]> git.lyx.org Git - lyx.git/blobdiff - src/lyxtext.h
John's Layout Tabular UI improvements and Martins fixes to clearing the
[lyx.git] / src / lyxtext.h
index 04b2e8af8be90dfa446ab0c01c113265f56b8ea1..8c6114ea6241f02b5b2536f47f266d30b3df5723 100644 (file)
@@ -5,7 +5,7 @@
  *           LyX, The Document Processor
  *      
  *           Copyright 1995 Matthias Ettrich
- *           Copyright 1995-1999 The LyX Team.
+ *           Copyright 1995-2001 The LyX Team.
  *
  * ====================================================== */
 
 #endif
 
 #include "lyxfont.h"
-#include "lyxrow.h"
-#include "undo.h"
 #include "lyxcursor.h"
-#include "lyxparagraph.h"
+#include "layout.h"
+#include "LColor.h"
+#include "insets/inset.h"
 
 class Buffer;
 class BufferParams;
-class LyXScreen;
+class BufferView;
+class InsetText;
+class Paragraph;
+class Row;
+class Spacing;
+class UpdatableInset;
+class VSpace;
+
 
 /**
   This class holds the mapping between buffer paragraphs and screen rows.
@@ -34,113 +41,152 @@ public:
        ///
        enum text_status {
                ///
-               UNCHANGED,
+               UNCHANGED = 0,
                ///
-               NEED_LITTLE_REFRESH,
+               CHANGED_IN_DRAW = 1,
                ///
-               NEED_MORE_REFRESH,
+               NEED_VERY_LITTLE_REFRESH = 2,
                ///
-               NEED_VERY_LITTLE_REFRESH
+               NEED_MORE_REFRESH = 3
        };
-
-       /// points to Buffer.params
-       BufferParams * parameters;
-       /// points to Buffer
-       Buffer * params;
        ///
-       int number_of_rows;
-       ///
-       long height;
-       /// the current font settings
-       LyXFont current_font;
-       /// the current font
-       LyXFont real_current_font;
+       enum word_location {
+               // the word around the cursor, only if the cursor is
+               //not at a boundary
+               WHOLE_WORD_STRICT,
+               // the word around the cursor
+               WHOLE_WORD,
+               /// the word begining from the cursor position
+               PARTIAL_WORD,
+               /// the word around the cursor or before the cursor
+               PREVIOUS_WORD,
+               /// the next word (not yet used)
+               NEXT_WORD
+       };
 
        /// Constructor
-       LyXText(int paperwidth, Buffer *);
+       LyXText(BufferView *);
+       ///
+       LyXText(InsetText *);
    
        /// Destructor
        ~LyXText();
-   
+
+       void init(BufferView *, bool reinit = false);
+       ///
+       mutable int number_of_rows;
+       ///
+       mutable int height;
+       ///
+       mutable unsigned int width;
+       /// the current font settings
+       mutable LyXFont current_font;
+       /// the current font
+       mutable LyXFont real_current_font;
+       /// first visible pixel-row is set from LyXScreen!!!
+       // unsigned is wrong here for text-insets!
+       int first;
+       ///
+       BufferView * bv_owner;
+       ///
+       InsetText * inset_owner;
        ///
-       LyXFont GetFont(LyXParagraph * par,
-                       LyXParagraph::size_type pos);
+       UpdatableInset * the_locking_inset;
+
+       ///
+       int getRealCursorX(BufferView *) const;
+       ///
+       LyXFont const getFont(Buffer const *, Paragraph * par,
+               lyx::pos_type pos) const;
+       ///
+       LyXFont const getLayoutFont(Buffer const *, Paragraph * par) const;
        ///
-       void SetCharFont(LyXParagraph * par,
-                        LyXParagraph::size_type pos,
-                        LyXFont font);
-       /// returns a pointer to the very first LyXParagraph
-       LyXParagraph * FirstParagraph();
+       LyXFont const getLabelFont(Buffer const *, Paragraph * par) const;
+       ///
+       void setCharFont(Buffer const *, Paragraph * par,
+                        lyx::pos_type pos, LyXFont const & font);
+       void setCharFont(BufferView *, Paragraph * par,
+                        lyx::pos_type pos, LyXFont const & font, bool toggleall);
+       /// returns a pointer to the very first Paragraph
+       Paragraph * firstParagraph() const;
   
        /// what you expect when pressing <enter> at cursor position
-       void BreakParagraph(char keep_layout = 0);
+       void breakParagraph(BufferView *, char keep_layout = 0);
 
        /** set layout over selection and make a total rebreak of
          those paragraphs
          */
-       void SetLayout(char layout);
+       Paragraph * setLayout(BufferView *, LyXCursor & actual_cursor,
+                                LyXCursor & selection_start,
+                                LyXCursor & selection_end,
+                                lyx::layout_type layout);
+       ///
+       void setLayout(BufferView *, lyx::layout_type layout);
        
        /// used in setlayout
-       void MakeFontEntriesLayoutSpecific(LyXParagraph * par);
+       void makeFontEntriesLayoutSpecific(Buffer const *, Paragraph * par);
        
        /** increment depth over selection and make a total rebreak of those 
          paragraphs
          */
-       void IncDepth();
+       void incDepth(BufferView *);
        
        /** decrement depth over selection and make a total rebreak of those  
          paragraphs */
-       void DecDepth();
+       void decDepth(BufferView *);
 
        /** Get the depth at current cursor position
         */
-       int GetDepth() { return cursor.par->GetDepth(); }
+       int getDepth() const;
        
        /** set font over selection and make a total rebreak of those
          paragraphs.
          toggleall defaults to false.
          */
-       void SetFont(LyXFont font, bool toggleall = false);
+       void setFont(BufferView *, LyXFont const &, bool toggleall = false);
        
        /** deletes and inserts again all paragaphs between the cursor
-         and the specified par .The Cursor is needed to set the refreshing
+         and the specified parThe Cursor is needed to set the refreshing
          parameters. 
          This function is needed after SetLayout and SetFont etc.
          */
-       void RedoParagraphs(LyXCursor cursor, LyXParagraph * end_par);
+       void redoParagraphs(BufferView *, LyXCursor const & cursor,
+                           Paragraph const * end_par) const;
        ///
-       void RedoParagraph();
+       void redoParagraph(BufferView *) const;
        
        ///
-       void ToggleFree(LyXFont font, bool toggleall = false);
+       void toggleFree(BufferView *, LyXFont const &, bool toggleall = false);
+
+       ///
+       string getStringToIndex(BufferView *);
        
        /** recalculates the heights of all previous rows of the
            specified paragraph.  needed, if the last characters font
            has changed.  
            */
-       void RedoHeightOfParagraph(LyXCursor cursor);
+       void redoHeightOfParagraph(BufferView *, LyXCursor const & cursor);
        
        /** forces the redrawing of a paragraph. Needed when manipulating a 
            right address box
            */ 
-       void RedoDrawingOfParagraph(LyXCursor cursor);
+       void redoDrawingOfParagraph(BufferView *, LyXCursor const & cursor);
        
        /** insert a character, moves all the following breaks in the 
          same Paragraph one to the right and make a little rebreak
          */
-       void InsertChar(char c);
+       void insertChar(BufferView *, char c);
        ///
-       void InsertInset(Inset * inset);
+       void insertInset(BufferView *, Inset * inset);
    
-       /// completes the insertion with a full rebreak
-       int FullRebreak();
+       /** Completes the insertion with a full rebreak.
+           Returns true if something was broken. */
+       bool fullRebreak(BufferView *);
 
        ///
-       LyXParagraph::footnote_flag GetFootnoteFlag(int row);
+       mutable Row * need_break_row;
        ///
-       Row * need_break_row;
-       ///
-       long refresh_y;
+       mutable int refresh_y;
        ///
        int refresh_height;
        ///
@@ -148,178 +194,227 @@ public:
        ///
        int refresh_x;
        ///
-       Row * refresh_row;
+       mutable Row * refresh_row;
        ///
-       int refresh_pos;
-       
+       lyx::pos_type refresh_pos;
+
+       /// give and set the LyXText status
+       text_status status() const;
+       ///
+       void status(BufferView *, text_status) const;
+
+private:       
        /** wether the screen needs a refresh,
           starting with refresh_y
           */
-       text_status status;
+       mutable text_status status_;
        
+public:
        /** returns a pointer to the row near the specified y-coordinate
          (relative to the whole text). y is set to the real beginning
          of this row
          */ 
-       Row * GetRowNearY(long & y);
+       Row * getRowNearY(int & y) const;
        
        /** returns the column near the specified x-coordinate of the row 
         x is set to the real beginning of this column
         */ 
-       int GetColumnNearX(Row * row, int & x);
+       lyx::pos_type getColumnNearX(BufferView *, Row * row,
+                                           int & x, bool & boundary) const;
        
        /** returns a pointer to a specified row. y is set to the beginning
         of the row
         */
-       Row * GetRow(LyXParagraph * par,
-                    LyXParagraph::size_type pos, long & y);
+       Row * getRow(Paragraph * par,
+                    lyx::pos_type pos, int & y) const;
+       /** returns the firstrow, this could be done with the above too but
+           IMO it's stupid to have to allocate a dummy y all the time I need
+           the first row
+       */
+       Row * firstRow() { return firstrow; }
+                       
        /** returns the height of a default row, needed  for scrollbar
         */
-       int DefaultHeight();
+       int defaultHeight() const;
    
        /** The cursor.
          Later this variable has to be removed. There should be now internal
          cursor in a text (and thus not in a buffer). By keeping this it is
          (I think) impossible to have several views with the same buffer, but
          the cursor placed at different places.
+         [later]
+         Since the LyXText now has been moved from Buffer to BufferView
+         it should not be absolutely needed to move the cursor...
          */
-       LyXCursor cursor;
-   
-       /* the selection cursor */
-       /// 
-       bool selection;
-       ///
-       bool mark_set;
-
-       ///
-       LyXCursor sel_cursor;
-       ///
-       LyXCursor sel_start_cursor;
-       ///
-       LyXCursor sel_end_cursor;
-       /// needed for the toggling
-       LyXCursor last_sel_cursor;
-       ///
-       LyXCursor toggle_cursor;
-       ///
-       LyXCursor toggle_end_cursor;
+       mutable LyXCursor cursor; // actual cursor position
+
+       /** The structure that keeps track of the selections set. */
+       struct Selection {
+               Selection() 
+                       : set_(false), mark_(false)
+                       {}
+               bool set() const {
+                       return set_;
+               }
+               void set(bool s) {
+                       set_ = s;
+               }
+               bool mark() const {
+                       return mark_;
+               }
+               void mark(bool m) {
+                       mark_ = m;
+               }
+               LyXCursor cursor; // temporary cursor to hold a cursor position
+                                 // until setSelection is called!
+               LyXCursor start;  // start of a REAL selection
+               LyXCursor end;    // end of a REAL selection
+       private:
+               bool set_; // former selection
+               bool mark_; // former mark_set
+               
+       };
+       mutable Selection selection;
+
+       /// needed for the toggling (cursor position on last selection made)
+       mutable LyXCursor last_sel_cursor; 
+       /// needed for toggling the selection in screen.C
+       mutable LyXCursor toggle_cursor;
+       /// needed for toggling the selection in screen.C
+       mutable LyXCursor toggle_end_cursor;
    
        /// need the selection cursor:
-       void SetSelection();
+       void setSelection(BufferView *);
        ///
-       void ClearSelection();
-
+       void clearSelection() const;
+       ///
+       string const selectionAsString(Buffer const *, bool label) const;
+       
+       /// select the word we need depending on word_location
+       void getWord(LyXCursor & from, LyXCursor & to, 
+                    word_location const) const;
        /// just selects the word the cursor is in
-       void SelectWord();
+       void selectWord(BufferView *, word_location const);
+       /// returns the inset at cursor (if it exists), 0 otherwise
+       Inset * getInset() const;
 
        /** 'selects" the next word, where the cursor is not in 
         and returns this word as string. THe cursor will be moved 
         to the beginning of this word. 
         With SelectSelectedWord can this be highlighted really
         */ 
-       char * SelectNextWord(float & value);
+       string const selectNextWordToSpellcheck(BufferView *, float & value) const;
+       ///
+       void selectSelectedWord(BufferView *);
        ///
-       void SelectSelectedWord();
+       void setCursor(BufferView *, Paragraph * par,
+                      lyx::pos_type pos,
+                      bool setfont = true,
+                      bool boundary = false) const;
        ///
-       void SetCursor(LyXParagraph * par,
-                      LyXParagraph::size_type pos);
+       void setCursor(BufferView *, LyXCursor &, Paragraph * par,
+                      lyx::pos_type pos,
+                      bool boundary = false) const;
        ///
-       void SetCursorIntern(LyXParagraph * par,
-                            LyXParagraph::size_type pos);
+       void setCursorIntern(BufferView *, Paragraph * par,
+                            lyx::pos_type pos,
+                            bool setfont = true,
+                            bool boundary = false) const;
        ///
-       void SetCursorFromCoordinates(int x, long y);
+       void setCurrentFont(BufferView *) const;
+
+       ///
+       bool isBoundary(Buffer const *, Paragraph * par,
+                       lyx::pos_type pos) const;
        ///
-       void CursorUp();
+       bool isBoundary(Buffer const *, Paragraph * par,
+                        lyx::pos_type pos,
+                        LyXFont const & font) const;
+
        ///
-       void CursorDown();
+       void setCursorFromCoordinates(BufferView *, int x, int y) const;
        ///
-       void CursorLeft();
+       void setCursorFromCoordinates(BufferView *, LyXCursor &,
+                                     int x, int y) const;
        ///
-       void CursorRight();
+       void cursorUp(BufferView *) const;
        ///
-       void CursorLeftOneWord();
+       void cursorDown(BufferView *) const;
        ///
-       void CursorRightOneWord();
+       void cursorLeft(BufferView *, bool internal = true) const;
        ///
-       void CursorUpParagraph();
+       void cursorRight(BufferView *, bool internal = true) const;
        ///
-       void CursorDownParagraph();
+       void cursorLeftOneWord(BufferView *) const;
        ///
-       void CursorHome();
+       void cursorLeftOneWord(LyXCursor &) const;
        ///
-       void CursorEnd();
+       void cursorRightOneWord(BufferView *) const;
        ///
-       void CursorTab();
+       void cursorUpParagraph(BufferView *) const;
        ///
-       void CursorTop();
+       void cursorDownParagraph(BufferView *) const;
        ///
-       void CursorBottom();
+       void cursorHome(BufferView *) const;
        ///
-       void Delete();
+       void cursorEnd(BufferView *) const;
        ///
-       void Backspace();
+       void cursorTab(BufferView *) const;
        ///
-       void DeleteWordForward();
+       void cursorTop(BufferView *) const;
        ///
-       void DeleteWordBackward();
+       void cursorBottom(BufferView *) const;
        ///
-       void DeleteLineForward();
+       void Delete(BufferView *);
+       ///
+       void backspace(BufferView *);
+       ///
+       void deleteWordForward(BufferView *);
+       ///
+       void deleteWordBackward(BufferView *);
+       ///
+       void deleteLineForward(BufferView *);
+       ///
+       bool selectWordWhenUnderCursor(BufferView *, 
+                                      word_location const);
        ///
-       int SelectWordWhenUnderCursor();
-
        enum TextCase {
+               ///
                text_lowercase = 0,
+               ///
                text_capitalization = 1,
+               ///
                text_uppercase = 2
        };
        /// Change the case of the word at cursor position.
-       void ChangeWordCase(TextCase action);
-
+       void changeCase(BufferView *, TextCase action);
+       ///
+       void changeRegionCase(BufferView * bview,
+                                      LyXCursor const & from,
+                                      LyXCursor const & to,
+                                      LyXText::TextCase action);
+       ///
+       void transposeChars(BufferView &);
+       
        /** returns a printed row in a pixmap. The y value is needed to
          decide, wether it is selected text or not. This is a strange
          solution but faster.
-        */ 
-       void GetVisibleRow(LyXScreen & scr, int offset, 
-                          Row * row_ptr, long y);
-                                          
-       /* footnotes: */
-       ///
-       void ToggleFootnote();
-       ///
-       void OpenStuff();
-       ///
-       void OpenFootnotes();
-       ///
-       void OpenFootnote();
-       ///
-       void CloseFootnotes();
-       ///
-       void CloseFootnote();
+        */
+       void getVisibleRow(BufferView *, int y_offset, int x_offset,
+                          Row * row_ptr, int y, bool cleared=false);
 
-       /** turn the selection into a new environment. If there is no
-         selection, create an empty environment
-        */ 
-       void InsertFootnoteEnvironment(LyXParagraph::footnote_kind kind);
-       ///
-       void MeltFootnoteEnvironment();
+       /// 
+       void toggleInset(BufferView *);
        ///
-       void CutSelection(bool = true);
+       void cutSelection(BufferView *, bool doclear = true, bool realcut = true);
        ///
-       void CopySelection();
+       void copySelection(BufferView *);
        ///
-       void PasteSelection();
+       void pasteSelection(BufferView *);
        ///
        void copyEnvironmentType();
        ///
-       void pasteEnvironmentType();
-       ///
-       void InsertFootnote();
-       ///
-       void InsertMarginpar();
-       ///
-       void InsertFigure();
-       ///
-       void InsertTabular();
+       void pasteEnvironmentType(BufferView *);
 
        /** the DTP switches for paragraphs. LyX will store the top settings
         always in the first physical paragraph, the bottom settings in the
@@ -327,259 +422,322 @@ public:
         settings are given to the new one. So I can make shure, they do not
         duplicate themself (and you cannnot make dirty things with them! )
         */ 
-       void SetParagraph(bool line_top, bool line_bottom,
+       void setParagraph(BufferView *,
+                         bool line_top, bool line_bottom,
                          bool pagebreak_top, bool pagebreak_bottom,
-                         VSpace space_top, VSpace space_bottom,
+                         VSpace const & space_top,
+                         VSpace const & space_bottom,
+                         Spacing const & spacing,
                          LyXAlignment align, 
                          string labelwidthstring,
                          bool noindent);
-        void SetParagraphExtraOpt(int type,
-                                  char const * width,
-                                  char const * widthp,
-                                  int alignment, bool hfill,
-                                  bool start_minipage);
 
        /* these things are for search and replace */
 
-       /** returns true if the specified string is at the specified
-         position
-         */
-       bool IsStringInText(LyXParagraph * par,
-                           LyXParagraph::size_type pos,
-                           char const * str);
        /** sets the selection over the number of characters of string,
          no check!!
          */
-       void SetSelectionOverString(char const * str);
+       void setSelectionOverString(BufferView *, string const & str);
 
        /** simple replacing. The font of the first selected character
          is used
          */
-       void ReplaceSelectionWithString(char const * string);
+       void replaceSelectionWithString(BufferView *, string const & str);
 
-       /** if the string can be found: return true and set the cursor to
-         the new position */
-       bool SearchForward(char const * string);
-       bool SearchBackward(char const * string);
-
-       /// needed to insert the selection
-       void InsertStringA(LyXParagraph::TextContainer const & text);
        /// needed to insert the selection
-       void InsertStringB(LyXParagraph::TextContainer const & text);
+       void insertStringAsLines(BufferView *, string const & str);
        /// needed to insert the selection
-       void InsertStringA(char const * string);
-       /// needed to insert the selection
-       void InsertStringB(char const * string);
-
-       /// usefull when texing from within LyX
-       bool GotoNextError();
+       void insertStringAsParagraphs(BufferView *, string const & str);
 
-       /// just another feature :)
-       bool GotoNextNote();
-
-       /** needed to switch between different classes this works
-         for a list of paragraphs beginning with the specified par 
-         return value is the number of wrong conversions
-         */ 
-       int SwitchLayoutsBetweenClasses(char class1, char class2,
-                                       LyXParagraph * par);
+       /// Find next inset of some specified type.
+       bool gotoNextInset(BufferView *, std::vector<Inset::Code> const & codes,
+                          string const & contents = string()) const;
+       ///
 
        /* for the greater insets */
   
-       /// returns 0 if inset wasn't found
-       int UpdateInset(Inset * inset);
+       /// returns false if inset wasn't found
+       bool updateInset(BufferView *, Inset *);
        ///
-       void CheckParagraph(LyXParagraph * par,
-                           LyXParagraph::size_type pos);
+       void checkParagraph(BufferView *, Paragraph * par, lyx::pos_type pos);
        ///
-       int NumberOfCell(LyXParagraph * par,
-                        LyXParagraph::size_type pos);
-       /* table stuff -- begin*/
-
-       /** all table features of the text-class are put together in
-         this function. Possible values of feature are defined in table.h
-         */
-       void TableFeatures(int feature, string val);
-        ///
-       void TableFeatures(int feature);
+       int numberOfCell(Paragraph * par, lyx::pos_type pos) const;
+       ///
+       void removeTableRow(LyXCursor & cursor) const;
+       ///
+       bool isEmptyTableCell() const;
+       ///
+       void toggleAppendix(BufferView *);
+       ///
+       int workWidth(BufferView *) const;
+       ///
+       int workWidth(BufferView *, Inset * inset) const;
+       ///
+       void computeBidiTables(Buffer const *, Row * row) const;
 
-       /** pos points at the beginning of the next cell (if there is one)
-        */
-       int WidthOfCell(LyXParagraph * par, LyXParagraph::size_type & pos);
-       ///
-       void CheckParagraphInTable(LyXParagraph * par,
-                                  LyXParagraph::size_type pos);
-       ///
-       void InsertCharInTable(char c);
-       ///
-       void BackspaceInTable();
-       ///
-       bool HitInTable(Row * row, int x);
-       ///
-       bool MouseHitInTable(int x, long y);
-       /* table stuff -- end*/
-       ///
-       LyXParagraph * GetParFromID(int id);
-
-       // undo functions
-       /// returns false if no undo possible
-       bool  TextUndo();
-       /// returns false if no redo possible
-       bool  TextRedo();
-       /// used by TextUndo/TextRedo
-       bool TextHandleUndo(Undo * undo);
-       /// makes sure the next operation will be stored
-       void FinishUndo();
-       /// this is dangerous and for internal use only
-       void FreezeUndo();
-       /// this is dangerous and for internal use only
-       void UnFreezeUndo();
-       /// the flag used by FinishUndo();
-       bool undo_finished;
-       /// a flag
-       bool undo_frozen;
-       ///
-       void SetUndo(Undo::undo_kind kind, LyXParagraph * before,
-                    LyXParagraph * end);
-       ///
-       void SetRedo(Undo::undo_kind kind, LyXParagraph * before,
-                    LyXParagraph * end);
-       ///
-       Undo * CreateUndo(Undo::undo_kind kind, LyXParagraph * before,
-                         LyXParagraph * end);
-       /// for external use in lyx_cb.C
-       void SetCursorParUndo();
-       ///
-       void CursorLeftIntern();
-       ///
-       void CursorRightIntern();
-        ///
-        void RemoveTableRow(LyXCursor * cursor);
-        ///
-        bool IsEmptyTableRow(LyXCursor * cursor) const;
-        ///
-        bool IsEmptyTableCell() const;
-        ///
-        void toggleAppendix();
+       /// Maps positions in the visual string to positions in logical string.
+       inline
+       lyx::pos_type log2vis(lyx::pos_type pos) const {
+               if (bidi_start == -1)
+                       return pos;
+               else
+                       return log2vis_list[pos-bidi_start];
+       }
 
+       /// Maps positions in the logical string to positions in visual string.
+       inline
+       lyx::pos_type vis2log(lyx::pos_type pos) const {
+               if (bidi_start == -1)
+                       return pos;
+               else
+                       return vis2log_list[pos-bidi_start];
+       }
+       ///
+       inline
+       lyx::pos_type bidi_level(lyx::pos_type pos) const {
+               if (bidi_start == -1)
+                       return 0;
+               else
+                       return bidi_levels[pos-bidi_start];
+       }       
+       ///
+       inline
+       bool bidi_InRange(lyx::pos_type pos) const {
+               return bidi_start == -1 ||
+                       (bidi_start <= pos && pos <= bidi_end);
+       }
 private:
        ///
-       Row * firstrow;
+       mutable Row * firstrow;
        ///
-       Row * lastrow;
+       mutable Row * lastrow;
 
-       /** Copybuffer for copy environment type
+       /** Copybuffer for copy environment type.
          Asger has learned that this should be a buffer-property instead
          Lgb has learned that 'char' is a lousy type for non-characters
          */
-       char copylayouttype;
-
-       /// the currentrow is needed to access rows faster*/ 
-       Row * currentrow;               /* pointer to the current row  */
-       /// position in the text 
-       long  currentrow_y;
-       /// width of the paper
-       unsigned short  paperwidth;
-   
+       lyx::layout_type copylayouttype;
+
        /** inserts a new row behind the specified row, increments
-        * the touched counters */
-       void InsertRow(Row * row, LyXParagraph * par,
-                      LyXParagraph::size_type pos );
+           the touched counters */
+       void insertRow(Row * row, Paragraph * par, lyx::pos_type pos) const;
        /** removes the row and reset the touched counters */
-       void RemoveRow(Row * row);
+       void removeRow(Row * row) const;
 
        /** remove all following rows of the paragraph of the specified row. */
-       void RemoveParagraph(Row * row);
+       void removeParagraph(Row * row) const;
 
        /** insert the specified paragraph behind the specified row */
-       void InsertParagraph(LyXParagraph * par, Row * row);
+       void insertParagraph(BufferView *,
+                            Paragraph * par, Row * row) const;
 
        /** appends  the implizit specified paragraph behind the specified row,
         * start at the implizit given position */
-       void AppendParagraph(Row * row);
+       void appendParagraph(BufferView *, Row * row) const;
    
        ///
-       void BreakAgain(Row * row);
+       void breakAgain(BufferView *, Row * row) const;
        ///
-       void BreakAgainOneRow(Row * row);
-       ///
-       void SetHeightOfRow(Row * row_ptr); /* calculate and set the height 
-                                           * of the row */
+       void breakAgainOneRow(BufferView *, Row * row);
+       /// Calculate and set the height of the row
+       void setHeightOfRow(BufferView *, Row * row_ptr) const;
 
        /** this calculates the specified parameters. needed when setting
         * the cursor and when creating a visible row */ 
-       void PrepareToPrint(Row * row, float & x, float & fill_separator, 
-                           float & fill_hfill, float & fill_label_hfill);
-       ///
-       void DeleteEmptyParagraphMechanism(LyXCursor old_cursor);
+       void prepareToPrint(BufferView *, Row * row, float & x,
+                           float & fill_separator, 
+                           float & fill_hfill,
+                           float & fill_label_hfill,
+                           bool bidi = true) const;
+
+       /// A struct used for drawing routines
+       struct DrawRowParams {
+               // the bufferview
+               BufferView * bv; 
+               // the row
+               Row * row;
+               // the painter to use
+               Painter * pain; 
+               // has the background been cleared
+               bool cleared;
+               /// x offset (e.g. for insets)
+               int xo;
+               /// y offset (e.g. for insets)
+               int yo;
+               /// FIXME
+               float x;
+               /// FIXME
+               int y;
+               /// the inset/view full width
+               int width;
+               /// hfill size
+               float hfill;
+               /// label hfill size
+               float label_hfill;
+               /// fill separator size
+               float separator;
+       };
+                
+       /// paint the background
+       bool paintRowBackground(DrawRowParams & p);
+       /// paint the selection background 
+       void paintRowSelection(DrawRowParams & p);
+
+       /// paint appendix marker
+       void paintRowAppendix(DrawRowParams & p);
+        
+       /// paint env depth bar 
+       void paintRowDepthBar(DrawRowParams & p);
+       /// get the on-screen size of the length marker
+       int getLengthMarkerHeight(BufferView * bv, VSpace const & vsp) const;
+       /// paint an added space marker
+       int drawLengthMarker(DrawRowParams & p, string const & str,
+               VSpace const & vsp, int start); 
+       /// paint a first row in a paragraph
+       void paintFirstRow(DrawRowParams & p);
+       /// paint a last row in a paragraph
+       void paintLastRow(DrawRowParams & p);
+       /// paint text
+       void paintRowText(DrawRowParams & p);
+       // fix the cursor `cur' after a characters has been deleted at `where'
+       // position. Called by deleteEmptyParagraphMechanism
+       void fixCursorAfterDelete(BufferView * bview,
+                                 LyXCursor & cur,
+                                 LyXCursor const & where) const;
+       
+       /// delete double space or empty paragraphs around old_cursor 
+       void deleteEmptyParagraphMechanism(BufferView *,
+                                          LyXCursor const & old_cursor) const;
 
+public:
        /** Updates all counters starting BEHIND the row. Changed paragraphs
         * with a dynamic left margin will be rebroken. */ 
-       void UpdateCounters(Row * row);
+       void updateCounters(BufferView *, Row * row) const;
+private:
        ///
-       void SetCounter(LyXParagraph * par);
+       void setCounter(Buffer const *, Paragraph * par) const;
    
        /*
         * some low level functions
         */
        
        ///
-       int SingleWidth(LyXParagraph * par,
-                       LyXParagraph::size_type pos);
-       ///
-       int SingleWidth(LyXParagraph * par,
-                       LyXParagraph::size_type pos, char c);
-       ///
-       void Draw(Row * row, LyXParagraph::size_type & pos,
-                 LyXScreen & scr,
-                 int offset, float & x);
+       int singleWidth(BufferView *, Paragraph * par,
+               lyx::pos_type pos) const;
+       ///
+       int singleWidth(BufferView *, Paragraph * par,
+               lyx::pos_type pos, char c) const;
+
+       /// draw normal chars
+       void drawChars(DrawRowParams & p, lyx::pos_type & vpos,
+               bool hebrew, bool arabic);
+       /// draw from arabic composed char
+       void drawArabicComposeChar(DrawRowParams & p, lyx::pos_type & vpos);
+       /// draw from hebrew composed char
+       void drawHebrewComposeChar(DrawRowParams & p, lyx::pos_type & vpos);
+       /// draw a mark for foreign language, starting from orig_x
+       void drawForeignMark(DrawRowParams & p, float const orig_x, LyXFont const & orig_font);
+       /// draw an inset 
+       void drawInset(DrawRowParams & p, lyx::pos_type const pos);
+       /// draw new line marker
+       void drawNewline(DrawRowParams & p, lyx::pos_type const pos);
+       /// draw text
+       void draw(DrawRowParams & p, lyx::pos_type & vpos);
+
        /// get the next breakpoint in a given paragraph
-       LyXParagraph::size_type NextBreakPoint(Row * row,
-                                              int width);
+       lyx::pos_type nextBreakPoint(BufferView *, Row const * row, int width) const;
        /// returns the minimum space a row needs on the screen in pixel
-       int Fill(Row * row, int paperwidth);
+       int fill(BufferView *, Row * row, int workwidth) const;
        
        /** returns the minimum space a manual label needs on the
          screen in pixel */ 
-       int LabelFill(Row * row);
+       int labelFill(BufferView *, Row const * row) const;
 
        ///
-       LyXParagraph::size_type BeginningOfMainBody(LyXParagraph * par) const;
+       lyx::pos_type beginningOfMainBody(Buffer const *, Paragraph const * par) const;
+       
        /** Returns the left beginning of the text.
          This information cannot be taken from the layouts-objekt, because
          in LaTeX the beginning of the text fits in some cases
          (for example sections) exactly the label-width.
          */
-       int LeftMargin(Row * row);
+       int leftMargin(BufferView *, Row const * row) const;
        ///
-       int RightMargin(Row * row);
+       int rightMargin(Buffer const *, Row const * row) const;
        ///
-       int LabelEnd (Row * row);
+       int labelEnd (BufferView *, Row const * row) const;
 
        /** returns the number of separators in the specified row.
          The separator on the very last column doesnt count
          */ 
-       int NumberOfSeparators(Row * row);
+       int numberOfSeparators(Buffer const *, Row const * row) const;
 
        /** returns the number of hfills in the specified row. The
          LyX-Hfill is a LaTeX \hfill so that the hfills at the
          beginning and at the end were ignored. This is {\em MUCH}
          more usefull than not to ignore!
          */
-       int NumberOfHfills(Row * row);
+       int numberOfHfills(Buffer const *, Row const * row) const;
    
        /// like NumberOfHfills, but only those in the manual label!
-       int NumberOfLabelHfills(Row * row);
-
+       int numberOfLabelHfills(Buffer const *, Row const * row) const;
        /** returns true, if a expansion is needed. Rules are given by 
          LaTeX
          */
-       bool HfillExpansion(Row * row_ptr,
-                           LyXParagraph::size_type pos);
+       bool hfillExpansion(Buffer const *, Row const * row_ptr,
+                           lyx::pos_type pos) const;
+       /// 
+       LColor::color backgroundColor();
+
+
+       ///
+       mutable std::vector<lyx::pos_type> log2vis_list;
+
+       ///
+       mutable std::vector<lyx::pos_type> vis2log_list;
+
+       ///
+       mutable std::vector<lyx::pos_type> bidi_levels;
+
+       ///
+       mutable lyx::pos_type bidi_start;
+
+       ///
+       mutable lyx::pos_type bidi_end;
+
+       ///
+       mutable bool bidi_same_direction;
+
+       ///
+       unsigned char transformChar(unsigned char c, Paragraph * par,
+                                   lyx::pos_type pos) const;
+
        /** returns the paragraph position of the last character in the 
          specified row
          */
-       LyXParagraph::size_type RowLast(Row * row);
+       lyx::pos_type rowLast(Row const * row) const;
+       ///
+       lyx::pos_type rowLastPrintable(Row const * row) const;
+
+       ///
+       void charInserted();
+public:
+       //
+       // special owner functions
+       ///
+       Paragraph * ownerParagraph() const;
+       //
+       void ownerParagraph(Paragraph *) const;
+       // set it searching first for the right owner using the paragraph id
+       void ownerParagraph(int id, Paragraph *) const;
 };
 
 #endif