2 /* This file is part of
3 * ======================================================
5 * LyX, The Document Processor
7 * Copyright 1995-2000 the LyX Team.
9 * ====================================================== */
38 /** This is not quite the correct place for this enum. I think
39 the correct would be to let each subclass of Inset declare
40 its own enum code. Actually the notion of an Inset::Code
41 should be avoided, but I am not sure how this could be done
47 TOC_CODE, // do these insets really need a code? (ale)
111 enum { TEXT_TO_INSET_OFFSET = 2 };
120 Inset() { owner_ = 0; top_x = top_baseline = 0; }
124 virtual int ascent(BufferView *, LyXFont const &) const = 0;
126 virtual int descent(BufferView *, LyXFont const &) const = 0;
128 virtual int width(BufferView *, LyXFont const &) const = 0;
130 virtual void draw(BufferView *, LyXFont const &,
131 int baseline, float & x, bool cleared) const = 0;
132 /// update the inset representation
133 virtual void update(BufferView *, LyXFont const &, bool =false)
136 virtual LyXFont ConvertFont(LyXFont font);
137 /// what appears in the minibuffer when opening
138 virtual const char * EditMessage() const;
140 virtual void Edit(BufferView *, int x, int y, unsigned int button);
142 virtual EDITABLE Editable() const;
143 /// This is called when the user clicks inside an inset
144 virtual void InsetButtonPress(BufferView *, int, int, int) {}
145 /// This is called when the user releases the button inside an inset
146 virtual void InsetButtonRelease(BufferView *, int, int, int) {}
147 /// This is caleld when the user moves the mouse inside an inset
148 virtual void InsetMotionNotify(BufferView *, int , int , int) {}
150 virtual bool IsTextInset() const { return false; }
152 virtual bool doClearArea() const { return true; }
154 virtual bool AutoDelete() const;
156 virtual void Write(Buffer const *, std::ostream &) const = 0;
158 virtual void Read(Buffer const *, LyXLex & lex) = 0;
159 /** returns the number of rows (\n's) of generated tex code.
160 fragile == true means, that the inset should take care about
161 fragile commands by adding a \protect before.
162 If the free_spc (freespacing) variable is set, then this inset
163 is in a free-spacing paragraph.
165 virtual int Latex(Buffer const *, std::ostream &, bool fragile,
166 bool free_spc) const = 0;
168 virtual int Ascii(Buffer const *, std::ostream &) const = 0;
170 virtual int Linuxdoc(Buffer const *, std::ostream &) const = 0;
172 virtual int DocBook(Buffer const *, std::ostream &) const = 0;
173 /// Updates needed features for this inset.
174 virtual void Validate(LaTeXFeatures & features) const;
176 virtual bool Deletable() const;
178 /// returns LyX code associated with the inset. Used for TOC, ...)
179 virtual Inset::Code LyxCode() const { return NO_CODE; }
181 virtual std::vector<string> getLabelList() const {
182 return std::vector<string>();
186 virtual Inset * Clone() const = 0;
188 /// returns true to override begin and end inset in file
189 virtual bool DirectWrite() const;
191 /// Returns true if the inset should be centered alone
192 virtual bool display() const { return false; }
193 /// Changes the display state of the inset
194 virtual void display(bool) {}
196 /// returns true if this inset needs a row on it's own
198 virtual bool needFullRow() const { return false; }
200 virtual bool InsertInsetAllowed(Inset *) const { return false; }
202 virtual void setInsetName(const char * s) { name = s; }
204 virtual string getInsetName() const { return name; }
206 virtual void setOwner(Inset * inset) { owner_ = inset; }
208 virtual Inset * owner() const { return owner_; }
210 int x() const { return top_x; }
212 int y() const { return top_baseline; }
217 mutable int top_baseline;
227 // Updatable Insets. These insets can be locked and receive
228 // directly user interaction. Currently used only for mathed.
229 // Note that all pure methods from Inset class are pure here too.
230 // [Alejandro 080596]
232 /** Extracted from Matthias notes:
234 * An inset can simple call LockInset in it's edit call and *ONLY*
237 * Unlocking is either done by LyX or the inset itself with a
240 * During the lock, all button and keyboard events will be modified
241 * and send to the inset through the following inset-features. Note that
242 * Inset::InsetUnlock will be called from inside UnlockInset. It is meant
243 * to contain the code for restoring the menus and things like this.
245 * If a inset wishes any redraw and/or update it just has to call
248 * It's is completly irrelevant, where the inset is. UpdateInset will
249 * find it in any paragraph in any buffer.
250 * Of course the_locking_inset and the insets in the current paragraph/buffer
251 * are checked first, so no performance problem should occur.
253 class UpdatableInset: public Inset {
255 /** Dispatch result codes
256 Now that nested updatable insets are allowed, the local dispatch
257 becomes a bit complex, just two possible results (boolean)
260 DISPATCHED = the inset catched the action
261 DISPATCHED_NOUPDATE = the inset catched the action and no update
262 is needed here to redraw the inset
263 FINISHED = the inset must be unlocked as a result
265 UNDISPATCHED = the action was not catched, it should be
266 dispatched by lower level insets
275 /// To convert old binary dispatch results
276 RESULT DISPATCH_RESULT(bool b) {
277 return b ? DISPATCHED : FINISHED;
281 UpdatableInset() { scx = mx_scx = 0; }
283 virtual EDITABLE Editable() const;
285 /// may call ToggleLockedInsetCursor
286 virtual void ToggleInsetCursor(BufferView *);
288 virtual void ShowInsetCursor(BufferView *);
290 virtual void HideInsetCursor(BufferView *);
292 virtual void GetCursorPos(BufferView *, int &, int &) const {}
294 virtual void InsetButtonPress(BufferView *, int x, int y, int button);
296 virtual void InsetButtonRelease(BufferView *,
297 int x, int y, int button);
299 virtual void InsetKeyPress(XKeyEvent * ev);
301 virtual void InsetMotionNotify(BufferView *, int x, int y, int state);
303 virtual void InsetUnlock(BufferView *);
305 virtual void Edit(BufferView *, int x, int y, unsigned int button);
307 virtual void draw(BufferView *, LyXFont const &,
308 int baseline, float & x, bool cleared) const;
310 virtual void SetFont(BufferView *, LyXFont const &,
311 bool toggleall = false);
313 virtual bool InsertInset(BufferView *, Inset *) { return false; }
315 virtual bool InsertInsetAllowed(Inset *) const { return true; }
317 virtual UpdatableInset * GetLockingInset() { return this; }
319 virtual UpdatableInset * GetFirstLockingInsetOfType(Inset::Code c)
320 { return (c == LyxCode()) ? this : 0; }
322 virtual int InsetInInsetY() { return 0; }
324 virtual bool UpdateInsetInInset(BufferView *, Inset *)
327 virtual bool LockInsetInInset(BufferView *, UpdatableInset *)
330 virtual bool UnlockInsetInInset(BufferView *, UpdatableInset *,
333 /// An updatable inset could handle lyx editing commands
334 virtual RESULT LocalDispatch(BufferView *, int, string const &);
336 virtual bool isCursorVisible() const { return cursor_visible; }
338 virtual int getMaxWidth(Painter & pain, UpdatableInset const *) const;
340 /// because we could have fake text insets and have to call this
341 /// inside them without cast!!!
342 virtual LyXText * getLyXText(BufferView *) const { return 0; }
343 virtual void deleteLyXText(BufferView *) {}
347 mutable bool cursor_visible;