diff options
Diffstat (limited to 'include/pdf/SkPDFFont.h')
| -rw-r--r-- | include/pdf/SkPDFFont.h | 202 |
1 files changed, 0 insertions, 202 deletions
diff --git a/include/pdf/SkPDFFont.h b/include/pdf/SkPDFFont.h deleted file mode 100644 index 2ebdec73da..0000000000 --- a/include/pdf/SkPDFFont.h +++ /dev/null @@ -1,202 +0,0 @@ - -/* - * Copyright 2011 Google Inc. - * - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - - -#ifndef SkPDFFont_DEFINED -#define SkPDFFont_DEFINED - -#include "SkAdvancedTypefaceMetrics.h" -#include "SkBitSet.h" -#include "SkPDFTypes.h" -#include "SkTDArray.h" -#include "SkThread.h" -#include "SkTypeface.h" - -class SkPaint; -class SkPDFCatalog; -class SkPDFFont; - -class SkPDFGlyphSet : public SkNoncopyable { -public: - SkPDFGlyphSet(); - - void set(const uint16_t* glyphIDs, int numGlyphs); - bool has(uint16_t glyphID) const; - void merge(const SkPDFGlyphSet& usage); - void exportTo(SkTDArray<uint32_t>* glyphIDs) const; - -private: - SkBitSet fBitSet; -}; - -class SkPDFGlyphSetMap : public SkNoncopyable { -public: - struct FontGlyphSetPair { - FontGlyphSetPair(SkPDFFont* font, SkPDFGlyphSet* glyphSet); - - SkPDFFont* fFont; - SkPDFGlyphSet* fGlyphSet; - }; - - SkPDFGlyphSetMap(); - ~SkPDFGlyphSetMap(); - - class F2BIter { - public: - explicit F2BIter(const SkPDFGlyphSetMap& map); - FontGlyphSetPair* next() const; - void reset(const SkPDFGlyphSetMap& map); - - private: - const SkTDArray<FontGlyphSetPair>* fMap; - mutable int fIndex; - }; - - void merge(const SkPDFGlyphSetMap& usage); - void reset(); - - void noteGlyphUsage(SkPDFFont* font, const uint16_t* glyphIDs, - int numGlyphs); - -private: - SkPDFGlyphSet* getGlyphSetForFont(SkPDFFont* font); - - SkTDArray<FontGlyphSetPair> fMap; -}; - - -/** \class SkPDFFont - A PDF Object class representing a font. The font may have resources - attached to it in order to embed the font. SkPDFFonts are canonicalized - so that resource deduplication will only include one copy of a font. - This class uses the same pattern as SkPDFGraphicState, a static weak - reference to each instantiated class. -*/ -class SkPDFFont : public SkPDFDict { -public: - SK_API virtual ~SkPDFFont(); - - SK_API virtual void getResources(SkTDArray<SkPDFObject*>* resourceList); - - /** Returns the typeface represented by this class. Returns NULL for the - * default typeface. - */ - SK_API SkTypeface* typeface(); - - /** Returns the font type represented in this font. For Type0 fonts, - * returns the type of the decendant font. - */ - SK_API virtual SkAdvancedTypefaceMetrics::FontType getType(); - - /** Returns true if this font encoding supports glyph IDs above 255. - */ - SK_API virtual bool multiByteGlyphs() const = 0; - - /** Return true if this font has an encoding for the passed glyph id. - */ - SK_API bool hasGlyph(uint16_t glyphID); - - /** Convert (in place) the input glyph IDs into the font encoding. If the - * font has more glyphs than can be encoded (like a type 1 font with more - * than 255 glyphs) this method only converts up to the first out of range - * glyph ID. - * @param glyphIDs The input text as glyph IDs. - * @param numGlyphs The number of input glyphs. - * @return Returns the number of glyphs consumed. - */ - SK_API size_t glyphsToPDFFontEncoding(uint16_t* glyphIDs, size_t numGlyphs); - - /** Get the font resource for the passed typeface and glyphID. The - * reference count of the object is incremented and it is the caller's - * responsibility to unreference it when done. This is needed to - * accommodate the weak reference pattern used when the returned object - * is new and has no other references. - * @param typeface The typeface to find. - * @param glyphID Specify which section of a large font is of interest. - */ - SK_API static SkPDFFont* GetFontResource(SkTypeface* typeface, - uint16_t glyphID); - - /** Subset the font based on usage set. Returns a SkPDFFont instance with - * subset. - * @param usage Glyph subset requested. - * @return NULL if font does not support subsetting, a new instance - * of SkPDFFont otherwise. - */ - SK_API virtual SkPDFFont* getFontSubset(const SkPDFGlyphSet* usage); - -protected: - // Common constructor to handle common members. - SkPDFFont(SkAdvancedTypefaceMetrics* fontInfo, SkTypeface* typeface, - uint16_t glyphID, bool descendantFont); - - // Accessors for subclass. - SkAdvancedTypefaceMetrics* fontInfo(); - void setFontInfo(SkAdvancedTypefaceMetrics* info); - uint16_t firstGlyphID() const; - uint16_t lastGlyphID() const; - void setLastGlyphID(uint16_t glyphID); - - // Add object to resource list. - void addResource(SkPDFObject* object); - - // Accessors for FontDescriptor associated with this object. - SkPDFDict* getFontDescriptor(); - void setFontDescriptor(SkPDFDict* descriptor); - - // Add common entries to FontDescriptor. - bool addCommonFontDescriptorEntries(int16_t defaultWidth); - - /** Set fFirstGlyphID and fLastGlyphID to span at most 255 glyphs, - * including the passed glyphID. - */ - void adjustGlyphRangeForSingleByteEncoding(int16_t glyphID); - - // Generate ToUnicode table according to glyph usage subset. - // If subset is NULL, all available glyph ids will be used. - void populateToUnicodeTable(const SkPDFGlyphSet* subset); - - // Create instances of derived types based on fontInfo. - static SkPDFFont* Create(SkAdvancedTypefaceMetrics* fontInfo, - SkTypeface* typeface, uint16_t glyphID, - SkPDFDict* fontDescriptor); - - static bool Find(uint32_t fontID, uint16_t glyphID, int* index); - -private: - class FontRec { - public: - SkPDFFont* fFont; - uint32_t fFontID; - uint16_t fGlyphID; - - // A fGlyphID of 0 with no fFont always matches. - bool operator==(const FontRec& b) const; - FontRec(SkPDFFont* font, uint32_t fontID, uint16_t fGlyphID); - }; - - SkRefPtr<SkTypeface> fTypeface; - - // The glyph IDs accessible with this font. For Type1 (non CID) fonts, - // this will be a subset if the font has more than 255 glyphs. - uint16_t fFirstGlyphID; - uint16_t fLastGlyphID; - // The font info is only kept around after construction for large - // Type1 (non CID) fonts that need multiple "fonts" to access all glyphs. - SkRefPtr<SkAdvancedTypefaceMetrics> fFontInfo; - SkTDArray<SkPDFObject*> fResources; - SkRefPtr<SkPDFDict> fDescriptor; - - SkAdvancedTypefaceMetrics::FontType fFontType; - - // This should be made a hash table if performance is a problem. - static SkTDArray<FontRec>& CanonicalFonts(); - static SkBaseMutex& CanonicalFontsMutex(); -}; - -#endif |