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)
108 SPECIALCHAR_CODE, // 25
120 MATHMACRO_CODE, // 30
142 TEXT_TO_INSET_OFFSET = 2
156 typedef dispatch_result RESULT;
161 Inset(Inset const & in);
163 virtual void dimension(BufferView *, LyXFont const &, Dimension &) const = 0;
165 int ascent(BufferView *, LyXFont const &) const;
167 int descent(BufferView *, LyXFont const &) const;
169 int width(BufferView *, LyXFont const &) const;
170 /// update the inset representation
171 virtual void update(BufferView *, bool = false)
173 /// what appears in the minibuffer when opening
174 virtual string const editMessage() const;
176 virtual EDITABLE editable() const;
178 virtual bool isTextInset() const { return false; }
179 /// return true if the inset should be removed automatically
180 virtual bool autoDelete() const;
181 /// returns true the inset can hold an inset of given type
182 virtual bool insetAllowed(Inset::Code) const { return false; }
183 /// wrapper around the above
184 bool insetAllowed(Inset * in) const;
186 virtual void write(Buffer const *, std::ostream &) const = 0;
188 virtual void read(Buffer const *, LyXLex & lex) = 0;
189 /// returns the number of rows (\n's) of generated tex code.
190 virtual int latex(Buffer const *, std::ostream &,
191 LatexRunParams const &) const = 0;
193 virtual int ascii(Buffer const *,
194 std::ostream &, int linelen = 0) const = 0;
196 virtual int linuxdoc(Buffer const *, std::ostream &) const = 0;
198 virtual int docbook(Buffer const *, std::ostream &, bool) const = 0;
199 /// Updates needed features for this inset.
200 virtual void validate(LaTeXFeatures & features) const;
202 /// returns LyX code associated with the inset. Used for TOC, ...)
203 virtual Inset::Code lyxCode() const { return NO_CODE; }
205 virtual std::vector<string> const getLabelList() const {
206 return std::vector<string>();
210 virtual Inset * clone(Buffer const &) const = 0;
212 /// returns true to override begin and end inset in file
213 virtual bool directWrite() const;
215 /// Returns true if the inset should be centered alone
216 virtual bool display() const { return false; }
217 /// Changes the display state of the inset
218 virtual void display(bool) {}
220 /// returns true if this inset needs a row on it's own
222 virtual bool needFullRow() const { return false; }
224 void setInsetName(string const & s) { name_ = s; }
226 string const & getInsetName() const { return name_; }
228 void setOwner(Inset * inset) { owner_ = inset; }
230 Inset * owner() const { return owner_; }
232 void parOwner(Paragraph * par) { par_owner_ = par; }
234 Paragraph * parOwner() const { return par_owner_; }
236 void setBackgroundColor(LColor::color);
238 LColor::color backgroundColor() const;
240 int x() const { return top_x; }
242 int y() const { return top_baseline; }
244 // because we could have fake text insets and have to call this
245 // inside them without cast!!!
247 virtual LyXText * getLyXText(BufferView const *,
248 bool const recursive = false) const;
250 virtual void deleteLyXText(BufferView *, bool = true) const {}
252 virtual void resizeLyXText(BufferView *, bool /*force*/= false) const {}
253 /// returns the actuall scroll-value
254 virtual int scroll(bool recursive=true) const {
255 if (!recursive || !owner_)
260 /// try to get a inset pointer from it's id if we have
261 /// an inset to give back!
262 virtual Inset * getInsetFromID(int /*id*/) const { return 0; }
263 /// if this insets owns paragraphs (f.ex. InsetText) then it
264 /// should return it's very first one!
265 virtual ParagraphList * getParagraphs(int /*num*/) const { return 0; }
267 virtual bool haveParagraphs() const {
271 /// return the cursor if we own one otherwise giv'em just the
272 /// BufferView cursor to work with.
273 virtual LyXCursor const & cursor(BufferView * bview) const;
279 /// used to toggle insets
280 // is the inset open?
281 virtual bool isOpen() const { return false; }
283 virtual void open(BufferView *) {}
285 virtual void close(BufferView *) const {}
286 /// check if the font of the char we want inserting is correct
287 /// and modify it if it is not.
288 virtual bool checkInsertChar(LyXFont &);
289 /// we need this here because collapsed insets are only EDITABLE
290 virtual void setFont(BufferView *, LyXFont const &,
291 bool toggleall = false, bool selectall = false);
293 // needed for spellchecking text
295 virtual bool allowSpellcheck() const { return false; }
297 // should this inset be handled like a normal charater
298 virtual bool isChar() const { return false; }
299 // is this equivalent to a letter?
300 virtual bool isLetter() const { return false; }
301 // is this equivalent to a space (which is BTW different from
302 // a line separator)?
303 virtual bool isSpace() const { return false; }
304 // should we break lines after this inset?
305 virtual bool isLineSeparator() const { return false; }
306 // if this inset has paragraphs should they be output all as default
307 // paragraphs with "Standard" layout?
308 virtual bool forceDefaultParagraphs(Inset const *) const;
309 /** returns true if, when outputing LaTeX, font changes should
310 be closed before generating this inset. This is needed for
311 insets that may contain several paragraphs */
312 virtual bool noFontChange() const { return false; }
314 virtual void getDrawFont(LyXFont &) const {}
315 /* needed for widths which are % of something
316 returns the value of \textwidth in this inset. Most of the
317 time this is the width of the workarea, but if there is a
318 minipage somewhere, it will be the width of this minipage */
319 virtual int latexTextWidth(BufferView *) const;
321 /// mark the inset contents as erased (for change tracking)
322 virtual void markErased() {}
324 /** Adds a LaTeX snippet to the Preview Loader for transformation
325 * into a bitmap image. Does not start the laoding process.
327 * Most insets have no interest in this capability, so the method
330 virtual void addPreview(grfx::PreviewLoader &) const {}
332 /** Find the PreviewLoader, add a LaTeX snippet to it and
333 * start the loading process.
335 * Most insets have no interest in this capability, so the method
338 virtual void generatePreview() const {}
344 mutable int top_baseline;
350 static unsigned int inset_id;
355 /// the paragraph in which this inset has been inserted
356 Paragraph * par_owner_;
360 LColor::color background_color_;
365 bool Inset::insetAllowed(Inset * in) const
367 return insetAllowed(in->lyxCode());
372 bool Inset::checkInsertChar(LyXFont &)
378 * returns true if pointer argument is valid
379 * and points to an editable inset
381 inline bool isEditableInset(Inset const * i)
383 return i && i->editable();
387 * returns true if pointer argument is valid
388 * and points to a highly editable inset
390 inline bool isHighlyEditableInset(Inset const * i)
392 return i && i->editable() == Inset::HIGHLY_EDITABLE;