src/hline.h

   1 /*
   2   Copyright (c) 2006 Paolo Capriotti <p.capriotti@gmail.com>
   3             (c) 2006 Maurizio Monge <maurizio.monge@kdemail.net>
   4
   5   This program is free software; you can redistribute it and/or modify
   6   it under the terms of the GNU General Public License as published by
   7   the Free Software Foundation; either version 2 of the License, or
   8   (at your option) any later version.
   9 */
  10
  11 #ifndef HLINE_H
  12 #define HLINE_H
  13
  14 #include <QTextCharFormat>
  15 #include <vector>
  16 #include <QString>
  17 #include <QColor>
  18
  19 class HLineExecutor {
  20 public:
  21   virtual ~HLineExecutor() { }
  22   virtual void writeChunk(const QString&) = 0;
  23   virtual void setFormat(const QTextCharFormat&) = 0;
  24 };
  25
  26 class HLine {
  27   class Region {
  28     int m_end;
  29     QTextCharFormat m_format;
  30   public:
  31     Region(int end, QTextCharFormat format)
  32     : m_end(end)
  33     , m_format(format) { }
  34
  35     int end() const { return m_end; }
  36     const QTextCharFormat& format() const { return m_format; }
  37     QTextCharFormat& format() { return m_format; }
  38
  39     void setEnd(int index) { m_end = index; }
  40     void setFormat(const QTextCharFormat& format) { m_format = format; }
  41   };
  42   struct Format {
  43     std::pair<bool, bool> m_bold;
  44     std::pair<bool, bool> m_italic;
  45     std::pair<bool, QColor> m_color;
  46     Format()
  47     : m_bold(false, false)
  48     , m_italic(false, false)
  49     , m_color(false, QColor()) { }
  50     void applyTo(QTextCharFormat& fmt) const;
  51   };
  52
  53   std::vector<Region> m_regions;
  54   QString m_text;
  55
  56   int begin(uint index) const;
  57   uint findRegion(int index) const;
  58   uint splitRegion(int index);
  59   void setFormat(int begin, int end, const Format&);
  60 public:
  61   HLine(const QString& text, const QTextCharFormat& baseFormat);
  62   HLine(const HLine& other);
  63
  64   const QTextCharFormat& getFormat(int index) const;
  65
  66   void setBold(int begin, int end, bool value);
  67   void setItalic(int begin, int end, bool value);
  68   void setColor(int begin, int end, const QColor& color);
  69   QString mid(int begin, int end) const;
  70   int length() const { return m_text.length(); }
  71   HLine* extract(int begin, int end) const;
  72   HLine* append(const HLine& other, int begin, int end) const;
  73
  74   void dump() const;
  75
  76   void run(HLineExecutor&) const;
  77 };
  78
  79 #endif // HLINE_H