242e02c388
X-SVN-Rev: 39583
123 lines
3.4 KiB
C++
123 lines
3.4 KiB
C++
// © 2016 and later: Unicode, Inc. and others.
|
|
// License & terms of use: http://www.unicode.org/copyright.html
|
|
|
|
/*
|
|
*******************************************************************************
|
|
*
|
|
* Copyright (C) 1999-2015, 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 { size_t ignored; return readFontTable(tableTag, ignored); }
|
|
const void *readFontTable(LETag tableTag, size_t &length) const;
|
|
|
|
public:
|
|
PortableFontInstance(const char *fileName, float pointSize, LEErrorCode &status);
|
|
|
|
virtual ~PortableFontInstance();
|
|
|
|
virtual const void *getFontTable(LETag tableTag, size_t &length) 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_uint32 getRawChecksum() 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
|