• Psychological Cleanup (6/6) Sep 30 2017 I have to display images with a few controls: alpha channel,
• Mike Wey (7/13) Oct 01 2017 For displaying an image you can use gtk.Image. Rotating, scaling and

Psychological Cleanup <Help Saving.World> writes:

I have to display images with a few controls: alpha channel, 
rotation, scaling, cropping. Generally it should be png but I 
want to be able to handle many images. The images will be memory 
based(I'll load the file in to memory then) and will be displayed 
in a drawing area.

Any ideas how to go about this correctly?

Mike Wey <mike-wey example.com> writes:

On 01-10-17 01:56, Psychological Cleanup wrote:
 I have to display images with a few controls: alpha channel, rotation, 
 scaling, cropping. Generally it should be png but I want to be able to 
 handle many images. The images will be memory based(I'll load the file 
 in to memory then) and will be displayed in a drawing area.
 
 Any ideas how to go about this correctly?

For displaying an image you can use gtk.Image. Rotating, scaling and 
cropping should be doable by loading the image into a cairo surface and 
then applying the transformations.
But that doesn't support things like changing the alpha channel.

-- 
Mike Wey