gtk/auto/

gesture_stylus.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::{EventController, Gesture, GestureSingle, Widget, ffi};
use glib::{
    object::ObjectType as _,
    prelude::*,
    signal::{SignalHandlerId, connect_raw},
    translate::*,
};
use std::boxed::Box as Box_;

glib::wrapper! {
    /// [`GestureStylus`][crate::GestureStylus] is a [`Gesture`][crate::Gesture] implementation specific to stylus
    /// input. The provided signals just provide the basic information
    ///
    /// ## Signals
    ///
    ///
    /// #### `down`
    ///
    ///
    ///
    /// #### `motion`
    ///
    ///
    ///
    /// #### `proximity`
    ///
    ///
    ///
    /// #### `up`
    ///
    /// <details><summary><h4>Gesture</h4></summary>
    ///
    ///
    /// #### `begin`
    ///  This signal is emitted when the gesture is recognized. This means the
    /// number of touch sequences matches [`n-points`][struct@crate::Gesture#n-points], and the [`check`][struct@crate::Gesture#check]
    /// handler(s) returned [`true`].
    ///
    /// Note: These conditions may also happen when an extra touch (eg. a third touch
    /// on a 2-touches gesture) is lifted, in that situation `sequence` won't pertain
    /// to the current set of active touches, so don't rely on this being true.
    ///
    ///
    ///
    ///
    /// #### `cancel`
    ///  This signal is emitted whenever a sequence is cancelled. This usually
    /// happens on active touches when [`EventControllerExt::reset()`][crate::prelude::EventControllerExt::reset()] is called
    /// on `gesture` (manually, due to grabs...), or the individual `sequence`
    /// was claimed by parent widgets' controllers (see [`GestureExt::set_sequence_state()`][crate::prelude::GestureExt::set_sequence_state()]).
    ///
    /// `gesture` must forget everything about `sequence` as a reaction to this signal.
    ///
    ///
    ///
    ///
    /// #### `end`
    ///  This signal is emitted when `gesture` either stopped recognizing the event
    /// sequences as something to be handled (the [`check`][struct@crate::Gesture#check] handler returned
    /// [`false`]), or the number of touch sequences became higher or lower than
    /// [`n-points`][struct@crate::Gesture#n-points].
    ///
    /// Note: `sequence` might not pertain to the group of sequences that were
    /// previously triggering recognition on `gesture` (ie. a just pressed touch
    /// sequence that exceeds [`n-points`][struct@crate::Gesture#n-points]). This situation may be detected
    /// by checking through [`GestureExt::handles_sequence()`][crate::prelude::GestureExt::handles_sequence()].
    ///
    ///
    ///
    ///
    /// #### `sequence-state-changed`
    ///  This signal is emitted whenever a sequence state changes. See
    /// [`GestureExt::set_sequence_state()`][crate::prelude::GestureExt::set_sequence_state()] to know more about the expectable
    /// sequence lifetimes.
    ///
    ///
    ///
    ///
    /// #### `update`
    ///  This signal is emitted whenever an event is handled while the gesture is
    /// recognized. `sequence` is guaranteed to pertain to the set of active touches.
    ///
    ///
    /// </details>
    ///
    /// # Implements
    ///
    /// [`GestureSingleExt`][trait@crate::prelude::GestureSingleExt], [`GestureExt`][trait@crate::prelude::GestureExt], [`EventControllerExt`][trait@crate::prelude::EventControllerExt], [`trait@glib::ObjectExt`], [`GestureStylusExtManual`][trait@crate::prelude::GestureStylusExtManual]
    #[doc(alias = "GtkGestureStylus")]
    pub struct GestureStylus(Object<ffi::GtkGestureStylus, ffi::GtkGestureStylusClass>) @extends GestureSingle, Gesture, EventController;

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

impl GestureStylus {
    /// Creates a new [`GestureStylus`][crate::GestureStylus].
    /// ## `widget`
    /// a [`Widget`][crate::Widget]
    ///
    /// # Returns
    ///
    /// a newly created stylus gesture
    #[doc(alias = "gtk_gesture_stylus_new")]
    pub fn new(widget: &impl IsA<Widget>) -> GestureStylus {
        skip_assert_initialized!();
        unsafe {
            Gesture::from_glib_full(ffi::gtk_gesture_stylus_new(
                widget.as_ref().to_glib_none().0,
            ))
            .unsafe_cast()
        }
    }

    /// Returns the current value for the requested `axis`. This function
    /// must be called from either the [`down`][struct@crate::GestureStylus#down],
    /// [`motion`][struct@crate::GestureStylus#motion], [`up`][struct@crate::GestureStylus#up] or [`proximity`][struct@crate::GestureStylus#proximity]
    /// signals.
    /// ## `axis`
    /// requested device axis
    ///
    /// # Returns
    ///
    /// [`true`] if there is a current value for the axis
    ///
    /// ## `value`
    /// return location for the axis value
    #[doc(alias = "gtk_gesture_stylus_get_axis")]
    #[doc(alias = "get_axis")]
    pub fn axis(&self, axis: gdk::AxisUse) -> Option<f64> {
        unsafe {
            let mut value = std::mem::MaybeUninit::uninit();
            let ret = from_glib(ffi::gtk_gesture_stylus_get_axis(
                self.to_glib_none().0,
                axis.into_glib(),
                value.as_mut_ptr(),
            ));
            if ret { Some(value.assume_init()) } else { None }
        }
    }

    /// Returns the [`gdk::DeviceTool`][crate::gdk::DeviceTool] currently driving input through this gesture.
    /// This function must be called from either the [`down`][struct@crate::GestureStylus#down],
    /// [`motion`][struct@crate::GestureStylus#motion], [`up`][struct@crate::GestureStylus#up] or [`proximity`][struct@crate::GestureStylus#proximity]
    /// signal handlers.
    ///
    /// # Returns
    ///
    /// The current stylus tool
    #[doc(alias = "gtk_gesture_stylus_get_device_tool")]
    #[doc(alias = "get_device_tool")]
    pub fn device_tool(&self) -> Option<gdk::DeviceTool> {
        unsafe {
            from_glib_none(ffi::gtk_gesture_stylus_get_device_tool(
                self.to_glib_none().0,
            ))
        }
    }

    #[doc(alias = "down")]
    pub fn connect_down<F: Fn(&Self, f64, f64) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn down_trampoline<F: Fn(&GestureStylus, f64, f64) + 'static>(
            this: *mut ffi::GtkGestureStylus,
            object: std::ffi::c_double,
            p0: std::ffi::c_double,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(&from_glib_borrow(this), object, p0)
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"down".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    down_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "motion")]
    pub fn connect_motion<F: Fn(&Self, f64, f64) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn motion_trampoline<F: Fn(&GestureStylus, f64, f64) + 'static>(
            this: *mut ffi::GtkGestureStylus,
            object: std::ffi::c_double,
            p0: std::ffi::c_double,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(&from_glib_borrow(this), object, p0)
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"motion".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    motion_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "proximity")]
    pub fn connect_proximity<F: Fn(&Self, f64, f64) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn proximity_trampoline<F: Fn(&GestureStylus, f64, f64) + 'static>(
            this: *mut ffi::GtkGestureStylus,
            object: std::ffi::c_double,
            p0: std::ffi::c_double,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(&from_glib_borrow(this), object, p0)
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"proximity".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    proximity_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "up")]
    pub fn connect_up<F: Fn(&Self, f64, f64) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn up_trampoline<F: Fn(&GestureStylus, f64, f64) + 'static>(
            this: *mut ffi::GtkGestureStylus,
            object: std::ffi::c_double,
            p0: std::ffi::c_double,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(&from_glib_borrow(this), object, p0)
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"up".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    up_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }
}