// Copyright (C) 2022 RozK
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

#ifndef _RK_ENGINE_EVENTS_H
#define _RK_ENGINE_EVENTS_H

#include "types.hpp"
#include "display.hpp"

typedef rk_handle_t rk_events_t;

enum rk_event_type : rk_uint {
    RK_EVENT_FOCUS_IN = 0,
    RK_EVENT_FOCUS_OUT = 1,
    RK_EVENT_KEY_PRESS = 2,
    RK_EVENT_KEY_RELEASE = 3,
    RK_EVENT_BUTTON_PRESS = 4,
    RK_EVENT_BUTTON_RELEASE = 5,
    RK_EVENT_MOTION = 6
};

struct rk_event_key {
    rk_uint code;
    rk_uint symbol;
    rk_wchar character;
};

struct rk_event_button {
    rk_uint index;
};

struct rk_event_motion {
    rk_int x;
    rk_int y;
};

struct rk_event {
    rk_event_type type;
    union {
        rk_event_key key;
        rk_event_button button;
        rk_event_motion motion;
    };
};

RK_EXPORT rk_events_t rk_create_events(
    rk_display_t display);

RK_EXPORT void rk_destroy_events(
    rk_display_t display,
    rk_events_t events);

RK_EXPORT void rk_set_key_autorepeat(
    rk_events_t events,
    rk_bool autorepeat);

RK_EXPORT void rk_set_motion_acceleration(
    rk_events_t events,
    rk_uint numerator,
    rk_uint denominator,
    rk_uint threshold);

RK_EXPORT rk_uint rk_consume_events(
    rk_events_t events,
    rk_event * buffer,
    rk_uint max_events);

#endif // _RK_ENGINE_EVENTS_H