Struct libhandy::HeaderBar

pub struct HeaderBar { /* private fields */ }

A title bar widget.

HeaderBar is similar to [gtk::HeaderBar][crate::gtk::HeaderBar] but is designed to fix some of its shortcomings for adaptive applications.

HeaderBar doesn’t force the custom title widget to be vertically centered, hence allowing it to fill up the whole height, which is e.g. needed for ViewSwitcher.

When used in a mobile dialog, HeaderBar will replace its window decorations by a back button allowing to close it. It doesn’t have to be its direct child and you can use any complex contraption you like as the dialog’s titlebar.

HeaderBar can be used in window’s content area rather than titlebar, and will still be draggable and will handle right click, middle click and double click as expected from a titlebar. This is particularly useful with Window or ApplicationWindow.

CSS nodes

HeaderBar has a single CSS node with name headerbar.

Properties

centering-policy

The policy for aligning the center widget.

Readable | Writeable

custom-title

Custom title widget to display.

Readable | Writeable

decoration-layout

The decoration layout for buttons.

If this property is not set, the [gtk-decoration-layout][struct@crate::Gtk::Settings#gtk-decoration-layout] setting is used.

There can be valid reasons for overriding the setting, such as a header bar design that does not allow for buttons to take room on the right, or only offers room for a single close button. Split header bars are another example for overriding the setting.

The format of the string is button names, separated by commas. A colon separates the buttons that should appear on the start from those on the end. Recognized button names are minimize, maximize, close, icon (the window icon) and menu (a menu button for the fallback app menu).

For example, “menu:minimize,maximize,close” specifies a menu on the left, and minimize, maximize and close buttons on the right.

Readable | Writeable

decoration-layout-set

Whether decoration-layout is set.

Readable | Writeable

has-subtitle

Whether to reserve space for a subtitle, even if none is currently set.

Readable | Writeable

interpolate-size

Whether the size should smoothly change when changing between children.

If TRUE, the header bar will interpolate its size between the one of the previous visible child and the one of the new visible child, according to the set transition duration and the orientation, e.g. if the orientation is horizontal, it will interpolate the its height.

Readable | Writeable

show-close-button

Whether to show window decorations.

Which buttons are actually shown and where is determined by the decoration-layout property, and by the state of the window (e.g. a close button will not be shown if the window can’t be closed).

Readable | Writeable

spacing

The amount of space between children.

Readable | Writeable

subtitle

The subtitle to display.

Readable | Writeable

title

The title to display.

Readable | Writeable

transition-duration

The transition duration, in milliseconds.

Readable | Writeable

transition-running

Whether or not the transition is currently running.

Readable

Container

border-width

Readable | Writeable

child

Writeable

resize-mode

Readable | Writeable

Widget

app-paintable

Readable | Writeable

can-default

Readable | Writeable

can-focus

Readable | Writeable

composite-child

Readable

double-buffered

Whether the widget is double buffered.

Readable | Writeable

events

Readable | Writeable

expand

Whether to expand in both directions. Setting this sets both #GtkWidget:hexpand and #GtkWidget:vexpand

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.

Before 3.20, several widgets (GtkButton, GtkFileChooserButton, GtkComboBox) implemented this property individually.

Readable | Writeable

halign

How to distribute horizontal space if widget gets extra space, see #GtkAlign

Readable | Writeable

has-default

Readable | Writeable

has-focus

Readable | Writeable

has-tooltip

Enables or disables the emission of #GtkWidget::query-tooltip on @widget. A value of true indicates that @widget can have a tooltip, in this case the widget will be queried using #GtkWidget::query-tooltip to determine whether it will provide a tooltip or not.

Note that setting this property to true for the first time will change the event masks of the GdkWindows of this widget to include leave-notify and motion-notify events. This cannot and will not be undone when the property is set to false again.

Readable | Writeable

height-request

Readable | Writeable

hexpand

Whether to expand horizontally. See gtk_widget_set_hexpand().

Readable | Writeable

hexpand-set

Whether to use the #GtkWidget:hexpand property. See gtk_widget_get_hexpand_set().

Readable | Writeable

is-focus

Readable | Writeable

margin

Sets all four sides’ margin at once. If read, returns max margin on any side.

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 gtk_widget_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 gtk_widget_set_size_request() for example.

Readable | Writeable

margin-left

Margin on left 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 gtk_widget_set_size_request() for example.

Readable | Writeable

margin-right

Margin on right 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 gtk_widget_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 gtk_widget_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 gtk_widget_set_size_request() for example.

Readable | Writeable

name

Readable | Writeable

no-show-all

Readable | Writeable

opacity

The requested opacity of the widget. See gtk_widget_set_opacity() for more details about window opacity.

Before 3.8 this was only available in GtkWindow

Readable | Writeable

parent

Readable | Writeable

receives-default

Readable | Writeable

scale-factor

The scale factor of the widget. See gtk_widget_get_scale_factor() for more details about widget scaling.

Readable

sensitive

Readable | Writeable

style

The style of the widget, which contains information about how it will look (colors, etc).

Readable | Writeable

tooltip-markup

Sets the text of tooltip to be the given string, which is marked up with the [Pango text markup language][PangoMarkupFormat]. Also see gtk_tooltip_set_markup().

This is a convenience property which will take care of getting the tooltip shown if the given string is not None: #GtkWidget:has-tooltip will automatically be set to true and there will be taken care of #GtkWidget::query-tooltip in the default signal handler.

Note that if both #GtkWidget:tooltip-text and #GtkWidget:tooltip-markup are set, the last one wins.

Readable | Writeable

tooltip-text

Sets the text of tooltip to be the given string.

Also see gtk_tooltip_set_text().

This is a convenience property which will take care of getting the tooltip shown if the given string is not None: #GtkWidget:has-tooltip will automatically be set to true and there will be taken care of #GtkWidget::query-tooltip in the default signal handler.

Note that if both #GtkWidget:tooltip-text and #GtkWidget:tooltip-markup are set, the last one wins.

Readable | Writeable

valign

How to distribute vertical space if widget gets extra space, see #GtkAlign

Readable | Writeable

vexpand

Whether to expand vertically. See gtk_widget_set_vexpand().

Readable | Writeable

vexpand-set

Whether to use the #GtkWidget:vexpand property. See gtk_widget_get_vexpand_set().

Readable | Writeable

visible

Readable | Writeable

width-request

Readable | Writeable

window

The widget’s window if it is realized, None otherwise.

Readable

Implements

HdyHeaderBarExt, [trait@gtk::prelude::ContainerExt], [trait@gtk::prelude::WidgetExt], [trait@glib::ObjectExt], [trait@gtk::prelude::BuildableExt]

Implementations

impl HeaderBar

pub const NONE: Option<&'static HeaderBar> = None

pub fn new() -> HeaderBar

Creates a new HeaderBar.

Returns

the newly created HeaderBar.

pub fn builder() -> HeaderBarBuilder

Creates a new builder-pattern struct instance to construct HeaderBar objects.

This method returns an instance of HeaderBarBuilder which can be used to create HeaderBar objects.

Trait Implementations

impl Clone for HeaderBar

fn clone(&self) -> Self

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for HeaderBar

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for HeaderBar

fn default() -> Self

Returns the “default value” for a type.

impl Display for HeaderBar

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl HasParamSpec for HeaderBar

type ParamSpec = ParamSpecObject

type SetValue = HeaderBar

Preferred value to be used as setter for the associated ParamSpec.

type BuilderFn = fn(_: &str) -> ParamSpecObjectBuilder<'_, HeaderBar>

fn param_spec_builder() -> Self::BuilderFn

impl Hash for HeaderBar

fn hash<H>(&self, state: &mut H)

where H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for HeaderBar

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized + PartialOrd,

Restrict a value to a certain interval.

impl ParentClassIs for HeaderBar

type Parent = Container

impl<OT: ObjectType> PartialEq<OT> for HeaderBar

fn eq(&self, other: &OT) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<OT: ObjectType> PartialOrd<OT> for HeaderBar

fn partial_cmp(&self, other: &OT) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl StaticType for HeaderBar

fn static_type() -> Type

Returns the type identifier of Self.

impl Eq for HeaderBar

impl IsA<Buildable> for HeaderBar

impl IsA<Container> for HeaderBar

impl IsA<Widget> for HeaderBar