"foreground-color" has been renamed to just "color" as in regular CSS,
and the "text-color" and "base-color" properties have been removed. The
default CSS has been changed to have widgets cope with this change.
Now selectors such as:
GtkWidget#name.class1.class2
#name.class1.class2
.class1.class2
are parsed correctly, being meaningful for a widget defining several
classes.
The "alpha" symbolic color modifies a passed color's alpha by a factor,
the syntax would accept things like:
background-color: alpha (@bg_color, 0.8);
foreground-color: alpha (shade (@fg_color, 0.8), 0.5);
The css parser has been modified to parse correctly radial gradients:
background-image: -gtk-gradient (radial,
center center, 0,
center center, 0.8,
from (#000), to (#fff));
The theming engine has been modified to correctly animate these,
as well as transitions between different pattern types.
Given there are other rules such as @import (which will be supported),
keep a sane namespace here, so for (re)defining a color name, in the CSS
file it will look like:
@define-color color-name #fff;
@define-color other-color mix (@color-name, #f00, 0.4);
The value it parses is similar to the border-image CSS3 property,
so strings like this will be accepted:
border-image: url (foo.png) 4 3 4 3 repeat repeat;
the image path is relative to the parsed CSS file dirname if no
absolute path is provided.
This support goes from the theming engines, which are able to retrieve
style for different combined states to the CSS provider, where several
state pseudo-classes may be specified, such as:
GtkButton:active:prelight {}
This function may be used for custom property registration from
theming engines. The property names will have the
-${engine-type-name}-${prop-name} format, the parser has been
modified to allow properties with '-' as the first char.
There's now a distinction between:
GtkLabel#label-name: Label with name "label-name"
GtkWindow #label-name: Window containing a widget named "label-name"
