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 *);
59 /// points to Buffer.params
60 //BufferParams * bparams;
64 mutable int number_of_rows;
67 /// the current font settings
68 mutable LyXFont current_font;
70 mutable LyXFont real_current_font;
73 void owner(BufferView *);
76 LyXFont GetFont(LyXParagraph * par,
77 LyXParagraph::size_type pos) const;
79 void SetCharFont(LyXParagraph * par,
80 LyXParagraph::size_type pos,
81 LyXFont const & font);
82 /// returns a pointer to the very first LyXParagraph
83 LyXParagraph * FirstParagraph() const;
85 /// what you expect when pressing <enter> at cursor position
86 void BreakParagraph(char keep_layout = 0);
88 /** set layout over selection and make a total rebreak of
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) 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 /// just selects the word the cursor is in
230 /** 'selects" the next word, where the cursor is not in
231 and returns this word as string. THe cursor will be moved
232 to the beginning of this word.
233 With SelectSelectedWord can this be highlighted really
235 char * SelectNextWord(float & value);
237 void SelectSelectedWord();
239 void SetCursor(LyXParagraph * par,
240 LyXParagraph::size_type pos,
241 bool setfont = true) const;
242 void SetCursor(LyXCursor &, LyXParagraph * par,
243 LyXParagraph::size_type pos) const;
245 void SetCursorIntern(LyXParagraph * par,
246 LyXParagraph::size_type pos,
247 bool setfont = true) const;
249 void SetCursorFromCoordinates(int x, long y) const;
250 void SetCursorFromCoordinates(LyXCursor &, int x, long y) const;
252 void CursorUp() const;
254 void CursorDown() const;
256 void CursorLeft() const;
258 void CursorRight() const;
260 void CursorLeftOneWord() const;
262 void CursorRightOneWord() const;
264 void CursorUpParagraph() const;
266 void CursorDownParagraph() const;
268 void CursorHome() const;
270 void CursorEnd() const;
272 void CursorTab() const;
274 void CursorTop() const;
276 void CursorBottom() const;
282 void DeleteWordForward();
284 void DeleteWordBackward();
286 void DeleteLineForward();
288 bool SelectWordWhenUnderCursor();
292 text_capitalization = 1,
295 /// Change the case of the word at cursor position.
296 void ChangeWordCase(TextCase action);
298 /** returns a printed row in a pixmap. The y value is needed to
299 decide, wether it is selected text or not. This is a strange
302 void GetVisibleRow(int offset, Row * row_ptr, long y);
306 void ToggleFootnote();
310 void OpenFootnotes();
314 void CloseFootnotes();
316 void CloseFootnote();
318 /** turn the selection into a new environment. If there is no
319 selection, create an empty environment
321 void InsertFootnoteEnvironment(LyXParagraph::footnote_kind kind);
323 void MeltFootnoteEnvironment();
325 void CutSelection(bool = true);
327 void CopySelection();
329 void PasteSelection();
331 void copyEnvironmentType();
333 void pasteEnvironmentType();
335 void InsertFootnote();
337 void InsertMarginpar();
341 void InsertTabular();
343 /** the DTP switches for paragraphs. LyX will store the top settings
344 always in the first physical paragraph, the bottom settings in the
345 last. When a paragraph is broken, the top settings rest, the bottom
346 settings are given to the new one. So I can make shure, they do not
347 duplicate themself (and you cannnot make dirty things with them! )
349 void SetParagraph(bool line_top, bool line_bottom,
350 bool pagebreak_top, bool pagebreak_bottom,
351 VSpace const & space_top,
352 VSpace const & space_bottom,
354 string labelwidthstring,
356 void SetParagraphExtraOpt(int type,
359 int alignment, bool hfill,
360 bool start_minipage);
362 /* these things are for search and replace */
364 /** returns true if the specified string is at the specified
367 bool IsStringInText(LyXParagraph * par,
368 LyXParagraph::size_type pos,
369 char const * str) const;
370 /** sets the selection over the number of characters of string,
373 void SetSelectionOverString(char const * str);
375 /** simple replacing. The font of the first selected character
378 void ReplaceSelectionWithString(char const * str);
380 /** if the string can be found: return true and set the cursor to
382 bool SearchForward(char const * str) const;
383 bool SearchBackward(char const * str) const;
385 /// needed to insert the selection
386 void InsertStringA(string const & str);
387 /// needed to insert the selection
388 void InsertStringB(string const & str);
390 /// usefull when texing from within LyX
391 bool GotoNextError() const;
393 /// just another feature :)
394 bool GotoNextNote() const;
396 /* for the greater insets */
398 /// returns 0 if inset wasn't found
399 int UpdateInset(Inset * inset);
401 void CheckParagraph(LyXParagraph * par,
402 LyXParagraph::size_type pos);
404 int NumberOfCell(LyXParagraph * par,
405 LyXParagraph::size_type pos) const;
406 /* table stuff -- begin*/
408 /** all table features of the text-class are put together in
409 this function. Possible values of feature are defined in table.h
411 void TableFeatures(int feature, string const & val) const;
413 void TableFeatures(int feature) const;
415 /** pos points at the beginning of the next cell (if there is one)
417 int WidthOfCell(LyXParagraph * par,
418 LyXParagraph::size_type & pos) const;
420 void CheckParagraphInTable(LyXParagraph * par,
421 LyXParagraph::size_type pos);
423 void InsertCharInTable(char c);
425 void BackspaceInTable();
427 bool HitInTable(Row * row, int x) const;
429 bool MouseHitInTable(int x, long y) const;
430 /* table stuff -- end*/
432 LyXParagraph * GetParFromID(int id);
435 /// returns false if no undo possible
437 /// returns false if no redo possible
439 /// used by TextUndo/TextRedo
440 bool TextHandleUndo(Undo * undo);
441 /// makes sure the next operation will be stored
443 /// this is dangerous and for internal use only
445 /// this is dangerous and for internal use only
447 /// the flag used by FinishUndo();
448 mutable bool undo_finished;
452 void SetUndo(Undo::undo_kind kind,
453 LyXParagraph const * before,
454 LyXParagraph const * end) const;
456 void SetRedo(Undo::undo_kind kind,
457 LyXParagraph const * before,
458 LyXParagraph const * end);
460 Undo * CreateUndo(Undo::undo_kind kind,
461 LyXParagraph const * before,
462 LyXParagraph const * end) const;
463 /// for external use in lyx_cb.C
464 void SetCursorParUndo();
466 void CursorLeftIntern() const;
468 void CursorRightIntern() const;
470 void RemoveTableRow(LyXCursor * cursor) const;
472 bool IsEmptyTableCell() const;
474 void toggleAppendix();
476 unsigned short paperWidth() const { return paperwidth; }
481 /// width of the paper
482 unsigned short paperwidth;
485 mutable Row * firstrow;
487 mutable Row * lastrow;
489 /** Copybuffer for copy environment type
490 Asger has learned that this should be a buffer-property instead
491 Lgb has learned that 'char' is a lousy type for non-characters
493 LyXTextClass::size_type copylayouttype;
495 /** inserts a new row behind the specified row, increments
496 * the touched counters */
497 void InsertRow(Row * row, LyXParagraph * par,
498 LyXParagraph::size_type pos) const;
499 /** removes the row and reset the touched counters */
500 void RemoveRow(Row * row) const;
502 /** remove all following rows of the paragraph of the specified row. */
503 void RemoveParagraph(Row * row) const;
505 /** insert the specified paragraph behind the specified row */
506 void InsertParagraph(LyXParagraph * par, Row * row) const;
508 /** appends the implizit specified paragraph behind the specified row,
509 * start at the implizit given position */
510 void AppendParagraph(Row * row) const;
513 void BreakAgain(Row * row) const;
515 void BreakAgainOneRow(Row * row);
516 /// Calculate and set the height of the row
517 void SetHeightOfRow(Row * row_ptr) const;
519 /** this calculates the specified parameters. needed when setting
520 * the cursor and when creating a visible row */
521 void PrepareToPrint(Row * row, float & x,
522 float & fill_separator,
524 float & fill_label_hfill,
525 bool bidi = true) const;
527 void DeleteEmptyParagraphMechanism(LyXCursor const & old_cursor) const;
529 /** Updates all counters starting BEHIND the row. Changed paragraphs
530 * with a dynamic left margin will be rebroken. */
531 void UpdateCounters(Row * row) const;
533 void SetCounter(LyXParagraph * par) const;
536 * some low level functions
540 int SingleWidth(LyXParagraph * par,
541 LyXParagraph::size_type pos) const;
543 int SingleWidth(LyXParagraph * par,
544 LyXParagraph::size_type pos, char c) const;
546 void draw(Row const * row,
547 LyXParagraph::size_type & pos,
548 int offset, float & x);
550 /// get the next breakpoint in a given paragraph
551 LyXParagraph::size_type NextBreakPoint(Row const * row,
553 /// returns the minimum space a row needs on the screen in pixel
554 int Fill(Row const * row, int paperwidth) const;
556 /** returns the minimum space a manual label needs on the
558 int LabelFill(Row const * row) const;
561 LyXParagraph::size_type BeginningOfMainBody(LyXParagraph * par) const;
563 /** Returns the left beginning of the text.
564 This information cannot be taken from the layouts-objekt, because
565 in LaTeX the beginning of the text fits in some cases
566 (for example sections) exactly the label-width.
568 int LeftMargin(Row const * row) const;
570 int RightMargin(Row const * row) const;
572 int LabelEnd (Row const * row) const;
574 /** returns the number of separators in the specified row.
575 The separator on the very last column doesnt count
577 int NumberOfSeparators(Row const * row) const;
579 /** returns the number of hfills in the specified row. The
580 LyX-Hfill is a LaTeX \hfill so that the hfills at the
581 beginning and at the end were ignored. This is {\em MUCH}
582 more usefull than not to ignore!
584 int NumberOfHfills(Row const * row) const;
586 /// like NumberOfHfills, but only those in the manual label!
587 int NumberOfLabelHfills(Row const * row) const;
588 /** returns true, if a expansion is needed. Rules are given by
591 bool HfillExpansion(Row const * row_ptr,
592 LyXParagraph::size_type pos) const;
596 mutable std::vector<LyXParagraph::size_type> log2vis_list;
599 mutable std::vector<LyXParagraph::size_type> vis2log_list;
602 mutable std::vector<LyXParagraph::size_type> bidi_levels;
605 mutable LyXParagraph::size_type bidi_start;
608 mutable bool bidi_same_direction;
611 void ComputeBidiTables(Row *row) const;
613 /// Maps positions in the visual string to positions in logical string.
615 LyXParagraph::size_type log2vis(LyXParagraph::size_type pos) const {
616 if (bidi_start == -1)
619 return log2vis_list[pos-bidi_start];
622 /// Maps positions in the logical string to positions in visual string.
624 LyXParagraph::size_type vis2log(LyXParagraph::size_type pos) const {
625 if (bidi_start == -1)
628 return vis2log_list[pos-bidi_start];
632 int bidi_level(LyXParagraph::size_type pos) const {
633 if (bidi_start == -1)
636 return bidi_levels[pos-bidi_start];
640 unsigned char TransformChar(unsigned char c, Letter_Form form) const;
643 unsigned char TransformChar(unsigned char c, LyXParagraph * par,
644 LyXParagraph::size_type pos) const;
646 /** returns the paragraph position of the last character in the
649 LyXParagraph::size_type RowLast(Row const * row) const;
651 LyXParagraph::size_type RowLastPrintable(Row const * row) const;