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/*
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* Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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*
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*/
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#ifndef __OPENFONTS_PRIVATE_H__
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#define __OPENFONTS_PRIVATE_H__
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#include <e32hashtab.h>
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class COpenFontShaperCacheEntry;
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/* MSB is set to indicate a glyph code rather than a unicode value
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This is used for extracting the code value */
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#define GLYPH_CODE(code) (code & 0x7fffffff)
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/** COpenFontFile owned container for extra data. May be extended without affecting Binary Compatibility.
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@internalComponent
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*/
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class TOpenFontFileData
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{
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public:
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CFontStore* iFontStore; // pointer to the CFontStore instance that loaded the COpenFontFile
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};
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/**
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@internalComponent
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*/
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class COpenFontGlyph
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{
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public:
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COpenFontGlyph(TInt aCode, TInt aGlyphIndex, const TOpenFontCharMetrics& aMetrics):
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iCode(aCode), iGlyphIndex(aGlyphIndex), iMetrics(aMetrics), iBitmapOffset(0) { }
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static COpenFontGlyph* NewL(RHeap* aHeap, TInt aCode, TInt aGlyphIndex,
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const TOpenFontCharMetrics& aMetrics, const TDesC8& aBitmap);
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static void Delete(RHeap* aHeap, COpenFontGlyph* aGlyph);
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TUint8* Bitmap() const;
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TInt iCode; // the Unicode value of the character
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TInt iGlyphIndex; // the glyph index
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TOpenFontCharMetrics iMetrics; // the metrics
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protected:
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TBool SetBitmap(RHeap* aHeap, const TDesC8& aBitmap);
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~COpenFontGlyph();
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private:
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// an offset from this COpenFontGlyph object to a pointer to the run-length-encoded bitmap,
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// calculated as (bitmapPointer)-(this)
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TInt iBitmapOffset;
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};
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/**
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Binary tree of glyphs. Each glyph can have left and right child nodes which are added
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depending on the value of their glyph code relative to the parent's glyph code.
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@internalComponent
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*/
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class COpenFontGlyphTreeEntry: public COpenFontGlyph
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{
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friend class COpenFont;
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public:
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static COpenFontGlyphTreeEntry* New(RHeap* aHeap, TInt aCode, TInt aGlyphIndex,
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const TOpenFontCharMetrics& aMetrics, const TDesC8& aBitmap);
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private:
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/** The left COpenFontGlyphTreeEntry from this entry. Represented by an offset from the
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current heap base. Use COpenFont::ThisOffsetToPointer() to convert to a valid
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COpenFontGlyphTreeEntry pointer. */
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TInt iLeftOffset;
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/** The right COpenFontGlyphTreeEntry from this entry. Represented by an offset from the
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current heap base. Use COpenFont::ThisOffsetToPointer() to convert to a valid
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COpenFontGlyphTreeEntry pointer. */
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TInt iRightOffset;
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/** Pointer to next glyph that was added to the glyph cache. This enables
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non-recursive deletion of the cache. This is only ever accessed from server
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process, so can be a direct pointer, not an offset. */
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COpenFontGlyphTreeEntry* iNext;
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private:
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COpenFontGlyphTreeEntry(TInt aCode, TInt aGlyphIndex, const TOpenFontCharMetrics& aMetrics)
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: COpenFontGlyph(aCode, aGlyphIndex, aMetrics), iLeftOffset(0), iRightOffset(0),iNext(NULL){}
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~COpenFontGlyphTreeEntry();
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};
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/**
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* Template for offset implementation of pointer to pointer
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@internalComponent
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*/
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template<class T>
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class ROffsetArray
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{
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public:
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ROffsetArray();
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TInt Create(RHeap* aHeap, TInt aCount);
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void Close(RHeap* aHeap);
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TInt Count() const;
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T* operator[](TInt aIndex) const;
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void SetAt(TInt aIndex, T* aEntry);
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private:
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TInt iOffset;
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TInt iCount;
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};
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/**
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The per-font glyph cache. For now, just the members that used to be directly in
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COpenFont. Now it is a private class it can be elaborated to do character-to-glyph-index
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mapping when that is needed.
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@internalComponent
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*/
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class COpenFontGlyphCache
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{
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public:
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COpenFontGlyphCache(): iGlyphTreeOffset(0), iGlyphCacheMemory(0),iGlyphList(NULL),iShaperCacheSentinel(NULL), iShapingInfoCacheMemory(0), iNumberOfShaperCacheEntries(0) { }
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TShapeHeader* SearchShaperCache(TInt aSessionHandle, TFontShapeFunctionParameters*& aParams);
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TShapeHeader* Insert(TInt aSessionHandle, RHeap* aHeap, CShaper::TInput aInput, TShapeHeader* aShapeHeader, TInt& aAddedBytes);
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TInt DeleteLeastRecentlyUsedEntry(RHeap* aHeap);
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TBool ShaperCacheIsEmpty();
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public:
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TInt iGlyphTreeOffset; // an offset to root of the glyph cache; a binary tree
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TInt iGlyphCacheMemory; // memory used by the glyph tree in bytes
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COpenFontGlyphTreeEntry* iGlyphList; // the glyphs, organized as a list
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COpenFontShaperCacheEntry* iShaperCacheSentinel;
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TInt iShapingInfoCacheMemory;
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TInt iNumberOfShaperCacheEntries;
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};
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/**
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@internalComponent
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*/
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class COpenFontSessionCacheEntry: public COpenFontGlyph
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{
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public:
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static COpenFontSessionCacheEntry* New(RHeap* aHeap, const COpenFont* aFont, TInt aCode, TInt aGlyphIndex,
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const TOpenFontCharMetrics& aMetrics, const TDesC8& aBitmap);
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inline const COpenFont* Font()const;
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private:
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inline COpenFontSessionCacheEntry(const COpenFont* aFont, TInt aCode, TInt aGlyphIndex, const TOpenFontCharMetrics& aMetrics);
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~COpenFontSessionCacheEntry();
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public:
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TInt iLastAccess; // serial number of the last access to the glyph
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private:
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TInt iFontOffset; // offset of the font that contains this glyph, (not owned by this class!)
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};
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/**
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A glyph cache for a particular session.
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Because session caches are not shared they can shrink as well as grow.
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@internalComponent
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*/
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class COpenFontSessionCache
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{
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public:
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static COpenFontSessionCache* NewL(RHeap* aHeap, TInt aSessionHandle, TInt aEntries);
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void Delete(RHeap* aHeap);
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TInt SessionHandle() { return iSessionHandle; }
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const COpenFontGlyph* Glyph(const COpenFont* aFont, TInt aCode, TInt& aIndex);
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void Insert(RHeap* aHeap, COpenFontSessionCacheEntry* aEntry, TInt aIndex);
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private:
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COpenFontSessionCache(TInt aSessionHandle);
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~COpenFontSessionCache();
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public:
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TInt iSessionHandle;
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TInt iLastAccess;
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ROffsetArray<COpenFontSessionCacheEntry> iEntryArray;
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};
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/**
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@internalComponent
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*/
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class COpenFontSessionCacheListItem
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{
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public:
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COpenFontSessionCacheListItem(COpenFontSessionCache* aCache);
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COpenFontSessionCacheListItem* Next();
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void SetNext(COpenFontSessionCacheListItem* aNext);
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COpenFontSessionCache* Cache();
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void Delete(RHeap* aHeap);
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private:
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~COpenFontSessionCacheListItem();
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private:
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TInt iNextOffset;
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TInt iCacheOffset;
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};
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class TFontTableGlyphOutlineCacheMemMonitor
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{
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public:
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TFontTableGlyphOutlineCacheMemMonitor();
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void Inc(TInt aBytes);
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void Dec(TInt aBytes);
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TInt GetMemUsage();
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private:
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TInt iBytes;
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};
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struct TCacheUserInfo {
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TInt iSessionHandle;
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TInt iRefCount;
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TCacheUserInfo(TInt aSessionHandle, TInt aRefCount = 0):
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iSessionHandle(aSessionHandle), iRefCount(aRefCount) { }
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};
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class CFontTableCache;
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class CFontTableCacheItem
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{
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friend class CFontTableCache ;
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public:
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CFontTableCacheItem(TUid &aFileUid, const TUint32 aTag,
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TInt aOffset, TInt aLength);
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~CFontTableCacheItem();
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TInt DecRefCount(TInt aSessionHandle);
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TInt IncRefCount(TInt aSessionHandle);
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TBool HasOutstandingRefCount();
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TInt FindUser(TInt aSessionHandle, TInt *id);
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#ifdef _DEBUG
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void SetUser(RPointerArray<TCacheUserInfo> users)
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{
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TInt len = users.Count();
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for( TInt i = 0; i < len ; i++ )
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{
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iUsers.Append(users[i]);
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}
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}
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#endif
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private:
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CFontTableCacheItem(const CFontTableCacheItem &); // disallow copy construction.
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CFontTableCacheItem& operator =(const CFontTableCacheItem &); // disallow assignment.
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TUid iFileUid;
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TUint32 iTag;
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TInt iOffset;
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TInt iLength;
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RPointerArray<TCacheUserInfo> iUsers;
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};
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class CFontTableCache
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{
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public:
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CFontTableCache(RHeap* aHeap, TFontTableGlyphOutlineCacheMemMonitor& aMon);
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~CFontTableCache();
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TInt Append(TUid aFileUid, TUint32 aTag,
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TAny*& aContent, TInt aLength);
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TInt Find(TUid aFileUid, TUint32 aTag, TAny*& aContent, TInt& aLength, TInt* id);
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TInt IncRefCount(TUid FileUid, TUint32 aTag, TInt aSessionHandle);
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TInt DecRefCount(TUid aFileUid, TUint32 aTag, TInt aSessionHandle);
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TBool HasOutstandingRefCount();
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TBool HasOutstandingRefCountWithUid(TUid aFileUid);
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void CleanupCacheOnFbsSessionTermination(TInt aSessionHandle);
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void CleanupCacheOnOpenFontFileRemoval(COpenFontFile*);
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#ifdef _DEBUG
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void SetFontItem(RPointerArray<CFontTableCacheItem> cacheItems)
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{
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TInt len = cacheItems.Count();
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for(TInt i = 0; i < len; i++)
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{
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iCacheItems.Append(cacheItems[i]);
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}
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}
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#endif
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private:
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CFontTableCache(const CFontTableCache &); // no copy construction.
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CFontTableCache& operator =(const CFontTableCache &); // no assignment.
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#ifdef _DEBUG
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TInt GetCacheState(const char *func);
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#endif
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TFontTableGlyphOutlineCacheMemMonitor &iCacheMemMon;
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RHeap *iHeap;
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RPointerArray<CFontTableCacheItem> iCacheItems;
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};
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class TUnhintedOutlineCache;
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class TUnhintedOutlineId
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{
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public:
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TUnhintedOutlineId(TUid aFileUid, TInt aFaceIndex, TUint aId);
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TUid iFileUid;
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TInt iFaceIndex;
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TUint iId;
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};
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class COutlineCacheItem {
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friend class CUnhintedOutlineCache;
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friend class CHintedOutlineCache;
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public:
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COutlineCacheItem(TInt aOffset, TInt aLength);
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~COutlineCacheItem() ;
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TInt DecRefCount(TInt aSessionHandle);
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TInt IncRefCount(TInt aSessionHandle);
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#ifdef _DEBUG
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void SetUser(RPointerArray<TCacheUserInfo> users)
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{
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TInt len = users.Count();
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for( TInt i = 0; i < len ; i++ )
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{
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iUsers.Append(users[i]);
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}
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}
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#endif
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private:
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TInt FindUser(TInt aSessionHandle, TInt *id);
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TInt iOffset;
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TInt iLength;
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RPointerArray<TCacheUserInfo> iUsers;
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};
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class CUnhintedOutlineCache {
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public:
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CUnhintedOutlineCache(RHeap* aHeap, TFontTableGlyphOutlineCacheMemMonitor& aMon);
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TInt Find(const TUnhintedOutlineId &aOutlineId, TAny*& aData, TInt& aLength);
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TInt IncRefCount(const TUnhintedOutlineId& aOutlineId, TInt aSessionHandle);
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TInt DecRefCount(const TUnhintedOutlineId& aOutlineId, TInt aSessionHandle);
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TInt CacheUnhintedOutline(const TUnhintedOutlineId& aOutlineId,
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TAny * const aData, const TInt aLength, TAny*& aOutline, TInt &aLen);
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TInt CleanupCacheOnOpenFontFileRemoval(COpenFontFile* aFontFile);
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TInt CleanupCacheOnFbsSessionTermination(TInt aSessionHandle);
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#ifdef _DEBUG
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TInt GetCacheState(const char *func);
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#endif
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~CUnhintedOutlineCache();
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#ifdef _DEBUG
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void SetUnHintedItem(TUnhintedOutlineId id, COutlineCacheItem* item)
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{
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iItemIdMap.Insert(id, item);
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}
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#endif
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private:
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// disallow assignment and copy-construction
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CUnhintedOutlineCache(const CUnhintedOutlineCache &);
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CUnhintedOutlineCache& operator =(const CUnhintedOutlineCache &);
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static TUint32 IdHash(const TUnhintedOutlineId& aOutlineId);
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static TBool IdIdentity(const TUnhintedOutlineId& id1, const TUnhintedOutlineId& id2);
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TFontTableGlyphOutlineCacheMemMonitor& iCacheMemMon;
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RHeap* iHeap;
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RHashMap<TUnhintedOutlineId, COutlineCacheItem*> iItemIdMap; // map the identity to an index in 'iCacheItems'.
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};
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class CHintedOutlineCache;
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class THintedOutlineId
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{
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public:
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THintedOutlineId(COpenFont* aFont, TUint aId);
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COpenFont *iFont;
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TUint iId;
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};
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class CHintedOutlineCache {
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public:
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CHintedOutlineCache(RHeap* aHeap, TFontTableGlyphOutlineCacheMemMonitor& aMon);
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TInt Find(const THintedOutlineId& aOutlineId, TAny*& aData, TInt& aLength);
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TInt IncRefCount(const THintedOutlineId& aOutlineId, TInt aSessionHandle);
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TInt DecRefCount(const THintedOutlineId& aOutlineId, TInt aSessionHandle);
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TInt CacheHintedOutline(const THintedOutlineId& aOutlineId,
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TAny* aData, TInt aLength, TAny*& aOutline, TInt& aLen);
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TInt CleanupCacheOnOpenFontRemoval(COpenFont* aFont);
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TInt CleanupCacheOnFbsSessionTermination(TInt aSessionHandle);
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409 |
#ifdef _DEBUG
|
|
410 |
TInt GetCacheState(const char *func);
|
|
411 |
void SetHintedItem(THintedOutlineId id, COutlineCacheItem* item)
|
|
412 |
{
|
|
413 |
iItemIdMap.Insert(id, item);
|
|
414 |
}
|
|
415 |
RHashMap<THintedOutlineId, COutlineCacheItem*> GetHintedMap()
|
|
416 |
{
|
|
417 |
return iItemIdMap;
|
|
418 |
}
|
|
419 |
#endif
|
|
420 |
|
|
421 |
private:
|
|
422 |
// disallow assignment and copy-construction
|
|
423 |
CHintedOutlineCache(const CHintedOutlineCache &);
|
|
424 |
CHintedOutlineCache& operator =(const CHintedOutlineCache &);
|
|
425 |
static TUint32 IdHash(const THintedOutlineId& aOutlineId);
|
|
426 |
static TBool IdIdentity(const THintedOutlineId& id1, const THintedOutlineId& id2);
|
|
427 |
|
|
428 |
TFontTableGlyphOutlineCacheMemMonitor& iCacheMemMon;
|
|
429 |
RHeap* iHeap;
|
|
430 |
RHashMap<THintedOutlineId, COutlineCacheItem*> iItemIdMap; // map the identity to an index in 'iCacheItems'.
|
|
431 |
};
|
|
432 |
|
|
433 |
|
|
434 |
// inline functions
|
|
435 |
inline COpenFontSessionCacheEntry::COpenFontSessionCacheEntry(const COpenFont* aFont, TInt aCode, TInt aGlyphIndex,const TOpenFontCharMetrics& aMetrics) :
|
|
436 |
COpenFontGlyph(aCode, aGlyphIndex, aMetrics)
|
|
437 |
{
|
|
438 |
iFontOffset = aFont ? reinterpret_cast<TInt>(aFont) - reinterpret_cast<TInt>(this) : 0;
|
|
439 |
}
|
|
440 |
|
|
441 |
|
|
442 |
inline const COpenFont* COpenFontSessionCacheEntry::Font() const
|
|
443 |
{
|
|
444 |
if (iFontOffset)
|
|
445 |
{
|
|
446 |
return reinterpret_cast<const COpenFont*> (PtrAdd(this, iFontOffset));
|
|
447 |
}
|
|
448 |
else
|
|
449 |
{
|
|
450 |
return NULL;
|
|
451 |
}
|
|
452 |
}
|
|
453 |
|
|
454 |
#endif // __OPENFONTSPRIVATE_H__
|