icuSources/test/letest/SimpleFontInstance.h

   1 // © 2016 and later: Unicode, Inc. and others.
   2 // License & terms of use: http://www.unicode.org/copyright.html
   3 /*
   4  *******************************************************************************
   5  *
   6  *   Copyright (C) 1999-2015, International Business Machines
   7  *   Corporation and others.  All Rights Reserved.
   8  *
   9  *******************************************************************************
  10  *   file name:  SimpleFontInstance.h
  11  *
  12  *   created on: 03/30/2006
  13  *   created by: Eric R. Mader
  14  */
  15
  16 #ifndef __SIMPLEFONTINSTANCE_H
  17 #define __SIMPLEFONTINSTANCE_H
  18
  19 #include "layout/LETypes.h"
  20 #include "layout/LEFontInstance.h"
  21
  22 U_NAMESPACE_USE
  23
  24 class SimpleFontInstance : public LEFontInstance
  25 {
  26 private:
  27     float     fPointSize;
  28     le_int32  fAscent;
  29     le_int32  fDescent;
  30
  31 protected:
  32     const void *readFontTable(LETag tableTag) const;
  33
  34 public:
  35     SimpleFontInstance(float pointSize, LEErrorCode &status);
  36
  37     virtual ~SimpleFontInstance();
  38
  39     virtual const void *getFontTable(LETag tableTag, size_t &length) const;
  40
  41     virtual le_int32 getUnitsPerEM() const;
  42
  43     virtual le_int32 getAscent() const;
  44
  45     virtual le_int32 getDescent() const;
  46
  47     virtual le_int32 getLeading() const;
  48
  49     // We really want to inherit this method from the superclass, but some compilers
  50     // issue a warning if we don't implement it...
  51     virtual LEGlyphID mapCharToGlyph(LEUnicode32 ch, const LECharMapper *mapper, le_bool filterZeroWidth) const;
  52
  53     // We really want to inherit this method from the superclass, but some compilers
  54     // issue a warning if we don't implement it...
  55     virtual LEGlyphID mapCharToGlyph(LEUnicode32 ch, const LECharMapper *mapper) const;
  56
  57     virtual LEGlyphID mapCharToGlyph(LEUnicode32 ch) const;
  58
  59     virtual void getGlyphAdvance(LEGlyphID glyph, LEPoint &advance) const;
  60
  61     virtual le_bool getGlyphPoint(LEGlyphID glyph, le_int32 pointNumber, LEPoint &point) const;
  62
  63     float getXPixelsPerEm() const;
  64
  65     float getYPixelsPerEm() const;
  66
  67     float getScaleFactorX() const;
  68
  69     float getScaleFactorY() const;
  70
  71 };
  72
  73 #endif