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 "LayoutPtr.h"
21 #include "insets/InsetCode.h"
23 #include "support/docstring.h"
24 // FIXME: would be nice to forward declare odocstream instead of
26 #include "support/docstream.h"
46 class ParagraphParameters;
52 /// Invalid font span containing no character
53 FontSpan() : first(0), last(-1) {}
54 /// Span including first and last
55 FontSpan(pos_type f, pos_type l) : first(f), last(l) {}
58 /// Range including first and last.
63 /// A Paragraph holds all text, attributes and insets in a text paragraph
64 /// \todo FIXME: any reference to ParagraphMetrics (including inheritance)
65 /// should go in order to complete the Model/View separation of this class.
71 Paragraph(Paragraph const &);
73 Paragraph & operator=(Paragraph const &);
80 Language const * getParLanguage(BufferParams const &) const;
82 bool isRTL(BufferParams const &) const;
84 void changeLanguage(BufferParams const & bparams,
85 Language const * from, Language const * to);
87 bool isMultiLingual(BufferParams const &) const;
90 docstring const asString(Buffer const &, bool label) const;
92 docstring const asString(Buffer const & buffer,
98 void write(Buffer const &, std::ostream &, BufferParams const &,
99 depth_type & depth) const;
101 void validate(LaTeXFeatures &) const;
104 bool latex(Buffer const &, BufferParams const &,
105 Font const & outerfont, odocstream &,
106 TexRow & texrow, OutputParams const &) const;
108 /// Can we drop the standard paragraph wrapper?
109 bool emptyTag() const;
111 /// Get the id of the paragraph, usefull for docbook
112 std::string getID(Buffer const & buf,
113 OutputParams const & runparams) const;
115 /// Get the first word of a paragraph, return the position where it left
116 pos_type getFirstWord(Buffer const & buf,
118 OutputParams const & runparams) const;
120 /// Checks if the paragraph contains only text and no inset or font change.
121 bool onlyText(Buffer const & buf, Font const & outerfont,
122 pos_type initial) const;
124 /// Writes to stream the docbook representation
125 void simpleDocBookOnePar(Buffer const & buf,
127 OutputParams const & runparams,
128 Font const & outerfont,
129 pos_type initial = 0) const;
132 bool hasSameLayout(Paragraph const & par) const;
135 void makeSameLayout(Paragraph const & par);
138 void setInsetOwner(Inset * inset);
140 Inset * inInset() const;
142 InsetCode ownerCode() const;
144 bool forceDefaultParagraphs() const;
147 pos_type size() const;
152 LayoutPtr const & layout() const;
154 void layout(LayoutPtr const & new_layout);
156 /// This is the item depth, only used by enumerate and itemize
157 signed char itemdepth;
160 InsetBibitem * bibitem() const; // ale970302
162 /// look up change at given pos
163 Change const & lookupChange(pos_type pos) const;
165 /// is there a change within the given range ?
166 bool isChanged(pos_type start, pos_type end) const;
167 /// is there an unchanged char at the given pos ?
168 bool isUnchanged(pos_type pos) const;
169 /// is there an insertion at the given pos ?
170 bool isInserted(pos_type pos) const;
171 /// is there a deletion at the given pos ?
172 bool isDeleted(pos_type pos) const;
174 /// will the paragraph be physically merged with the next
175 /// one if the imaginary end-of-par character is logically deleted?
176 bool isMergedOnEndOfParDeletion(bool trackChanges) const;
178 /// set change for the entire par
179 void setChange(Change const & change);
181 /// set change at given pos
182 void setChange(pos_type pos, Change const & change);
184 /// accept changes within the given range
185 void acceptChanges(BufferParams const & bparams, pos_type start, pos_type end);
187 /// reject changes within the given range
188 void rejectChanges(BufferParams const & bparams, pos_type start, pos_type end);
190 /// Paragraphs can contain "manual labels", for example, Description
191 /// environment. The text for this user-editable label is stored in
192 /// the paragraph alongside the text of the rest of the paragraph
193 /// (the body). This function returns the starting position of the
194 /// body of the text in the paragraph.
195 pos_type beginOfBody() const;
196 /// recompute this value
197 void setBeginOfBody();
200 docstring const & getLabelstring() const;
202 /// the next two functions are for the manual labels
203 docstring const getLabelWidthString() const;
204 /// Set label width string.
205 void setLabelWidthString(docstring const & s);
206 /// translate \p label to the paragraph language if possible.
207 docstring const translateIfPossible(docstring const & label,
208 BufferParams const & bparams) const;
209 /// Expand the counters for the labelstring of \c layout
210 docstring expandLabel(LayoutPtr const &, BufferParams const &,
211 bool process_appendix = true) const;
212 /// Actual paragraph alignment used
213 char getAlign() const;
214 /// The nesting depth of a paragraph
215 depth_type getDepth() const;
216 /// The maximal possible depth of a paragraph after this one
217 depth_type getMaxDepthAfter() const;
219 void applyLayout(LayoutPtr const & new_layout);
221 /// (logically) erase the char at pos; return true if it was actually erased
222 bool eraseChar(pos_type pos, bool trackChanges);
223 /// (logically) erase the given range; return the number of chars actually erased
224 int eraseChars(pos_type start, pos_type end, bool trackChanges);
226 /** Get uninstantiated font setting. Returns the difference
227 between the characters font and the layoutfont.
228 This is what is stored in the fonttable
231 getFontSettings(BufferParams const &, pos_type pos) const;
233 Font const getFirstFontSettings(BufferParams const &) const;
235 /** Get fully instantiated font. If pos == -1, use the layout
236 font attached to this paragraph.
237 If pos == -2, use the label font of the layout attached here.
238 In all cases, the font is instantiated, i.e. does not have any
239 attributes with values Font::INHERIT, Font::IGNORE or
242 Font const getFont(BufferParams const &, pos_type pos,
243 Font const & outerfont) const;
244 Font const getLayoutFont(BufferParams const &,
245 Font const & outerfont) const;
246 Font const getLabelFont(BufferParams const &,
247 Font const & outerfont) const;
249 * The font returned by the above functions is the same in a
250 * span of characters. This method will return the first and
251 * the last positions in the paragraph for which that font is
252 * the same. This can be used to avoid unnecessary calls to getFont.
254 FontSpan fontSpan(pos_type pos) const;
256 char_type getChar(pos_type pos) const;
257 /// Get the char, but mirror all bracket characters if it is right-to-left
258 char_type getUChar(BufferParams const &, pos_type pos) const;
259 /// pos <= size() (there is a dummy font change at the end of each par)
260 void setFont(pos_type pos, Font const & font);
261 /// Returns the height of the highest font in range
262 Font_size highestFontInRange(pos_type startpos,
263 pos_type endpos, Font_size def_size) const;
265 void insert(pos_type pos, docstring const & str,
266 Font const & font, Change const & change);
269 void appendString(docstring const & s, Font const & font,
270 Change const & change);
272 void appendChar(char_type c, Font const & font, Change const & change);
274 void insertChar(pos_type pos, char_type c, bool trackChanges);
276 void insertChar(pos_type pos, char_type c,
277 Font const &, bool trackChanges);
279 void insertChar(pos_type pos, char_type c,
280 Font const &, Change const & change);
282 void insertInset(pos_type pos, Inset * inset,
283 Change const & change);
285 void insertInset(pos_type pos, Inset * inset,
286 Font const &, Change const & change);
288 bool insetAllowed(InsetCode code);
290 Inset * getInset(pos_type pos);
292 Inset const * getInset(pos_type pos) const;
294 /// Release inset at given position.
295 /// \warning does not honour change tracking!
296 /// Therefore, it should only be used for breaking and merging
298 Inset * releaseInset(pos_type pos);
301 InsetList const & insetList() const;
304 bool isHfill(pos_type pos) const;
306 /// hinted by profiler
307 bool isInset(pos_type pos) const;
309 bool isNewline(pos_type pos) const;
310 /// return true if the char is a word separator
311 bool isSeparator(pos_type pos) const;
313 bool isLineSeparator(pos_type pos) const;
314 /// True if the character/inset at this point can be part of a word.
315 /// Note that digits in particular are considered as letters
316 bool isLetter(pos_type pos) const;
318 /// returns true if at least one line break or line separator has been deleted
319 /// at the beginning of the paragraph (either physically or logically)
320 bool stripLeadingSpaces(bool trackChanges);
322 /// return true if we allow multiple spaces
323 bool isFreeSpacing() const;
325 /// return true if we allow this par to stay empty
326 bool allowEmpty() const;
328 char_type transformChar(char_type c, pos_type pos) const;
330 ParagraphParameters & params();
332 ParagraphParameters const & params() const;
334 /// Check if we are in a Biblio environment and insert or
335 /// delete InsetBibitems as necessary.
336 /// \retval int 1, if we had to add an inset, in which case
337 /// the cursor will need to move cursor forward; -pos, if we deleted
338 /// an inset, in which case pos is the position from which the inset
339 /// was deleted, and the cursor will need to be moved back one if it
340 /// was previously past that position. Return 0 otherwise.
341 int checkBiblio(bool track_changes);
343 /// For each author, set 'used' to true if there is a change
344 /// by this author in the paragraph.
345 void checkAuthors(AuthorList const & authorList);
347 /// return the number of InsetOptArg in a paragraph
348 int numberOfOptArgs() const;
354 friend class Paragraph::Private;
361 #endif // PARAGRAPH_H