projects / wxWidgets.git / blame
| Commit | Line | Data |
|---|---|---|
| d14a1e28 RD |
1 | #---------------------------------------------------------------------- |
| 2 | # Name: wxPython.lib.imageutils | |
| 3 | # Purpose: A collection of functions for simple image manipulations | |
| 4 | # | |
| 5 | # Author: Robb Shecter | |
| 6 | # | |
| 7 | # Created: 7-Nov-2002 | |
| 8 | # RCS-ID: $Id$ | |
| 9 | # Copyright: (c) 2002 by | |
| 10 | # Licence: wxWindows license | |
| 11 | #---------------------------------------------------------------------- | |
| 1fded56b | 12 | |
| d14a1e28 | 13 | from __future__ import nested_scopes |
| 1fded56b | 14 | |
| d14a1e28 RD |
15 | |
| 16 | def grayOut(anImage): | |
| 17 | """ | |
| 18 | Convert the given image (in place) to a grayed-out | |
| 19 | version, appropriate for a 'disabled' appearance. | |
| 20 | """ | |
| 21 | factor = 0.7 # 0 < f < 1. Higher is grayer. | |
| 22 | if anImage.HasMask(): | |
| 23 | maskColor = (anImage.GetMaskRed(), anImage.GetMaskGreen(), anImage.GetMaskBlue()) | |
| 24 | else: | |
| 25 | maskColor = None | |
| 26 | data = map(ord, list(anImage.GetData())) | |
| 27 | ||
| 28 | for i in range(0, len(data), 3): | |
| 29 | pixel = (data[i], data[i+1], data[i+2]) | |
| 30 | pixel = makeGray(pixel, factor, maskColor) | |
| 31 | for x in range(3): | |
| 32 | data[i+x] = pixel[x] | |
| 33 | anImage.SetData(''.join(map(chr, data))) | |
| 34 | ||
| 35 | ||
| 36 | def makeGray((r,g,b), factor, maskColor): | |
| 37 | """ | |
| 38 | Make a pixel grayed-out. If the pixel | |
| 39 | matches the maskColor, it won't be | |
| 40 | changed. | |
| 41 | """ | |
| 42 | if (r,g,b) != maskColor: | |
| 43 | return map(lambda x: int((230 - x) * factor) + x, (r,g,b)) | |
| 44 | else: | |
| 45 | return (r,g,b) |