2 /* This file is part of
3 * ======================================================
5 * LyX, The Document Processor
7 * Copyright 1995-2001 the LyX Team.
9 * ====================================================== */
20 #include "commandtags.h"
21 #include "frontends/mouse_state.h"
42 /** This is not quite the correct place for this enum. I think
43 the correct would be to let each subclass of Inset declare
44 its own enum code. Actually the notion of an Inset::Code
45 should be avoided, but I am not sure how this could be done
51 TOC_CODE, // do these insets really need a code? (ale)
97 SPECIALCHAR_CODE, // 25
109 MATHMACRO_CODE, // 30
123 TEXT_TO_INSET_OFFSET = 2
139 Inset(Inset const & in, bool same_id = false);
143 virtual int ascent(BufferView *, LyXFont const &) const = 0;
145 virtual int descent(BufferView *, LyXFont const &) const = 0;
147 virtual int width(BufferView *, LyXFont const &) const = 0;
149 virtual void draw(BufferView *, LyXFont const &,
150 int baseline, float & x, bool cleared) const = 0;
151 /// update the inset representation
152 virtual void update(BufferView *, LyXFont const &, bool = false)
154 /// what appears in the minibuffer when opening
155 virtual string const editMessage() const;
157 virtual void edit(BufferView *, int x, int y, mouse_button::state button);
159 virtual void edit(BufferView *, bool front = true);
161 virtual EDITABLE editable() const;
162 /// This is called when the user clicks inside an inset
163 virtual void insetButtonPress(BufferView *, int, int, mouse_button::state) {}
164 /// This is called when the user releases the button inside an inset
165 // the bool return is used to see if we opened a dialog so that we can
166 // check this from an outer inset and open the dialog of the
167 // outer inset if that one has one!
168 virtual bool insetButtonRelease(BufferView *, int, int, mouse_button::state)
169 { return editable() == IS_EDITABLE; }
170 /// This is called when the user moves the mouse inside an inset
171 virtual void insetMotionNotify(BufferView *, int , int, mouse_button::state) {}
173 virtual bool isTextInset() const { return false; }
175 virtual bool doClearArea() const { return true; }
177 virtual bool autoDelete() const;
178 /// returns true the inset can hold an inset of given type
179 virtual bool insetAllowed(Inset::Code) const { return false; }
180 /// wrapper around the above
181 bool insetAllowed(Inset * in) const;
183 virtual void write(Buffer const *, std::ostream &) const = 0;
185 virtual void read(Buffer const *, LyXLex & lex) = 0;
186 /** returns the number of rows (\n's) of generated tex code.
187 fragile == true means, that the inset should take care about
188 fragile commands by adding a \protect before.
189 If the free_spc (freespacing) variable is set, then this inset
190 is in a free-spacing paragraph.
192 virtual int latex(Buffer const *, std::ostream &, bool fragile,
193 bool free_spc) const = 0;
195 virtual int ascii(Buffer const *,
196 std::ostream &, int linelen = 0) const = 0;
198 virtual int linuxdoc(Buffer const *, std::ostream &) const = 0;
200 virtual int docbook(Buffer const *, std::ostream &, bool) const = 0;
201 /// Updates needed features for this inset.
202 virtual void validate(LaTeXFeatures & features) const;
204 virtual bool deletable() const;
206 /// returns LyX code associated with the inset. Used for TOC, ...)
207 virtual Inset::Code lyxCode() const { return NO_CODE; }
209 virtual std::vector<string> const getLabelList() const {
210 return std::vector<string>();
214 virtual Inset * clone(Buffer const &, bool same_ids = false) const = 0;
216 /// returns true to override begin and end inset in file
217 virtual bool directWrite() const;
219 /// Returns true if the inset should be centered alone
220 virtual bool display() const { return false; }
221 /// Changes the display state of the inset
222 virtual void display(bool) {}
224 /// returns true if this inset needs a row on it's own
226 virtual bool needFullRow() const { return false; }
228 void setInsetName(string const & s) { name_ = s; }
230 string const & getInsetName() const { return name_; }
232 void setOwner(Inset * inset) { owner_ = inset; }
234 Inset * owner() const { return owner_; }
236 void parOwner(Paragraph * par) { par_owner_ = par; }
238 Paragraph * parOwner() const {return par_owner_; }
240 void setBackgroundColor(LColor::color);
242 LColor::color backgroundColor() const;
244 int x() const { return top_x; }
246 int y() const { return top_baseline; }
248 // because we could have fake text insets and have to call this
249 // inside them without cast!!!
251 virtual LyXText * getLyXText(BufferView const *,
252 bool const recursive = false) const;
254 virtual void deleteLyXText(BufferView *, bool = true) const {}
256 virtual void resizeLyXText(BufferView *, bool /*force*/= false) const {}
257 /// returns the actuall scroll-value
258 virtual int scroll(bool recursive=true) const {
259 if (!recursive || !owner_)
263 /// try to get a paragraph pointer from it's id if we have a
264 /// paragraph to give back!
265 virtual Paragraph * getParFromID(int /* id */) const {
268 /// try to get a inset pointer from it's id if we have
269 /// an inset to give back!
270 virtual Inset * getInsetFromID(int /* id */) const {
273 /// if this insets owns paragraphs (f.ex. InsetText) then it
274 /// should return it's very first one!
275 virtual Paragraph * firstParagraph() const {
280 virtual Paragraph * getFirstParagraph(int /*num*/) const {
284 /// return the cursor if we own one otherwise giv'em just the
285 /// BufferView cursor to work with.
286 virtual LyXCursor const & cursor(BufferView * bview) const;
292 /// used to toggle insets
293 // is the inset open?
294 virtual bool isOpen() const { return false; }
296 virtual void open(BufferView *) {}
298 virtual void close(BufferView *) const {}
299 /// check if the font of the char we want inserting is correct
300 /// and modify it if it is not.
301 virtual bool checkInsertChar(LyXFont &);
302 /// we need this here because collapsed insets are only EDITABLE
303 virtual void setFont(BufferView *, LyXFont const &,
304 bool toggleall = false, bool selectall = false);
306 // needed for spellchecking text
308 virtual bool allowSpellcheck() { return false; }
310 // should this inset be handled like a normal charater
311 virtual bool isChar() const { return false; }
312 // is this equivalent to a letter?
313 virtual bool isLetter() const { return false; }
314 // is this equivalent to a space (which is BTW different from
315 // a line separator)?
316 virtual bool isSpace() const { return false; }
317 // should we break lines after this inset?
318 virtual bool isLineSeparator() const { return false; }
319 // if this inset has paragraphs should they be output all as default
320 // paragraphs with "Standard" layout?
321 virtual bool forceDefaultParagraphs(Inset const *) const;
322 /** returns true if, when outputing LaTeX, font changes should
323 be closed before generating this inset. This is needed for
324 insets that may contain several paragraphs */
325 virtual bool noFontChange() const { return false; }
327 virtual void getDrawFont(LyXFont &) const {}
328 /* needed for widths which are % of something
329 returns the value of \textwidth in this inset. Most of the
330 time this is the width of the workarea, but if there is a
331 minipage somewhere, it will be the width of this minipage */
332 virtual int latexTextWidth(BufferView *) const;
334 /** Adds a LaTeX snippet to the Preview Loader for transformation
335 * into a bitmap image. Does not start the laoding process.
337 * Most insets have no interest in this capability, so the method
340 virtual void addPreview(grfx::PreviewLoader &) const {}
342 /** Find the PreviewLoader, add a LaTeX snippet to it and
343 * start the loading process.
345 * Most insets have no interest in this capability, so the method
348 virtual void generatePreview() const {}
354 mutable bool topx_set; /* have we already drawn ourself! */
356 mutable int top_baseline;
362 static unsigned int inset_id;
367 /// the paragraph in which this inset has been inserted
368 Paragraph * par_owner_;
372 LColor::color background_color_;
377 bool Inset::insetAllowed(Inset * in) const
379 return insetAllowed(in->lyxCode());
384 bool Inset::checkInsertChar(LyXFont &)
389 // Updatable Insets. These insets can be locked and receive
390 // directly user interaction. Currently used only for mathed.
391 // Note that all pure methods from Inset class are pure here too.
392 // [Alejandro 080596]
394 /** Extracted from Matthias notes:
396 * An inset can simple call LockInset in it's edit call and *ONLY*
399 * Unlocking is either done by LyX or the inset itself with a
402 * During the lock, all button and keyboard events will be modified
403 * and send to the inset through the following inset-features. Note that
404 * Inset::insetUnlock will be called from inside UnlockInset. It is meant
405 * to contain the code for restoring the menus and things like this.
407 * If a inset wishes any redraw and/or update it just has to call
410 * It's is completly irrelevant, where the inset is. UpdateInset will
411 * find it in any paragraph in any buffer.
412 * Of course the_locking_inset and the insets in the current paragraph/buffer
413 * are checked first, so no performance problem should occur.
415 class UpdatableInset : public Inset {
417 /** Dispatch result codes
418 Now that nested updatable insets are allowed, the local dispatch
419 becomes a bit complex, just two possible results (boolean)
422 DISPATCHED = the inset catched the action
423 DISPATCHED_NOUPDATE = the inset catched the action and no update
424 is needed here to redraw the inset
425 FINISHED = the inset must be unlocked as a result
427 FINISHED_RIGHT = FINISHED, but put the cursor to the RIGHT of
429 FINISHED_UP = FINISHED, but put the cursor UP of
431 FINISHED_DOWN = FINISHED, but put the cursor DOWN of
433 UNDISPATCHED = the action was not catched, it should be
434 dispatched by lower level insets
446 /// To convert old binary dispatch results
447 RESULT DISPATCH_RESULT(bool b) {
448 return b ? DISPATCHED : FINISHED;
454 UpdatableInset(UpdatableInset const & in, bool same_id = false);
456 /// check if the font of the char we want inserting is correct
457 /// and modify it if it is not.
458 virtual bool checkInsertChar(LyXFont &);
460 virtual EDITABLE editable() const;
463 virtual void toggleInsetCursor(BufferView *);
465 virtual void showInsetCursor(BufferView *, bool show = true);
467 virtual void hideInsetCursor(BufferView *);
469 virtual void fitInsetCursor(BufferView *) const;
471 virtual void getCursorPos(BufferView *, int &, int &) const {}
473 virtual void insetButtonPress(BufferView *, int x, int y, mouse_button::state button);
475 // the bool return is used to see if we opened a dialog so that we can
476 // check this from an outer inset and open the dialog of the outer inset
477 // if that one has one!
479 virtual bool insetButtonRelease(BufferView *,
480 int x, int y, mouse_button::state button);
482 virtual void insetMotionNotify(BufferView *, int x, int y, mouse_button::state state);
484 virtual void insetUnlock(BufferView *);
486 virtual void edit(BufferView *, int x, int y, mouse_button::state button);
488 virtual void edit(BufferView *, bool front = true);
490 virtual void draw(BufferView *, LyXFont const &,
491 int baseline, float & x, bool cleared) const;
493 virtual bool insertInset(BufferView *, Inset *) { return false; }
495 virtual UpdatableInset * getLockingInset() const {
496 return const_cast<UpdatableInset *>(this);
499 virtual UpdatableInset * getFirstLockingInsetOfType(Inset::Code c)
500 { return (c == lyxCode()) ? this : 0; }
502 virtual int insetInInsetY() const { return 0; }
504 virtual bool updateInsetInInset(BufferView *, Inset *)
507 virtual bool lockInsetInInset(BufferView *, UpdatableInset *)
510 virtual bool unlockInsetInInset(BufferView *, UpdatableInset *,
513 /// An updatable inset could handle lyx editing commands
514 virtual RESULT localDispatch(BufferView *, kb_action, string const &);
516 bool isCursorVisible() const { return cursor_visible_; }
518 virtual int getMaxWidth(BufferView * bv, UpdatableInset const *) const;
520 int scroll(bool recursive = true) const {
521 // We need this method to not clobber the real method in Inset
522 return Inset::scroll(recursive);
525 virtual bool showInsetDialog(BufferView *) const { return false; }
527 virtual void nodraw(bool b) const {
531 virtual bool nodraw() const {
532 return block_drawing_;
535 // needed for spellchecking text
537 virtual bool allowSpellcheck() { return false; }
539 virtual string const selectNextWordToSpellcheck(BufferView *, float & value) const;
541 virtual void selectSelectedWord(BufferView *) { return; }
543 virtual void toggleSelection(BufferView *, bool /*kill_selection*/) {
547 // needed for search/replace functionality
549 virtual bool searchForward(BufferView *, string const &,
550 bool = true, bool = false);
552 virtual bool searchBackward(BufferView *, string const &,
553 bool = true, bool = false);
557 void toggleCursorVisible() const {
558 cursor_visible_ = !cursor_visible_;
561 void setCursorVisible(bool b) const {
564 /// scrolls to absolute position in bufferview-workwidth * sx units
565 void scroll(BufferView *, float sx) const;
566 /// scrolls offset pixels
567 void scroll(BufferView *, int offset) const;
571 mutable bool cursor_visible_;
573 mutable bool block_drawing_;
577 bool UpdatableInset::checkInsertChar(LyXFont &)
583 * returns true if pointer argument is valid
584 * and points to an editable inset
586 inline bool isEditableInset(Inset * i)
588 return i && i->editable();
592 * returns true if pointer argument is valid
593 * and points to a highly editable inset
595 inline bool isHighlyEditableInset(Inset * i)
597 return i && i->editable() == Inset::HIGHLY_EDITABLE;