pub struct WidgetPaintable { /* private fields */ }
Expand description
WidgetPaintable
is a gdk::Paintable
that displays the contents
of a widget.
WidgetPaintable
will also take care of the widget not being in a
state where it can be drawn (like when it isn’t shown) and just draw
nothing or where it does not have a size (like when it is hidden) and
report no size in that case.
Of course, WidgetPaintable
allows you to monitor widgets for size
changes by emitting the invalidate-size
signal
whenever the size of the widget changes as well as for visual changes by
emitting the invalidate-contents
signal whenever
the widget changes.
You can use a WidgetPaintable
everywhere a gdk::Paintable
is allowed,
including using it on a Picture
(or one of its parents) that it was
set on itself via gtk_picture_set_paintable(). The paintable will take care
of recursion when this happens. If you do this however, ensure that the
can-shrink
property is set to true
or you might
end up with an infinitely growing widget.
§Properties
§widget
The observed widget or None
if none.
Readable | Writeable
§Implements
[trait@glib::ObjectExt
], gdk::prelude::PaintableExt
GLib type: GObject with reference counted clone semantics.
Implementations§
source§impl WidgetPaintable
impl WidgetPaintable
sourcepub fn new(widget: Option<&impl IsA<Widget>>) -> WidgetPaintable
pub fn new(widget: Option<&impl IsA<Widget>>) -> WidgetPaintable
Creates a new widget paintable observing the given widget.
§widget
a Widget
§Returns
a new WidgetPaintable
sourcepub fn set_widget(&self, widget: Option<&impl IsA<Widget>>)
pub fn set_widget(&self, widget: Option<&impl IsA<Widget>>)
pub fn connect_widget_notify<F: Fn(&Self) + 'static>( &self, f: F, ) -> SignalHandlerId
Trait Implementations§
source§impl Clone for WidgetPaintable
impl Clone for WidgetPaintable
source§impl Debug for WidgetPaintable
impl Debug for WidgetPaintable
source§impl HasParamSpec for WidgetPaintable
impl HasParamSpec for WidgetPaintable
type ParamSpec = ParamSpecObject
source§type SetValue = WidgetPaintable
type SetValue = WidgetPaintable
type BuilderFn = fn(_: &str) -> ParamSpecObjectBuilder<'_, WidgetPaintable>
fn param_spec_builder() -> Self::BuilderFn
source§impl Hash for WidgetPaintable
impl Hash for WidgetPaintable
source§impl Ord for WidgetPaintable
impl Ord for WidgetPaintable
source§fn cmp(&self, other: &Self) -> Ordering
fn cmp(&self, other: &Self) -> Ordering
Comparison for two GObjects.
Compares the memory addresses of the provided objects.
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
source§impl ParentClassIs for WidgetPaintable
impl ParentClassIs for WidgetPaintable
source§impl<OT: ObjectType> PartialEq<OT> for WidgetPaintable
impl<OT: ObjectType> PartialEq<OT> for WidgetPaintable
source§impl<OT: ObjectType> PartialOrd<OT> for WidgetPaintable
impl<OT: ObjectType> PartialOrd<OT> for WidgetPaintable
source§impl StaticType for WidgetPaintable
impl StaticType for WidgetPaintable
source§fn static_type() -> Type
fn static_type() -> Type
Self
.impl Eq for WidgetPaintable
impl IsA<Paintable> for WidgetPaintable
Auto Trait Implementations§
impl Freeze for WidgetPaintable
impl RefUnwindSafe for WidgetPaintable
impl !Send for WidgetPaintable
impl !Sync for WidgetPaintable
impl Unpin for WidgetPaintable
impl UnwindSafe for WidgetPaintable
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