4 * This file is part of LyX, the document processor.
5 * Licence details can be found in the file COPYING.
8 * \author Lars Gullik Bjønnes
11 * Full author contact details are available in file CREDITS
18 #include "lyxcursor.h"
21 #include "insets/inset.h"
23 #include "bufferview_funcs.h"
39 This class holds the mapping between buffer paragraphs and screen rows.
43 /// what repainting is needed
45 /// no repaint is needed
47 /// the refresh_row needs repainting
49 /// everything from refresh_y downwards needs repainting
55 // the word around the cursor, only if the cursor is
58 // the word around the cursor
60 /// the word begining from the cursor position
62 /// the word around the cursor or before the cursor
64 /// the next word (not yet used)
69 LyXText(BufferView *);
70 /// sets inset as owner
71 LyXText(BufferView *, InsetText *);
73 void init(BufferView *, bool reinit = false);
78 /// the current font settings
81 LyXFont real_current_font;
83 /** the 'anchor' row: the position of this row remains constant
84 * with respect to the top of the screen
86 RowList::iterator anchor_row_;
87 /** the pixel offset with respect to this row of top_y
89 int anchor_row_offset_;
91 /// get the y coord. of the top of the screen (relative to doc start)
93 /// set the y coord. of the top of the screen (relative to doc start)
95 /// set the anchoring row. top_y will be computed relative to this
96 void anchor_row(RowList::iterator rit);
98 InsetText * inset_owner;
100 UpdatableInset * the_locking_inset;
103 int getRealCursorX() const;
105 LyXFont const getFont(Buffer const *, ParagraphList::iterator pit,
106 lyx::pos_type pos) const;
108 LyXFont const getLayoutFont(Buffer const *,
109 ParagraphList::iterator pit) const;
111 LyXFont const getLabelFont(Buffer const *,
112 ParagraphList::iterator pit) const;
114 void setCharFont(Buffer const *, ParagraphList::iterator pit,
115 lyx::pos_type pos, LyXFont const & font);
116 void setCharFont(ParagraphList::iterator pit,
118 LyXFont const & font, bool toggleall);
121 void breakAgainOneRow(RowList::iterator rit);
122 /// what you expect when pressing <enter> at cursor position
123 void breakParagraph(ParagraphList & paragraphs, char keep_layout = 0);
125 /** set layout over selection and make a total rebreak of
128 Paragraph * setLayout(LyXCursor & actual_cursor,
129 LyXCursor & selection_start,
130 LyXCursor & selection_end,
131 string const & layout);
133 void setLayout(string const & layout);
136 * Increase or decrease the nesting depth of the selected paragraph(s)
137 * if test_only, don't change any depths. Returns whether something
138 * (would have) changed
140 bool changeDepth(bv_funcs::DEPTH_CHANGE type, bool test_only);
142 /// get the depth at current cursor position
143 int getDepth() const;
145 /** set font over selection and make a total rebreak of those
147 toggleall defaults to false.
149 void setFont(LyXFont const &, bool toggleall = false);
151 /** deletes and inserts again all paragaphs between the cursor
152 and the specified par. The Cursor is needed to set the refreshing
154 This function is needed after SetLayout and SetFont etc.
156 void redoParagraphs(LyXCursor const & cursor,
157 Paragraph const * end_par);
159 void redoParagraph();
162 void toggleFree(LyXFont const &, bool toggleall = false);
165 string getStringToIndex();
167 /** recalculates the heights of all previous rows of the
168 specified paragraph. needed, if the last characters font
171 void redoHeightOfParagraph();
173 /** insert a character, moves all the following breaks in the
174 same Paragraph one to the right and make a little rebreak
176 void insertChar(char c);
178 void insertInset(Inset * inset);
180 /// Completes the insertion with a full rebreak
184 RowList::iterator need_break_row;
186 /// clear any pending paints
190 * Mark position y as the starting point for a repaint
192 void postPaint(int start_y);
195 * Mark the given row at position y as needing a repaint.
197 void postRowPaint(RowList::iterator rit, int start_y);
200 Inset::RESULT dispatch(FuncRequest const & cmd);
204 BufferView * bv() const;
206 friend class LyXScreen;
209 * Return the status. This represents what repaints are
210 * pending after some operation (e.g. inserting a char).
212 refresh_status refreshStatus() const;
216 * The pixel y position from which to repaint the screen.
217 * The position is absolute along the height of outermost
218 * lyxtext (I think). REFRESH_AREA and REFRESH_ROW
219 * repaints both use this as a starting point (if it's within
220 * the viewable portion of the lyxtext).
224 * The row from which to repaint the screen, used by screen.c.
225 * This must be set if the pending update is REFRESH_ROW.
226 * It doesn't make any difference for REFRESH_AREA.
228 RowList::iterator refresh_row;
230 refresh_status refresh_status_;
232 /// only the top-level LyXText has this non-zero
233 BufferView * bv_owner;
236 /** returns a pointer to the row near the specified y-coordinate
237 (relative to the whole text). y is set to the real beginning
240 RowList::iterator getRowNearY(int & y) const;
242 /** returns the column near the specified x-coordinate of the row
243 x is set to the real beginning of this column
245 lyx::pos_type getColumnNearX(RowList::iterator rit,
246 int & x, bool & boundary) const;
248 /** returns a pointer to a specified row. y is set to the beginning
252 getRow(Paragraph * par, lyx::pos_type pos, int & y) const;
254 RowList & rows() const {
259 Later this variable has to be removed. There should be now internal
260 cursor in a text (and thus not in a buffer). By keeping this it is
261 (I think) impossible to have several views with the same buffer, but
262 the cursor placed at different places.
264 Since the LyXText now has been moved from Buffer to BufferView
265 it should not be absolutely needed to move the cursor...
267 LyXCursor cursor; // actual cursor position
269 /** The structure that keeps track of the selections set. */
272 : set_(false), mark_(false)
286 LyXCursor cursor; // temporary cursor to hold a cursor position
287 // until setSelection is called!
288 LyXCursor start; // start of a REAL selection
289 LyXCursor end; // end of a REAL selection
291 bool set_; // former selection
292 bool mark_; // former mark_set
296 // this is used to handle XSelection events in the right manner
297 Selection xsel_cache;
299 /// needed for the toggling (cursor position on last selection made)
300 LyXCursor last_sel_cursor;
301 /// needed for toggling the selection in screen.C
302 LyXCursor toggle_cursor;
303 /// needed for toggling the selection in screen.C
304 LyXCursor toggle_end_cursor;
306 /// need the selection cursor:
309 void clearSelection();
311 string const selectionAsString(Buffer const *, bool label) const;
313 /// select the word we need depending on word_location
314 void getWord(LyXCursor & from, LyXCursor & to,
315 word_location const);
316 /// just selects the word the cursor is in
317 void selectWord(word_location const);
318 /// returns the inset at cursor (if it exists), 0 otherwise
319 Inset * getInset() const;
321 /// accept selected change
324 /// reject selected change
327 /** 'selects" the next word, where the cursor is not in
328 and returns this word as string. THe cursor will be moved
329 to the beginning of this word.
330 With SelectSelectedWord can this be highlighted really
332 WordLangTuple const selectNextWordToSpellcheck(float & value);
334 void selectSelectedWord();
335 /// returns true if par was empty and was removed
336 bool setCursor(ParagraphList::iterator pit,
339 bool boundary = false);
341 void setCursor(LyXCursor &, ParagraphList::iterator pit,
343 bool boundary = false);
345 void setCursorIntern(ParagraphList::iterator pit,
348 bool boundary = false);
350 void setCurrentFont();
353 bool isBoundary(Buffer const *, Paragraph * par,
354 lyx::pos_type pos) const;
356 bool isBoundary(Buffer const *, Paragraph * par,
358 LyXFont const & font) const;
361 void setCursorFromCoordinates(int x, int y);
363 void setCursorFromCoordinates(LyXCursor &,
366 void cursorUp(bool selecting = false);
368 void cursorDown(bool selecting = false);
370 void cursorLeft(bool internal = true);
372 void cursorRight(bool internal = true);
374 void cursorLeftOneWord();
376 void cursorRightOneWord();
378 void cursorUpParagraph();
380 void cursorDownParagraph();
386 void cursorPrevious();
398 bool selectWordWhenUnderCursor(word_location);
404 text_capitalization = 1,
408 /// Change the case of the word at cursor position.
409 void changeCase(TextCase action);
414 void cutSelection(bool doclear = true, bool realcut = true);
416 void copySelection();
418 void pasteSelection();
420 void copyEnvironmentType();
422 void pasteEnvironmentType();
424 /** the DTP switches for paragraphs. LyX will store the top settings
425 always in the first physical paragraph, the bottom settings in the
426 last. When a paragraph is broken, the top settings rest, the bottom
427 settings are given to the new one. So I can make shure, they do not
428 duplicate themself (and you cannnot make dirty things with them! )
430 void setParagraph(bool line_top, bool line_bottom,
431 bool pagebreak_top, bool pagebreak_bottom,
432 VSpace const & space_top,
433 VSpace const & space_bottom,
434 Spacing const & spacing,
436 string const & labelwidthstring,
439 /* these things are for search and replace */
442 * Sets the selection from the current cursor position to length
443 * characters to the right. No safety checks.
445 void setSelectionRange(lyx::pos_type length);
447 /** simple replacing. The font of the first selected character
450 void replaceSelectionWithString(string const & str);
452 /// needed to insert the selection
453 void insertStringAsLines(string const & str);
454 /// needed to insert the selection
455 void insertStringAsParagraphs(string const & str);
457 /// Find next inset of some specified type.
458 bool gotoNextInset(std::vector<Inset::Code> const & codes,
459 string const & contents = string());
461 void gotoInset(std::vector<Inset::Code> const & codes,
464 void gotoInset(Inset::Code code, bool same_content);
467 /* for the greater insets */
469 /// returns false if inset wasn't found
470 bool updateInset(Inset *);
472 void checkParagraph(Paragraph * par, lyx::pos_type pos);
474 int workWidth() const;
476 int workWidth(Inset * inset) const;
479 void computeBidiTables(Buffer const *, RowList::iterator row) const;
480 /// Maps positions in the visual string to positions in logical string.
481 lyx::pos_type log2vis(lyx::pos_type pos) const;
482 /// Maps positions in the logical string to positions in visual string.
483 lyx::pos_type vis2log(lyx::pos_type pos) const;
485 lyx::pos_type bidi_level(lyx::pos_type pos) const;
487 bool bidi_InRange(lyx::pos_type pos) const;
490 mutable RowList rowlist_;
492 void cursorLeftOneWord(LyXCursor &);
495 float getCursorX(RowList::iterator rit, lyx::pos_type pos,
496 lyx::pos_type last, bool boundary) const;
497 /// used in setlayout
498 void makeFontEntriesLayoutSpecific(Buffer const &, Paragraph & par);
500 /** forces the redrawing of a paragraph. Needed when manipulating a
503 void redoDrawingOfParagraph(LyXCursor const & cursor);
505 /** Copybuffer for copy environment type.
506 Asger has learned that this should be a buffer-property instead
507 Lgb has learned that 'char' is a lousy type for non-characters
509 string copylayouttype;
511 /// removes the row and reset the touched counters
512 void removeRow(RowList::iterator rit);
514 /// remove all following rows of the paragraph of the specified row.
515 void removeParagraph(RowList::iterator rit);
517 /// insert the specified paragraph behind the specified row
518 void insertParagraph(Paragraph * par, RowList::iterator rowit);
520 /** appends the implizit specified paragraph behind the specified row,
521 * start at the implizit given position */
522 void appendParagraph(RowList::iterator rowit);
525 void breakAgain(RowList::iterator rit);
526 /// Calculate and set the height of the row
527 void setHeightOfRow(RowList::iterator rit);
529 // fix the cursor `cur' after a characters has been deleted at `where'
530 // position. Called by deleteEmptyParagraphMechanism
531 void fixCursorAfterDelete(LyXCursor & cur,
532 LyXCursor const & where);
534 /// delete double space (false) or empty paragraphs (true) around old_cursor
535 bool deleteEmptyParagraphMechanism(LyXCursor const & old_cursor);
538 /** Updates all counters starting BEHIND the row. Changed paragraphs
539 * with a dynamic left margin will be rebroken. */
540 void updateCounters();
544 * Returns an inset if inset was hit, or 0 if not.
545 * If hit, the coordinates are changed relative to the inset.
547 Inset * checkInsetHit(int & x, int & y);
550 int singleWidth(ParagraphList::iterator pit,
551 lyx::pos_type pos) const;
553 int singleWidth(ParagraphList::iterator pit,
554 lyx::pos_type pos, char c) const;
556 /// return the color of the canvas
557 LColor::color backgroundColor() const;
560 mutable bool bidi_same_direction;
562 unsigned char transformChar(unsigned char c, Paragraph const & par,
563 lyx::pos_type pos) const;
566 * Returns the left beginning of the text.
567 * This information cannot be taken from the layout object, because
568 * in LaTeX the beginning of the text fits in some cases
569 * (for example sections) exactly the label-width.
571 int leftMargin(Row const & row) const;
573 int rightMargin(Buffer const &, Row const & row) const;
575 /** this calculates the specified parameters. needed when setting
576 * the cursor and when creating a visible row */
577 void prepareToPrint(RowList::iterator row, float & x,
578 float & fill_separator,
580 float & fill_label_hfill,
581 bool bidi = true) const;
585 void setCounter(Buffer const *, Paragraph * par);
587 void deleteWordForward();
589 void deleteWordBackward();
591 void deleteLineForward();
594 * some low level functions
598 /// return the pos value *before* which a row should break.
599 /// for example, the pos at which IsNewLine(pos) == true
600 lyx::pos_type rowBreakPoint(Row const & row) const;
602 /// returns the minimum space a row needs on the screen in pixel
603 int fill(RowList::iterator row, int workwidth) const;
606 * returns the minimum space a manual label needs on the
609 int labelFill(Row const & row) const;
612 int labelEnd(Row const & row) const;
615 mutable std::vector<lyx::pos_type> log2vis_list;
617 mutable std::vector<lyx::pos_type> vis2log_list;
619 mutable std::vector<lyx::pos_type> bidi_levels;
621 mutable lyx::pos_type bidi_start;
623 mutable lyx::pos_type bidi_end;
629 // special owner functions
631 ParagraphList & ownerParagraphs() const;
633 void ownerParagraph(Paragraph *) const;
634 // set it searching first for the right owner using the paragraph id
635 void ownerParagraph(int id, Paragraph *) const;
637 /// return true if this is owned by an inset.
638 bool isInInset() const;
641 /// return the default height of a row in pixels, considering font zoom
642 extern int defaultRowHeight();