d14a1e2856
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@24541 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
46 lines
1.3 KiB
Python
46 lines
1.3 KiB
Python
#----------------------------------------------------------------------
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# Name: wxPython.lib.imageutils
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# Purpose: A collection of functions for simple image manipulations
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#
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# Author: Robb Shecter
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#
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# Created: 7-Nov-2002
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# RCS-ID: $Id$
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# Copyright: (c) 2002 by
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# Licence: wxWindows license
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#----------------------------------------------------------------------
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from __future__ import nested_scopes
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def grayOut(anImage):
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"""
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Convert the given image (in place) to a grayed-out
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version, appropriate for a 'disabled' appearance.
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"""
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factor = 0.7 # 0 < f < 1. Higher is grayer.
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if anImage.HasMask():
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maskColor = (anImage.GetMaskRed(), anImage.GetMaskGreen(), anImage.GetMaskBlue())
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else:
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maskColor = None
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data = map(ord, list(anImage.GetData()))
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for i in range(0, len(data), 3):
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pixel = (data[i], data[i+1], data[i+2])
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pixel = makeGray(pixel, factor, maskColor)
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for x in range(3):
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data[i+x] = pixel[x]
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anImage.SetData(''.join(map(chr, data)))
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def makeGray((r,g,b), factor, maskColor):
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"""
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Make a pixel grayed-out. If the pixel
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matches the maskColor, it won't be
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changed.
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"""
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if (r,g,b) != maskColor:
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return map(lambda x: int((230 - x) * factor) + x, (r,g,b))
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else:
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return (r,g,b)
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