TImage: PNG file with alpha channel. Showing without alpha channel !
lazarus / 39-Graphics

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azatsh · 2011-01-12 15:36

...........................................
image1 := TImage.Create(self);
image1.picture.loadfromfile('/home/azat/1.png'); // image with alpha
channel
image1.transparent := true;
...........................................

I use lazarus 0.9.29.26103. This problem exists only in Linux

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Marc · 2011-01-13 00:37

This is known. On linux (gtk) only a 1 bit alpha channel is supported

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azatsh · 2011-01-13 08:48

ok!

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Dibo · 2011-02-22 16:25

Is there any way to omit this problem? My toolbar icons on GTK have
some jagged edges

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Marc · 2011-02-22 22:47

Quote from: Dibo on February 22, 2011, 05:25:12 pmIs there any way to
omit this problem? My toolbar icons on GTK have some jagged edges
Wait, a rewrite of the lcl-gtk-devicecontext is planned

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Gintas · 2011-03-11 15:41

Well seems the best solution to this is using QT interface instead
GTK2.

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Dibo · 2011-03-11 15:56

I found very good temporary solution:
http://wiki.lazarus.freepascal.org/BGRABitmap