2 /* This file is part of
3 * ======================================================
5 * LyX, The Document Processor
7 * Copyright 1995 Matthias Ettrich
8 * Copyright 1995-1999 The LyX Team.
10 * ====================================================== */
21 #include "lyxcursor.h"
22 #include "lyxparagraph.h"
31 This class holds the mapping between buffer paragraphs and screen rows.
44 NEED_VERY_LITTLE_REFRESH
47 /// points to Buffer.params
48 BufferParams * parameters;
52 mutable int number_of_rows;
55 /// the current font settings
56 mutable LyXFont current_font;
58 mutable LyXFont real_current_font;
61 LyXText(BufferView *, int paperwidth, Buffer *);
67 void owner(BufferView *);
70 LyXFont GetFont(LyXParagraph * par,
71 LyXParagraph::size_type pos) const;
73 void SetCharFont(LyXParagraph * par,
74 LyXParagraph::size_type pos,
75 LyXFont const & font);
76 /// returns a pointer to the very first LyXParagraph
77 LyXParagraph * FirstParagraph() const;
79 /// what you expect when pressing <enter> at cursor position
80 void BreakParagraph(char keep_layout = 0);
82 /** set layout over selection and make a total rebreak of
85 void SetLayout(LyXTextClass::size_type layout);
88 void MakeFontEntriesLayoutSpecific(LyXParagraph * par);
90 /** increment depth over selection and make a total rebreak of those
95 /** decrement depth over selection and make a total rebreak of those
99 /** Get the depth at current cursor position
101 int GetDepth() const { return cursor.par->GetDepth(); }
103 /** set font over selection and make a total rebreak of those
105 toggleall defaults to false.
107 void SetFont(LyXFont const & font, bool toggleall = false);
109 /** deletes and inserts again all paragaphs between the cursor
110 and the specified par. The Cursor is needed to set the refreshing
112 This function is needed after SetLayout and SetFont etc.
114 void RedoParagraphs(LyXCursor const & cursor,
115 LyXParagraph const * end_par) const;
117 void RedoParagraph() const;
120 void ToggleFree(LyXFont const & font, bool toggleall = false);
122 /** recalculates the heights of all previous rows of the
123 specified paragraph. needed, if the last characters font
126 void RedoHeightOfParagraph(LyXCursor const & cursor);
128 /** forces the redrawing of a paragraph. Needed when manipulating a
131 void RedoDrawingOfParagraph(LyXCursor const & cursor);
133 /** insert a character, moves all the following breaks in the
134 same Paragraph one to the right and make a little rebreak
136 void InsertChar(char c);
138 void InsertInset(Inset * inset);
140 /// completes the insertion with a full rebreak
144 LyXParagraph::footnote_flag GetFootnoteFlag(int row);
146 Row * need_break_row;
148 mutable long refresh_y;
156 mutable Row * refresh_row;
160 /** wether the screen needs a refresh,
161 starting with refresh_y
163 mutable text_status status;
165 /** returns a pointer to the row near the specified y-coordinate
166 (relative to the whole text). y is set to the real beginning
169 Row * GetRowNearY(long & y) const;
171 /** returns the column near the specified x-coordinate of the row
172 x is set to the real beginning of this column
174 int GetColumnNearX(Row * row, int & x) const;
176 /** returns a pointer to a specified row. y is set to the beginning
179 Row * GetRow(LyXParagraph * par,
180 LyXParagraph::size_type pos, long & y) const;
181 /** returns the height of a default row, needed for scrollbar
183 int DefaultHeight() const;
186 Later this variable has to be removed. There should be now internal
187 cursor in a text (and thus not in a buffer). By keeping this it is
188 (I think) impossible to have several views with the same buffer, but
189 the cursor placed at different places.
191 Since the LyXText now has been moved from Buffer to BufferView
192 it should not be absolutely needed to move the cursor...
194 mutable LyXCursor cursor;
196 /* the selection cursor */
198 mutable bool selection;
200 mutable bool mark_set;
203 mutable LyXCursor sel_cursor;
205 LyXCursor sel_start_cursor;
207 mutable LyXCursor sel_end_cursor;
208 /// needed for the toggling
209 LyXCursor last_sel_cursor;
211 LyXCursor toggle_cursor;
213 LyXCursor toggle_end_cursor;
215 /// need the selection cursor:
218 void ClearSelection() const;
220 /// just selects the word the cursor is in
223 /** 'selects" the next word, where the cursor is not in
224 and returns this word as string. THe cursor will be moved
225 to the beginning of this word.
226 With SelectSelectedWord can this be highlighted really
228 char * SelectNextWord(float & value);
230 void SelectSelectedWord();
232 void SetCursor(LyXParagraph * par,
233 LyXParagraph::size_type pos,
234 bool setfont = true) const;
236 void SetCursorIntern(LyXParagraph * par,
237 LyXParagraph::size_type pos,
238 bool setfont = true) const;
240 void SetCursorFromCoordinates(int x, long y) const;
242 void CursorUp() const;
244 void CursorDown() const;
246 void CursorLeft() const;
248 void CursorRight() const;
250 void CursorLeftOneWord() const;
252 void CursorRightOneWord() const;
254 void CursorUpParagraph() const;
256 void CursorDownParagraph() const;
258 void CursorHome() const;
260 void CursorEnd() const;
262 void CursorTab() const;
264 void CursorTop() const;
266 void CursorBottom() const;
272 void DeleteWordForward();
274 void DeleteWordBackward();
276 void DeleteLineForward();
278 int SelectWordWhenUnderCursor();
282 text_capitalization = 1,
285 /// Change the case of the word at cursor position.
286 void ChangeWordCase(TextCase action);
288 /** returns a printed row in a pixmap. The y value is needed to
289 decide, wether it is selected text or not. This is a strange
292 void GetVisibleRow(int offset,
293 Row * row_ptr, long y);
297 void ToggleFootnote();
301 void OpenFootnotes();
305 void CloseFootnotes();
307 void CloseFootnote();
309 /** turn the selection into a new environment. If there is no
310 selection, create an empty environment
312 void InsertFootnoteEnvironment(LyXParagraph::footnote_kind kind);
314 void MeltFootnoteEnvironment();
316 void CutSelection(bool = true);
318 void CopySelection();
320 void PasteSelection();
322 void copyEnvironmentType();
324 void pasteEnvironmentType();
326 void InsertFootnote();
328 void InsertMarginpar();
332 void InsertTabular();
334 /** the DTP switches for paragraphs. LyX will store the top settings
335 always in the first physical paragraph, the bottom settings in the
336 last. When a paragraph is broken, the top settings rest, the bottom
337 settings are given to the new one. So I can make shure, they do not
338 duplicate themself (and you cannnot make dirty things with them! )
340 void SetParagraph(bool line_top, bool line_bottom,
341 bool pagebreak_top, bool pagebreak_bottom,
342 VSpace const & space_top,
343 VSpace const & space_bottom,
345 string labelwidthstring,
347 void SetParagraphExtraOpt(int type,
350 int alignment, bool hfill,
351 bool start_minipage);
353 /* these things are for search and replace */
355 /** returns true if the specified string is at the specified
358 bool IsStringInText(LyXParagraph * par,
359 LyXParagraph::size_type pos,
360 char const * str) const;
361 /** sets the selection over the number of characters of string,
364 void SetSelectionOverString(char const * str);
366 /** simple replacing. The font of the first selected character
369 void ReplaceSelectionWithString(char const * str);
371 /** if the string can be found: return true and set the cursor to
373 bool SearchForward(char const * str) const;
374 bool SearchBackward(char const * str) const;
376 /// needed to insert the selection
377 void InsertStringA(LyXParagraph::TextContainer const & text);
378 /// needed to insert the selection
379 void InsertStringB(LyXParagraph::TextContainer const & text);
380 /// needed to insert the selection
381 void InsertStringA(char const * str);
382 /// needed to insert the selection
383 void InsertStringB(char const * str);
385 /// usefull when texing from within LyX
386 bool GotoNextError() const;
388 /// just another feature :)
389 bool GotoNextNote() const;
391 /** needed to switch between different classes this works
392 for a list of paragraphs beginning with the specified par
393 return value is the number of wrong conversions
395 int SwitchLayoutsBetweenClasses(LyXTextClassList::size_type class1,
396 LyXTextClassList::size_type class2,
399 /* for the greater insets */
401 /// returns 0 if inset wasn't found
402 int UpdateInset(Inset * inset);
404 void CheckParagraph(LyXParagraph * par,
405 LyXParagraph::size_type pos);
407 int NumberOfCell(LyXParagraph * par,
408 LyXParagraph::size_type pos) const;
409 /* table stuff -- begin*/
411 /** all table features of the text-class are put together in
412 this function. Possible values of feature are defined in table.h
414 void TableFeatures(int feature, string const & val) const;
416 void TableFeatures(int feature) const;
418 /** pos points at the beginning of the next cell (if there is one)
420 int WidthOfCell(LyXParagraph * par,
421 LyXParagraph::size_type & pos) const;
423 void CheckParagraphInTable(LyXParagraph * par,
424 LyXParagraph::size_type pos);
426 void InsertCharInTable(char c);
428 void BackspaceInTable();
430 bool HitInTable(Row * row, int x) const;
432 bool MouseHitInTable(int x, long y) const;
433 /* table stuff -- end*/
435 LyXParagraph * GetParFromID(int id);
438 /// returns false if no undo possible
440 /// returns false if no redo possible
442 /// used by TextUndo/TextRedo
443 bool TextHandleUndo(Undo * undo);
444 /// makes sure the next operation will be stored
446 /// this is dangerous and for internal use only
448 /// this is dangerous and for internal use only
450 /// the flag used by FinishUndo();
451 mutable bool undo_finished;
455 void SetUndo(Undo::undo_kind kind,
456 LyXParagraph const * before,
457 LyXParagraph const * end) const;
459 void SetRedo(Undo::undo_kind kind,
460 LyXParagraph const * before,
461 LyXParagraph const * end);
463 Undo * CreateUndo(Undo::undo_kind kind,
464 LyXParagraph const * before,
465 LyXParagraph const * end) const;
466 /// for external use in lyx_cb.C
467 void SetCursorParUndo();
469 void CursorLeftIntern() const;
471 void CursorRightIntern() const;
473 void RemoveTableRow(LyXCursor * cursor) const;
475 bool IsEmptyTableCell() const;
477 void toggleAppendix();
479 unsigned short paperWidth() const { return paperwidth; }
484 /// width of the paper
485 unsigned short paperwidth;
488 mutable Row * firstrow;
490 mutable Row * lastrow;
492 /** Copybuffer for copy environment type
493 Asger has learned that this should be a buffer-property instead
494 Lgb has learned that 'char' is a lousy type for non-characters
496 LyXTextClass::size_type copylayouttype;
498 /// the currentrow is needed to access rows faster*/
499 mutable Row * currentrow; // pointer to the current row
500 /// position in the text
501 mutable long currentrow_y;
503 /** inserts a new row behind the specified row, increments
504 * the touched counters */
505 void InsertRow(Row * row, LyXParagraph * par,
506 LyXParagraph::size_type pos) const;
507 /** removes the row and reset the touched counters */
508 void RemoveRow(Row * row) const;
510 /** remove all following rows of the paragraph of the specified row. */
511 void RemoveParagraph(Row * row) const;
513 /** insert the specified paragraph behind the specified row */
514 void InsertParagraph(LyXParagraph * par, Row * row) const;
516 /** appends the implizit specified paragraph behind the specified row,
517 * start at the implizit given position */
518 void AppendParagraph(Row * row) const;
521 void BreakAgain(Row * row) const;
523 void BreakAgainOneRow(Row * row);
524 /// Calculate and set the height of the row
525 void SetHeightOfRow(Row * row_ptr) const;
527 /** this calculates the specified parameters. needed when setting
528 * the cursor and when creating a visible row */
529 void PrepareToPrint(Row * row, float & x,
530 float & fill_separator,
532 float & fill_label_hfill,
533 bool bidi = true) const;
535 void DeleteEmptyParagraphMechanism(LyXCursor const & old_cursor) const;
537 /** Updates all counters starting BEHIND the row. Changed paragraphs
538 * with a dynamic left margin will be rebroken. */
539 void UpdateCounters(Row * row) const;
541 void SetCounter(LyXParagraph * par) const;
544 * some low level functions
548 int SingleWidth(LyXParagraph * par,
549 LyXParagraph::size_type pos) const;
551 int SingleWidth(LyXParagraph * par,
552 LyXParagraph::size_type pos, char c) const;
554 void draw(Row const * row,
555 LyXParagraph::size_type & pos,
556 int offset, float & x);
558 /// get the next breakpoint in a given paragraph
559 LyXParagraph::size_type NextBreakPoint(Row const * row,
561 /// returns the minimum space a row needs on the screen in pixel
562 int Fill(Row const * row, int paperwidth) const;
564 /** returns the minimum space a manual label needs on the
566 int LabelFill(Row const * row) const;
569 LyXParagraph::size_type BeginningOfMainBody(LyXParagraph * par) const;
571 /** Returns the left beginning of the text.
572 This information cannot be taken from the layouts-objekt, because
573 in LaTeX the beginning of the text fits in some cases
574 (for example sections) exactly the label-width.
576 int LeftMargin(Row const * row) const;
578 int RightMargin(Row const * row) const;
580 int LabelEnd (Row const * row) const;
582 /** returns the number of separators in the specified row.
583 The separator on the very last column doesnt count
585 int NumberOfSeparators(Row const * row) const;
587 /** returns the number of hfills in the specified row. The
588 LyX-Hfill is a LaTeX \hfill so that the hfills at the
589 beginning and at the end were ignored. This is {\em MUCH}
590 more usefull than not to ignore!
592 int NumberOfHfills(Row const * row) const;
594 /// like NumberOfHfills, but only those in the manual label!
595 int NumberOfLabelHfills(Row const * row) const;
597 /** returns true, if a expansion is needed. Rules are given by
600 bool HfillExpansion(Row const * row_ptr,
601 LyXParagraph::size_type pos) const;
604 mutable vector<LyXParagraph::size_type> log2vis_list;
607 mutable vector<LyXParagraph::size_type> vis2log_list;
610 mutable LyXParagraph::size_type bidi_start;
613 void ComputeBidiTables(Row *row) const;
616 void ComputeBidiTablesFromTo(Row *row,
617 LyXParagraph::size_type from,
618 LyXParagraph::size_type to,
619 LyXParagraph::size_type offset) const;
621 /// Maps positions in the visual string to positions in logical string.
623 LyXParagraph::size_type log2vis(LyXParagraph::size_type pos) const {
624 if (bidi_start == -1)
627 return log2vis_list[pos-bidi_start];
630 /// Maps positions in the logical string to positions in visual string.
632 LyXParagraph::size_type vis2log(LyXParagraph::size_type pos) const {
633 if (bidi_start == -1)
636 return vis2log_list[pos-bidi_start];
639 /** returns the paragraph position of the last character in the
642 LyXParagraph::size_type RowLast(Row const * row) const;