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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.
*
*/

#include "common/scummsys.h"

#include "common/str.h"
#include "common/file.h"

#include "zvision/cursor.h"


namespace ZVision {

ZorkCursor::ZorkCursor() 
	: _width(0),
	  _height(0),
	  _hotspotX(0),
	  _hotspotY(0),
	  _surface(0) {
}

ZorkCursor::ZorkCursor(const Common::String &fileName) 
		: _width(0),
		  _height(0),
		  _hotspotX(0),
		  _hotspotY(0),
		  _surface(0) {
	Common::File file;
	if (!file.open(fileName))
		return;

	uint32 magic = file.readUint32BE();
	if (magic != MKTAG('Z', 'C', 'R', '1')) {
		warning("%s is not a Zork Cursor file", fileName.c_str());
		return;
	}

	_hotspotX = file.readUint16LE();
	_hotspotY = file.readUint16LE();
	_width = file.readUint16LE();
	_height = file.readUint16LE();

	uint dataSize = _width * _height * 2;
	_surface = new byte[dataSize];
	uint32 bytesRead = file.read(_surface, dataSize);
	assert(bytesRead == dataSize);
}

ZorkCursor::ZorkCursor(const ZorkCursor &other) {
	_width = other._width;
	_height = other._height;
	_hotspotX = other._hotspotX;
	_hotspotY = other._hotspotY;

	uint dataSize = _width * _height * 2;
	_surface = new byte[dataSize];

	memcpy(_surface, other._surface, dataSize);
}

ZorkCursor &ZorkCursor::operator=(const ZorkCursor &other) {
	_width = other._width;
	_height = other._height;
	_hotspotX = other._hotspotX;
	_hotspotY = other._hotspotY;

	uint dataSize = _width * _height * 2;
	_surface = new byte[dataSize];

	memcpy(_surface, other._surface, dataSize);

	return *this;
}

ZorkCursor::~ZorkCursor() {
	if (_surface != 0) {
		delete[] _surface;
	}
}

} // End of namespace ZVision