wxPython/tests/blit.py

   1 #-------------------------------------------------
   2
   3 from wxPython.wx import *
   4
   5
   6 class MyFrame(wxFrame):
   7     def __init__(self,parent,title,id):
   8         wxFrame.__init__(self,parent,title,id,
   9                          wxPoint(100,100),wxSize(300,300))
  10
  11
  12         self.SetBackgroundColour(wxWHITE)
  13         self.windowx,self.windowy=self.GetClientSizeTuple()
  14
  15         # make a memory DC to draw into...
  16         self.mask=wxMemoryDC()
  17
  18         self.maskbitmap=wxEmptyBitmap(self.windowx,self.windowy)
  19         self.mask.SelectObject(self.maskbitmap)
  20         self.mask.SetBackgroundMode(wxTRANSPARENT)
  21
  22         self.mask.SetDeviceOrigin(0,0)
  23
  24         self.mask.SetBrush(wxBrush(wxColour(150,160,0),wxSOLID))
  25         self.mask.SetPen(wxPen(wxColour(1,2,3),1,wxSOLID))
  26         self.mask.DrawRectangle(0,0,self.windowx,self.windowy)
  27
  28         img = wxImageFromBitmap(self.maskbitmap)
  29         print (img.GetRed(0,0), img.GetGreen(0,0), img.GetBlue(0,0))
  30
  31
  32     def OnPaint(self,evt):
  33         """ overriding OnPaint to give handler. """
  34         dc = wxPaintDC(self)
  35
  36         dc.Blit(0,0,self.windowx,self.windowy,self.mask,0,0,wxCOPY)
  37
  38 #-----------------------------------------------------------
  39
  40 if __name__ == "__main__":
  41     class MyApp(wxApp):
  42         def OnInit(self):
  43
  44             self.frame = MyFrame(NULL, -1, "Blit Test")
  45             self.frame.Show(true)
  46
  47             self.exiting = FALSE;
  48             return true
  49
  50     app = MyApp(0)     # Create an instance of the application
  51     app.MainLoop()     # Tell it to start processing events
  52
  53
  54