Interface

Gdk-4.0 ▶ Gdk ▶ MemoryTexture ▶ SignalSignatures

interface SignalSignatures {
    "invalidate-contents": () => void;
    "invalidate-size": () => void;
    notify: (pspec: GObject.ParamSpec) => void;
    "notify::color-state": (pspec: GObject.ParamSpec) => void;
    "notify::height": (pspec: GObject.ParamSpec) => void;
    "notify::width": (pspec: GObject.ParamSpec) => void;
    [key: `notify::${string}`]: (pspec: GObject.ParamSpec) => void;
}

Hierarchy (View Summary)

Indexable

Index
notify::color-state notify::height notify::width
invalidate-contents invalidate-size
notify
"notify::color-state": (pspec: GObject.ParamSpec) => void
"notify::height": (pspec: GObject.ParamSpec) => void
"notify::width": (pspec: GObject.ParamSpec) => void
"invalidate-contents": () => void

Emitted when the contents of the paintable change.

Examples for such an event would be videos changing to the next frame or the icon theme for an icon changing.

"invalidate-size": () => void

Emitted when the intrinsic size of the paintable changes.

This means the values reported by at least one of Gdk.Paintable.get_intrinsic_width, Gdk.Paintable.get_intrinsic_height or Gdk.Paintable.get_intrinsic_aspect_ratio has changed.

Examples for such an event would be a paintable displaying the contents of a toplevel surface being resized.

notify: (pspec: GObject.ParamSpec) => void

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.

Note that getting this signal doesn’t itself guarantee that the value of the property has actually changed. When it is emitted is determined by the derived GObject class. If the implementor did not create the property with GObject.ParamFlags.EXPLICIT_NOTIFY, then any call to g_object_set_property() results in ::notify being emitted, even if the new value is the same as the old. If they did pass GObject.ParamFlags.EXPLICIT_NOTIFY, then this signal is emitted only when they explicitly call g_object_notify() or g_object_notify_by_pspec(), and common practice is to do that only when the value has actually changed.

This signal is typically used to obtain change notification for a single property, by specifying the property name as a detail in the g_signal_connect() call, like this:

g_signal_connect (text_view->buffer, "notify::paste-target-list",
                  G_CALLBACK (gtk_text_view_target_list_notify),
                  text_view)

It is important to note that you must use [canonical parameter names][class@GObject.ParamSpec#parameter-names] as detail strings for the notify signal.