Adds a style class to context, so later uses of the style context will make use of this new class for styling.
Adds a style provider to context, to be used in style construction.
Gets the border for a given state as a gtk.border.Border.
Gets the foreground color for a given state.
Returns the gdk.display.Display to which context is attached.
Gets the margin for a given state as a gtk.border.Border.
Gets the padding for a given state as a gtk.border.Border.
Returns the scale used for assets.
Returns the state used for style matching.
Returns true if context currently has defined the given class name.
Looks up and resolves a color name in the context color map.
Removes class_name from context.
Removes provider from the style providers list in context.
Restores context state to a previous stage.
Saves the context state.
Attaches context to the given display.
Sets the scale to use when getting image assets for the style.
Sets the state to be used for style matching.
Converts the style context into a string representation.
Adds a global style provider to display, which will be used in style construction for all GtkStyleContexts under display.
Removes provider from the global style providers list in display.
Set the GObject of a D ObjectG wrapper.
Get a pointer to the underlying C object.
Calls g_object_ref() on a GObject.
Calls g_object_unref() on a GObject.
Get the GType of an object.
GObject GType property.
Convenience method to return this cast to a type. For use in D with statements.
Template to get the D object from a C GObject and cast it to the given D object type.
Connect a D closure to an object signal.
Template for setting a GObject property.
Template for getting a GObject property.
Creates a binding between source_property on source and target_property on target.
Creates a binding between source_property on source and target_property on target, allowing you to set the transformation functions to be used by the binding.
This function is intended for #GObject implementations to re-enforce a floating[floating-ref] object reference. Doing this is seldom required: all #GInitiallyUnowneds are created with a floating reference which usually just needs to be sunken by calling gobject.object.ObjectG.refSink.
Increases the freeze count on object. If the freeze count is non-zero, the emission of "notify" signals on object is stopped. The signals are queued until the freeze count is decreased to zero. Duplicate notifications are squashed so that at most one #GObject::notify signal is emitted for each property modified while the object is frozen.
Gets a named field from the objects table of associations (see gobject.object.ObjectG.setData).
Gets a property of an object.
This function gets back user data pointers stored via gobject.object.ObjectG.setQdata.
Gets n_properties properties for an object. Obtained properties will be set to values. All properties must be valid. Warnings will be emitted and undefined behaviour may result if invalid properties are passed in.
Checks whether object has a floating[floating-ref] reference.
Emits a "notify" signal for the property property_name on object.
Emits a "notify" signal for the property specified by pspec on object.
Increase the reference count of object, and possibly remove the floating[floating-ref] reference, if object has a floating reference.
Releases all references to other objects. This can be used to break reference cycles.
Each object carries around a table of associations from strings to pointers. This function lets you set an association.
Sets a property on an object.
Remove a specified datum from the object's data associations, without invoking the association's destroy handler.
This function gets back user data pointers stored via gobject.object.ObjectG.setQdata and removes the data from object without invoking its destroy() function (if any was set). Usually, calling this function is only required to update user data pointers with a destroy notifier, for example:
Reverts the effect of a previous call to gobject.object.ObjectG.freezeNotify. The freeze count is decreased on object and when it reaches zero, queued "notify" signals are emitted.
This function essentially limits the life time of the closure to the life time of the object. That is, when the object is finalized, the closure is invalidated by calling gobject.closure.Closure.invalidate on it, in order to prevent invocations of the closure with a finalized (nonexisting) object. Also, gobject.object.ObjectG.ref_ and gobject.object.ObjectG.unref are added as marshal guards to the closure, to ensure that an extra reference count is held on object during invocation of the closure. Usually, this function will be called on closures that use this object as closure data.
Connect to Notify signal.
Deprecated: The relevant API has been moved to gtk.widget.Widget where applicable; otherwise, there is no replacement for querying the style machinery. Stylable UI elements should use widgets.
gtk.style_context.StyleContext stores styling information affecting a widget.
In order to construct the final style information, gtk.style_context.StyleContext queries information from all attached GtkStyleProviders. Style providers can be either attached explicitly to the context through gtk.style_context.StyleContext.addProvider, or to the display through gtk.style_context.StyleContext.addProviderForDisplay. The resulting style is a combination of all providers’ information in priority order.
For GTK widgets, any gtk.style_context.StyleContext returned by gtk.widget.Widget.getStyleContext will already have a gdk.display.Display 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 gtk.style_provider.StyleProvider yourself with the GTK_STYLE_PROVIDER_PRIORITY_FALLBACK priority, either a gtk.css_provider.CssProvider or a custom object implementing the gtk.style_provider.StyleProvider 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 gtk.style_provider.StyleProvider 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.