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/* 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.
 *
 * $URL$
 * $Id$
 *
 */

#include "common/util.h"

#include "sci/sci.h"
#include "sci/engine/kernel.h"
#include "sci/engine/state.h"
#include "sci/engine/selector.h"
#include "sci/graphics/coordadjuster.h"
#include "sci/graphics/ports.h"
#include "sci/graphics/screen.h"

namespace Sci {

GfxCoordAdjuster::GfxCoordAdjuster() {
}

GfxCoordAdjuster16::GfxCoordAdjuster16(GfxPorts *ports)
	: _ports(ports) {
}

GfxCoordAdjuster16::~GfxCoordAdjuster16() {
}

void GfxCoordAdjuster16::kernelGlobalToLocal(int16 &x, int16 &y, reg_t planeObject) {
	Port *curPort = _ports->getPort();
	x -= curPort->left;
	y -= curPort->top;
}

void GfxCoordAdjuster16::kernelLocalToGlobal(int16 &x, int16 &y, reg_t planeObject) {
	Port *curPort = _ports->getPort();
	x += curPort->left;
	y += curPort->top;
}

Common::Rect GfxCoordAdjuster16::onControl(Common::Rect rect) {
	Port *oldPort = _ports->setPort((Port *)_ports->_picWind);
	Common::Rect adjustedRect(rect.left, rect.top, rect.right, rect.bottom);

	adjustedRect.clip(_ports->getPort()->rect);
	_ports->offsetRect(adjustedRect);
	_ports->setPort(oldPort);
	return adjustedRect;
}

void GfxCoordAdjuster16::setCursorPos(Common::Point &pos) {
	pos.y += _ports->getPort()->top;
	pos.x += _ports->getPort()->left;
}

void GfxCoordAdjuster16::moveCursor(Common::Point &pos) {
	pos.y += _ports->_picWind->rect.top;
	pos.x += _ports->_picWind->rect.left;

	pos.y = CLIP<int16>(pos.y, _ports->_picWind->rect.top, _ports->_picWind->rect.bottom - 1);
	pos.x = CLIP<int16>(pos.x, _ports->_picWind->rect.left, _ports->_picWind->rect.right - 1);
}

Common::Rect GfxCoordAdjuster16::pictureGetDisplayArea() {
	Common::Rect displayArea(_ports->getPort()->rect.right, _ports->getPort()->rect.bottom);
	displayArea.moveTo(_ports->getPort()->left, _ports->getPort()->top);
	return displayArea;
}

#ifdef ENABLE_SCI32
GfxCoordAdjuster32::GfxCoordAdjuster32(SegManager *segMan)
	: _segMan(segMan) {
}

GfxCoordAdjuster32::~GfxCoordAdjuster32() {
}

void GfxCoordAdjuster32::kernelGlobalToLocal(int16 &x, int16 &y, reg_t planeObject) {
	EngineState *s = g_sci->getEngineState();
	uint16 planeResY = readSelectorValue(s->_segMan, planeObject, SELECTOR(resY));
	uint16 planeResX = readSelectorValue(s->_segMan, planeObject, SELECTOR(resX));
	uint16 planeTop = readSelectorValue(s->_segMan, planeObject, SELECTOR(top));
	uint16 planeLeft = readSelectorValue(s->_segMan, planeObject, SELECTOR(left));

	y = ((y * planeResY) / g_sci->_gfxScreen->getHeight());
	x = ((x * planeResX) / g_sci->_gfxScreen->getWidth());

	y -= planeTop;
	x -= planeLeft;
}
void GfxCoordAdjuster32::kernelLocalToGlobal(int16 &x, int16 &y, reg_t planeObject) {
	EngineState *s = g_sci->getEngineState();
	uint16 planeResY = readSelectorValue(s->_segMan, planeObject, SELECTOR(resY));
	uint16 planeResX = readSelectorValue(s->_segMan, planeObject, SELECTOR(resX));
	uint16 planeTop = readSelectorValue(s->_segMan, planeObject, SELECTOR(top));
	uint16 planeLeft = readSelectorValue(s->_segMan, planeObject, SELECTOR(left));

	x += planeLeft;
	y += planeTop;

	y = ((y * g_sci->_gfxScreen->getHeight()) / planeResY);
	x = ((x * g_sci->_gfxScreen->getWidth()) / planeResX);
}

Common::Rect GfxCoordAdjuster32::onControl(Common::Rect rect) {
	Common::Rect adjustedRect = rect;
	adjustedRect.translate(0, 10);
	return adjustedRect;
}

void GfxCoordAdjuster32::pictureSetDisplayArea(Common::Rect displayArea) {
	_pictureDisplayArea = displayArea;
}

Common::Rect GfxCoordAdjuster32::pictureGetDisplayArea() {
	return _pictureDisplayArea;
}
#endif

} // End of namespace Sci