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| Formats and Conversions | == Formats and Conversions == |
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| Using dynamic bitmaps (wxBitmapFromData) | == Using dynamic bitmaps (wxBitmapFromData) == |
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| Drawing Bitmaps to Screen/Printer Contexts | === Example === This example shows the creation of a bitmap using a Numeric Python array as the data source for a {{{wxImage/wxBitmap}}}. Note that Numeric uses reversed column-row ordering compared to wxPython, so you'll need to make sure that you generate images using height, width, not width, height coordinates. {{{ def GetBitmap( self, width=32, height=32, colour = (0,0,0) ): array = Numeric.zeros( (height, width, 3),'c') array[:,:,] = colour image = wxEmptyImage(width,height) image.SetData( array.tostring()) return image.ConvertToBitmap() }}} == Drawing Bitmaps to Screen/Printer Contexts == |
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| Masks and Transparency/Alpha | == Masks and Transparency/Alpha == |
Formats and Conversions
- Conversions among wxImage, wxBitmap, wxCursor, wxIcon Embedding images in code as strings, conversion to/from strings Using PIL with wxPython Using Numeric with wxPython for Images Animated Icons (are these possible in wxPython?)
Using dynamic bitmaps (wxBitmapFromData)
- Run-time generation of images Using device contexts to write into wxBitmaps
Example
This example shows the creation of a bitmap using a Numeric Python array as the data source for a wxImage/wxBitmap. Note that Numeric uses reversed column-row ordering compared to wxPython, so you'll need to make sure that you generate images using height, width, not width, height coordinates.
{{{ def GetBitmap( self, width=32, height=32, colour = (0,0,0) ):
- array = Numeric.zeros( (height, width, 3),'c') array[:,:,] = colour image = wxEmptyImage(width,height)
image.SetData( array.tostring()) return image.ConvertToBitmap()
}}}
Drawing Bitmaps to Screen/Printer Contexts
- This is basically covered in the demo, but it's part of the topic.
Masks and Transparency/Alpha
- Bitmap masks (from the demo) Alpha-blending (is this even possible?)