pub struct Scale { /* private fields */ }
Expand description
A Scale
is a slider control used to select a numeric value.
To use it, you’ll probably want to investigate the methods on its base
class, Range
, in addition to the methods for Scale
itself.
To set the value of a scale, you would normally use RangeExt::set_value()
.
To detect changes to the value, you would normally use the
value-changed
signal.
Note that using the same upper and lower bounds for the Scale
(through
the Range
methods) will hide the slider itself. This is useful for
applications that want to show an undeterminate value on the scale, without
changing the layout of the application (such as movie or music players).
§GtkScale as GtkBuildable
Scale
supports a custom <marks>
element, which can contain multiple
<mark\>
elements. The “value” and “position” attributes have the same
meaning as ScaleExt::add_mark()
parameters of the same name. If
the element is not empty, its content is taken as the markup to show at
the mark. It can be translated with the usual ”translatable” and
“context” attributes.
§Shortcuts and Gestures
PopoverMenu
supports the following keyboard shortcuts:
- Arrow keys, + and - will increment or decrement by step, or by page when combined with Ctrl.
- PgUp and PgDn will increment or decrement by page.
- Home and End will set the minimum or maximum value.
§CSS nodes
scale[.fine-tune][.marks-before][.marks-after]
├── [value][.top][.right][.bottom][.left]
├── marks.top
│ ├── mark
│ ┊ ├── [label]
│ ┊ ╰── indicator
┊ ┊
│ ╰── mark
├── marks.bottom
│ ├── mark
│ ┊ ├── indicator
│ ┊ ╰── [label]
┊ ┊
│ ╰── mark
╰── trough
├── [fill]
├── [highlight]
╰── slider
Scale
has a main CSS node with name scale and a subnode for its contents,
with subnodes named trough and slider.
The main node gets the style class .fine-tune added when the scale is in ‘fine-tuning’ mode.
If the scale has an origin (see ScaleExt::set_has_origin()
), there is
a subnode with name highlight below the trough node that is used for rendering
the highlighted part of the trough.
If the scale is showing a fill level (see RangeExt::set_show_fill_level()
),
there is a subnode with name fill below the trough node that is used for
rendering the filled in part of the trough.
If marks are present, there is a marks subnode before or after the trough node, below which each mark gets a node with name mark. The marks nodes get either the .top or .bottom style class.
The mark node has a subnode named indicator. If the mark has text, it also has a subnode named label. When the mark is either above or left of the scale, the label subnode is the first when present. Otherwise, the indicator subnode is the first.
The main CSS node gets the ‘marks-before’ and/or ‘marks-after’ style classes added depending on what marks are present.
If the scale is displaying the value (see draw-value
),
there is subnode with name value. This node will get the .top or .bottom style
classes similar to the marks node.
§Accessibility
Scale
uses the AccessibleRole::Slider
role.
§Properties
§digits
The number of decimal places that are displayed in the value.
Readable | Writeable
§draw-value
Whether the current value is displayed as a string next to the slider.
Readable | Writeable
§has-origin
Whether the scale has an origin.
Readable | Writeable
§value-pos
The position in which the current value is displayed.
Readable | Writeable
Range
§adjustment
The adjustment that is controlled by the range.
Readable | Writeable | Construct
§fill-level
The fill level (e.g. prebuffering of a network stream).
Readable | Writeable
§inverted
If true
, the direction in which the slider moves is inverted.
Readable | Writeable
§restrict-to-fill-level
Controls whether slider movement is restricted to an upper boundary set by the fill level.
Readable | Writeable
§round-digits
The number of digits to round the value to when it changes.
See change-value
.
Readable | Writeable
§show-fill-level
Controls whether fill level indicator graphics are displayed on the trough.
Readable | Writeable
Widget
§can-focus
Whether the widget or any of its descendents can accept the input focus.
This property is meant to be set by widget implementations, typically in their instance init function.
Readable | Writeable
§can-target
Whether the widget can receive pointer events.
Readable | Writeable
§css-classes
A list of css classes applied to this widget.
Readable | Writeable
§css-name
The name of this widget in the CSS tree.
This property is meant to be set by widget implementations, typically in their instance init function.
Readable | Writeable | Construct Only
§cursor
The cursor used by @widget.
Readable | Writeable
§focus-on-click
Whether the widget should grab focus when it is clicked with the mouse.
This property is only relevant for widgets that can take focus.
Readable | Writeable
§focusable
Whether this widget itself will accept the input focus.
Readable | Writeable
§halign
How to distribute horizontal space if widget gets extra space.
Readable | Writeable
§has-default
Whether the widget is the default widget.
Readable
§has-focus
Whether the widget has the input focus.
Readable
§has-tooltip
Enables or disables the emission of the ::query-tooltip signal on @widget.
A value of true
indicates that @widget can have a tooltip, in this case
the widget will be queried using query-tooltip
to
determine whether it will provide a tooltip or not.
Readable | Writeable
§height-request
Override for height request of the widget.
If this is -1, the natural request will be used.
Readable | Writeable
§hexpand
Whether to expand horizontally.
Readable | Writeable
§hexpand-set
Whether to use the hexpand
property.
Readable | Writeable
§layout-manager
The LayoutManager
instance to use to compute the preferred size
of the widget, and allocate its children.
This property is meant to be set by widget implementations, typically in their instance init function.
Readable | Writeable
§margin-bottom
Margin on bottom side of widget.
This property adds margin outside of the widget’s normal size
request, the margin will be added in addition to the size from
WidgetExt::set_size_request()
for example.
Readable | Writeable
§margin-end
Margin on end of widget, horizontally.
This property supports left-to-right and right-to-left text directions.
This property adds margin outside of the widget’s normal size
request, the margin will be added in addition to the size from
WidgetExt::set_size_request()
for example.
Readable | Writeable
§margin-start
Margin on start of widget, horizontally.
This property supports left-to-right and right-to-left text directions.
This property adds margin outside of the widget’s normal size
request, the margin will be added in addition to the size from
WidgetExt::set_size_request()
for example.
Readable | Writeable
§margin-top
Margin on top side of widget.
This property adds margin outside of the widget’s normal size
request, the margin will be added in addition to the size from
WidgetExt::set_size_request()
for example.
Readable | Writeable
§name
The name of the widget.
Readable | Writeable
§opacity
The requested opacity of the widget.
Readable | Writeable
§overflow
How content outside the widget’s content area is treated.
This property is meant to be set by widget implementations, typically in their instance init function.
Readable | Writeable
§parent
The parent widget of this widget.
Readable
§receives-default
Whether the widget will receive the default action when it is focused.
Readable | Writeable
§root
The Root
widget of the widget tree containing this widget.
This will be None
if the widget is not contained in a root widget.
Readable
§scale-factor
The scale factor of the widget.
Readable
§sensitive
Whether the widget responds to input.
Readable | Writeable
§tooltip-markup
Sets the text of tooltip to be the given string, which is marked up with Pango markup.
Also see Tooltip::set_markup()
.
This is a convenience property which will take care of getting the
tooltip shown if the given string is not None
:
has-tooltip
will automatically be set to true
and there will be taken care of query-tooltip
in
the default signal handler.
Note that if both tooltip-text
and
tooltip-markup
are set, the last one wins.
Readable | Writeable
§tooltip-text
Sets the text of tooltip to be the given string.
Also see Tooltip::set_text()
.
This is a convenience property which will take care of getting the
tooltip shown if the given string is not None
:
has-tooltip
will automatically be set to true
and there will be taken care of query-tooltip
in
the default signal handler.
Note that if both tooltip-text
and
tooltip-markup
are set, the last one wins.
Readable | Writeable
§valign
How to distribute vertical space if widget gets extra space.
Readable | Writeable
§vexpand
Whether to expand vertically.
Readable | Writeable
§vexpand-set
Whether to use the vexpand
property.
Readable | Writeable
§visible
Whether the widget is visible.
Readable | Writeable
§width-request
Override for width request of the widget.
If this is -1, the natural request will be used.
Readable | Writeable
Accessible
§accessible-role
The accessible role of the given Accessible
implementation.
The accessible role cannot be changed once set.
Readable | Writeable
§Implements
ScaleExt
, RangeExt
, WidgetExt
, [trait@glib::ObjectExt
], AccessibleExt
, BuildableExt
, ConstraintTargetExt
, AccessibleRangeExt
, OrientableExt
, ScaleExtManual
, WidgetExtManual
, AccessibleExtManual
GLib type: GObject with reference counted clone semantics.
Implementations§
Source§impl Scale
impl Scale
pub const NONE: Option<&'static Scale> = None
Sourcepub fn new(
orientation: Orientation,
adjustment: Option<&impl IsA<Adjustment>>,
) -> Scale
pub fn new( orientation: Orientation, adjustment: Option<&impl IsA<Adjustment>>, ) -> Scale
Sourcepub fn with_range(
orientation: Orientation,
min: f64,
max: f64,
step: f64,
) -> Scale
pub fn with_range( orientation: Orientation, min: f64, max: f64, step: f64, ) -> Scale
Creates a new scale widget with a range from @min to @max.
The returns scale will have the given orientation and will let the user input a number between @min and @max (including @min and @max) with the increment @step. @step must be nonzero; it’s the distance the slider moves when using the arrow keys to adjust the scale value.
Note that the way in which the precision is derived works best if
@step is a power of ten. If the resulting precision is not suitable
for your needs, use ScaleExt::set_digits()
to correct it.
§orientation
the scale’s orientation.
§min
minimum value
§max
maximum value
§step
step increment (tick size) used with keyboard shortcuts
§Returns
a new Scale
Sourcepub fn builder() -> ScaleBuilder
pub fn builder() -> ScaleBuilder
Creates a new builder-pattern struct instance to construct Scale
objects.
This method returns an instance of ScaleBuilder
which can be used to create Scale
objects.
Trait Implementations§
Source§impl HasParamSpec for Scale
impl HasParamSpec for Scale
Source§impl<T: ScaleImpl> IsSubclassable<T> for Scale
impl<T: ScaleImpl> IsSubclassable<T> for Scale
Source§fn class_init(class: &mut Class<Self>)
fn class_init(class: &mut Class<Self>)
Source§fn instance_init(instance: &mut InitializingObject<T>)
fn instance_init(instance: &mut InitializingObject<T>)
Source§impl Ord for Scale
impl Ord for Scale
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<OT: ObjectType> PartialEq<OT> for Scale
impl<OT: ObjectType> PartialEq<OT> for Scale
Source§impl<OT: ObjectType> PartialOrd<OT> for Scale
impl<OT: ObjectType> PartialOrd<OT> for Scale
Source§impl StaticType for Scale
impl StaticType for Scale
Source§fn static_type() -> Type
fn static_type() -> Type
Self
.impl Eq for Scale
impl IsA<Accessible> for Scale
impl IsA<AccessibleRange> for Scale
impl IsA<Buildable> for Scale
impl IsA<ConstraintTarget> for Scale
impl IsA<Orientable> for Scale
impl IsA<Range> for Scale
impl IsA<Widget> for Scale
Auto Trait Implementations§
impl Freeze for Scale
impl RefUnwindSafe for Scale
impl !Send for Scale
impl !Sync for Scale
impl Unpin for Scale
impl UnwindSafe for Scale
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fn accessible_parent(&self) -> Option<Accessible>
v4_10
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fn accessible_role(&self) -> AccessibleRole
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fn at_context(&self) -> ATContext
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&self,
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fn connect_fill_level_notify<F: Fn(&Self) + 'static>( &self, f: F, ) -> SignalHandlerId
fn connect_inverted_notify<F: Fn(&Self) + 'static>( &self, f: F, ) -> SignalHandlerId
fn connect_restrict_to_fill_level_notify<F: Fn(&Self) + 'static>( &self, f: F, ) -> SignalHandlerId
fn connect_round_digits_notify<F: Fn(&Self) + 'static>( &self, f: F, ) -> SignalHandlerId
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fn connect_digits_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId
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Source§fn grab_focus(&self) -> bool
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Source§fn has_css_class(&self, css_class: &str) -> bool
fn has_css_class(&self, css_class: &str) -> bool
Source§fn has_default(&self) -> bool
fn has_default(&self) -> bool
Source§fn has_visible_focus(&self) -> bool
fn has_visible_focus(&self) -> bool
Source§fn in_destruction(&self) -> bool
fn in_destruction(&self) -> bool
Source§fn insert_action_group(&self, name: &str, group: Option<&impl IsA<ActionGroup>>)
fn insert_action_group(&self, name: &str, group: Option<&impl IsA<ActionGroup>>)
Source§fn insert_after(
&self,
parent: &impl IsA<Widget>,
previous_sibling: Option<&impl IsA<Widget>>,
)
fn insert_after( &self, parent: &impl IsA<Widget>, previous_sibling: Option<&impl IsA<Widget>>, )
Source§fn insert_before(
&self,
parent: &impl IsA<Widget>,
next_sibling: Option<&impl IsA<Widget>>,
)
fn insert_before( &self, parent: &impl IsA<Widget>, next_sibling: Option<&impl IsA<Widget>>, )
Source§fn is_ancestor(&self, ancestor: &impl IsA<Widget>) -> bool
fn is_ancestor(&self, ancestor: &impl IsA<Widget>) -> bool
Source§fn is_drawable(&self) -> bool
fn is_drawable(&self) -> bool
Source§fn is_focus(&self) -> bool
fn is_focus(&self) -> bool
Source§fn is_sensitive(&self) -> bool
fn is_sensitive(&self) -> bool
Source§fn is_visible(&self) -> bool
fn is_visible(&self) -> bool
::keynav-failed
signal on the widget. Read moreSource§fn list_mnemonic_labels(&self) -> Vec<Widget>
fn list_mnemonic_labels(&self) -> Vec<Widget>
Source§fn measure(
&self,
orientation: Orientation,
for_size: i32,
) -> (i32, i32, i32, i32)
fn measure( &self, orientation: Orientation, for_size: i32, ) -> (i32, i32, i32, i32)
Source§fn mnemonic_activate(&self, group_cycling: bool) -> bool
fn mnemonic_activate(&self, group_cycling: bool) -> bool
Source§fn observe_children(&self) -> ListModel
fn observe_children(&self) -> ListModel
GListModel
to track the children of @self. Read moreSource§fn observe_controllers(&self) -> ListModel
fn observe_controllers(&self) -> ListModel
Source§fn pick(&self, x: f64, y: f64, flags: PickFlags) -> Option<Widget>
fn pick(&self, x: f64, y: f64, flags: PickFlags) -> Option<Widget>
Source§fn queue_allocate(&self)
fn queue_allocate(&self)
WidgetImpl::size_allocate()
function. Read moreSource§fn queue_draw(&self)
fn queue_draw(&self)
Source§fn queue_resize(&self)
fn queue_resize(&self)
Source§fn remove_controller(&self, controller: &impl IsA<EventController>)
fn remove_controller(&self, controller: &impl IsA<EventController>)
Source§fn remove_css_class(&self, css_class: &str)
fn remove_css_class(&self, css_class: &str)
Source§fn remove_mnemonic_label(&self, label: &impl IsA<Widget>)
fn remove_mnemonic_label(&self, label: &impl IsA<Widget>)
Source§fn set_can_focus(&self, can_focus: bool)
fn set_can_focus(&self, can_focus: bool)
Source§fn set_can_target(&self, can_target: bool)
fn set_can_target(&self, can_target: bool)
Source§fn set_child_visible(&self, child_visible: bool)
fn set_child_visible(&self, child_visible: bool)
Source§fn set_css_classes(&self, classes: &[&str])
fn set_css_classes(&self, classes: &[&str])
Source§fn set_cursor(&self, cursor: Option<&Cursor>)
fn set_cursor(&self, cursor: Option<&Cursor>)
Source§fn set_cursor_from_name(&self, name: Option<&str>)
fn set_cursor_from_name(&self, name: Option<&str>)
Source§fn set_direction(&self, dir: TextDirection)
fn set_direction(&self, dir: TextDirection)
Source§fn set_focus_child(&self, child: Option<&impl IsA<Widget>>)
fn set_focus_child(&self, child: Option<&impl IsA<Widget>>)
Source§fn set_focus_on_click(&self, focus_on_click: bool)
fn set_focus_on_click(&self, focus_on_click: bool)
Source§fn set_focusable(&self, focusable: bool)
fn set_focusable(&self, focusable: bool)
Source§fn set_font_map(&self, font_map: Option<&impl IsA<FontMap>>)
fn set_font_map(&self, font_map: Option<&impl IsA<FontMap>>)
Source§fn set_font_options(&self, options: Option<&FontOptions>)
fn set_font_options(&self, options: Option<&FontOptions>)
cairo::FontOptions
used for Pango rendering
in this widget. Read moreSource§fn set_halign(&self, align: Align)
fn set_halign(&self, align: Align)
Source§fn set_has_tooltip(&self, has_tooltip: bool)
fn set_has_tooltip(&self, has_tooltip: bool)
has-tooltip
property on @self to @has_tooltip. Read moreSource§fn set_hexpand(&self, expand: bool)
fn set_hexpand(&self, expand: bool)
Source§fn set_hexpand_set(&self, set: bool)
fn set_hexpand_set(&self, set: bool)
Source§fn set_layout_manager(&self, layout_manager: Option<impl IsA<LayoutManager>>)
fn set_layout_manager(&self, layout_manager: Option<impl IsA<LayoutManager>>)
Source§fn set_margin_bottom(&self, margin: i32)
fn set_margin_bottom(&self, margin: i32)
Source§fn set_margin_end(&self, margin: i32)
fn set_margin_end(&self, margin: i32)
Source§fn set_margin_start(&self, margin: i32)
fn set_margin_start(&self, margin: i32)
Source§fn set_margin_top(&self, margin: i32)
fn set_margin_top(&self, margin: i32)
Source§fn set_widget_name(&self, name: &str)
fn set_widget_name(&self, name: &str)
Source§fn set_opacity(&self, opacity: f64)
fn set_opacity(&self, opacity: f64)
Source§fn set_overflow(&self, overflow: Overflow)
fn set_overflow(&self, overflow: Overflow)
Source§fn set_parent(&self, parent: &impl IsA<Widget>)
fn set_parent(&self, parent: &impl IsA<Widget>)
Source§fn set_receives_default(&self, receives_default: bool)
fn set_receives_default(&self, receives_default: bool)
Source§fn set_sensitive(&self, sensitive: bool)
fn set_sensitive(&self, sensitive: bool)
Source§fn set_size_request(&self, width: i32, height: i32)
fn set_size_request(&self, width: i32, height: i32)
Source§fn set_state_flags(&self, flags: StateFlags, clear: bool)
fn set_state_flags(&self, flags: StateFlags, clear: bool)
Source§fn set_tooltip_markup(&self, markup: Option<&str>)
fn set_tooltip_markup(&self, markup: Option<&str>)
Source§fn set_tooltip_text(&self, text: Option<&str>)
fn set_tooltip_text(&self, text: Option<&str>)
Source§fn set_valign(&self, align: Align)
fn set_valign(&self, align: Align)
Source§fn set_vexpand(&self, expand: bool)
fn set_vexpand(&self, expand: bool)
Source§fn set_vexpand_set(&self, set: bool)
fn set_vexpand_set(&self, set: bool)
Source§fn set_visible(&self, visible: bool)
fn set_visible(&self, visible: bool)
Source§fn should_layout(&self) -> bool
fn should_layout(&self) -> bool
Source§fn size_allocate(&self, allocation: &Allocation, baseline: i32)
fn size_allocate(&self, allocation: &Allocation, baseline: i32)
Source§fn snapshot_child(
&self,
child: &impl IsA<Widget>,
snapshot: &impl IsA<Snapshot>,
)
fn snapshot_child( &self, child: &impl IsA<Widget>, snapshot: &impl IsA<Snapshot>, )
Source§fn translate_coordinates(
&self,
dest_widget: &impl IsA<Widget>,
src_x: f64,
src_y: f64,
) -> Option<(f64, f64)>
fn translate_coordinates( &self, dest_widget: &impl IsA<Widget>, src_x: f64, src_y: f64, ) -> Option<(f64, f64)>
Source§fn trigger_tooltip_query(&self)
fn trigger_tooltip_query(&self)
Source§fn unrealize(&self)
fn unrealize(&self)
Source§fn unset_state_flags(&self, flags: StateFlags)
fn unset_state_flags(&self, flags: StateFlags)
Source§fn height_request(&self) -> i32
fn height_request(&self) -> i32
Source§fn set_height_request(&self, height_request: i32)
fn set_height_request(&self, height_request: i32)
Source§fn width_request(&self) -> i32
fn width_request(&self) -> i32
Source§fn set_width_request(&self, width_request: i32)
fn set_width_request(&self, width_request: i32)
Source§fn connect_destroy<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId
fn connect_destroy<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId
Source§fn connect_direction_changed<F: Fn(&Self, TextDirection) + 'static>(
&self,
f: F,
) -> SignalHandlerId
fn connect_direction_changed<F: Fn(&Self, TextDirection) + 'static>( &self, f: F, ) -> SignalHandlerId
Source§fn connect_hide<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId
fn connect_hide<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId
Source§fn connect_map<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId
fn connect_map<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId
Source§fn connect_mnemonic_activate<F: Fn(&Self, bool) -> Propagation + 'static>(
&self,
f: F,
) -> SignalHandlerId
fn connect_mnemonic_activate<F: Fn(&Self, bool) -> Propagation + 'static>( &self, f: F, ) -> SignalHandlerId
Source§fn connect_move_focus<F: Fn(&Self, DirectionType) + 'static>(
&self,
f: F,
) -> SignalHandlerId
fn connect_move_focus<F: Fn(&Self, DirectionType) + 'static>( &self, f: F, ) -> SignalHandlerId
fn emit_move_focus(&self, direction: DirectionType)
Source§fn connect_query_tooltip<F: Fn(&Self, i32, i32, bool, &Tooltip) -> bool + 'static>(
&self,
f: F,
) -> SignalHandlerId
fn connect_query_tooltip<F: Fn(&Self, i32, i32, bool, &Tooltip) -> bool + 'static>( &self, f: F, ) -> SignalHandlerId
Source§fn connect_realize<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId
fn connect_realize<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId
gdk::Surface
. Read moreSource§fn connect_show<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId
fn connect_show<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId
Source§fn connect_state_flags_changed<F: Fn(&Self, StateFlags) + 'static>(
&self,
f: F,
) -> SignalHandlerId
fn connect_state_flags_changed<F: Fn(&Self, StateFlags) + 'static>( &self, f: F, ) -> SignalHandlerId
Source§fn connect_unmap<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId
fn connect_unmap<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId
Source§fn connect_unrealize<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId
fn connect_unrealize<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId
gdk::Surface
associated with @widget is destroyed. Read more