4 * This file is part of LyX, the document processor.
5 * Licence details can be found in the file COPYING.
7 * \author Asger Alstrup
8 * \author Lars Gullik Bjønnes
10 * \author André Pönitz
11 * \author Jürgen Vigna
13 * Full author contact details are available in file CREDITS.
19 #include "FontEnums.h"
20 #include "SpellChecker.h"
22 #include "insets/InsetCode.h"
24 #include "support/strfwd.h"
25 #include "support/types.h"
53 class ParagraphParameters;
62 /// Invalid font span containing no character
63 FontSpan() : first(0), last(-1) {}
64 /// Span including first and last
65 FontSpan(pos_type f, pos_type l) : first(f), last(l) {}
68 /// Range including first and last.
71 inline bool operator<(FontSpan const & s) const
73 return first < s.first;
76 inline bool operator==(FontSpan const & s) const
78 return first == s.first && last == s.last;
81 inline bool inside(pos_type p) const
83 return first <= p && p <= last;
86 inline size_t size() const
88 return empty() ? 0 : last - first;
92 inline FontSpan intersect(FontSpan const & f) const
94 FontSpan result = FontSpan();
96 result.first = f.first;
97 else if (f.inside(first))
102 result.last = f.last;
103 else if (f.inside(last))
108 inline bool empty() const
119 text_capitalization = 1,
126 enum AsStringParameter
128 AS_STR_NONE = 0, ///< No option, only printable characters.
129 AS_STR_LABEL = 1, ///< Prefix with paragraph label.
130 AS_STR_INSETS = 2, ///< Go into insets.
131 AS_STR_NEWLINES = 4, ///< Get also newline characters.
132 AS_STR_SKIPDELETE = 8 ///< Skip deleted text in change tracking.
136 /// A Paragraph holds all text, attributes and insets in a text paragraph
142 /// Copy constructor.
143 Paragraph(Paragraph const &);
144 /// Partial copy constructor.
145 /// Copy the Paragraph contents from \p beg to \p end (without end).
146 Paragraph(Paragraph const & par, pos_type beg, pos_type end);
148 Paragraph & operator=(Paragraph const &);
157 void addChangesToToc(DocIterator const & cdit, Buffer const & buf) const;
159 Language const * getParLanguage(BufferParams const &) const;
161 bool isRTL(BufferParams const &) const;
163 void changeLanguage(BufferParams const & bparams,
164 Language const * from, Language const * to);
166 bool isMultiLingual(BufferParams const &) const;
168 void getLanguages(std::set<Language const *> &) const;
170 /// Convert the paragraph to a string.
171 /// \param AsStringParameter options. This can contain any combination of
172 /// asStringParameter values. Valid examples:
173 /// asString(AS_STR_LABEL)
174 /// asString(AS_STR_LABEL | AS_STR_INSETS)
175 /// asString(AS_STR_INSETS)
176 docstring asString(int options = AS_STR_NONE) const;
178 docstring asString(pos_type beg, pos_type end,
179 int options = AS_STR_NONE) const;
181 void forToc(docstring &, size_t maxlen) const;
183 /// Extract only the explicitly visible text (without any formatting),
184 /// descending into insets
185 docstring stringify(pos_type beg, pos_type end, int options, OutputParams & runparams) const;
188 void write(std::ostream &, BufferParams const &,
189 depth_type & depth) const;
191 void validate(LaTeXFeatures &) const;
193 /// \param force means: output even if layout.inpreamble is true.
194 void latex(BufferParams const &, Font const & outerfont, otexstream &,
195 OutputParams const &, int start_pos = 0, int end_pos = -1,
196 bool force = false) const;
198 /// Can we drop the standard paragraph wrapper?
199 bool emptyTag() const;
201 /// Get the id of the paragraph, usefull for docbook
202 std::string getID(Buffer const & buf, OutputParams const & runparams) const;
204 /// Output the first word of a paragraph, return the position where it left.
205 pos_type firstWordDocBook(odocstream & os, OutputParams const & runparams) const;
207 /// Output the first word of a paragraph, return the position where it left.
208 pos_type firstWordLyXHTML(XHTMLStream & xs, OutputParams const & runparams) const;
210 /// Writes to stream the docbook representation
211 void simpleDocBookOnePar(Buffer const & buf,
213 OutputParams const & runparams,
214 Font const & outerfont,
215 pos_type initial = 0) const;
216 /// \return any material that has had to be deferred until after the
217 /// paragraph has closed.
218 docstring simpleLyXHTMLOnePar(Buffer const & buf,
220 OutputParams const & runparams,
221 Font const & outerfont,
222 pos_type initial = 0) const;
225 bool hasSameLayout(Paragraph const & par) const;
228 void makeSameLayout(Paragraph const & par);
231 void setInsetOwner(Inset const * inset);
233 Inset const & inInset() const;
235 bool allowParagraphCustomization() const;
237 bool usePlainLayout() const;
239 bool isPassThru() const;
241 pos_type size() const;
246 Layout const & layout() const;
247 /// Do not pass a temporary to this!
248 void setLayout(Layout const & layout);
250 void setPlainOrDefaultLayout(DocumentClass const & tc);
252 void setDefaultLayout(DocumentClass const & tc);
254 void setPlainLayout(DocumentClass const & tc);
256 /// This is the item depth, only used by enumerate and itemize
257 signed char itemdepth;
259 /// look up change at given pos
260 Change const & lookupChange(pos_type pos) const;
262 /// is there a change within the given range ?
263 bool isChanged(pos_type start, pos_type end) const;
264 /// is there an unchanged char at the given pos ?
265 bool isChanged(pos_type pos) const;
266 /// is there an insertion at the given pos ?
267 bool isInserted(pos_type pos) const;
268 /// is there a deletion at the given pos ?
269 bool isDeleted(pos_type pos) const;
270 /// is the whole paragraph deleted ?
271 bool isDeleted(pos_type start, pos_type end) const;
273 /// will the paragraph be physically merged with the next
274 /// one if the imaginary end-of-par character is logically deleted?
275 bool isMergedOnEndOfParDeletion(bool trackChanges) const;
277 /// set change for the entire par
278 void setChange(Change const & change);
280 /// set change at given pos
281 void setChange(pos_type pos, Change const & change);
283 /// accept changes within the given range
284 void acceptChanges(pos_type start, pos_type end);
286 /// reject changes within the given range
287 void rejectChanges(pos_type start, pos_type end);
289 /// Paragraphs can contain "manual labels", for example, Description
290 /// environment. The text for this user-editable label is stored in
291 /// the paragraph alongside the text of the rest of the paragraph
292 /// (the body). This function returns the starting position of the
293 /// body of the text in the paragraph.
294 pos_type beginOfBody() const;
295 /// recompute this value
296 void setBeginOfBody();
299 docstring expandLabel(Layout const &, BufferParams const &) const;
301 docstring expandDocBookLabel(Layout const &, BufferParams const &) const;
303 docstring const & labelString() const;
304 /// the next two functions are for the manual labels
305 docstring const getLabelWidthString() const;
306 /// Set label width string.
307 void setLabelWidthString(docstring const & s);
308 /// Actual paragraph alignment used
309 char getAlign() const;
310 /// The nesting depth of a paragraph
311 depth_type getDepth() const;
312 /// The maximal possible depth of a paragraph after this one
313 depth_type getMaxDepthAfter() const;
315 void applyLayout(Layout const & new_layout);
317 /// (logically) erase the char at pos; return true if it was actually erased
318 bool eraseChar(pos_type pos, bool trackChanges);
319 /// (logically) erase the given range; return the number of chars actually erased
320 int eraseChars(pos_type start, pos_type end, bool trackChanges);
323 void resetFonts(Font const & font);
325 /** Get uninstantiated font setting. Returns the difference
326 between the characters font and the layoutfont.
327 This is what is stored in the fonttable
330 getFontSettings(BufferParams const &, pos_type pos) const;
332 Font const & getFirstFontSettings(BufferParams const &) const;
334 /** Get fully instantiated font. If pos == -1, use the layout
335 font attached to this paragraph.
336 If pos == -2, use the label font of the layout attached here.
337 In all cases, the font is instantiated, i.e. does not have any
338 attributes with values FONT_INHERIT, FONT_IGNORE or
341 Font const getFont(BufferParams const &, pos_type pos,
342 Font const & outerfont) const;
343 Font const getLayoutFont(BufferParams const &,
344 Font const & outerfont) const;
345 Font const getLabelFont(BufferParams const &,
346 Font const & outerfont) const;
348 * The font returned by the above functions is the same in a
349 * span of characters. This method will return the first and
350 * the last positions in the paragraph for which that font is
351 * the same. This can be used to avoid unnecessary calls to getFont.
353 FontSpan fontSpan(pos_type pos) const;
355 char_type getChar(pos_type pos) const;
356 /// Get the char, but mirror all bracket characters if it is right-to-left
357 char_type getUChar(BufferParams const &, pos_type pos) const;
358 /// pos <= size() (there is a dummy font change at the end of each par)
359 void setFont(pos_type pos, Font const & font);
360 /// Returns the height of the highest font in range
361 FontSize highestFontInRange(pos_type startpos,
362 pos_type endpos, FontSize def_size) const;
364 void insert(pos_type pos, docstring const & str,
365 Font const & font, Change const & change);
368 void appendString(docstring const & s, Font const & font,
369 Change const & change);
371 void appendChar(char_type c, Font const & font, Change const & change);
373 void insertChar(pos_type pos, char_type c, bool trackChanges);
375 void insertChar(pos_type pos, char_type c,
376 Font const &, bool trackChanges);
378 void insertChar(pos_type pos, char_type c,
379 Font const &, Change const & change);
380 /// Insert \p inset at position \p pos with \p change traking status.
381 /// \return true if successful.
382 bool insertInset(pos_type pos, Inset * inset,
383 Change const & change);
384 /// Insert \p inset at position \p pos with \p change traking status and
386 /// \return true if successful.
387 bool insertInset(pos_type pos, Inset * inset,
388 Font const & font, Change const & change);
390 Inset * getInset(pos_type pos);
392 Inset const * getInset(pos_type pos) const;
394 /// Release inset at given position.
395 /// \warning does not honour change tracking!
396 /// Therefore, it should only be used for breaking and merging
398 Inset * releaseInset(pos_type pos);
401 InsetList const & insetList() const;
403 void setBuffer(Buffer &);
406 bool isHfill(pos_type pos) const;
408 /// hinted by profiler
409 bool isInset(pos_type pos) const;
411 bool isNewline(pos_type pos) const;
412 /// return true if the char is a word separator
413 bool isSeparator(pos_type pos) const;
415 bool isLineSeparator(pos_type pos) const;
416 /// True if the character/inset at this point is a word separator.
417 /// Note that digits in particular are not considered as word separator.
418 bool isWordSeparator(pos_type pos) const;
419 /// True if the element at this point is a character that is not a letter.
420 bool isChar(pos_type pos) const;
421 /// True if the element at this point is a space
422 bool isSpace(pos_type pos) const;
423 /// True if the element at this point is a hard hyphen or a apostrophe
424 /// If it is enclosed by spaces return false
425 bool isHardHyphenOrApostrophe(pos_type pos) const;
427 /// returns true if at least one line break or line separator has been deleted
428 /// at the beginning of the paragraph (either physically or logically)
429 bool stripLeadingSpaces(bool trackChanges);
431 /// return true if we allow multiple spaces
432 bool isFreeSpacing() const;
434 /// return true if we allow this par to stay empty
435 bool allowEmpty() const;
437 char_type transformChar(char_type c, pos_type pos) const;
439 ParagraphParameters & params();
441 ParagraphParameters const & params() const;
443 /// Check whether a call to fixBiblio is needed.
444 bool brokenBiblio() const;
445 /// Check if we are in a Biblio environment and insert or
446 /// delete InsetBibitems as necessary.
447 /// \retval int 1, if we had to add an inset, in which case
448 /// the cursor will need to move cursor forward; -pos, if we deleted
449 /// an inset, in which case pos is the position from which the inset
450 /// was deleted, and the cursor will need to be moved back one if it
451 /// was previously past that position. Return 0 otherwise.
452 int fixBiblio(Buffer const & buffer);
454 /// For each author, set 'used' to true if there is a change
455 /// by this author in the paragraph.
456 void checkAuthors(AuthorList const & authorList);
459 void changeCase(BufferParams const & bparams, pos_type pos,
460 pos_type & right, TextCase action);
462 /// find \param str string inside Paragraph.
463 /// \return non-zero if the specified string is at the specified
464 /// position; returned value is the actual match length in positions
465 /// \param del specifies whether deleted strings in ct mode will be considered
467 docstring const & str, ///< string to search
470 pos_type pos, ///< start from here.
471 bool del = true) const;
473 void locateWord(pos_type & from, pos_type & to,
474 word_location const loc) const;
478 /// Spellcheck word at position \p from and fill in found misspelled word
479 /// and \p suggestions if \p do_suggestion is true.
480 /// \return result from spell checker, SpellChecker::UNKNOWN_WORD when misspelled.
481 SpellChecker::Result spellCheck(pos_type & from, pos_type & to, WordLangTuple & wl,
482 docstring_list & suggestions, bool do_suggestion = true,
483 bool check_learned = false) const;
485 /// Spell checker status at position \p pos.
486 /// If \p check_boundary is true the status of position immediately
487 /// before \p pos is tested too if it is at word boundary.
488 /// \return true if one of the tested positions is misspelled.
489 bool isMisspelled(pos_type pos, bool check_boundary = false) const;
491 /// \return true if both positions are inside the same
492 /// spell range - i.e. the same word.
493 /// use it for positions inside misspelled range only.
494 bool isSameSpellRange(pos_type pos1, pos_type pos2) const;
496 /// spell check of whole paragraph
497 /// remember results until call of requestSpellCheck()
498 void spellCheck() const;
500 /// query state of spell checker results
501 bool needsSpellCheck() const;
502 /// mark position of text manipulation to inform the spell checker
503 /// default value -1 marks the whole paragraph to be checked (again)
504 void requestSpellCheck(pos_type pos = -1);
506 /// an automatically generated identifying label for this paragraph.
507 /// presently used only in the XHTML output routines.
508 std::string magicLabel() const;
511 /// Expand the counters for the labelstring of \c layout
512 docstring expandParagraphLabel(Layout const &, BufferParams const &,
513 bool process_appendix) const;
515 void deregisterWords();
519 void registerWords();
524 friend class Paragraph::Private;
531 #endif // PARAGRAPH_H