contrib/src/stc/scintilla/src/ContractionState.h

   1 // Scintilla source code edit control
   2 /** @file ContractionState.h
   3  ** Manages visibility of lines for folding.
   4  **/
   5 // Copyright 1998-2001 by Neil Hodgson <neilh@scintilla.org>
   6 // The License.txt file describes the conditions under which this software may be distributed.
   7
   8 #ifndef CONTRACTIONSTATE_H
   9 #define CONTRACTIONSTATE_H
  10
  11 /**
  12  */
  13 class OneLine {
  14 public:
  15         int displayLine;        ///< Position within set of visible lines
  16         int docLine;            ///< Inverse of @a displayLine
  17         bool visible;
  18         bool expanded;
  19
  20         OneLine();
  21         virtual ~OneLine() {}
  22 };
  23
  24 /**
  25  */
  26 class ContractionState {
  27         void Grow(int sizeNew);
  28         enum { growSize = 4000 };
  29         int linesInDoc;
  30         int linesInDisplay;
  31         mutable OneLine *lines;
  32         int size;
  33         mutable bool valid;
  34         void MakeValid() const;
  35
  36 public:
  37         ContractionState();
  38         virtual ~ContractionState();
  39
  40         void Clear();
  41
  42         int LinesInDoc() const;
  43         int LinesDisplayed() const;
  44         int DisplayFromDoc(int lineDoc) const;
  45         int DocFromDisplay(int lineDisplay) const;
  46
  47         void InsertLines(int lineDoc, int lineCount);
  48         void DeleteLines(int lineDoc, int lineCount);
  49
  50         bool GetVisible(int lineDoc) const;
  51         bool SetVisible(int lineDocStart, int lineDocEnd, bool visible);
  52
  53         bool GetExpanded(int lineDoc) const;
  54         bool SetExpanded(int lineDoc, bool expanded);
  55
  56     void ShowAll();
  57 };
  58
  59 #endif