// This file was generated by gir (https://github.com/gtk-rs/gir)
// from gir-files (https://github.com/gtk-rs/gir-files.git)
// DO NOT EDIT

use crate::Accessible;
use crate::Adjustment;
use crate::Buildable;
use crate::ConstraintTarget;
use crate::Orientable;
use crate::ScrollType;
use crate::Widget;
use glib::object::Cast;
use glib::object::IsA;
use glib::object::ObjectExt;
use glib::signal::connect_raw;
use glib::signal::SignalHandlerId;
use glib::translate::*;
use std::boxed::Box as Box_;
use std::fmt;
use std::mem;
use std::mem::transmute;

glib::wrapper! {
    /// [`Range`][crate::Range] is the common base class for widgets which visualize an
    /// adjustment.
    ///
    /// Widgets that are derived from [`Range`][crate::Range] include
    /// [`Scale`][crate::Scale] and [`Scrollbar`][crate::Scrollbar].
    ///
    /// Apart from signals for monitoring the parameters of the adjustment,
    /// [`Range`][crate::Range] provides properties and methods for setting a
    /// “fill level” on range widgets. See [`RangeExt::set_fill_level()`][crate::prelude::RangeExt::set_fill_level()].
    ///
    /// # Implements
    ///
    /// [`RangeExt`][trait@crate::prelude::RangeExt], [`WidgetExt`][trait@crate::prelude::WidgetExt], [`trait@glib::ObjectExt`], [`AccessibleExt`][trait@crate::prelude::AccessibleExt], [`BuildableExt`][trait@crate::prelude::BuildableExt], [`ConstraintTargetExt`][trait@crate::prelude::ConstraintTargetExt], [`OrientableExt`][trait@crate::prelude::OrientableExt], [`WidgetExtManual`][trait@crate::prelude::WidgetExtManual], [`AccessibleExtManual`][trait@crate::prelude::AccessibleExtManual]
    #[doc(alias = "GtkRange")]
    pub struct Range(Object<ffi::GtkRange, ffi::GtkRangeClass>) @extends Widget, @implements Accessible, Buildable, ConstraintTarget, Orientable;

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

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

/// Trait containing all [`struct@Range`] methods.
///
/// # Implementors
///
/// [`Range`][struct@crate::Range], [`Scale`][struct@crate::Scale]
pub trait RangeExt: 'static {
    /// Get the adjustment which is the “model” object for [`Range`][crate::Range].
    ///
    /// # Returns
    ///
    /// a [`Adjustment`][crate::Adjustment]
    #[doc(alias = "gtk_range_get_adjustment")]
    #[doc(alias = "get_adjustment")]
    fn adjustment(&self) -> Adjustment;

    /// Gets the current position of the fill level indicator.
    ///
    /// # Returns
    ///
    /// The current fill level
    #[doc(alias = "gtk_range_get_fill_level")]
    #[doc(alias = "get_fill_level")]
    fn fill_level(&self) -> f64;

    /// Gets whether the [`Range`][crate::Range] respects text direction.
    ///
    /// See [`set_flippable()`][Self::set_flippable()].
    ///
    /// # Returns
    ///
    /// [`true`] if the range is flippable
    #[doc(alias = "gtk_range_get_flippable")]
    #[doc(alias = "get_flippable")]
    fn is_flippable(&self) -> bool;

    /// Gets whether the range is inverted.
    ///
    /// See [`set_inverted()`][Self::set_inverted()].
    ///
    /// # Returns
    ///
    /// [`true`] if the range is inverted
    #[doc(alias = "gtk_range_get_inverted")]
    #[doc(alias = "get_inverted")]
    fn is_inverted(&self) -> bool;

    /// This function returns the area that contains the range’s trough,
    /// in coordinates relative to @self's origin.
    ///
    /// This function is useful mainly for [`Range`][crate::Range] subclasses.
    ///
    /// # Returns
    ///
    ///
    /// ## `range_rect`
    /// return location for the range rectangle
    #[doc(alias = "gtk_range_get_range_rect")]
    #[doc(alias = "get_range_rect")]
    fn range_rect(&self) -> gdk::Rectangle;

    /// Gets whether the range is restricted to the fill level.
    ///
    /// # Returns
    ///
    /// [`true`] if @self is restricted to the fill level.
    #[doc(alias = "gtk_range_get_restrict_to_fill_level")]
    #[doc(alias = "get_restrict_to_fill_level")]
    fn restricts_to_fill_level(&self) -> bool;

    /// Gets the number of digits to round the value to when
    /// it changes.
    ///
    /// See `signal::Range::change-value`.
    ///
    /// # Returns
    ///
    /// the number of digits to round to
    #[doc(alias = "gtk_range_get_round_digits")]
    #[doc(alias = "get_round_digits")]
    fn round_digits(&self) -> i32;

    /// Gets whether the range displays the fill level graphically.
    ///
    /// # Returns
    ///
    /// [`true`] if @self shows the fill level.
    #[doc(alias = "gtk_range_get_show_fill_level")]
    #[doc(alias = "get_show_fill_level")]
    fn shows_fill_level(&self) -> bool;

    /// This function returns sliders range along the long dimension,
    /// in widget->window coordinates.
    ///
    /// This function is useful mainly for [`Range`][crate::Range] subclasses.
    ///
    /// # Returns
    ///
    ///
    /// ## `slider_start`
    /// return location for the slider's start
    ///
    /// ## `slider_end`
    /// return location for the slider's end
    #[doc(alias = "gtk_range_get_slider_range")]
    #[doc(alias = "get_slider_range")]
    fn slider_range(&self) -> (i32, i32);

    /// This function is useful mainly for [`Range`][crate::Range] subclasses.
    ///
    /// See [`set_slider_size_fixed()`][Self::set_slider_size_fixed()].
    ///
    /// # Returns
    ///
    /// whether the range’s slider has a fixed size.
    #[doc(alias = "gtk_range_get_slider_size_fixed")]
    #[doc(alias = "get_slider_size_fixed")]
    fn is_slider_size_fixed(&self) -> bool;

    /// Gets the current value of the range.
    ///
    /// # Returns
    ///
    /// current value of the range.
    #[doc(alias = "gtk_range_get_value")]
    #[doc(alias = "get_value")]
    fn value(&self) -> f64;

    /// Sets the adjustment to be used as the “model” object for the [`Range`][crate::Range]
    ///
    /// The adjustment indicates the current range value, the minimum and
    /// maximum range values, the step/page increments used for keybindings
    /// and scrolling, and the page size.
    ///
    /// The page size is normally 0 for [`Scale`][crate::Scale] and nonzero for [`Scrollbar`][crate::Scrollbar],
    /// and indicates the size of the visible area of the widget being scrolled.
    /// The page size affects the size of the scrollbar slider.
    /// ## `adjustment`
    /// a [`Adjustment`][crate::Adjustment]
    #[doc(alias = "gtk_range_set_adjustment")]
    fn set_adjustment(&self, adjustment: &impl IsA<Adjustment>);

    /// Set the new position of the fill level indicator.
    ///
    /// The “fill level” is probably best described by its most prominent
    /// use case, which is an indicator for the amount of pre-buffering in
    /// a streaming media player. In that use case, the value of the range
    /// would indicate the current play position, and the fill level would
    /// be the position up to which the file/stream has been downloaded.
    ///
    /// This amount of prebuffering can be displayed on the range’s trough
    /// and is themeable separately from the trough. To enable fill level
    /// display, use [`set_show_fill_level()`][Self::set_show_fill_level()]. The range defaults
    /// to not showing the fill level.
    ///
    /// Additionally, it’s possible to restrict the range’s slider position
    /// to values which are smaller than the fill level. This is controlled
    /// by [`set_restrict_to_fill_level()`][Self::set_restrict_to_fill_level()] and is by default
    /// enabled.
    /// ## `fill_level`
    /// the new position of the fill level indicator
    #[doc(alias = "gtk_range_set_fill_level")]
    fn set_fill_level(&self, fill_level: f64);

    /// Sets whether the [`Range`][crate::Range] respects text direction.
    ///
    /// If a range is flippable, it will switch its direction
    /// if it is horizontal and its direction is [`TextDirection::Rtl`][crate::TextDirection::Rtl].
    ///
    /// See [`WidgetExt::direction()`][crate::prelude::WidgetExt::direction()].
    /// ## `flippable`
    /// [`true`] to make the range flippable
    #[doc(alias = "gtk_range_set_flippable")]
    fn set_flippable(&self, flippable: bool);

    /// Sets the step and page sizes for the range.
    ///
    /// The step size is used when the user clicks the [`Scrollbar`][crate::Scrollbar]
    /// arrows or moves a [`Scale`][crate::Scale] via arrow keys. The page size
    /// is used for example when moving via Page Up or Page Down keys.
    /// ## `step`
    /// step size
    /// ## `page`
    /// page size
    #[doc(alias = "gtk_range_set_increments")]
    fn set_increments(&self, step: f64, page: f64);

    /// Sets whether to invert the range.
    ///
    /// Ranges normally move from lower to higher values as the
    /// slider moves from top to bottom or left to right. Inverted
    /// ranges have higher values at the top or on the right rather
    /// than on the bottom or left.
    /// ## `setting`
    /// [`true`] to invert the range
    #[doc(alias = "gtk_range_set_inverted")]
    fn set_inverted(&self, setting: bool);

    /// Sets the allowable values in the [`Range`][crate::Range].
    ///
    /// The range value is clamped to be between @min and @max.
    /// (If the range has a non-zero page size, it is clamped
    /// between @min and @max - page-size.)
    /// ## `min`
    /// minimum range value
    /// ## `max`
    /// maximum range value
    #[doc(alias = "gtk_range_set_range")]
    fn set_range(&self, min: f64, max: f64);

    /// Sets whether the slider is restricted to the fill level.
    ///
    /// See [`set_fill_level()`][Self::set_fill_level()] for a general description
    /// of the fill level concept.
    /// ## `restrict_to_fill_level`
    /// Whether the fill level restricts slider movement.
    #[doc(alias = "gtk_range_set_restrict_to_fill_level")]
    fn set_restrict_to_fill_level(&self, restrict_to_fill_level: bool);

    /// Sets the number of digits to round the value to when
    /// it changes.
    ///
    /// See `signal::Range::change-value`.
    /// ## `round_digits`
    /// the precision in digits, or -1
    #[doc(alias = "gtk_range_set_round_digits")]
    fn set_round_digits(&self, round_digits: i32);

    /// Sets whether a graphical fill level is show on the trough.
    ///
    /// See [`set_fill_level()`][Self::set_fill_level()] for a general description
    /// of the fill level concept.
    /// ## `show_fill_level`
    /// Whether a fill level indicator graphics is shown.
    #[doc(alias = "gtk_range_set_show_fill_level")]
    fn set_show_fill_level(&self, show_fill_level: bool);

    /// Sets whether the range’s slider has a fixed size, or a size that
    /// depends on its adjustment’s page size.
    ///
    /// This function is useful mainly for [`Range`][crate::Range] subclasses.
    /// ## `size_fixed`
    /// [`true`] to make the slider size constant
    #[doc(alias = "gtk_range_set_slider_size_fixed")]
    fn set_slider_size_fixed(&self, size_fixed: bool);

    /// Sets the current value of the range.
    ///
    /// If the value is outside the minimum or maximum range values,
    /// it will be clamped to fit inside them. The range emits the
    /// `signal::Range::value-changed` signal if the value changes.
    /// ## `value`
    /// new value of the range
    #[doc(alias = "gtk_range_set_value")]
    fn set_value(&self, value: f64);

    /// Emitted before clamping a value, to give the application a
    /// chance to adjust the bounds.
    /// ## `value`
    /// the value before we clamp
    #[doc(alias = "adjust-bounds")]
    fn connect_adjust_bounds<F: Fn(&Self, f64) + 'static>(&self, f: F) -> SignalHandlerId;

    /// Emitted when a scroll action is performed on a range.
    ///
    /// It allows an application to determine the type of scroll event
    /// that occurred and the resultant new value. The application can
    /// handle the event itself and return [`true`] to prevent further
    /// processing. Or, by returning [`false`], it can pass the event to
    /// other handlers until the default GTK handler is reached.
    ///
    /// The value parameter is unrounded. An application that overrides
    /// the ::change-value signal is responsible for clamping the value
    /// to the desired number of decimal digits; the default GTK
    /// handler clamps the value based on `property::Range::round-digits`.
    /// ## `scroll`
    /// the type of scroll action that was performed
    /// ## `value`
    /// the new value resulting from the scroll action
    ///
    /// # Returns
    ///
    /// [`true`] to prevent other handlers from being invoked for
    ///     the signal, [`false`] to propagate the signal further
    #[doc(alias = "change-value")]
    fn connect_change_value<F: Fn(&Self, ScrollType, f64) -> glib::signal::Inhibit + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId;

    /// Virtual function that moves the slider.
    ///
    /// Used for keybindings.
    /// ## `step`
    /// how to move the slider
    #[doc(alias = "move-slider")]
    fn connect_move_slider<F: Fn(&Self, ScrollType) + 'static>(&self, f: F) -> SignalHandlerId;

    fn emit_move_slider(&self, step: ScrollType);

    /// Emitted when the range value changes.
    #[doc(alias = "value-changed")]
    fn connect_value_changed<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId;

    #[doc(alias = "adjustment")]
    fn connect_adjustment_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId;

    #[doc(alias = "fill-level")]
    fn connect_fill_level_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId;

    #[doc(alias = "inverted")]
    fn connect_inverted_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId;

    #[doc(alias = "restrict-to-fill-level")]
    fn connect_restrict_to_fill_level_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId;

    #[doc(alias = "round-digits")]
    fn connect_round_digits_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId;

    #[doc(alias = "show-fill-level")]
    fn connect_show_fill_level_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId;
}

impl<O: IsA<Range>> RangeExt for O {
    fn adjustment(&self) -> Adjustment {
        unsafe {
            from_glib_none(ffi::gtk_range_get_adjustment(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    fn fill_level(&self) -> f64 {
        unsafe { ffi::gtk_range_get_fill_level(self.as_ref().to_glib_none().0) }
    }

    fn is_flippable(&self) -> bool {
        unsafe { from_glib(ffi::gtk_range_get_flippable(self.as_ref().to_glib_none().0)) }
    }

    fn is_inverted(&self) -> bool {
        unsafe { from_glib(ffi::gtk_range_get_inverted(self.as_ref().to_glib_none().0)) }
    }

    fn range_rect(&self) -> gdk::Rectangle {
        unsafe {
            let mut range_rect = gdk::Rectangle::uninitialized();
            ffi::gtk_range_get_range_rect(
                self.as_ref().to_glib_none().0,
                range_rect.to_glib_none_mut().0,
            );
            range_rect
        }
    }

    fn restricts_to_fill_level(&self) -> bool {
        unsafe {
            from_glib(ffi::gtk_range_get_restrict_to_fill_level(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    fn round_digits(&self) -> i32 {
        unsafe { ffi::gtk_range_get_round_digits(self.as_ref().to_glib_none().0) }
    }

    fn shows_fill_level(&self) -> bool {
        unsafe {
            from_glib(ffi::gtk_range_get_show_fill_level(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    fn slider_range(&self) -> (i32, i32) {
        unsafe {
            let mut slider_start = mem::MaybeUninit::uninit();
            let mut slider_end = mem::MaybeUninit::uninit();
            ffi::gtk_range_get_slider_range(
                self.as_ref().to_glib_none().0,
                slider_start.as_mut_ptr(),
                slider_end.as_mut_ptr(),
            );
            (slider_start.assume_init(), slider_end.assume_init())
        }
    }

    fn is_slider_size_fixed(&self) -> bool {
        unsafe {
            from_glib(ffi::gtk_range_get_slider_size_fixed(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    fn value(&self) -> f64 {
        unsafe { ffi::gtk_range_get_value(self.as_ref().to_glib_none().0) }
    }

    fn set_adjustment(&self, adjustment: &impl IsA<Adjustment>) {
        unsafe {
            ffi::gtk_range_set_adjustment(
                self.as_ref().to_glib_none().0,
                adjustment.as_ref().to_glib_none().0,
            );
        }
    }

    fn set_fill_level(&self, fill_level: f64) {
        unsafe {
            ffi::gtk_range_set_fill_level(self.as_ref().to_glib_none().0, fill_level);
        }
    }

    fn set_flippable(&self, flippable: bool) {
        unsafe {
            ffi::gtk_range_set_flippable(self.as_ref().to_glib_none().0, flippable.into_glib());
        }
    }

    fn set_increments(&self, step: f64, page: f64) {
        unsafe {
            ffi::gtk_range_set_increments(self.as_ref().to_glib_none().0, step, page);
        }
    }

    fn set_inverted(&self, setting: bool) {
        unsafe {
            ffi::gtk_range_set_inverted(self.as_ref().to_glib_none().0, setting.into_glib());
        }
    }

    fn set_range(&self, min: f64, max: f64) {
        unsafe {
            ffi::gtk_range_set_range(self.as_ref().to_glib_none().0, min, max);
        }
    }

    fn set_restrict_to_fill_level(&self, restrict_to_fill_level: bool) {
        unsafe {
            ffi::gtk_range_set_restrict_to_fill_level(
                self.as_ref().to_glib_none().0,
                restrict_to_fill_level.into_glib(),
            );
        }
    }

    fn set_round_digits(&self, round_digits: i32) {
        unsafe {
            ffi::gtk_range_set_round_digits(self.as_ref().to_glib_none().0, round_digits);
        }
    }

    fn set_show_fill_level(&self, show_fill_level: bool) {
        unsafe {
            ffi::gtk_range_set_show_fill_level(
                self.as_ref().to_glib_none().0,
                show_fill_level.into_glib(),
            );
        }
    }

    fn set_slider_size_fixed(&self, size_fixed: bool) {
        unsafe {
            ffi::gtk_range_set_slider_size_fixed(
                self.as_ref().to_glib_none().0,
                size_fixed.into_glib(),
            );
        }
    }

    fn set_value(&self, value: f64) {
        unsafe {
            ffi::gtk_range_set_value(self.as_ref().to_glib_none().0, value);
        }
    }

    fn connect_adjust_bounds<F: Fn(&Self, f64) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn adjust_bounds_trampoline<P: IsA<Range>, F: Fn(&P, f64) + 'static>(
            this: *mut ffi::GtkRange,
            value: libc::c_double,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(Range::from_glib_borrow(this).unsafe_cast_ref(), value)
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"adjust-bounds\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    adjust_bounds_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn connect_change_value<F: Fn(&Self, ScrollType, f64) -> glib::signal::Inhibit + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn change_value_trampoline<
            P: IsA<Range>,
            F: Fn(&P, ScrollType, f64) -> glib::signal::Inhibit + 'static,
        >(
            this: *mut ffi::GtkRange,
            scroll: ffi::GtkScrollType,
            value: libc::c_double,
            f: glib::ffi::gpointer,
        ) -> glib::ffi::gboolean {
            let f: &F = &*(f as *const F);
            f(
                Range::from_glib_borrow(this).unsafe_cast_ref(),
                from_glib(scroll),
                value,
            )
            .into_glib()
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"change-value\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    change_value_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn connect_move_slider<F: Fn(&Self, ScrollType) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn move_slider_trampoline<
            P: IsA<Range>,
            F: Fn(&P, ScrollType) + 'static,
        >(
            this: *mut ffi::GtkRange,
            step: ffi::GtkScrollType,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(
                Range::from_glib_borrow(this).unsafe_cast_ref(),
                from_glib(step),
            )
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"move-slider\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    move_slider_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn emit_move_slider(&self, step: ScrollType) {
        self.emit_by_name::<()>("move-slider", &[&step]);
    }

    fn connect_value_changed<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn value_changed_trampoline<P: IsA<Range>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkRange,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(Range::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"value-changed\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    value_changed_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn connect_adjustment_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_adjustment_trampoline<P: IsA<Range>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkRange,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(Range::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::adjustment\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_adjustment_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn connect_fill_level_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_fill_level_trampoline<P: IsA<Range>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkRange,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(Range::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::fill-level\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_fill_level_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn connect_inverted_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_inverted_trampoline<P: IsA<Range>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkRange,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(Range::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::inverted\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_inverted_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn connect_restrict_to_fill_level_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn notify_restrict_to_fill_level_trampoline<
            P: IsA<Range>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkRange,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(Range::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::restrict-to-fill-level\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_restrict_to_fill_level_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn connect_round_digits_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_round_digits_trampoline<P: IsA<Range>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkRange,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(Range::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::round-digits\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_round_digits_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn connect_show_fill_level_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_show_fill_level_trampoline<
            P: IsA<Range>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkRange,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(Range::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::show-fill-level\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_show_fill_level_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }
}

impl fmt::Display for Range {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        f.write_str("Range")
    }
}