lyx_mirror/src/paragraph.h
Jean-Marc Lasgouttes 07aead5b21 Fix bug 3080
* src/paragraph.C (adjust_row_column): renamed from adjust_column_count;
	add texrow argument and adjust row as needed.
        (startTeXParParams, endTeXParParams, simpleTeXOnePar): adjust to above 
	changes.


git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@17342 a592a061-630c-0410-9148-cb99ea01b6c8
2007-02-25 13:20:29 +00:00

393 lines
11 KiB
C++

// -*- C++ -*-
/**
* \file paragraph.h
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author Asger Alstrup
* \author Lars Gullik Bjønnes
* \author John Levon
* \author André Pönitz
* \author Jürgen Vigna
*
* Full author contact details are available in file CREDITS.
*/
#ifndef PARAGRAPH_H
#define PARAGRAPH_H
#include "changes.h"
#include "dimension.h"
#include "InsetList.h"
#include "lyxlayout_ptr_fwd.h"
#include "RowList_fwd.h"
#include "insets/insetbase.h" // only for InsetBase::Code
namespace lyx {
class Buffer;
class BufferParams;
class Counters;
class InsetBase;
class InsetBibitem;
class LaTeXFeatures;
class InsetBase_code;
class Language;
class LyXFont;
class LyXFont_size;
class MetricsInfo;
class OutputParams;
class PainterInfo;
class ParagraphParameters;
class TexRow;
class FontSpan {
public:
/// Invalid font span containing no character
FontSpan() : first(0), last(-1) {}
/// Span including first and last
FontSpan(pos_type f, pos_type l) : first(f), last(l) {}
public:
/// Range including first and last.
pos_type first, last;
};
/// A Paragraph holds all text, attributes and insets in a text paragraph
/// \todo FIXME: any reference to ParagraphMetrics (including inheritance)
/// should go in order to complete the Model/View separation of this class.
class Paragraph {
public:
///
enum {
/// Note that this is 1 right now to avoid
/// crashes where getChar() is called wrongly
/// (returning 0) - if this was 0, then we'd
/// try getInset() and crash. We should fix
/// all these places.
//META_INSET = 1 // as in trunk
META_INSET = 0x200001 // above 0x10ffff, for ucs-4
};
///
typedef char_type value_type;
///
typedef std::vector<value_type> TextContainer;
///
Paragraph();
///
Paragraph(Paragraph const &);
///
Paragraph & operator=(Paragraph const &);
///
~Paragraph();
///
int id() const;
///
Language const * getParLanguage(BufferParams const &) const;
///
bool isRightToLeftPar(BufferParams const &) const;
///
void changeLanguage(BufferParams const & bparams,
Language const * from, Language const * to);
///
bool isMultiLingual(BufferParams const &) const;
///
docstring const asString(Buffer const &, bool label) const;
///
docstring const asString(Buffer const & buffer,
pos_type beg,
pos_type end,
bool label) const;
///
void write(Buffer const &, std::ostream &, BufferParams const &,
depth_type & depth) const;
///
void validate(LaTeXFeatures &) const;
///
int startTeXParParams(BufferParams const &, odocstream &, TexRow &,
bool) const;
///
int endTeXParParams(BufferParams const &, odocstream &, TexRow &,
bool) const;
///
bool simpleTeXOnePar(Buffer const &, BufferParams const &,
LyXFont const & outerfont, odocstream &,
TexRow & texrow, OutputParams const &) const;
/// Can we drop the standard paragraph wrapper?
bool emptyTag() const;
/// Get the id of the paragraph, usefull for docbook
std::string getID(Buffer const & buf,
OutputParams const & runparams) const;
/// Get the first word of a paragraph, return the position where it left
pos_type getFirstWord(Buffer const & buf,
odocstream & os,
OutputParams const & runparams) const;
/// Checks if the paragraph contains only text and no inset or font change.
bool onlyText(Buffer const & buf, LyXFont const & outerfont,
pos_type initial) const;
/// Writes to stream the docbook representation
void simpleDocBookOnePar(Buffer const & buf,
odocstream &,
OutputParams const & runparams,
LyXFont const & outerfont,
pos_type initial = 0) const;
///
bool hasSameLayout(Paragraph const & par) const;
///
void makeSameLayout(Paragraph const & par);
///
void setInsetOwner(InsetBase * inset);
///
InsetBase * inInset() const;
///
InsetBase::Code ownerCode() const;
///
bool forceDefaultParagraphs() const;
///
pos_type size() const { return text_.size(); }
///
bool empty() const { return text_.empty(); }
///
LyXLayout_ptr const & layout() const;
///
void layout(LyXLayout_ptr const & new_layout);
/// This is the item depth, only used by enumerate and itemize
signed char itemdepth;
///
InsetBibitem * bibitem() const; // ale970302
/// look up change at given pos
Change const & lookupChange(pos_type pos) const;
/// is there a change within the given range ?
bool isChanged(pos_type start, pos_type end) const;
/// is there an unchanged char at the given pos ?
bool isUnchanged(pos_type pos) const {
return lookupChange(pos).type == Change::UNCHANGED;
}
/// is there an insertion at the given pos ?
bool isInserted(pos_type pos) const {
return lookupChange(pos).type == Change::INSERTED;
}
/// is there a deletion at the given pos ?
bool isDeleted(pos_type pos) const {
return lookupChange(pos).type == Change::DELETED;
}
/// will the paragraph be physically merged with the next
/// one if the imaginary end-of-par character is logically deleted?
bool isMergedOnEndOfParDeletion(bool trackChanges) const;
/// set change for the entire par
void setChange(Change const & change);
/// set change at given pos
void setChange(pos_type pos, Change const & change);
/// accept changes within the given range
void acceptChanges(BufferParams const & bparams, pos_type start, pos_type end);
/// reject changes within the given range
void rejectChanges(BufferParams const & bparams, pos_type start, pos_type end);
/// Paragraphs can contain "manual labels", for example, Description
/// environment. The text for this user-editable label is stored in
/// the paragraph alongside the text of the rest of the paragraph
/// (the body). This function returns the starting position of the
/// body of the text in the paragraph.
pos_type beginOfBody() const;
/// recompute this value
void setBeginOfBody();
///
docstring const & getLabelstring() const;
/// the next two functions are for the manual labels
docstring const getLabelWidthString() const;
/// Set label width string.
void setLabelWidthString(docstring const & s);
/// translate \p label to the paragraph language if possible.
docstring const translateIfPossible(docstring const & label,
BufferParams const & bparams) const;
/// Expand the counters for the labelstring of \c layout
docstring expandLabel(LyXLayout_ptr const &, BufferParams const &,
bool process_appendix = true) const;
/// Actual paragraph alignment used
char getAlign() const;
/// The nesting depth of a paragraph
depth_type getDepth() const;
/// The maximal possible depth of a paragraph after this one
depth_type getMaxDepthAfter() const;
///
void applyLayout(LyXLayout_ptr const & new_layout);
/// (logically) erase the char at pos; return true if it was actually erased
bool eraseChar(pos_type pos, bool trackChanges);
/// (logically) erase the given range; return the number of chars actually erased
int eraseChars(pos_type start, pos_type end, bool trackChanges);
/** Get uninstantiated font setting. Returns the difference
between the characters font and the layoutfont.
This is what is stored in the fonttable
*/
LyXFont const
getFontSettings(BufferParams const &, pos_type pos) const;
///
LyXFont const getFirstFontSettings(BufferParams const &) const;
/** Get fully instantiated font. If pos == -1, use the layout
font attached to this paragraph.
If pos == -2, use the label font of the layout attached here.
In all cases, the font is instantiated, i.e. does not have any
attributes with values LyXFont::INHERIT, LyXFont::IGNORE or
LyXFont::TOGGLE.
*/
LyXFont const getFont(BufferParams const &, pos_type pos,
LyXFont const & outerfont) const;
LyXFont const getLayoutFont(BufferParams const &,
LyXFont const & outerfont) const;
LyXFont const getLabelFont(BufferParams const &,
LyXFont const & outerfont) const;
/**
* The font returned by the above functions is the same in a
* span of characters. This method will return the first and
* the last positions in the paragraph for which that font is
* the same. This can be used to avoid unnecessary calls to getFont.
*/
FontSpan fontSpan(pos_type pos) const;
///
/// this is a bottleneck.
value_type getChar(pos_type pos) const { return text_[pos]; }
/// Get the char, but mirror all bracket characters if it is right-to-left
value_type getUChar(BufferParams const &, pos_type pos) const;
/// pos <= size() (there is a dummy font change at the end of each par)
void setFont(pos_type pos, LyXFont const & font);
/// Returns the height of the highest font in range
LyXFont_size highestFontInRange(pos_type startpos,
pos_type endpos, LyXFont_size def_size) const;
///
void insert(pos_type pos, docstring const & str,
LyXFont const & font, Change const & change);
///
void insertChar(pos_type pos, value_type c, bool trackChanges);
///
void insertChar(pos_type pos, value_type c,
LyXFont const &, bool trackChanges);
///
void insertChar(pos_type pos, value_type c,
LyXFont const &, Change const & change);
///
void insertInset(pos_type pos, InsetBase * inset,
Change const & change);
///
void insertInset(pos_type pos, InsetBase * inset,
LyXFont const &, Change const & change);
///
bool insetAllowed(InsetBase_code code);
///
InsetBase * getInset(pos_type pos) {
return insetlist.get(pos);
}
///
InsetBase const * getInset(pos_type pos) const {
return insetlist.get(pos);
}
///
bool isHfill(pos_type pos) const {
return isInset(pos)
&& getInset(pos)->lyxCode() == InsetBase::HFILL_CODE;
}
/// hinted by profiler
bool isInset(pos_type pos) const {
return getChar(pos) == static_cast<value_type>(META_INSET);
}
///
bool isNewline(pos_type pos) const;
/// return true if the char is a word separator
bool isSeparator(pos_type pos) const { return getChar(pos) == ' '; }
///
bool isLineSeparator(pos_type pos) const;
/// True if the character/inset at this point can be part of a word.
/// Note that digits in particular are considered as letters
bool isLetter(pos_type pos) const;
/// returns -1 if inset not found
int getPositionOfInset(InsetBase const * inset) const;
/// returns true if at least one line break or line separator has been deleted
/// at the beginning of the paragraph (either physically or logically)
bool stripLeadingSpaces(bool trackChanges);
/// return true if we allow multiple spaces
bool isFreeSpacing() const;
/// return true if we allow this par to stay empty
bool allowEmpty() const;
///
char_type transformChar(char_type c, pos_type pos) const;
///
ParagraphParameters & params();
///
ParagraphParameters const & params() const;
///
bool hfillExpansion(Row const & row, pos_type pos) const;
/// Check if we are in a Biblio environment.
/// \retval true if the cursor needs to be moved right.
bool checkBiblio(bool track_changes);
public:
///
InsetList insetlist;
private:
///
LyXLayout_ptr layout_;
/**
* Keeping this here instead of in the pimpl makes LyX >10% faster
* for average tasks as buffer loading/switching etc.
*/
TextContainer text_;
/// end of label
pos_type begin_of_body_;
/// Pimpl away stuff
class Pimpl;
///
friend class Paragraph::Pimpl;
///
Pimpl * pimpl_;
};
} // namespace lyx
#endif // PARAGRAPH_H