gtk4/auto/

drag_icon.rs

// 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, Buildable, ConstraintTarget, Native, Root, Widget};
use glib::{
    prelude::*,
    signal::{connect_raw, SignalHandlerId},
    translate::*,
};
use std::boxed::Box as Box_;

glib::wrapper! {
    /// [`DragIcon`][crate::DragIcon] is a [`Root`][crate::Root] implementation for drag icons.
    ///
    /// A drag icon moves with the pointer during a Drag-and-Drop operation
    /// and is destroyed when the drag ends.
    ///
    /// To set up a drag icon and associate it with an ongoing drag operation,
    /// use [`for_drag()`][Self::for_drag()] to get the icon for a drag. You can
    /// then use it like any other widget and use [`set_child()`][Self::set_child()]
    /// to set whatever widget should be used for the drag icon.
    ///
    /// Keep in mind that drag icons do not allow user input.
    ///
    /// ## Properties
    ///
    ///
    /// #### `child`
    ///  The widget to display as drag icon.
    ///
    /// 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>
    ///
    /// # Implements
    ///
    /// [`WidgetExt`][trait@crate::prelude::WidgetExt], [`trait@glib::ObjectExt`], [`AccessibleExt`][trait@crate::prelude::AccessibleExt], [`BuildableExt`][trait@crate::prelude::BuildableExt], [`ConstraintTargetExt`][trait@crate::prelude::ConstraintTargetExt], [`NativeExt`][trait@crate::prelude::NativeExt], [`RootExt`][trait@crate::prelude::RootExt], [`WidgetExtManual`][trait@crate::prelude::WidgetExtManual], [`AccessibleExtManual`][trait@crate::prelude::AccessibleExtManual]
    #[doc(alias = "GtkDragIcon")]
    pub struct DragIcon(Object<ffi::GtkDragIcon, ffi::GtkDragIconClass>) @extends Widget, @implements Accessible, Buildable, ConstraintTarget, Native, Root;

    match fn {
        type_ => || ffi::gtk_drag_icon_get_type(),
    }
}

impl DragIcon {
    /// Gets the [`DragIcon`][crate::DragIcon] in use with @drag.
    ///
    /// If no drag icon exists yet, a new one will be created
    /// and shown.
    /// ## `drag`
    /// a [`gdk::Drag`][crate::gdk::Drag]
    ///
    /// # Returns
    ///
    /// the [`DragIcon`][crate::DragIcon]
    #[doc(alias = "gtk_drag_icon_get_for_drag")]
    #[doc(alias = "get_for_drag")]
    pub fn for_drag(drag: &gdk::Drag) -> DragIcon {
        assert_initialized_main_thread!();
        unsafe {
            Widget::from_glib_none(ffi::gtk_drag_icon_get_for_drag(drag.to_glib_none().0))
                .unsafe_cast()
        }
    }

    /// Gets the widget currently used as drag icon.
    ///
    /// # Returns
    ///
    /// The drag icon
    #[doc(alias = "gtk_drag_icon_get_child")]
    #[doc(alias = "get_child")]
    pub fn child(&self) -> Option<Widget> {
        unsafe { from_glib_none(ffi::gtk_drag_icon_get_child(self.to_glib_none().0)) }
    }

    /// Sets the widget to display as the drag icon.
    /// ## `child`
    /// a [`Widget`][crate::Widget]
    #[doc(alias = "gtk_drag_icon_set_child")]
    #[doc(alias = "child")]
    pub fn set_child(&self, child: Option<&impl IsA<Widget>>) {
        unsafe {
            ffi::gtk_drag_icon_set_child(
                self.to_glib_none().0,
                child.map(|p| p.as_ref()).to_glib_none().0,
            );
        }
    }

    /// Creates a widget that can be used as a drag icon for the given
    /// @value.
    ///
    /// Supported types include strings, [`gdk::RGBA`][crate::gdk::RGBA] and [`TextBuffer`][crate::TextBuffer].
    /// If GTK does not know how to create a widget for a given value,
    /// it will return [`None`].
    ///
    /// This method is used to set the default drag icon on drag-and-drop
    /// operations started by [`DragSource`][crate::DragSource], so you don't need to set
    /// a drag icon using this function there.
    /// ## `value`
    /// a `GValue`
    ///
    /// # Returns
    ///
    /// A new [`Widget`][crate::Widget]
    ///   for displaying @value as a drag icon.
    #[doc(alias = "gtk_drag_icon_create_widget_for_value")]
    pub fn create_widget_for_value(value: &glib::Value) -> Option<Widget> {
        assert_initialized_main_thread!();
        unsafe {
            from_glib_full(ffi::gtk_drag_icon_create_widget_for_value(
                value.to_glib_none().0,
            ))
        }
    }

    /// Creates a [`DragIcon`][crate::DragIcon] that shows @paintable, and associates
    /// it with the drag operation.
    ///
    /// The hotspot position on the paintable is aligned with the
    /// hotspot of the cursor.
    /// ## `drag`
    /// a [`gdk::Drag`][crate::gdk::Drag]
    /// ## `paintable`
    /// a [`gdk::Paintable`][crate::gdk::Paintable] to display
    /// ## `hot_x`
    /// X coordinate of the hotspot
    /// ## `hot_y`
    /// Y coordinate of the hotspot
    #[doc(alias = "gtk_drag_icon_set_from_paintable")]
    pub fn set_from_paintable(
        drag: &gdk::Drag,
        paintable: &impl IsA<gdk::Paintable>,
        hot_x: i32,
        hot_y: i32,
    ) {
        assert_initialized_main_thread!();
        unsafe {
            ffi::gtk_drag_icon_set_from_paintable(
                drag.to_glib_none().0,
                paintable.as_ref().to_glib_none().0,
                hot_x,
                hot_y,
            );
        }
    }

    #[doc(alias = "child")]
    pub fn connect_child_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_child_trampoline<F: Fn(&DragIcon) + 'static>(
            this: *mut ffi::GtkDragIcon,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(&from_glib_borrow(this))
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::child\0".as_ptr() as *const _,
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_child_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }
}