This was a hack we added in early 3.x to allow themes to customize their
checkmarks.
Now that we want to properly support real backgrounds everywhere,
supporting this feature would cause double draws of backgrounds.
It turns out that when we were painting the shadows, we painted the them
with the base color once, which contained the alpha, and then blurred it
and used it as a mask for the fill, which has the fill again.
To fix this, always paint the base surface with full alpha. The existing
code applies the blur conditionally sometimes in weird ways, so the code
shuffling fix may not look correct, but be assured it is. If the blur
happens, the new cr we return has the *default* color applied, which is
fully opaque black, which works perfectly against the A8 surface.
The fallback spinner code needs some modification, since it is
intentionally using the alpha to paint the lobes which are "in the past".
Since we shouldn't be hitting this fallback path very often, we use a
temporary group and paint it with paint_with_alpha, even though it is
slow.
Regions are done in a very non-css way. They don't fit the DOM in that
they don't integrate into the CSS tree and they have very weird matching
behavior in selectors.
So I'm deprecating them now. GtkNotebook and GtkTreeview will continue
to use them and as long as they do, we can't remove the code for it.
But once those are ported it might be safe to remove the code as it will
clean up lots of places in the code by quite a bit.
Provide API to query the matrix instead of API that applies the matrix
directly. This makes the API more flexible.
See the commits implementing shadows.
Theming code gets confused when computing the spacing for 0px wide dots
and then divides by 0. And then cairo complains and stops drawing
anything forever out of spite and then we end up with a single color
screen.
https://bugzilla.gnome.org/show_bug.cgi?id=721800
At this point, segments[1] is always uninitialised, and is used to
initialise itself. Looking at the code in the branch above, this appears
to have been a typo from segments[0], as segments[1] seems to typically
be 2 * segments[0].
Found by scan-build.
https://bugzilla.gnome.org/show_bug.cgi?id=712760
This draws an icon from a cairo_surface. We want to use this more rather
than render_icon as this means we can skip the pixbuf to surface
conversion (including allocation and alpha premultiplication) at
render time, plus we can use create_similar_image which may allow
faster rendering.
This is for a very simple reason: The getter is returning a const value
and the font isn't const anymore. So we need to store the font
description somewhere but we can't reuse it as it's changing all the
time (yay animations, yay inherited values). Sucks.
So keep the hack in here but deprecate the function.
I'm adding a bunch of fixes for gcc complaining about
-Wmissing-declarations.
This set of patches makes private classes in gtk/*.c that use
G_DEFINE_TYPE() safe by adding definitions for the get_type() function
that can't be made static.
It's wrong to hardcode the slider lines here; those should be rendered
as an additional background layer using background-image if the theme
specifies so.
https://bugzilla.gnome.org/show_bug.cgi?id=652304
