src/rowpainter.h

   1 // -*- C++ -*-
   2 /**
   3  * \file rowpainter.h
   4  * This file is part of LyX, the document processor.
   5  * Licence details can be found in the file COPYING.
   6  *
   7  * \author various
   8  * \author John Levon
   9  * \author André Pönitz
  10  *
  11  * Full author contact details are available in file CREDITS.
  12  */
  13
  14 #ifndef ROWPAINTER_H
  15 #define ROWPAINTER_H
  16
  17 #include "Changes.h"
  18
  19 #include "support/types.h"
  20
  21 namespace lyx {
  22
  23 class Bidi;
  24 class BufferView;
  25 class Font;
  26 class FontInfo;
  27 class Inset;
  28 class Language;
  29 class PainterInfo;
  30 class Paragraph;
  31 class ParagraphList;
  32 class ParagraphMetrics;
  33 class Row;
  34 class Text;
  35 class TextMetrics;
  36
  37 namespace frontend { class Painter; }
  38
  39 /**
  40  * A class used for painting an individual row of text.
  41  * FIXME: get rid of that class.
  42  */
  43 class RowPainter {
  44 public:
  45         /// initialise and run painter
  46         RowPainter(PainterInfo & pi, Text const & text,
  47                 pit_type pit, Row const & row, Bidi & bidi, int x, int y);
  48
  49         /// paint various parts
  50         /// FIXME: transfer to TextMetrics
  51         void paintAppendix();
  52         void paintDepthBar();
  53         void paintChangeBar();
  54         void paintFirst();
  55         void paintLast();
  56         void paintText();
  57         void paintOnlyInsets();
  58
  59 private:
  60         void paintForeignMark(double orig_x, Language const * lang, int desc = 0);
  61         void paintHebrewComposeChar(pos_type & vpos, FontInfo const & font);
  62         void paintArabicComposeChar(pos_type & vpos, FontInfo const & font);
  63         void paintChars(pos_type & vpos, FontInfo const & font,
  64                         bool hebrew, bool arabic);
  65         int paintAppendixStart(int y);
  66         void paintFromPos(pos_type & vpos);
  67         void paintInset(Inset const * inset, pos_type const pos);
  68         void paintInlineCompletion(Font const & font);
  69
  70         /// return left margin
  71         int leftMargin() const;
  72
  73         /// return the label font for this row
  74         FontInfo labelFont() const;
  75
  76         /// contains painting related information.
  77         PainterInfo & pi_;
  78
  79         /// Text for the row
  80         Text const & text_;
  81         TextMetrics & text_metrics_;
  82         ParagraphList const & pars_;
  83
  84         /// The row to paint
  85         Row const & row_;
  86
  87         /// Row's paragraph
  88         pit_type const pit_;
  89         Paragraph const & par_;
  90         ParagraphMetrics const & pm_;
  91
  92         /// bidi cache, comes from outside the rowpainter because
  93         /// rowpainters are normally created in a for loop and there only
  94         /// one of them is active at a time.
  95         Bidi & bidi_;
  96
  97         /// row changed? (change tracking)
  98         Change const change_;
  99
 100         // Looks ugly - is
 101         double const xo_;
 102         int const yo_;    // current baseline
 103         double x_;
 104         int width_;
 105 };
 106
 107 } // namespace lyx
 108
 109 #endif // ROWPAINTER_H