Class
GtkStyleContext
Description [src]
class Gtk.StyleContext : GObject.Object {
parent_object: GObject
}
GtkStyleContext stores styling information affecting a widget.
In order to construct the final style information, GtkStyleContext
queries information from all attached GtkStyleProviders. Style
providers can be either attached explicitly to the context through
gtk_style_context_add_provider(), or to the display through
gtk_style_context_add_provider_for_display(). The resulting
style is a combination of all providers’ information in priority order.
For GTK widgets, any GtkStyleContext returned by
gtk_widget_get_style_context() will already have a GdkDisplay
and RTL/LTR information set. The style context will also be updated
automatically if any of these settings change on the widget.
Style Classes
Widgets can add style classes to their context, which can be used to associate different styles by class. The documentation for individual widgets lists which style classes it uses itself, and which style classes may be added by applications to affect their appearance.
Custom styling in UI libraries and applications
If you are developing a library with custom widgets that render differently
than standard components, you may need to add a GtkStyleProvider yourself
with the GTK_STYLE_PROVIDER_PRIORITY_FALLBACK priority, either a
GtkCssProvider or a custom object implementing the GtkStyleProvider
interface. This way themes may still attempt to style your UI elements in
a different way if needed so.
If you are using custom styling on an applications, you probably want then
to make your style information prevail to the theme’s, so you must use
a GtkStyleProvider with the GTK_STYLE_PROVIDER_PRIORITY_APPLICATION
priority, keep in mind that the user settings in
XDG_CONFIG_HOME/gtk-4.0/gtk.css will
still take precedence over your changes, as it uses the
GTK_STYLE_PROVIDER_PRIORITY_USER priority.
Functions
gtk_style_context_add_provider_for_display
Adds a global style provider to display, which will be used
in style construction for all GtkStyleContexts under display.
gtk_style_context_remove_provider_for_display
Removes provider from the global style providers list in display.
Instance methods
gtk_style_context_add_class
Adds a style class to context, so later uses of the
style context will make use of this new class for styling.
Signals
Signals inherited from GObject (1)
GObject::notify
The notify signal is emitted on an object when one of its properties has its value set through g_object_set_property(), g_object_set(), et al.
Class structure
struct GtkStyleContextClass {
GObjectClass parent_class;
void (* changed) (
GtkStyleContext* context
);
void (* _gtk_reserved1) (
void
);
void (* _gtk_reserved2) (
void
);
void (* _gtk_reserved3) (
void
);
void (* _gtk_reserved4) (
void
);
}
Class members
parent_class: GObjectClass- No description available.
changed: void (* changed) ( GtkStyleContext* context )- No description available.
_gtk_reserved1: void (* _gtk_reserved1) ( void )- No description available.
_gtk_reserved2: void (* _gtk_reserved2) ( void )- No description available.
_gtk_reserved3: void (* _gtk_reserved3) ( void )- No description available.
_gtk_reserved4: void (* _gtk_reserved4) ( void )- No description available.