4 * This file is part of LyX, the document processor.
5 * Licence details can be found in the file COPYING.
9 * Full author contact details are available in file CREDITS.
15 #include "cursor_slice.h"
33 class MathUnknownInset;
37 // only needed for gcc 2.95, remove when support terminated
38 template <typename A, typename B>
39 bool ptr_cmp(A const * a, B const * b)
45 // this is used for traversing math insets
46 typedef std::vector<CursorSlice> CursorBase;
48 void increment(CursorBase &);
50 CursorBase ibegin(InsetBase * p);
52 CursorBase iend(InsetBase * p);
56 * The cursor class describes the position of a cursor within a document.
61 /// type for cell number in inset
62 typedef CursorSlice::idx_type idx_type;
63 /// type for paragraph numbers positions within a cell
64 typedef CursorSlice::par_type par_type;
65 /// type for cursor positions within a cell
66 typedef CursorSlice::pos_type pos_type;
67 /// type for row indices
68 typedef CursorSlice::row_type row_type;
69 /// type for col indices
70 typedef CursorSlice::col_type col_type;
72 /// create the cursor of a BufferView
73 explicit LCursor(BufferView & bv);
74 /// dispatch from innermost inset upwards
75 DispatchResult dispatch(FuncRequest const & cmd);
76 /// add a new cursor slice
77 void push(InsetBase * inset);
78 /// add a new cursor slice, place cursor on left end
79 void pushLeft(InsetBase * inset);
80 /// pop one level off the cursor
82 /// pop one slice off the cursor stack and go left
84 /// pop one slice off the cursor stack and go right
86 /// restrict cursor nesting to given size
88 /// access to current cursor slice
89 CursorSlice & current();
90 /// access to current cursor slice
91 CursorSlice const & current() const;
92 /// how many nested insets do we have?
93 size_t depth() const { return cursor_.size(); }
94 /// depth of current slice
95 int currentDepth() const { return current_; }
100 /// selection active?
101 bool selection() const { return selection_; }
102 /// selection active?
103 bool & selection() { return selection_; }
104 /// did we place the anchor?
105 bool mark() const { return mark_; }
106 /// did we place the anchor?
107 bool & mark() { return mark_; }
110 /// set selection at given position
111 void setSelection(CursorBase const & where, size_t n);
113 void clearSelection();
114 /// access start of selection
115 CursorSlice & selBegin();
116 /// access start of selection
117 CursorSlice const & selBegin() const;
118 /// access end of selection
119 CursorSlice & selEnd();
120 /// access end of selection
121 CursorSlice const & selEnd() const;
123 std::string grabSelection();
125 void eraseSelection();
127 std::string grabAndEraseSelection();
128 // other selection methods
135 /// pastes n-th element of cut buffer
136 void selPaste(size_t n);
138 void selHandle(bool selecting);
143 /// clears or deletes selection depending on lyxrc setting
144 void selClearOrDel();
146 std::string selectionAsString(bool label) const;
148 void paste(std::string const & data);
150 std::string currentState();
153 // access to the 'current' cursor slice
155 /// the containing inset
156 InsetBase * inset() const { return current().inset(); }
157 /// return the cell of the inset this cursor is in
158 idx_type idx() const { return current().idx(); }
159 /// return the cell of the inset this cursor is in
160 idx_type & idx() { return current().idx(); }
161 /// return the last possible cell in this inset
162 idx_type lastidx() const { return current().lastidx(); }
163 /// return the paragraph this cursor is in
164 par_type par() const { return current().par(); }
165 /// return the paragraph this cursor is in
166 par_type & par() { return current().par(); }
167 /// return the last possible paragraph in this inset
168 par_type lastpar() const;
169 /// return the position within the paragraph
170 pos_type pos() const { return current().pos(); }
171 /// return the position within the paragraph
172 pos_type & pos() { return current().pos(); }
173 /// return the last position within the paragraph
174 pos_type lastpos() const;
175 /// return the display row of the cursor with in the current par
176 row_type crow() const;
177 /// return the display row of the cursor with in the current par
178 row_type lastcrow() const;
180 /// return the number of embedded cells
181 size_t nargs() const;
182 /// return the number of embedded cells
183 size_t ncols() const;
184 /// return the number of embedded cells
185 size_t nrows() const;
186 /// return the grid row of the current cell
187 row_type row() const;
188 /// return the grid row of the current cell
189 col_type col() const;
190 /// the inset just behind the cursor
191 InsetBase * nextInset();
192 /// the inset just in front of the cursor
193 InsetBase * prevInset();
194 /// the inset just in front of the cursor
195 InsetBase const * prevInset() const;
198 // math-specific part
200 /// return the mathed cell this cursor is in
201 MathArray const & cell() const;
202 /// return the mathed cell this cursor is in
204 /// the mathatom left of the cursor
205 MathAtom const & prevAtom() const;
206 /// the mathatom left of the cursor
207 MathAtom & prevAtom();
208 /// the mathatom right of the cursor
209 MathAtom const & nextAtom() const;
210 /// the mathatom right of the cursor
211 MathAtom & nextAtom();
212 /// auto-correct mode
213 bool autocorrect() const { return autocorrect_; }
214 /// auto-correct mode
215 bool & autocorrect() { return autocorrect_; }
216 /// are we entering a macro name?
217 bool macromode() const { return macromode_; }
218 /// are we entering a macro name?
219 bool & macromode() { return macromode_; }
222 // text-specific part
223 /// see comment for boundary_ below
224 bool boundary() const { return current().boundary(); }
225 /// see comment for boundary_ below
226 bool & boundary() { return current().boundary(); }
227 /// the paragraph we're in
228 Paragraph & paragraph();
229 /// the paragraph we're in
230 Paragraph const & paragraph() const;
231 /// the row in the paragraph we're in
233 /// the row in the paragraph we're in
234 Row const & textRow() const;
236 LyXText * text() const;
238 InsetBase * innerInsetOfType(int code) const;
240 InsetTabular * innerInsetTabular() const;
242 LyXText * innerText() const;
244 CursorSlice const & innerTextSlice() const;
245 /// returns x,y position
246 void getPos(int & x, int & y) const;
247 /// returns cursor dimension
248 void getDim(int & asc, int & desc) const;
253 /// move one step to the left
255 /// move one step to the right
259 void insert(InsetBase *);
260 /// insert a single char
263 void insert(std::string const & str);
265 /// write acess to target x position of cursor
267 /// return target x position of cursor
268 int x_target() const;
269 /// clear target x position of cursor
272 /// access to selection anchor
273 CursorSlice & anchor();
274 /// access to selection anchor
275 CursorSlice const & anchor() const;
276 /// cache the absolute coordinate from the top inset
278 /// sets anchor to cursor position
280 /// access to owning BufferView
281 BufferView & bv() const;
282 /// get some interesting description of current position
283 void info(std::ostream & os) const;
284 /// are we in math mode (2), text mode (1) or unsure (0)?
288 /// for spellchecking
289 void replaceWord(std::string const & replacestring);
292 friend std::ostream & operator<<(std::ostream & os, LCursor const & cur);
295 /// mainly used as stack, but wee need random access
296 std::vector<CursorSlice> cursor_;
297 /// the anchor position
298 std::vector<CursorSlice> anchor_;
308 * The target x position of the cursor. This is used for when
309 * we have text like :
311 * blah blah blah blah| blah blah blah
313 * blah blah blah blah blah blah
315 * When we move onto row 3, we would like to be vertically aligned
316 * with where we were in row 1, despite the fact that row 2 is
320 // do we have a selection?
322 // are we on the way to get one?
326 // math specific stuff that could be promoted to "global" later
328 /// do we allow autocorrection
330 /// are we entering a macro name?
334 ///////////////////////////////////////////////////////////////////
336 // The part below is the non-integrated rest of the original math
337 // cursor. This should be either generalized for texted or moved
338 // back to the math insets.
340 ///////////////////////////////////////////////////////////////////
344 void insert(MathAtom const &);
346 void insert(MathArray const &);
347 /// return false for empty math insets
349 /// return false for empty math insets
351 /// called for LFUN_HOME etc
353 /// called for LFUN_END etc
355 /// called for LFUN_RIGHT and LFUN_RIGHTSEL
357 /// called for LFUN_LEFT etc
359 /// called for LFUN_UP etc
361 /// called for LFUN_DOWN etc
366 void plainInsert(MathAtom const & at);
368 void niceInsert(MathAtom const & at);
370 void niceInsert(std::string const & str);
372 /// in pixels from top of screen
373 void setScreenPos(int x, int y);
374 /// in pixels from left of screen
376 /// return the next enclosing grid inset and the cursor's index in it
377 MathGridInset * enclosingGrid(idx_type & idx) const;
378 /// adjust anchor position after deletions/insertions
379 void adjust(pos_type from, int diff);
381 MathHullInset * formula() const;
382 /// current offset in the current cell
386 bool interpret(char);
387 /// interpret name a name of a macro
388 void macroModeClose();
389 /// are we currently typing the name of a macro?
390 bool inMacroMode() const;
391 /// get access to the macro we are currently typing
392 MathUnknownInset * activeMacro();
393 /// are we currently typing '#1' or '#2' or...?
394 bool inMacroArgMode() const;
396 /// replace selected stuff with at, placing the former
397 // selection in given cell of atom
398 void handleNest(MathAtom const & at, int cell = 0);
399 /// remove this as soon as LyXFunc::getStatus is "localized"
400 //inline std::string getLastCode() { return "mathnormal"; }
402 bool isInside(InsetBase const *);
408 /// make sure cursor position is valid
410 /// mark current cursor trace for redraw
413 /// returns the normalized anchor of the selection
414 CursorSlice normalAnchor();
416 /// lock/unlock inset
419 /// hack for reveal codes
422 /// injects content of a cell into parent
424 /// split font inset etc
425 void handleFont(std::string const & font);
427 void releaseMathCursor();
428 /// are we in mathed?
429 bool inMathed() const;
430 /// are we in texted?
431 bool inTexted() const;
433 /// display a message
434 void message(std::string const & msg) const;
435 /// display an error message
436 void errorMessage(std::string const & msg) const;
439 /// moves cursor index one cell to the left
441 /// moves cursor index one cell to the right
443 /// moves cursor to end of last cell of current line
445 /// moves position somehow up or down
446 bool goUpDown(bool up);
447 /// moves position closest to (x, y) in given box
448 bool bruteFind(int x, int y, int xlow, int xhigh, int ylow, int yhigh);
449 /// moves position closest to (x, y) in current cell
450 void bruteFind2(int x, int y);
451 /// are we in a nucleus of a script inset?
454 /// the name of the macro we are currently inputting
455 std::string macroName();
456 /// where in the curent cell does the macro name start?
458 /// can we enter the inset?
459 bool openable(MathAtom const &);
462 #endif // LYXCURSOR_H