gtk4/auto/

svg.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

#[cfg(feature = "v4_24")]
#[cfg_attr(docsrs, doc(cfg(feature = "v4_24")))]
use crate::{Overflow, Settings};
use crate::{SvgFeatures, SymbolicPaintable, ffi};
use glib::{
    object::ObjectType as _,
    prelude::*,
    signal::{SignalHandlerId, connect_raw},
    translate::*,
};
use std::boxed::Box as Box_;

glib::wrapper! {
    /// `.
    ///
    /// ## Properties
    ///
    ///
    /// #### `features`
    ///  Enabled features for this paintable.
    ///
    /// Note that features have to be set before
    /// loading SVG data to take effect.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `overflow`
    ///  Whether the rendering will be clipped to the bounds.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `playing`
    ///  Whether the paintable is currently animating its content.
    ///
    /// To set this property, use the [`Svg::play()`][crate::Svg::play()] and
    /// [`Svg::pause()`][crate::Svg::pause()] functions.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `resource`
    ///  Resource to load SVG data from.
    ///
    /// This property is meant to create a paintable
    /// from a resource 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
    ///
    ///
    /// #### `weight`
    ///  If not set to -1, this value overrides the weight used
    /// when rendering the paintable.
    ///
    /// Readable | Writable
    ///
    /// ## Signals
    ///
    ///
    /// #### `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>Paintable</h4></summary>
    ///
    ///
    /// #### `invalidate-contents`
    ///  Emitted when the contents of the @paintable change.
    ///
    /// Examples for such an event would be videos changing to the next frame or
    /// the icon theme for an icon changing.
    ///
    ///
    ///
    ///
    /// #### `invalidate-size`
    ///  Emitted when the intrinsic size of the @paintable changes.
    ///
    /// This means the values reported by at least one of
    /// [`PaintableExtManual::intrinsic_width()`][crate::gdk::prelude::PaintableExtManual::intrinsic_width()],
    /// [`PaintableExtManual::intrinsic_height()`][crate::gdk::prelude::PaintableExtManual::intrinsic_height()] or
    /// [`PaintableExtManual::intrinsic_aspect_ratio()`][crate::gdk::prelude::PaintableExtManual::intrinsic_aspect_ratio()]
    /// has changed.
    ///
    /// Examples for such an event would be a paintable displaying
    /// the contents of a toplevel surface being resized.
    ///
    ///
    /// </details>
    ///
    /// # Implements
    ///
    /// [`trait@glib::ObjectExt`], [`trait@gdk::prelude::PaintableExt`], [`SymbolicPaintableExt`][trait@crate::prelude::SymbolicPaintableExt]
    #[doc(alias = "GtkSvg")]
    pub struct Svg(Object<ffi::GtkSvg, ffi::GtkSvgClass>) @implements gdk::Paintable, SymbolicPaintable;

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

impl Svg {
    /// Creates a new, empty SVG paintable.
    ///
    /// # Returns
    ///
    /// the paintable
    #[doc(alias = "gtk_svg_new")]
    pub fn new() -> Svg {
        assert_initialized_main_thread!();
        unsafe { from_glib_full(ffi::gtk_svg_new()) }
    }

    /// Parses the SVG data in @bytes and creates a paintable.
    /// ## `bytes`
    /// the data
    ///
    /// # Returns
    ///
    /// the paintable
    #[doc(alias = "gtk_svg_new_from_bytes")]
    #[doc(alias = "new_from_bytes")]
    pub fn from_bytes(bytes: &glib::Bytes) -> Svg {
        assert_initialized_main_thread!();
        unsafe { from_glib_full(ffi::gtk_svg_new_from_bytes(bytes.to_glib_none().0)) }
    }

    /// Parses the SVG data in the resource and creates a paintable.
    /// ## `path`
    /// the resource path
    ///
    /// # Returns
    ///
    /// the paintable
    #[doc(alias = "gtk_svg_new_from_resource")]
    #[doc(alias = "new_from_resource")]
    pub fn from_resource(path: &str) -> Svg {
        assert_initialized_main_thread!();
        unsafe { from_glib_full(ffi::gtk_svg_new_from_resource(path.to_glib_none().0)) }
    }

    /// Returns the currently enabled features.
    ///
    /// # Returns
    ///
    /// the enabled features
    #[doc(alias = "gtk_svg_get_features")]
    #[doc(alias = "get_features")]
    pub fn features(&self) -> SvgFeatures {
        unsafe { from_glib(ffi::gtk_svg_get_features(self.to_glib_none().0)) }
    }

    /// Gets the current overflow value.
    ///
    /// # Returns
    ///
    /// the current overflow value
    #[cfg(feature = "v4_24")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v4_24")))]
    #[doc(alias = "gtk_svg_get_overflow")]
    #[doc(alias = "get_overflow")]
    pub fn overflow(&self) -> Overflow {
        unsafe { from_glib(ffi::gtk_svg_get_overflow(self.to_glib_none().0)) }
    }

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

    /// Returns a `NULL`-terminated array of
    /// state names, if available.
    ///
    /// Note that the returned array and the strings
    /// contained in it will only be valid until the
    /// [`Svg`][crate::Svg] is cleared or reloaded, so if you
    /// want to keep it around, you should make a copy.
    ///
    /// # Returns
    ///
    /// the state names
    ///
    /// ## `length`
    /// return location for the number
    ///   of strings that are returned
    #[doc(alias = "gtk_svg_get_state_names")]
    #[doc(alias = "get_state_names")]
    pub fn state_names(&self) -> (Vec<glib::GString>, u32) {
        unsafe {
            let mut length = std::mem::MaybeUninit::uninit();
            let ret = FromGlibPtrContainer::from_glib_none(ffi::gtk_svg_get_state_names(
                self.to_glib_none().0,
                length.as_mut_ptr(),
            ));
            (ret, length.assume_init())
        }
    }

    /// Gets the CSS user stylesheet.
    ///
    /// # Returns
    ///
    /// a `GBytes` with the CSS data
    #[cfg(feature = "v4_24")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v4_24")))]
    #[doc(alias = "gtk_svg_get_stylesheet")]
    #[doc(alias = "get_stylesheet")]
    pub fn stylesheet(&self) -> Option<glib::Bytes> {
        unsafe { from_glib_full(ffi::gtk_svg_get_stylesheet(self.to_glib_none().0)) }
    }

    /// Gets the value of the weight property.
    ///
    /// # Returns
    ///
    /// the weight
    #[doc(alias = "gtk_svg_get_weight")]
    #[doc(alias = "get_weight")]
    pub fn weight(&self) -> f64 {
        unsafe { ffi::gtk_svg_get_weight(self.to_glib_none().0) }
    }

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

    /// Loads SVG content into an existing SVG paintable.
    ///
    /// To track errors while loading SVG content,
    /// connect to the [`error`][struct@crate::Svg#error] signal.
    ///
    /// This clears any previously loaded content.
    /// ## `path`
    /// the resource path
    #[doc(alias = "gtk_svg_load_from_resource")]
    pub fn load_from_resource(&self, path: &str) {
        unsafe {
            ffi::gtk_svg_load_from_resource(self.to_glib_none().0, path.to_glib_none().0);
        }
    }

    /// Stop any playing animations and state transitions.
    ///
    /// SvgAnimations can be paused and started repeatedly.
    #[doc(alias = "gtk_svg_pause")]
    pub fn pause(&self) {
        unsafe {
            ffi::gtk_svg_pause(self.to_glib_none().0);
        }
    }

    /// Start playing animations and state transitions.
    ///
    /// SvgAnimations can be paused and started repeatedly.
    #[doc(alias = "gtk_svg_play")]
    pub fn play(&self) {
        unsafe {
            ffi::gtk_svg_play(self.to_glib_none().0);
        }
    }

    /// Serializes the content of the renderer as SVG.
    ///
    /// The SVG will be similar to the orignally loaded one,
    /// but is not guaranteed to be 100% identical.
    ///
    /// This function serializes the DOM, i.e. the results
    /// of parsing the SVG. It does not reflect the effect
    /// of applying animations.
    ///
    /// # Returns
    ///
    /// the serialized contents
    #[doc(alias = "gtk_svg_serialize")]
    pub fn serialize(&self) -> glib::Bytes {
        unsafe { from_glib_full(ffi::gtk_svg_serialize(self.to_glib_none().0)) }
    }

    /// Enables or disables features of the SVG paintable.
    ///
    /// By default, all features are enabled.
    ///
    /// Note that this call only has an effect before the
    /// SVG is loaded.
    /// ## `features`
    /// features to enable
    #[doc(alias = "gtk_svg_set_features")]
    #[doc(alias = "features")]
    pub fn set_features(&self, features: SvgFeatures) {
        unsafe {
            ffi::gtk_svg_set_features(self.to_glib_none().0, features.into_glib());
        }
    }

    /// Sets a frame clock.
    ///
    /// Without a frame clock, GtkSvg will not advance animations.
    /// ## `clock`
    /// the frame clock
    #[doc(alias = "gtk_svg_set_frame_clock")]
    pub fn set_frame_clock(&self, clock: &gdk::FrameClock) {
        unsafe {
            ffi::gtk_svg_set_frame_clock(self.to_glib_none().0, clock.to_glib_none().0);
        }
    }

    /// Sets whether the rendering will be clipped
    /// to the bounds.
    ///
    /// Clipping is expected for [`gdk::Paintable`][crate::gdk::Paintable]
    /// semantics, so this property should not be
    /// changed when using a [`Svg`][crate::Svg] as a paintable.
    /// ## `overflow`
    /// the new overflow value
    #[cfg(feature = "v4_24")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v4_24")))]
    #[doc(alias = "gtk_svg_set_overflow")]
    #[doc(alias = "overflow")]
    pub fn set_overflow(&self, overflow: Overflow) {
        unsafe {
            ffi::gtk_svg_set_overflow(self.to_glib_none().0, overflow.into_glib());
        }
    }

    /// Sets a settings object holding settinsg used when
    /// rendering the SVG.
    /// ## `settings`
    /// the settings object
    #[cfg(feature = "v4_24")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v4_24")))]
    #[doc(alias = "gtk_svg_set_settings")]
    pub fn set_settings(&self, settings: Option<&Settings>) {
        unsafe {
            ffi::gtk_svg_set_settings(self.to_glib_none().0, settings.to_glib_none().0);
        }
    }

    /// Sets the state of the paintable.
    ///
    /// If the paintable is currently playing, the state change
    /// will apply transitions that are defined in the SVG. If
    /// the paintable is not playing, the state change will take
    /// effect instantaneously.
    /// ## `state`
    /// the state to set, as a value between 0 and 63
    #[doc(alias = "gtk_svg_set_state")]
    #[doc(alias = "state")]
    pub fn set_state(&self, state: u32) {
        unsafe {
            ffi::gtk_svg_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
    #[cfg(feature = "v4_24")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v4_24")))]
    #[doc(alias = "gtk_svg_set_stylesheet")]
    #[doc(alias = "stylesheet")]
    pub fn set_stylesheet(&self, bytes: Option<&glib::Bytes>) {
        unsafe {
            ffi::gtk_svg_set_stylesheet(self.to_glib_none().0, bytes.to_glib_none().0);
        }
    }

    /// Sets the weight that is used when rendering.
    ///
    /// The weight affects the effective linewidth when stroking
    /// paths.
    ///
    /// The default value of -1 means to use the font weight
    /// from CSS.
    /// ## `weight`
    /// the font weight, as a value between -1 and 1000
    #[doc(alias = "gtk_svg_set_weight")]
    #[doc(alias = "weight")]
    pub fn set_weight(&self, weight: f64) {
        unsafe {
            ffi::gtk_svg_set_weight(self.to_glib_none().0, weight);
        }
    }

    /// Serializes the paintable, and saves the result to a file.
    /// ## `filename`
    /// the file to save to
    ///
    /// # Returns
    ///
    /// true, unless an error occurred
    #[doc(alias = "gtk_svg_write_to_file")]
    pub fn write_to_file(&self, filename: &str) -> Result<(), glib::Error> {
        unsafe {
            let mut error = std::ptr::null_mut();
            let is_ok = ffi::gtk_svg_write_to_file(
                self.to_glib_none().0,
                filename.to_glib_none().0,
                &mut error,
            );
            debug_assert_eq!(is_ok == glib::ffi::GFALSE, !error.is_null());
            if error.is_null() {
                Ok(())
            } else {
                Err(from_glib_full(error))
            }
        }
    }

    /// Whether the paintable is currently animating its content.
    ///
    /// To set this property, use the [`play()`][Self::play()] and
    /// [`pause()`][Self::pause()] functions.
    #[cfg(feature = "v4_22")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v4_22")))]
    pub fn is_playing(&self) -> bool {
        ObjectExt::property(self, "playing")
    }

    /// Whether the paintable is currently animating its content.
    ///
    /// To set this property, use the [`play()`][Self::play()] and
    /// [`pause()`][Self::pause()] functions.
    #[cfg(feature = "v4_22")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v4_22")))]
    pub fn set_playing(&self, playing: bool) {
        ObjectExt::set_property(self, "playing", playing)
    }

    /// Resource to load SVG data from.
    ///
    /// This property is meant to create a paintable
    /// from a resource in ui files.
    #[cfg(feature = "v4_22")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v4_22")))]
    pub fn resource(&self) -> Option<glib::GString> {
        ObjectExt::property(self, "resource")
    }

    /// Resource to load SVG data from.
    ///
    /// This property is meant to create a paintable
    /// from a resource in ui files.
    #[cfg(feature = "v4_22")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v4_22")))]
    pub fn set_resource(&self, resource: Option<&str>) {
        ObjectExt::set_property(self, "resource", resource)
    }

    /// 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_22")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v4_22")))]
    #[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(&Svg, &glib::Error) + 'static>(
            this: *mut ffi::GtkSvg,
            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_22")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v4_22")))]
    #[doc(alias = "features")]
    pub fn connect_features_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_features_trampoline<F: Fn(&Svg) + 'static>(
            this: *mut ffi::GtkSvg,
            _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::features".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_features_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[cfg(feature = "v4_24")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v4_24")))]
    #[doc(alias = "overflow")]
    pub fn connect_overflow_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_overflow_trampoline<F: Fn(&Svg) + 'static>(
            this: *mut ffi::GtkSvg,
            _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::overflow".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_overflow_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[cfg(feature = "v4_22")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v4_22")))]
    #[doc(alias = "playing")]
    pub fn connect_playing_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_playing_trampoline<F: Fn(&Svg) + 'static>(
            this: *mut ffi::GtkSvg,
            _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::playing".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_playing_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[cfg(feature = "v4_22")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v4_22")))]
    #[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(&Svg) + 'static>(
            this: *mut ffi::GtkSvg,
            _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_22")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v4_22")))]
    #[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(&Svg) + 'static>(
            this: *mut ffi::GtkSvg,
            _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(&Svg) + 'static>(
            this: *mut ffi::GtkSvg,
            _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_22")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v4_22")))]
    #[doc(alias = "weight")]
    pub fn connect_weight_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_weight_trampoline<F: Fn(&Svg) + 'static>(
            this: *mut ffi::GtkSvg,
            _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::weight".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_weight_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }
}

#[cfg(feature = "v4_22")]
#[cfg_attr(docsrs, doc(cfg(feature = "v4_22")))]
impl Default for Svg {
    fn default() -> Self {
        Self::new()
    }
}