]> git.lyx.org Git - lyx.git/blobdiff - src/lyxtext.h
fix indexing first word in a list layout
[lyx.git] / src / lyxtext.h
index 01967e686e8066e5e241693e49cff2a5766e2899..8e35b20d518104ad3ea0fece4d3b04b5a80adaa2 100644 (file)
@@ -5,7 +5,7 @@
  *           LyX, The Document Processor
  *      
  *           Copyright 1995 Matthias Ettrich
- *           Copyright 1995-2000 The LyX Team.
+ *           Copyright 1995-2001 The LyX Team.
  *
  * ====================================================== */
 
 #endif
 
 #include "lyxfont.h"
-#include "undo.h"
 #include "lyxcursor.h"
-#include "lyxparagraph.h"
+#include "paragraph.h"
 #include "layout.h"
+#include "lyxrow.h"
+#include "vspace.h"
+#include "Spacing.h"
+#include "LColor.h"
 
 class Buffer;
 class BufferParams;
-class Row;
 class BufferView;
+class InsetText;
+
 
 /**
   This class holds the mapping between buffer paragraphs and screen rows.
@@ -35,124 +39,152 @@ 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
        };
-
-       enum Letter_Form {
-               FORM_ISOLATED,
-               FORM_INITIAL,
-               FORM_MEDIAL,
-               FORM_FINAL
+       ///
+       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(BufferView *, int paperwidth, Buffer *);
+       LyXText(BufferView *);
+       ///
+       LyXText(InsetText *);
    
        /// Destructor
        ~LyXText();
 
-       /// points to Buffer.params
-       BufferParams * bparams;
-       /// points to Buffer
-       Buffer * buffer;
+       void init(BufferView *, bool reinit = false);
        ///
        mutable int number_of_rows;
        ///
-       mutable long height;
+       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;
+       ///
+       UpdatableInset * the_locking_inset;
 
        ///
-       void owner(BufferView *);
-       
+       int getRealCursorX(BufferView *) const;
        ///
-       LyXFont GetFont(LyXParagraph * par,
-                       LyXParagraph::size_type pos) const;
+       LyXFont const getFont(Buffer const *, Paragraph * par,
+                       Paragraph::size_type pos) const;
        ///
-       void SetCharFont(LyXParagraph * par,
-                        LyXParagraph::size_type pos,
-                        LyXFont const & font);
-       /// returns a pointer to the very first LyXParagraph
-       LyXParagraph * FirstParagraph() const;
+       LyXFont const getLayoutFont(Buffer const *, Paragraph * par) const;
+       ///
+       LyXFont const getLabelFont(Buffer const *, Paragraph * par) const;
+       ///
+       void setCharFont(Buffer const *, Paragraph * par,
+                        Paragraph::size_type pos, LyXFont const & font);
+       void setCharFont(BufferView *, Paragraph * par,
+                        Paragraph::size_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(LyXTextClass::size_type layout);
+       Paragraph * setLayout(BufferView *, LyXCursor & actual_cursor,
+                                LyXCursor & selection_start,
+                                LyXCursor & selection_end,
+                                LyXTextClass::size_type layout);
+       void setLayout(BufferView *, LyXTextClass::size_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() const { return cursor.par->GetDepth(); }
+       int getDepth() const { return cursor.par()->getDepth(); }
        
        /** set font over selection and make a total rebreak of those
          paragraphs.
          toggleall defaults to false.
          */
-       void SetFont(LyXFont const & 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
          parameters. 
          This function is needed after SetLayout and SetFont etc.
          */
-       void RedoParagraphs(LyXCursor const & cursor,
-                           LyXParagraph const * end_par) const;
+       void redoParagraphs(BufferView *, LyXCursor const & cursor,
+                           Paragraph const * end_par) const;
        ///
-       void RedoParagraph() const;
+       void redoParagraph(BufferView *) const;
        
        ///
-       void ToggleFree(LyXFont const & 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 const & cursor);
+       void redoHeightOfParagraph(BufferView *, LyXCursor const & cursor);
        
        /** forces the redrawing of a paragraph. Needed when manipulating a 
            right address box
            */ 
-       void RedoDrawingOfParagraph(LyXCursor const & 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);
-       ///
-       Row * need_break_row;
+       mutable Row * need_break_row;
        ///
-       mutable long refresh_y;
+       mutable int refresh_y;
        ///
        int refresh_height;
        ///
@@ -163,31 +195,40 @@ public:
        mutable Row * refresh_row;
        ///
        int 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
           */
-       mutable 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) const;
+       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) const;
+       int 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) const;
+       Row * getRow(Paragraph * par,
+                    Paragraph::size_type pos, int & y) const;
+
        /** returns the height of a default row, needed  for scrollbar
         */
-       int DefaultHeight() const;
+       int defaultHeight() const;
    
        /** The cursor.
          Later this variable has to be removed. There should be now internal
@@ -199,19 +240,34 @@ public:
          it should not be absolutely needed to move the cursor...
          */
        mutable LyXCursor cursor;
-   
-       /* the selection cursor */
-       /// 
-       mutable bool selection;
-       ///
-       mutable bool mark_set;
 
-       ///
-       mutable LyXCursor sel_cursor;
-       ///
-       LyXCursor sel_start_cursor;
-       ///
-       mutable LyXCursor sel_end_cursor;
+       /** The structrue 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;
+               LyXCursor start;
+               LyXCursor end;
+       private:
+               bool set_; // former selection
+               bool mark_; // former mark_set
+               
+       };
+       mutable Selection selection;
+
        /// needed for the toggling
        LyXCursor last_sel_cursor;
        ///
@@ -220,123 +276,137 @@ public:
        LyXCursor toggle_end_cursor;
    
        /// need the selection cursor:
-       void SetSelection();
+       void setSelection(BufferView *);
        ///
-       void ClearSelection() const;
-
+       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 selectNextWord(BufferView *, float & value) const;
        ///
-       void SelectSelectedWord();
+       void selectSelectedWord(BufferView *);
        ///
-       void SetCursor(LyXParagraph * par,
-                      LyXParagraph::size_type pos,
-                      bool setfont = true) const;
+       void setCursor(BufferView *, Paragraph * par,
+                      Paragraph::size_type pos,
+                      bool setfont = true,
+                      bool boundary = false) const;
        ///
-       void SetCursorIntern(LyXParagraph * par,
-                            LyXParagraph::size_type pos,
-                            bool setfont = true) const;
+       void setCursor(BufferView *, LyXCursor &, Paragraph * par,
+                      Paragraph::size_type pos,
+                      bool boundary = false) const;
        ///
-       void SetCursorFromCoordinates(int x, long y) const;
-       void SetCursorFromCoordinates(LyXCursor &, int x, long y) const;
+       void setCursorIntern(BufferView *, Paragraph * par,
+                            Paragraph::size_type pos,
+                            bool setfont = true,
+                            bool boundary = false) const;
        ///
-       void CursorUp() const;
+       void setCurrentFont(BufferView *) const;
+
        ///
-       void CursorDown() const;
+       bool isBoundary(Buffer const *, Paragraph * par,
+                       Paragraph::size_type pos) const;
        ///
-       void CursorLeft() const;
+       bool isBoundary(Buffer const *, Paragraph * par,
+                        Paragraph::size_type pos,
+                        LyXFont const & font) const;
+
        ///
-       void CursorRight() const;
+       void setCursorFromCoordinates(BufferView *, int x, int y) const;
        ///
-       void CursorLeftOneWord() const;
+       void setCursorFromCoordinates(BufferView *, LyXCursor &,
+                                     int x, int y) const;
        ///
-       void CursorRightOneWord() const;
+       void cursorUp(BufferView *) const;
        ///
-       void CursorUpParagraph() const;
+       void cursorDown(BufferView *) const;
        ///
-       void CursorDownParagraph() const;
+       void cursorLeft(BufferView *, bool internal = true) const;
        ///
-       void CursorHome() const;
+       void cursorRight(BufferView *, bool internal = true) const;
        ///
-       void CursorEnd() const;
+       void cursorLeftOneWord(BufferView *) const;
        ///
-       void CursorTab() const;
+       void cursorLeftOneWord(LyXCursor &) const;
        ///
-       void CursorTop() const;
+       void cursorRightOneWord(BufferView *) const;
        ///
-       void CursorBottom() const;
+       void cursorUpParagraph(BufferView *) const;
        ///
-       void Delete();
+       void cursorDownParagraph(BufferView *) const;
        ///
-       void Backspace();
+       void cursorHome(BufferView *) const;
        ///
-       void DeleteWordForward();
+       void cursorEnd(BufferView *) const;
        ///
-       void DeleteWordBackward();
+       void cursorTab(BufferView *) const;
        ///
-       void DeleteLineForward();
+       void cursorTop(BufferView *) const;
+       ///
+       void cursorBottom(BufferView *) const;
+       ///
+       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(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
@@ -344,317 +414,269 @@ 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 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) const;
        /** 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 * str);
-
-       /** if the string can be found: return true and set the cursor to
-         the new position */
-       bool SearchForward(char const * str) const;
-       bool SearchBackward(char const * str) const;
+       void replaceSelectionWithString(BufferView *, string const & str);
 
        /// needed to insert the selection
-       void InsertStringA(string const & str);
+       void insertStringAsLines(BufferView *, string const & str);
        /// needed to insert the selection
-       void InsertStringB(string const & str);
-
-       /// usefull when texing from within LyX
-       bool GotoNextError() const;
+       void insertStringAsParagraphs(BufferView *, string const & str);
 
-       /// just another feature :)
-       bool GotoNextNote() const;
+       /// 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,
+                           Paragraph::size_type pos);
        ///
-       int NumberOfCell(LyXParagraph * par,
-                        LyXParagraph::size_type pos) const;
-       /* 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 const & val) const;
-        ///
-       void TableFeatures(int feature) const;
-
-       /** pos points at the beginning of the next cell (if there is one)
-        */
-       int WidthOfCell(LyXParagraph * par,
-                       LyXParagraph::size_type & pos) const;
+       int numberOfCell(Paragraph * par,
+                        Paragraph::size_type pos) const;
        ///
-       void CheckParagraphInTable(LyXParagraph * par,
-                                  LyXParagraph::size_type pos);
+       void removeTableRow(LyXCursor & cursor) const;
        ///
-       void InsertCharInTable(char c);
+       bool isEmptyTableCell() const;
        ///
-       void BackspaceInTable();
+       void toggleAppendix(BufferView *);
        ///
-       bool HitInTable(Row * row, int x) const;
+       int workWidth(BufferView *) const;
        ///
-       bool MouseHitInTable(int x, long y) const;
-       /* table stuff -- end*/
-       ///
-       LyXParagraph * GetParFromID(int id);
+       void computeBidiTables(Buffer const *, Row * row) const;
 
-       // 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();
-       mutable bool undo_finished;
-       /// a flag
-       bool undo_frozen;
-       ///
-       void SetUndo(Undo::undo_kind kind,
-                    LyXParagraph const * before,
-                    LyXParagraph const * end) const;
-       ///
-       void SetRedo(Undo::undo_kind kind,
-                    LyXParagraph const * before,
-                    LyXParagraph const * end);
-       ///
-       Undo * CreateUndo(Undo::undo_kind kind,
-                         LyXParagraph const * before,
-                         LyXParagraph const * end) const;
-       /// for external use in lyx_cb.C
-       void SetCursorParUndo();
-       ///
-       void CursorLeftIntern() const;
-       ///
-       void CursorRightIntern() const;
-       ///
-       void RemoveTableRow(LyXCursor * cursor) const;
-       ///
-       bool IsEmptyTableCell() const;
+       /// Maps positions in the visual string to positions in logical string.
+       inline
+       Paragraph::size_type log2vis(Paragraph::size_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
+       Paragraph::size_type vis2log(Paragraph::size_type pos) const {
+               if (bidi_start == -1)
+                       return pos;
+               else
+                       return vis2log_list[pos-bidi_start];
+       }
        ///
-       void toggleAppendix();
+       inline
+       Paragraph::size_type bidi_level(Paragraph::size_type pos) const {
+               if (bidi_start == -1)
+                       return 0;
+               else
+                       return bidi_levels[pos-bidi_start];
+       }       
        ///
-       unsigned short paperWidth() const { return paperwidth; }
+       inline
+       bool bidi_InRange(Paragraph::size_type pos) const {
+               return bidi_start == -1 ||
+                       (bidi_start <= pos && pos <= bidi_end);
+       }
 private:
-       ///
-       BufferView * owner_;
-       
-       /// width of the paper
-       unsigned short  paperwidth;
-
        ///
        mutable Row * firstrow;
        ///
        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
          */
        LyXTextClass::size_type copylayouttype;
 
-       /// the currentrow is needed to access rows faster*/ 
-       mutable Row * currentrow; // pointer to the current row
-       /// position in the text 
-       mutable long currentrow_y;
-   
        /** inserts a new row behind the specified row, increments
-        * the touched counters */
-       void InsertRow(Row * row, LyXParagraph * par,
-                      LyXParagraph::size_type pos) const;
+           the touched counters */
+       void insertRow(Row * row, Paragraph * par,
+                      Paragraph::size_type pos) const;
        /** removes the row and reset the touched counters */
-       void RemoveRow(Row * row) const;
+       void removeRow(Row * row) const;
 
        /** remove all following rows of the paragraph of the specified row. */
-       void RemoveParagraph(Row * row) const;
+       void removeParagraph(Row * row) const;
 
        /** insert the specified paragraph behind the specified row */
-       void InsertParagraph(LyXParagraph * par, Row * row) const;
+       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) const;
+       void appendParagraph(BufferView *, Row * row) const;
    
        ///
-       void BreakAgain(Row * row) const;
+       void breakAgain(BufferView *, Row * row) const;
        ///
-       void BreakAgainOneRow(Row * row);
+       void breakAgainOneRow(BufferView *, Row * row);
        /// Calculate and set the height of the row
-       void SetHeightOfRow(Row * row_ptr) const;
+       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,
+       void prepareToPrint(BufferView *, Row * row, float & x,
                            float & fill_separator, 
                            float & fill_hfill,
                            float & fill_label_hfill,
                            bool bidi = true) const;
+
        ///
-       void DeleteEmptyParagraphMechanism(LyXCursor const & old_cursor) const;
+       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) const;
+       void updateCounters(BufferView *, Row * row) const;
+private:
        ///
-       void SetCounter(LyXParagraph * par) const;
+       void setCounter(Buffer const *, Paragraph * par) const;
    
        /*
         * some low level functions
         */
        
        ///
-       int SingleWidth(LyXParagraph * par,
-                       LyXParagraph::size_type pos) const;
+       int singleWidth(BufferView *, Paragraph * par,
+                       Paragraph::size_type pos) const;
        ///
-       int SingleWidth(LyXParagraph * par,
-                       LyXParagraph::size_type pos, char c) const;
+       int singleWidth(BufferView *, Paragraph * par,
+                       Paragraph::size_type pos, char c) const;
        ///
-       void draw(Row const * row,
-                 LyXParagraph::size_type & pos,
-                 int offset, float & x);
+       void draw(BufferView *, Row const * row,
+                 Paragraph::size_type & pos,
+                 int offset, float & x, bool cleared);
 
        /// get the next breakpoint in a given paragraph
-       LyXParagraph::size_type NextBreakPoint(Row const * row,
+       Paragraph::size_type nextBreakPoint(BufferView *, Row const * row,
                                               int width) const;
        /// returns the minimum space a row needs on the screen in pixel
-       int Fill(Row const * row, int paperwidth) const;
+       int fill(BufferView *, Row * row, int workwidth) const;
        
        /** returns the minimum space a manual label needs on the
          screen in pixel */ 
-       int LabelFill(Row const * row) const;
+       int labelFill(BufferView *, Row const * row) const;
 
        ///
-       LyXParagraph::size_type BeginningOfMainBody(LyXParagraph * par) const;
+       Paragraph::size_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 const * row) const;
+       int leftMargin(BufferView *, Row const * row) const;
        ///
-       int RightMargin(Row const * row) const;
+       int rightMargin(Buffer const *, Row const * row) const;
        ///
-       int LabelEnd (Row const * row) const;
+       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 const * row) const;
+       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 const * row) const;
+       int numberOfHfills(Buffer const *, Row const * row) const;
    
        /// like NumberOfHfills, but only those in the manual label!
-       int NumberOfLabelHfills(Row const * row) const;
-
+       int numberOfLabelHfills(Buffer const *, Row const * row) const;
        /** returns true, if a expansion is needed. Rules are given by 
          LaTeX
          */
-       bool HfillExpansion(Row const * row_ptr,
-                           LyXParagraph::size_type pos) const;
+       bool hfillExpansion(Buffer const *, Row const * row_ptr,
+                           Paragraph::size_type pos) const;
+       /// 
+       LColor::color backgroundColor();
 
-       ///
-       mutable std::vector<LyXParagraph::size_type> log2vis_list;
 
        ///
-       mutable std::vector<LyXParagraph::size_type> vis2log_list;
+       mutable std::vector<Paragraph::size_type> log2vis_list;
 
        ///
-       mutable std::vector<LyXParagraph::size_type> bidi_levels;
+       mutable std::vector<Paragraph::size_type> vis2log_list;
 
        ///
-       mutable LyXParagraph::size_type bidi_start;
+       mutable std::vector<Paragraph::size_type> bidi_levels;
 
        ///
-       mutable bool bidi_same_direction;
+       mutable Paragraph::size_type bidi_start;
 
        ///
-       void ComputeBidiTables(Row *row) const;
-
-       /// Maps positions in the visual string to positions in logical string.
-       inline
-       LyXParagraph::size_type log2vis(LyXParagraph::size_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
-       LyXParagraph::size_type vis2log(LyXParagraph::size_type pos) const {
-               if (bidi_start == -1)
-                       return pos;
-               else
-                       return vis2log_list[pos-bidi_start];
-       }
-
-       inline
-       int bidi_level(LyXParagraph::size_type pos) const {
-               if (bidi_start == -1)
-                       return 0;
-               else
-                       return bidi_levels[pos-bidi_start];
-       }       
+       mutable Paragraph::size_type bidi_end;
 
        ///
-       unsigned char TransformChar(unsigned char c, Letter_Form form) const;
+       mutable bool bidi_same_direction;
 
        ///
-       unsigned char TransformChar(unsigned char c, LyXParagraph * par,
-                               LyXParagraph::size_type pos) const;
+       unsigned char transformChar(unsigned char c, Paragraph * par,
+                                   Paragraph::size_type pos) const;
 
        /** returns the paragraph position of the last character in the 
          specified row
          */
-       LyXParagraph::size_type RowLast(Row const * row) const;
+       Paragraph::size_type rowLast(Row const * row) const;
        ///
-       LyXParagraph::size_type RowLastPrintable(Row const * row) const;
+       Paragraph::size_type rowLastPrintable(Row const * row) const;
 
        ///
        void charInserted();
+public:
+       //
+       // special owner functions
+       ///
+       Paragraph * ownerParagraph() const;
+       //
+       Paragraph * ownerParagraph(Paragraph *) const;
+       // set it searching first for the right owner using the paragraph id
+       Paragraph * ownerParagraph(int id, Paragraph *) const;
 };
 
+
+/* 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 */
+inline
+Row * LyXText::getRowNearY(int & y) const
+{
+       // If possible we should optimize this method. (Lgb)
+       Row * tmprow = firstrow;
+       int tmpy = 0;
+       
+       while (tmprow->next() && tmpy + tmprow->height() <= y) {
+               tmpy += tmprow->height();
+               tmprow = tmprow->next();
+       }
+       
+       y = tmpy;   // return the real y
+       return tmprow;
+}
 #endif