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"
22 #include "insets/InsetCode.h"
24 #include "support/strfwd.h"
25 #include "support/types.h"
49 class ParagraphParameters;
55 /// Invalid font span containing no character
56 FontSpan() : first(0), last(-1) {}
57 /// Span including first and last
58 FontSpan(pos_type f, pos_type l) : first(f), last(l) {}
61 /// Range including first and last.
70 text_capitalization = 1,
77 enum AsStringParameter
79 AS_STR_NONE = 0, ///< No option, only printable characters.
80 AS_STR_LABEL = 1, ///< Prefix with paragraph label.
81 AS_STR_INSETS = 2, ///< Go into insets.
82 AS_STR_NEWLINES = 4 ///< Get also newline characters.
86 /// A Paragraph holds all text, attributes and insets in a text paragraph
93 Paragraph(Paragraph const &);
94 /// Partial copy constructor.
95 /// Copy the Paragraph contents from \p beg to \p end (without end).
96 Paragraph(Paragraph const & par, pos_type beg, pos_type end);
98 Paragraph & operator=(Paragraph const &);
105 void addChangesToToc(DocIterator const & cdit, Buffer const & buf) const;
107 Language const * getParLanguage(BufferParams const &) const;
109 bool isRTL(BufferParams const &) const;
111 void changeLanguage(BufferParams const & bparams,
112 Language const * from, Language const * to);
114 bool isMultiLingual(BufferParams const &) const;
116 /// Convert the paragraph to a string.
117 /// \param AsStringParameter options. This can contain any combination of
118 /// asStringParameter values. Valid examples:
119 /// asString(AS_STR_LABEL)
120 /// asString(AS_STR_LABEL | AS_STR_INSETS)
121 /// asString(AS_STR_INSETS)
122 docstring asString(int options = AS_STR_NONE) const;
124 docstring asString(pos_type beg, pos_type end,
125 int options = AS_STR_NONE) const;
127 /// Extract only the explicitly visible text (without any formatting),
128 /// descending into insets
129 docstring stringify(pos_type beg, pos_type end, int options, OutputParams & runparams) const;
132 void write(std::ostream &, BufferParams const &,
133 depth_type & depth) const;
135 void validate(LaTeXFeatures &) const;
138 bool latex(BufferParams const &, Font const & outerfont, odocstream &,
139 TexRow & texrow, OutputParams const &,
140 int start_pos = 0, int end_pos = -1) const;
142 /// Can we drop the standard paragraph wrapper?
143 bool emptyTag() const;
145 /// Get the id of the paragraph, usefull for docbook
146 std::string getID(Buffer const & buf, OutputParams const & runparams) const;
148 /// Output the first word of a paragraph, return the position where it left.
149 pos_type firstWordDocBook(odocstream & os, OutputParams const & runparams) const;
151 /// Output the first word of a paragraph, return the position where it left.
152 pos_type firstWordLyXHTML(odocstream & os, OutputParams const & runparams) const;
154 /// Writes to stream the docbook representation
155 void simpleDocBookOnePar(Buffer const & buf,
157 OutputParams const & runparams,
158 Font const & outerfont,
159 pos_type initial = 0) const;
161 void simpleLyXHTMLOnePar(Buffer const & buf,
163 OutputParams const & runparams,
164 Font const & outerfont,
165 pos_type initial = 0) const;
168 bool hasSameLayout(Paragraph const & par) const;
171 void makeSameLayout(Paragraph const & par);
174 void setInsetOwner(Inset const * inset);
176 Inset const & inInset() const;
178 InsetCode ownerCode() const;
180 bool forcePlainLayout() const;
182 bool allowParagraphCustomization() const;
184 bool usePlainLayout() const;
186 pos_type size() const;
191 Layout const & layout() const;
192 /// Do not pass a temporary to this!
193 void setLayout(Layout const & layout);
195 void setPlainOrDefaultLayout(DocumentClass const & tc);
197 void setDefaultLayout(DocumentClass const & tc);
199 void setPlainLayout(DocumentClass const & tc);
201 /// This is the item depth, only used by enumerate and itemize
202 signed char itemdepth;
204 /// look up change at given pos
205 Change const & lookupChange(pos_type pos) const;
207 /// is there a change within the given range ?
208 bool isChanged(pos_type start, pos_type end) const;
209 /// is there an unchanged char at the given pos ?
210 bool isUnchanged(pos_type pos) const;
211 /// is there an insertion at the given pos ?
212 bool isInserted(pos_type pos) const;
213 /// is there a deletion at the given pos ?
214 bool isDeleted(pos_type pos) const;
215 /// is the whole paragraph deleted ?
216 bool isFullyDeleted(pos_type start, pos_type end) const;
218 /// will the paragraph be physically merged with the next
219 /// one if the imaginary end-of-par character is logically deleted?
220 bool isMergedOnEndOfParDeletion(bool trackChanges) const;
222 /// set change for the entire par
223 void setChange(Change const & change);
225 /// set change at given pos
226 void setChange(pos_type pos, Change const & change);
228 /// accept changes within the given range
229 void acceptChanges(BufferParams const & bparams, pos_type start, pos_type end);
231 /// reject changes within the given range
232 void rejectChanges(BufferParams const & bparams, pos_type start, pos_type end);
234 /// Paragraphs can contain "manual labels", for example, Description
235 /// environment. The text for this user-editable label is stored in
236 /// the paragraph alongside the text of the rest of the paragraph
237 /// (the body). This function returns the starting position of the
238 /// body of the text in the paragraph.
239 pos_type beginOfBody() const;
240 /// recompute this value
241 void setBeginOfBody();
244 docstring const & labelString() const;
246 /// the next two functions are for the manual labels
247 docstring const getLabelWidthString() const;
248 /// Set label width string.
249 void setLabelWidthString(docstring const & s);
250 /// translate \p label to the paragraph language if possible.
251 docstring const translateIfPossible(docstring const & label,
252 BufferParams const & bparams) const;
253 /// Expand the counters for the labelstring of \c layout
254 docstring expandLabel(Layout const &, BufferParams const &,
255 bool process_appendix = true) const;
256 /// Actual paragraph alignment used
257 char getAlign() const;
258 /// The nesting depth of a paragraph
259 depth_type getDepth() const;
260 /// The maximal possible depth of a paragraph after this one
261 depth_type getMaxDepthAfter() const;
263 void applyLayout(Layout const & new_layout);
265 /// (logically) erase the char at pos; return true if it was actually erased
266 bool eraseChar(pos_type pos, bool trackChanges);
267 /// (logically) erase the given range; return the number of chars actually erased
268 int eraseChars(pos_type start, pos_type end, bool trackChanges);
271 void resetFonts(Font const & font);
273 /** Get uninstantiated font setting. Returns the difference
274 between the characters font and the layoutfont.
275 This is what is stored in the fonttable
278 getFontSettings(BufferParams const &, pos_type pos) const;
280 Font const & getFirstFontSettings(BufferParams const &) const;
282 /** Get fully instantiated font. If pos == -1, use the layout
283 font attached to this paragraph.
284 If pos == -2, use the label font of the layout attached here.
285 In all cases, the font is instantiated, i.e. does not have any
286 attributes with values FONT_INHERIT, FONT_IGNORE or
289 Font const getFont(BufferParams const &, pos_type pos,
290 Font const & outerfont) const;
291 Font const getLayoutFont(BufferParams const &,
292 Font const & outerfont) const;
293 Font const getLabelFont(BufferParams const &,
294 Font const & outerfont) const;
296 * The font returned by the above functions is the same in a
297 * span of characters. This method will return the first and
298 * the last positions in the paragraph for which that font is
299 * the same. This can be used to avoid unnecessary calls to getFont.
301 FontSpan fontSpan(pos_type pos) const;
303 char_type getChar(pos_type pos) const;
304 /// Get the char, but mirror all bracket characters if it is right-to-left
305 char_type getUChar(BufferParams const &, pos_type pos) const;
306 /// pos <= size() (there is a dummy font change at the end of each par)
307 void setFont(pos_type pos, Font const & font);
308 /// Returns the height of the highest font in range
309 FontSize highestFontInRange(pos_type startpos,
310 pos_type endpos, FontSize def_size) const;
312 void insert(pos_type pos, docstring const & str,
313 Font const & font, Change const & change);
316 void appendString(docstring const & s, Font const & font,
317 Change const & change);
319 void appendChar(char_type c, Font const & font, Change const & change);
321 void insertChar(pos_type pos, char_type c, bool trackChanges);
323 void insertChar(pos_type pos, char_type c,
324 Font const &, bool trackChanges);
326 void insertChar(pos_type pos, char_type c,
327 Font const &, Change const & change);
328 /// Insert \p inset at position \p pos with \p change traking status.
329 /// \return true if successful.
330 bool insertInset(pos_type pos, Inset * inset,
331 Change const & change);
332 /// Insert \p inset at position \p pos with \p change traking status and
334 /// \return true if successful.
335 bool insertInset(pos_type pos, Inset * inset,
336 Font const & font, Change const & change);
338 Inset * getInset(pos_type pos);
340 Inset const * getInset(pos_type pos) const;
342 /// Release inset at given position.
343 /// \warning does not honour change tracking!
344 /// Therefore, it should only be used for breaking and merging
346 Inset * releaseInset(pos_type pos);
349 InsetList const & insetList() const;
351 void setBuffer(Buffer &);
354 bool isHfill(pos_type pos) const;
356 /// hinted by profiler
357 bool isInset(pos_type pos) const;
359 bool isNewline(pos_type pos) const;
360 /// return true if the char is a word separator
361 bool isSeparator(pos_type pos) const;
363 bool isLineSeparator(pos_type pos) const;
364 /// True if the character/inset at this point can be part of a word.
365 /// Note that digits in particular are considered as letters
366 bool isLetter(pos_type pos) const;
367 /// True if the element at this point is a character that is not a letter.
368 bool isChar(pos_type pos) const;
369 /// True if the element at this point is a space
370 bool isSpace(pos_type pos) const;
372 /// returns true if at least one line break or line separator has been deleted
373 /// at the beginning of the paragraph (either physically or logically)
374 bool stripLeadingSpaces(bool trackChanges);
376 /// return true if we allow multiple spaces
377 bool isFreeSpacing() const;
379 /// return true if we allow this par to stay empty
380 bool allowEmpty() const;
382 char_type transformChar(char_type c, pos_type pos) const;
384 ParagraphParameters & params();
386 ParagraphParameters const & params() const;
388 /// Check if we are in a Biblio environment and insert or
389 /// delete InsetBibitems as necessary.
390 /// \retval int 1, if we had to add an inset, in which case
391 /// the cursor will need to move cursor forward; -pos, if we deleted
392 /// an inset, in which case pos is the position from which the inset
393 /// was deleted, and the cursor will need to be moved back one if it
394 /// was previously past that position. Return 0 otherwise.
395 int checkBiblio(Buffer const & buffer);
397 /// For each author, set 'used' to true if there is a change
398 /// by this author in the paragraph.
399 void checkAuthors(AuthorList const & authorList);
402 void changeCase(BufferParams const & bparams, pos_type pos,
403 pos_type & right, TextCase action);
405 /// find \param str string inside Paragraph.
406 /// \return true if the specified string is at the specified position
407 /// \param del specifies whether deleted strings in ct mode will be considered
409 docstring const & str, ///< string to search
412 pos_type pos, ///< start from here.
413 bool del = true) const;
415 void locateWord(pos_type & from, pos_type & to,
416 word_location const loc) const;
419 /// Spellcheck word at position \p pos.
420 /// \return true if pointed word is misspelled.
421 bool isMisspelled(pos_type pos) const;
425 void deregisterWords();
429 void registerWords();
434 friend class Paragraph::Private;
441 #endif // PARAGRAPH_H