gtk4/auto/drawing_area.rs
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// This file was generated by gir (https://github.com/gtk-rs/gir)
// from gir-files (https://github.com/gtk-rs/gir-files)
// DO NOT EDIT
use crate::{
ffi, Accessible, AccessibleRole, Align, Buildable, ConstraintTarget, LayoutManager, Overflow,
Widget,
};
use glib::{
prelude::*,
signal::{connect_raw, SignalHandlerId},
translate::*,
};
use std::boxed::Box as Box_;
glib::wrapper! {
/// [`DrawingArea`][crate::DrawingArea] is a widget that allows drawing with cairo.
///
/// 
///
/// It’s essentially a blank widget; you can draw on it. After
/// creating a drawing area, the application may want to connect to:
///
/// - The [`realize`][struct@crate::Widget#realize] signal to take any necessary actions
/// when the widget is instantiated on a particular display.
/// (Create GDK resources in response to this signal.)
///
/// - The [`resize`][struct@crate::DrawingArea#resize] signal to take any necessary
/// actions when the widget changes size.
///
/// - Call [`DrawingAreaExtManual::set_draw_func()`][crate::prelude::DrawingAreaExtManual::set_draw_func()] to handle redrawing the
/// contents of the widget.
///
/// The following code portion demonstrates using a drawing
/// area to display a circle in the normal widget foreground
/// color.
///
/// ## Simple GtkDrawingArea usage
///
/// **⚠️ The following code is in c ⚠️**
///
/// ```c
/// static void
/// draw_function (GtkDrawingArea *area,
/// cairo_t *cr,
/// int width,
/// int height,
/// gpointer data)
/// {
/// GdkRGBA color;
///
/// cairo_arc (cr,
/// width / 2.0, height / 2.0,
/// MIN (width, height) / 2.0,
/// 0, 2 * G_PI);
///
/// gtk_widget_get_color (GTK_WIDGET (area),
/// &color);
/// gdk_cairo_set_source_rgba (cr, &color);
///
/// cairo_fill (cr);
/// }
///
/// int
/// main (int argc, char **argv)
/// {
/// gtk_init ();
///
/// GtkWidget *area = gtk_drawing_area_new ();
/// gtk_drawing_area_set_content_width (GTK_DRAWING_AREA (area), 100);
/// gtk_drawing_area_set_content_height (GTK_DRAWING_AREA (area), 100);
/// gtk_drawing_area_set_draw_func (GTK_DRAWING_AREA (area),
/// draw_function,
/// NULL, NULL);
/// return 0;
/// }
/// ```
///
/// The draw function is normally called when a drawing area first comes
/// onscreen, or when it’s covered by another window and then uncovered.
/// You can also force a redraw by adding to the “damage region” of the
/// drawing area’s window using [`WidgetExt::queue_draw()`][crate::prelude::WidgetExt::queue_draw()].
/// This will cause the drawing area to call the draw function again.
///
/// The available routines for drawing are documented in the
/// [Cairo documentation](https://www.cairographics.org/manual/); GDK
/// offers additional API to integrate with Cairo, like `cairo_set_source_rgba()`
/// or `cairo_set_source_pixbuf()`.
///
/// To receive mouse events on a drawing area, you will need to use
/// event controllers. To receive keyboard events, you will need to set
/// the “can-focus” property on the drawing area, and you should probably
/// draw some user-visible indication that the drawing area is focused.
///
/// If you need more complex control over your widget, you should consider
/// creating your own [`Widget`][crate::Widget] subclass.
///
/// ## Properties
///
///
/// #### `content-height`
/// The content height.
///
/// Readable | Writeable
///
///
/// #### `content-width`
/// The content width.
///
/// Readable | Writeable
/// <details><summary><h4>Widget</h4></summary>
///
///
/// #### `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`][struct@crate::Widget#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`][crate::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()`][crate::prelude::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()`][crate::prelude::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()`][crate::prelude::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()`][crate::prelude::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`][crate::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()`][crate::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`][struct@crate::Widget#has-tooltip] will automatically be set to [`true`]
/// and there will be taken care of [`query-tooltip`][struct@crate::Widget#query-tooltip] in
/// the default signal handler.
///
/// Note that if both [`tooltip-text`][struct@crate::Widget#tooltip-text] and
/// [`tooltip-markup`][struct@crate::Widget#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()`][crate::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`][struct@crate::Widget#has-tooltip] will automatically be set to [`true`]
/// and there will be taken care of [`query-tooltip`][struct@crate::Widget#query-tooltip] in
/// the default signal handler.
///
/// Note that if both [`tooltip-text`][struct@crate::Widget#tooltip-text] and
/// [`tooltip-markup`][struct@crate::Widget#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
/// </details>
/// <details><summary><h4>Accessible</h4></summary>
///
///
/// #### `accessible-role`
/// The accessible role of the given [`Accessible`][crate::Accessible] implementation.
///
/// The accessible role cannot be changed once set.
///
/// Readable | Writeable
/// </details>
///
/// ## Signals
///
///
/// #### `resize`
/// Emitted once when the widget is realized, and then each time the widget
/// is changed while realized.
///
/// This is useful in order to keep state up to date with the widget size,
/// like for instance a backing surface.
///
///
/// <details><summary><h4>Widget</h4></summary>
///
///
/// #### `destroy`
/// Signals that all holders of a reference to the widget should release
/// the reference that they hold.
///
/// May result in finalization of the widget if all references are released.
///
/// This signal is not suitable for saving widget state.
///
///
///
///
/// #### `direction-changed`
/// Emitted when the text direction of a widget changes.
///
///
///
///
/// #### `hide`
/// Emitted when @widget is hidden.
///
///
///
///
/// #### `keynav-failed`
/// Emitted if keyboard navigation fails.
///
/// See [`WidgetExt::keynav_failed()`][crate::prelude::WidgetExt::keynav_failed()] for details.
///
///
///
///
/// #### `map`
/// Emitted when @widget is going to be mapped.
///
/// A widget is mapped when the widget is visible (which is controlled with
/// [`visible`][struct@crate::Widget#visible]) and all its parents up to the toplevel widget
/// are also visible.
///
/// The ::map signal can be used to determine whether a widget will be drawn,
/// for instance it can resume an animation that was stopped during the
/// emission of [`unmap`][struct@crate::Widget#unmap].
///
///
///
///
/// #### `mnemonic-activate`
/// Emitted when a widget is activated via a mnemonic.
///
/// The default handler for this signal activates @widget if @group_cycling
/// is [`false`], or just makes @widget grab focus if @group_cycling is [`true`].
///
///
///
///
/// #### `move-focus`
/// Emitted when the focus is moved.
///
/// The ::move-focus signal is a [keybinding signal](class.SignalAction.html).
///
/// The default bindings for this signal are <kbd>Tab</kbd> to move forward,
/// and <kbd>Shift</kbd>+<kbd>Tab</kbd> to move backward.
///
/// Action
///
///
/// #### `query-tooltip`
/// Emitted when the widget’s tooltip is about to be shown.
///
/// This happens when the [`has-tooltip`][struct@crate::Widget#has-tooltip] property
/// is [`true`] and the hover timeout has expired with the cursor hovering
/// "above" @widget; or emitted when @widget got focus in keyboard mode.
///
/// Using the given coordinates, the signal handler should determine
/// whether a tooltip should be shown for @widget. If this is the case
/// [`true`] should be returned, [`false`] otherwise. Note that if
/// @keyboard_mode is [`true`], the values of @x and @y are undefined and
/// should not be used.
///
/// The signal handler is free to manipulate @tooltip with the therefore
/// destined function calls.
///
///
///
///
/// #### `realize`
/// Emitted when @widget is associated with a [`gdk::Surface`][crate::gdk::Surface].
///
/// This means that [`WidgetExt::realize()`][crate::prelude::WidgetExt::realize()] has been called
/// or the widget has been mapped (that is, it is going to be drawn).
///
///
///
///
/// #### `show`
/// Emitted when @widget is shown.
///
///
///
///
/// #### `state-flags-changed`
/// Emitted when the widget state changes.
///
/// See [`WidgetExt::state_flags()`][crate::prelude::WidgetExt::state_flags()].
///
///
///
///
/// #### `unmap`
/// Emitted when @widget is going to be unmapped.
///
/// A widget is unmapped when either it or any of its parents up to the
/// toplevel widget have been set as hidden.
///
/// As ::unmap indicates that a widget will not be shown any longer,
/// it can be used to, for example, stop an animation on the widget.
///
///
///
///
/// #### `unrealize`
/// Emitted when the [`gdk::Surface`][crate::gdk::Surface] associated with @widget is destroyed.
///
/// This means that [`WidgetExt::unrealize()`][crate::prelude::WidgetExt::unrealize()] has been called
/// or the widget has been unmapped (that is, it is going to be hidden).
///
///
/// </details>
///
/// # Implements
///
/// [`DrawingAreaExt`][trait@crate::prelude::DrawingAreaExt], [`WidgetExt`][trait@crate::prelude::WidgetExt], [`trait@glib::ObjectExt`], [`AccessibleExt`][trait@crate::prelude::AccessibleExt], [`BuildableExt`][trait@crate::prelude::BuildableExt], [`ConstraintTargetExt`][trait@crate::prelude::ConstraintTargetExt], [`DrawingAreaExtManual`][trait@crate::prelude::DrawingAreaExtManual], [`WidgetExtManual`][trait@crate::prelude::WidgetExtManual], [`AccessibleExtManual`][trait@crate::prelude::AccessibleExtManual]
#[doc(alias = "GtkDrawingArea")]
pub struct DrawingArea(Object<ffi::GtkDrawingArea, ffi::GtkDrawingAreaClass>) @extends Widget, @implements Accessible, Buildable, ConstraintTarget;
match fn {
type_ => || ffi::gtk_drawing_area_get_type(),
}
}
impl DrawingArea {
pub const NONE: Option<&'static DrawingArea> = None;
/// Creates a new drawing area.
///
/// # Returns
///
/// a new [`DrawingArea`][crate::DrawingArea]
#[doc(alias = "gtk_drawing_area_new")]
pub fn new() -> DrawingArea {
assert_initialized_main_thread!();
unsafe { Widget::from_glib_none(ffi::gtk_drawing_area_new()).unsafe_cast() }
}
// rustdoc-stripper-ignore-next
/// Creates a new builder-pattern struct instance to construct [`DrawingArea`] objects.
///
/// This method returns an instance of [`DrawingAreaBuilder`](crate::builders::DrawingAreaBuilder) which can be used to create [`DrawingArea`] objects.
pub fn builder() -> DrawingAreaBuilder {
DrawingAreaBuilder::new()
}
}
impl Default for DrawingArea {
fn default() -> Self {
Self::new()
}
}
// rustdoc-stripper-ignore-next
/// A [builder-pattern] type to construct [`DrawingArea`] objects.
///
/// [builder-pattern]: https://doc.rust-lang.org/1.0.0/style/ownership/builders.html
#[must_use = "The builder must be built to be used"]
pub struct DrawingAreaBuilder {
builder: glib::object::ObjectBuilder<'static, DrawingArea>,
}
impl DrawingAreaBuilder {
fn new() -> Self {
Self {
builder: glib::object::Object::builder(),
}
}
/// The content height.
pub fn content_height(self, content_height: i32) -> Self {
Self {
builder: self.builder.property("content-height", content_height),
}
}
/// The content width.
pub fn content_width(self, content_width: i32) -> Self {
Self {
builder: self.builder.property("content-width", content_width),
}
}
/// 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.
pub fn can_focus(self, can_focus: bool) -> Self {
Self {
builder: self.builder.property("can-focus", can_focus),
}
}
/// Whether the widget can receive pointer events.
pub fn can_target(self, can_target: bool) -> Self {
Self {
builder: self.builder.property("can-target", can_target),
}
}
/// A list of css classes applied to this widget.
pub fn css_classes(self, css_classes: impl Into<glib::StrV>) -> Self {
Self {
builder: self.builder.property("css-classes", css_classes.into()),
}
}
/// 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.
pub fn css_name(self, css_name: impl Into<glib::GString>) -> Self {
Self {
builder: self.builder.property("css-name", css_name.into()),
}
}
/// The cursor used by @widget.
pub fn cursor(self, cursor: &gdk::Cursor) -> Self {
Self {
builder: self.builder.property("cursor", cursor.clone()),
}
}
/// Whether the widget should grab focus when it is clicked with the mouse.
///
/// This property is only relevant for widgets that can take focus.
pub fn focus_on_click(self, focus_on_click: bool) -> Self {
Self {
builder: self.builder.property("focus-on-click", focus_on_click),
}
}
/// Whether this widget itself will accept the input focus.
pub fn focusable(self, focusable: bool) -> Self {
Self {
builder: self.builder.property("focusable", focusable),
}
}
/// How to distribute horizontal space if widget gets extra space.
pub fn halign(self, halign: Align) -> Self {
Self {
builder: self.builder.property("halign", halign),
}
}
/// 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`][struct@crate::Widget#query-tooltip] to
/// determine whether it will provide a tooltip or not.
pub fn has_tooltip(self, has_tooltip: bool) -> Self {
Self {
builder: self.builder.property("has-tooltip", has_tooltip),
}
}
/// Override for height request of the widget.
///
/// If this is -1, the natural request will be used.
pub fn height_request(self, height_request: i32) -> Self {
Self {
builder: self.builder.property("height-request", height_request),
}
}
/// Whether to expand horizontally.
pub fn hexpand(self, hexpand: bool) -> Self {
Self {
builder: self.builder.property("hexpand", hexpand),
}
}
/// Whether to use the `hexpand` property.
pub fn hexpand_set(self, hexpand_set: bool) -> Self {
Self {
builder: self.builder.property("hexpand-set", hexpand_set),
}
}
/// The [`LayoutManager`][crate::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.
pub fn layout_manager(self, layout_manager: &impl IsA<LayoutManager>) -> Self {
Self {
builder: self
.builder
.property("layout-manager", layout_manager.clone().upcast()),
}
}
/// 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()`][crate::prelude::WidgetExt::set_size_request()] for example.
pub fn margin_bottom(self, margin_bottom: i32) -> Self {
Self {
builder: self.builder.property("margin-bottom", margin_bottom),
}
}
/// 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()`][crate::prelude::WidgetExt::set_size_request()] for example.
pub fn margin_end(self, margin_end: i32) -> Self {
Self {
builder: self.builder.property("margin-end", margin_end),
}
}
/// 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()`][crate::prelude::WidgetExt::set_size_request()] for example.
pub fn margin_start(self, margin_start: i32) -> Self {
Self {
builder: self.builder.property("margin-start", margin_start),
}
}
/// 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()`][crate::prelude::WidgetExt::set_size_request()] for example.
pub fn margin_top(self, margin_top: i32) -> Self {
Self {
builder: self.builder.property("margin-top", margin_top),
}
}
/// The name of the widget.
pub fn name(self, name: impl Into<glib::GString>) -> Self {
Self {
builder: self.builder.property("name", name.into()),
}
}
/// The requested opacity of the widget.
pub fn opacity(self, opacity: f64) -> Self {
Self {
builder: self.builder.property("opacity", opacity),
}
}
/// 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.
pub fn overflow(self, overflow: Overflow) -> Self {
Self {
builder: self.builder.property("overflow", overflow),
}
}
/// Whether the widget will receive the default action when it is focused.
pub fn receives_default(self, receives_default: bool) -> Self {
Self {
builder: self.builder.property("receives-default", receives_default),
}
}
/// Whether the widget responds to input.
pub fn sensitive(self, sensitive: bool) -> Self {
Self {
builder: self.builder.property("sensitive", sensitive),
}
}
/// Sets the text of tooltip to be the given string, which is marked up
/// with Pango markup.
///
/// Also see [`Tooltip::set_markup()`][crate::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`][struct@crate::Widget#has-tooltip] will automatically be set to [`true`]
/// and there will be taken care of [`query-tooltip`][struct@crate::Widget#query-tooltip] in
/// the default signal handler.
///
/// Note that if both [`tooltip-text`][struct@crate::Widget#tooltip-text] and
/// [`tooltip-markup`][struct@crate::Widget#tooltip-markup] are set, the last one wins.
pub fn tooltip_markup(self, tooltip_markup: impl Into<glib::GString>) -> Self {
Self {
builder: self
.builder
.property("tooltip-markup", tooltip_markup.into()),
}
}
/// Sets the text of tooltip to be the given string.
///
/// Also see [`Tooltip::set_text()`][crate::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`][struct@crate::Widget#has-tooltip] will automatically be set to [`true`]
/// and there will be taken care of [`query-tooltip`][struct@crate::Widget#query-tooltip] in
/// the default signal handler.
///
/// Note that if both [`tooltip-text`][struct@crate::Widget#tooltip-text] and
/// [`tooltip-markup`][struct@crate::Widget#tooltip-markup] are set, the last one wins.
pub fn tooltip_text(self, tooltip_text: impl Into<glib::GString>) -> Self {
Self {
builder: self.builder.property("tooltip-text", tooltip_text.into()),
}
}
/// How to distribute vertical space if widget gets extra space.
pub fn valign(self, valign: Align) -> Self {
Self {
builder: self.builder.property("valign", valign),
}
}
/// Whether to expand vertically.
pub fn vexpand(self, vexpand: bool) -> Self {
Self {
builder: self.builder.property("vexpand", vexpand),
}
}
/// Whether to use the `vexpand` property.
pub fn vexpand_set(self, vexpand_set: bool) -> Self {
Self {
builder: self.builder.property("vexpand-set", vexpand_set),
}
}
/// Whether the widget is visible.
pub fn visible(self, visible: bool) -> Self {
Self {
builder: self.builder.property("visible", visible),
}
}
/// Override for width request of the widget.
///
/// If this is -1, the natural request will be used.
pub fn width_request(self, width_request: i32) -> Self {
Self {
builder: self.builder.property("width-request", width_request),
}
}
/// The accessible role of the given [`Accessible`][crate::Accessible] implementation.
///
/// The accessible role cannot be changed once set.
pub fn accessible_role(self, accessible_role: AccessibleRole) -> Self {
Self {
builder: self.builder.property("accessible-role", accessible_role),
}
}
// rustdoc-stripper-ignore-next
/// Build the [`DrawingArea`].
#[must_use = "Building the object from the builder is usually expensive and is not expected to have side effects"]
pub fn build(self) -> DrawingArea {
assert_initialized_main_thread!();
self.builder.build()
}
}
/// Trait containing all [`struct@DrawingArea`] methods.
///
/// # Implementors
///
/// [`DrawingArea`][struct@crate::DrawingArea]
pub trait DrawingAreaExt: IsA<DrawingArea> + 'static {
/// Retrieves the content height of the [`DrawingArea`][crate::DrawingArea].
///
/// # Returns
///
/// The height requested for content of the drawing area
#[doc(alias = "gtk_drawing_area_get_content_height")]
#[doc(alias = "get_content_height")]
#[doc(alias = "content-height")]
fn content_height(&self) -> i32 {
unsafe { ffi::gtk_drawing_area_get_content_height(self.as_ref().to_glib_none().0) }
}
/// Retrieves the content width of the [`DrawingArea`][crate::DrawingArea].
///
/// # Returns
///
/// The width requested for content of the drawing area
#[doc(alias = "gtk_drawing_area_get_content_width")]
#[doc(alias = "get_content_width")]
#[doc(alias = "content-width")]
fn content_width(&self) -> i32 {
unsafe { ffi::gtk_drawing_area_get_content_width(self.as_ref().to_glib_none().0) }
}
/// Sets the desired height of the contents of the drawing area.
///
/// Note that because widgets may be allocated larger sizes than they
/// requested, it is possible that the actual height passed to your draw
/// function is larger than the height set here. You can use
/// [`WidgetExt::set_valign()`][crate::prelude::WidgetExt::set_valign()] to avoid that.
///
/// If the height is set to 0 (the default), the drawing area may disappear.
/// ## `height`
/// the height of contents
#[doc(alias = "gtk_drawing_area_set_content_height")]
#[doc(alias = "content-height")]
fn set_content_height(&self, height: i32) {
unsafe {
ffi::gtk_drawing_area_set_content_height(self.as_ref().to_glib_none().0, height);
}
}
/// Sets the desired width of the contents of the drawing area.
///
/// Note that because widgets may be allocated larger sizes than they
/// requested, it is possible that the actual width passed to your draw
/// function is larger than the width set here. You can use
/// [`WidgetExt::set_halign()`][crate::prelude::WidgetExt::set_halign()] to avoid that.
///
/// If the width is set to 0 (the default), the drawing area may disappear.
/// ## `width`
/// the width of contents
#[doc(alias = "gtk_drawing_area_set_content_width")]
#[doc(alias = "content-width")]
fn set_content_width(&self, width: i32) {
unsafe {
ffi::gtk_drawing_area_set_content_width(self.as_ref().to_glib_none().0, width);
}
}
/// Emitted once when the widget is realized, and then each time the widget
/// is changed while realized.
///
/// This is useful in order to keep state up to date with the widget size,
/// like for instance a backing surface.
/// ## `width`
/// the width of the viewport
/// ## `height`
/// the height of the viewport
#[doc(alias = "resize")]
fn connect_resize<F: Fn(&Self, i32, i32) + 'static>(&self, f: F) -> SignalHandlerId {
unsafe extern "C" fn resize_trampoline<
P: IsA<DrawingArea>,
F: Fn(&P, i32, i32) + 'static,
>(
this: *mut ffi::GtkDrawingArea,
width: std::ffi::c_int,
height: std::ffi::c_int,
f: glib::ffi::gpointer,
) {
let f: &F = &*(f as *const F);
f(
DrawingArea::from_glib_borrow(this).unsafe_cast_ref(),
width,
height,
)
}
unsafe {
let f: Box_<F> = Box_::new(f);
connect_raw(
self.as_ptr() as *mut _,
b"resize\0".as_ptr() as *const _,
Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
resize_trampoline::<Self, F> as *const (),
)),
Box_::into_raw(f),
)
}
}
#[doc(alias = "content-height")]
fn connect_content_height_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
unsafe extern "C" fn notify_content_height_trampoline<
P: IsA<DrawingArea>,
F: Fn(&P) + 'static,
>(
this: *mut ffi::GtkDrawingArea,
_param_spec: glib::ffi::gpointer,
f: glib::ffi::gpointer,
) {
let f: &F = &*(f as *const F);
f(DrawingArea::from_glib_borrow(this).unsafe_cast_ref())
}
unsafe {
let f: Box_<F> = Box_::new(f);
connect_raw(
self.as_ptr() as *mut _,
b"notify::content-height\0".as_ptr() as *const _,
Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
notify_content_height_trampoline::<Self, F> as *const (),
)),
Box_::into_raw(f),
)
}
}
#[doc(alias = "content-width")]
fn connect_content_width_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
unsafe extern "C" fn notify_content_width_trampoline<
P: IsA<DrawingArea>,
F: Fn(&P) + 'static,
>(
this: *mut ffi::GtkDrawingArea,
_param_spec: glib::ffi::gpointer,
f: glib::ffi::gpointer,
) {
let f: &F = &*(f as *const F);
f(DrawingArea::from_glib_borrow(this).unsafe_cast_ref())
}
unsafe {
let f: Box_<F> = Box_::new(f);
connect_raw(
self.as_ptr() as *mut _,
b"notify::content-width\0".as_ptr() as *const _,
Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
notify_content_width_trampoline::<Self, F> as *const (),
)),
Box_::into_raw(f),
)
}
}
}
impl<O: IsA<DrawingArea>> DrawingAreaExt for O {}