src/stc/scintilla/src/ContractionState.h

   1 // Scintilla source code edit control
   2 // ContractionState.h - manages visibility of lines for folding
   3 // Copyright 1998-2000 by Neil Hodgson <neilh@scintilla.org>
   4 // The License.txt file describes the conditions under which this software may be distributed.
   5
   6 #ifndef CONTRACTIONSTATE_H
   7 #define CONTRACTIONSTATE_H
   8
   9 class OneLine {
  10 public:
  11         int displayLine;        // position within set of visible lines
  12         int docLine;            // inverse of displayLine
  13         bool visible;
  14         bool expanded;
  15
  16         OneLine();
  17         virtual ~OneLine() {}
  18 };
  19
  20 class ContractionState {
  21         void Grow(int sizeNew);
  22         enum { growSize = 4000 };
  23         int linesInDoc;
  24         int linesInDisplay;
  25         mutable OneLine *lines;
  26         int size;
  27         mutable bool valid;
  28         void MakeValid() const;
  29 public:
  30         ContractionState();
  31         virtual ~ContractionState();
  32
  33         void Clear();
  34
  35         int LinesInDoc() const;
  36         int LinesDisplayed() const;
  37         int DisplayFromDoc(int lineDoc) const;
  38         int DocFromDisplay(int lineDisplay) const;
  39
  40         void InsertLines(int lineDoc, int lineCount);
  41         void DeleteLines(int lineDoc, int lineCount);
  42
  43         bool GetVisible(int lineDoc) const;
  44         bool SetVisible(int lineDocStart, int lineDocEnd, bool visible);
  45
  46         bool GetExpanded(int lineDoc) const;
  47         bool SetExpanded(int lineDoc, bool expanded);
  48
  49     void ShowAll();
  50 };
  51
  52 #endif