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git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@865 a592a061-630c-0410-9148-cb99ea01b6c8
697 lines
19 KiB
C++
697 lines
19 KiB
C++
// -*- C++ -*-
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/* This file is part of
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* ======================================================
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*
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* LyX, The Document Processor
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*
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* Copyright 1995 Matthias Ettrich
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* Copyright 1995-2000 The LyX Team.
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*
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* ====================================================== */
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#ifndef LYXTEXT_H
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#define LYXTEXT_H
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#ifdef __GNUG__
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#pragma interface
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#endif
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#include "lyxfont.h"
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#include "undo.h"
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#include "lyxcursor.h"
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#include "lyxparagraph.h"
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#include "layout.h"
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class Buffer;
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class BufferParams;
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class Row;
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class BufferView;
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class InsetText;
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/**
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This class holds the mapping between buffer paragraphs and screen rows.
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*/
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class LyXText {
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public:
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///
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enum text_status {
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///
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UNCHANGED,
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///
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NEED_MORE_REFRESH,
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///
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NEED_VERY_LITTLE_REFRESH,
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///
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CHANGED_IN_DRAW
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};
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/// Constructor
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LyXText(BufferView *);
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LyXText(InsetText *);
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/// Destructor
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~LyXText();
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void init(BufferView *);
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///
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mutable int number_of_rows;
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///
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mutable long height;
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mutable unsigned int width;
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/// the current font settings
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mutable LyXFont current_font;
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/// the current font
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mutable LyXFont real_current_font;
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/// first visible pixel-row is set from LyXScreen!!!
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unsigned long first;
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///
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BufferView * bv_owner;
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///
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InsetText * inset_owner;
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///
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// void owner(BufferView *);
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///
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LyXFont GetFont(Buffer const *, LyXParagraph * par,
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LyXParagraph::size_type pos) const;
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///
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void SetCharFont(Buffer const *, LyXParagraph * par,
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LyXParagraph::size_type pos,
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LyXFont const & font);
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/// returns a pointer to the very first LyXParagraph
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LyXParagraph * FirstParagraph() const;
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/// what you expect when pressing <enter> at cursor position
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void BreakParagraph(BufferView *, char keep_layout = 0);
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/** set layout over selection and make a total rebreak of
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those paragraphs
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*/
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LyXParagraph * SetLayout(BufferView *, LyXCursor & actual_cursor,
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LyXCursor & selection_start,
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LyXCursor & selection_end,
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LyXTextClass::size_type layout);
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void SetLayout(BufferView *, LyXTextClass::size_type layout);
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/// used in setlayout
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void MakeFontEntriesLayoutSpecific(Buffer const *, LyXParagraph * par);
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/** increment depth over selection and make a total rebreak of those
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paragraphs
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*/
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void IncDepth(BufferView *);
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/** decrement depth over selection and make a total rebreak of those
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paragraphs */
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void DecDepth(BufferView *);
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/** Get the depth at current cursor position
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*/
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int GetDepth() const { return cursor.par()->GetDepth(); }
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/** set font over selection and make a total rebreak of those
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paragraphs.
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toggleall defaults to false.
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*/
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void SetFont(BufferView *, LyXFont const &, bool toggleall = false);
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/** deletes and inserts again all paragaphs between the cursor
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and the specified par. The Cursor is needed to set the refreshing
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parameters.
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This function is needed after SetLayout and SetFont etc.
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*/
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void RedoParagraphs(BufferView *, LyXCursor const & cursor,
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LyXParagraph const * end_par) const;
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///
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void RedoParagraph(BufferView *) const;
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///
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void ToggleFree(BufferView *, LyXFont const &, bool toggleall = false);
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/** recalculates the heights of all previous rows of the
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specified paragraph. needed, if the last characters font
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has changed.
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*/
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void RedoHeightOfParagraph(BufferView *, LyXCursor const & cursor);
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/** forces the redrawing of a paragraph. Needed when manipulating a
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right address box
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*/
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void RedoDrawingOfParagraph(BufferView *, LyXCursor const & cursor);
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/** insert a character, moves all the following breaks in the
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same Paragraph one to the right and make a little rebreak
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*/
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void InsertChar(BufferView *, char c);
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///
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void InsertInset(BufferView *, Inset * inset);
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/** Completes the insertion with a full rebreak.
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Returns true if something was broken. */
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bool FullRebreak(BufferView *);
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///
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LyXParagraph::footnote_flag GetFootnoteFlag(int row);
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///
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Row * need_break_row;
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///
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mutable long refresh_y;
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///
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int refresh_height;
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///
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int refresh_width;
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///
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int refresh_x;
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///
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mutable Row * refresh_row;
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///
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int refresh_pos;
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/** wether the screen needs a refresh,
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starting with refresh_y
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*/
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mutable text_status status;
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/** returns a pointer to the row near the specified y-coordinate
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(relative to the whole text). y is set to the real beginning
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of this row
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*/
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Row * GetRowNearY(long & y) const;
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/** returns the column near the specified x-coordinate of the row
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x is set to the real beginning of this column
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*/
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int GetColumnNearX(BufferView *, Row * row, int & x, bool & boundary) const;
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/** returns a pointer to a specified row. y is set to the beginning
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of the row
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*/
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Row * GetRow(LyXParagraph * par,
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LyXParagraph::size_type pos, long & y) const;
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/** returns the height of a default row, needed for scrollbar
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*/
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int DefaultHeight() const;
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/** The cursor.
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Later this variable has to be removed. There should be now internal
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cursor in a text (and thus not in a buffer). By keeping this it is
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(I think) impossible to have several views with the same buffer, but
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the cursor placed at different places.
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[later]
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Since the LyXText now has been moved from Buffer to BufferView
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it should not be absolutely needed to move the cursor...
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*/
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mutable LyXCursor cursor;
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/* the selection cursor */
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///
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mutable bool selection;
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///
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mutable bool mark_set;
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///
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mutable LyXCursor sel_cursor;
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///
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LyXCursor sel_start_cursor;
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///
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mutable LyXCursor sel_end_cursor;
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/// needed for the toggling
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LyXCursor last_sel_cursor;
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///
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LyXCursor toggle_cursor;
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///
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LyXCursor toggle_end_cursor;
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/// need the selection cursor:
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void SetSelection();
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///
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void ClearSelection() const;
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///
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string selectionAsString(Buffer const *) const;
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/// just selects the word the cursor is in
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void SelectWord(BufferView *);
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/** 'selects" the next word, where the cursor is not in
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and returns this word as string. THe cursor will be moved
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to the beginning of this word.
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With SelectSelectedWord can this be highlighted really
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*/
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char * SelectNextWord(BufferView *, float & value);
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///
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void SelectSelectedWord(BufferView *);
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///
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void SetCursor(BufferView *, LyXParagraph * par,
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LyXParagraph::size_type pos,
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bool setfont = true,
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bool boundary = false) const;
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void SetCursor(BufferView *, LyXCursor &, LyXParagraph * par,
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LyXParagraph::size_type pos,
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bool boundary = false) const;
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///
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void SetCursorIntern(BufferView *, LyXParagraph * par,
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LyXParagraph::size_type pos,
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bool setfont = true,
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bool boundary = false) const;
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///
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void SetCurrentFont(BufferView *) const;
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///
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bool IsBoundary(Buffer const *, LyXParagraph * par,
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LyXParagraph::size_type pos) const;
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///
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bool IsBoundary(Buffer const *, LyXParagraph * par,
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LyXParagraph::size_type pos,
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LyXFont const & font) const;
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///
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void SetCursorFromCoordinates(BufferView *, int x, long y) const;
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void SetCursorFromCoordinates(BufferView *, LyXCursor &, int x, long y) const;
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///
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void CursorUp(BufferView *) const;
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///
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void CursorDown(BufferView *) const;
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///
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void CursorLeft(BufferView *, bool internal = true) const;
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///
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void CursorRight(BufferView *, bool internal = true) const;
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///
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void CursorLeftIntern(BufferView *, bool internal = true) const;
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///
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void CursorRightIntern(BufferView *, bool internal = true) const;
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///
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void CursorLeftOneWord(BufferView *) const;
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///
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void CursorRightOneWord(BufferView *) const;
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///
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void CursorUpParagraph(BufferView *) const;
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///
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void CursorDownParagraph(BufferView *) const;
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///
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void CursorHome(BufferView *) const;
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///
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void CursorEnd(BufferView *) const;
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///
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void CursorTab(BufferView *) const;
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///
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void CursorTop(BufferView *) const;
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///
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void CursorBottom(BufferView *) const;
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///
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void Delete(BufferView *);
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///
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void Backspace(BufferView *);
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///
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void DeleteWordForward(BufferView *);
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///
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void DeleteWordBackward(BufferView *);
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///
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void DeleteLineForward(BufferView *);
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///
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bool SelectWordWhenUnderCursor(BufferView *);
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enum TextCase {
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text_lowercase = 0,
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text_capitalization = 1,
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text_uppercase = 2
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};
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/// Change the case of the word at cursor position.
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void ChangeWordCase(BufferView *, TextCase action);
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/** returns a printed row in a pixmap. The y value is needed to
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decide, wether it is selected text or not. This is a strange
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solution but faster.
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*/
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void GetVisibleRow(BufferView *, int y_offset, int x_offset,
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Row * row_ptr, long y, bool cleared=false);
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/* footnotes: */
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///
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void ToggleFootnote(BufferView *);
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///
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void OpenStuff(BufferView *);
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///
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void OpenFootnotes();
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///
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void OpenFootnote(BufferView *);
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///
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void CloseFootnotes();
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///
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void CloseFootnote(BufferView *);
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/** turn the selection into a new environment. If there is no
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selection, create an empty environment
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*/
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void InsertFootnoteEnvironment(BufferView *,
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LyXParagraph::footnote_kind kind);
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///
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void MeltFootnoteEnvironment(BufferView *);
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///
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void CutSelection(BufferView *, bool = true);
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///
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void CopySelection(BufferView *);
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///
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void PasteSelection(BufferView *);
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///
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void copyEnvironmentType();
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///
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void pasteEnvironmentType(BufferView *);
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///
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void InsertFootnote();
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///
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void InsertMarginpar();
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///
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void InsertFigure();
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///
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void InsertTabular();
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/** the DTP switches for paragraphs. LyX will store the top settings
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always in the first physical paragraph, the bottom settings in the
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last. When a paragraph is broken, the top settings rest, the bottom
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settings are given to the new one. So I can make shure, they do not
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duplicate themself (and you cannnot make dirty things with them! )
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*/
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void SetParagraph(BufferView *,
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bool line_top, bool line_bottom,
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bool pagebreak_top, bool pagebreak_bottom,
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VSpace const & space_top,
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VSpace const & space_bottom,
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LyXAlignment align,
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string labelwidthstring,
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bool noindent);
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void SetParagraphExtraOpt(BufferView *, int type,
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char const * width,
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char const * widthp,
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int alignment, bool hfill,
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bool start_minipage);
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/* these things are for search and replace */
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/** returns true if the specified string is at the specified
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position
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*/
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bool IsStringInText(LyXParagraph * par,
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LyXParagraph::size_type pos,
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char const * str) const;
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/** sets the selection over the number of characters of string,
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no check!!
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*/
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void SetSelectionOverString(BufferView *, char const * str);
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/** simple replacing. The font of the first selected character
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is used
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*/
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void ReplaceSelectionWithString(BufferView *, char const * str);
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/** if the string can be found: return true and set the cursor to
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the new position */
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bool SearchForward(BufferView *, char const * str) const;
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bool SearchBackward(BufferView *, char const * str) const;
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/// needed to insert the selection
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void InsertStringA(BufferView *, string const & str);
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/// needed to insert the selection
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void InsertStringB(BufferView *, string const & str);
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/// usefull when texing from within LyX
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bool GotoNextError(BufferView *) const;
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/// just another feature :)
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bool GotoNextNote(BufferView *) const;
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/* for the greater insets */
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/// returns false if inset wasn't found
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bool UpdateInset(BufferView *, Inset *);
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///
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void CheckParagraph(BufferView *, LyXParagraph * par,
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LyXParagraph::size_type pos);
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///
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int NumberOfCell(LyXParagraph * par,
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LyXParagraph::size_type pos) const;
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/* table stuff -- begin*/
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/** all table features of the text-class are put together in
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this function. Possible values of feature are defined in table.h
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*/
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void TableFeatures(BufferView *, int feature, string const & val) const;
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///
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void TableFeatures(BufferView *, int feature) const;
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/** pos points at the beginning of the next cell (if there is one)
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*/
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int WidthOfCell(BufferView *, LyXParagraph * par,
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LyXParagraph::size_type & pos) const;
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///
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void CheckParagraphInTable(BufferView *, LyXParagraph * par,
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LyXParagraph::size_type pos);
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///
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void InsertCharInTable(BufferView *, char c);
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///
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void BackspaceInTable(BufferView *);
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///
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bool HitInTable(BufferView *, Row * row, int x) const;
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///
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bool MouseHitInTable(BufferView *, int x, long y) const;
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/* table stuff -- end*/
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///
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LyXParagraph * GetParFromID(int id);
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// undo functions
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/// returns false if no undo possible
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bool TextUndo(BufferView *);
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/// returns false if no redo possible
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bool TextRedo(BufferView *);
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/// used by TextUndo/TextRedo
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bool TextHandleUndo(BufferView *, Undo * undo);
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/// makes sure the next operation will be stored
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void FinishUndo();
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/// this is dangerous and for internal use only
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void FreezeUndo();
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/// this is dangerous and for internal use only
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void UnFreezeUndo();
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/// the flag used by FinishUndo();
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mutable bool undo_finished;
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/// a flag
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bool undo_frozen;
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///
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void SetUndo(Buffer *, Undo::undo_kind kind,
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LyXParagraph const * before,
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LyXParagraph const * end) const;
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///
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void SetRedo(Buffer *, Undo::undo_kind kind,
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LyXParagraph const * before,
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LyXParagraph const * end);
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///
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Undo * CreateUndo(Buffer *, Undo::undo_kind kind,
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LyXParagraph const * before,
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LyXParagraph const * end) const;
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/// for external use in lyx_cb.C
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void SetCursorParUndo(Buffer *);
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///
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void RemoveTableRow(LyXCursor & cursor) const;
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///
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bool IsEmptyTableCell() const;
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///
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void toggleAppendix(BufferView *);
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///
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int workWidth(BufferView *) const;
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///
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// Buffer * buffer() const;
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///
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void ComputeBidiTables(Buffer const *, Row * row) const;
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/// Maps positions in the visual string to positions in logical string.
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inline
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LyXParagraph::size_type log2vis(LyXParagraph::size_type pos) const {
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if (bidi_start == -1)
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return pos;
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else
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return log2vis_list[pos-bidi_start];
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}
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/// Maps positions in the logical string to positions in visual string.
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inline
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LyXParagraph::size_type vis2log(LyXParagraph::size_type pos) const {
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if (bidi_start == -1)
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return pos;
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else
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return vis2log_list[pos-bidi_start];
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}
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inline
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int bidi_level(LyXParagraph::size_type pos) const {
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if (bidi_start == -1)
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return 0;
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else
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return bidi_levels[pos-bidi_start];
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}
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inline
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bool bidi_InRange(LyXParagraph::size_type pos) const {
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return bidi_start == -1 ||
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(bidi_start <= pos && pos <= bidi_end);
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}
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private:
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///
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void init();
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///
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mutable Row * firstrow;
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///
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mutable Row * lastrow;
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/** Copybuffer for copy environment type
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Asger has learned that this should be a buffer-property instead
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Lgb has learned that 'char' is a lousy type for non-characters
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*/
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LyXTextClass::size_type copylayouttype;
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/** inserts a new row behind the specified row, increments
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* the touched counters */
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void InsertRow(Row * row, LyXParagraph * par,
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LyXParagraph::size_type pos) const;
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/** removes the row and reset the touched counters */
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void RemoveRow(Row * row) const;
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/** remove all following rows of the paragraph of the specified row. */
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void RemoveParagraph(Row * row) const;
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/** insert the specified paragraph behind the specified row */
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void InsertParagraph(BufferView *, LyXParagraph * par, Row * row) const;
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/** appends the implizit specified paragraph behind the specified row,
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|
* start at the implizit given position */
|
|
void AppendParagraph(BufferView *, Row * row) const;
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|
|
|
///
|
|
void BreakAgain(BufferView *, Row * row) const;
|
|
///
|
|
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(BufferView *, Row * row, float & x,
|
|
float & fill_separator,
|
|
float & fill_hfill,
|
|
float & fill_label_hfill,
|
|
bool bidi = true) const;
|
|
|
|
///
|
|
void DeleteEmptyParagraphMechanism(BufferView *,
|
|
LyXCursor const & old_cursor) const;
|
|
|
|
/** Updates all counters starting BEHIND the row. Changed paragraphs
|
|
* with a dynamic left margin will be rebroken. */
|
|
void UpdateCounters(BufferView *, Row * row) const;
|
|
///
|
|
void SetCounter(Buffer const *, LyXParagraph * par) const;
|
|
|
|
/*
|
|
* some low level functions
|
|
*/
|
|
|
|
///
|
|
int SingleWidth(BufferView *, LyXParagraph * par,
|
|
LyXParagraph::size_type pos) const;
|
|
///
|
|
int SingleWidth(BufferView *, LyXParagraph * par,
|
|
LyXParagraph::size_type pos, char c) const;
|
|
///
|
|
void draw(BufferView *, Row const * row,
|
|
LyXParagraph::size_type & pos,
|
|
int offset, float & x, bool cleared);
|
|
|
|
/// get the next breakpoint in a given paragraph
|
|
LyXParagraph::size_type NextBreakPoint(BufferView *, Row const * row,
|
|
int width) const;
|
|
/// returns the minimum space a row needs on the screen in pixel
|
|
int Fill(BufferView *, Row * row, int workwidth) const;
|
|
|
|
/** returns the minimum space a manual label needs on the
|
|
screen in pixel */
|
|
int LabelFill(BufferView *, Row const * row) const;
|
|
|
|
///
|
|
LyXParagraph::size_type
|
|
BeginningOfMainBody(Buffer const *, LyXParagraph 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(BufferView *, Row const * row) const;
|
|
///
|
|
int RightMargin(Buffer const *, 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(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(Buffer const *, Row const * row) const;
|
|
|
|
/// like NumberOfHfills, but only those in the manual label!
|
|
int NumberOfLabelHfills(Buffer const *, Row const * row) const;
|
|
/** returns true, if a expansion is needed. Rules are given by
|
|
LaTeX
|
|
*/
|
|
bool HfillExpansion(Buffer const *, Row const * row_ptr,
|
|
LyXParagraph::size_type pos) const;
|
|
|
|
|
|
///
|
|
mutable std::vector<LyXParagraph::size_type> log2vis_list;
|
|
|
|
///
|
|
mutable std::vector<LyXParagraph::size_type> vis2log_list;
|
|
|
|
///
|
|
mutable std::vector<LyXParagraph::size_type> bidi_levels;
|
|
|
|
///
|
|
mutable LyXParagraph::size_type bidi_start;
|
|
|
|
///
|
|
mutable LyXParagraph::size_type bidi_end;
|
|
|
|
///
|
|
mutable bool bidi_same_direction;
|
|
|
|
///
|
|
unsigned char TransformChar(unsigned char c, LyXParagraph * par,
|
|
LyXParagraph::size_type pos) const;
|
|
|
|
/** returns the paragraph position of the last character in the
|
|
specified row
|
|
*/
|
|
LyXParagraph::size_type RowLast(Row const * row) const;
|
|
///
|
|
LyXParagraph::size_type RowLastPrintable(Row const * row) const;
|
|
|
|
///
|
|
void charInserted();
|
|
///
|
|
/// special owner functions
|
|
///
|
|
LyXParagraph * OwnerParagraph() const;
|
|
///
|
|
LyXParagraph * OwnerParagraph(LyXParagraph *) const;
|
|
///
|
|
};
|
|
|
|
#endif
|