[squeak-dev] ImageForm color with alpha
Marcel Taeumel
marcel.taeumel at hpi.de
Tue Dec 11 13:03:18 UTC 2018
Hmm... that's not good for an arbitrary form with alpha informationen. Why not use #blend the entire time here? Isn't #blendAlpha and #blendAlphaScaled kind of a performance trick?
blend
"Answer the integer denoting BitBlt's alpha blend combination rule."
^24
blendAlpha
"Answer the integer denoting BitBlt's blend-with-constant-alpha rule."
^ 30
blendAlphaScaled
"Answer the integer denoting BitBlt's blend-with-alpha-scaled rule."
^ 34
Best,
Marcel
Am 11.12.2018 11:52:14 schrieb Stéphane Rollandin <lecteur at zogotounga.net>:
> Ah! It seems that simply using #blendAlphaScaled in
> #translucentImage:at:sourceRect: does the trick...
Unfortunately this has side effects. For example, #dimmed is now broken...
Stef
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