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000832f9d9
This avoids some duplicate code. Note that the return value of Paragraph::getAlign had to be changed. I suspect it was set to char to avoid reading one header file in Paragraph.h.
530 lines
16 KiB
C++
530 lines
16 KiB
C++
// -*- C++ -*-
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/**
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* \file Paragraph.h
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* This file is part of LyX, the document processor.
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* Licence details can be found in the file COPYING.
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*
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* \author Asger Alstrup
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* \author Lars Gullik Bjønnes
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* \author John Levon
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* \author André Pönitz
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* \author Jürgen Vigna
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*
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* Full author contact details are available in file CREDITS.
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*/
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#ifndef PARAGRAPH_H
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#define PARAGRAPH_H
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#include "FontEnums.h"
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#include "LayoutEnums.h"
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#include "SpellChecker.h"
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#include "support/strfwd.h"
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#include "support/types.h"
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#include <set>
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namespace lyx {
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class AuthorList;
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class Buffer;
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class BufferParams;
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class Change;
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class Counters;
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class Cursor;
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class CursorSlice;
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class DocIterator;
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class docstring_list;
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class DocumentClass;
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class Inset;
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class InsetBibitem;
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class LaTeXFeatures;
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class InsetList;
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class Language;
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class Layout;
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class Font;
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class MetricsInfo;
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class OutputParams;
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class PainterInfo;
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class ParagraphParameters;
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class TocBackend;
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class WordLangTuple;
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class XHTMLStream;
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class otexstream;
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class FontSpan {
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public:
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/// Invalid font span containing no character
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FontSpan() : first(0), last(-1) {}
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/// Span including first and last
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FontSpan(pos_type f, pos_type l) : first(f), last(l) {}
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public:
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/// Range including first and last.
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pos_type first, last;
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inline bool operator<(FontSpan const & s) const
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{
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return first < s.first;
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}
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inline bool operator==(FontSpan const & s) const
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{
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return first == s.first && last == s.last;
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}
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inline bool contains(pos_type p) const
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{
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return first <= p && p <= last;
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}
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inline size_t size() const
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{
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return empty() ? 0 : last - first;
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}
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inline FontSpan intersect(FontSpan const & f) const
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{
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FontSpan result = FontSpan();
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if (contains(f.first))
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result.first = f.first;
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else if (f.contains(first))
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result.first = first;
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else
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return result;
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if (contains(f.last))
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result.last = f.last;
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else if (f.contains(last))
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result.last = last;
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return result;
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}
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inline bool empty() const
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{
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return first > last;
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}
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};
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///
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enum TextCase {
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///
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text_lowercase = 0,
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///
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text_capitalization = 1,
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///
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text_uppercase = 2
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};
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///
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enum AsStringParameter
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{
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AS_STR_NONE = 0, ///< No option, only printable characters.
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AS_STR_LABEL = 1, ///< Prefix with paragraph label.
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AS_STR_INSETS = 2, ///< Go into insets.
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AS_STR_NEWLINES = 4, ///< Get also newline characters.
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AS_STR_SKIPDELETE = 8, ///< Skip deleted text in change tracking.
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AS_STR_PLAINTEXT = 16 ///< Don't export formatting when descending into insets.
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};
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/// A Paragraph holds all text, attributes and insets in a text paragraph
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class Paragraph
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{
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public:
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///
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Paragraph();
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/// Copy constructor.
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Paragraph(Paragraph const &);
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/// Partial copy constructor.
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/// Copy the Paragraph contents from \p beg to \p end (without end).
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Paragraph(Paragraph const & par, pos_type beg, pos_type end);
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///
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Paragraph & operator=(Paragraph const &);
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///
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~Paragraph();
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///
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int id() const;
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///
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void setId(int id);
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///
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void addChangesToToc(DocIterator const & cdit, Buffer const & buf,
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bool output_active, TocBackend & backend) const;
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/// set the buffer flag if there are changes in the paragraph
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void addChangesToBuffer(Buffer const & buf) const;
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///
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bool isChangeUpdateRequired() const;
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///
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Language const * getParLanguage(BufferParams const &) const;
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///
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bool isRTL(BufferParams const &) const;
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///
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void changeLanguage(BufferParams const & bparams,
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Language const * from, Language const * to);
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///
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bool isMultiLingual(BufferParams const &) const;
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///
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void getLanguages(std::set<Language const *> &) const;
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/// Convert the paragraph to a string.
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/// \param AsStringParameter options. This can contain any combination of
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/// asStringParameter values. Valid examples:
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/// asString(AS_STR_LABEL)
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/// asString(AS_STR_LABEL | AS_STR_INSETS)
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/// asString(AS_STR_INSETS)
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docstring asString(int options = AS_STR_NONE) const;
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/// Convert the paragraph to a string.
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/// \note If options includes AS_STR_PLAINTEXT, then runparams must be != 0
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docstring asString(pos_type beg, pos_type end,
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int options = AS_STR_NONE,
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const OutputParams *runparams = 0) const;
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///
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void forOutliner(docstring &, size_t maxlen, bool shorten = true,
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bool label = true) const;
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///
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void write(std::ostream &, BufferParams const &,
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depth_type & depth) const;
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///
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void validate(LaTeXFeatures &) const;
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/// \param force means: output even if layout.inpreamble is true.
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void latex(BufferParams const &, Font const & outerfont, otexstream &,
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OutputParams const &, int start_pos = 0, int end_pos = -1,
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bool force = false) const;
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/// Can we drop the standard paragraph wrapper?
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bool emptyTag() const;
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/// Get the id of the paragraph, usefull for docbook
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std::string getID(Buffer const & buf, OutputParams const & runparams) const;
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/// Output the first word of a paragraph, return the position where it left.
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pos_type firstWordDocBook(odocstream & os, OutputParams const & runparams) const;
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/// Output the first word of a paragraph, return the position where it left.
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pos_type firstWordLyXHTML(XHTMLStream & xs, OutputParams const & runparams) const;
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/// Writes to stream the docbook representation
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void simpleDocBookOnePar(Buffer const & buf,
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odocstream &,
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OutputParams const & runparams,
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Font const & outerfont,
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pos_type initial = 0) const;
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/// \return any material that has had to be deferred until after the
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/// paragraph has closed.
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docstring simpleLyXHTMLOnePar(Buffer const & buf,
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XHTMLStream & xs,
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OutputParams const & runparams,
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Font const & outerfont,
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bool start_paragraph = true,
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bool close_paragraph = true,
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pos_type initial = 0) const;
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///
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bool hasSameLayout(Paragraph const & par) const;
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///
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void makeSameLayout(Paragraph const & par);
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///
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void setInsetOwner(Inset const * inset);
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///
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Inset const & inInset() const;
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///
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bool allowParagraphCustomization() const;
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///
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bool usePlainLayout() const;
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///
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bool isPassThru() const;
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///
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pos_type size() const;
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///
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bool empty() const;
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///
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Layout const & layout() const;
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/// Do not pass a temporary to this!
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void setLayout(Layout const & layout);
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///
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void setPlainOrDefaultLayout(DocumentClass const & tc);
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///
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void setDefaultLayout(DocumentClass const & tc);
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///
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void setPlainLayout(DocumentClass const & tc);
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/// This is the item depth, only used by enumerate and itemize
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signed char itemdepth;
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/// look up change at given pos
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Change const & lookupChange(pos_type pos) const;
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/// is there a change within the given range ?
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bool isChanged(pos_type start, pos_type end) const;
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/// is there an unchanged char at the given pos ?
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bool isChanged(pos_type pos) const;
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/// is there an insertion at the given pos ?
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bool isInserted(pos_type pos) const;
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/// is there a deletion at the given pos ?
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bool isDeleted(pos_type pos) const;
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/// is the whole paragraph deleted ?
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bool isDeleted(pos_type start, pos_type end) const;
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/// will the paragraph be physically merged with the next
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/// one if the imaginary end-of-par character is logically deleted?
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bool isMergedOnEndOfParDeletion(bool trackChanges) const;
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/// set change for the entire par
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void setChange(Change const & change);
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/// set change at given pos
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void setChange(pos_type pos, Change const & change);
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/// accept changes within the given range
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void acceptChanges(pos_type start, pos_type end);
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/// reject changes within the given range
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void rejectChanges(pos_type start, pos_type end);
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/// Paragraphs can contain "manual labels", for example, Description
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/// environment. The text for this user-editable label is stored in
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/// the paragraph alongside the text of the rest of the paragraph
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/// (the body). This function returns the starting position of the
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/// body of the text in the paragraph.
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pos_type beginOfBody() const;
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/// recompute this value
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void setBeginOfBody();
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///
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docstring expandLabel(Layout const &, BufferParams const &) const;
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///
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docstring expandDocBookLabel(Layout const &, BufferParams const &) const;
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///
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docstring const & labelString() const;
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/// the next two functions are for the manual labels
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docstring const getLabelWidthString() const;
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/// Set label width string.
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void setLabelWidthString(docstring const & s);
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/// Actual paragraph alignment used
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LyXAlignment getAlign() const;
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/// The nesting depth of a paragraph
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depth_type getDepth() const;
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/// The maximal possible depth of a paragraph after this one
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depth_type getMaxDepthAfter() const;
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///
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void applyLayout(Layout const & new_layout);
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/// (logically) erase the char at pos; return true if it was actually erased
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bool eraseChar(pos_type pos, bool trackChanges);
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/// (logically) erase the given range; return the number of chars actually erased
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int eraseChars(pos_type start, pos_type end, bool trackChanges);
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///
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void resetFonts(Font const & font);
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/** Get uninstantiated font setting. Returns the difference
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between the characters font and the layoutfont.
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This is what is stored in the fonttable
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*/
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Font const &
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getFontSettings(BufferParams const &, pos_type pos) const;
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///
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Font const & getFirstFontSettings(BufferParams const &) const;
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/** Get fully instantiated font. If pos == -1, use the layout
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font attached to this paragraph.
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If pos == -2, use the label font of the layout attached here.
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In all cases, the font is instantiated, i.e. does not have any
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attributes with values FONT_INHERIT, FONT_IGNORE or
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FONT_TOGGLE.
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*/
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Font const getFont(BufferParams const &, pos_type pos,
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Font const & outerfont) const;
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Font const getLayoutFont(BufferParams const &,
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Font const & outerfont) const;
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Font const getLabelFont(BufferParams const &,
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Font const & outerfont) const;
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/**
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* The font returned by the above functions is the same in a
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* span of characters. This method will return the first and
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* the last positions in the paragraph for which that font is
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* the same. This can be used to avoid unnecessary calls to getFont.
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*/
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FontSpan fontSpan(pos_type pos) const;
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///
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char_type getChar(pos_type pos) const;
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/// Get the char, but mirror all bracket characters if it is right-to-left
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char_type getUChar(BufferParams const &, pos_type pos) const;
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/// pos <= size() (there is a dummy font change at the end of each par)
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void setFont(pos_type pos, Font const & font);
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///
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void insert(pos_type pos, docstring const & str,
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Font const & font, Change const & change);
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///
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void appendString(docstring const & s, Font const & font,
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Change const & change);
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///
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void appendChar(char_type c, Font const & font, Change const & change);
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///
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void insertChar(pos_type pos, char_type c, bool trackChanges);
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///
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void insertChar(pos_type pos, char_type c,
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Font const &, bool trackChanges);
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///
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void insertChar(pos_type pos, char_type c,
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Font const &, Change const & change);
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/// Insert \p inset at position \p pos with \p change traking status and
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/// \p font.
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/// \return true if successful.
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bool insertInset(pos_type pos, Inset * inset,
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Font const & font, Change const & change);
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///
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Inset * getInset(pos_type pos);
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///
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Inset const * getInset(pos_type pos) const;
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/// Release inset at given position.
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/// \warning does not honour change tracking!
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/// Therefore, it should only be used for breaking and merging
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/// paragraphs
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Inset * releaseInset(pos_type pos);
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///
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InsetList const & insetList() const;
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///
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void setBuffer(Buffer &);
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///
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void resetBuffer();
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///
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bool isHfill(pos_type pos) const;
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/// hinted by profiler
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bool isInset(pos_type pos) const;
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///
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bool isNewline(pos_type pos) const;
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///
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bool isEnvSeparator(pos_type pos) const;
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/// return true if the char is a word separator
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bool isSeparator(pos_type pos) const;
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///
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bool isLineSeparator(pos_type pos) const;
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/// True if the character/inset at this point is a word separator.
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/// Note that digits in particular are not considered as word separator.
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bool isWordSeparator(pos_type pos) const;
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/// True if the element at this point is a character that is not a letter.
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bool isChar(pos_type pos) const;
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/// True if the element at this point is a space
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bool isSpace(pos_type pos) const;
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/// True if the element at this point is a hard hyphen or a apostrophe
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/// If it is enclosed by spaces return false
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bool isHardHyphenOrApostrophe(pos_type pos) const;
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/// returns true if at least one line break or line separator has been deleted
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/// at the beginning of the paragraph (either physically or logically)
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bool stripLeadingSpaces(bool trackChanges);
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/// return true if we allow multiple spaces
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bool isFreeSpacing() const;
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/// return true if we allow this par to stay empty
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bool allowEmpty() const;
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///
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ParagraphParameters & params();
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///
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ParagraphParameters const & params() const;
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/// Check whether a call to fixBiblio is needed.
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bool brokenBiblio() const;
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/// Check if we are in a Biblio environment and insert or
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/// delete InsetBibitems as necessary.
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/// \retval int 1, if we had to add an inset, in which case
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/// the cursor will need to move cursor forward; -pos, if we deleted
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/// an inset, in which case pos is the position from which the inset
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/// was deleted, and the cursor will need to be moved back one if it
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/// was previously past that position. Return 0 otherwise.
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int fixBiblio(Buffer const & buffer);
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/// For each author, set 'used' to true if there is a change
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/// by this author in the paragraph.
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void checkAuthors(AuthorList const & authorList);
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///
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void changeCase(BufferParams const & bparams, pos_type pos,
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pos_type & right, TextCase action);
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/// find \param str string inside Paragraph.
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/// \return non-zero if the specified string is at the specified
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/// position; returned value is the actual match length in positions
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/// \param del specifies whether deleted strings in ct mode will be considered
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int find(
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docstring const & str, ///< string to search
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bool cs, ///<
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bool mw, ///<
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pos_type pos, ///< start from here.
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bool del = true) const;
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void locateWord(pos_type & from, pos_type & to,
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word_location const loc) const;
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///
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void updateWords();
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/// Spellcheck word at position \p from and fill in found misspelled word
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/// and \p suggestions if \p do_suggestion is true.
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/// \return result from spell checker, SpellChecker::UNKNOWN_WORD when misspelled.
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SpellChecker::Result spellCheck(pos_type & from, pos_type & to, WordLangTuple & wl,
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docstring_list & suggestions, bool do_suggestion = true,
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bool check_learned = false) const;
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/// Spell checker status at position \p pos.
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/// If \p check_boundary is true the status of position immediately
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/// before \p pos is tested too if it is at word boundary.
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/// \return true if one of the tested positions is misspelled.
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bool isMisspelled(pos_type pos, bool check_boundary = false) const;
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/// \return the spell range (misspelled area) around position.
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/// Range is empty if word at position is correctly spelled.
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FontSpan const & getSpellRange(pos_type pos) const;
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/// spell check of whole paragraph
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/// remember results until call of requestSpellCheck()
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void spellCheck() const;
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/// query state of spell checker results
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bool needsSpellCheck() const;
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/// mark position of text manipulation to inform the spell checker
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/// default value -1 marks the whole paragraph to be checked (again)
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void requestSpellCheck(pos_type pos = -1);
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/// an automatically generated identifying label for this paragraph.
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/// presently used only in the XHTML output routines.
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std::string magicLabel() const;
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private:
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/// Expand the counters for the labelstring of \c layout
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docstring expandParagraphLabel(Layout const &, BufferParams const &,
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bool process_appendix) const;
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///
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void deregisterWords();
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///
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void collectWords();
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///
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void registerWords();
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/// Pimpl away stuff
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class Private;
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///
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friend class Paragraph::Private;
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///
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Private * d;
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};
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} // namespace lyx
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#endif // PARAGRAPH_H
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