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 "dispatchresult.h"
16 #include "dociterator.h"
27 class MathUnknownInset;
31 /// The cursor class describes the position of a cursor within a document.
33 // The public inheritance should go in favour of a suitable data member
34 // (or maybe private inheritance) at some point of time.
35 class LCursor : public DocIterator {
37 /// create the cursor of a BufferView
38 explicit LCursor(BufferView & bv);
40 /// dispatch from innermost inset upwards
41 DispatchResult dispatch(FuncRequest const & cmd);
42 /// are we willing to handle this event?
43 bool getStatus(FuncRequest const & cmd, FuncStatus & flag);
45 /// add a new cursor slice
46 void push(InsetBase & inset);
47 /// add a new cursor slice, place cursor on left end
48 void pushLeft(InsetBase & inset);
49 /// pop one level off the cursor
51 /// pop one slice off the cursor stack and go left
53 /// pop one slice off the cursor stack and go right
56 void setCursor(DocIterator const & it, bool sel);
62 bool selection() const { return selection_; }
64 bool & selection() { return selection_; }
65 /// did we place the anchor?
66 bool mark() const { return mark_; }
67 /// did we place the anchor?
68 bool & mark() { return mark_; }
71 /// set selection at given position
72 void setSelection(DocIterator const & where, size_t n);
74 void clearSelection();
75 /// access start of selection
76 CursorSlice selBegin() const;
77 /// access end of selection
78 CursorSlice selEnd() const;
79 /// access start of selection
80 DocIterator selectionBegin() const;
81 /// access start of selection
82 DocIterator selectionEnd() const;
84 std::string grabSelection();
86 void eraseSelection();
88 std::string grabAndEraseSelection();
89 // other selection methods
96 /// pastes n-th element of cut buffer
97 void selPaste(size_t n);
99 void selHandle(bool selecting);
100 /// clears or deletes selection depending on lyxrc setting
101 void selClearOrDel();
103 std::string selectionAsString(bool label) const;
105 void paste(std::string const & data);
107 std::string currentState();
109 /// auto-correct mode
110 bool autocorrect() const { return autocorrect_; }
111 /// auto-correct mode
112 bool & autocorrect() { return autocorrect_; }
113 /// are we entering a macro name?
114 bool macromode() const { return macromode_; }
115 /// are we entering a macro name?
116 bool & macromode() { return macromode_; }
117 /// returns x,y position
118 void getPos(int & x, int & y) const;
119 /// returns cursor dimension
120 void getDim(int & asc, int & desc) const;
125 /// move one step to the left
127 /// move one step to the right
131 void insert(InsetBase *);
132 /// insert a single char
135 void insert(std::string const & str);
137 /// write acess to target x position of cursor
139 /// return target x position of cursor
140 int x_target() const;
141 /// clear target x position of cursor
144 /// access to normalized selection anchor
145 CursorSlice anchor() const;
146 /// sets anchor to cursor position
148 /// access to owning BufferView
149 BufferView & bv() const;
150 /// access to owning Buffer
151 Buffer & buffer() const;
152 /// get some interesting description of top position
153 void info(std::ostream & os) const;
154 /// are we in math mode (2), text mode (1) or unsure (0)?
156 /// reset cursor bottom to the beginning of the given inset
157 // (sort of 'chroot' environment...)
158 void reset(InsetBase &);
159 /// for spellchecking
160 void replaceWord(std::string const & replacestring);
161 /// the event was not (yet) dispatched
163 /// the event was already dispatched
165 /// don't call update() when done
169 friend std::ostream & operator<<(std::ostream & os, LCursor const & cur);
175 /// the anchor position
179 DispatchResult disp_;
183 * The target x position of the cursor. This is used for when
184 * we have text like :
186 * blah blah blah blah| blah blah blah
188 * blah blah blah blah blah blah
190 * When we move onto row 3, we would like to be vertically aligned
191 * with where we were in row 1, despite the fact that row 2 is
195 /// do we have a selection?
197 /// are we on the way to get one?
201 // math specific stuff that could be promoted to "global" later
203 /// do we allow autocorrection
205 /// are we entering a macro name?
209 ///////////////////////////////////////////////////////////////////
211 // The part below is the non-integrated rest of the original math
212 // cursor. This should be either generalized for texted or moved
213 // back to the math insets.
215 ///////////////////////////////////////////////////////////////////
219 void insert(MathAtom const &);
221 void insert(MathArray const &);
222 /// return false for empty math insets
224 /// return false for empty math insets
226 /// called for LFUN_UP etc
228 /// called for LFUN_DOWN etc
233 void plainInsert(MathAtom const & at);
235 void niceInsert(MathAtom const & at);
237 void niceInsert(std::string const & str);
239 /// in pixels from top of screen
240 void setScreenPos(int x, int y);
241 /// in pixels from left of screen
243 /// current offset in the top cell
244 /// interpret name a name of a macro
245 void macroModeClose();
246 /// are we currently typing the name of a macro?
247 bool inMacroMode() const;
248 /// get access to the macro we are currently typing
249 MathUnknownInset * activeMacro();
251 /// replace selected stuff with at, placing the former
252 // selection in given cell of atom
253 void handleNest(MathAtom const & at, int cell = 0);
255 bool isInside(InsetBase const *);
257 /// make sure cursor position is valid
259 /// mark current cursor trace for redraw
262 /// hack for reveal codes
265 /// injects content of a cell into parent
267 /// split font inset etc
268 void handleFont(std::string const & font);
270 /// display a message
271 void message(std::string const & msg) const;
272 /// display an error message
273 void errorMessage(std::string const & msg) const;
275 std::string getPossibleLabel();
277 /// moves position somehow up or down
278 bool goUpDown(bool up);
280 /// the name of the macro we are currently inputting
281 std::string macroName();
282 /// where in the curent cell does the macro name start?
284 /// can we enter the inset?
285 bool openable(MathAtom const &) const;
287 Encoding const * getEncoding() const;
290 /// moves position closest to (x, y) in current cell
291 void bruteFind2(int x, int y);
292 /// moves position closest to (x, y) in given box
293 bool bruteFind(int x, int y, int xlow, int xhigh, int ylow, int yhigh);
296 #endif // LYXCURSOR_H