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// Take a look at the license at the top of the repository in the LICENSE file.

use crate::EventType;
use glib::translate::*;
use std::fmt;

glib::wrapper! {
    /// An event related to a touch-based device.
    #[doc(alias = "GdkTouchEvent")]
    pub struct TouchEvent(Shared<ffi::GdkTouchEvent>);

    match fn {
        ref => |ptr| ffi::gdk_event_ref(ptr as *mut ffi::GdkEvent),
        unref => |ptr| ffi::gdk_event_unref(ptr as *mut ffi::GdkEvent),
    }
}

define_event! {
    TouchEvent,
    ffi::GdkTouchEvent,
    ffi::gdk_touch_event_get_type,
    &[EventType::TouchBegin, EventType::TouchUpdate, EventType::TouchEnd, EventType::TouchCancel]
}

impl TouchEvent {
    /// Extracts whether a touch event is emulating a pointer event.
    ///
    /// # Returns
    ///
    /// [`true`] if `self` is emulating
    #[doc(alias = "gdk_touch_event_get_emulating_pointer")]
    #[doc(alias = "get_emulating_pointer")]
    pub fn is_emulating_pointer(&self) -> bool {
        unsafe {
            from_glib(ffi::gdk_touch_event_get_emulating_pointer(
                self.to_glib_none().0,
            ))
        }
    }
}

impl fmt::Display for TouchEvent {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        f.debug_struct("TouchEvent")
            .field("is_emulating_pointer", &self.is_emulating_pointer())
            .finish()
    }
}