def OnPrintPage(self, page):
self.canvas.draw()
dc = self.GetDC()
(ppw, pph) = self.GetPPIPrinter() # printer's pixels per in
(pgw, pgh) = self.GetPageSizePixels() # page size in pixels
(dcw, dch) = dc.GetSize()
(grw, grh) = self.canvas.GetSizeTuple()
# save current figure dpi resolution and bg color,
# so that we can temporarily set them to the dpi of
# the printer, and the bg color to white
bgcolor = self.canvas.figure.get_facecolor()
fig_dpi = self.canvas.figure.dpi.get()
# draw the bitmap, scaled appropriately
vscale = float(ppw) / fig_dpi
# set figure resolution,bg color for printer
self.canvas.figure.dpi.set(ppw)
self.canvas.figure.set_facecolor('#FFFFFF')
renderer = RendererWx(self.canvas.bitmap, self.canvas.figure.dpi)
self.canvas.figure.draw(renderer)
self.canvas.bitmap.SetWidth(int(self.canvas.bitmap.GetWidth() *
vscale))
self.canvas.bitmap.SetHeight(
int(self.canvas.bitmap.GetHeight() * vscale))
self.canvas.draw()
# page may need additional scaling on preview
page_scale = 1.0
if self.IsPreview(): page_scale = float(dcw) / pgw
# get margin in pixels = (margin in in) * (pixels/in)
top_margin = int(self.margin * pph * page_scale)
left_margin = int(self.margin * ppw * page_scale)
# set scale so that width of output is self.width inches
# (assuming grw is size of graph in inches....)
user_scale = (self.width * fig_dpi * page_scale) / float(grw)
dc.SetDeviceOrigin(left_margin, top_margin)
dc.SetUserScale(user_scale, user_scale)
# this cute little number avoid API inconsistencies in wx
try:
dc.DrawBitmap(self.canvas.bitmap, 0, 0)
except:
try:
dc.DrawBitmap(self.canvas.bitmap, (0, 0))
except:
pass
self.canvas.m_parent.drawAllObjects(dc)
# restore original figure resolution
self.canvas.figure.set_facecolor(bgcolor)
self.canvas.figure.dpi.set(fig_dpi)
# __x self.canvas.m_parent.draw()
return True
def make_renderer(self):
return RendererWx(self.bitmap, self.figure.dpi)