Am 17.03.2013 22:17, Chris Russ wrote:
Upon further investigation, the documentation says that the only way to get
transparency (and 100% transparency at that) is with an Fl_Pixmap (say, a
GIF file), and that is definitely NOT RGB. Even so, would that work where
this fails, albeit without
On 16.03.2013 03:21, Chris Russ wrote:
I've been working on a widget that can show images zoomed in and out at
arbitrary percentages, and that part works. Now, in the middle of my
::draw() function I want to overlay some RGBA PNG images -- these have
transparency where I'd like the
As Ian and Greg pointed out already, alpha blending works with
FLTK 1.3 (and even with 1.1), but there are some restrictions.
Greg's method works like a champ and I actually found it about 1/2 hour after I
posted this in the forum. Thanks!
Upon further investigation, the documentation
On 16 Mar 2013, at 02:21, Chris Russ wrote:
I've been working on a widget that can show images zoomed in and out at
arbitrary percentages, and that part works. Now, in the middle of my
::draw() function I want to overlay some RGBA PNG images -- these have
transparency where I'd like the
Correction:
I hinted that the unittest_images demo did not work right on X11, but I just
fired up a VM to check and it worked fine for me (Ubuntu-12.10 VM) with
fltk-1.3.x-r9835
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On 03/15/13 19:21, Chris Russ wrote:
But alpha blending isn't happening.
This technique works for me:
http://seriss.com/people/erco/fltk/#AlphaBlend
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I've been working on a widget that can show images zoomed in and out at
arbitrary percentages, and that part works. Now, in the middle of my ::draw()
function I want to overlay some RGBA PNG images -- these have transparency
where I'd like the underlying image to show up.
I can make the
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