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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 3 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, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef GRAPHICS_THUMBNAIL_H
#define GRAPHICS_THUMBNAIL_H
#include "common/scummsys.h"
namespace Common{
class SeekableReadStream;
class WriteStream;
}
namespace Graphics {
/**
* @defgroup graphics_thumbnail Thumbnails
* @ingroup graphics
*
* @brief API for managing screen thumbnails used for save games.
*
* @{
*/
struct Surface;
/**
* Checks for presence of the thumbnail save header.
* Seeks automatically back to start position after check.
*
* @param in stream to check for header
*/
bool checkThumbnailHeader(Common::SeekableReadStream &in);
/**
* Skips a thumbnail, if present.
*
* @param in stream to process
*/
bool skipThumbnail(Common::SeekableReadStream &in);
/**
* Loads a thumbnail from the given input stream.
*/
bool loadThumbnail(Common::SeekableReadStream &in, Graphics::Surface *&thumbnail, bool skipThumbnail = false);
/**
* Creates a thumbnail from screen contents.
*/
bool createThumbnail(Graphics::Surface &thumb);
/**
* Saves a thumbnail to the given write stream.
* Automatically creates a thumbnail from screen contents.
*/
bool saveThumbnail(Common::WriteStream &out);
/**
* Saves a (given) thumbnail to the given write stream.
*/
bool saveThumbnail(Common::WriteStream &out, const Graphics::Surface &thumb);
/**
* Grabs framebuffer into surface
*
* @param surf a surface
* @return false if a error occurred
*/
bool createScreenShot(Graphics::Surface &surf);
/**
* Scales a passed surface, creating a new surface with the result
* @param srcImage Source image to scale
* @param xSize New surface width
* @param ySize New surface height
* @remarks Caller is responsible for freeing the returned surface
*/
Graphics::Surface *scale(const Graphics::Surface &srcImage, int xSize, int ySize);
/** @} */
} // End of namespace Graphics
#endif
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