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/* ScummVM - Scumm Interpreter
* Copyright (C) 2006 The ScummVM project
*
* 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.
*
* $URL$
* $Id$
*/
#ifndef GRAPHICS_CURSORMAN_H
#define GRAPHICS_CURSORMAN_H
#include "common/stdafx.h"
#include "common/scummsys.h"
#include "common/stack.h"
#include "common/singleton.h"
namespace Graphics {
class CursorManager : public Common::Singleton<CursorManager> {
public:
bool isVisible();
bool showMouse(bool visible);
/**
* Push a new cursor onto the stack, and set it in the backend. A local
* copy will be made of the cursor data, so the original buffer can be
* safely freed afterwards.
*
* @param buf the new cursor data
* @param w the width
* @param h the height
* @param hotspotX the hotspot X coordinate
* @param hotspotY the hotspot Y coordinate
* @param keycolor the index for the transparent color
* @param targetScale the scale for which the cursor is designed
*
* @note It is ok for the buffer to be a NULL pointer. It is sometimes
* useful to push a "dummy" cursor and modify it later. The
* cursor will be added to the stack, but not to the backend.
*/
void pushCursor(const byte *buf, uint w, uint h, int hotspotX, int hotspotY, byte keycolor = 255, int targetScale = 1);
/**
* Pop a cursor from the stack, and restore the previous one to the
* backend. If there is no previous cursor, the cursor is hidden.
*/
void popCursor();
/**
* Replace the current cursor on the stack. If the stack is empty, the
* cursor is pushed instead. It's a slightly more optimized way of
* popping the old cursor before pushing the new one.
*
* @param buf the new cursor data
* @param w the width
* @param h the height
* @param hotspotX the hotspot X coordinate
* @param hotspotY the hotspot Y coordinate
* @param keycolor the index for the transparent color
* @param targetScale the scale for which the cursor is designed
*/
void replaceCursor(const byte *buf, uint w, uint h, int hotspotX, int hotspotY, byte keycolor = 255, int targetScale = 1);
private:
friend class Common::Singleton<SingletonBaseType>;
CursorManager();
struct Cursor {
byte *_data;
bool _visible;
uint _width;
uint _height;
int _hotspotX;
int _hotspotY;
byte _keycolor;
byte _targetScale;
uint _size;
Cursor(const byte *data, uint w, uint h, int hotspotX, int hotspotY, byte keycolor = 255, int targetScale = 1) {
_size = w * h;
_data = new byte[_size];
if (data && _data)
memcpy(_data, data, _size);
_width = w;
_height = h;
_hotspotX = hotspotX;
_hotspotY = hotspotY;
_keycolor = keycolor;
_targetScale = targetScale;
}
~Cursor() {
delete [] _data;
}
};
Common::Stack<Cursor *> _cursorStack;
};
} // End of namespace Graphics
/** Shortcut for accessing the cursor manager. */
#define CursorMan (::Graphics::CursorManager::instance())
#endif
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