utils/wxPython/demo/wxMask.py

   1
   2 from wxPython.wx import *
   3
   4 #----------------------------------------------------------------------
   5
   6 logicList = [
   7     ('wxAND', wxAND),
   8     ('wxAND_INVERT', wxAND_INVERT),
   9     ('wxAND_REVERSE', wxAND_REVERSE),
  10     ('wxCLEAR', wxCLEAR),
  11     ('wxCOPY', wxCOPY),
  12     ('wxEQUIV', wxEQUIV),
  13     ('wxINVERT', wxINVERT),
  14     ('wxNAND', wxNAND),
  15
  16     # this one causes an assert on wxGTK, and doesn't seem to
  17     # do much on MSW anyway, so I'll just take it out....
  18     #('wxNOR', wxNOR),
  19
  20     ('wxNO_OP', wxNO_OP),
  21     ('wxOR', wxOR),
  22     ('wxOR_INVERT', wxOR_INVERT),
  23     ('wxOR_REVERSE', wxOR_REVERSE),
  24     ('wxSET', wxSET),
  25     ('wxSRC_INVERT', wxSRC_INVERT),
  26     ('wxXOR', wxXOR),
  27 ]
  28
  29 class TestMaskWindow(wxScrolledWindow):
  30     def __init__(self, parent):
  31         wxScrolledWindow.__init__(self, parent, -1)
  32         self.SetBackgroundColour(wxColour(0,128,0))
  33
  34         # A reference bitmap that we won't mask
  35         self.bmp_nomask  = wxBitmap('bitmaps/test_image.png', wxBITMAP_TYPE_PNG)
  36
  37         # One that we will
  38         self.bmp_withmask  = wxBitmap('bitmaps/test_image.png', wxBITMAP_TYPE_PNG)
  39
  40         # this mask comes from a monochrome bitmap
  41         self.bmp_themask = wxBitmap('bitmaps/test_mask.bmp',  wxBITMAP_TYPE_BMP)
  42         self.bmp_themask.SetDepth(1)
  43         mask = wxMask(self.bmp_themask)
  44
  45         # set the mask on our bitmap
  46         self.bmp_withmask.SetMask(mask)
  47
  48         # Now we'll create a mask in a bit of an easier way, by picking a
  49         # colour in the image that is to be the transparent colour.
  50         self.bmp_withcolourmask  = wxBitmap('bitmaps/test_image.png', wxBITMAP_TYPE_PNG)
  51         mask = wxMaskColour(self.bmp_withcolourmask, wxWHITE)
  52         self.bmp_withcolourmask.SetMask(mask)
  53
  54         self.SetScrollbars(20, 20, 600/20, 460/20)
  55
  56
  57
  58     def OnPaint (self, e):
  59         dc = wxPaintDC(self)
  60         self.PrepareDC(dc)
  61         dc.SetTextForeground(wxWHITE)
  62
  63         # make an interesting background...
  64         dc.SetPen(wxMEDIUM_GREY_PEN)
  65         for i in range(100):
  66             dc.DrawLine(0,i*10,i*10,0)
  67
  68         # draw raw image, mask, and masked images
  69         dc.DrawText('original image', 0,0)
  70         dc.DrawBitmap(self.bmp_nomask, 0,20, 0)
  71         dc.DrawText('with colour mask', 0,100)
  72         dc.DrawBitmap(self.bmp_withcolourmask, 0,120, 1)
  73         dc.DrawText('the mask image', 0,200)
  74         dc.DrawBitmap(self.bmp_themask, 0,220, 0)
  75         dc.DrawText('masked image', 0,300)
  76         dc.DrawBitmap(self.bmp_withmask, 0,320, 1)
  77
  78         cx,cy = self.bmp_themask.GetWidth(), self.bmp_themask.GetHeight()
  79
  80         # draw array of assorted blit operations
  81         mdc = wxMemoryDC()
  82         i = 0
  83         for text, code in logicList:
  84             x,y = 120+100*(i%4), 20+100*(i/4)
  85             dc.DrawText(text, x,y-20)
  86             mdc.SelectObject(self.bmp_withcolourmask)
  87             dc.Blit(x,y, cx,cy, mdc, 0,0, code, true)
  88             i = i + 1
  89
  90
  91
  92
  93 #----------------------------------------------------------------------
  94
  95 def runTest(frame, nb, log):
  96     win = TestMaskWindow(nb)
  97     return win
  98
  99 #----------------------------------------------------------------------
 100
 101
 102
 103 overview = """\
 104 """