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https://git.lyx.org/repos/lyx.git
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da7583ab70
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@2897 a592a061-630c-0410-9148-cb99ea01b6c8
692 lines
19 KiB
C++
692 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 1995-2001 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 "lyxcursor.h"
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#include "paragraph.h"
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#include "layout.h"
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#include "lyxrow.h"
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#include "vspace.h"
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#include "Spacing.h"
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#include "LColor.h"
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class Buffer;
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class BufferParams;
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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 = 0,
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///
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CHANGED_IN_DRAW = 1,
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///
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NEED_VERY_LITTLE_REFRESH = 2,
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///
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NEED_MORE_REFRESH = 3
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};
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///
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enum word_location {
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// the word around the cursor, only if the cursor is
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//not at a boundary
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WHOLE_WORD_STRICT,
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// the word around the cursor
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WHOLE_WORD,
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/// the word begining from the cursor position
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PARTIAL_WORD,
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/// the word around the cursor or before the cursor
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PREVIOUS_WORD,
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/// the next word (not yet used)
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NEXT_WORD
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};
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/// Constructor
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LyXText(BufferView *);
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///
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LyXText(InsetText *);
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/// Destructor
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~LyXText();
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void init(BufferView *, bool reinit = false);
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///
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mutable int number_of_rows;
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///
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mutable int height;
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///
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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 is wrong here for text-insets!
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int 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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UpdatableInset * the_locking_inset;
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///
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int getRealCursorX(BufferView *) const;
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///
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LyXFont const getFont(Buffer const *, Paragraph * par,
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Paragraph::size_type pos) const;
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///
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LyXFont const getLayoutFont(Buffer const *, Paragraph * par) const;
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///
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LyXFont const getLabelFont(Buffer const *, Paragraph * par) const;
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///
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void setCharFont(Buffer const *, Paragraph * par,
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Paragraph::size_type pos, LyXFont const & font);
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void setCharFont(BufferView *, Paragraph * par,
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Paragraph::size_type pos,
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LyXFont const & font, bool toggleall);
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/// returns a pointer to the very first Paragraph
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Paragraph * 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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Paragraph * 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 *, Paragraph * 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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Paragraph 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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///
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string getStringToIndex(BufferView *);
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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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mutable Row * need_break_row;
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///
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mutable int 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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Paragraph::size_type refresh_pos;
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/// give and set the LyXText status
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text_status status() const;
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///
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void status(BufferView *, text_status) const;
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private:
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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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public:
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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(int & 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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Paragraph::size_type getColumnNearX(BufferView *, Row * row,
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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(Paragraph * par,
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Paragraph::size_type pos, int & 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; // actual cursor position
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/** The structure that keeps track of the selections set. */
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struct Selection {
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Selection()
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: set_(false), mark_(false)
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{}
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bool set() const {
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return set_;
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}
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void set(bool s) {
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set_ = s;
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}
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bool mark() const {
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return mark_;
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}
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void mark(bool m) {
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mark_ = m;
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}
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LyXCursor cursor; // temporary cursor to hold a cursor position
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// until setSelection is called!
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LyXCursor start; // start of a REAL selection
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LyXCursor end; // end of a REAL selection
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private:
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bool set_; // former selection
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bool mark_; // former mark_set
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};
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mutable Selection selection;
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/// needed for the toggling (cursor position on last selection made)
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mutable LyXCursor last_sel_cursor;
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/// needed for toggling the selection in screen.C
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mutable LyXCursor toggle_cursor;
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/// needed for toggling the selection in screen.C
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mutable LyXCursor toggle_end_cursor;
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/// need the selection cursor:
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void setSelection(BufferView *);
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///
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void clearSelection() const;
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///
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string const selectionAsString(Buffer const *, bool label) const;
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/// select the word we need depending on word_location
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void getWord(LyXCursor & from, LyXCursor & to,
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word_location const) const;
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/// just selects the word the cursor is in
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void selectWord(BufferView *, word_location const);
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/// returns the inset at cursor (if it exists), 0 otherwise
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Inset * getInset() const;
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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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string const selectNextWordToSpellcheck(BufferView *, float & value) const;
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///
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void selectSelectedWord(BufferView *);
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///
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void setCursor(BufferView *, Paragraph * par,
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Paragraph::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 setCursor(BufferView *, LyXCursor &, Paragraph * par,
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Paragraph::size_type pos,
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bool boundary = false) const;
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///
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void setCursorIntern(BufferView *, Paragraph * par,
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Paragraph::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 *, Paragraph * par,
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Paragraph::size_type pos) const;
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///
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bool isBoundary(Buffer const *, Paragraph * par,
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Paragraph::size_type pos,
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LyXFont const & font) const;
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///
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void setCursorFromCoordinates(BufferView *, int x, int y) const;
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///
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void setCursorFromCoordinates(BufferView *, LyXCursor &,
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int x, int 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 cursorLeftOneWord(BufferView *) const;
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///
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void cursorLeftOneWord(LyXCursor &) 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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word_location const);
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///
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enum TextCase {
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///
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text_lowercase = 0,
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///
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text_capitalization = 1,
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///
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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 changeCase(BufferView *, TextCase action);
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///
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void changeRegionCase(BufferView * bview,
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LyXCursor const & from,
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LyXCursor const & to,
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LyXText::TextCase action);
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///
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void transposeChars(BufferView &);
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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, int y, bool cleared=false);
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///
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void toggleInset(BufferView *);
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///
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void cutSelection(BufferView *, bool doclear = true, bool realcut = 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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/** 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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Spacing const & spacing,
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LyXAlignment align,
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string labelwidthstring,
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bool noindent);
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/* these things are for search and replace */
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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 *, string 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 *, string const & str);
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/// needed to insert the selection
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void insertStringAsLines(BufferView *, string const & str);
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/// needed to insert the selection
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void insertStringAsParagraphs(BufferView *, string const & str);
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/// Find next inset of some specified type.
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bool gotoNextInset(BufferView *, std::vector<Inset::Code> const & codes,
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string const & contents = string()) const;
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///
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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 *, Paragraph * par,
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Paragraph::size_type pos);
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///
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int numberOfCell(Paragraph * par,
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Paragraph::size_type pos) const;
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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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int workWidth(BufferView *, Inset * inset) 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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Paragraph::size_type log2vis(Paragraph::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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Paragraph::size_type vis2log(Paragraph::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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///
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inline
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Paragraph::size_type bidi_level(Paragraph::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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///
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inline
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bool bidi_InRange(Paragraph::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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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, Paragraph * par,
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Paragraph::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 *,
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Paragraph * 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 */
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void appendParagraph(BufferView *, Row * row) const;
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///
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void breakAgain(BufferView *, Row * row) const;
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///
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void breakAgainOneRow(BufferView *, Row * row);
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/// Calculate and set the height of the row
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void setHeightOfRow(BufferView *, Row * row_ptr) const;
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/** this calculates the specified parameters. needed when setting
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* the cursor and when creating a visible row */
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void prepareToPrint(BufferView *, Row * row, float & x,
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float & fill_separator,
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float & fill_hfill,
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float & fill_label_hfill,
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bool bidi = true) const;
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// fix the cursor `cur' after a characters has been deleted at `where'
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// position. Called by deleteEmptyParagraphMechanism
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void fixCursorAfterDelete(BufferView * bview,
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LyXCursor & cur,
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LyXCursor const & where) const;
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///
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void deleteEmptyParagraphMechanism(BufferView *,
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LyXCursor const & old_cursor) const;
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public:
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/** Updates all counters starting BEHIND the row. Changed paragraphs
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* with a dynamic left margin will be rebroken. */
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void updateCounters(BufferView *, Row * row) const;
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private:
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///
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void setCounter(Buffer const *, Paragraph * par) const;
|
|
|
|
/*
|
|
* some low level functions
|
|
*/
|
|
|
|
///
|
|
int singleWidth(BufferView *, Paragraph * par,
|
|
Paragraph::size_type pos) const;
|
|
///
|
|
int singleWidth(BufferView *, Paragraph * par,
|
|
Paragraph::size_type pos, char c) const;
|
|
///
|
|
void draw(BufferView *, Row const * row,
|
|
Paragraph::size_type & pos,
|
|
int offset, float & x, bool cleared);
|
|
|
|
/// get the next breakpoint in a given paragraph
|
|
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(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;
|
|
|
|
///
|
|
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(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,
|
|
Paragraph::size_type pos) const;
|
|
///
|
|
LColor::color backgroundColor();
|
|
|
|
|
|
///
|
|
mutable std::vector<Paragraph::size_type> log2vis_list;
|
|
|
|
///
|
|
mutable std::vector<Paragraph::size_type> vis2log_list;
|
|
|
|
///
|
|
mutable std::vector<Paragraph::size_type> bidi_levels;
|
|
|
|
///
|
|
mutable Paragraph::size_type bidi_start;
|
|
|
|
///
|
|
mutable Paragraph::size_type bidi_end;
|
|
|
|
///
|
|
mutable bool bidi_same_direction;
|
|
|
|
///
|
|
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
|
|
*/
|
|
Paragraph::size_type rowLast(Row const * row) const;
|
|
///
|
|
Paragraph::size_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;
|
|
};
|
|
|
|
|
|
/* 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
|