/* 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.
 *
 */

#include "backends/platform/sdl/sdl-sys.h"
#include "PanelKeyboard.h"

namespace CEGUI {

const char KEYBOARD_MAPPING_ALPHA[][14] = { {"abcdefghijklm"}, {"nopqrstuvwxyz"} };
const char KEYBOARD_MAPPING_NUMERIC[][6] = { {"12345"}, {"67890"} };
const int  KEYBOARD_MAPPING_SPECIAL[][3][2] = { { {1, SDLK_ESCAPE}, {224, SDLK_UP}, {32, SDLK_SPACE} },
	{ {224, SDLK_LEFT}, {224, SDLK_DOWN}, {224, SDLK_RIGHT} }
};

PanelKeyboard::PanelKeyboard(WORD reference) : Toolbar() {
	setBackground(reference);
	_state = false;
	_lastKey.setKey(0);
}


PanelKeyboard::~PanelKeyboard() {
}

bool PanelKeyboard::action(int x, int y, bool pushed) {
	Key key;

	if (checkInside(x, y)) {
		int keyAscii = 0;
		int keyCode = 0;
		if (x < 185) {
			// Alpha selection
			keyCode = keyAscii = KEYBOARD_MAPPING_ALPHA[y >= _y + 20][((x + 10) / 14) - 1];
		} else if (x >= 186 && x <= 255) {
			// Numeric selection
			keyCode = keyAscii = KEYBOARD_MAPPING_NUMERIC[y >= _y + 20][((x - 187 + 10) / 14) - 1];
		} else if (x >= 258 && x <= 300) {
			// Special keys
			keyAscii = KEYBOARD_MAPPING_SPECIAL[y >= _y + 20][((x - 259 + 10) / 14) - 1][0];
			keyCode = KEYBOARD_MAPPING_SPECIAL[y >= _y + 20][((x - 259 + 10) / 14) - 1][1];
		} else if (x >= 302 && x <= 316) {
			if (y < _y + 20) {
				// Backspace
				keyAscii = VK_BACK;
				keyCode = keyAscii;
			} else {
				// Enter
				keyAscii = 13;
				keyCode = 13;
			}
		}

		if (keyAscii != 0) {
			if (_state && pushed && keyCode != _lastKey.keycode()) // if cursor is still down and off the current key
				return false;
			else if (_state && !pushed && keyCode != _lastKey.keycode()) { // cursor is up but off the current key
				keyAscii = _lastKey.ascii();
				keyCode = _lastKey.keycode();
			}
			_state = pushed;
			_lastKey.setKey(keyAscii, tolower(keyCode));

			key.setKey(keyAscii, tolower(keyCode));
			return EventsBuffer::simulateKey(&key, pushed);
		} else if (_state && !pushed) { // cursor is in some forbidden region and is up
			_state = false;
			key = _lastKey;
			return EventsBuffer::simulateKey(&key, false);
		} else
			return false;
	} else if (_state && !pushed) { // cursor left the keyboard area and is up
		_state = false;
		key = _lastKey;
		return EventsBuffer::simulateKey(&key, false);
	} else
		return false;
}

} // End of namespace CEGUI