touch.c.v

// Copyright(C) 2021 Lars Pontoppidan. All rights reserved.
// Use of this source code is governed by an MIT license
// that can be found in the LICENSE file.
module sdl

//
// SDL_touch.h
//

// `typedef Sint64 SDL_TouchID;`
pub type TouchID = i64

// `typedef Sint64 SDL_FingerID;`
pub type FingerID = i64

pub const touch_mouseid = C.SDL_TOUCH_MOUSEID

@[typedef]
pub struct C.SDL_Finger {
pub:
	id       FingerID // C.SDL_FingerID
	x        f32
	y        f32
	pressure f32
}

pub type Finger = C.SDL_Finger

fn C.SDL_GetNumTouchDevices() int

// get_num_touch_devices gets the number of registered touch devices.
pub fn get_num_touch_devices() int {
	return C.SDL_GetNumTouchDevices()
}

fn C.SDL_GetTouchDevice(index int) TouchID

// C.SDL_TouchID

// get_touch_device gets the touch ID with the given index, or 0 if the index is invalid.
pub fn get_touch_device(index int) TouchID {
	return C.SDL_GetTouchDevice(index)
}

fn C.SDL_GetNumTouchFingers(touch_id TouchID) int

// get_num_touch_fingers gets the number of active fingers for a given touch device.
pub fn get_num_touch_fingers(touch_id TouchID) int {
	return C.SDL_GetNumTouchFingers(touch_id)
}

fn C.SDL_GetTouchFinger(touch_id TouchID, index int) &C.SDL_Finger

// get_touch_finger gets the finger object of the given touch, with the given index.
pub fn get_touch_finger(touch_id TouchID, index int) &Finger {
	return C.SDL_GetTouchFinger(touch_id, index)
}