icuSources/samples/layout/paragraph.h

   1 /*
   2  *******************************************************************************
   3  *
   4  *   © 2016 and later: Unicode, Inc. and others.
   5  *   License & terms of use: http://www.unicode.org/copyright.html#License
   6  *
   7  *******************************************************************************
   8  *******************************************************************************
   9  *
  10  *   Copyright (C) 1999-2007, International Business Machines
  11  *   Corporation and others.  All Rights Reserved.
  12  *
  13  *******************************************************************************
  14  *   file name:  Paragraph.h
  15  *
  16  *   created on: 09/06/2000
  17  *   created by: Eric R. Mader
  18  */
  19 #ifndef __PARAGRAPH_H
  20 #define __PARAGRAPH_H
  21
  22 #include "unicode/utypes.h"
  23 #include "unicode/ubidi.h"
  24
  25 #include "layout/LEFontInstance.h"
  26 #include "layout/ParagraphLayout.h"
  27
  28 #include "GUISupport.h"
  29 #include "RenderingSurface.h"
  30
  31 U_NAMESPACE_USE
  32
  33 #define MARGIN 10
  34
  35 #if 0
  36 class LineInfo;
  37 #endif
  38
  39 class Paragraph
  40 {
  41 public:
  42     Paragraph(const LEUnicode chars[], le_int32 charCount, const FontRuns *fontRuns, LEErrorCode &status);
  43
  44     ~Paragraph();
  45
  46     le_int32 getAscent();
  47     le_int32 getLineHeight();
  48     le_int32 getLineCount();
  49     void breakLines(le_int32 width, le_int32 height);
  50     void draw(RenderingSurface *surface, le_int32 firstLine, le_int32 lastLine);
  51
  52     static Paragraph *paragraphFactory(const char *fileName, const LEFontInstance *font, GUISupport *guiSupport);
  53
  54 private:
  55     void addLine(const ParagraphLayout::Line *line);
  56
  57     ParagraphLayout **fParagraphLayout;
  58
  59     le_int32          fParagraphCount;
  60     le_int32          fParagraphMax;
  61     le_int32          fParagraphGrow;
  62
  63     le_int32          fLineCount;
  64     le_int32          fLinesMax;
  65     le_int32          fLinesGrow;
  66
  67     const ParagraphLayout::Line **fLines;
  68           LEUnicode *fChars;
  69
  70     le_int32         fLineHeight;
  71     le_int32         fAscent;
  72     le_int32         fWidth;
  73     le_int32         fHeight;
  74     UBiDiLevel       fParagraphLevel;
  75 };
  76
  77 inline le_int32 Paragraph::getLineHeight()
  78 {
  79     return fLineHeight;
  80 }
  81
  82 inline le_int32 Paragraph::getLineCount()
  83 {
  84     return fLineCount;
  85 }
  86
  87 inline le_int32 Paragraph::getAscent()
  88 {
  89     return fAscent;
  90 }
  91
  92 #endif
  93
  94