This type defines a gradient between 2 symbolic colors, with any number
of color stop between these. At the moment it has been put besides
GtkSymbolicColor, although should be completely private, it will likely
need extending in the future for radial gradients.
At some point, it maybe should also be used for images, so painting
both a gradient and an image is consistent.
Animation regions are confined through gtk_style_context_[push|pop]_animatable_region,
anything that's painted between these calls will be invalidated if an animation starts
for any of the regions in the stack.
gtk_style_context_notify_state_change() may be called from widgets to indicate a
change for a given GtkStateType, in that case an animation will be started if there
is an animation description for the widget/state.
This struct will be used to represent an animation in GtkStyleSet. It
will only be used internally in GtkStyleContext in order to trigger
animations, engines shouldn't need this.
This will only be used internally by GtkStyleContext in order
to animate state changes. When a proper animation framework is
introduced in GTK+, it may be ditched.
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 {}
GtkStyleRegion has been renamed to GtkStyleInfo, as it doesn't really
have much to do with regions itself, the information it contains does.
This struct is used in save/restore.
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"
