2 /* This file is part of
3 * ======================================================
5 * LyX, The Document Processor
7 * Copyright 1995 Matthias Ettrich
8 * Copyright 1995-2000 The LyX Team.
10 * ====================================================== */
21 #include "lyxcursor.h"
22 #include "lyxparagraph.h"
32 This class holds the mapping between buffer paragraphs and screen rows.
43 NEED_VERY_LITTLE_REFRESH
54 LyXText(BufferView *, int paperwidth, Buffer *);
60 mutable int number_of_rows;
63 /// the current font settings
64 mutable LyXFont current_font;
66 mutable LyXFont real_current_font;
69 void owner(BufferView *);
72 LyXFont GetFont(LyXParagraph * par,
73 LyXParagraph::size_type pos) const;
75 void SetCharFont(LyXParagraph * par,
76 LyXParagraph::size_type pos,
77 LyXFont const & font);
78 /// returns a pointer to the very first LyXParagraph
79 LyXParagraph * FirstParagraph() const;
81 /// what you expect when pressing <enter> at cursor position
82 void BreakParagraph(char keep_layout = 0);
84 /** set layout over selection and make a total rebreak of
87 LyXParagraph * SetLayout(LyXCursor & actual_cursor,
88 LyXCursor & selection_start,
89 LyXCursor & selection_end,
90 LyXTextClass::size_type layout);
91 void SetLayout(LyXTextClass::size_type layout);
94 void MakeFontEntriesLayoutSpecific(LyXParagraph * par);
96 /** increment depth over selection and make a total rebreak of those
101 /** decrement depth over selection and make a total rebreak of those
105 /** Get the depth at current cursor position
107 int GetDepth() const { return cursor.par()->GetDepth(); }
109 /** set font over selection and make a total rebreak of those
111 toggleall defaults to false.
113 void SetFont(LyXFont const & font, bool toggleall = false);
115 /** deletes and inserts again all paragaphs between the cursor
116 and the specified par. The Cursor is needed to set the refreshing
118 This function is needed after SetLayout and SetFont etc.
120 void RedoParagraphs(LyXCursor const & cursor,
121 LyXParagraph const * end_par) const;
123 void RedoParagraph() const;
126 void ToggleFree(LyXFont const & font, bool toggleall = false);
128 /** recalculates the heights of all previous rows of the
129 specified paragraph. needed, if the last characters font
132 void RedoHeightOfParagraph(LyXCursor const & cursor);
134 /** forces the redrawing of a paragraph. Needed when manipulating a
137 void RedoDrawingOfParagraph(LyXCursor const & cursor);
139 /** insert a character, moves all the following breaks in the
140 same Paragraph one to the right and make a little rebreak
142 void InsertChar(char c);
144 void InsertInset(Inset * inset);
146 /** Completes the insertion with a full rebreak.
147 Returns true if something was broken. */
151 LyXParagraph::footnote_flag GetFootnoteFlag(int row);
153 Row * need_break_row;
155 mutable long refresh_y;
163 mutable Row * refresh_row;
167 /** wether the screen needs a refresh,
168 starting with refresh_y
170 mutable text_status status;
172 /** returns a pointer to the row near the specified y-coordinate
173 (relative to the whole text). y is set to the real beginning
176 Row * GetRowNearY(long & y) const;
178 /** returns the column near the specified x-coordinate of the row
179 x is set to the real beginning of this column
181 int GetColumnNearX(Row * row, int & x, bool & boundary) const;
183 /** returns a pointer to a specified row. y is set to the beginning
186 Row * GetRow(LyXParagraph * par,
187 LyXParagraph::size_type pos, long & y) const;
188 /** returns the height of a default row, needed for scrollbar
190 int DefaultHeight() const;
193 Later this variable has to be removed. There should be now internal
194 cursor in a text (and thus not in a buffer). By keeping this it is
195 (I think) impossible to have several views with the same buffer, but
196 the cursor placed at different places.
198 Since the LyXText now has been moved from Buffer to BufferView
199 it should not be absolutely needed to move the cursor...
201 mutable LyXCursor cursor;
203 /* the selection cursor */
205 mutable bool selection;
207 mutable bool mark_set;
210 mutable LyXCursor sel_cursor;
212 LyXCursor sel_start_cursor;
214 mutable LyXCursor sel_end_cursor;
215 /// needed for the toggling
216 LyXCursor last_sel_cursor;
218 LyXCursor toggle_cursor;
220 LyXCursor toggle_end_cursor;
222 /// need the selection cursor:
225 void ClearSelection() const;
227 string selectionAsString() const;
229 /// just selects the word the cursor is in
232 /** 'selects" the next word, where the cursor is not in
233 and returns this word as string. THe cursor will be moved
234 to the beginning of this word.
235 With SelectSelectedWord can this be highlighted really
237 char * SelectNextWord(float & value);
239 void SelectSelectedWord();
241 void SetCursor(LyXParagraph * par,
242 LyXParagraph::size_type pos,
244 bool boundary = false) const;
246 void SetCursor(LyXCursor &, LyXParagraph * par,
247 LyXParagraph::size_type pos,
248 bool boundary = false) const;
250 void SetCursorIntern(LyXParagraph * par,
251 LyXParagraph::size_type pos,
253 bool boundary = false) const;
255 void SetCurrentFont() const;
258 bool IsBoundary(LyXParagraph * par,
259 LyXParagraph::size_type pos) const;
261 bool IsBoundary(LyXParagraph * par,
262 LyXParagraph::size_type pos,
263 LyXFont const & font) const;
266 void SetCursorFromCoordinates(int x, long y) const;
267 void SetCursorFromCoordinates(LyXCursor &, int x, long y) const;
269 void CursorUp() const;
271 void CursorDown() const;
273 void CursorLeft(bool internal = true) const;
275 void CursorRight(bool internal = true) const;
277 void CursorLeftIntern(bool internal = true) const;
279 void CursorRightIntern(bool internal = true) const;
281 void CursorLeftOneWord() const;
283 void CursorRightOneWord() const;
285 void CursorUpParagraph() const;
287 void CursorDownParagraph() const;
289 void CursorHome() const;
291 void CursorEnd() const;
293 void CursorTab() const;
295 void CursorTop() const;
297 void CursorBottom() const;
303 void DeleteWordForward();
305 void DeleteWordBackward();
307 void DeleteLineForward();
309 bool SelectWordWhenUnderCursor();
313 text_capitalization = 1,
316 /// Change the case of the word at cursor position.
317 void ChangeWordCase(TextCase action);
319 /** returns a printed row in a pixmap. The y value is needed to
320 decide, wether it is selected text or not. This is a strange
323 void GetVisibleRow(int offset, Row * row_ptr, long y);
327 void ToggleFootnote();
331 void OpenFootnotes();
335 void CloseFootnotes();
337 void CloseFootnote();
339 /** turn the selection into a new environment. If there is no
340 selection, create an empty environment
342 void InsertFootnoteEnvironment(LyXParagraph::footnote_kind kind);
344 void MeltFootnoteEnvironment();
346 void CutSelection(bool = true);
348 void CopySelection();
350 void PasteSelection();
352 void copyEnvironmentType();
354 void pasteEnvironmentType();
356 void InsertFootnote();
358 void InsertMarginpar();
362 void InsertTabular();
364 /** the DTP switches for paragraphs. LyX will store the top settings
365 always in the first physical paragraph, the bottom settings in the
366 last. When a paragraph is broken, the top settings rest, the bottom
367 settings are given to the new one. So I can make shure, they do not
368 duplicate themself (and you cannnot make dirty things with them! )
370 void SetParagraph(bool line_top, bool line_bottom,
371 bool pagebreak_top, bool pagebreak_bottom,
372 VSpace const & space_top,
373 VSpace const & space_bottom,
375 string labelwidthstring,
377 void SetParagraphExtraOpt(int type,
380 int alignment, bool hfill,
381 bool start_minipage);
383 /* these things are for search and replace */
385 /** returns true if the specified string is at the specified
388 bool IsStringInText(LyXParagraph * par,
389 LyXParagraph::size_type pos,
390 char const * str) const;
391 /** sets the selection over the number of characters of string,
394 void SetSelectionOverString(char const * str);
396 /** simple replacing. The font of the first selected character
399 void ReplaceSelectionWithString(char const * str);
401 /** if the string can be found: return true and set the cursor to
403 bool SearchForward(char const * str) const;
404 bool SearchBackward(char const * str) const;
406 /// needed to insert the selection
407 void InsertStringA(string const & str);
408 /// needed to insert the selection
409 void InsertStringB(string const & str);
411 /// usefull when texing from within LyX
412 bool GotoNextError() const;
414 /// just another feature :)
415 bool GotoNextNote() const;
417 /* for the greater insets */
419 /// returns 0 if inset wasn't found
420 int UpdateInset(Inset * inset);
422 void CheckParagraph(LyXParagraph * par,
423 LyXParagraph::size_type pos);
425 int NumberOfCell(LyXParagraph * par,
426 LyXParagraph::size_type pos) const;
427 /* table stuff -- begin*/
429 /** all table features of the text-class are put together in
430 this function. Possible values of feature are defined in table.h
432 void TableFeatures(int feature, string const & val) const;
434 void TableFeatures(int feature) const;
436 /** pos points at the beginning of the next cell (if there is one)
438 int WidthOfCell(LyXParagraph * par,
439 LyXParagraph::size_type & pos) const;
441 void CheckParagraphInTable(LyXParagraph * par,
442 LyXParagraph::size_type pos);
444 void InsertCharInTable(char c);
446 void BackspaceInTable();
448 bool HitInTable(Row * row, int x) const;
450 bool MouseHitInTable(int x, long y) const;
451 /* table stuff -- end*/
453 LyXParagraph * GetParFromID(int id);
456 /// returns false if no undo possible
458 /// returns false if no redo possible
460 /// used by TextUndo/TextRedo
461 bool TextHandleUndo(Undo * undo);
462 /// makes sure the next operation will be stored
464 /// this is dangerous and for internal use only
466 /// this is dangerous and for internal use only
468 /// the flag used by FinishUndo();
469 mutable bool undo_finished;
473 void SetUndo(Undo::undo_kind kind,
474 LyXParagraph const * before,
475 LyXParagraph const * end) const;
477 void SetRedo(Undo::undo_kind kind,
478 LyXParagraph const * before,
479 LyXParagraph const * end);
481 Undo * CreateUndo(Undo::undo_kind kind,
482 LyXParagraph const * before,
483 LyXParagraph const * end) const;
484 /// for external use in lyx_cb.C
485 void SetCursorParUndo();
487 void RemoveTableRow(LyXCursor & cursor) const;
489 bool IsEmptyTableCell() const;
491 void toggleAppendix();
493 unsigned short paperWidth() const { return paperwidth; }
495 Buffer const * buffer() const {
499 void ComputeBidiTables(Row * row) const;
501 /// Maps positions in the visual string to positions in logical string.
503 LyXParagraph::size_type log2vis(LyXParagraph::size_type pos) const {
504 if (bidi_start == -1)
507 return log2vis_list[pos-bidi_start];
510 /// Maps positions in the logical string to positions in visual string.
512 LyXParagraph::size_type vis2log(LyXParagraph::size_type pos) const {
513 if (bidi_start == -1)
516 return vis2log_list[pos-bidi_start];
520 int bidi_level(LyXParagraph::size_type pos) const {
521 if (bidi_start == -1)
524 return bidi_levels[pos-bidi_start];
528 bool bidi_InRange(LyXParagraph::size_type pos) const {
529 return bidi_start == -1 ||
530 (bidi_start <= pos && pos <= bidi_end);
538 /// width of the paper
539 unsigned short paperwidth;
542 mutable Row * firstrow;
544 mutable Row * lastrow;
546 /** Copybuffer for copy environment type
547 Asger has learned that this should be a buffer-property instead
548 Lgb has learned that 'char' is a lousy type for non-characters
550 LyXTextClass::size_type copylayouttype;
552 /** inserts a new row behind the specified row, increments
553 * the touched counters */
554 void InsertRow(Row * row, LyXParagraph * par,
555 LyXParagraph::size_type pos) const;
556 /** removes the row and reset the touched counters */
557 void RemoveRow(Row * row) const;
559 /** remove all following rows of the paragraph of the specified row. */
560 void RemoveParagraph(Row * row) const;
562 /** insert the specified paragraph behind the specified row */
563 void InsertParagraph(LyXParagraph * par, Row * row) const;
565 /** appends the implizit specified paragraph behind the specified row,
566 * start at the implizit given position */
567 void AppendParagraph(Row * row) const;
570 void BreakAgain(Row * row) const;
572 void BreakAgainOneRow(Row * row);
573 /// Calculate and set the height of the row
574 void SetHeightOfRow(Row * row_ptr) const;
576 /** this calculates the specified parameters. needed when setting
577 * the cursor and when creating a visible row */
578 void PrepareToPrint(Row * row, float & x,
579 float & fill_separator,
581 float & fill_label_hfill,
582 bool bidi = true) const;
585 void DeleteEmptyParagraphMechanism(LyXCursor const & old_cursor) const;
587 /** Updates all counters starting BEHIND the row. Changed paragraphs
588 * with a dynamic left margin will be rebroken. */
589 void UpdateCounters(Row * row) const;
591 void SetCounter(LyXParagraph * par) const;
594 * some low level functions
598 int SingleWidth(LyXParagraph * par,
599 LyXParagraph::size_type pos) const;
601 int SingleWidth(LyXParagraph * par,
602 LyXParagraph::size_type pos, char c) const;
604 void draw(Row const * row,
605 LyXParagraph::size_type & pos,
606 int offset, float & x);
608 /// get the next breakpoint in a given paragraph
609 LyXParagraph::size_type NextBreakPoint(Row const * row,
611 /// returns the minimum space a row needs on the screen in pixel
612 int Fill(Row * row, int paperwidth) const;
614 /** returns the minimum space a manual label needs on the
616 int LabelFill(Row const * row) const;
619 LyXParagraph::size_type
620 BeginningOfMainBody(LyXParagraph const * par) const;
622 /** Returns the left beginning of the text.
623 This information cannot be taken from the layouts-objekt, because
624 in LaTeX the beginning of the text fits in some cases
625 (for example sections) exactly the label-width.
627 int LeftMargin(Row const * row) const;
629 int RightMargin(Row const * row) const;
631 int LabelEnd (Row const * row) const;
633 /** returns the number of separators in the specified row.
634 The separator on the very last column doesnt count
636 int NumberOfSeparators(Row const * row) const;
638 /** returns the number of hfills in the specified row. The
639 LyX-Hfill is a LaTeX \hfill so that the hfills at the
640 beginning and at the end were ignored. This is {\em MUCH}
641 more usefull than not to ignore!
643 int NumberOfHfills(Row const * row) const;
645 /// like NumberOfHfills, but only those in the manual label!
646 int NumberOfLabelHfills(Row const * row) const;
647 /** returns true, if a expansion is needed. Rules are given by
650 bool HfillExpansion(Row const * row_ptr,
651 LyXParagraph::size_type pos) const;
655 mutable std::vector<LyXParagraph::size_type> log2vis_list;
658 mutable std::vector<LyXParagraph::size_type> vis2log_list;
661 mutable std::vector<LyXParagraph::size_type> bidi_levels;
664 mutable LyXParagraph::size_type bidi_start;
667 mutable LyXParagraph::size_type bidi_end;
670 mutable bool bidi_same_direction;
673 unsigned char TransformChar(unsigned char c, Letter_Form form) const;
676 unsigned char TransformChar(unsigned char c, LyXParagraph * par,
677 LyXParagraph::size_type pos) const;
679 /** returns the paragraph position of the last character in the
682 LyXParagraph::size_type RowLast(Row const * row) const;
684 LyXParagraph::size_type RowLastPrintable(Row const * row) const;