scuffed-code/icu4c/source/test/letest/PortableFontInstance.h

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/*
*******************************************************************************
*
* Copyright (C) 1999-2001, 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:
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FILE *fFile;
float fPointSize;
le_int32 fUnitsPerEM;
le_int32 fAscent;
le_int32 fDescent;
le_int32 fLeading;
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const SFNTDirectory *fDirectory;
le_uint16 fDirPower;
le_uint16 fDirExtra;
float fDeviceScaleX;
float fDeviceScaleY;
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CMAPMapper *fCMAPMapper;
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const HMTXTable *fHMTXTable;
le_uint16 fNumGlyphs;
le_uint16 fNumLongHorMetrics;
static le_int8 highBit(le_int32 value);
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const DirectoryEntry *findTable(LETag tag) const;
const void *readTable(LETag tag, le_uint32 *length) const;
void deleteTable(const void *table) const;
void getMetrics();
CMAPMapper *findUnicodeMapper();
protected:
const void *readFontTable(LETag tableTag) const;
public:
PortableFontInstance(char *fileName, float pointSize, LEErrorCode &status);
virtual ~PortableFontInstance();
virtual const void *getFontTable(LETag tableTag) const;
virtual le_int32 getUnitsPerEM() const
{
return fUnitsPerEM;
};
virtual le_int32 getAscent() const
{
return fAscent;
}
virtual le_int32 getDescent() const
{
return fDescent;
}
virtual le_int32 getLeading() const
{
return fLeading;
}
virtual LEGlyphID mapCharToGlyph(LEUnicode32 ch) const
{
return fCMAPMapper->unicodeToGlyph(ch);
}
virtual void getGlyphAdvance(LEGlyphID glyph, LEPoint &advance) const;
virtual le_bool getGlyphPoint(LEGlyphID glyph, le_int32 pointNumber, LEPoint &point) const;
float getXPixelsPerEm() const
{
return fPointSize;
};
float getYPixelsPerEm() const
{
return fPointSize;
};
float getScaleFactorX() const
{
return 1.0;
}
float getScaleFactorY() const
{
return 1.0;
}
};
#endif