2 /* This file is part of
3 * ======================================================
5 * LyX, The Document Processor
7 * Copyright 1995-2001 the LyX Team.
9 * ====================================================== */
21 #include "commandtags.h"
39 /** This is not quite the correct place for this enum. I think
40 the correct would be to let each subclass of Inset declare
41 its own enum code. Actually the notion of an Inset::Code
42 should be avoided, but I am not sure how this could be done
48 TOC_CODE, // do these insets really need a code? (ale)
94 SPECIALCHAR_CODE, // 25
106 MATHMACRO_CODE, // 30
120 TEXT_TO_INSET_OFFSET = 2
136 Inset(Inset const & in, bool same_id = false);
140 virtual int ascent(BufferView *, LyXFont const &) const = 0;
142 virtual int descent(BufferView *, LyXFont const &) const = 0;
144 virtual int width(BufferView *, LyXFont const &) const = 0;
146 virtual void draw(BufferView *, LyXFont const &,
147 int baseline, float & x, bool cleared) const = 0;
148 /// update the inset representation
149 virtual void update(BufferView *, LyXFont const &, bool = false)
151 /// what appears in the minibuffer when opening
152 virtual string const editMessage() const;
154 virtual void edit(BufferView *, int x, int y, unsigned int button);
156 virtual void edit(BufferView *, bool front = true);
158 virtual EDITABLE editable() const;
159 /// This is called when the user clicks inside an inset
160 virtual void insetButtonPress(BufferView *, int, int, int) {}
161 /// This is called when the user releases the button inside an inset
162 virtual void insetButtonRelease(BufferView *, int, int, int) {}
163 /// This is called when the user moves the mouse inside an inset
164 virtual void insetMotionNotify(BufferView *, int , int , int) {}
166 virtual bool isTextInset() const { return false; }
168 virtual bool doClearArea() const { return true; }
170 virtual bool autoDelete() const;
171 /// returns true the inset can hold an inset of given type
172 virtual bool insetAllowed(Inset::Code) const { return false; }
173 /// wrapper around the above
174 bool insetAllowed(Inset * in) const;
176 virtual void write(Buffer const *, std::ostream &) const = 0;
178 virtual void read(Buffer const *, LyXLex & lex) = 0;
179 /** returns the number of rows (\n's) of generated tex code.
180 fragile == true means, that the inset should take care about
181 fragile commands by adding a \protect before.
182 If the free_spc (freespacing) variable is set, then this inset
183 is in a free-spacing paragraph.
185 virtual int latex(Buffer const *, std::ostream &, bool fragile,
186 bool free_spc) const = 0;
188 virtual int ascii(Buffer const *,
189 std::ostream &, int linelen = 0) const = 0;
191 virtual int linuxdoc(Buffer const *, std::ostream &) const = 0;
193 virtual int docbook(Buffer const *, std::ostream &) const = 0;
194 /// Updates needed features for this inset.
195 virtual void validate(LaTeXFeatures & features) const;
197 virtual bool deletable() const;
199 /// returns LyX code associated with the inset. Used for TOC, ...)
200 virtual Inset::Code lyxCode() const { return NO_CODE; }
202 virtual std::vector<string> const getLabelList() const {
203 return std::vector<string>();
207 virtual Inset * clone(Buffer const &, bool same_ids = false) const = 0;
209 /// returns true to override begin and end inset in file
210 virtual bool directWrite() const;
212 /// Returns true if the inset should be centered alone
213 virtual bool display() const { return false; }
214 /// Changes the display state of the inset
215 virtual void display(bool) {}
217 /// returns true if this inset needs a row on it's own
219 virtual bool needFullRow() const { return false; }
221 void setInsetName(string const & s) { name_ = s; }
223 string const & getInsetName() const { return name_; }
225 void setOwner(Inset * inset) { owner_ = inset; }
227 Inset * owner() const { return owner_; }
229 void setBackgroundColor(LColor::color);
231 LColor::color backgroundColor() const;
233 int x() const { return top_x; }
235 int y() const { return top_baseline; }
237 // because we could have fake text insets and have to call this
238 // inside them without cast!!!
240 virtual LyXText * getLyXText(BufferView const *,
241 bool const recursive = false) const;
243 virtual void deleteLyXText(BufferView *, bool = true) const {}
245 virtual void resizeLyXText(BufferView *, bool /*force*/= false) const {}
246 /// returns the actuall scroll-value
247 virtual int scroll(bool recursive=true) const {
248 if (!recursive || !owner_)
252 /// try to get a paragraph pointer from it's id if we have a
253 /// paragraph to give back!
254 virtual Paragraph * getParFromID(int /* id */) const {
257 /// try to get a inset pointer from it's id if we have
258 /// an inset to give back!
259 virtual Inset * getInsetFromID(int /* id */) const {
262 /// if this insets owns paragraphs (f.ex. InsetText) then it
263 /// should return it's very first one!
264 virtual Paragraph * firstParagraph() const {
269 virtual Paragraph * getFirstParagraph(int /*num*/) const {
273 /// return the cursor if we own one otherwise giv'em just the
274 /// BufferView cursor to work with.
275 virtual LyXCursor const & cursor(BufferView * bview) const;
281 /// used to toggle insets
282 // is the inset open?
283 virtual bool isOpen() const { return false; }
285 virtual void open(BufferView *) {}
287 virtual void close(BufferView *) const {}
288 /// check if the font of the char we want inserting is correct
289 /// and modify it if it is not.
290 virtual bool checkInsertChar(LyXFont &);
291 /// we need this here because collapsed insets are only EDITABLE
292 virtual void setFont(BufferView *, LyXFont const &,
293 bool toggleall = false, bool selectall = false);
295 // needed for spellchecking text
297 virtual bool allowSpellcheck() { return false; }
299 // is this equivalent to a letter?
300 virtual bool isLetter() const { return false; }
301 // is this equivalent to a space?
302 virtual bool isSpace() const { return false; }
308 mutable bool topx_set; /* have we already drawn ourself! */
310 mutable int top_baseline;
316 static unsigned int inset_id;
324 LColor::color background_color_;
329 bool Inset::insetAllowed(Inset * in) const
331 return insetAllowed(in->lyxCode());
336 bool Inset::checkInsertChar(LyXFont &)
341 // Updatable Insets. These insets can be locked and receive
342 // directly user interaction. Currently used only for mathed.
343 // Note that all pure methods from Inset class are pure here too.
344 // [Alejandro 080596]
346 /** Extracted from Matthias notes:
348 * An inset can simple call LockInset in it's edit call and *ONLY*
351 * Unlocking is either done by LyX or the inset itself with a
354 * During the lock, all button and keyboard events will be modified
355 * and send to the inset through the following inset-features. Note that
356 * Inset::insetUnlock will be called from inside UnlockInset. It is meant
357 * to contain the code for restoring the menus and things like this.
359 * If a inset wishes any redraw and/or update it just has to call
362 * It's is completly irrelevant, where the inset is. UpdateInset will
363 * find it in any paragraph in any buffer.
364 * Of course the_locking_inset and the insets in the current paragraph/buffer
365 * are checked first, so no performance problem should occur.
367 class UpdatableInset : public Inset {
369 /** Dispatch result codes
370 Now that nested updatable insets are allowed, the local dispatch
371 becomes a bit complex, just two possible results (boolean)
374 DISPATCHED = the inset catched the action
375 DISPATCHED_NOUPDATE = the inset catched the action and no update
376 is needed here to redraw the inset
377 FINISHED = the inset must be unlocked as a result
379 FINISHED_RIGHT = FINISHED, but put the cursor to the RIGHT of
381 FINISHED_UP = FINISHED, but put the cursor UP of
383 FINISHED_DOWN = FINISHED, but put the cursor DOWN of
385 UNDISPATCHED = the action was not catched, it should be
386 dispatched by lower level insets
398 /// To convert old binary dispatch results
399 RESULT DISPATCH_RESULT(bool b) {
400 return b ? DISPATCHED : FINISHED;
406 UpdatableInset(UpdatableInset const & in, bool same_id = false);
408 /// check if the font of the char we want inserting is correct
409 /// and modify it if it is not.
410 virtual bool checkInsertChar(LyXFont &);
412 virtual EDITABLE editable() const;
414 /// may call ToggleLockedInsetCursor
415 virtual void toggleInsetCursor(BufferView *);
417 virtual void showInsetCursor(BufferView *, bool show = true);
419 virtual void hideInsetCursor(BufferView *);
421 virtual void fitInsetCursor(BufferView *) const;
423 virtual void getCursorPos(BufferView *, int &, int &) const {}
425 virtual void insetButtonPress(BufferView *, int x, int y, int button);
427 virtual void insetButtonRelease(BufferView *,
428 int x, int y, int button);
430 virtual void insetKeyPress(XKeyEvent * ev);
432 virtual void insetMotionNotify(BufferView *, int x, int y, int state);
434 virtual void insetUnlock(BufferView *);
436 virtual void edit(BufferView *, int x, int y, unsigned int button);
438 virtual void edit(BufferView *, bool front = true);
440 virtual void draw(BufferView *, LyXFont const &,
441 int baseline, float & x, bool cleared) const;
443 virtual bool insertInset(BufferView *, Inset *) { return false; }
445 virtual UpdatableInset * getLockingInset() const {
446 return const_cast<UpdatableInset *>(this);
449 virtual UpdatableInset * getFirstLockingInsetOfType(Inset::Code c)
450 { return (c == lyxCode()) ? this : 0; }
452 virtual unsigned int insetInInsetY() { return 0; }
454 virtual bool updateInsetInInset(BufferView *, Inset *)
457 virtual bool lockInsetInInset(BufferView *, UpdatableInset *)
460 virtual bool unlockInsetInInset(BufferView *, UpdatableInset *,
463 /// An updatable inset could handle lyx editing commands
464 virtual RESULT localDispatch(BufferView *, kb_action, string const &);
466 bool isCursorVisible() const { return cursor_visible_; }
468 virtual int getMaxWidth(BufferView * bv, UpdatableInset const *) const;
470 int scroll(bool recursive = true) const {
471 // We need this method to not clobber the real method in Inset
472 return Inset::scroll(recursive);
475 virtual bool showInsetDialog(BufferView *) const { return false; }
477 virtual void nodraw(bool b) const {
481 virtual bool nodraw() const {
482 return block_drawing_;
485 // needed for spellchecking text
487 virtual bool allowSpellcheck() { return false; }
489 virtual string const selectNextWordToSpellcheck(BufferView *, float & value) const;
491 virtual void selectSelectedWord(BufferView *) { return; }
493 virtual void toggleSelection(BufferView *, bool /*kill_selection*/) {
497 // needed for search/replace functionality
499 virtual bool searchForward(BufferView *, string const &,
500 bool const & = true, bool const & = false);
502 virtual bool searchBackward(BufferView *, string const &,
503 bool const & = true, bool const & = false);
507 void toggleCursorVisible() const {
508 cursor_visible_ = !cursor_visible_;
511 void setCursorVisible(bool b) const {
514 /// scrolls to absolute position in bufferview-workwidth * sx units
515 void scroll(BufferView *, float sx) const;
516 /// scrolls offset pixels
517 void scroll(BufferView *, int offset) const;
521 mutable bool cursor_visible_;
523 mutable bool block_drawing_;
527 bool UpdatableInset::checkInsertChar(LyXFont &)
533 * returns true if pointer argument is valid
534 * and points to an editable inset
536 inline bool isEditableInset(Inset * i)
538 return i && i->editable();
542 * returns true if pointer argument is valid
543 * and points to a highly editable inset
545 inline bool isHighlyEditableInset(Inset * i)
547 return i && i->editable() == Inset::HIGHLY_EDITABLE;