Hi all,


try out this:


m := Morph new color: (Color red alpha: 0.5).
m openInHand.
m imageForm openAsMorph.

Output:

[cid:b8fe602f-7ca6-47d9-bd34-b5b52440cad7]

And for completeness' sake, "m imageForm asMorph imageForm openAsMorph" appears just a bit darker again.


I traced the issue down to two methods: For the regular Morph, FormCanvas >> #setFillColor:, and for the ImageMorph, Canvas >> #translucentImage:at:sourceRect:. In both methods, at the end, the rule Form blend is used to draw the image. If I change it to Form over, the colors are the same and the issue seems to be fixed.

But unfortunately, I could not find any documentation about the different Form rules such as #blend, #over, #paint etc. Can you give me some pointers?


Also, I noted the comment in #translucentImage:at:sourceRect: which states:


"Draw a translucent image using the best available way of representing translucency.
Note: This will be fixed in the future."


Which workaround is this comment referring to?


Looking forward to your help! :-)


Best,

Christoph
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