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,
158 bool output_active) const;
160 Language const * getParLanguage(BufferParams const &) const;
162 bool isRTL(BufferParams const &) const;
164 void changeLanguage(BufferParams const & bparams,
165 Language const * from, Language const * to);
167 bool isMultiLingual(BufferParams const &) const;
169 void getLanguages(std::set<Language const *> &) const;
171 /// Convert the paragraph to a string.
172 /// \param AsStringParameter options. This can contain any combination of
173 /// asStringParameter values. Valid examples:
174 /// asString(AS_STR_LABEL)
175 /// asString(AS_STR_LABEL | AS_STR_INSETS)
176 /// asString(AS_STR_INSETS)
177 docstring asString(int options = AS_STR_NONE) const;
179 docstring asString(pos_type beg, pos_type end,
180 int options = AS_STR_NONE) const;
182 void forToc(docstring &, size_t maxlen) const;
184 /// Extract only the explicitly visible text (without any formatting),
185 /// descending into insets
186 docstring stringify(pos_type beg, pos_type end, int options, OutputParams & runparams) const;
189 void write(std::ostream &, BufferParams const &,
190 depth_type & depth) const;
192 void validate(LaTeXFeatures &) const;
194 /// \param force means: output even if layout.inpreamble is true.
195 void latex(BufferParams const &, Font const & outerfont, otexstream &,
196 OutputParams const &, int start_pos = 0, int end_pos = -1,
197 bool force = false) const;
199 /// Can we drop the standard paragraph wrapper?
200 bool emptyTag() const;
202 /// Get the id of the paragraph, usefull for docbook
203 std::string getID(Buffer const & buf, OutputParams const & runparams) const;
205 /// Output the first word of a paragraph, return the position where it left.
206 pos_type firstWordDocBook(odocstream & os, OutputParams const & runparams) const;
208 /// Output the first word of a paragraph, return the position where it left.
209 pos_type firstWordLyXHTML(XHTMLStream & xs, OutputParams const & runparams) const;
211 /// Writes to stream the docbook representation
212 void simpleDocBookOnePar(Buffer const & buf,
214 OutputParams const & runparams,
215 Font const & outerfont,
216 pos_type initial = 0) const;
217 /// \return any material that has had to be deferred until after the
218 /// paragraph has closed.
219 docstring simpleLyXHTMLOnePar(Buffer const & buf,
221 OutputParams const & runparams,
222 Font const & outerfont,
223 pos_type initial = 0) const;
226 bool hasSameLayout(Paragraph const & par) const;
229 void makeSameLayout(Paragraph const & par);
232 void setInsetOwner(Inset const * inset);
234 Inset const & inInset() const;
236 bool allowParagraphCustomization() const;
238 bool usePlainLayout() const;
240 bool isPassThru() const;
242 pos_type size() const;
247 Layout const & layout() const;
248 /// Do not pass a temporary to this!
249 void setLayout(Layout const & layout);
251 void setPlainOrDefaultLayout(DocumentClass const & tc);
253 void setDefaultLayout(DocumentClass const & tc);
255 void setPlainLayout(DocumentClass const & tc);
257 /// This is the item depth, only used by enumerate and itemize
258 signed char itemdepth;
260 /// look up change at given pos
261 Change const & lookupChange(pos_type pos) const;
263 /// is there a change within the given range ?
264 bool isChanged(pos_type start, pos_type end) const;
265 /// is there an unchanged char at the given pos ?
266 bool isChanged(pos_type pos) const;
267 /// is there an insertion at the given pos ?
268 bool isInserted(pos_type pos) const;
269 /// is there a deletion at the given pos ?
270 bool isDeleted(pos_type pos) const;
271 /// is the whole paragraph deleted ?
272 bool isDeleted(pos_type start, pos_type end) const;
274 /// will the paragraph be physically merged with the next
275 /// one if the imaginary end-of-par character is logically deleted?
276 bool isMergedOnEndOfParDeletion(bool trackChanges) const;
278 /// set change for the entire par
279 void setChange(Change const & change);
281 /// set change at given pos
282 void setChange(pos_type pos, Change const & change);
284 /// accept changes within the given range
285 void acceptChanges(pos_type start, pos_type end);
287 /// reject changes within the given range
288 void rejectChanges(pos_type start, pos_type end);
290 /// Paragraphs can contain "manual labels", for example, Description
291 /// environment. The text for this user-editable label is stored in
292 /// the paragraph alongside the text of the rest of the paragraph
293 /// (the body). This function returns the starting position of the
294 /// body of the text in the paragraph.
295 pos_type beginOfBody() const;
296 /// recompute this value
297 void setBeginOfBody();
300 docstring expandLabel(Layout const &, BufferParams const &) const;
302 docstring expandDocBookLabel(Layout const &, BufferParams const &) const;
304 docstring const & labelString() const;
305 /// the next two functions are for the manual labels
306 docstring const getLabelWidthString() const;
307 /// Set label width string.
308 void setLabelWidthString(docstring const & s);
309 /// Actual paragraph alignment used
310 char getAlign() const;
311 /// The nesting depth of a paragraph
312 depth_type getDepth() const;
313 /// The maximal possible depth of a paragraph after this one
314 depth_type getMaxDepthAfter() const;
316 void applyLayout(Layout const & new_layout);
318 /// (logically) erase the char at pos; return true if it was actually erased
319 bool eraseChar(pos_type pos, bool trackChanges);
320 /// (logically) erase the given range; return the number of chars actually erased
321 int eraseChars(pos_type start, pos_type end, bool trackChanges);
324 void resetFonts(Font const & font);
326 /** Get uninstantiated font setting. Returns the difference
327 between the characters font and the layoutfont.
328 This is what is stored in the fonttable
331 getFontSettings(BufferParams const &, pos_type pos) const;
333 Font const & getFirstFontSettings(BufferParams const &) const;
335 /** Get fully instantiated font. If pos == -1, use the layout
336 font attached to this paragraph.
337 If pos == -2, use the label font of the layout attached here.
338 In all cases, the font is instantiated, i.e. does not have any
339 attributes with values FONT_INHERIT, FONT_IGNORE or
342 Font const getFont(BufferParams const &, pos_type pos,
343 Font const & outerfont) const;
344 Font const getLayoutFont(BufferParams const &,
345 Font const & outerfont) const;
346 Font const getLabelFont(BufferParams const &,
347 Font const & outerfont) const;
349 * The font returned by the above functions is the same in a
350 * span of characters. This method will return the first and
351 * the last positions in the paragraph for which that font is
352 * the same. This can be used to avoid unnecessary calls to getFont.
354 FontSpan fontSpan(pos_type pos) const;
356 char_type getChar(pos_type pos) const;
357 /// Get the char, but mirror all bracket characters if it is right-to-left
358 char_type getUChar(BufferParams const &, pos_type pos) const;
359 /// pos <= size() (there is a dummy font change at the end of each par)
360 void setFont(pos_type pos, Font const & font);
361 /// Returns the height of the highest font in range
362 FontSize highestFontInRange(pos_type startpos,
363 pos_type endpos, FontSize def_size) const;
365 void insert(pos_type pos, docstring const & str,
366 Font const & font, Change const & change);
369 void appendString(docstring const & s, Font const & font,
370 Change const & change);
372 void appendChar(char_type c, Font const & font, Change const & change);
374 void insertChar(pos_type pos, char_type c, bool trackChanges);
376 void insertChar(pos_type pos, char_type c,
377 Font const &, bool trackChanges);
379 void insertChar(pos_type pos, char_type c,
380 Font const &, Change const & change);
381 /// Insert \p inset at position \p pos with \p change traking status.
382 /// \return true if successful.
383 bool insertInset(pos_type pos, Inset * inset,
384 Change const & change);
385 /// Insert \p inset at position \p pos with \p change traking status and
387 /// \return true if successful.
388 bool insertInset(pos_type pos, Inset * inset,
389 Font const & font, Change const & change);
391 Inset * getInset(pos_type pos);
393 Inset const * getInset(pos_type pos) const;
395 /// Release inset at given position.
396 /// \warning does not honour change tracking!
397 /// Therefore, it should only be used for breaking and merging
399 Inset * releaseInset(pos_type pos);
402 InsetList const & insetList() const;
404 void setBuffer(Buffer &);
407 bool isHfill(pos_type pos) const;
409 /// hinted by profiler
410 bool isInset(pos_type pos) const;
412 bool isNewline(pos_type pos) const;
413 /// return true if the char is a word separator
414 bool isSeparator(pos_type pos) const;
416 bool isLineSeparator(pos_type pos) const;
417 /// True if the character/inset at this point is a word separator.
418 /// Note that digits in particular are not considered as word separator.
419 bool isWordSeparator(pos_type pos) const;
420 /// True if the element at this point is a character that is not a letter.
421 bool isChar(pos_type pos) const;
422 /// True if the element at this point is a space
423 bool isSpace(pos_type pos) const;
424 /// True if the element at this point is a hard hyphen or a apostrophe
425 /// If it is enclosed by spaces return false
426 bool isHardHyphenOrApostrophe(pos_type pos) const;
428 /// returns true if at least one line break or line separator has been deleted
429 /// at the beginning of the paragraph (either physically or logically)
430 bool stripLeadingSpaces(bool trackChanges);
432 /// return true if we allow multiple spaces
433 bool isFreeSpacing() const;
435 /// return true if we allow this par to stay empty
436 bool allowEmpty() const;
438 char_type transformChar(char_type c, pos_type pos) const;
440 ParagraphParameters & params();
442 ParagraphParameters const & params() const;
444 /// Check whether a call to fixBiblio is needed.
445 bool brokenBiblio() const;
446 /// Check if we are in a Biblio environment and insert or
447 /// delete InsetBibitems as necessary.
448 /// \retval int 1, if we had to add an inset, in which case
449 /// the cursor will need to move cursor forward; -pos, if we deleted
450 /// an inset, in which case pos is the position from which the inset
451 /// was deleted, and the cursor will need to be moved back one if it
452 /// was previously past that position. Return 0 otherwise.
453 int fixBiblio(Buffer const & buffer);
455 /// For each author, set 'used' to true if there is a change
456 /// by this author in the paragraph.
457 void checkAuthors(AuthorList const & authorList);
460 void changeCase(BufferParams const & bparams, pos_type pos,
461 pos_type & right, TextCase action);
463 /// find \param str string inside Paragraph.
464 /// \return non-zero if the specified string is at the specified
465 /// position; returned value is the actual match length in positions
466 /// \param del specifies whether deleted strings in ct mode will be considered
468 docstring const & str, ///< string to search
471 pos_type pos, ///< start from here.
472 bool del = true) const;
474 void locateWord(pos_type & from, pos_type & to,
475 word_location const loc) const;
479 /// Spellcheck word at position \p from and fill in found misspelled word
480 /// and \p suggestions if \p do_suggestion is true.
481 /// \return result from spell checker, SpellChecker::UNKNOWN_WORD when misspelled.
482 SpellChecker::Result spellCheck(pos_type & from, pos_type & to, WordLangTuple & wl,
483 docstring_list & suggestions, bool do_suggestion = true,
484 bool check_learned = false) const;
486 /// Spell checker status at position \p pos.
487 /// If \p check_boundary is true the status of position immediately
488 /// before \p pos is tested too if it is at word boundary.
489 /// \return true if one of the tested positions is misspelled.
490 bool isMisspelled(pos_type pos, bool check_boundary = false) const;
492 /// \return true if both positions are inside the same
493 /// spell range - i.e. the same word.
494 /// use it for positions inside misspelled range only.
495 bool isSameSpellRange(pos_type pos1, pos_type pos2) const;
497 /// spell check of whole paragraph
498 /// remember results until call of requestSpellCheck()
499 void spellCheck() const;
501 /// query state of spell checker results
502 bool needsSpellCheck() const;
503 /// mark position of text manipulation to inform the spell checker
504 /// default value -1 marks the whole paragraph to be checked (again)
505 void requestSpellCheck(pos_type pos = -1);
507 /// an automatically generated identifying label for this paragraph.
508 /// presently used only in the XHTML output routines.
509 std::string magicLabel() const;
512 /// Expand the counters for the labelstring of \c layout
513 docstring expandParagraphLabel(Layout const &, BufferParams const &,
514 bool process_appendix) const;
516 void deregisterWords();
520 void registerWords();
525 friend class Paragraph::Private;
532 #endif // PARAGRAPH_H