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 import images
  30
  31 class TestMaskWindow(wxScrolledWindow):
  32     def __init__(self, parent):
  33         wxScrolledWindow.__init__(self, parent, -1)
  34         self.SetBackgroundColour(wxColour(0,128,0))
  35
  36         # A reference bitmap that we won't mask
  37         self.bmp_nomask  = images.getTestStar2Bitmap()
  38
  39         # One that we will
  40         self.bmp_withmask  = images.getTestStar2Bitmap()
  41
  42         # this mask comes from a monochrome bitmap
  43         self.bmp_themask = images.getTestMaskBitmap()
  44         self.bmp_themask.SetDepth(1)
  45         mask = wxMask(self.bmp_themask)
  46
  47         # set the mask on our bitmap
  48         self.bmp_withmask.SetMask(mask)
  49
  50         # Now we'll create a mask in a bit of an easier way, by picking a
  51         # colour in the image that is to be the transparent colour.
  52         self.bmp_withcolourmask  = images.getTestStar2Bitmap()
  53         mask = wxMaskColour(self.bmp_withcolourmask, wxWHITE)
  54         self.bmp_withcolourmask.SetMask(mask)
  55
  56         self.SetScrollbars(20, 20, 700/20, 460/20)
  57
  58         EVT_PAINT(self, self.OnPaint)
  59
  60
  61     def OnPaint (self, e):
  62         dc = wxPaintDC(self)
  63         self.PrepareDC(dc)
  64         dc.SetTextForeground(wxWHITE)
  65
  66         # make an interesting background...
  67         dc.SetPen(wxMEDIUM_GREY_PEN)
  68         for i in range(100):
  69             dc.DrawLine(0,i*10,i*10,0)
  70
  71         # draw raw image, mask, and masked images
  72         dc.DrawText('original image', 0,0)
  73         dc.DrawBitmap(self.bmp_nomask, 0,20, 0)
  74         dc.DrawText('with colour mask', 0,100)
  75         dc.DrawBitmap(self.bmp_withcolourmask, 0,120, 1)
  76         dc.DrawText('the mask image', 0,200)
  77         dc.DrawBitmap(self.bmp_themask, 0,220, 0)
  78         dc.DrawText('masked image', 0,300)
  79         dc.DrawBitmap(self.bmp_withmask, 0,320, 1)
  80
  81         cx,cy = self.bmp_themask.GetWidth(), self.bmp_themask.GetHeight()
  82
  83         # draw array of assorted blit operations
  84         mdc = wxMemoryDC()
  85         i = 0
  86         for text, code in logicList:
  87             x,y = 120+150*(i%4), 20+100*(i/4)
  88             dc.DrawText(text, x, y-20)
  89             mdc.SelectObject(self.bmp_withcolourmask)
  90             dc.Blit(x,y, cx,cy, mdc, 0,0, code, true)
  91             i = i + 1
  92
  93
  94 # On wxGTK there needs to be a panel under wxScrolledWindows if they are
  95 # going to be in a wxNotebook...
  96 class TestPanel(wxPanel):
  97     def __init__(self, parent, ID):
  98         wxPanel.__init__(self, parent, ID)
  99         self.win = TestMaskWindow(self)
 100         EVT_SIZE(self, self.OnSize)
 101
 102     def OnSize(self, evt):
 103         self.win.SetSize(evt.GetSize())
 104
 105
 106 #----------------------------------------------------------------------
 107
 108 def runTest(frame, nb, log):
 109     win = TestPanel(nb, -1)
 110     return win
 111
 112 #----------------------------------------------------------------------
 113
 114
 115
 116 overview = """\
 117 """