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https://git.lyx.org/repos/lyx.git
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52a2eb2c52
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@10424 a592a061-630c-0410-9148-cb99ea01b6c8
442 lines
12 KiB
C++
442 lines
12 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 "changes.h"
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#include "dimension.h"
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#include "InsetList.h"
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#include "lyxlayout_ptr_fwd.h"
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#include "RowList_fwd.h"
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#include "insets/insetbase.h" // only for InsetBase::Code
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#include "support/types.h"
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#include <string>
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class Buffer;
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class BufferParams;
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class BufferView;
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class Counters;
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class InsetBase;
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class InsetBibitem;
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class LaTeXFeatures;
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class InsetBase_code;
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class Language;
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class LyXFont;
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class LyXFont_size;
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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 TexRow;
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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(lyx::pos_type f, lyx::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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lyx::pos_type first, last;
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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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public:
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///
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enum {
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/// Note that this is 1 right now to avoid
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/// crashes where getChar() is called wrongly
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/// (returning 0) - if this was 0, then we'd
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/// try getInset() and crash. We should fix
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/// all these places.
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META_INSET = 1
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};
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///
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typedef char value_type;
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///
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typedef lyx::depth_type depth_type;
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///
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typedef std::vector<value_type> TextContainer;
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///
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Paragraph();
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///
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Paragraph(Paragraph const &);
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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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Language const * getParLanguage(BufferParams const &) const;
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///
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bool isRightToLeftPar(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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std::string const asString(Buffer const &,
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OutputParams const & runparams,
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bool label) const;
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///
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std::string const asString(Buffer const &, bool label) const;
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///
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std::string const Paragraph::asString(Buffer const & buffer,
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lyx::pos_type beg,
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lyx::pos_type end,
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bool label) const;
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///
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std::string const asString(Buffer const &,
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OutputParams const & runparams,
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lyx::pos_type beg,
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lyx::pos_type end,
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bool label) const;
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///
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void write(Buffer const &, 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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///
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int startTeXParParams(BufferParams const &, std::ostream &, bool) const;
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///
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int endTeXParParams(BufferParams const &, std::ostream &, bool) const;
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///
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bool simpleTeXOnePar(Buffer const &, BufferParams const &,
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LyXFont const & outerfont, std::ostream &,
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TexRow & texrow, OutputParams const &) const;
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/// Writes to stream the content of the paragraph for linuxdoc
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void simpleLinuxDocOnePar(Buffer const & buf,
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std::ostream & os,
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LyXFont const & outerfont,
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OutputParams const & runparams,
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lyx::depth_type depth) 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 and linuxdoc
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std::string getID(Buffer const & buf,
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OutputParams const & runparams) const;
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// Get the first word of a paragraph, return the position where it left
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lyx::pos_type getFirstWord(Buffer const & buf,
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std::ostream & os,
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OutputParams const & runparams) const;
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/// Checks if the paragraph contains only text and no inset or font change.
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bool onlyText(Buffer const & buf, LyXFont const & outerfont,
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lyx::pos_type initial) const;
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/// Writes to stream the docbook representation
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void simpleDocBookOnePar(Buffer const & buf,
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std::ostream &,
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OutputParams const & runparams,
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LyXFont const & outerfont,
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lyx::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(InsetBase * inset);
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///
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InsetBase * inInset() const;
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///
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InsetBase::Code ownerCode() const;
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///
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bool forceDefaultParagraphs() const;
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///
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lyx::pos_type size() const { return text_.size(); }
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///
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bool empty() const { return text_.empty(); }
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///
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void setContentsFromPar(Paragraph const & par);
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///
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void clearContents();
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///
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LyXLayout_ptr const & layout() const;
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///
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void layout(LyXLayout_ptr const & new_layout);
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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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///
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InsetBibitem * bibitem() const; // ale970302
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/// initialise tracking for this par
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void trackChanges(Change::Type = Change::UNCHANGED);
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/// stop tracking
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void untrackChanges();
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/// set entire paragraph to new text for change tracking
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void cleanChanges();
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/// look up change type at given pos
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Change::Type lookupChange(lyx::pos_type pos) const;
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/// look up change at given pos
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Change const lookupChangeFull(lyx::pos_type pos) const;
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/// is there a change within the given range ?
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bool isChanged(lyx::pos_type start, lyx::pos_type end) const;
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/// is there a non-addition in this range ?
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bool isChangeEdited(lyx::pos_type start, lyx::pos_type end) const;
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/// set change at pos
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void setChange(lyx::pos_type pos, Change::Type type);
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/// accept change
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void acceptChange(lyx::pos_type start, lyx::pos_type end);
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/// reject change
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void rejectChange(lyx::pos_type start, lyx::pos_type end);
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/// mark whole par as erased or not
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void markErased(bool erased);
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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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lyx::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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std::string const & getLabelstring() const;
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/// the next two functions are for the manual labels
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std::string const getLabelWidthString() const;
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///
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void setLabelWidthString(std::string const & s);
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///
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char 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(LyXLayout_ptr const & new_layout);
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/// definite erase
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void eraseIntern(lyx::pos_type pos);
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/// erase the char at the given position
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bool erase(lyx::pos_type pos);
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/// erase the given range. Returns the number of chars actually erased
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int erase(lyx::pos_type start, lyx::pos_type end);
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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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LyXFont const
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getFontSettings(BufferParams const &, lyx::pos_type pos) const;
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///
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LyXFont const getFirstFontSettings() 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 LyXFont::INHERIT, LyXFont::IGNORE or
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LyXFont::TOGGLE.
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*/
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LyXFont const getFont(BufferParams const &, lyx::pos_type pos,
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LyXFont const & outerfont) const;
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LyXFont const getLayoutFont(BufferParams const &,
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LyXFont const & outerfont) const;
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LyXFont const getLabelFont(BufferParams const &,
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LyXFont 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
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* getFont.
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*/
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FontSpan fontSpan(lyx::pos_type pos) const;
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///
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/// this is a bottleneck.
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value_type getChar(lyx::pos_type pos) const { return text_[pos]; }
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/// Get the char, but mirror all bracket characters if it is right-to-left
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value_type getUChar(BufferParams const &, lyx::pos_type pos) const;
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/// The position must already exist.
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void setChar(lyx::pos_type pos, value_type c);
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/// pos <= size() (there is a dummy font change at the end of each par)
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void setFont(lyx::pos_type pos, LyXFont const & font);
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/// Returns the height of the highest font in range
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LyXFont_size highestFontInRange(lyx::pos_type startpos,
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lyx::pos_type endpos,
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LyXFont_size def_size) const;
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///
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void insert(lyx::pos_type pos, std::string const & str,
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LyXFont const & font);
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///
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void insertChar(lyx::pos_type pos, value_type c,
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Change change = Change::INSERTED);
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///
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void insertChar(lyx::pos_type pos, value_type c,
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LyXFont const &, Change change = Change::INSERTED);
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///
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void insertInset(lyx::pos_type pos, InsetBase * inset,
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Change change = Change::INSERTED);
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///
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void insertInset(lyx::pos_type pos, InsetBase * inset,
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LyXFont const &, Change change = Change::INSERTED);
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///
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bool insetAllowed(InsetBase_code code);
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///
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InsetBase * getInset(lyx::pos_type pos) {
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return insetlist.get(pos);
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}
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///
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InsetBase const * getInset(lyx::pos_type pos) const {
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return insetlist.get(pos);
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}
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///
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bool isHfill(lyx::pos_type pos) const {
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return isInset(pos)
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&& getInset(pos)->lyxCode() == InsetBase::HFILL_CODE;
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}
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/// hinted by profiler
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bool isInset(lyx::pos_type pos) const {
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return getChar(pos) == static_cast<value_type>(META_INSET);
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}
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///
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bool isNewline(lyx::pos_type pos) const;
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/// return true if the char is a word separator
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bool isSeparator(lyx::pos_type pos) const { return getChar(pos) == ' '; }
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///
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bool isLineSeparator(lyx::pos_type pos) const;
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/// True if the character/inset at this point can be part of a word
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// Note that digits in particular are considered as letters
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bool isLetter(lyx::pos_type pos) const;
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/// returns -1 if inset not found
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int getPositionOfInset(InsetBase const * inset) const;
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/// Returns the number of line breaks and white-space stripped at the start
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int stripLeadingSpaces();
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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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unsigned char transformChar(unsigned char c, lyx::pos_type pos) 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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///
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Row & getRow(lyx::pos_type pos, bool boundary);
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///
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Row const & getRow(lyx::pos_type pos, bool boundary) const;
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///
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size_t pos2row(lyx::pos_type pos) const;
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/// total height of paragraph
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unsigned int height() const { return dim_.height(); }
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/// total width of paragraph, may differ from workwidth
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unsigned int width() const { return dim_.width(); }
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/// ascend of paragraph above baseline
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unsigned int ascent() const { return dim_.ascent(); }
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/// descend of paragraph below baseline
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unsigned int descent() const { return dim_.descent(); }
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/// LyXText updates the rows using this access point
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RowList & rows() { return rows_; }
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/// The painter and others use this
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RowList const & rows() const { return rows_; }
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/// LyXText::redoParagraph updates this
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Dimension & dim() { return dim_; }
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/// dump some information to lyxerr
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void dump() const;
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public:
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///
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InsetList insetlist;
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private:
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/// cached dimensions of paragraph
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Dimension dim_;
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///
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mutable RowList rows_;
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///
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LyXLayout_ptr layout_;
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/**
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* Keeping this here instead of in the pimpl makes LyX >10% faster
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* for average tasks as buffer loading/switching etc.
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*/
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TextContainer text_;
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/// end of label
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lyx::pos_type begin_of_body_;
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/// Pimpl away stuff
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class Pimpl;
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///
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friend class Paragraph::Pimpl;
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///
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Pimpl * pimpl_;
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};
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inline bool isInsertedText(Paragraph const & par, lyx::pos_type pos)
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{
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return par.lookupChange(pos) == Change::INSERTED;
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}
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inline bool isDeletedText(Paragraph const & par, lyx::pos_type pos)
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{
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return par.lookupChange(pos) == Change::DELETED;
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}
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#endif // PARAGRAPH_H
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