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/**
* @file llfontbitmapcache.h
* @brief Storage for previously rendered glyphs.
*
* $LicenseInfo:firstyear=2008&license=viewergpl$
*
* Copyright (c) 2008-2009, Linden Research, Inc.
*
* Second Life Viewer Source Code
* The source code in this file ("Source Code") is provided by Linden Lab
* to you under the terms of the GNU General Public License, version 2.0
* ("GPL"), unless you have obtained a separate licensing agreement
* ("Other License"), formally executed by you and Linden Lab. Terms of
* the GPL can be found in doc/GPL-license.txt in this distribution, or
* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
*
* There are special exceptions to the terms and conditions of the GPL as
* it is applied to this Source Code. View the full text of the exception
* in the file doc/FLOSS-exception.txt in this software distribution, or
* online at
* http://secondlifegrid.net/programs/open_source/licensing/flossexception
*
* By copying, modifying or distributing this software, you acknowledge
* that you have read and understood your obligations described above,
* and agree to abide by those obligations.
*
* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
* COMPLETENESS OR PERFORMANCE.
* $/LicenseInfo$
*/
#ifndef LL_LLFONTBITMAPCACHE_H
#define LL_LLFONTBITMAPCACHE_H
#include <vector>
// Maintain a collection of bitmaps containing rendered glyphs.
// Generalizes the single-bitmap logic from LLFontFreetype and LLFontGL.
class LLFontBitmapCache: public LLRefCount
{
public:
LLFontBitmapCache();
~LLFontBitmapCache();
// Need to call this once, before caching any glyphs.
void init(S32 num_components,
S32 max_char_width,
S32 max_char_height);
void reset();
BOOL nextOpenPos(S32 width, S32 &posX, S32 &posY, S32 &bitmapNum);
void destroyGL();
LLImageRaw *getImageRaw(U32 bitmapNum = 0) const;
LLImageGL *getImageGL(U32 bitmapNum = 0) const;
S32 getMaxCharWidth() const { return mMaxCharWidth; }
S32 getNumComponents() const { return mNumComponents; }
S32 getBitmapWidth() const { return mBitmapWidth; }
S32 getBitmapHeight() const { return mBitmapHeight; }
private:
S32 mNumComponents;
S32 mBitmapWidth;
S32 mBitmapHeight;
S32 mBitmapNum;
S32 mMaxCharWidth;
S32 mMaxCharHeight;
S32 mCurrentOffsetX;
S32 mCurrentOffsetY;
S32 mCurrentBitmapNum;
std::vector<LLPointer<LLImageRaw> > mImageRawVec;
std::vector<LLPointer<LLImageGL> > mImageGLVec;
};
#endif //LL_LLFONTBITMAPCACHE_H
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