Check in the pristine copy of ICU 4.6...

icu46/source/test/letest/PortableFontInstance.h

+
+/*
+ *******************************************************************************
+ *
+ *   Copyright (C) 1999-2008, International Business Machines
+ *   Corporation and others.  All Rights Reserved.
+ *
+ *******************************************************************************
+ *   file name:  PortableFontInstance.h
+ *
+ *   created on: 11/12/1999
+ *   created by: Eric R. Mader
+ */
+
+#ifndef __PORTABLEFONTINSTANCE_H
+#define __PORTABLEFONTINSTANCE_H
+
+#include <stdio.h>
+
+#include "layout/LETypes.h"
+#include "layout/LEFontInstance.h"
+
+#include "FontTableCache.h"
+
+#include "sfnt.h"
+#include "cmaps.h"
+
+class PortableFontInstance : public LEFontInstance, protected FontTableCache
+{
+private:
+    FILE *fFile;
+
+    float     fPointSize;
+    le_int32  fUnitsPerEM;
+    le_uint32 fFontChecksum;
+    le_int32  fAscent;
+    le_int32  fDescent;
+    le_int32  fLeading;
+
+    const SFNTDirectory *fDirectory;
+    le_uint16 fDirPower;
+    le_uint16 fDirExtra;
+
+    float fDeviceScaleX;
+    float fDeviceScaleY;
+
+    const NAMETable *fNAMETable;
+    le_uint16 fNameCount;
+    le_uint16 fNameStringOffset;
+
+    CMAPMapper *fCMAPMapper;
+
+    const HMTXTable *fHMTXTable;
+    le_uint16 fNumGlyphs;
+    le_uint16 fNumLongHorMetrics;
+
+    static le_int8 highBit(le_int32 value);
+
+    const DirectoryEntry *findTable(LETag tag) const;
+    const void *readTable(LETag tag, le_uint32 *length) const;
+    void getMetrics();
+
+    CMAPMapper *findUnicodeMapper();
+
+protected:
+    const void *readFontTable(LETag tableTag) const;
+
+public:
+    PortableFontInstance(const char *fileName, float pointSize, LEErrorCode &status);
+
+    virtual ~PortableFontInstance();
+
+    virtual const void *getFontTable(LETag tableTag) const;
+
+    virtual const char *getNameString(le_uint16 nameID, le_uint16 platform, le_uint16 encoding, le_uint16 language) const;
+
+    virtual const LEUnicode16 *getUnicodeNameString(le_uint16 nameID, le_uint16 platform, le_uint16 encoding, le_uint16 language) const;
+
+    virtual void deleteNameString(const char *name) const;
+
+    virtual void deleteNameString(const LEUnicode16 *name) const;
+
+    virtual le_int32 getUnitsPerEM() const;
+
+    virtual le_uint32 getFontChecksum() const;
+
+    virtual le_int32 getAscent() const;
+
+    virtual le_int32 getDescent() const;
+
+    virtual le_int32 getLeading() const;
+
+    // We really want to inherit this method from the superclass, but some compilers
+    // issue a warning if we don't implement it...
+    virtual LEGlyphID mapCharToGlyph(LEUnicode32 ch, const LECharMapper *mapper, le_bool filterZeroWidth) const;
+    
+    // We really want to inherit this method from the superclass, but some compilers
+    // issue a warning if we don't implement it...
+    virtual LEGlyphID mapCharToGlyph(LEUnicode32 ch, const LECharMapper *mapper) const;
+
+    virtual LEGlyphID mapCharToGlyph(LEUnicode32 ch) const;
+
+    virtual void getGlyphAdvance(LEGlyphID glyph, LEPoint &advance) const;
+
+    virtual le_bool getGlyphPoint(LEGlyphID glyph, le_int32 pointNumber, LEPoint &point) const;
+
+    float getXPixelsPerEm() const;
+
+    float getYPixelsPerEm() const;
+
+    float getScaleFactorX() const;
+
+    float getScaleFactorY() const;
+
+};
+
+#endif