcDC = wx.MemoryDC()
|
||
|
|
srcDC.SelectObject(srcBmp)
|
||
|
|
|
||
|
|
destDC = wx.MemoryDC()
|
||
|
|
destDC.SelectObject(self.bitmap)
|
||
|
|
|
||
|
|
x = int(bbox.x0)
|
||
|
|
y = int(self.bitmap.GetHeight() - bbox.y1)
|
||
|
|
destDC.Blit(x, y, int(bbox.width), int(bbox.height), srcDC, x, y)
|
||
|
|
|
||
|
|
destDC.SelectObject(wx.NullBitmap)
|
||
|
|
srcDC.SelectObject(wx.NullBitmap)
|
||
|
|
self.gui_repaint()
|
||
|
|
|
||
|
|
|
||
|
|
def _convert_agg_to_wx_bitmap(agg, bbox):
|
||
|
|
"""
|
||
|
|
Convert the region of the agg buffer bounded by bbox to a wx.Bitmap. If
|
||
|
|
bbox is None, the entire buffer is converted.
|
||
|
|
Note: agg must be a backend_agg.RendererAgg instance.
|
||
|
|
"""
|
||
|
|
if bbox is None:
|
||
|
|
# agg => rgba buffer -> bitmap
|
||
|
|
return wx.Bitmap.FromBufferRGBA(int(agg.width), int(agg.height),
|
||
|
|
agg.buffer_rgba())
|
||
|
|
else:
|
||
|
|
# agg => rgba buffer -> bitmap => clipped bitmap
|
||
|
|
srcBmp = wx.Bitmap.FromBufferRGBA(int(agg.width), int(agg.height),
|
||
|
|
agg.buffer_rgba())
|
||
|
|
srcDC = wx.MemoryDC()
|
||
|
|
srcDC.SelectObject(srcBmp)
|
||
|
|
|
||
|
|
destBmp = wx.Bitmap(int(bbox.width), int(bbox.height))
|
||
|
|
destDC = wx.MemoryDC()
|
||
|
|
destDC.SelectObject(destBmp)
|
||
|
|
|
||
|
|
x = int(bbox.x0)
|
||
|
|
y = int(int(agg.height) - bbox.y1)
|
||
|
|
destDC.Blit(0, 0, int(bbox.width), int(bbox.height), srcDC, x, y)
|
||
|
|
|
||
|
|
srcDC.SelectObject(wx.NullBitmap)
|
||
|
|
destDC.SelectObject(wx.NullBitmap)
|
||
|
|
|
||
|
|
return destBmp
|
||
|
|
|
||
|
|
|
||
|
|
@_BackendWx.export
|
||
|
|
class _BackendWxAgg(_BackendWx):
|
||
|
|
FigureCanvas = FigureCanvasWxAgg
|
||
|
|
_frame_class = FigureFrameWxAgg
|