gtk/auto/

icon_view.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::{
    Adjustment, Align, Buildable, CellArea, CellLayout, CellRenderer, Container,
    IconViewDropPosition, MovementStep, Orientation, ResizeMode, Scrollable, ScrollablePolicy,
    SelectionMode, Tooltip, TreeIter, TreeModel, TreePath, Widget, ffi,
};
use glib::{
    object::ObjectType as _,
    prelude::*,
    signal::{SignalHandlerId, connect_raw},
    translate::*,
};
use std::boxed::Box as Box_;

glib::wrapper! {
    /// [`IconView`][crate::IconView] provides an alternative view on a [`TreeModel`][crate::TreeModel].
    /// It displays the model as a grid of icons with labels. Like
    /// [`TreeView`][crate::TreeView], it allows to select one or multiple items
    /// (depending on the selection mode, see [`IconViewExt::set_selection_mode()`][crate::prelude::IconViewExt::set_selection_mode()]).
    /// In addition to selection with the arrow keys, [`IconView`][crate::IconView] supports
    /// rubberband selection, which is controlled by dragging the pointer.
    ///
    /// Note that if the tree model is backed by an actual tree store (as
    /// opposed to a flat list where the mapping to icons is obvious),
    /// [`IconView`][crate::IconView] will only display the first level of the tree and
    /// ignore the tree’s branches.
    ///
    /// # CSS nodes
    ///
    ///
    ///
    /// **⚠️ The following code is in plain ⚠️**
    ///
    /// ```plain
    /// iconview.view
    /// ╰── [rubberband]
    /// ```
    ///
    /// GtkIconView has a single CSS node with name iconview and style class .view.
    /// For rubberband selection, a subnode with name rubberband is used.
    ///
    /// ## Properties
    ///
    ///
    /// #### `activate-on-single-click`
    ///  The activate-on-single-click property specifies whether the "item-activated" signal
    /// will be emitted after a single click.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `cell-area`
    ///  The [`CellArea`][crate::CellArea] used to layout cell renderers for this view.
    ///
    /// If no area is specified when creating the icon view with [`IconView::with_area()`][crate::IconView::with_area()]
    /// a [`CellAreaBox`][crate::CellAreaBox] will be used.
    ///
    /// Readable | Writable | Construct Only
    ///
    ///
    /// #### `column-spacing`
    ///  The column-spacing property specifies the space which is inserted between
    /// the columns of the icon view.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `columns`
    ///  The columns property contains the number of the columns in which the
    /// items should be displayed. If it is -1, the number of columns will
    /// be chosen automatically to fill the available area.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `item-orientation`
    ///  The item-orientation property specifies how the cells (i.e. the icon and
    /// the text) of the item are positioned relative to each other.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `item-padding`
    ///  The item-padding property specifies the padding around each
    /// of the icon view's item.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `item-width`
    ///  The item-width property specifies the width to use for each item.
    /// If it is set to -1, the icon view will automatically determine a
    /// suitable item size.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `margin`
    ///  The margin property specifies the space which is inserted
    /// at the edges of the icon view.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `markup-column`
    ///  The ::markup-column property contains the number of the model column
    /// containing markup information to be displayed. The markup column must be
    /// of type `G_TYPE_STRING`. If this property and the :text-column property
    /// are both set to column numbers, it overrides the text column.
    /// If both are set to -1, no texts are displayed.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `model`
    ///  Readable | Writable
    ///
    ///
    /// #### `pixbuf-column`
    ///  The ::pixbuf-column property contains the number of the model column
    /// containing the pixbufs which are displayed. The pixbuf column must be
    /// of type `GDK_TYPE_PIXBUF`. Setting this property to -1 turns off the
    /// display of pixbufs.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `reorderable`
    ///  The reorderable property specifies if the items can be reordered
    /// by DND.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `row-spacing`
    ///  The row-spacing property specifies the space which is inserted between
    /// the rows of the icon view.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `selection-mode`
    ///  The ::selection-mode property specifies the selection mode of
    /// icon view. If the mode is [`SelectionMode::Multiple`][crate::SelectionMode::Multiple], rubberband selection
    /// is enabled, for the other modes, only keyboard selection is possible.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `spacing`
    ///  The spacing property specifies the space which is inserted between
    /// the cells (i.e. the icon and the text) of an item.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `text-column`
    ///  The ::text-column property contains the number of the model column
    /// containing the texts which are displayed. The text column must be
    /// of type `G_TYPE_STRING`. If this property and the :markup-column
    /// property are both set to -1, no texts are displayed.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `tooltip-column`
    ///  Readable | Writable
    /// <details><summary><h4>Container</h4></summary>
    ///
    ///
    /// #### `border-width`
    ///  Readable | Writable
    ///
    ///
    /// #### `child`
    ///  Writable
    ///
    ///
    /// #### `resize-mode`
    ///  Readable | Writable
    /// </details>
    /// <details><summary><h4>Widget</h4></summary>
    ///
    ///
    /// #### `app-paintable`
    ///  Readable | Writable
    ///
    ///
    /// #### `can-default`
    ///  Readable | Writable
    ///
    ///
    /// #### `can-focus`
    ///  Readable | Writable
    ///
    ///
    /// #### `composite-child`
    ///  Readable
    ///
    ///
    /// #### `double-buffered`
    ///  Whether the widget is double buffered.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `events`
    ///  Readable | Writable
    ///
    ///
    /// #### `expand`
    ///  Whether to expand in both directions. Setting this sets both [`hexpand`][struct@crate::Widget#hexpand] and [`vexpand`][struct@crate::Widget#vexpand]
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `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 | Writable
    ///
    ///
    /// #### `halign`
    ///  How to distribute horizontal space if widget gets extra space, see [`Align`][crate::Align]
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `has-default`
    ///  Readable | Writable
    ///
    ///
    /// #### `has-focus`
    ///  Readable | Writable
    ///
    ///
    /// #### `has-tooltip`
    ///  Enables or disables the emission of [`query-tooltip`][struct@crate::Widget#query-tooltip] 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.
    ///
    /// 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 | Writable
    ///
    ///
    /// #### `height-request`
    ///  Readable | Writable
    ///
    ///
    /// #### `hexpand`
    ///  Whether to expand horizontally. See [`WidgetExt::set_hexpand()`][crate::prelude::WidgetExt::set_hexpand()].
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `hexpand-set`
    ///  Whether to use the [`hexpand`][struct@crate::Widget#hexpand] property. See [`WidgetExt::is_hexpand_set()`][crate::prelude::WidgetExt::is_hexpand_set()].
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `is-focus`
    ///  Readable | Writable
    ///
    ///
    /// #### `margin`
    ///  Sets all four sides' margin at once. If read, returns max
    /// margin on any side.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `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 | Writable
    ///
    ///
    /// #### `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 | Writable
    ///
    ///
    /// #### `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
    /// [`WidgetExt::set_size_request()`][crate::prelude::WidgetExt::set_size_request()] for example.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `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
    /// [`WidgetExt::set_size_request()`][crate::prelude::WidgetExt::set_size_request()] for example.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `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 | Writable
    ///
    ///
    /// #### `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 | Writable
    ///
    ///
    /// #### `name`
    ///  Readable | Writable
    ///
    ///
    /// #### `no-show-all`
    ///  Readable | Writable
    ///
    ///
    /// #### `opacity`
    ///  The requested opacity of the widget. See [`WidgetExt::set_opacity()`][crate::prelude::WidgetExt::set_opacity()] for
    /// more details about window opacity.
    ///
    /// Before 3.8 this was only available in GtkWindow
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `parent`
    ///  Readable | Writable
    ///
    ///
    /// #### `receives-default`
    ///  Readable | Writable
    ///
    ///
    /// #### `scale-factor`
    ///  The scale factor of the widget. See [`WidgetExt::scale_factor()`][crate::prelude::WidgetExt::scale_factor()] for
    /// more details about widget scaling.
    ///
    /// Readable
    ///
    ///
    /// #### `sensitive`
    ///  Readable | Writable
    ///
    ///
    /// #### `style`
    ///  The style of the widget, which contains information about how it will look (colors, etc).
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `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 [`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 | Writable
    ///
    ///
    /// #### `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 | Writable
    ///
    ///
    /// #### `valign`
    ///  How to distribute vertical space if widget gets extra space, see [`Align`][crate::Align]
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `vexpand`
    ///  Whether to expand vertically. See [`WidgetExt::set_vexpand()`][crate::prelude::WidgetExt::set_vexpand()].
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `vexpand-set`
    ///  Whether to use the [`vexpand`][struct@crate::Widget#vexpand] property. See [`WidgetExt::is_vexpand_set()`][crate::prelude::WidgetExt::is_vexpand_set()].
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `visible`
    ///  Readable | Writable
    ///
    ///
    /// #### `width-request`
    ///  Readable | Writable
    ///
    ///
    /// #### `window`
    ///  The widget's window if it is realized, [`None`] otherwise.
    ///
    /// Readable
    /// </details>
    /// <details><summary><h4>Scrollable</h4></summary>
    ///
    ///
    /// #### `hadjustment`
    ///  Horizontal [`Adjustment`][crate::Adjustment] of the scrollable widget. This adjustment is
    /// shared between the scrollable widget and its parent.
    ///
    /// Readable | Writable | Construct
    ///
    ///
    /// #### `hscroll-policy`
    ///  Determines whether horizontal scrolling should start once the scrollable
    /// widget is allocated less than its minimum width or less than its natural width.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `vadjustment`
    ///  Verical [`Adjustment`][crate::Adjustment] of the scrollable widget. This adjustment is shared
    /// between the scrollable widget and its parent.
    ///
    /// Readable | Writable | Construct
    ///
    ///
    /// #### `vscroll-policy`
    ///  Determines whether vertical scrolling should start once the scrollable
    /// widget is allocated less than its minimum height or less than its natural height.
    ///
    /// Readable | Writable
    /// </details>
    ///
    /// ## Signals
    ///
    ///
    /// #### `activate-cursor-item`
    ///  A [keybinding signal][GtkBindingSignal]
    /// which gets emitted when the user activates the currently
    /// focused item.
    ///
    /// Applications should not connect to it, but may emit it with
    /// `g_signal_emit_by_name()` if they need to control activation
    /// programmatically.
    ///
    /// The default bindings for this signal are Space, Return and Enter.
    ///
    /// Action
    ///
    ///
    /// #### `item-activated`
    ///  The ::item-activated signal is emitted when the method
    /// [`IconViewExt::item_activated()`][crate::prelude::IconViewExt::item_activated()] is called, when the user double
    /// clicks an item with the "activate-on-single-click" property set
    /// to [`false`], or when the user single clicks an item when the
    /// "activate-on-single-click" property set to [`true`]. It is also
    /// emitted when a non-editable item is selected and one of the keys:
    /// Space, Return or Enter is pressed.
    ///
    ///
    ///
    ///
    /// #### `move-cursor`
    ///  The ::move-cursor signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which gets emitted when the user initiates a cursor movement.
    ///
    /// Applications should not connect to it, but may emit it with
    /// `g_signal_emit_by_name()` if they need to control the cursor
    /// programmatically.
    ///
    /// The default bindings for this signal include
    /// - Arrow keys which move by individual steps
    /// - Home/End keys which move to the first/last item
    /// - PageUp/PageDown which move by "pages"
    /// All of these will extend the selection when combined with
    /// the Shift modifier.
    ///
    /// Action
    ///
    ///
    /// #### `select-all`
    ///  A [keybinding signal][GtkBindingSignal]
    /// which gets emitted when the user selects all items.
    ///
    /// Applications should not connect to it, but may emit it with
    /// `g_signal_emit_by_name()` if they need to control selection
    /// programmatically.
    ///
    /// The default binding for this signal is Ctrl-a.
    ///
    /// Action
    ///
    ///
    /// #### `select-cursor-item`
    ///  A [keybinding signal][GtkBindingSignal]
    /// which gets emitted when the user selects the item that is currently
    /// focused.
    ///
    /// Applications should not connect to it, but may emit it with
    /// `g_signal_emit_by_name()` if they need to control selection
    /// programmatically.
    ///
    /// There is no default binding for this signal.
    ///
    /// Action
    ///
    ///
    /// #### `selection-changed`
    ///  The ::selection-changed signal is emitted when the selection
    /// (i.e. the set of selected items) changes.
    ///
    ///
    ///
    ///
    /// #### `toggle-cursor-item`
    ///  A [keybinding signal][GtkBindingSignal]
    /// which gets emitted when the user toggles whether the currently
    /// focused item is selected or not. The exact effect of this
    /// depend on the selection mode.
    ///
    /// Applications should not connect to it, but may emit it with
    /// `g_signal_emit_by_name()` if they need to control selection
    /// programmatically.
    ///
    /// There is no default binding for this signal is Ctrl-Space.
    ///
    /// Action
    ///
    ///
    /// #### `unselect-all`
    ///  A [keybinding signal][GtkBindingSignal]
    /// which gets emitted when the user unselects all items.
    ///
    /// Applications should not connect to it, but may emit it with
    /// `g_signal_emit_by_name()` if they need to control selection
    /// programmatically.
    ///
    /// The default binding for this signal is Ctrl-Shift-a.
    ///
    /// Action
    /// <details><summary><h4>Container</h4></summary>
    ///
    ///
    /// #### `add`
    ///
    ///
    ///
    /// #### `check-resize`
    ///
    ///
    ///
    /// #### `remove`
    ///
    ///
    ///
    /// #### `set-focus-child`
    ///
    /// </details>
    /// <details><summary><h4>Widget</h4></summary>
    ///
    ///
    /// #### `accel-closures-changed`
    ///
    ///
    ///
    /// #### `button-press-event`
    ///  The ::button-press-event signal will be emitted when a button
    /// (typically from a mouse) is pressed.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the
    /// widget needs to enable the [`gdk::EventMask::BUTTON_PRESS_MASK`][crate::gdk::EventMask::BUTTON_PRESS_MASK] mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `button-release-event`
    ///  The ::button-release-event signal will be emitted when a button
    /// (typically from a mouse) is released.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the
    /// widget needs to enable the [`gdk::EventMask::BUTTON_RELEASE_MASK`][crate::gdk::EventMask::BUTTON_RELEASE_MASK] mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `can-activate-accel`
    ///  Determines whether an accelerator that activates the signal
    /// identified by `signal_id` can currently be activated.
    /// This signal is present to allow applications and derived
    /// widgets to override the default [`Widget`][crate::Widget] handling
    /// for determining whether an accelerator can be activated.
    ///
    ///
    ///
    ///
    /// #### `child-notify`
    ///  The ::child-notify signal is emitted for each
    /// [child property][child-properties] that has
    /// changed on an object. The signal's detail holds the property name.
    ///
    /// Detailed
    ///
    ///
    /// #### `composited-changed`
    ///  The ::composited-changed signal is emitted when the composited
    /// status of `widgets` screen changes.
    /// See [`Screen::is_composited()`][crate::gdk::Screen::is_composited()].
    ///
    /// Action
    ///
    ///
    /// #### `configure-event`
    ///  The ::configure-event signal will be emitted when the size, position or
    /// stacking of the `widget`'s window has changed.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::STRUCTURE_MASK`][crate::gdk::EventMask::STRUCTURE_MASK] mask. GDK will enable this mask
    /// automatically for all new windows.
    ///
    ///
    ///
    ///
    /// #### `damage-event`
    ///  Emitted when a redirected window belonging to `widget` gets drawn into.
    /// The region/area members of the event shows what area of the redirected
    /// drawable was drawn into.
    ///
    ///
    ///
    ///
    /// #### `delete-event`
    ///  The ::delete-event signal is emitted if a user requests that
    /// a toplevel window is closed. The default handler for this signal
    /// destroys the window. Connecting [`WidgetExtManual::hide_on_delete()`][crate::prelude::WidgetExtManual::hide_on_delete()] to
    /// this signal will cause the window to be hidden instead, so that
    /// it can later be shown again without reconstructing it.
    ///
    ///
    ///
    ///
    /// #### `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.
    ///
    ///
    ///
    ///
    /// #### `destroy-event`
    ///  The ::destroy-event signal is emitted when a [`gdk::Window`][crate::gdk::Window] is destroyed.
    /// You rarely get this signal, because most widgets disconnect themselves
    /// from their window before they destroy it, so no widget owns the
    /// window at destroy time.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::STRUCTURE_MASK`][crate::gdk::EventMask::STRUCTURE_MASK] mask. GDK will enable this mask
    /// automatically for all new windows.
    ///
    ///
    ///
    ///
    /// #### `direction-changed`
    ///  The ::direction-changed signal is emitted when the text direction
    /// of a widget changes.
    ///
    ///
    ///
    ///
    /// #### `drag-begin`
    ///  The ::drag-begin signal is emitted on the drag source when a drag is
    /// started. A typical reason to connect to this signal is to set up a
    /// custom drag icon with e.g. [`WidgetExt::drag_source_set_icon_pixbuf()`][crate::prelude::WidgetExt::drag_source_set_icon_pixbuf()].
    ///
    /// Note that some widgets set up a drag icon in the default handler of
    /// this signal, so you may have to use `g_signal_connect_after()` to
    /// override what the default handler did.
    ///
    ///
    ///
    ///
    /// #### `drag-data-delete`
    ///  The ::drag-data-delete signal is emitted on the drag source when a drag
    /// with the action [`gdk::DragAction::MOVE`][crate::gdk::DragAction::MOVE] is successfully completed. The signal
    /// handler is responsible for deleting the data that has been dropped. What
    /// "delete" means depends on the context of the drag operation.
    ///
    ///
    ///
    ///
    /// #### `drag-data-get`
    ///  The ::drag-data-get signal is emitted on the drag source when the drop
    /// site requests the data which is dragged. It is the responsibility of
    /// the signal handler to fill `data` with the data in the format which
    /// is indicated by `info`. See [`SelectionData::set()`][crate::SelectionData::set()] and
    /// [`SelectionData::set_text()`][crate::SelectionData::set_text()].
    ///
    ///
    ///
    ///
    /// #### `drag-data-received`
    ///  The ::drag-data-received signal is emitted on the drop site when the
    /// dragged data has been received. If the data was received in order to
    /// determine whether the drop will be accepted, the handler is expected
    /// to call `gdk_drag_status()` and not finish the drag.
    /// If the data was received in response to a [`drag-drop`][struct@crate::Widget#drag-drop] signal
    /// (and this is the last target to be received), the handler for this
    /// signal is expected to process the received data and then call
    /// `gtk_drag_finish()`, setting the `success` parameter depending on
    /// whether the data was processed successfully.
    ///
    /// Applications must create some means to determine why the signal was emitted
    /// and therefore whether to call `gdk_drag_status()` or `gtk_drag_finish()`.
    ///
    /// The handler may inspect the selected action with
    /// [`DragContext::selected_action()`][crate::gdk::DragContext::selected_action()] before calling
    /// `gtk_drag_finish()`, e.g. to implement [`gdk::DragAction::ASK`][crate::gdk::DragAction::ASK] as
    /// shown in the following example:
    ///
    ///
    /// **⚠️ The following code is in C ⚠️**
    ///
    /// ```C
    /// void
    /// drag_data_received (GtkWidget          *widget,
    ///                     GdkDragContext     *context,
    ///                     gint                x,
    ///                     gint                y,
    ///                     GtkSelectionData   *data,
    ///                     guint               info,
    ///                     guint               time)
    /// {
    ///   if ((data->length >= 0) && (data->format == 8))
    ///     {
    ///       GdkDragAction action;
    ///
    ///       // handle data here
    ///
    ///       action = gdk_drag_context_get_selected_action (context);
    ///       if (action == GDK_ACTION_ASK)
    ///         {
    ///           GtkWidget *dialog;
    ///           gint response;
    ///
    ///           dialog = gtk_message_dialog_new (NULL,
    ///                                            GTK_DIALOG_MODAL |
    ///                                            GTK_DIALOG_DESTROY_WITH_PARENT,
    ///                                            GTK_MESSAGE_INFO,
    ///                                            GTK_BUTTONS_YES_NO,
    ///                                            "Move the data ?\n");
    ///           response = gtk_dialog_run (GTK_DIALOG (dialog));
    ///           gtk_widget_destroy (dialog);
    ///
    ///           if (response == GTK_RESPONSE_YES)
    ///             action = GDK_ACTION_MOVE;
    ///           else
    ///             action = GDK_ACTION_COPY;
    ///          }
    ///
    ///       gtk_drag_finish (context, TRUE, action == GDK_ACTION_MOVE, time);
    ///     }
    ///   else
    ///     gtk_drag_finish (context, FALSE, FALSE, time);
    ///  }
    /// ```
    ///
    ///
    ///
    ///
    /// #### `drag-drop`
    ///  The ::drag-drop signal is emitted on the drop site when the user drops
    /// the data onto the widget. The signal handler must determine whether
    /// the cursor position is in a drop zone or not. If it is not in a drop
    /// zone, it returns [`false`] and no further processing is necessary.
    /// Otherwise, the handler returns [`true`]. In this case, the handler must
    /// ensure that `gtk_drag_finish()` is called to let the source know that
    /// the drop is done. The call to `gtk_drag_finish()` can be done either
    /// directly or in a [`drag-data-received`][struct@crate::Widget#drag-data-received] handler which gets
    /// triggered by calling [`WidgetExt::drag_get_data()`][crate::prelude::WidgetExt::drag_get_data()] to receive the data for one
    /// or more of the supported targets.
    ///
    ///
    ///
    ///
    /// #### `drag-end`
    ///  The ::drag-end signal is emitted on the drag source when a drag is
    /// finished. A typical reason to connect to this signal is to undo
    /// things done in [`drag-begin`][struct@crate::Widget#drag-begin].
    ///
    ///
    ///
    ///
    /// #### `drag-failed`
    ///  The ::drag-failed signal is emitted on the drag source when a drag has
    /// failed. The signal handler may hook custom code to handle a failed DnD
    /// operation based on the type of error, it returns [`true`] is the failure has
    /// been already handled (not showing the default "drag operation failed"
    /// animation), otherwise it returns [`false`].
    ///
    ///
    ///
    ///
    /// #### `drag-leave`
    ///  The ::drag-leave signal is emitted on the drop site when the cursor
    /// leaves the widget. A typical reason to connect to this signal is to
    /// undo things done in [`drag-motion`][struct@crate::Widget#drag-motion], e.g. undo highlighting
    /// with [`WidgetExt::drag_unhighlight()`][crate::prelude::WidgetExt::drag_unhighlight()].
    ///
    ///
    /// Likewise, the [`drag-leave`][struct@crate::Widget#drag-leave] signal is also emitted before the
    /// ::drag-drop signal, for instance to allow cleaning up of a preview item
    /// created in the [`drag-motion`][struct@crate::Widget#drag-motion] signal handler.
    ///
    ///
    ///
    ///
    /// #### `drag-motion`
    ///  The ::drag-motion signal is emitted on the drop site when the user
    /// moves the cursor over the widget during a drag. The signal handler
    /// must determine whether the cursor position is in a drop zone or not.
    /// If it is not in a drop zone, it returns [`false`] and no further processing
    /// is necessary. Otherwise, the handler returns [`true`]. In this case, the
    /// handler is responsible for providing the necessary information for
    /// displaying feedback to the user, by calling `gdk_drag_status()`.
    ///
    /// If the decision whether the drop will be accepted or rejected can't be
    /// made based solely on the cursor position and the type of the data, the
    /// handler may inspect the dragged data by calling [`WidgetExt::drag_get_data()`][crate::prelude::WidgetExt::drag_get_data()] and
    /// defer the `gdk_drag_status()` call to the [`drag-data-received`][struct@crate::Widget#drag-data-received]
    /// handler. Note that you must pass [`DestDefaults::DROP`][crate::DestDefaults::DROP],
    /// [`DestDefaults::MOTION`][crate::DestDefaults::MOTION] or [`DestDefaults::ALL`][crate::DestDefaults::ALL] to [`WidgetExtManual::drag_dest_set()`][crate::prelude::WidgetExtManual::drag_dest_set()]
    /// when using the drag-motion signal that way.
    ///
    /// Also note that there is no drag-enter signal. The drag receiver has to
    /// keep track of whether he has received any drag-motion signals since the
    /// last [`drag-leave`][struct@crate::Widget#drag-leave] and if not, treat the drag-motion signal as
    /// an "enter" signal. Upon an "enter", the handler will typically highlight
    /// the drop site with [`WidgetExt::drag_highlight()`][crate::prelude::WidgetExt::drag_highlight()].
    ///
    ///
    /// **⚠️ The following code is in C ⚠️**
    ///
    /// ```C
    /// static void
    /// drag_motion (GtkWidget      *widget,
    ///              GdkDragContext *context,
    ///              gint            x,
    ///              gint            y,
    ///              guint           time)
    /// {
    ///   GdkAtom target;
    ///
    ///   PrivateData *private_data = GET_PRIVATE_DATA (widget);
    ///
    ///   if (!private_data->drag_highlight)
    ///    {
    ///      private_data->drag_highlight = 1;
    ///      gtk_drag_highlight (widget);
    ///    }
    ///
    ///   target = gtk_drag_dest_find_target (widget, context, NULL);
    ///   if (target == GDK_NONE)
    ///     gdk_drag_status (context, 0, time);
    ///   else
    ///    {
    ///      private_data->pending_status
    ///         = gdk_drag_context_get_suggested_action (context);
    ///      gtk_drag_get_data (widget, context, target, time);
    ///    }
    ///
    ///   return TRUE;
    /// }
    ///
    /// static void
    /// drag_data_received (GtkWidget        *widget,
    ///                     GdkDragContext   *context,
    ///                     gint              x,
    ///                     gint              y,
    ///                     GtkSelectionData *selection_data,
    ///                     guint             info,
    ///                     guint             time)
    /// {
    ///   PrivateData *private_data = GET_PRIVATE_DATA (widget);
    ///
    ///   if (private_data->suggested_action)
    ///    {
    ///      private_data->suggested_action = 0;
    ///
    ///      // We are getting this data due to a request in drag_motion,
    ///      // rather than due to a request in drag_drop, so we are just
    ///      // supposed to call gdk_drag_status(), not actually paste in
    ///      // the data.
    ///
    ///      str = gtk_selection_data_get_text (selection_data);
    ///      if (!data_is_acceptable (str))
    ///        gdk_drag_status (context, 0, time);
    ///      else
    ///        gdk_drag_status (context,
    ///                         private_data->suggested_action,
    ///                         time);
    ///    }
    ///   else
    ///    {
    ///      // accept the drop
    ///    }
    /// }
    /// ```
    ///
    ///
    ///
    ///
    /// #### `draw`
    ///  This signal is emitted when a widget is supposed to render itself.
    /// The `widget`'s top left corner must be painted at the origin of
    /// the passed in context and be sized to the values returned by
    /// [`WidgetExt::allocated_width()`][crate::prelude::WidgetExt::allocated_width()] and
    /// [`WidgetExt::allocated_height()`][crate::prelude::WidgetExt::allocated_height()].
    ///
    /// Signal handlers connected to this signal can modify the cairo
    /// context passed as `cr` in any way they like and don't need to
    /// restore it. The signal emission takes care of calling `cairo_save()`
    /// before and `cairo_restore()` after invoking the handler.
    ///
    /// The signal handler will get a `cr` with a clip region already set to the
    /// widget's dirty region, i.e. to the area that needs repainting. Complicated
    /// widgets that want to avoid redrawing themselves completely can get the full
    /// extents of the clip region with `gdk_cairo_get_clip_rectangle()`, or they can
    /// get a finer-grained representation of the dirty region with
    /// `cairo_copy_clip_rectangle_list()`.
    ///
    ///
    ///
    ///
    /// #### `enter-notify-event`
    ///  The ::enter-notify-event will be emitted when the pointer enters
    /// the `widget`'s window.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::ENTER_NOTIFY_MASK`][crate::gdk::EventMask::ENTER_NOTIFY_MASK] mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `event`
    ///  The GTK+ main loop will emit three signals for each GDK event delivered
    /// to a widget: one generic ::event signal, another, more specific,
    /// signal that matches the type of event delivered (e.g.
    /// [`key-press-event`][struct@crate::Widget#key-press-event]) and finally a generic
    /// [`event-after`][struct@crate::Widget#event-after] signal.
    ///
    ///
    ///
    ///
    /// #### `event-after`
    ///  After the emission of the [`event`][struct@crate::Widget#event] signal and (optionally)
    /// the second more specific signal, ::event-after will be emitted
    /// regardless of the previous two signals handlers return values.
    ///
    ///
    ///
    ///
    /// #### `focus`
    ///
    ///
    ///
    /// #### `focus-in-event`
    ///  The ::focus-in-event signal will be emitted when the keyboard focus
    /// enters the `widget`'s window.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::FOCUS_CHANGE_MASK`][crate::gdk::EventMask::FOCUS_CHANGE_MASK] mask.
    ///
    ///
    ///
    ///
    /// #### `focus-out-event`
    ///  The ::focus-out-event signal will be emitted when the keyboard focus
    /// leaves the `widget`'s window.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::FOCUS_CHANGE_MASK`][crate::gdk::EventMask::FOCUS_CHANGE_MASK] mask.
    ///
    ///
    ///
    ///
    /// #### `grab-broken-event`
    ///  Emitted when a pointer or keyboard grab on a window belonging
    /// to `widget` gets broken.
    ///
    /// On X11, this happens when the grab window becomes unviewable
    /// (i.e. it or one of its ancestors is unmapped), or if the same
    /// application grabs the pointer or keyboard again.
    ///
    ///
    ///
    ///
    /// #### `grab-focus`
    ///  Action
    ///
    ///
    /// #### `grab-notify`
    ///  The ::grab-notify signal is emitted when a widget becomes
    /// shadowed by a GTK+ grab (not a pointer or keyboard grab) on
    /// another widget, or when it becomes unshadowed due to a grab
    /// being removed.
    ///
    /// A widget is shadowed by a [`WidgetExt::grab_add()`][crate::prelude::WidgetExt::grab_add()] when the topmost
    /// grab widget in the grab stack of its window group is not
    /// its ancestor.
    ///
    ///
    ///
    ///
    /// #### `hide`
    ///  The ::hide signal is emitted when `widget` is hidden, for example with
    /// [`WidgetExt::hide()`][crate::prelude::WidgetExt::hide()].
    ///
    ///
    ///
    ///
    /// #### `hierarchy-changed`
    ///  The ::hierarchy-changed signal is emitted when the
    /// anchored state of a widget changes. A widget is
    /// “anchored” when its toplevel
    /// ancestor is a [`Window`][crate::Window]. This signal is emitted when
    /// a widget changes from un-anchored to anchored or vice-versa.
    ///
    ///
    ///
    ///
    /// #### `key-press-event`
    ///  The ::key-press-event signal is emitted when a key is pressed. The signal
    /// emission will reoccur at the key-repeat rate when the key is kept pressed.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::KEY_PRESS_MASK`][crate::gdk::EventMask::KEY_PRESS_MASK] mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `key-release-event`
    ///  The ::key-release-event signal is emitted when a key is released.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::KEY_RELEASE_MASK`][crate::gdk::EventMask::KEY_RELEASE_MASK] mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `keynav-failed`
    ///  Gets emitted if keyboard navigation fails.
    /// See [`WidgetExt::keynav_failed()`][crate::prelude::WidgetExt::keynav_failed()] for details.
    ///
    ///
    ///
    ///
    /// #### `leave-notify-event`
    ///  The ::leave-notify-event will be emitted when the pointer leaves
    /// the `widget`'s window.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::LEAVE_NOTIFY_MASK`][crate::gdk::EventMask::LEAVE_NOTIFY_MASK] mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `map`
    ///  The ::map signal is emitted when `widget` is going to be mapped, that is
    /// when the widget is visible (which is controlled with
    /// [`WidgetExt::set_visible()`][crate::prelude::WidgetExt::set_visible()]) and all its parents up to the toplevel widget
    /// are also visible. Once the map has occurred, [`map-event`][struct@crate::Widget#map-event] will
    /// be emitted.
    ///
    /// 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].
    ///
    ///
    ///
    ///
    /// #### `map-event`
    ///  The ::map-event signal will be emitted when the `widget`'s window is
    /// mapped. A window is mapped when it becomes visible on the screen.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::STRUCTURE_MASK`][crate::gdk::EventMask::STRUCTURE_MASK] mask. GDK will enable this mask
    /// automatically for all new windows.
    ///
    ///
    ///
    ///
    /// #### `mnemonic-activate`
    ///  The default handler for this signal activates `widget` if `group_cycling`
    /// is [`false`], or just makes `widget` grab focus if `group_cycling` is [`true`].
    ///
    ///
    ///
    ///
    /// #### `motion-notify-event`
    ///  The ::motion-notify-event signal is emitted when the pointer moves
    /// over the widget's [`gdk::Window`][crate::gdk::Window].
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget
    /// needs to enable the [`gdk::EventMask::POINTER_MOTION_MASK`][crate::gdk::EventMask::POINTER_MOTION_MASK] mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `move-focus`
    ///  Action
    ///
    ///
    /// #### `parent-set`
    ///  The ::parent-set signal is emitted when a new parent
    /// has been set on a widget.
    ///
    ///
    ///
    ///
    /// #### `popup-menu`
    ///  This signal gets emitted whenever a widget should pop up a context
    /// menu. This usually happens through the standard key binding mechanism;
    /// by pressing a certain key while a widget is focused, the user can cause
    /// the widget to pop up a menu. For example, the [`Entry`][crate::Entry] widget creates
    /// a menu with clipboard commands. See the
    /// [Popup Menu Migration Checklist][checklist-popup-menu]
    /// for an example of how to use this signal.
    ///
    /// Action
    ///
    ///
    /// #### `property-notify-event`
    ///  The ::property-notify-event signal will be emitted when a property on
    /// the `widget`'s window has been changed or deleted.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::PROPERTY_CHANGE_MASK`][crate::gdk::EventMask::PROPERTY_CHANGE_MASK] mask.
    ///
    ///
    ///
    ///
    /// #### `proximity-in-event`
    ///  To receive this signal the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::PROXIMITY_IN_MASK`][crate::gdk::EventMask::PROXIMITY_IN_MASK] mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `proximity-out-event`
    ///  To receive this signal the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::PROXIMITY_OUT_MASK`][crate::gdk::EventMask::PROXIMITY_OUT_MASK] mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `query-tooltip`
    ///  Emitted when [`has-tooltip`][struct@crate::Widget#has-tooltip] 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`
    ///  The ::realize signal is emitted when `widget` is associated with a
    /// [`gdk::Window`][crate::gdk::Window], which 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).
    ///
    ///
    ///
    ///
    /// #### `screen-changed`
    ///  The ::screen-changed signal gets emitted when the
    /// screen of a widget has changed.
    ///
    ///
    ///
    ///
    /// #### `scroll-event`
    ///  The ::scroll-event signal is emitted when a button in the 4 to 7
    /// range is pressed. Wheel mice are usually configured to generate
    /// button press events for buttons 4 and 5 when the wheel is turned.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::SCROLL_MASK`][crate::gdk::EventMask::SCROLL_MASK] mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `selection-clear-event`
    ///  The ::selection-clear-event signal will be emitted when the
    /// the `widget`'s window has lost ownership of a selection.
    ///
    ///
    ///
    ///
    /// #### `selection-get`
    ///
    ///
    ///
    /// #### `selection-notify-event`
    ///
    ///
    ///
    /// #### `selection-received`
    ///
    ///
    ///
    /// #### `selection-request-event`
    ///  The ::selection-request-event signal will be emitted when
    /// another client requests ownership of the selection owned by
    /// the `widget`'s window.
    ///
    ///
    ///
    ///
    /// #### `show`
    ///  The ::show signal is emitted when `widget` is shown, for example with
    /// [`WidgetExt::show()`][crate::prelude::WidgetExt::show()].
    ///
    ///
    ///
    ///
    /// #### `show-help`
    ///  Action
    ///
    ///
    /// #### `size-allocate`
    ///
    ///
    ///
    /// #### `state-changed`
    ///  The ::state-changed signal is emitted when the widget state changes.
    /// See `gtk_widget_get_state()`.
    ///
    ///
    ///
    ///
    /// #### `state-flags-changed`
    ///  The ::state-flags-changed signal is emitted when the widget state
    /// changes, see [`WidgetExt::state_flags()`][crate::prelude::WidgetExt::state_flags()].
    ///
    ///
    ///
    ///
    /// #### `style-set`
    ///  The ::style-set signal is emitted when a new style has been set
    /// on a widget. Note that style-modifying functions like
    /// `gtk_widget_modify_base()` also cause this signal to be emitted.
    ///
    /// Note that this signal is emitted for changes to the deprecated
    /// `GtkStyle`. To track changes to the [`StyleContext`][crate::StyleContext] associated
    /// with a widget, use the [`style-updated`][struct@crate::Widget#style-updated] signal.
    ///
    ///
    ///
    ///
    /// #### `style-updated`
    ///  The ::style-updated signal is a convenience signal that is emitted when the
    /// [`changed`][struct@crate::StyleContext#changed] signal is emitted on the `widget`'s associated
    /// [`StyleContext`][crate::StyleContext] as returned by [`WidgetExt::style_context()`][crate::prelude::WidgetExt::style_context()].
    ///
    /// Note that style-modifying functions like `gtk_widget_override_color()` also
    /// cause this signal to be emitted.
    ///
    ///
    ///
    ///
    /// #### `touch-event`
    ///
    ///
    ///
    /// #### `unmap`
    ///  The ::unmap signal is emitted when `widget` is going to be unmapped, which
    /// means that 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.
    ///
    ///
    ///
    ///
    /// #### `unmap-event`
    ///  The ::unmap-event signal will be emitted when the `widget`'s window is
    /// unmapped. A window is unmapped when it becomes invisible on the screen.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::STRUCTURE_MASK`][crate::gdk::EventMask::STRUCTURE_MASK] mask. GDK will enable this mask
    /// automatically for all new windows.
    ///
    ///
    ///
    ///
    /// #### `unrealize`
    ///  The ::unrealize signal is emitted when the [`gdk::Window`][crate::gdk::Window] associated with
    /// `widget` is destroyed, which 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).
    ///
    ///
    ///
    ///
    /// #### `visibility-notify-event`
    ///  The ::visibility-notify-event will be emitted when the `widget`'s
    /// window is obscured or unobscured.
    ///
    /// To receive this signal the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::VISIBILITY_NOTIFY_MASK`][crate::gdk::EventMask::VISIBILITY_NOTIFY_MASK] mask.
    ///
    ///
    ///
    ///
    /// #### `window-state-event`
    ///  The ::window-state-event will be emitted when the state of the
    /// toplevel window associated to the `widget` changes.
    ///
    /// To receive this signal the [`gdk::Window`][crate::gdk::Window] associated to the widget
    /// needs to enable the [`gdk::EventMask::STRUCTURE_MASK`][crate::gdk::EventMask::STRUCTURE_MASK] mask. GDK will enable
    /// this mask automatically for all new windows.
    ///
    ///
    /// </details>
    ///
    /// # Implements
    ///
    /// [`IconViewExt`][trait@crate::prelude::IconViewExt], [`ContainerExt`][trait@crate::prelude::ContainerExt], [`WidgetExt`][trait@crate::prelude::WidgetExt], [`trait@glib::ObjectExt`], [`BuildableExt`][trait@crate::prelude::BuildableExt], [`CellLayoutExt`][trait@crate::prelude::CellLayoutExt], [`ScrollableExt`][trait@crate::prelude::ScrollableExt], [`ContainerExtManual`][trait@crate::prelude::ContainerExtManual], [`WidgetExtManual`][trait@crate::prelude::WidgetExtManual], [`BuildableExtManual`][trait@crate::prelude::BuildableExtManual]
    #[doc(alias = "GtkIconView")]
    pub struct IconView(Object<ffi::GtkIconView, ffi::GtkIconViewClass>) @extends Container, Widget, @implements Buildable, CellLayout, Scrollable;

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

impl IconView {
    pub const NONE: Option<&'static IconView> = None;

    /// Creates a new [`IconView`][crate::IconView] widget
    ///
    /// # Returns
    ///
    /// A newly created [`IconView`][crate::IconView] widget
    #[doc(alias = "gtk_icon_view_new")]
    pub fn new() -> IconView {
        assert_initialized_main_thread!();
        unsafe { Widget::from_glib_none(ffi::gtk_icon_view_new()).unsafe_cast() }
    }

    /// Creates a new [`IconView`][crate::IconView] widget using the
    /// specified `area` to layout cells inside the icons.
    /// ## `area`
    /// the [`CellArea`][crate::CellArea] to use to layout cells
    ///
    /// # Returns
    ///
    /// A newly created [`IconView`][crate::IconView] widget
    #[doc(alias = "gtk_icon_view_new_with_area")]
    #[doc(alias = "new_with_area")]
    pub fn with_area(area: &impl IsA<CellArea>) -> IconView {
        skip_assert_initialized!();
        unsafe {
            Widget::from_glib_none(ffi::gtk_icon_view_new_with_area(
                area.as_ref().to_glib_none().0,
            ))
            .unsafe_cast()
        }
    }

    /// Creates a new [`IconView`][crate::IconView] widget with the model `model`.
    /// ## `model`
    /// The model.
    ///
    /// # Returns
    ///
    /// A newly created [`IconView`][crate::IconView] widget.
    #[doc(alias = "gtk_icon_view_new_with_model")]
    #[doc(alias = "new_with_model")]
    pub fn with_model(model: &impl IsA<TreeModel>) -> IconView {
        skip_assert_initialized!();
        unsafe {
            Widget::from_glib_none(ffi::gtk_icon_view_new_with_model(
                model.as_ref().to_glib_none().0,
            ))
            .unsafe_cast()
        }
    }

    // rustdoc-stripper-ignore-next
    /// Creates a new builder-pattern struct instance to construct [`IconView`] objects.
    ///
    /// This method returns an instance of [`IconViewBuilder`](crate::builders::IconViewBuilder) which can be used to create [`IconView`] objects.
    pub fn builder() -> IconViewBuilder {
        IconViewBuilder::new()
    }
}

impl Default for IconView {
    fn default() -> Self {
        Self::new()
    }
}

// rustdoc-stripper-ignore-next
/// A [builder-pattern] type to construct [`IconView`] 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 IconViewBuilder {
    builder: glib::object::ObjectBuilder<'static, IconView>,
}

impl IconViewBuilder {
    fn new() -> Self {
        Self {
            builder: glib::object::Object::builder(),
        }
    }

    /// The activate-on-single-click property specifies whether the "item-activated" signal
    /// will be emitted after a single click.
    pub fn activate_on_single_click(self, activate_on_single_click: bool) -> Self {
        Self {
            builder: self
                .builder
                .property("activate-on-single-click", activate_on_single_click),
        }
    }

    /// The [`CellArea`][crate::CellArea] used to layout cell renderers for this view.
    ///
    /// If no area is specified when creating the icon view with [`IconView::with_area()`][crate::IconView::with_area()]
    /// a [`CellAreaBox`][crate::CellAreaBox] will be used.
    pub fn cell_area(self, cell_area: &impl IsA<CellArea>) -> Self {
        Self {
            builder: self
                .builder
                .property("cell-area", cell_area.clone().upcast()),
        }
    }

    /// The column-spacing property specifies the space which is inserted between
    /// the columns of the icon view.
    pub fn column_spacing(self, column_spacing: i32) -> Self {
        Self {
            builder: self.builder.property("column-spacing", column_spacing),
        }
    }

    /// The columns property contains the number of the columns in which the
    /// items should be displayed. If it is -1, the number of columns will
    /// be chosen automatically to fill the available area.
    pub fn columns(self, columns: i32) -> Self {
        Self {
            builder: self.builder.property("columns", columns),
        }
    }

    /// The item-orientation property specifies how the cells (i.e. the icon and
    /// the text) of the item are positioned relative to each other.
    pub fn item_orientation(self, item_orientation: Orientation) -> Self {
        Self {
            builder: self.builder.property("item-orientation", item_orientation),
        }
    }

    /// The item-padding property specifies the padding around each
    /// of the icon view's item.
    pub fn item_padding(self, item_padding: i32) -> Self {
        Self {
            builder: self.builder.property("item-padding", item_padding),
        }
    }

    /// The item-width property specifies the width to use for each item.
    /// If it is set to -1, the icon view will automatically determine a
    /// suitable item size.
    pub fn item_width(self, item_width: i32) -> Self {
        Self {
            builder: self.builder.property("item-width", item_width),
        }
    }

    /// The margin property specifies the space which is inserted
    /// at the edges of the icon view.
    pub fn margin(self, margin: i32) -> Self {
        Self {
            builder: self.builder.property("margin", margin),
        }
    }

    /// The ::markup-column property contains the number of the model column
    /// containing markup information to be displayed. The markup column must be
    /// of type `G_TYPE_STRING`. If this property and the :text-column property
    /// are both set to column numbers, it overrides the text column.
    /// If both are set to -1, no texts are displayed.
    pub fn markup_column(self, markup_column: i32) -> Self {
        Self {
            builder: self.builder.property("markup-column", markup_column),
        }
    }

    pub fn model(self, model: &impl IsA<TreeModel>) -> Self {
        Self {
            builder: self.builder.property("model", model.clone().upcast()),
        }
    }

    /// The ::pixbuf-column property contains the number of the model column
    /// containing the pixbufs which are displayed. The pixbuf column must be
    /// of type `GDK_TYPE_PIXBUF`. Setting this property to -1 turns off the
    /// display of pixbufs.
    pub fn pixbuf_column(self, pixbuf_column: i32) -> Self {
        Self {
            builder: self.builder.property("pixbuf-column", pixbuf_column),
        }
    }

    /// The reorderable property specifies if the items can be reordered
    /// by DND.
    pub fn reorderable(self, reorderable: bool) -> Self {
        Self {
            builder: self.builder.property("reorderable", reorderable),
        }
    }

    /// The row-spacing property specifies the space which is inserted between
    /// the rows of the icon view.
    pub fn row_spacing(self, row_spacing: i32) -> Self {
        Self {
            builder: self.builder.property("row-spacing", row_spacing),
        }
    }

    /// The ::selection-mode property specifies the selection mode of
    /// icon view. If the mode is [`SelectionMode::Multiple`][crate::SelectionMode::Multiple], rubberband selection
    /// is enabled, for the other modes, only keyboard selection is possible.
    pub fn selection_mode(self, selection_mode: SelectionMode) -> Self {
        Self {
            builder: self.builder.property("selection-mode", selection_mode),
        }
    }

    /// The spacing property specifies the space which is inserted between
    /// the cells (i.e. the icon and the text) of an item.
    pub fn spacing(self, spacing: i32) -> Self {
        Self {
            builder: self.builder.property("spacing", spacing),
        }
    }

    /// The ::text-column property contains the number of the model column
    /// containing the texts which are displayed. The text column must be
    /// of type `G_TYPE_STRING`. If this property and the :markup-column
    /// property are both set to -1, no texts are displayed.
    pub fn text_column(self, text_column: i32) -> Self {
        Self {
            builder: self.builder.property("text-column", text_column),
        }
    }

    pub fn tooltip_column(self, tooltip_column: i32) -> Self {
        Self {
            builder: self.builder.property("tooltip-column", tooltip_column),
        }
    }

    pub fn border_width(self, border_width: u32) -> Self {
        Self {
            builder: self.builder.property("border-width", border_width),
        }
    }

    pub fn child(self, child: &impl IsA<Widget>) -> Self {
        Self {
            builder: self.builder.property("child", child.clone().upcast()),
        }
    }

    pub fn resize_mode(self, resize_mode: ResizeMode) -> Self {
        Self {
            builder: self.builder.property("resize-mode", resize_mode),
        }
    }

    pub fn app_paintable(self, app_paintable: bool) -> Self {
        Self {
            builder: self.builder.property("app-paintable", app_paintable),
        }
    }

    pub fn can_default(self, can_default: bool) -> Self {
        Self {
            builder: self.builder.property("can-default", can_default),
        }
    }

    pub fn can_focus(self, can_focus: bool) -> Self {
        Self {
            builder: self.builder.property("can-focus", can_focus),
        }
    }

    pub fn events(self, events: gdk::EventMask) -> Self {
        Self {
            builder: self.builder.property("events", events),
        }
    }

    /// Whether to expand in both directions. Setting this sets both [`hexpand`][struct@crate::Widget#hexpand] and [`vexpand`][struct@crate::Widget#vexpand]
    pub fn expand(self, expand: bool) -> Self {
        Self {
            builder: self.builder.property("expand", expand),
        }
    }

    /// 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.
    pub fn focus_on_click(self, focus_on_click: bool) -> Self {
        Self {
            builder: self.builder.property("focus-on-click", focus_on_click),
        }
    }

    /// How to distribute horizontal space if widget gets extra space, see [`Align`][crate::Align]
    pub fn halign(self, halign: Align) -> Self {
        Self {
            builder: self.builder.property("halign", halign),
        }
    }

    pub fn has_default(self, has_default: bool) -> Self {
        Self {
            builder: self.builder.property("has-default", has_default),
        }
    }

    pub fn has_focus(self, has_focus: bool) -> Self {
        Self {
            builder: self.builder.property("has-focus", has_focus),
        }
    }

    /// Enables or disables the emission of [`query-tooltip`][struct@crate::Widget#query-tooltip] 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.
    ///
    /// 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.
    pub fn has_tooltip(self, has_tooltip: bool) -> Self {
        Self {
            builder: self.builder.property("has-tooltip", has_tooltip),
        }
    }

    pub fn height_request(self, height_request: i32) -> Self {
        Self {
            builder: self.builder.property("height-request", height_request),
        }
    }

    /// Whether to expand horizontally. See [`WidgetExt::set_hexpand()`][crate::prelude::WidgetExt::set_hexpand()].
    pub fn hexpand(self, hexpand: bool) -> Self {
        Self {
            builder: self.builder.property("hexpand", hexpand),
        }
    }

    /// Whether to use the [`hexpand`][struct@crate::Widget#hexpand] property. See [`WidgetExt::is_hexpand_set()`][crate::prelude::WidgetExt::is_hexpand_set()].
    pub fn hexpand_set(self, hexpand_set: bool) -> Self {
        Self {
            builder: self.builder.property("hexpand-set", hexpand_set),
        }
    }

    pub fn is_focus(self, is_focus: bool) -> Self {
        Self {
            builder: self.builder.property("is-focus", is_focus),
        }
    }

    /// 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),
        }
    }

    pub fn name(self, name: impl Into<glib::GString>) -> Self {
        Self {
            builder: self.builder.property("name", name.into()),
        }
    }

    pub fn no_show_all(self, no_show_all: bool) -> Self {
        Self {
            builder: self.builder.property("no-show-all", no_show_all),
        }
    }

    /// The requested opacity of the widget. See [`WidgetExt::set_opacity()`][crate::prelude::WidgetExt::set_opacity()] for
    /// more details about window opacity.
    ///
    /// Before 3.8 this was only available in GtkWindow
    pub fn opacity(self, opacity: f64) -> Self {
        Self {
            builder: self.builder.property("opacity", opacity),
        }
    }

    pub fn parent(self, parent: &impl IsA<Container>) -> Self {
        Self {
            builder: self.builder.property("parent", parent.clone().upcast()),
        }
    }

    pub fn receives_default(self, receives_default: bool) -> Self {
        Self {
            builder: self.builder.property("receives-default", receives_default),
        }
    }

    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 the [Pango text markup language][PangoMarkupFormat].
    /// 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, see [`Align`][crate::Align]
    pub fn valign(self, valign: Align) -> Self {
        Self {
            builder: self.builder.property("valign", valign),
        }
    }

    /// Whether to expand vertically. See [`WidgetExt::set_vexpand()`][crate::prelude::WidgetExt::set_vexpand()].
    pub fn vexpand(self, vexpand: bool) -> Self {
        Self {
            builder: self.builder.property("vexpand", vexpand),
        }
    }

    /// Whether to use the [`vexpand`][struct@crate::Widget#vexpand] property. See [`WidgetExt::is_vexpand_set()`][crate::prelude::WidgetExt::is_vexpand_set()].
    pub fn vexpand_set(self, vexpand_set: bool) -> Self {
        Self {
            builder: self.builder.property("vexpand-set", vexpand_set),
        }
    }

    pub fn visible(self, visible: bool) -> Self {
        Self {
            builder: self.builder.property("visible", visible),
        }
    }

    pub fn width_request(self, width_request: i32) -> Self {
        Self {
            builder: self.builder.property("width-request", width_request),
        }
    }

    /// Horizontal [`Adjustment`][crate::Adjustment] of the scrollable widget. This adjustment is
    /// shared between the scrollable widget and its parent.
    pub fn hadjustment(self, hadjustment: &impl IsA<Adjustment>) -> Self {
        Self {
            builder: self
                .builder
                .property("hadjustment", hadjustment.clone().upcast()),
        }
    }

    /// Determines whether horizontal scrolling should start once the scrollable
    /// widget is allocated less than its minimum width or less than its natural width.
    pub fn hscroll_policy(self, hscroll_policy: ScrollablePolicy) -> Self {
        Self {
            builder: self.builder.property("hscroll-policy", hscroll_policy),
        }
    }

    /// Verical [`Adjustment`][crate::Adjustment] of the scrollable widget. This adjustment is shared
    /// between the scrollable widget and its parent.
    pub fn vadjustment(self, vadjustment: &impl IsA<Adjustment>) -> Self {
        Self {
            builder: self
                .builder
                .property("vadjustment", vadjustment.clone().upcast()),
        }
    }

    /// Determines whether vertical scrolling should start once the scrollable
    /// widget is allocated less than its minimum height or less than its natural height.
    pub fn vscroll_policy(self, vscroll_policy: ScrollablePolicy) -> Self {
        Self {
            builder: self.builder.property("vscroll-policy", vscroll_policy),
        }
    }

    // rustdoc-stripper-ignore-next
    /// Build the [`IconView`].
    #[must_use = "Building the object from the builder is usually expensive and is not expected to have side effects"]
    pub fn build(self) -> IconView {
        assert_initialized_main_thread!();
        self.builder.build()
    }
}

/// Trait containing all [`struct@IconView`] methods.
///
/// # Implementors
///
/// [`IconView`][struct@crate::IconView]
pub trait IconViewExt: IsA<IconView> + 'static {
    /// Converts widget coordinates to coordinates for the bin_window,
    /// as expected by e.g. [`path_at_pos()`][Self::path_at_pos()].
    /// ## `wx`
    /// X coordinate relative to the widget
    /// ## `wy`
    /// Y coordinate relative to the widget
    ///
    /// # Returns
    ///
    ///
    /// ## `bx`
    /// return location for bin_window X coordinate
    ///
    /// ## `by`
    /// return location for bin_window Y coordinate
    #[doc(alias = "gtk_icon_view_convert_widget_to_bin_window_coords")]
    fn convert_widget_to_bin_window_coords(&self, wx: i32, wy: i32) -> (i32, i32) {
        unsafe {
            let mut bx = std::mem::MaybeUninit::uninit();
            let mut by = std::mem::MaybeUninit::uninit();
            ffi::gtk_icon_view_convert_widget_to_bin_window_coords(
                self.as_ref().to_glib_none().0,
                wx,
                wy,
                bx.as_mut_ptr(),
                by.as_mut_ptr(),
            );
            (bx.assume_init(), by.assume_init())
        }
    }

    /// Creates a [`cairo::Surface`][crate::cairo::Surface] representation of the item at `path`.
    /// This image is used for a drag icon.
    /// ## `path`
    /// a [`TreePath`][crate::TreePath] in `self`
    ///
    /// # Returns
    ///
    /// a newly-allocated surface of the drag icon.
    #[doc(alias = "gtk_icon_view_create_drag_icon")]
    fn create_drag_icon(&self, path: &TreePath) -> Option<cairo::Surface> {
        unsafe {
            from_glib_full(ffi::gtk_icon_view_create_drag_icon(
                self.as_ref().to_glib_none().0,
                mut_override(path.to_glib_none().0),
            ))
        }
    }

    /// Gets the setting set by [`set_activate_on_single_click()`][Self::set_activate_on_single_click()].
    ///
    /// # Returns
    ///
    /// [`true`] if item-activated will be emitted on a single click
    #[doc(alias = "gtk_icon_view_get_activate_on_single_click")]
    #[doc(alias = "get_activate_on_single_click")]
    #[doc(alias = "activate-on-single-click")]
    fn activates_on_single_click(&self) -> bool {
        unsafe {
            from_glib(ffi::gtk_icon_view_get_activate_on_single_click(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Fills the bounding rectangle in widget coordinates for the cell specified by
    /// `path` and `cell`. If `cell` is [`None`] the main cell area is used.
    ///
    /// This function is only valid if `self` is realized.
    /// ## `path`
    /// a [`TreePath`][crate::TreePath]
    /// ## `cell`
    /// a [`CellRenderer`][crate::CellRenderer] or [`None`]
    ///
    /// # Returns
    ///
    /// [`false`] if there is no such item, [`true`] otherwise
    ///
    /// ## `rect`
    /// rectangle to fill with cell rect
    #[doc(alias = "gtk_icon_view_get_cell_rect")]
    #[doc(alias = "get_cell_rect")]
    fn cell_rect(
        &self,
        path: &TreePath,
        cell: Option<&impl IsA<CellRenderer>>,
    ) -> Option<gdk::Rectangle> {
        unsafe {
            let mut rect = gdk::Rectangle::uninitialized();
            let ret = from_glib(ffi::gtk_icon_view_get_cell_rect(
                self.as_ref().to_glib_none().0,
                mut_override(path.to_glib_none().0),
                cell.map(|p| p.as_ref()).to_glib_none().0,
                rect.to_glib_none_mut().0,
            ));
            if ret { Some(rect) } else { None }
        }
    }

    /// Returns the value of the ::column-spacing property.
    ///
    /// # Returns
    ///
    /// the space between columns
    #[doc(alias = "gtk_icon_view_get_column_spacing")]
    #[doc(alias = "get_column_spacing")]
    #[doc(alias = "column-spacing")]
    fn column_spacing(&self) -> i32 {
        unsafe { ffi::gtk_icon_view_get_column_spacing(self.as_ref().to_glib_none().0) }
    }

    /// Returns the value of the ::columns property.
    ///
    /// # Returns
    ///
    /// the number of columns, or -1
    #[doc(alias = "gtk_icon_view_get_columns")]
    #[doc(alias = "get_columns")]
    fn columns(&self) -> i32 {
        unsafe { ffi::gtk_icon_view_get_columns(self.as_ref().to_glib_none().0) }
    }

    /// Fills in `path` and `cell` with the current cursor path and cell.
    /// If the cursor isn’t currently set, then *`path` will be [`None`].
    /// If no cell currently has focus, then *`cell` will be [`None`].
    ///
    /// The returned [`TreePath`][crate::TreePath] must be freed with `gtk_tree_path_free()`.
    ///
    /// # Returns
    ///
    /// [`true`] if the cursor is set.
    ///
    /// ## `path`
    /// Return location for the current
    ///  cursor path, or [`None`]
    ///
    /// ## `cell`
    /// Return location the current
    ///  focus cell, or [`None`]
    #[doc(alias = "gtk_icon_view_get_cursor")]
    #[doc(alias = "get_cursor")]
    fn cursor(&self) -> Option<(TreePath, CellRenderer)> {
        unsafe {
            let mut path = std::ptr::null_mut();
            let mut cell = std::ptr::null_mut();
            let ret = from_glib(ffi::gtk_icon_view_get_cursor(
                self.as_ref().to_glib_none().0,
                &mut path,
                &mut cell,
            ));
            if ret {
                Some((from_glib_full(path), from_glib_none(cell)))
            } else {
                None
            }
        }
    }

    /// Determines the destination item for a given position.
    /// ## `drag_x`
    /// the position to determine the destination item for
    /// ## `drag_y`
    /// the position to determine the destination item for
    ///
    /// # Returns
    ///
    /// whether there is an item at the given position.
    ///
    /// ## `path`
    /// Return location for the path of the item,
    ///  or [`None`].
    ///
    /// ## `pos`
    /// Return location for the drop position, or [`None`]
    #[doc(alias = "gtk_icon_view_get_dest_item_at_pos")]
    #[doc(alias = "get_dest_item_at_pos")]
    fn dest_item_at_pos(
        &self,
        drag_x: i32,
        drag_y: i32,
    ) -> Option<(TreePath, IconViewDropPosition)> {
        unsafe {
            let mut path = std::ptr::null_mut();
            let mut pos = std::mem::MaybeUninit::uninit();
            let ret = from_glib(ffi::gtk_icon_view_get_dest_item_at_pos(
                self.as_ref().to_glib_none().0,
                drag_x,
                drag_y,
                &mut path,
                pos.as_mut_ptr(),
            ));
            if ret {
                Some((from_glib_full(path), from_glib(pos.assume_init())))
            } else {
                None
            }
        }
    }

    /// Gets information about the item that is highlighted for feedback.
    ///
    /// # Returns
    ///
    ///
    /// ## `path`
    /// Return location for the path of
    ///  the highlighted item, or [`None`].
    ///
    /// ## `pos`
    /// Return location for the drop position, or [`None`]
    #[doc(alias = "gtk_icon_view_get_drag_dest_item")]
    #[doc(alias = "get_drag_dest_item")]
    fn drag_dest_item(&self) -> (TreePath, IconViewDropPosition) {
        unsafe {
            let mut path = std::ptr::null_mut();
            let mut pos = std::mem::MaybeUninit::uninit();
            ffi::gtk_icon_view_get_drag_dest_item(
                self.as_ref().to_glib_none().0,
                &mut path,
                pos.as_mut_ptr(),
            );
            (from_glib_full(path), from_glib(pos.assume_init()))
        }
    }

    /// Finds the path at the point (`x`, `y`), relative to bin_window coordinates.
    /// In contrast to [`path_at_pos()`][Self::path_at_pos()], this function also
    /// obtains the cell at the specified position. The returned path should
    /// be freed with `gtk_tree_path_free()`.
    /// See [`convert_widget_to_bin_window_coords()`][Self::convert_widget_to_bin_window_coords()] for converting
    /// widget coordinates to bin_window coordinates.
    /// ## `x`
    /// The x position to be identified
    /// ## `y`
    /// The y position to be identified
    ///
    /// # Returns
    ///
    /// [`true`] if an item exists at the specified position
    ///
    /// ## `path`
    /// Return location for the path, or [`None`]
    ///
    /// ## `cell`
    /// Return location for the renderer
    ///  responsible for the cell at (`x`, `y`), or [`None`]
    #[doc(alias = "gtk_icon_view_get_item_at_pos")]
    #[doc(alias = "get_item_at_pos")]
    fn item_at_pos(&self, x: i32, y: i32) -> Option<(TreePath, CellRenderer)> {
        unsafe {
            let mut path = std::ptr::null_mut();
            let mut cell = std::ptr::null_mut();
            let ret = from_glib(ffi::gtk_icon_view_get_item_at_pos(
                self.as_ref().to_glib_none().0,
                x,
                y,
                &mut path,
                &mut cell,
            ));
            if ret {
                Some((from_glib_full(path), from_glib_none(cell)))
            } else {
                None
            }
        }
    }

    /// Gets the column in which the item `path` is currently
    /// displayed. Column numbers start at 0.
    /// ## `path`
    /// the [`TreePath`][crate::TreePath] of the item
    ///
    /// # Returns
    ///
    /// The column in which the item is displayed
    #[doc(alias = "gtk_icon_view_get_item_column")]
    #[doc(alias = "get_item_column")]
    fn item_column(&self, path: &TreePath) -> i32 {
        unsafe {
            ffi::gtk_icon_view_get_item_column(
                self.as_ref().to_glib_none().0,
                mut_override(path.to_glib_none().0),
            )
        }
    }

    /// Returns the value of the ::item-orientation property which determines
    /// whether the labels are drawn beside the icons instead of below.
    ///
    /// # Returns
    ///
    /// the relative position of texts and icons
    #[doc(alias = "gtk_icon_view_get_item_orientation")]
    #[doc(alias = "get_item_orientation")]
    #[doc(alias = "item-orientation")]
    fn item_orientation(&self) -> Orientation {
        unsafe {
            from_glib(ffi::gtk_icon_view_get_item_orientation(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Returns the value of the ::item-padding property.
    ///
    /// # Returns
    ///
    /// the padding around items
    #[doc(alias = "gtk_icon_view_get_item_padding")]
    #[doc(alias = "get_item_padding")]
    #[doc(alias = "item-padding")]
    fn item_padding(&self) -> i32 {
        unsafe { ffi::gtk_icon_view_get_item_padding(self.as_ref().to_glib_none().0) }
    }

    /// Gets the row in which the item `path` is currently
    /// displayed. Row numbers start at 0.
    /// ## `path`
    /// the [`TreePath`][crate::TreePath] of the item
    ///
    /// # Returns
    ///
    /// The row in which the item is displayed
    #[doc(alias = "gtk_icon_view_get_item_row")]
    #[doc(alias = "get_item_row")]
    fn item_row(&self, path: &TreePath) -> i32 {
        unsafe {
            ffi::gtk_icon_view_get_item_row(
                self.as_ref().to_glib_none().0,
                mut_override(path.to_glib_none().0),
            )
        }
    }

    /// Returns the value of the ::item-width property.
    ///
    /// # Returns
    ///
    /// the width of a single item, or -1
    #[doc(alias = "gtk_icon_view_get_item_width")]
    #[doc(alias = "get_item_width")]
    #[doc(alias = "item-width")]
    fn item_width(&self) -> i32 {
        unsafe { ffi::gtk_icon_view_get_item_width(self.as_ref().to_glib_none().0) }
    }

    /// Returns the value of the ::margin property.
    ///
    /// # Returns
    ///
    /// the space at the borders
    #[doc(alias = "gtk_icon_view_get_margin")]
    #[doc(alias = "get_margin")]
    fn margin(&self) -> i32 {
        unsafe { ffi::gtk_icon_view_get_margin(self.as_ref().to_glib_none().0) }
    }

    /// Returns the column with markup text for `self`.
    ///
    /// # Returns
    ///
    /// the markup column, or -1 if it’s unset.
    #[doc(alias = "gtk_icon_view_get_markup_column")]
    #[doc(alias = "get_markup_column")]
    #[doc(alias = "markup-column")]
    fn markup_column(&self) -> i32 {
        unsafe { ffi::gtk_icon_view_get_markup_column(self.as_ref().to_glib_none().0) }
    }

    /// Returns the model the [`IconView`][crate::IconView] is based on. Returns [`None`] if the
    /// model is unset.
    ///
    /// # Returns
    ///
    /// A [`TreeModel`][crate::TreeModel], or [`None`] if none is
    ///  currently being used.
    #[doc(alias = "gtk_icon_view_get_model")]
    #[doc(alias = "get_model")]
    fn model(&self) -> Option<TreeModel> {
        unsafe { from_glib_none(ffi::gtk_icon_view_get_model(self.as_ref().to_glib_none().0)) }
    }

    /// Finds the path at the point (`x`, `y`), relative to bin_window coordinates.
    /// See [`item_at_pos()`][Self::item_at_pos()], if you are also interested in
    /// the cell at the specified position.
    /// See [`convert_widget_to_bin_window_coords()`][Self::convert_widget_to_bin_window_coords()] for converting
    /// widget coordinates to bin_window coordinates.
    /// ## `x`
    /// The x position to be identified
    /// ## `y`
    /// The y position to be identified
    ///
    /// # Returns
    ///
    /// The [`TreePath`][crate::TreePath] corresponding
    /// to the icon or [`None`] if no icon exists at that position.
    #[doc(alias = "gtk_icon_view_get_path_at_pos")]
    #[doc(alias = "get_path_at_pos")]
    fn path_at_pos(&self, x: i32, y: i32) -> Option<TreePath> {
        unsafe {
            from_glib_full(ffi::gtk_icon_view_get_path_at_pos(
                self.as_ref().to_glib_none().0,
                x,
                y,
            ))
        }
    }

    /// Returns the column with pixbufs for `self`.
    ///
    /// # Returns
    ///
    /// the pixbuf column, or -1 if it’s unset.
    #[doc(alias = "gtk_icon_view_get_pixbuf_column")]
    #[doc(alias = "get_pixbuf_column")]
    #[doc(alias = "pixbuf-column")]
    fn pixbuf_column(&self) -> i32 {
        unsafe { ffi::gtk_icon_view_get_pixbuf_column(self.as_ref().to_glib_none().0) }
    }

    /// Retrieves whether the user can reorder the list via drag-and-drop.
    /// See [`set_reorderable()`][Self::set_reorderable()].
    ///
    /// # Returns
    ///
    /// [`true`] if the list can be reordered.
    #[doc(alias = "gtk_icon_view_get_reorderable")]
    #[doc(alias = "get_reorderable")]
    #[doc(alias = "reorderable")]
    fn is_reorderable(&self) -> bool {
        unsafe {
            from_glib(ffi::gtk_icon_view_get_reorderable(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Returns the value of the ::row-spacing property.
    ///
    /// # Returns
    ///
    /// the space between rows
    #[doc(alias = "gtk_icon_view_get_row_spacing")]
    #[doc(alias = "get_row_spacing")]
    #[doc(alias = "row-spacing")]
    fn row_spacing(&self) -> i32 {
        unsafe { ffi::gtk_icon_view_get_row_spacing(self.as_ref().to_glib_none().0) }
    }

    /// Creates a list of paths of all selected items. Additionally, if you are
    /// planning on modifying the model after calling this function, you may
    /// want to convert the returned list into a list of `GtkTreeRowReferences`.
    /// To do this, you can use [`TreeRowReference::new()`][crate::TreeRowReference::new()].
    ///
    /// To free the return value, use:
    ///
    ///
    /// **⚠️ The following code is in C ⚠️**
    ///
    /// ```C
    /// g_list_free_full (list, (GDestroyNotify) gtk_tree_path_free);
    /// ```
    ///
    /// # Returns
    ///
    /// A `GList` containing a [`TreePath`][crate::TreePath] for each selected row.
    #[doc(alias = "gtk_icon_view_get_selected_items")]
    #[doc(alias = "get_selected_items")]
    fn selected_items(&self) -> Vec<TreePath> {
        unsafe {
            FromGlibPtrContainer::from_glib_full(ffi::gtk_icon_view_get_selected_items(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Gets the selection mode of the `self`.
    ///
    /// # Returns
    ///
    /// the current selection mode
    #[doc(alias = "gtk_icon_view_get_selection_mode")]
    #[doc(alias = "get_selection_mode")]
    #[doc(alias = "selection-mode")]
    fn selection_mode(&self) -> SelectionMode {
        unsafe {
            from_glib(ffi::gtk_icon_view_get_selection_mode(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Returns the value of the ::spacing property.
    ///
    /// # Returns
    ///
    /// the space between cells
    #[doc(alias = "gtk_icon_view_get_spacing")]
    #[doc(alias = "get_spacing")]
    fn spacing(&self) -> i32 {
        unsafe { ffi::gtk_icon_view_get_spacing(self.as_ref().to_glib_none().0) }
    }

    /// Returns the column with text for `self`.
    ///
    /// # Returns
    ///
    /// the text column, or -1 if it’s unset.
    #[doc(alias = "gtk_icon_view_get_text_column")]
    #[doc(alias = "get_text_column")]
    #[doc(alias = "text-column")]
    fn text_column(&self) -> i32 {
        unsafe { ffi::gtk_icon_view_get_text_column(self.as_ref().to_glib_none().0) }
    }

    /// Returns the column of `self`’s model which is being used for
    /// displaying tooltips on `self`’s rows.
    ///
    /// # Returns
    ///
    /// the index of the tooltip column that is currently being
    /// used, or -1 if this is disabled.
    #[doc(alias = "gtk_icon_view_get_tooltip_column")]
    #[doc(alias = "get_tooltip_column")]
    #[doc(alias = "tooltip-column")]
    fn tooltip_column(&self) -> i32 {
        unsafe { ffi::gtk_icon_view_get_tooltip_column(self.as_ref().to_glib_none().0) }
    }

    /// This function is supposed to be used in a [`query-tooltip`][struct@crate::Widget#query-tooltip]
    /// signal handler for [`IconView`][crate::IconView]. The `x`, `y` and `keyboard_tip` values
    /// which are received in the signal handler, should be passed to this
    /// function without modification.
    ///
    /// The return value indicates whether there is an icon view item at the given
    /// coordinates ([`true`]) or not ([`false`]) for mouse tooltips. For keyboard
    /// tooltips the item returned will be the cursor item. When [`true`], then any of
    /// `model`, `path` and `iter` which have been provided will be set to point to
    /// that row and the corresponding model. `x` and `y` will always be converted
    /// to be relative to `self`’s bin_window if `keyboard_tooltip` is [`false`].
    /// ## `keyboard_tip`
    /// whether this is a keyboard tooltip or not
    ///
    /// # Returns
    ///
    /// whether or not the given tooltip context points to a item
    ///
    /// ## `x`
    /// the x coordinate (relative to widget coordinates)
    ///
    /// ## `y`
    /// the y coordinate (relative to widget coordinates)
    ///
    /// ## `model`
    /// a pointer to receive a
    ///  [`TreeModel`][crate::TreeModel] or [`None`]
    ///
    /// ## `path`
    /// a pointer to receive a [`TreePath`][crate::TreePath] or [`None`]
    ///
    /// ## `iter`
    /// a pointer to receive a [`TreeIter`][crate::TreeIter] or [`None`]
    #[doc(alias = "gtk_icon_view_get_tooltip_context")]
    #[doc(alias = "get_tooltip_context")]
    fn tooltip_context(
        &self,
        x: &mut i32,
        y: &mut i32,
        keyboard_tip: bool,
    ) -> Option<(TreeModel, TreePath, TreeIter)> {
        unsafe {
            let mut model = std::ptr::null_mut();
            let mut path = std::ptr::null_mut();
            let mut iter = TreeIter::uninitialized();
            let ret = from_glib(ffi::gtk_icon_view_get_tooltip_context(
                self.as_ref().to_glib_none().0,
                x,
                y,
                keyboard_tip.into_glib(),
                &mut model,
                &mut path,
                iter.to_glib_none_mut().0,
            ));
            if ret {
                Some((from_glib_none(model), from_glib_full(path), iter))
            } else {
                None
            }
        }
    }

    /// Sets `start_path` and `end_path` to be the first and last visible path.
    /// Note that there may be invisible paths in between.
    ///
    /// Both paths should be freed with `gtk_tree_path_free()` after use.
    ///
    /// # Returns
    ///
    /// [`true`], if valid paths were placed in `start_path` and `end_path`
    ///
    /// ## `start_path`
    /// Return location for start of region,
    ///  or [`None`]
    ///
    /// ## `end_path`
    /// Return location for end of region, or [`None`]
    #[doc(alias = "gtk_icon_view_get_visible_range")]
    #[doc(alias = "get_visible_range")]
    fn visible_range(&self) -> Option<(TreePath, TreePath)> {
        unsafe {
            let mut start_path = std::ptr::null_mut();
            let mut end_path = std::ptr::null_mut();
            let ret = from_glib(ffi::gtk_icon_view_get_visible_range(
                self.as_ref().to_glib_none().0,
                &mut start_path,
                &mut end_path,
            ));
            if ret {
                Some((from_glib_full(start_path), from_glib_full(end_path)))
            } else {
                None
            }
        }
    }

    /// Activates the item determined by `path`.
    /// ## `path`
    /// The [`TreePath`][crate::TreePath] to be activated
    #[doc(alias = "gtk_icon_view_item_activated")]
    fn item_activated(&self, path: &TreePath) {
        unsafe {
            ffi::gtk_icon_view_item_activated(
                self.as_ref().to_glib_none().0,
                mut_override(path.to_glib_none().0),
            );
        }
    }

    /// Returns [`true`] if the icon pointed to by `path` is currently
    /// selected. If `path` does not point to a valid location, [`false`] is returned.
    /// ## `path`
    /// A [`TreePath`][crate::TreePath] to check selection on.
    ///
    /// # Returns
    ///
    /// [`true`] if `path` is selected.
    #[doc(alias = "gtk_icon_view_path_is_selected")]
    fn path_is_selected(&self, path: &TreePath) -> bool {
        unsafe {
            from_glib(ffi::gtk_icon_view_path_is_selected(
                self.as_ref().to_glib_none().0,
                mut_override(path.to_glib_none().0),
            ))
        }
    }

    /// Moves the alignments of `self` to the position specified by `path`.
    /// `row_align` determines where the row is placed, and `col_align` determines
    /// where `column` is placed. Both are expected to be between 0.0 and 1.0.
    /// 0.0 means left/top alignment, 1.0 means right/bottom alignment, 0.5 means
    /// center.
    ///
    /// If `use_align` is [`false`], then the alignment arguments are ignored, and the
    /// tree does the minimum amount of work to scroll the item onto the screen.
    /// This means that the item will be scrolled to the edge closest to its current
    /// position. If the item is currently visible on the screen, nothing is done.
    ///
    /// This function only works if the model is set, and `path` is a valid row on
    /// the model. If the model changes before the `self` is realized, the
    /// centered path will be modified to reflect this change.
    /// ## `path`
    /// The path of the item to move to.
    /// ## `use_align`
    /// whether to use alignment arguments, or [`false`].
    /// ## `row_align`
    /// The vertical alignment of the item specified by `path`.
    /// ## `col_align`
    /// The horizontal alignment of the item specified by `path`.
    #[doc(alias = "gtk_icon_view_scroll_to_path")]
    fn scroll_to_path(&self, path: &TreePath, use_align: bool, row_align: f32, col_align: f32) {
        unsafe {
            ffi::gtk_icon_view_scroll_to_path(
                self.as_ref().to_glib_none().0,
                mut_override(path.to_glib_none().0),
                use_align.into_glib(),
                row_align,
                col_align,
            );
        }
    }

    /// Selects all the icons. `self` must has its selection mode set
    /// to [`SelectionMode::Multiple`][crate::SelectionMode::Multiple].
    #[doc(alias = "gtk_icon_view_select_all")]
    fn select_all(&self) {
        unsafe {
            ffi::gtk_icon_view_select_all(self.as_ref().to_glib_none().0);
        }
    }

    /// Selects the row at `path`.
    /// ## `path`
    /// The [`TreePath`][crate::TreePath] to be selected.
    #[doc(alias = "gtk_icon_view_select_path")]
    fn select_path(&self, path: &TreePath) {
        unsafe {
            ffi::gtk_icon_view_select_path(
                self.as_ref().to_glib_none().0,
                mut_override(path.to_glib_none().0),
            );
        }
    }

    /// Calls a function for each selected icon. Note that the model or
    /// selection cannot be modified from within this function.
    /// ## `func`
    /// The function to call for each selected icon.
    #[doc(alias = "gtk_icon_view_selected_foreach")]
    fn selected_foreach<P: FnMut(&IconView, &TreePath)>(&self, func: P) {
        let mut func_data: P = func;
        unsafe extern "C" fn func_func<P: FnMut(&IconView, &TreePath)>(
            icon_view: *mut ffi::GtkIconView,
            path: *mut ffi::GtkTreePath,
            data: glib::ffi::gpointer,
        ) {
            unsafe {
                let icon_view = from_glib_borrow(icon_view);
                let path = from_glib_borrow(path);
                let callback = data as *mut P;
                (*callback)(&icon_view, &path)
            }
        }
        let func = Some(func_func::<P> as _);
        let super_callback0: &mut P = &mut func_data;
        unsafe {
            ffi::gtk_icon_view_selected_foreach(
                self.as_ref().to_glib_none().0,
                func,
                super_callback0 as *mut _ as *mut _,
            );
        }
    }

    /// Causes the [`item-activated`][struct@crate::IconView#item-activated] signal to be emitted on
    /// a single click instead of a double click.
    /// ## `single`
    /// [`true`] to emit item-activated on a single click
    #[doc(alias = "gtk_icon_view_set_activate_on_single_click")]
    #[doc(alias = "activate-on-single-click")]
    fn set_activate_on_single_click(&self, single: bool) {
        unsafe {
            ffi::gtk_icon_view_set_activate_on_single_click(
                self.as_ref().to_glib_none().0,
                single.into_glib(),
            );
        }
    }

    /// Sets the ::column-spacing property which specifies the space
    /// which is inserted between the columns of the icon view.
    /// ## `column_spacing`
    /// the column spacing
    #[doc(alias = "gtk_icon_view_set_column_spacing")]
    #[doc(alias = "column-spacing")]
    fn set_column_spacing(&self, column_spacing: i32) {
        unsafe {
            ffi::gtk_icon_view_set_column_spacing(self.as_ref().to_glib_none().0, column_spacing);
        }
    }

    /// Sets the ::columns property which determines in how
    /// many columns the icons are arranged. If `columns` is
    /// -1, the number of columns will be chosen automatically
    /// to fill the available area.
    /// ## `columns`
    /// the number of columns
    #[doc(alias = "gtk_icon_view_set_columns")]
    #[doc(alias = "columns")]
    fn set_columns(&self, columns: i32) {
        unsafe {
            ffi::gtk_icon_view_set_columns(self.as_ref().to_glib_none().0, columns);
        }
    }

    /// Sets the current keyboard focus to be at `path`, and selects it. This is
    /// useful when you want to focus the user’s attention on a particular item.
    /// If `cell` is not [`None`], then focus is given to the cell specified by
    /// it. Additionally, if `start_editing` is [`true`], then editing should be
    /// started in the specified cell.
    ///
    /// This function is often followed by `gtk_widget_grab_focus
    /// (icon_view)` in order to give keyboard focus to the widget.
    /// Please note that editing can only happen when the widget is realized.
    /// ## `path`
    /// A [`TreePath`][crate::TreePath]
    /// ## `cell`
    /// One of the cell renderers of `self`, or [`None`]
    /// ## `start_editing`
    /// [`true`] if the specified cell should start being edited.
    #[doc(alias = "gtk_icon_view_set_cursor")]
    fn set_cursor(
        &self,
        path: &TreePath,
        cell: Option<&impl IsA<CellRenderer>>,
        start_editing: bool,
    ) {
        unsafe {
            ffi::gtk_icon_view_set_cursor(
                self.as_ref().to_glib_none().0,
                mut_override(path.to_glib_none().0),
                cell.map(|p| p.as_ref()).to_glib_none().0,
                start_editing.into_glib(),
            );
        }
    }

    /// Sets the item that is highlighted for feedback.
    /// ## `path`
    /// The path of the item to highlight, or [`None`].
    /// ## `pos`
    /// Specifies where to drop, relative to the item
    #[doc(alias = "gtk_icon_view_set_drag_dest_item")]
    fn set_drag_dest_item(&self, path: Option<&TreePath>, pos: IconViewDropPosition) {
        unsafe {
            ffi::gtk_icon_view_set_drag_dest_item(
                self.as_ref().to_glib_none().0,
                mut_override(path.to_glib_none().0),
                pos.into_glib(),
            );
        }
    }

    /// Sets the ::item-orientation property which determines whether the labels
    /// are drawn beside the icons instead of below.
    /// ## `orientation`
    /// the relative position of texts and icons
    #[doc(alias = "gtk_icon_view_set_item_orientation")]
    #[doc(alias = "item-orientation")]
    fn set_item_orientation(&self, orientation: Orientation) {
        unsafe {
            ffi::gtk_icon_view_set_item_orientation(
                self.as_ref().to_glib_none().0,
                orientation.into_glib(),
            );
        }
    }

    /// Sets the [`item-padding`][struct@crate::IconView#item-padding] property which specifies the padding
    /// around each of the icon view’s items.
    /// ## `item_padding`
    /// the item padding
    #[doc(alias = "gtk_icon_view_set_item_padding")]
    #[doc(alias = "item-padding")]
    fn set_item_padding(&self, item_padding: i32) {
        unsafe {
            ffi::gtk_icon_view_set_item_padding(self.as_ref().to_glib_none().0, item_padding);
        }
    }

    /// Sets the ::item-width property which specifies the width
    /// to use for each item. If it is set to -1, the icon view will
    /// automatically determine a suitable item size.
    /// ## `item_width`
    /// the width for each item
    #[doc(alias = "gtk_icon_view_set_item_width")]
    #[doc(alias = "item-width")]
    fn set_item_width(&self, item_width: i32) {
        unsafe {
            ffi::gtk_icon_view_set_item_width(self.as_ref().to_glib_none().0, item_width);
        }
    }

    /// Sets the ::margin property which specifies the space
    /// which is inserted at the top, bottom, left and right
    /// of the icon view.
    /// ## `margin`
    /// the margin
    #[doc(alias = "gtk_icon_view_set_margin")]
    #[doc(alias = "margin")]
    fn set_margin(&self, margin: i32) {
        unsafe {
            ffi::gtk_icon_view_set_margin(self.as_ref().to_glib_none().0, margin);
        }
    }

    /// Sets the column with markup information for `self` to be
    /// `column`. The markup column must be of type `G_TYPE_STRING`.
    /// If the markup column is set to something, it overrides
    /// the text column set by [`set_text_column()`][Self::set_text_column()].
    /// ## `column`
    /// A column in the currently used model, or -1 to display no text
    #[doc(alias = "gtk_icon_view_set_markup_column")]
    #[doc(alias = "markup-column")]
    fn set_markup_column(&self, column: i32) {
        unsafe {
            ffi::gtk_icon_view_set_markup_column(self.as_ref().to_glib_none().0, column);
        }
    }

    /// Sets the model for a [`IconView`][crate::IconView].
    /// If the `self` already has a model set, it will remove
    /// it before setting the new model. If `model` is [`None`], then
    /// it will unset the old model.
    /// ## `model`
    /// The model.
    #[doc(alias = "gtk_icon_view_set_model")]
    #[doc(alias = "model")]
    fn set_model(&self, model: Option<&impl IsA<TreeModel>>) {
        unsafe {
            ffi::gtk_icon_view_set_model(
                self.as_ref().to_glib_none().0,
                model.map(|p| p.as_ref()).to_glib_none().0,
            );
        }
    }

    /// Sets the column with pixbufs for `self` to be `column`. The pixbuf
    /// column must be of type `GDK_TYPE_PIXBUF`
    /// ## `column`
    /// A column in the currently used model, or -1 to disable
    #[doc(alias = "gtk_icon_view_set_pixbuf_column")]
    #[doc(alias = "pixbuf-column")]
    fn set_pixbuf_column(&self, column: i32) {
        unsafe {
            ffi::gtk_icon_view_set_pixbuf_column(self.as_ref().to_glib_none().0, column);
        }
    }

    /// This function is a convenience function to allow you to reorder models that
    /// support the `GtkTreeDragSourceIface` and the `GtkTreeDragDestIface`. Both
    /// [`TreeStore`][crate::TreeStore] and [`ListStore`][crate::ListStore] support these. If `reorderable` is [`true`], then
    /// the user can reorder the model by dragging and dropping rows. The
    /// developer can listen to these changes by connecting to the model's
    /// row_inserted and row_deleted signals. The reordering is implemented by setting up
    /// the icon view as a drag source and destination. Therefore, drag and
    /// drop can not be used in a reorderable view for any other purpose.
    ///
    /// This function does not give you any degree of control over the order -- any
    /// reordering is allowed. If more control is needed, you should probably
    /// handle drag and drop manually.
    /// ## `reorderable`
    /// [`true`], if the list of items can be reordered.
    #[doc(alias = "gtk_icon_view_set_reorderable")]
    #[doc(alias = "reorderable")]
    fn set_reorderable(&self, reorderable: bool) {
        unsafe {
            ffi::gtk_icon_view_set_reorderable(
                self.as_ref().to_glib_none().0,
                reorderable.into_glib(),
            );
        }
    }

    /// Sets the ::row-spacing property which specifies the space
    /// which is inserted between the rows of the icon view.
    /// ## `row_spacing`
    /// the row spacing
    #[doc(alias = "gtk_icon_view_set_row_spacing")]
    #[doc(alias = "row-spacing")]
    fn set_row_spacing(&self, row_spacing: i32) {
        unsafe {
            ffi::gtk_icon_view_set_row_spacing(self.as_ref().to_glib_none().0, row_spacing);
        }
    }

    /// Sets the selection mode of the `self`.
    /// ## `mode`
    /// The selection mode
    #[doc(alias = "gtk_icon_view_set_selection_mode")]
    #[doc(alias = "selection-mode")]
    fn set_selection_mode(&self, mode: SelectionMode) {
        unsafe {
            ffi::gtk_icon_view_set_selection_mode(self.as_ref().to_glib_none().0, mode.into_glib());
        }
    }

    /// Sets the ::spacing property which specifies the space
    /// which is inserted between the cells (i.e. the icon and
    /// the text) of an item.
    /// ## `spacing`
    /// the spacing
    #[doc(alias = "gtk_icon_view_set_spacing")]
    #[doc(alias = "spacing")]
    fn set_spacing(&self, spacing: i32) {
        unsafe {
            ffi::gtk_icon_view_set_spacing(self.as_ref().to_glib_none().0, spacing);
        }
    }

    /// Sets the column with text for `self` to be `column`. The text
    /// column must be of type `G_TYPE_STRING`.
    /// ## `column`
    /// A column in the currently used model, or -1 to display no text
    #[doc(alias = "gtk_icon_view_set_text_column")]
    #[doc(alias = "text-column")]
    fn set_text_column(&self, column: i32) {
        unsafe {
            ffi::gtk_icon_view_set_text_column(self.as_ref().to_glib_none().0, column);
        }
    }

    /// Sets the tip area of `tooltip` to the area which `cell` occupies in
    /// the item pointed to by `path`. See also [`Tooltip::set_tip_area()`][crate::Tooltip::set_tip_area()].
    ///
    /// See also [`set_tooltip_column()`][Self::set_tooltip_column()] for a simpler alternative.
    /// ## `tooltip`
    /// a [`Tooltip`][crate::Tooltip]
    /// ## `path`
    /// a [`TreePath`][crate::TreePath]
    /// ## `cell`
    /// a [`CellRenderer`][crate::CellRenderer] or [`None`]
    #[doc(alias = "gtk_icon_view_set_tooltip_cell")]
    fn set_tooltip_cell(
        &self,
        tooltip: &Tooltip,
        path: &TreePath,
        cell: Option<&impl IsA<CellRenderer>>,
    ) {
        unsafe {
            ffi::gtk_icon_view_set_tooltip_cell(
                self.as_ref().to_glib_none().0,
                tooltip.to_glib_none().0,
                mut_override(path.to_glib_none().0),
                cell.map(|p| p.as_ref()).to_glib_none().0,
            );
        }
    }

    /// If you only plan to have simple (text-only) tooltips on full items, you
    /// can use this function to have [`IconView`][crate::IconView] handle these automatically
    /// for you. `column` should be set to the column in `self`’s model
    /// containing the tooltip texts, or -1 to disable this feature.
    ///
    /// When enabled, [`has-tooltip`][struct@crate::Widget#has-tooltip] will be set to [`true`] and
    /// `self` will connect a [`query-tooltip`][struct@crate::Widget#query-tooltip] signal handler.
    ///
    /// Note that the signal handler sets the text with [`Tooltip::set_markup()`][crate::Tooltip::set_markup()],
    /// so &, <, etc have to be escaped in the text.
    /// ## `column`
    /// an integer, which is a valid column number for `self`’s model
    #[doc(alias = "gtk_icon_view_set_tooltip_column")]
    #[doc(alias = "tooltip-column")]
    fn set_tooltip_column(&self, column: i32) {
        unsafe {
            ffi::gtk_icon_view_set_tooltip_column(self.as_ref().to_glib_none().0, column);
        }
    }

    /// Sets the tip area of `tooltip` to be the area covered by the item at `path`.
    /// See also [`set_tooltip_column()`][Self::set_tooltip_column()] for a simpler alternative.
    /// See also [`Tooltip::set_tip_area()`][crate::Tooltip::set_tip_area()].
    /// ## `tooltip`
    /// a [`Tooltip`][crate::Tooltip]
    /// ## `path`
    /// a [`TreePath`][crate::TreePath]
    #[doc(alias = "gtk_icon_view_set_tooltip_item")]
    fn set_tooltip_item(&self, tooltip: &Tooltip, path: &TreePath) {
        unsafe {
            ffi::gtk_icon_view_set_tooltip_item(
                self.as_ref().to_glib_none().0,
                tooltip.to_glib_none().0,
                mut_override(path.to_glib_none().0),
            );
        }
    }

    /// Unselects all the icons.
    #[doc(alias = "gtk_icon_view_unselect_all")]
    fn unselect_all(&self) {
        unsafe {
            ffi::gtk_icon_view_unselect_all(self.as_ref().to_glib_none().0);
        }
    }

    /// Unselects the row at `path`.
    /// ## `path`
    /// The [`TreePath`][crate::TreePath] to be unselected.
    #[doc(alias = "gtk_icon_view_unselect_path")]
    fn unselect_path(&self, path: &TreePath) {
        unsafe {
            ffi::gtk_icon_view_unselect_path(
                self.as_ref().to_glib_none().0,
                mut_override(path.to_glib_none().0),
            );
        }
    }

    /// Undoes the effect of `gtk_icon_view_enable_model_drag_dest()`. Calling this
    /// method sets [`reorderable`][struct@crate::IconView#reorderable] to [`false`].
    #[doc(alias = "gtk_icon_view_unset_model_drag_dest")]
    fn unset_model_drag_dest(&self) {
        unsafe {
            ffi::gtk_icon_view_unset_model_drag_dest(self.as_ref().to_glib_none().0);
        }
    }

    /// Undoes the effect of `gtk_icon_view_enable_model_drag_source()`. Calling this
    /// method sets [`reorderable`][struct@crate::IconView#reorderable] to [`false`].
    #[doc(alias = "gtk_icon_view_unset_model_drag_source")]
    fn unset_model_drag_source(&self) {
        unsafe {
            ffi::gtk_icon_view_unset_model_drag_source(self.as_ref().to_glib_none().0);
        }
    }

    /// The [`CellArea`][crate::CellArea] used to layout cell renderers for this view.
    ///
    /// If no area is specified when creating the icon view with [`IconView::with_area()`][crate::IconView::with_area()]
    /// a [`CellAreaBox`][crate::CellAreaBox] will be used.
    #[doc(alias = "cell-area")]
    fn cell_area(&self) -> Option<CellArea> {
        ObjectExt::property(self.as_ref(), "cell-area")
    }

    /// A [keybinding signal][GtkBindingSignal]
    /// which gets emitted when the user activates the currently
    /// focused item.
    ///
    /// Applications should not connect to it, but may emit it with
    /// `g_signal_emit_by_name()` if they need to control activation
    /// programmatically.
    ///
    /// The default bindings for this signal are Space, Return and Enter.
    #[doc(alias = "activate-cursor-item")]
    fn connect_activate_cursor_item<F: Fn(&Self) -> bool + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn activate_cursor_item_trampoline<
            P: IsA<IconView>,
            F: Fn(&P) -> bool + 'static,
        >(
            this: *mut ffi::GtkIconView,
            f: glib::ffi::gpointer,
        ) -> glib::ffi::gboolean {
            unsafe {
                let f: &F = &*(f as *const F);
                f(IconView::from_glib_borrow(this).unsafe_cast_ref()).into_glib()
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"activate-cursor-item".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    activate_cursor_item_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn emit_activate_cursor_item(&self) -> bool {
        self.emit_by_name("activate-cursor-item", &[])
    }

    /// The ::item-activated signal is emitted when the method
    /// [`item_activated()`][Self::item_activated()] is called, when the user double
    /// clicks an item with the "activate-on-single-click" property set
    /// to [`false`], or when the user single clicks an item when the
    /// "activate-on-single-click" property set to [`true`]. It is also
    /// emitted when a non-editable item is selected and one of the keys:
    /// Space, Return or Enter is pressed.
    /// ## `path`
    /// the [`TreePath`][crate::TreePath] for the activated item
    #[doc(alias = "item-activated")]
    fn connect_item_activated<F: Fn(&Self, &TreePath) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn item_activated_trampoline<
            P: IsA<IconView>,
            F: Fn(&P, &TreePath) + 'static,
        >(
            this: *mut ffi::GtkIconView,
            path: *mut ffi::GtkTreePath,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(
                    IconView::from_glib_borrow(this).unsafe_cast_ref(),
                    &from_glib_borrow(path),
                )
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"item-activated".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    item_activated_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    /// The ::move-cursor signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which gets emitted when the user initiates a cursor movement.
    ///
    /// Applications should not connect to it, but may emit it with
    /// `g_signal_emit_by_name()` if they need to control the cursor
    /// programmatically.
    ///
    /// The default bindings for this signal include
    /// - Arrow keys which move by individual steps
    /// - Home/End keys which move to the first/last item
    /// - PageUp/PageDown which move by "pages"
    /// All of these will extend the selection when combined with
    /// the Shift modifier.
    /// ## `step`
    /// the granularity of the move, as a [`MovementStep`][crate::MovementStep]
    /// ## `count`
    /// the number of `step` units to move
    #[doc(alias = "move-cursor")]
    fn connect_move_cursor<F: Fn(&Self, MovementStep, i32) -> bool + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn move_cursor_trampoline<
            P: IsA<IconView>,
            F: Fn(&P, MovementStep, i32) -> bool + 'static,
        >(
            this: *mut ffi::GtkIconView,
            step: ffi::GtkMovementStep,
            count: std::ffi::c_int,
            f: glib::ffi::gpointer,
        ) -> glib::ffi::gboolean {
            unsafe {
                let f: &F = &*(f as *const F);
                f(
                    IconView::from_glib_borrow(this).unsafe_cast_ref(),
                    from_glib(step),
                    count,
                )
                .into_glib()
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"move-cursor".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    move_cursor_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn emit_move_cursor(&self, step: MovementStep, count: i32) -> bool {
        self.emit_by_name("move-cursor", &[&step, &count])
    }

    /// A [keybinding signal][GtkBindingSignal]
    /// which gets emitted when the user selects all items.
    ///
    /// Applications should not connect to it, but may emit it with
    /// `g_signal_emit_by_name()` if they need to control selection
    /// programmatically.
    ///
    /// The default binding for this signal is Ctrl-a.
    #[doc(alias = "select-all")]
    fn connect_select_all<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn select_all_trampoline<P: IsA<IconView>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkIconView,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(IconView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"select-all".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    select_all_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn emit_select_all(&self) {
        self.emit_by_name::<()>("select-all", &[]);
    }

    /// A [keybinding signal][GtkBindingSignal]
    /// which gets emitted when the user selects the item that is currently
    /// focused.
    ///
    /// Applications should not connect to it, but may emit it with
    /// `g_signal_emit_by_name()` if they need to control selection
    /// programmatically.
    ///
    /// There is no default binding for this signal.
    #[doc(alias = "select-cursor-item")]
    fn connect_select_cursor_item<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn select_cursor_item_trampoline<
            P: IsA<IconView>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkIconView,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(IconView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"select-cursor-item".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    select_cursor_item_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn emit_select_cursor_item(&self) {
        self.emit_by_name::<()>("select-cursor-item", &[]);
    }

    /// The ::selection-changed signal is emitted when the selection
    /// (i.e. the set of selected items) changes.
    #[doc(alias = "selection-changed")]
    fn connect_selection_changed<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn selection_changed_trampoline<P: IsA<IconView>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkIconView,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(IconView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"selection-changed".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    selection_changed_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    /// A [keybinding signal][GtkBindingSignal]
    /// which gets emitted when the user toggles whether the currently
    /// focused item is selected or not. The exact effect of this
    /// depend on the selection mode.
    ///
    /// Applications should not connect to it, but may emit it with
    /// `g_signal_emit_by_name()` if they need to control selection
    /// programmatically.
    ///
    /// There is no default binding for this signal is Ctrl-Space.
    #[doc(alias = "toggle-cursor-item")]
    fn connect_toggle_cursor_item<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn toggle_cursor_item_trampoline<
            P: IsA<IconView>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkIconView,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(IconView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"toggle-cursor-item".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    toggle_cursor_item_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn emit_toggle_cursor_item(&self) {
        self.emit_by_name::<()>("toggle-cursor-item", &[]);
    }

    /// A [keybinding signal][GtkBindingSignal]
    /// which gets emitted when the user unselects all items.
    ///
    /// Applications should not connect to it, but may emit it with
    /// `g_signal_emit_by_name()` if they need to control selection
    /// programmatically.
    ///
    /// The default binding for this signal is Ctrl-Shift-a.
    #[doc(alias = "unselect-all")]
    fn connect_unselect_all<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn unselect_all_trampoline<P: IsA<IconView>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkIconView,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(IconView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"unselect-all".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    unselect_all_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn emit_unselect_all(&self) {
        self.emit_by_name::<()>("unselect-all", &[]);
    }

    #[doc(alias = "activate-on-single-click")]
    fn connect_activate_on_single_click_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn notify_activate_on_single_click_trampoline<
            P: IsA<IconView>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkIconView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(IconView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::activate-on-single-click".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_activate_on_single_click_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "column-spacing")]
    fn connect_column_spacing_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_column_spacing_trampoline<
            P: IsA<IconView>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkIconView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(IconView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::column-spacing".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_column_spacing_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "columns")]
    fn connect_columns_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_columns_trampoline<P: IsA<IconView>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkIconView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(IconView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::columns".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_columns_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "item-orientation")]
    fn connect_item_orientation_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_item_orientation_trampoline<
            P: IsA<IconView>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkIconView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(IconView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::item-orientation".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_item_orientation_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "item-padding")]
    fn connect_item_padding_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_item_padding_trampoline<
            P: IsA<IconView>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkIconView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(IconView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::item-padding".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_item_padding_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "item-width")]
    fn connect_item_width_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_item_width_trampoline<P: IsA<IconView>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkIconView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(IconView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::item-width".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_item_width_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "markup-column")]
    fn connect_markup_column_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_markup_column_trampoline<
            P: IsA<IconView>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkIconView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(IconView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::markup-column".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_markup_column_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "model")]
    fn connect_model_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_model_trampoline<P: IsA<IconView>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkIconView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(IconView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::model".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_model_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "pixbuf-column")]
    fn connect_pixbuf_column_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_pixbuf_column_trampoline<
            P: IsA<IconView>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkIconView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(IconView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::pixbuf-column".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_pixbuf_column_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "reorderable")]
    fn connect_reorderable_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_reorderable_trampoline<
            P: IsA<IconView>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkIconView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(IconView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::reorderable".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_reorderable_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "row-spacing")]
    fn connect_row_spacing_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_row_spacing_trampoline<
            P: IsA<IconView>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkIconView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(IconView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::row-spacing".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_row_spacing_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "selection-mode")]
    fn connect_selection_mode_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_selection_mode_trampoline<
            P: IsA<IconView>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkIconView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(IconView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::selection-mode".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_selection_mode_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "spacing")]
    fn connect_spacing_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_spacing_trampoline<P: IsA<IconView>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkIconView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(IconView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::spacing".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_spacing_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "text-column")]
    fn connect_text_column_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_text_column_trampoline<
            P: IsA<IconView>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkIconView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(IconView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::text-column".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_text_column_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "tooltip-column")]
    fn connect_tooltip_column_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_tooltip_column_trampoline<
            P: IsA<IconView>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkIconView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(IconView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::tooltip-column".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_tooltip_column_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }
}

impl<O: IsA<IconView>> IconViewExt for O {}