Now that I’ve got all my icons into the image library (see my recursive image library creation post) I wanted to limit the number of times I need to go back to an image editor to mess with the original files to create variations. One of the most common variations for button icons is the greyed out disabled icon so I wrote a little rev plugin to greyscale the selected images.
The plugin uses the following command:
on greyscale pImageID
local tImageData, tRed, tGreen, tBlue, tGrey, tOffset,tWidth,tHeight
lock screen
put the width of pImageID into tWidth
put the height of pImageID onto tHeight
put the imageData of pImageID into tImageData
repeat with tOffset = 0 to tWidth *tHeight * 4 step 4
put charToNum(char tOffset + 2 of tImageData) into tRed
put charToNum(char tOffset + 3 of tImageData) into tGreen
put charToNum(char tOffset + 4 of tImageData) into tBlue
--correction for better greyscale from Mark
--put (tRed+tGreen+tBlue) div 3 into tGrey
put (tRed*30+tGreen*59+tBlue*11) / 100 into tGrey
put NumToChar(tGrey) into char tOffset + 2 of tImageData
put NumToChar(tGrey) into char tOffset + 3 of tImageData
put NumToChar(tGrey) into char tOffset + 4 of tImageData
end repeat
set the imageData of pImageID to tImageData
end greyscale
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download: greyscaleIt (1.19KB) added: 04/09/2010 description: This is a quick little plugin I wrote for converting selected images to greyscale. Handy for creating disabled icons from active ones. |
