4 * This file is part of LyX, the document processor.
5 * Licence details can be found in the file COPYING.
7 * \author Alejandro Aguilar Sierra
9 * \author Lars Gullik Bjønnes
10 * \author Matthias Ettrich
12 * Full author contact details are available in file CREDITS
20 #include "insetbase.h"
21 #include "support/types.h"
45 class Inset : public InsetBase {
47 /** This is not quite the correct place for this enum. I think
48 the correct would be to let each subclass of Inset declare
49 its own enum code. Actually the notion of an Inset::Code
50 should be avoided, but I am not sure how this could be done
56 TOC_CODE, // do these insets really need a code? (ale)
106 SPECIALCHAR_CODE, // 25
118 MATHMACRO_CODE, // 30
140 TEXT_TO_INSET_OFFSET = 2
154 typedef dispatch_result RESULT;
159 Inset(Inset const & in);
161 int ascent(BufferView *, LyXFont const &) const;
163 int descent(BufferView *, LyXFont const &) const;
165 int width(BufferView *, LyXFont const &) const;
166 /// update the inset representation
167 virtual void update(BufferView *, bool = false)
169 /// what appears in the minibuffer when opening
170 virtual string const editMessage() const;
172 virtual EDITABLE editable() const;
174 virtual bool isTextInset() const { return false; }
175 /// return true if the inset should be removed automatically
176 virtual bool autoDelete() const;
177 /// returns true the inset can hold an inset of given type
178 virtual bool insetAllowed(Inset::Code) const { return false; }
179 /// wrapper around the above
180 bool insetAllowed(Inset * in) const;
182 virtual void write(Buffer const *, std::ostream &) const = 0;
184 virtual void read(Buffer const *, LyXLex & lex) = 0;
185 /// returns the number of rows (\n's) of generated tex code.
186 virtual int latex(Buffer const *, std::ostream &,
187 LatexRunParams const &) const = 0;
189 virtual int ascii(Buffer const *,
190 std::ostream &, int linelen = 0) const = 0;
192 virtual int linuxdoc(Buffer const *, std::ostream &) const = 0;
194 virtual int docbook(Buffer const *, std::ostream &, bool) const = 0;
195 /// Updates needed features for this inset.
196 virtual void validate(LaTeXFeatures & features) const;
198 /// returns LyX code associated with the inset. Used for TOC, ...)
199 virtual Inset::Code lyxCode() const { return NO_CODE; }
201 virtual std::vector<string> const getLabelList() const {
202 return std::vector<string>();
206 virtual Inset * clone(Buffer const &) const = 0;
208 /// returns true to override begin and end inset in file
209 virtual bool directWrite() const;
211 /// Returns true if the inset should be centered alone
212 virtual bool display() const { return false; }
213 /// Changes the display state of the inset
214 virtual void display(bool) {}
216 /// returns true if this inset needs a row on it's own
218 virtual bool needFullRow() const { return false; }
220 void setInsetName(string const & s) { name_ = s; }
222 string const & getInsetName() const { return name_; }
224 void setOwner(Inset * inset) { owner_ = inset; }
226 Inset * owner() const { return owner_; }
228 void parOwner(Paragraph * par) { par_owner_ = par; }
230 Paragraph * parOwner() const { return par_owner_; }
232 void setBackgroundColor(LColor::color);
234 LColor::color backgroundColor() const;
236 int x() const { return top_x; }
238 int y() const { return top_baseline; }
240 // because we could have fake text insets and have to call this
241 // inside them without cast!!!
243 virtual LyXText * getLyXText(BufferView const *,
244 bool const recursive = false) const;
246 virtual void deleteLyXText(BufferView *, bool = true) const {}
248 virtual void resizeLyXText(BufferView *, bool /*force*/= false) const {}
249 /// returns the actuall scroll-value
250 virtual int scroll(bool recursive=true) const {
251 if (!recursive || !owner_)
256 /// try to get a inset pointer from it's id if we have
257 /// an inset to give back!
258 virtual Inset * getInsetFromID(int /*id*/) const { return 0; }
259 /// if this insets owns paragraphs (f.ex. InsetText) then it
260 /// should return it's very first one!
261 virtual ParagraphList * getParagraphs(int /*num*/) const { return 0; }
263 virtual bool haveParagraphs() const {
267 /// return the cursor if we own one otherwise giv'em just the
268 /// BufferView cursor to work with.
269 virtual LyXCursor const & cursor(BufferView * bview) const;
275 /// used to toggle insets
276 // is the inset open?
277 virtual bool isOpen() const { return false; }
279 virtual void open(BufferView *) {}
281 virtual void close(BufferView *) const {}
282 /// check if the font of the char we want inserting is correct
283 /// and modify it if it is not.
284 virtual bool checkInsertChar(LyXFont &);
285 /// we need this here because collapsed insets are only EDITABLE
286 virtual void setFont(BufferView *, LyXFont const &,
287 bool toggleall = false, bool selectall = false);
289 // needed for spellchecking text
291 virtual bool allowSpellcheck() const { return false; }
293 // should this inset be handled like a normal charater
294 virtual bool isChar() const { return false; }
295 // is this equivalent to a letter?
296 virtual bool isLetter() const { return false; }
297 // is this equivalent to a space (which is BTW different from
298 // a line separator)?
299 virtual bool isSpace() const { return false; }
300 // should we break lines after this inset?
301 virtual bool isLineSeparator() const { return false; }
302 // if this inset has paragraphs should they be output all as default
303 // paragraphs with "Standard" layout?
304 virtual bool forceDefaultParagraphs(Inset const *) const;
305 /** returns true if, when outputing LaTeX, font changes should
306 be closed before generating this inset. This is needed for
307 insets that may contain several paragraphs */
308 virtual bool noFontChange() const { return false; }
310 virtual void getDrawFont(LyXFont &) const {}
311 /* needed for widths which are % of something
312 returns the value of \textwidth in this inset. Most of the
313 time this is the width of the workarea, but if there is a
314 minipage somewhere, it will be the width of this minipage */
315 virtual int latexTextWidth(BufferView *) const;
317 /// mark the inset contents as erased (for change tracking)
318 virtual void markErased() {}
320 /** Adds a LaTeX snippet to the Preview Loader for transformation
321 * into a bitmap image. Does not start the laoding process.
323 * Most insets have no interest in this capability, so the method
326 virtual void addPreview(grfx::PreviewLoader &) const {}
328 /** Find the PreviewLoader, add a LaTeX snippet to it and
329 * start the loading process.
331 * Most insets have no interest in this capability, so the method
334 virtual void generatePreview() const {}
340 mutable int top_baseline;
346 static unsigned int inset_id;
351 /// the paragraph in which this inset has been inserted
352 Paragraph * par_owner_;
356 LColor::color background_color_;
361 bool Inset::insetAllowed(Inset * in) const
363 return insetAllowed(in->lyxCode());
368 bool Inset::checkInsertChar(LyXFont &)
374 * returns true if pointer argument is valid
375 * and points to an editable inset
377 inline bool isEditableInset(Inset const * i)
379 return i && i->editable();
383 * returns true if pointer argument is valid
384 * and points to a highly editable inset
386 inline bool isHighlyEditableInset(Inset const * i)
388 return i && i->editable() == Inset::HIGHLY_EDITABLE;