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         int height;     ///< Number of display lines needed to show all of the line
  18         bool visible;
  19         bool expanded;
  20
  21         OneLine();
  22         virtual ~OneLine() {}
  23 };
  24
  25 /**
  26  */
  27 class ContractionState {
  28         void Grow(int sizeNew);
  29         enum { growSize = 4000 };
  30         int linesInDoc;
  31         mutable int linesInDisplay;
  32         mutable OneLine *lines;
  33         int size;
  34         mutable int *docLines;
  35         mutable int sizeDocLines;
  36         mutable bool valid;
  37         void MakeValid() const;
  38
  39 public:
  40         ContractionState();
  41         virtual ~ContractionState();
  42
  43         void Clear();
  44
  45         int LinesInDoc() const;
  46         int LinesDisplayed() const;
  47         int DisplayFromDoc(int lineDoc) const;
  48         int DocFromDisplay(int lineDisplay) const;
  49
  50         void InsertLines(int lineDoc, int lineCount);
  51         void DeleteLines(int lineDoc, int lineCount);
  52
  53         bool GetVisible(int lineDoc) const;
  54         bool SetVisible(int lineDocStart, int lineDocEnd, bool visible);
  55
  56         bool GetExpanded(int lineDoc) const;
  57         bool SetExpanded(int lineDoc, bool expanded);
  58
  59         int GetHeight(int lineDoc) const;
  60         bool SetHeight(int lineDoc, int height);
  61
  62         void ShowAll();
  63 };
  64
  65 #endif