ImageViewer: change colors on Fedora 20

[godiard]

In Fedora 20 images, the image colors are wrong.

A patch is available ​https://github.com/godiard/imageviewer-activity/pull/1 but in theory cairo.create_similar should work and provide better performance.

The issue is only visible in Fedora 20 images on arm, works ok on i686.

In Fedora 18 worked without issues.

[godiard]

The same code is used in other activities:

[gonzalo@localhost honey]$ grep -r create_similar * --include=*.py
browse/mainline/webactivity.py:        thumb_surface = Gdk.Window.create_similar_surface(window,
clock/mainline/clock.py:        self._simple_background_cache = cr.get_target().create_similar(
clock/mainline/clock.py:        self._nice_background_cache = cr.get_target().create_similar(
fototoon/fototoon-activity/reorderwindow.py:        self.image = ctx.get_target().create_similar(
fototoon/fototoon-activity/historietaactivity.py:            self.image = ctx.get_target().create_similar(
fototoon/fototoon-activity/historietaactivity.py:                sav_img = ctx.get_target().create_similar(
fototoon/fototoon-activity/historietaactivity.py:            self.image = ctx.get_target().create_similar(
imageviewer/imageviewer-activity/ImageView.py:    surface = ctx.get_target().create_similar(
imageviewer/imageviewer-activity/ImageView.py:    new_surface = ctx.get_target().create_similar(
maze/maze-activity/game.py:            self._cached_surface = ctx.get_target().create_similar(
memorize/memorize-activity/svgcard.py:            context.get_target().create_similar(cairo.CONTENT_COLOR_ALPHA,
paint/paint-activity/Area.py:            self.drawing_canvas = context.get_target().create_similar(
paint/paint-activity/Area.py:            self.temp_canvas = context.get_target().create_similar(
paint/paint-activity/Area.py:        mirror_surface = surface.create_similar(cairo.CONTENT_COLOR_ALPHA,
paint/paint-activity/Area.py:        rotate_surface = surface.create_similar(cairo.CONTENT_COLOR_ALPHA,
paint/paint-activity/Area.py:            self.drawing_canvas_data = surface.create_similar(
read/read-activity/readactivity.py:        screenshot_surface = target.create_similar(cairo.CONTENT_COLOR,
turtleart/mainline/TurtleArtActivity.py:        self.turtle_canvas = cr.get_target().create_similar(
turtleart/mainline/turtleblocks.py:        self.turtle_canvas = surface.create_similar(
turtleart/mainline/pyexported/window_setup.py:        self.turtle_canvas = surface.create_similar(

[godiard]

Original image

[godiard]

How is displayed in the ImageViewer activity

[godiard]

xdpyinfo output on Fedora 18

[godiard]

xdpyinfo output on Fedora 20

[godiard]

Reported upstream ​http://lists.cairographics.org/archives/cairo/2014-September/025689.html

[godiard]

Fixed by 071ba2ebd06e58ca98fd4a3c94d21888f62012d7
Version 60