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This heuristic will make a background transparent as long as that background color appears in all 4 corners. It's a heuristic so it won't always produce correct results, but, IMO, it's better than nothing.
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Also, FYI, I implemented an ARGB to XPM converter in EXWM if you want to try stealing that code instead: https://github.com/emacs-exwm/exwm/blob/d1be727e1e96621478a209b48f7cf293a8fb4344/exwm.el#L440-L513 Unlike PBM, XPM has transparency support (although it doesn't have "true" alpha channel support). |
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Thanks again! I'll go with the heuristic, I prefer keeping my codebase small. |
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This heuristic will make a background transparent as long as that background color appears in all 4 corners. It's a heuristic so it won't always produce correct results, but, IMO, it's better than nothing.