--- /dev/null
+
+import wx
+
+#----------------------------------------------------------------------
+
+class TestPanel(wx.Panel):
+ def __init__(self, parent, log):
+ self.log = log
+ wx.Panel.__init__(self, parent, -1)
+ self.Bind(wx.EVT_PAINT, self.OnPaint)
+
+ self.redBmp = self.MakeBitmap(188, 143, 234)
+ self.greenBmp = self.MakeBitmap(35, 142, 35)
+ self.blueBmp = self.MakeBitmap(50, 153, 204)
+
+ def MakeBitmap(self, red, green, blue, alpha=128):
+ bmp = wx.EmptyBitmap(100, 100, 32)
+
+ # Create an object that facilitates access to the bitmap's
+ # pixel buffer
+ pixelData = wx.AlphaPixelData(bmp)
+ if not pixelData:
+ raise RuntimeError("Failed to gain raw access to bitmap data.")
+
+ # We have two ways to access each pixel, first we'll use an
+ # iterator to set every pixel to the colour and alpha values
+ # passed in.
+ for pixel in pixelData:
+ pixel.Set(red, green, blue, alpha)
+
+ # Next we'll use the pixel accessor to draw a border
+ pixels = pixelData.GetPixels()
+ for x in xrange(100):
+ pixels.MoveTo(pixelData, x, 0)
+ pixels.Set(red, green, blue, wx.ALPHA_OPAQUE)
+ pixels.MoveTo(pixelData, x, 99)
+ pixels.Set(red, green, blue, wx.ALPHA_OPAQUE)
+ for y in xrange(100):
+ pixels.MoveTo(pixelData, 0, y)
+ pixels.Set(red, green, blue, wx.ALPHA_OPAQUE)
+ pixels.MoveTo(pixelData, 99, y)
+ pixels.Set(red, green, blue, wx.ALPHA_OPAQUE)
+
+ return bmp
+
+
+ def OnPaint(self, evt):
+ dc = wx.PaintDC(self)
+ dc.DrawBitmap(self.redBmp, 50, 50, True)
+ dc.DrawBitmap(self.greenBmp, 110, 110, True)
+ dc.DrawBitmap(self.blueBmp, 170, 50, True)
+
+#----------------------------------------------------------------------
+
+def runTest(frame, nb, log):
+ win = TestPanel(nb, log)
+ return win
+
+#----------------------------------------------------------------------
+
+
+
+overview = """<html><body>
+<h2><center>Raw Bitmap Access</center></h2>
+
+wx.NativePixelData and wx.AlphaPixelData provide a cross-platform way
+to access the platform-specific pixel buffer within a wx.Bitmap. They
+provide both a random access method, and an iterator interface.
+
+</body></html>
+"""
+
+
+
+if __name__ == '__main__':
+ import sys,os
+ import run
+ run.main(['', os.path.basename(sys.argv[0])] + sys.argv[1:])
+
projects / wxWidgets.git / commitdiff
