/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * 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 General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * $URL$
 * $Id$
 *
 */

/*
 * OpenPandora: Device Specific Event Handling.
 *
 */

#include "backends/platform/openpandora/op-sdl.h"

bool OSystem_OP::handleMouseButtonDown(SDL_Event &ev, Common::Event &event) {
	if (ev.button.button == SDL_BUTTON_LEFT){
		SDLMod mod=SDL_GetModState();
		if (mod & KMOD_RCTRL) /* KMOD_RCTRL = Right Trigger */
			event.type = Common::EVENT_RBUTTONDOWN;
		else if ( mod & KMOD_RSHIFT) /* KMOD_RSHIFT = Left Trigger */
			event.type = Common::EVENT_MOUSEMOVE;
		else
			event.type = Common::EVENT_LBUTTONDOWN;
	}
	else if (ev.button.button == SDL_BUTTON_RIGHT)
		event.type = Common::EVENT_RBUTTONDOWN;
#if defined(SDL_BUTTON_WHEELUP) && defined(SDL_BUTTON_WHEELDOWN)
	else if (ev.button.button == SDL_BUTTON_WHEELUP)
		event.type = Common::EVENT_WHEELUP;
	else if (ev.button.button == SDL_BUTTON_WHEELDOWN)
		event.type = Common::EVENT_WHEELDOWN;
#endif
#if defined(SDL_BUTTON_MIDDLE)
	else if (ev.button.button == SDL_BUTTON_MIDDLE)
		event.type = Common::EVENT_MBUTTONDOWN;
#endif
	else
		return false;

	// People can use the touchscreen so may have no mouse motion events between taps.
	// Not sure if this fixes anything ;).
	// setMousePos(event.mouse.x, event.mouse.y);

	fillMouseEvent(event, ev.button.x, ev.button.y);

	return true;
}

bool OSystem_OP::handleMouseButtonUp(SDL_Event &ev, Common::Event &event) {
	if (ev.button.button == SDL_BUTTON_LEFT){
		SDLMod mod=SDL_GetModState();
		if (mod & KMOD_RCTRL) /* KMOD_RCTRL = Right Trigger */
			event.type = Common::EVENT_RBUTTONUP;
		else if ( mod & KMOD_RSHIFT) /* KMOD_RSHIFT = Left Trigger */
			event.type = Common::EVENT_MOUSEMOVE;
		else
			event.type = Common::EVENT_LBUTTONUP;
	}
	else if (ev.button.button == SDL_BUTTON_RIGHT)
		event.type = Common::EVENT_RBUTTONUP;
#if defined(SDL_BUTTON_MIDDLE)
	else if (ev.button.button == SDL_BUTTON_MIDDLE)
		event.type = Common::EVENT_MBUTTONUP;
#endif
	else
		return false;

	fillMouseEvent(event, ev.button.x, ev.button.y);

	return true;
}


bool OSystem_OP::handleMouseMotion(SDL_Event &ev, Common::Event &event) {
	event.type = Common::EVENT_MOUSEMOVE;
	fillMouseEvent(event, ev.motion.x, ev.motion.y);

	setMousePos(event.mouse.x, event.mouse.y);
	return true;
}

void OSystem_OP::warpMouse(int x, int y) {
	if (_mouseCurState.x != x || _mouseCurState.y != y) {
		SDL_WarpMouse(x, y);

		// SDL_WarpMouse() generates a mouse movement event, so
		// set_mouse_pos() would be called eventually. However, the
		// cannon script in CoMI calls this function twice each time
		// the cannon is reloaded. Unless we update the mouse position
		// immediately the second call is ignored, causing the cannon
		// to change its aim.

		setMousePos(x, y);
	}
}

void OSystem_OP::handleKbdMouse() {
	uint32 curTime = getMillis();
	if (curTime >= _km.last_time + _km.delay_time) {
		_km.last_time = curTime;
		if (_km.x_down_count == 1) {
			_km.x_down_time = curTime;
			_km.x_down_count = 2;
		}
		if (_km.y_down_count == 1) {
			_km.y_down_time = curTime;
			_km.y_down_count = 2;
		}

		if (_km.x_vel || _km.y_vel) {
			if (_km.x_down_count) {
				if (curTime > _km.x_down_time + _km.delay_time * 12) {
					if (_km.x_vel > 0)
						_km.x_vel++;
					else
						_km.x_vel--;
				} else if (curTime > _km.x_down_time + _km.delay_time * 8) {
					if (_km.x_vel > 0)
						_km.x_vel = 5;
					else
						_km.x_vel = -5;
				}
			}
			if (_km.y_down_count) {
				if (curTime > _km.y_down_time + _km.delay_time * 12) {
					if (_km.y_vel > 0)
						_km.y_vel++;
					else
						_km.y_vel--;
				} else if (curTime > _km.y_down_time + _km.delay_time * 8) {
					if (_km.y_vel > 0)
						_km.y_vel = 5;
					else
						_km.y_vel = -5;
				}
			}

			_km.x += _km.x_vel;
			_km.y += _km.y_vel;

			if (_km.x < 0) {
				_km.x = 0;
				_km.x_vel = -1;
				_km.x_down_count = 1;
			} else if (_km.x > _km.x_max) {
				_km.x = _km.x_max;
				_km.x_vel = 1;
				_km.x_down_count = 1;
			}

			if (_km.y < 0) {
				_km.y = 0;
				_km.y_vel = -1;
				_km.y_down_count = 1;
			} else if (_km.y > _km.y_max) {
				_km.y = _km.y_max;
				_km.y_vel = 1;
				_km.y_down_count = 1;
			}

			warpMouse((Uint16)_km.x, (Uint16)_km.y);
		}
	}
}