// SPDX-FileCopyrightText: 2023 The wlroots contributors
// SPDX-FileCopyrightText: 2025 KylinSoft Co., Ltd.
//
// SPDX-License-Identifier: Expat

#include <assert.h>

#include "libinput_p.h"
#include "util/time.h"

const struct wlr_touch_impl libinput_touch_impl = {
    .name = "libinput-touch",
};

void init_device_touch(struct libinput_input_device *dev)
{
    const char *name = libinput_device_get_name(dev->handle);
    struct wlr_touch *wlr_touch = &dev->touch;
    wlr_touch_init(wlr_touch, &libinput_touch_impl, name);

    libinput_device_get_size(dev->handle, &wlr_touch->width_mm, &wlr_touch->height_mm);
}

struct libinput_input_device *device_from_touch(struct wlr_touch *wlr_touch)
{
    assert(wlr_touch->impl == &libinput_touch_impl);
    struct libinput_input_device *dev = wl_container_of(wlr_touch, dev, touch);
    return dev;
}

void handle_touch_down(struct libinput_event *event, struct wlr_touch *touch)
{
    struct libinput_event_touch *tevent = libinput_event_get_touch_event(event);
    struct wlr_touch_down_event wlr_event = { 0 };
    wlr_event.touch = touch;
    wlr_event.time_msec = usec_to_msec(libinput_event_touch_get_time_usec(tevent));
    wlr_event.touch_id = libinput_event_touch_get_seat_slot(tevent);
    wlr_event.x = libinput_event_touch_get_x_transformed(tevent, 1);
    wlr_event.y = libinput_event_touch_get_y_transformed(tevent, 1);
    wl_signal_emit_mutable(&touch->events.down, &wlr_event);
}

void handle_touch_up(struct libinput_event *event, struct wlr_touch *touch)
{
    struct libinput_event_touch *tevent = libinput_event_get_touch_event(event);
    struct wlr_touch_up_event wlr_event = {
        .touch = touch,
        .time_msec = usec_to_msec(libinput_event_touch_get_time_usec(tevent)),
        .touch_id = libinput_event_touch_get_seat_slot(tevent),
    };
    wl_signal_emit_mutable(&touch->events.up, &wlr_event);
}

void handle_touch_motion(struct libinput_event *event, struct wlr_touch *touch)
{
    struct libinput_event_touch *tevent = libinput_event_get_touch_event(event);
    struct wlr_touch_motion_event wlr_event = {
        .touch = touch,
        .time_msec = usec_to_msec(libinput_event_touch_get_time_usec(tevent)),
        .touch_id = libinput_event_touch_get_seat_slot(tevent),
        .x = libinput_event_touch_get_x_transformed(tevent, 1),
        .y = libinput_event_touch_get_y_transformed(tevent, 1),
    };
    wl_signal_emit_mutable(&touch->events.motion, &wlr_event);
}

void handle_touch_cancel(struct libinput_event *event, struct wlr_touch *touch)
{
    struct libinput_event_touch *tevent = libinput_event_get_touch_event(event);
    struct wlr_touch_cancel_event wlr_event = {
        .touch = touch,
        .time_msec = usec_to_msec(libinput_event_touch_get_time_usec(tevent)),
        .touch_id = libinput_event_touch_get_seat_slot(tevent),
    };
    wl_signal_emit_mutable(&touch->events.cancel, &wlr_event);
}

void handle_touch_frame(struct libinput_event *event, struct wlr_touch *touch)
{
    wl_signal_emit_mutable(&touch->events.frame, NULL);
}
