src/apps/terminal/TermViewHighlight.h

   1 /*
   2  * Copyright 2013, Ingo Weinhold, ingo_weinhold@gmx.de.
   3  * Distributed under the terms of the MIT License.
   4  */
   5 #ifndef TERMVIEW_HIGHLIGHT_H
   6 #define TERMVIEW_HIGHLIGHT_H
   7
   8
   9 #include <GraphicsDefs.h>
  10
  11 #include "TermPos.h"
  12
  13
  14 class TermViewHighlighter {
  15 public:
  16         virtual                                         ~TermViewHighlighter();
  17
  18         virtual rgb_color                       ForegroundColor() = 0;
  19         virtual rgb_color                       BackgroundColor() = 0;
  20         virtual uint32                          AdjustTextAttributes(uint32 attributes);
  21 };
  22
  23
  24 class TermViewHighlight {
  25 public:
  26         TermViewHighlight()
  27                 :
  28                 fHighlighter(NULL),
  29                 fStart(-1, -1),
  30                 fEnd(-1, -1)
  31         {
  32         }
  33
  34         TermViewHighlighter* Highlighter() const
  35         {
  36                 return fHighlighter;
  37         }
  38
  39         void SetHighlighter(TermViewHighlighter* highligher)
  40         {
  41                 fHighlighter = highligher;
  42         }
  43
  44         const TermPos& Start() const
  45         {
  46                 return fStart;
  47         }
  48
  49         const TermPos& End() const
  50         {
  51                 return fEnd;
  52         }
  53
  54         bool IsEmpty() const
  55         {
  56                 return fStart == fEnd;
  57         }
  58
  59         bool RangeContains(const TermPos& pos) const
  60         {
  61                 return pos >= fStart && pos < fEnd;
  62         }
  63
  64         void SetRange(const TermPos& start, const TermPos& end)
  65         {
  66                 fStart = start;
  67                 fEnd = end;
  68         }
  69
  70         void ScrollRange(int32 byLines)
  71         {
  72                 fStart.y -= byLines;
  73                 fEnd.y -= byLines;
  74         }
  75
  76 private:
  77         TermViewHighlighter*    fHighlighter;
  78         TermPos                                 fStart;
  79         TermPos                                 fEnd;
  80 };
  81
  82
  83 #endif // TERMVIEW_HIGHLIGHT_H