gtk4/auto/

svg_widget.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::{Accessible, Buildable, ConstraintTarget, Svg, Widget, ffi};
use glib::{
    object::ObjectType as _,
    prelude::*,
    signal::{SignalHandlerId, connect_raw},
    translate::*,
};
use std::boxed::Box as Box_;

glib::wrapper! {
    /// A widget that renders SVG, with animations and event handling.
    ///
    /// [`SvgWidget`][crate::SvgWidget] uses [`Svg`][crate::Svg] internally, and should read
    /// its documentation to learn about the supported SVG features and
    /// extensions.
    ///
    /// On top of the [`Svg`][crate::Svg] rendering, [`SvgWidget`][crate::SvgWidget] adds event handling.
    /// <kbd>Tab</kbd> and <kbd>Shift</kbd>+<kbd>Tab</kbd> keys can be used
    /// to move the focus and <kbd>Enter</kbd> and clicks will activate links
    /// by emitting the [`activate`][struct@crate::SvgWidget#activate] signal.
    ///
    /// The `tabindex` and `autofocus` attributes can be used to influence
    /// what elements act as focus locations, and where focus goes initially.
    ///
    /// The styling of the SVG content is following input-related pseudo
    /// classes such as `:focus`, `:active`, `:hover` or `:visited`.
    ///
    /// If [`has-tooltip`][struct@crate::Widget#has-tooltip] is set, then the content
    /// of `<title>` elements will be shown as tooltips.
    ///
    /// SVG animations and different `<view>`s can be triggered by input
    /// events as well. The following events are supported: focus, blur,
    /// mouseenter, mouseleave, click.
    /// See the [SVG animation](https://svgwg.org/specs/animations/)
    /// specification for details.
    ///
    /// ## Properties
    ///
    ///
    /// #### `resource`
    ///  Resource to load SVG data from.
    ///
    /// This property is meant for use in ui files.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `state`
    ///  The current state of the renderer.
    ///
    /// This can be a number between 0 and 63.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `stylesheet`
    ///  A CSS stylesheet to apply to the SVG.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `svg`
    ///  The GtkSvg paintable used for rendering.
    ///
    /// This property is mainly useful for making details of the
    /// SVG rendering machinery available in the GTK inspector.
    ///
    /// You should not modify the returned object.
    ///
    /// Readable
    /// <details><summary><h4>Widget</h4></summary>
    ///
    ///
    /// #### `can-focus`
    ///  Whether the widget or any of its descendents can accept
    /// the input focus.
    ///
    /// This property is meant to be set by widget implementations,
    /// typically in their instance init function.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `can-target`
    ///  Whether the widget can receive pointer events.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `css-classes`
    ///  A list of css classes applied to this widget.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `css-name`
    ///  The name of this widget in the CSS tree.
    ///
    /// This property is meant to be set by widget implementations,
    /// typically in their instance init function.
    ///
    /// Readable | Writable | Construct Only
    ///
    ///
    /// #### `cursor`
    ///  The cursor used by @widget.
    ///
    /// 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.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `focusable`
    ///  Whether this widget itself will accept the input focus.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `halign`
    ///  How to distribute horizontal space if widget gets extra space.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `has-default`
    ///  Whether the widget is the default widget.
    ///
    /// Readable
    ///
    ///
    /// #### `has-focus`
    ///  Whether the widget has the input focus.
    ///
    /// Readable
    ///
    ///
    /// #### `has-tooltip`
    ///  Enables or disables the emission of the [`query-tooltip`][struct@crate::Widget#query-tooltip]
    /// signal on @widget.
    ///
    /// A true value indicates that @widget can have a tooltip, in this case
    /// the widget will be queried using [`query-tooltip`][struct@crate::Widget#query-tooltip] to
    /// determine whether it will provide a tooltip or not.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `height-request`
    ///  Overrides for height request of the widget.
    ///
    /// If this is -1, the natural request will be used.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `hexpand`
    ///  Whether to expand horizontally.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `hexpand-set`
    ///  Whether to use the `hexpand` property.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `layout-manager`
    ///  The [`LayoutManager`][crate::LayoutManager] instance to use to compute
    /// the preferred size of the widget, and allocate its children.
    ///
    /// This property is meant to be set by widget implementations,
    /// typically in their instance init function.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `limit-events`
    ///  Makes this widget act like a modal dialog, with respect to
    /// event delivery.
    ///
    /// Global event controllers will not handle events with targets
    /// inside the widget, unless they are set up to ignore propagation
    /// limits. See [`EventControllerExt::set_propagation_limit()`][crate::prelude::EventControllerExt::set_propagation_limit()].
    ///
    /// 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-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`
    ///  The name of the widget.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `opacity`
    ///  The requested opacity of the widget.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `overflow`
    ///  How content outside the widget's content area is treated.
    ///
    /// This property is meant to be set by widget implementations,
    /// typically in their instance init function.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `parent`
    ///  The parent widget of this widget.
    ///
    /// Readable
    ///
    ///
    /// #### `receives-default`
    ///  Whether the widget will receive the default action when it is focused.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `root`
    ///  The [`Root`][crate::Root] widget of the widget tree containing this widget.
    ///
    /// This will be `NULL` if the widget is not contained in a root widget.
    ///
    /// Readable
    ///
    ///
    /// #### `scale-factor`
    ///  The scale factor of the widget.
    ///
    /// Readable
    ///
    ///
    /// #### `sensitive`
    ///  Whether the widget responds to input.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `tooltip-markup`
    ///  Sets the text of tooltip to be the given string, which is marked up
    /// with Pango markup.
    ///
    /// Also see [`Tooltip::set_markup()`][crate::Tooltip::set_markup()].
    ///
    /// This is a convenience property which will take care of getting the
    /// tooltip shown if the given string is not `NULL`:
    /// [`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 `NULL`:
    /// [`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.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `vexpand`
    ///  Whether to expand vertically.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `vexpand-set`
    ///  Whether to use the `vexpand` property.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `visible`
    ///  Whether the widget is visible.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `width-request`
    ///  Overrides for width request of the widget.
    ///
    /// If this is -1, the natural request will be used.
    ///
    /// Readable | Writable
    /// </details>
    /// <details><summary><h4>Accessible</h4></summary>
    ///
    ///
    /// #### `accessible-role`
    ///  The accessible role of the given [`Accessible`][crate::Accessible] implementation.
    ///
    /// The accessible role cannot be changed once set.
    ///
    /// Readable | Writable
    /// </details>
    ///
    /// ## Signals
    ///
    ///
    /// #### `activate`
    ///  Emitted when a link or other element is activated.
    ///
    /// Activating elements can be achieved by clicking
    /// or by hitting <kbd>Enter</kbd> while the element
    /// has focus.
    ///
    ///
    ///
    ///
    /// #### `error`
    ///  Signals that an error occurred.
    ///
    /// Errors can occur both during parsing and during rendering.
    ///
    /// The expected error values are in the [`SvgError`][crate::SvgError] enumeration,
    /// context information about the location of parsing errors can
    /// be obtained with the various `gtk_svg_error` functions.
    ///
    /// Parsing errors are never fatal, so the parsing will resume after
    /// the error. Errors may however cause parts of the given data or
    /// even all of it to not be parsed at all. So it is a useful idea
    /// to check that the parsing succeeds by connecting to this signal.
    ///
    /// ::: note
    ///     This signal is emitted in the middle of parsing or rendering,
    ///     and if you handle it, you must be careful. Logging the errors
    ///     you receive is fine, but modifying the widget hierarchy or
    ///     changing the paintable state definitively isn't.
    ///
    ///     If in doubt, defer to an idle.
    ///
    ///
    /// <details><summary><h4>Widget</h4></summary>
    ///
    ///
    /// #### `destroy`
    ///  Signals that all holders of a reference to the widget should release
    /// the reference that they hold.
    ///
    /// May result in finalization of the widget if all references are released.
    ///
    /// This signal is not suitable for saving widget state.
    ///
    ///
    ///
    ///
    /// #### `direction-changed`
    ///  Emitted when the text direction of a widget changes.
    ///
    ///
    ///
    ///
    /// #### `hide`
    ///  Emitted when @widget is hidden.
    ///
    ///
    ///
    ///
    /// #### `keynav-failed`
    ///  Emitted if keyboard navigation fails.
    ///
    /// See [`WidgetExt::keynav_failed()`][crate::prelude::WidgetExt::keynav_failed()] for details.
    ///
    ///
    ///
    ///
    /// #### `map`
    ///  Emitted when @widget is going to be mapped.
    ///
    /// A widget is mapped when the widget is visible (which is controlled with
    /// [`visible`][struct@crate::Widget#visible]) and all its parents up to the toplevel widget
    /// are also visible.
    ///
    /// The `::map` signal can be used to determine whether a widget will be drawn,
    /// for instance it can resume an animation that was stopped during the
    /// emission of [`unmap`][struct@crate::Widget#unmap].
    ///
    ///
    ///
    ///
    /// #### `mnemonic-activate`
    ///  Emitted when a widget is activated via a mnemonic.
    ///
    /// The default handler for this signal activates @widget if @group_cycling
    /// is false, or just makes @widget grab focus if @group_cycling is true.
    ///
    ///
    ///
    ///
    /// #### `move-focus`
    ///  Emitted when the focus is moved.
    ///
    /// The `::move-focus` signal is a [keybinding signal](class.SignalAction.html).
    ///
    /// The default bindings for this signal are <kbd>Tab</kbd> to move forward,
    /// and <kbd>Shift</kbd>+<kbd>Tab</kbd> to move backward.
    ///
    /// Action
    ///
    ///
    /// #### `query-tooltip`
    ///  Emitted when the widget’s tooltip is about to be shown.
    ///
    /// This happens when the [`has-tooltip`][struct@crate::Widget#has-tooltip] property
    /// is true and the hover timeout has expired with the cursor hovering
    /// above @widget; or emitted when @widget got focus in keyboard mode.
    ///
    /// Using the given coordinates, the signal handler should determine
    /// whether a tooltip should be shown for @widget. If this is the case
    /// true should be returned, false otherwise. Note that if @keyboard_mode
    /// is true, the values of @x and @y are undefined and should not be used.
    ///
    /// The signal handler is free to manipulate @tooltip with the therefore
    /// destined function calls.
    ///
    ///
    ///
    ///
    /// #### `realize`
    ///  Emitted when @widget is associated with a [`gdk::Surface`][crate::gdk::Surface].
    ///
    /// This means that [`WidgetExt::realize()`][crate::prelude::WidgetExt::realize()] has been called
    /// or the widget has been mapped (that is, it is going to be drawn).
    ///
    ///
    ///
    ///
    /// #### `show`
    ///  Emitted when @widget is shown.
    ///
    ///
    ///
    ///
    /// #### `state-flags-changed`
    ///  Emitted when the widget state changes.
    ///
    /// See [`WidgetExt::state_flags()`][crate::prelude::WidgetExt::state_flags()].
    ///
    ///
    ///
    ///
    /// #### `unmap`
    ///  Emitted when @widget is going to be unmapped.
    ///
    /// A widget is unmapped when either it or any of its parents up to the
    /// toplevel widget have been set as hidden.
    ///
    /// As `::unmap` indicates that a widget will not be shown any longer,
    /// it can be used to, for example, stop an animation on the widget.
    ///
    ///
    ///
    ///
    /// #### `unrealize`
    ///  Emitted when the [`gdk::Surface`][crate::gdk::Surface] associated with @widget is destroyed.
    ///
    /// This means that [`WidgetExt::unrealize()`][crate::prelude::WidgetExt::unrealize()] has been called
    /// or the widget has been unmapped (that is, it is going to be hidden).
    ///
    ///
    /// </details>
    ///
    /// # Implements
    ///
    /// [`WidgetExt`][trait@crate::prelude::WidgetExt], [`trait@glib::ObjectExt`], [`AccessibleExt`][trait@crate::prelude::AccessibleExt], [`BuildableExt`][trait@crate::prelude::BuildableExt], [`ConstraintTargetExt`][trait@crate::prelude::ConstraintTargetExt], [`WidgetExtManual`][trait@crate::prelude::WidgetExtManual], [`AccessibleExtManual`][trait@crate::prelude::AccessibleExtManual]
    #[doc(alias = "GtkSvgWidget")]
    pub struct SvgWidget(Object<ffi::GtkSvgWidget, ffi::GtkSvgWidgetClass>) @extends Widget, @implements Accessible, Buildable, ConstraintTarget;

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

impl SvgWidget {
    /// Creates a new, empty [`SvgWidget`][crate::SvgWidget].
    ///
    /// # Returns
    ///
    /// the new widget
    #[doc(alias = "gtk_svg_widget_new")]
    pub fn new() -> SvgWidget {
        assert_initialized_main_thread!();
        unsafe { from_glib_none(ffi::gtk_svg_widget_new()) }
    }

    /// Gets the current state of the widget.
    ///
    /// # Returns
    ///
    /// the state
    #[doc(alias = "gtk_svg_widget_get_state")]
    #[doc(alias = "get_state")]
    pub fn state(&self) -> u32 {
        unsafe { ffi::gtk_svg_widget_get_state(self.to_glib_none().0) }
    }

    /// Gets the CSS user stylesheet.
    ///
    /// # Returns
    ///
    /// a `GBytes` with the CSS data
    #[doc(alias = "gtk_svg_widget_get_stylesheet")]
    #[doc(alias = "get_stylesheet")]
    pub fn stylesheet(&self) -> Option<glib::Bytes> {
        unsafe { from_glib_full(ffi::gtk_svg_widget_get_stylesheet(self.to_glib_none().0)) }
    }

    /// Loads SVG content into an existing SVG widget.
    ///
    /// To track errors while loading SVG content, connect
    /// to the [`error`][struct@crate::SvgWidget#error] signal.
    ///
    /// This clears any previously loaded content.
    /// ## `bytes`
    /// the data to data
    #[doc(alias = "gtk_svg_widget_load_from_bytes")]
    pub fn load_from_bytes(&self, bytes: &glib::Bytes) {
        unsafe {
            ffi::gtk_svg_widget_load_from_bytes(self.to_glib_none().0, bytes.to_glib_none().0);
        }
    }

    /// Sets the state of the widget.
    ///
    /// The state change will apply transitions that are defined
    /// in the SVG. See [`Svg`][crate::Svg] for details about states
    /// and transitions.
    /// ## `state`
    /// the state to set, as a value between 0 and 63
    #[doc(alias = "gtk_svg_widget_set_state")]
    #[doc(alias = "state")]
    pub fn set_state(&self, state: u32) {
        unsafe {
            ffi::gtk_svg_widget_set_state(self.to_glib_none().0, state);
        }
    }

    /// Sets a CSS user stylesheet to use.
    ///
    /// Note that styles are applied at load time, so this
    /// function must be called before loading SVG.
    /// ## `bytes`
    /// CSS data
    #[doc(alias = "gtk_svg_widget_set_stylesheet")]
    #[doc(alias = "stylesheet")]
    pub fn set_stylesheet(&self, bytes: Option<&glib::Bytes>) {
        unsafe {
            ffi::gtk_svg_widget_set_stylesheet(self.to_glib_none().0, bytes.to_glib_none().0);
        }
    }

    /// Resource to load SVG data from.
    ///
    /// This property is meant for use in ui files.
    #[cfg(feature = "v4_24")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v4_24")))]
    pub fn resource(&self) -> Option<glib::GString> {
        ObjectExt::property(self, "resource")
    }

    /// Resource to load SVG data from.
    ///
    /// This property is meant for use in ui files.
    #[cfg(feature = "v4_24")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v4_24")))]
    pub fn set_resource(&self, resource: Option<&str>) {
        ObjectExt::set_property(self, "resource", resource)
    }

    /// The GtkSvg paintable used for rendering.
    ///
    /// This property is mainly useful for making details of the
    /// SVG rendering machinery available in the GTK inspector.
    ///
    /// You should not modify the returned object.
    #[cfg(feature = "v4_24")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v4_24")))]
    pub fn svg(&self) -> Option<Svg> {
        ObjectExt::property(self, "svg")
    }

    /// Emitted when a link or other element is activated.
    ///
    /// Activating elements can be achieved by clicking
    /// or by hitting <kbd>Enter</kbd> while the element
    /// has focus.
    /// ## `id`
    /// the ID of the element
    /// ## `href`
    /// the href, if the element is a link
    #[cfg(feature = "v4_24")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v4_24")))]
    #[doc(alias = "activate")]
    pub fn connect_activate<F: Fn(&Self, Option<&str>, Option<&str>) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn activate_trampoline<
            F: Fn(&SvgWidget, Option<&str>, Option<&str>) + 'static,
        >(
            this: *mut ffi::GtkSvgWidget,
            id: *mut std::ffi::c_char,
            href: *mut std::ffi::c_char,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(
                    &from_glib_borrow(this),
                    Option::<glib::GString>::from_glib_borrow(id)
                        .as_ref()
                        .as_ref()
                        .map(|s| s.as_str()),
                    Option::<glib::GString>::from_glib_borrow(href)
                        .as_ref()
                        .as_ref()
                        .map(|s| s.as_str()),
                )
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"activate".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    activate_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    /// Signals that an error occurred.
    ///
    /// Errors can occur both during parsing and during rendering.
    ///
    /// The expected error values are in the [`SvgError`][crate::SvgError] enumeration,
    /// context information about the location of parsing errors can
    /// be obtained with the various `gtk_svg_error` functions.
    ///
    /// Parsing errors are never fatal, so the parsing will resume after
    /// the error. Errors may however cause parts of the given data or
    /// even all of it to not be parsed at all. So it is a useful idea
    /// to check that the parsing succeeds by connecting to this signal.
    ///
    /// ::: note
    ///     This signal is emitted in the middle of parsing or rendering,
    ///     and if you handle it, you must be careful. Logging the errors
    ///     you receive is fine, but modifying the widget hierarchy or
    ///     changing the paintable state definitively isn't.
    ///
    ///     If in doubt, defer to an idle.
    /// ## `error`
    /// the error
    #[cfg(feature = "v4_24")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v4_24")))]
    #[doc(alias = "error")]
    pub fn connect_error<F: Fn(&Self, &glib::Error) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn error_trampoline<F: Fn(&SvgWidget, &glib::Error) + 'static>(
            this: *mut ffi::GtkSvgWidget,
            error: *mut glib::ffi::GError,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(&from_glib_borrow(this), &from_glib_borrow(error))
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"error".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    error_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[cfg(feature = "v4_24")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v4_24")))]
    #[doc(alias = "resource")]
    pub fn connect_resource_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_resource_trampoline<F: Fn(&SvgWidget) + 'static>(
            this: *mut ffi::GtkSvgWidget,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(&from_glib_borrow(this))
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::resource".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_resource_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[cfg(feature = "v4_24")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v4_24")))]
    #[doc(alias = "state")]
    pub fn connect_state_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_state_trampoline<F: Fn(&SvgWidget) + 'static>(
            this: *mut ffi::GtkSvgWidget,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(&from_glib_borrow(this))
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::state".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_state_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[cfg(feature = "v4_24")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v4_24")))]
    #[doc(alias = "stylesheet")]
    pub fn connect_stylesheet_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_stylesheet_trampoline<F: Fn(&SvgWidget) + 'static>(
            this: *mut ffi::GtkSvgWidget,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(&from_glib_borrow(this))
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::stylesheet".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_stylesheet_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[cfg(feature = "v4_24")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v4_24")))]
    #[doc(alias = "svg")]
    pub fn connect_svg_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_svg_trampoline<F: Fn(&SvgWidget) + 'static>(
            this: *mut ffi::GtkSvgWidget,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(&from_glib_borrow(this))
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::svg".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_svg_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }
}

#[cfg(feature = "v4_24")]
#[cfg_attr(docsrs, doc(cfg(feature = "v4_24")))]
impl Default for SvgWidget {
    fn default() -> Self {
        Self::new()
    }
}