lyx_mirror/src/text.C
Abdelrazak Younes bf61ecc2de Support code for advanced Toc management and bug correction.
* buffer.h:
  - structureChanged(): new boost signal. I intend to use that also when a text is changed in a section or caption item.

* buffer_funcs.C:
  - updateLabels(): emit Buffer::structureChanged() after TocBackend is updated.
  - checkBufferStructure(): new method for updating the TocBackend if needed.

* LyXView:
  - updateToc(): new slot for Buffer::structureChanged() signal.

* text.C:
  - call checkBufferStructure() whenever text is added or erased.

* TocBackend.[Ch]:
  - updateItem(): new method to update a specific item (called from checkBufferStructure()).



git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@17413 a592a061-630c-0410-9148-cb99ea01b6c8
2007-03-12 11:23:41 +00:00

1894 lines
52 KiB
C

/**
* \file src/text.C
* 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 Jean-Marc Lasgouttes
* \author John Levon
* \author André Pönitz
* \author Dekel Tsur
* \author Jürgen Vigna
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "lyxtext.h"
#include "author.h"
#include "buffer.h"
#include "buffer_funcs.h"
#include "bufferparams.h"
#include "BufferView.h"
#include "bufferview_funcs.h"
#include "cursor.h"
#include "pariterator.h"
#include "coordcache.h"
#include "CutAndPaste.h"
#include "debug.h"
#include "dispatchresult.h"
#include "encoding.h"
#include "errorlist.h"
#include "funcrequest.h"
#include "factory.h"
#include "FontIterator.h"
#include "gettext.h"
#include "language.h"
#include "LColor.h"
#include "lyxlength.h"
#include "lyxlex.h"
#include "lyxrc.h"
#include "lyxrow.h"
#include "metricsinfo.h"
#include "paragraph.h"
#include "paragraph_funcs.h"
#include "ParagraphParameters.h"
#include "rowpainter.h"
#include "undo.h"
#include "vspace.h"
#include "WordLangTuple.h"
#include "frontends/FontMetrics.h"
#include "frontends/Painter.h"
#include "insets/insettext.h"
#include "insets/insetbibitem.h"
#include "insets/insethfill.h"
#include "insets/insetline.h"
#include "insets/insetnewline.h"
#include "insets/insetpagebreak.h"
#include "insets/insetoptarg.h"
#include "insets/insetspace.h"
#include "insets/insetspecialchar.h"
#include "insets/insettabular.h"
#include "support/lstrings.h"
#include "support/textutils.h"
#include "support/convert.h"
#include <boost/current_function.hpp>
#include <sstream>
using std::auto_ptr;
using std::advance;
using std::distance;
using std::max;
using std::min;
using std::endl;
using std::string;
namespace lyx {
using support::bformat;
using support::contains;
using support::lowercase;
using support::split;
using support::uppercase;
using cap::cutSelection;
using cap::pasteParagraphList;
using frontend::FontMetrics;
namespace {
void readParToken(Buffer const & buf, Paragraph & par, LyXLex & lex,
string const & token, LyXFont & font, Change & change, ErrorList & errorList)
{
BufferParams const & bp = buf.params();
if (token[0] != '\\') {
#if 0
string::const_iterator cit = token.begin();
for (; cit != token.end(); ++cit)
par.insertChar(par.size(), (*cit), font, change);
#else
docstring dstr = lex.getDocString();
docstring::const_iterator cit = dstr.begin();
docstring::const_iterator cend = dstr.end();
for (; cit != cend; ++cit)
par.insertChar(par.size(), *cit, font, change);
#endif
} else if (token == "\\begin_layout") {
lex.eatLine();
string layoutname = lex.getString();
font = LyXFont(LyXFont::ALL_INHERIT, bp.language);
change = Change(Change::UNCHANGED);
LyXTextClass const & tclass = bp.getLyXTextClass();
if (layoutname.empty()) {
layoutname = tclass.defaultLayoutName();
}
bool hasLayout = tclass.hasLayout(layoutname);
if (!hasLayout) {
errorList.push_back(ErrorItem(_("Unknown layout"),
bformat(_("Layout '%1$s' does not exist in textclass '%2$s'\nTrying to use the default instead.\n"),
from_utf8(layoutname), from_utf8(tclass.name())), par.id(), 0, par.size()));
layoutname = tclass.defaultLayoutName();
}
par.layout(bp.getLyXTextClass()[layoutname]);
// Test whether the layout is obsolete.
LyXLayout_ptr const & layout = par.layout();
if (!layout->obsoleted_by().empty())
par.layout(bp.getLyXTextClass()[layout->obsoleted_by()]);
par.params().read(lex);
} else if (token == "\\end_layout") {
lyxerr << BOOST_CURRENT_FUNCTION
<< ": Solitary \\end_layout in line "
<< lex.getLineNo() << "\n"
<< "Missing \\begin_layout?.\n";
} else if (token == "\\end_inset") {
lyxerr << BOOST_CURRENT_FUNCTION
<< ": Solitary \\end_inset in line "
<< lex.getLineNo() << "\n"
<< "Missing \\begin_inset?.\n";
} else if (token == "\\begin_inset") {
InsetBase * inset = readInset(lex, buf);
if (inset)
par.insertInset(par.size(), inset, font, change);
else {
lex.eatLine();
docstring line = lex.getDocString();
errorList.push_back(ErrorItem(_("Unknown Inset"), line,
par.id(), 0, par.size()));
}
} else if (token == "\\family") {
lex.next();
font.setLyXFamily(lex.getString());
} else if (token == "\\series") {
lex.next();
font.setLyXSeries(lex.getString());
} else if (token == "\\shape") {
lex.next();
font.setLyXShape(lex.getString());
} else if (token == "\\size") {
lex.next();
font.setLyXSize(lex.getString());
} else if (token == "\\lang") {
lex.next();
string const tok = lex.getString();
Language const * lang = languages.getLanguage(tok);
if (lang) {
font.setLanguage(lang);
} else {
font.setLanguage(bp.language);
lex.printError("Unknown language `$$Token'");
}
} else if (token == "\\numeric") {
lex.next();
font.setNumber(font.setLyXMisc(lex.getString()));
} else if (token == "\\emph") {
lex.next();
font.setEmph(font.setLyXMisc(lex.getString()));
} else if (token == "\\bar") {
lex.next();
string const tok = lex.getString();
if (tok == "under")
font.setUnderbar(LyXFont::ON);
else if (tok == "no")
font.setUnderbar(LyXFont::OFF);
else if (tok == "default")
font.setUnderbar(LyXFont::INHERIT);
else
lex.printError("Unknown bar font flag "
"`$$Token'");
} else if (token == "\\noun") {
lex.next();
font.setNoun(font.setLyXMisc(lex.getString()));
} else if (token == "\\color") {
lex.next();
font.setLyXColor(lex.getString());
} else if (token == "\\InsetSpace" || token == "\\SpecialChar") {
// Insets don't make sense in a free-spacing context! ---Kayvan
if (par.isFreeSpacing()) {
if (token == "\\InsetSpace")
par.insertChar(par.size(), ' ', font, change);
else if (lex.isOK()) {
lex.next();
string const next_token = lex.getString();
if (next_token == "\\-")
par.insertChar(par.size(), '-', font, change);
else {
lex.printError("Token `$$Token' "
"is in free space "
"paragraph layout!");
}
}
} else {
auto_ptr<InsetBase> inset;
if (token == "\\SpecialChar" )
inset.reset(new InsetSpecialChar);
else
inset.reset(new InsetSpace);
inset->read(buf, lex);
par.insertInset(par.size(), inset.release(),
font, change);
}
} else if (token == "\\backslash") {
par.insertChar(par.size(), '\\', font, change);
} else if (token == "\\newline") {
auto_ptr<InsetBase> inset(new InsetNewline);
inset->read(buf, lex);
par.insertInset(par.size(), inset.release(), font, change);
} else if (token == "\\LyXTable") {
auto_ptr<InsetBase> inset(new InsetTabular(buf));
inset->read(buf, lex);
par.insertInset(par.size(), inset.release(), font, change);
} else if (token == "\\hfill") {
par.insertInset(par.size(), new InsetHFill, font, change);
} else if (token == "\\lyxline") {
par.insertInset(par.size(), new InsetLine, font, change);
} else if (token == "\\newpage") {
par.insertInset(par.size(), new InsetPagebreak, font, change);
} else if (token == "\\clearpage") {
par.insertInset(par.size(), new InsetClearPage, font, change);
} else if (token == "\\cleardoublepage") {
par.insertInset(par.size(), new InsetClearDoublePage, font, change);
} else if (token == "\\change_unchanged") {
change = Change(Change::UNCHANGED);
} else if (token == "\\change_inserted") {
lex.eatLine();
std::istringstream is(lex.getString());
unsigned int aid;
time_type ct;
is >> aid >> ct;
if (aid >= bp.author_map.size()) {
errorList.push_back(ErrorItem(_("Change tracking error"),
bformat(_("Unknown author index for insertion: %1$d\n"), aid),
par.id(), 0, par.size()));
change = Change(Change::UNCHANGED);
} else
change = Change(Change::INSERTED, bp.author_map[aid], ct);
} else if (token == "\\change_deleted") {
lex.eatLine();
std::istringstream is(lex.getString());
unsigned int aid;
time_type ct;
is >> aid >> ct;
if (aid >= bp.author_map.size()) {
errorList.push_back(ErrorItem(_("Change tracking error"),
bformat(_("Unknown author index for deletion: %1$d\n"), aid),
par.id(), 0, par.size()));
change = Change(Change::UNCHANGED);
} else
change = Change(Change::DELETED, bp.author_map[aid], ct);
} else {
lex.eatLine();
errorList.push_back(ErrorItem(_("Unknown token"),
bformat(_("Unknown token: %1$s %2$s\n"), from_utf8(token),
lex.getDocString()),
par.id(), 0, par.size()));
}
}
void readParagraph(Buffer const & buf, Paragraph & par, LyXLex & lex,
ErrorList & errorList)
{
lex.nextToken();
string token = lex.getString();
LyXFont font;
Change change(Change::UNCHANGED);
while (lex.isOK()) {
readParToken(buf, par, lex, token, font, change, errorList);
lex.nextToken();
token = lex.getString();
if (token.empty())
continue;
if (token == "\\end_layout") {
//Ok, paragraph finished
break;
}
lyxerr[Debug::PARSER] << "Handling paragraph token: `"
<< token << '\'' << endl;
if (token == "\\begin_layout" || token == "\\end_document"
|| token == "\\end_inset" || token == "\\begin_deeper"
|| token == "\\end_deeper") {
lex.pushToken(token);
lyxerr << "Paragraph ended in line "
<< lex.getLineNo() << "\n"
<< "Missing \\end_layout.\n";
break;
}
}
// Final change goes to paragraph break:
par.setChange(par.size(), change);
// Initialize begin_of_body_ on load; redoParagraph maintains
par.setBeginOfBody();
}
} // namespace anon
double LyXText::spacing(Buffer const & buffer,
Paragraph const & par) const
{
if (par.params().spacing().isDefault())
return buffer.params().spacing().getValue();
return par.params().spacing().getValue();
}
int LyXText::singleWidth(Buffer const & buffer, Paragraph const & par,
pos_type pos) const
{
return singleWidth(par, pos, par.getChar(pos),
getFont(buffer, par, pos));
}
int LyXText::singleWidth(Paragraph const & par,
pos_type pos, char_type c, LyXFont const & font) const
{
// The most common case is handled first (Asger)
if (isPrintable(c)) {
Language const * language = font.language();
if (language->rightToLeft()) {
if ((lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 ||
lyxrc.font_norm_type == LyXRC::ISO_10646_1)
&& language->lang() == "arabic") {
if (Encodings::isComposeChar_arabic(c))
return 0;
c = par.transformChar(c, pos);
} else if (language->lang() == "hebrew" &&
Encodings::isComposeChar_hebrew(c))
return 0;
}
return theFontMetrics(font).width(c);
}
if (c == Paragraph::META_INSET)
return par.getInset(pos)->width();
return theFontMetrics(font).width(c);
}
int LyXText::leftMargin(Buffer const & buffer, int max_width, pit_type pit) const
{
BOOST_ASSERT(pit >= 0);
BOOST_ASSERT(pit < int(pars_.size()));
return leftMargin(buffer, max_width, pit, pars_[pit].size());
}
int LyXText::leftMargin(Buffer const & buffer, int max_width,
pit_type const pit, pos_type const pos) const
{
BOOST_ASSERT(pit >= 0);
BOOST_ASSERT(pit < int(pars_.size()));
Paragraph const & par = pars_[pit];
BOOST_ASSERT(pos >= 0);
BOOST_ASSERT(pos <= par.size());
//lyxerr << "LyXText::leftMargin: pit: " << pit << " pos: " << pos << endl;
LyXTextClass const & tclass = buffer.params().getLyXTextClass();
LyXLayout_ptr const & layout = par.layout();
string parindent = layout->parindent;
int l_margin = 0;
if (isMainText(buffer))
l_margin += changebarMargin();
// FIXME UNICODE
docstring leftm = from_utf8(tclass.leftmargin());
l_margin += theFontMetrics(buffer.params().getFont()).signedWidth(leftm);
if (par.getDepth() != 0) {
// find the next level paragraph
pit_type newpar = outerHook(pit, pars_);
if (newpar != pit_type(pars_.size())) {
if (pars_[newpar].layout()->isEnvironment()) {
l_margin = leftMargin(buffer, max_width, newpar);
}
if (par.layout() == tclass.defaultLayout()) {
if (pars_[newpar].params().noindent())
parindent.erase();
else
parindent = pars_[newpar].layout()->parindent;
}
}
}
// This happens after sections in standard classes. The 1.3.x
// code compared depths too, but it does not seem necessary
// (JMarc)
if (par.layout() == tclass.defaultLayout()
&& pit > 0 && pars_[pit - 1].layout()->nextnoindent)
parindent.erase();
LyXFont const labelfont = getLabelFont(buffer, par);
FontMetrics const & labelfont_metrics = theFontMetrics(labelfont);
switch (layout->margintype) {
case MARGIN_DYNAMIC:
if (!layout->leftmargin.empty()) {
// FIXME UNICODE
docstring leftm = from_utf8(layout->leftmargin);
l_margin += theFontMetrics(buffer.params().getFont()).signedWidth(leftm);
}
if (!par.getLabelstring().empty()) {
// FIXME UNICODE
docstring labin = from_utf8(layout->labelindent);
l_margin += labelfont_metrics.signedWidth(labin);
docstring labstr = par.getLabelstring();
l_margin += labelfont_metrics.width(labstr);
docstring labsep = from_utf8(layout->labelsep);
l_margin += labelfont_metrics.width(labsep);
}
break;
case MARGIN_MANUAL: {
// FIXME UNICODE
docstring labin = from_utf8(layout->labelindent);
l_margin += labelfont_metrics.signedWidth(labin);
// The width of an empty par, even with manual label, should be 0
if (!par.empty() && pos >= par.beginOfBody()) {
if (!par.getLabelWidthString().empty()) {
docstring labstr = par.getLabelWidthString();
l_margin += labelfont_metrics.width(labstr);
docstring labsep = from_utf8(layout->labelsep);
l_margin += labelfont_metrics.width(labsep);
}
}
break;
}
case MARGIN_STATIC: {
// FIXME UNICODE
docstring leftm = from_utf8(layout->leftmargin);
l_margin += theFontMetrics(buffer.params().getFont()).signedWidth(leftm)
* 4 / (par.getDepth() + 4);
break;
}
case MARGIN_FIRST_DYNAMIC:
if (layout->labeltype == LABEL_MANUAL) {
if (pos >= par.beginOfBody()) {
// FIXME UNICODE
l_margin += labelfont_metrics.signedWidth(
from_utf8(layout->leftmargin));
} else {
// FIXME UNICODE
l_margin += labelfont_metrics.signedWidth(
from_utf8(layout->labelindent));
}
} else if (pos != 0
// Special case to fix problems with
// theorems (JMarc)
|| (layout->labeltype == LABEL_STATIC
&& layout->latextype == LATEX_ENVIRONMENT
&& !isFirstInSequence(pit, pars_))) {
// FIXME UNICODE
l_margin += labelfont_metrics.signedWidth(from_utf8(layout->leftmargin));
} else if (layout->labeltype != LABEL_TOP_ENVIRONMENT
&& layout->labeltype != LABEL_BIBLIO
&& layout->labeltype !=
LABEL_CENTERED_TOP_ENVIRONMENT) {
l_margin += labelfont_metrics.signedWidth(from_utf8(layout->labelindent));
l_margin += labelfont_metrics.width(from_utf8(layout->labelsep));
l_margin += labelfont_metrics.width(par.getLabelstring());
}
break;
case MARGIN_RIGHT_ADDRESS_BOX: {
#if 0
// ok, a terrible hack. The left margin depends on the widest
// row in this paragraph.
RowList::iterator rit = par.rows().begin();
RowList::iterator end = par.rows().end();
#ifdef WITH_WARNINGS
#warning This is wrong.
#endif
int minfill = max_width;
for ( ; rit != end; ++rit)
if (rit->fill() < minfill)
minfill = rit->fill();
l_margin += theFontMetrics(params.getFont()).signedWidth(layout->leftmargin);
l_margin += minfill;
#endif
// also wrong, but much shorter.
l_margin += max_width / 2;
break;
}
}
if (!par.params().leftIndent().zero())
l_margin += par.params().leftIndent().inPixels(max_width);
LyXAlignment align;
if (par.params().align() == LYX_ALIGN_LAYOUT)
align = layout->align;
else
align = par.params().align();
// set the correct parindent
if (pos == 0
&& (layout->labeltype == LABEL_NO_LABEL
|| layout->labeltype == LABEL_TOP_ENVIRONMENT
|| layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT
|| (layout->labeltype == LABEL_STATIC
&& layout->latextype == LATEX_ENVIRONMENT
&& !isFirstInSequence(pit, pars_)))
&& align == LYX_ALIGN_BLOCK
&& !par.params().noindent()
// in some insets, paragraphs are never indented
&& !(par.inInset() && par.inInset()->neverIndent(buffer))
// display style insets are always centered, omit indentation
&& !(!par.empty()
&& par.isInset(pos)
&& par.getInset(pos)->display())
&& (par.layout() != tclass.defaultLayout()
|| buffer.params().paragraph_separation ==
BufferParams::PARSEP_INDENT))
{
docstring din = from_utf8(parindent);
l_margin += theFontMetrics(buffer.params().getFont()).signedWidth(din);
}
return l_margin;
}
LColor_color LyXText::backgroundColor() const
{
return LColor_color(LColor::color(background_color_));
}
void LyXText::breakParagraph(LCursor & cur, bool keep_layout)
{
BOOST_ASSERT(this == cur.text());
Paragraph & cpar = cur.paragraph();
pit_type cpit = cur.pit();
LyXTextClass const & tclass = cur.buffer().params().getLyXTextClass();
LyXLayout_ptr const & layout = cpar.layout();
// this is only allowed, if the current paragraph is not empty
// or caption and if it has not the keepempty flag active
if (cur.lastpos() == 0 && !cpar.allowEmpty() &&
layout->labeltype != LABEL_SENSITIVE)
return;
// a layout change may affect also the following paragraph
recUndo(cur, cur.pit(), undoSpan(cur.pit()) - 1);
// Always break behind a space
// It is better to erase the space (Dekel)
if (cur.pos() != cur.lastpos() && cpar.isLineSeparator(cur.pos()))
cpar.eraseChar(cur.pos(), cur.buffer().params().trackChanges);
// What should the layout for the new paragraph be?
int preserve_layout = 0;
if (keep_layout)
preserve_layout = 2;
else
preserve_layout = layout->isEnvironment();
// We need to remember this before we break the paragraph, because
// that invalidates the layout variable
bool sensitive = layout->labeltype == LABEL_SENSITIVE;
// we need to set this before we insert the paragraph.
bool const isempty = cpar.allowEmpty() && cpar.empty();
lyx::breakParagraph(cur.buffer().params(), paragraphs(), cpit,
cur.pos(), preserve_layout);
// After this, neither paragraph contains any rows!
cpit = cur.pit();
pit_type next_par = cpit + 1;
// well this is the caption hack since one caption is really enough
if (sensitive) {
if (cur.pos() == 0)
// set to standard-layout
pars_[cpit].applyLayout(tclass.defaultLayout());
else
// set to standard-layout
pars_[next_par].applyLayout(tclass.defaultLayout());
}
while (!pars_[next_par].empty() && pars_[next_par].isNewline(0)) {
if (!pars_[next_par].eraseChar(0, cur.buffer().params().trackChanges))
break; // the character couldn't be deleted physically due to change tracking
}
ParIterator current_it(cur);
ParIterator last_it(cur);
++last_it;
++last_it;
updateLabels(cur.buffer(), current_it, last_it);
// A singlePar update is not enough in this case.
cur.updateFlags(Update::Force);
// This check is necessary. Otherwise the new empty paragraph will
// be deleted automatically. And it is more friendly for the user!
if (cur.pos() != 0 || isempty)
setCursor(cur.top(), cur.pit() + 1, 0);
else
setCursor(cur.top(), cur.pit(), 0);
}
// insert a character, moves all the following breaks in the
// same Paragraph one to the right and make a rebreak
void LyXText::insertChar(LCursor & cur, char_type c)
{
BOOST_ASSERT(this == cur.text());
BOOST_ASSERT(c != Paragraph::META_INSET);
recordUndo(cur, Undo::INSERT);
Buffer const & buffer = cur.buffer();
Paragraph & par = cur.paragraph();
// try to remove this
pit_type const pit = cur.pit();
bool const freeSpacing = par.layout()->free_spacing ||
par.isFreeSpacing();
if (lyxrc.auto_number) {
static docstring const number_operators = from_ascii("+-/*");
static docstring const number_unary_operators = from_ascii("+-");
static docstring const number_seperators = from_ascii(".,:");
if (current_font.number() == LyXFont::ON) {
if (!isDigit(c) && !contains(number_operators, c) &&
!(contains(number_seperators, c) &&
cur.pos() != 0 &&
cur.pos() != cur.lastpos() &&
getFont(buffer, par, cur.pos()).number() == LyXFont::ON &&
getFont(buffer, par, cur.pos() - 1).number() == LyXFont::ON)
)
number(cur); // Set current_font.number to OFF
} else if (isDigit(c) &&
real_current_font.isVisibleRightToLeft()) {
number(cur); // Set current_font.number to ON
if (cur.pos() != 0) {
char_type const c = par.getChar(cur.pos() - 1);
if (contains(number_unary_operators, c) &&
(cur.pos() == 1
|| par.isSeparator(cur.pos() - 2)
|| par.isNewline(cur.pos() - 2))
) {
setCharFont(buffer, pit, cur.pos() - 1, current_font);
} else if (contains(number_seperators, c)
&& cur.pos() >= 2
&& getFont(buffer, par, cur.pos() - 2).number() == LyXFont::ON) {
setCharFont(buffer, pit, cur.pos() - 1, current_font);
}
}
}
}
// First check, if there will be two blanks together or a blank at
// the beginning of a paragraph.
// I decided to handle blanks like normal characters, the main
// difference are the special checks when calculating the row.fill
// (blank does not count at the end of a row) and the check here
// When the free-spacing option is set for the current layout,
// disable the double-space checking
if (!freeSpacing && isLineSeparatorChar(c)) {
if (cur.pos() == 0) {
static bool sent_space_message = false;
if (!sent_space_message) {
cur.message(_("You cannot insert a space at the "
"beginning of a paragraph. Please read the Tutorial."));
sent_space_message = true;
}
return;
}
BOOST_ASSERT(cur.pos() > 0);
if ((par.isLineSeparator(cur.pos() - 1) || par.isNewline(cur.pos() - 1))
&& !par.isDeleted(cur.pos() - 1)) {
static bool sent_space_message = false;
if (!sent_space_message) {
cur.message(_("You cannot type two spaces this way. "
"Please read the Tutorial."));
sent_space_message = true;
}
return;
}
}
par.insertChar(cur.pos(), c, current_font, cur.buffer().params().trackChanges);
checkBufferStructure(cur.buffer(), cur);
// cur.updateFlags(Update::Force);
setCursor(cur.top(), cur.pit(), cur.pos() + 1);
charInserted();
}
void LyXText::charInserted()
{
// Here we call finishUndo for every 20 characters inserted.
// This is from my experience how emacs does it. (Lgb)
static unsigned int counter;
if (counter < 20) {
++counter;
} else {
finishUndo();
counter = 0;
}
}
// the cursor set functions have a special mechanism. When they
// realize, that you left an empty paragraph, they will delete it.
bool LyXText::cursorRightOneWord(LCursor & cur)
{
BOOST_ASSERT(this == cur.text());
LCursor old = cur;
if (old.pos() == old.lastpos() && old.pit() != old.lastpit()) {
++old.pit();
old.pos() = 0;
} else {
// Advance through word.
while (old.pos() != old.lastpos() && old.paragraph().isLetter(old.pos()))
++old.pos();
// Skip through trailing nonword stuff.
while (old.pos() != old.lastpos() && !old.paragraph().isLetter(old.pos()))
++old.pos();
}
return setCursor(cur, old.pit(), old.pos());
}
bool LyXText::cursorLeftOneWord(LCursor & cur)
{
BOOST_ASSERT(this == cur.text());
LCursor old = cur;
if (old.pos() == 0 && old.pit() != 0) {
--old.pit();
old.pos() = old.lastpos();
} else {
// Skip through initial nonword stuff.
while (old.pos() != 0 && !old.paragraph().isLetter(old.pos() - 1))
--old.pos();
// Advance through word.
while (old.pos() != 0 && old.paragraph().isLetter(old.pos() - 1))
--old.pos();
}
return setCursor(cur, old.pit(), old.pos());
}
void LyXText::selectWord(LCursor & cur, word_location loc)
{
BOOST_ASSERT(this == cur.text());
CursorSlice from = cur.top();
CursorSlice to = cur.top();
getWord(from, to, loc);
if (cur.top() != from)
setCursor(cur, from.pit(), from.pos());
if (to == from)
return;
cur.resetAnchor();
setCursor(cur, to.pit(), to.pos());
cur.setSelection();
cap::saveSelection(cur);
}
// Select the word currently under the cursor when no
// selection is currently set
bool LyXText::selectWordWhenUnderCursor(LCursor & cur, word_location loc)
{
BOOST_ASSERT(this == cur.text());
if (cur.selection())
return false;
selectWord(cur, loc);
return cur.selection();
}
void LyXText::acceptOrRejectChanges(LCursor & cur, ChangeOp op)
{
BOOST_ASSERT(this == cur.text());
if (!cur.selection())
return;
recordUndoSelection(cur, Undo::ATOMIC);
pit_type begPit = cur.selectionBegin().pit();
pit_type endPit = cur.selectionEnd().pit();
pos_type begPos = cur.selectionBegin().pos();
pos_type endPos = cur.selectionEnd().pos();
// keep selection info, because endPos becomes invalid after the first loop
bool endsBeforeEndOfPar = (endPos < pars_[endPit].size());
// first, accept/reject changes within each individual paragraph (do not consider end-of-par)
for (pit_type pit = begPit; pit <= endPit; ++pit) {
pos_type parSize = pars_[pit].size();
// ignore empty paragraphs; otherwise, an assertion will fail for
// acceptChanges(bparams, 0, 0) or rejectChanges(bparams, 0, 0)
if (parSize == 0)
continue;
// do not consider first paragraph if the cursor starts at pos size()
if (pit == begPit && begPos == parSize)
continue;
// do not consider last paragraph if the cursor ends at pos 0
if (pit == endPit && endPos == 0)
break; // last iteration anyway
pos_type left = (pit == begPit ? begPos : 0);
pos_type right = (pit == endPit ? endPos : parSize);
if (op == ACCEPT) {
pars_[pit].acceptChanges(cur.buffer().params(), left, right);
} else {
pars_[pit].rejectChanges(cur.buffer().params(), left, right);
}
}
// next, accept/reject imaginary end-of-par characters
for (pit_type pit = begPit; pit <= endPit; ++pit) {
pos_type pos = pars_[pit].size();
// skip if the selection ends before the end-of-par
if (pit == endPit && endsBeforeEndOfPar)
break; // last iteration anyway
// skip if this is not the last paragraph of the document
// note: the user should be able to accept/reject the par break of the last par!
if (pit == endPit && pit != pars_.size() - 1)
break; // last iteration anway
if (op == ACCEPT) {
if (pars_[pit].isInserted(pos)) {
pars_[pit].setChange(pos, Change(Change::UNCHANGED));
} else if (pars_[pit].isDeleted(pos)) {
if (pit == pars_.size() - 1) {
// we cannot remove a par break at the end of the last paragraph;
// instead, we mark it unchanged
pars_[pit].setChange(pos, Change(Change::UNCHANGED));
} else {
mergeParagraph(cur.buffer().params(), pars_, pit);
--endPit;
--pit;
}
}
} else {
if (pars_[pit].isDeleted(pos)) {
pars_[pit].setChange(pos, Change(Change::UNCHANGED));
} else if (pars_[pit].isInserted(pos)) {
if (pit == pars_.size() - 1) {
// we mark the par break at the end of the last paragraph unchanged
pars_[pit].setChange(pos, Change(Change::UNCHANGED));
} else {
mergeParagraph(cur.buffer().params(), pars_, pit);
--endPit;
--pit;
}
}
}
}
// finally, invoke the DEPM
deleteEmptyParagraphMechanism(begPit, endPit, cur.buffer().params().trackChanges);
//
finishUndo();
cur.clearSelection();
setCursorIntern(cur, begPit, begPos);
cur.updateFlags(Update::Force);
updateLabels(cur.buffer());
}
void LyXText::acceptChanges(BufferParams const & bparams)
{
pit_type pars_size = static_cast<pit_type>(pars_.size());
// first, accept changes within each individual paragraph
// (do not consider end-of-par)
for (pit_type pit = 0; pit < pars_size; ++pit) {
if (!pars_[pit].empty()) // prevent assertion failure
pars_[pit].acceptChanges(bparams, 0, pars_[pit].size());
}
// next, accept imaginary end-of-par characters
for (pit_type pit = 0; pit < pars_size; ++pit) {
pos_type pos = pars_[pit].size();
if (pars_[pit].isInserted(pos)) {
pars_[pit].setChange(pos, Change(Change::UNCHANGED));
} else if (pars_[pit].isDeleted(pos)) {
if (pit == pars_size - 1) {
// we cannot remove a par break at the end of the last
// paragraph; instead, we mark it unchanged
pars_[pit].setChange(pos, Change(Change::UNCHANGED));
} else {
mergeParagraph(bparams, pars_, pit);
--pit;
--pars_size;
}
}
}
// finally, invoke the DEPM
deleteEmptyParagraphMechanism(0, pars_size - 1, bparams.trackChanges);
}
void LyXText::rejectChanges(BufferParams const & bparams)
{
pit_type pars_size = static_cast<pit_type>(pars_.size());
// first, reject changes within each individual paragraph
// (do not consider end-of-par)
for (pit_type pit = 0; pit < pars_size; ++pit) {
if (!pars_[pit].empty()) // prevent assertion failure
pars_[pit].rejectChanges(bparams, 0, pars_[pit].size());
}
// next, reject imaginary end-of-par characters
for (pit_type pit = 0; pit < pars_size; ++pit) {
pos_type pos = pars_[pit].size();
if (pars_[pit].isDeleted(pos)) {
pars_[pit].setChange(pos, Change(Change::UNCHANGED));
} else if (pars_[pit].isInserted(pos)) {
if (pit == pars_size - 1) {
// we mark the par break at the end of the last
// paragraph unchanged
pars_[pit].setChange(pos, Change(Change::UNCHANGED));
} else {
mergeParagraph(bparams, pars_, pit);
--pit;
--pars_size;
}
}
}
// finally, invoke the DEPM
deleteEmptyParagraphMechanism(0, pars_size - 1, bparams.trackChanges);
}
// Delete from cursor up to the end of the current or next word.
void LyXText::deleteWordForward(LCursor & cur)
{
BOOST_ASSERT(this == cur.text());
if (cur.lastpos() == 0)
cursorRight(cur);
else {
cur.resetAnchor();
cur.selection() = true;
cursorRightOneWord(cur);
cur.setSelection();
cutSelection(cur, true, false);
checkBufferStructure(cur.buffer(), cur);
}
}
// Delete from cursor to start of current or prior word.
void LyXText::deleteWordBackward(LCursor & cur)
{
BOOST_ASSERT(this == cur.text());
if (cur.lastpos() == 0)
cursorLeft(cur);
else {
cur.resetAnchor();
cur.selection() = true;
cursorLeftOneWord(cur);
cur.setSelection();
cutSelection(cur, true, false);
checkBufferStructure(cur.buffer(), cur);
}
}
// Kill to end of line.
void LyXText::deleteLineForward(LCursor & cur)
{
BOOST_ASSERT(this == cur.text());
if (cur.lastpos() == 0) {
// Paragraph is empty, so we just go to the right
cursorRight(cur);
} else {
cur.resetAnchor();
cur.selection() = true; // to avoid deletion
cursorEnd(cur);
cur.setSelection();
// What is this test for ??? (JMarc)
if (!cur.selection())
deleteWordForward(cur);
else
cutSelection(cur, true, false);
checkBufferStructure(cur.buffer(), cur);
}
}
void LyXText::changeCase(LCursor & cur, LyXText::TextCase action)
{
BOOST_ASSERT(this == cur.text());
CursorSlice from;
CursorSlice to;
if (cur.selection()) {
from = cur.selBegin();
to = cur.selEnd();
} else {
from = cur.top();
getWord(from, to, PARTIAL_WORD);
cursorRightOneWord(cur);
}
recordUndoSelection(cur);
pos_type pos = from.pos();
int par = from.pit();
while (par != int(pars_.size()) && (pos != to.pos() || par != to.pit())) {
pit_type pit = par;
if (pos == pars_[pit].size()) {
++par;
pos = 0;
continue;
}
char_type c = pars_[pit].getChar(pos);
if (c != Paragraph::META_INSET) {
switch (action) {
case text_lowercase:
c = lowercase(c);
break;
case text_capitalization:
c = uppercase(c);
action = text_lowercase;
break;
case text_uppercase:
c = uppercase(c);
break;
}
}
// FIXME: change tracking (MG)
// sorry but we are no longer allowed to set a single character directly
// we have to rewrite this method in terms of erase&insert operations
//pars_[pit].setChar(pos, c);
++pos;
}
checkBufferStructure(cur.buffer(), cur);
}
bool LyXText::erase(LCursor & cur)
{
BOOST_ASSERT(this == cur.text());
bool needsUpdate = false;
Paragraph & par = cur.paragraph();
if (cur.pos() != cur.lastpos()) {
// this is the code for a normal delete, not pasting
// any paragraphs
recordUndo(cur, Undo::DELETE);
if(!par.eraseChar(cur.pos(), cur.buffer().params().trackChanges)) {
// the character has been logically deleted only => skip it
cur.forwardPosNoDescend();
}
checkBufferStructure(cur.buffer(), cur);
needsUpdate = true;
} else {
if (cur.pit() == cur.lastpit())
return dissolveInset(cur);
if (!par.isMergedOnEndOfParDeletion(cur.buffer().params().trackChanges)) {
par.setChange(cur.pos(), Change(Change::DELETED));
cur.forwardPos();
needsUpdate = true;
} else {
setCursorIntern(cur, cur.pit() + 1, 0);
needsUpdate = backspacePos0(cur);
}
}
if (needsUpdate) {
// Make sure the cursor is correct. Is this really needed?
// No, not really... at least not here!
cur.text()->setCursor(cur.top(), cur.pit(), cur.pos());
checkBufferStructure(cur.buffer(), cur);
}
return needsUpdate;
}
bool LyXText::backspacePos0(LCursor & cur)
{
BOOST_ASSERT(this == cur.text());
if (cur.pit() == 0)
return false;
bool needsUpdate = false;
BufferParams const & bufparams = cur.buffer().params();
LyXTextClass const & tclass = bufparams.getLyXTextClass();
ParagraphList & plist = cur.text()->paragraphs();
Paragraph const & par = cur.paragraph();
LCursor prevcur = cur;
--prevcur.pit();
prevcur.pos() = prevcur.lastpos();
Paragraph const & prevpar = prevcur.paragraph();
// is it an empty paragraph?
if (cur.lastpos() == 0
|| (cur.lastpos() == 1 && par.isSeparator(0))) {
recordUndo(cur, Undo::ATOMIC, prevcur.pit(), cur.pit());
plist.erase(boost::next(plist.begin(), cur.pit()));
needsUpdate = true;
}
// is previous par empty?
else if (prevcur.lastpos() == 0
|| (prevcur.lastpos() == 1 && prevpar.isSeparator(0))) {
recordUndo(cur, Undo::ATOMIC, prevcur.pit(), cur.pit());
plist.erase(boost::next(plist.begin(), prevcur.pit()));
needsUpdate = true;
}
// Pasting is not allowed, if the paragraphs have different
// layouts. I think it is a real bug of all other
// word processors to allow it. It confuses the user.
// Correction: Pasting is always allowed with standard-layout
else if (par.layout() == prevpar.layout()
|| par.layout() == tclass.defaultLayout()) {
recordUndo(cur, Undo::ATOMIC, prevcur.pit());
mergeParagraph(bufparams, plist, prevcur.pit());
needsUpdate = true;
}
if (needsUpdate) {
updateLabels(cur.buffer());
setCursorIntern(cur, prevcur.pit(), prevcur.pos());
}
return needsUpdate;
}
bool LyXText::backspace(LCursor & cur)
{
BOOST_ASSERT(this == cur.text());
bool needsUpdate = false;
if (cur.pos() == 0) {
if (cur.pit() == 0)
return dissolveInset(cur);
Paragraph & prev_par = pars_[cur.pit() - 1];
if (!prev_par.isMergedOnEndOfParDeletion(cur.buffer().params().trackChanges)) {
prev_par.setChange(prev_par.size(), Change(Change::DELETED));
setCursorIntern(cur, cur.pit() - 1, prev_par.size());
return true;
}
// The cursor is at the beginning of a paragraph, so
// the backspace will collapse two paragraphs into one.
needsUpdate = backspacePos0(cur);
} else {
// this is the code for a normal backspace, not pasting
// any paragraphs
recordUndo(cur, Undo::DELETE);
// We used to do cursorLeftIntern() here, but it is
// not a good idea since it triggers the auto-delete
// mechanism. So we do a cursorLeftIntern()-lite,
// without the dreaded mechanism. (JMarc)
setCursorIntern(cur, cur.pit(), cur.pos() - 1,
false, cur.boundary());
cur.paragraph().eraseChar(cur.pos(), cur.buffer().params().trackChanges);
checkBufferStructure(cur.buffer(), cur);
}
if (cur.pos() == cur.lastpos())
setCurrentFont(cur);
// A singlePar update is not enough in this case.
// cur.updateFlags(Update::Force);
setCursor(cur.top(), cur.pit(), cur.pos());
return needsUpdate;
}
bool LyXText::dissolveInset(LCursor & cur) {
BOOST_ASSERT(this == cur.text());
if (isMainText(*cur.bv().buffer()) || cur.inset().nargs() != 1)
return false;
recordUndoInset(cur);
cur.selHandle(false);
// save position
pos_type spos = cur.pos();
pit_type spit = cur.pit();
ParagraphList plist;
if (cur.lastpit() != 0 || cur.lastpos() != 0)
plist = paragraphs();
cur.popLeft();
// store cursor offset
if (spit == 0)
spos += cur.pos();
spit += cur.pit();
Buffer & b = cur.buffer();
cur.paragraph().eraseChar(cur.pos(), b.params().trackChanges);
if (!plist.empty()) {
// ERT paragraphs have the Language latex_language.
// This is invalid outside of ERT, so we need to
// change it to the buffer language.
ParagraphList::iterator it = plist.begin();
ParagraphList::iterator it_end = plist.end();
for (; it != it_end; it++) {
it->changeLanguage(b.params(), latex_language,
b.getLanguage());
}
pasteParagraphList(cur, plist, b.params().textclass,
b.errorList("Paste"));
// restore position
cur.pit() = std::min(cur.lastpit(), spit);
cur.pos() = std::min(cur.lastpos(), spos);
}
cur.clearSelection();
cur.resetAnchor();
return true;
}
// only used for inset right now. should also be used for main text
void LyXText::draw(PainterInfo & pi, int x, int y) const
{
paintTextInset(*this, pi, x, y);
}
// only used for inset right now. should also be used for main text
void LyXText::drawSelection(PainterInfo & pi, int x, int) const
{
LCursor & cur = pi.base.bv->cursor();
if (!cur.selection())
return;
if (!ptr_cmp(cur.text(), this))
return;
if (lyxerr.debugging(Debug::DEBUG)) {
lyxerr[Debug::DEBUG]
<< BOOST_CURRENT_FUNCTION
<< "draw selection at " << x
<< endl;
}
DocIterator beg = cur.selectionBegin();
DocIterator end = cur.selectionEnd();
BufferView & bv = *pi.base.bv;
Buffer const & buffer = *bv.buffer();
// the selection doesn't touch the visible screen
if (bv_funcs::status(&bv, beg) == bv_funcs::CUR_BELOW
|| bv_funcs::status(&bv, end) == bv_funcs::CUR_ABOVE)
return;
Paragraph const & par1 = pars_[beg.pit()];
Paragraph const & par2 = pars_[end.pit()];
TextMetrics const & tm = bv.textMetrics(this);
ParagraphMetrics const & pm1 = tm.parMetrics(beg.pit());
ParagraphMetrics const & pm2 = tm.parMetrics(end.pit());
bool const above = (bv_funcs::status(&bv, beg)
== bv_funcs::CUR_ABOVE);
bool const below = (bv_funcs::status(&bv, end)
== bv_funcs::CUR_BELOW);
int y1,y2,x1,x2;
if (above) {
y1 = 0;
y2 = 0;
x1 = 0;
x2 = tm.width();
} else {
Row const & row1 = pm1.getRow(beg.pos(), beg.boundary());
y1 = bv_funcs::getPos(bv, beg, beg.boundary()).y_ - row1.ascent();
y2 = y1 + row1.height();
int const startx = cursorX(bv, beg.top(), beg.boundary());
if (!isRTL(buffer, par1)) {
x1 = startx;
x2 = 0 + tm.width();
}
else {
x1 = 0;
x2 = startx;
}
}
int Y1,Y2,X1,X2;
if (below) {
Y1 = bv.workHeight();
Y2 = bv.workHeight();
X1 = 0;
X2 = tm.width();
} else {
Row const & row2 = pm2.getRow(end.pos(), end.boundary());
Y1 = bv_funcs::getPos(bv, end, end.boundary()).y_ - row2.ascent();
Y2 = Y1 + row2.height();
int const endx = cursorX(bv, end.top(), end.boundary());
if (!isRTL(buffer, par2)) {
X1 = 0;
X2 = endx;
}
else {
X1 = endx;
X2 = 0 + tm.width();
}
}
if (!above && !below && &pm1.getRow(beg.pos(), beg.boundary())
== &pm2.getRow(end.pos(), end.boundary()))
{
// paint only one rectangle
int const b( !isRTL(*bv.buffer(), par1) ? x + x1 : x + X1 );
int const w( !isRTL(*bv.buffer(), par1) ? X2 - x1 : x2 - X1 );
pi.pain.fillRectangle(b, y1, w, y2 - y1, LColor::selection);
return;
}
if (lyxerr.debugging(Debug::DEBUG)) {
lyxerr[Debug::DEBUG] << " y1: " << y1 << " y2: " << y2
<< "X1:" << X1 << " x2: " << X2 << " wid: " << tm.width()
<< endl;
}
// paint upper rectangle
pi.pain.fillRectangle(x + x1, y1, x2 - x1, y2 - y1,
LColor::selection);
// paint bottom rectangle
pi.pain.fillRectangle(x + X1, Y1, X2 - X1, Y2 - Y1,
LColor::selection);
// paint center rectangle
pi.pain.fillRectangle(x, y2, tm.width(),
Y1 - y2, LColor::selection);
}
bool LyXText::isLastRow(pit_type pit, Row const & row) const
{
return row.endpos() >= pars_[pit].size()
&& pit + 1 == pit_type(paragraphs().size());
}
bool LyXText::isFirstRow(pit_type pit, Row const & row) const
{
return row.pos() == 0 && pit == 0;
}
void LyXText::getWord(CursorSlice & from, CursorSlice & to,
word_location const loc)
{
Paragraph const & from_par = pars_[from.pit()];
switch (loc) {
case WHOLE_WORD_STRICT:
if (from.pos() == 0 || from.pos() == from_par.size()
|| !from_par.isLetter(from.pos())
|| !from_par.isLetter(from.pos() - 1)) {
to = from;
return;
}
// no break here, we go to the next
case WHOLE_WORD:
// If we are already at the beginning of a word, do nothing
if (!from.pos() || !from_par.isLetter(from.pos() - 1))
break;
// no break here, we go to the next
case PREVIOUS_WORD:
// always move the cursor to the beginning of previous word
while (from.pos() && from_par.isLetter(from.pos() - 1))
--from.pos();
break;
case NEXT_WORD:
lyxerr << "LyXText::getWord: NEXT_WORD not implemented yet"
<< endl;
break;
case PARTIAL_WORD:
// no need to move the 'from' cursor
break;
}
to = from;
Paragraph & to_par = pars_[to.pit()];
while (to.pos() < to_par.size() && to_par.isLetter(to.pos()))
++to.pos();
}
void LyXText::write(Buffer const & buf, std::ostream & os) const
{
ParagraphList::const_iterator pit = paragraphs().begin();
ParagraphList::const_iterator end = paragraphs().end();
depth_type dth = 0;
for (; pit != end; ++pit)
pit->write(buf, os, buf.params(), dth);
}
bool LyXText::read(Buffer const & buf, LyXLex & lex, ErrorList & errorList)
{
depth_type depth = 0;
while (lex.isOK()) {
lex.nextToken();
string const token = lex.getString();
if (token.empty())
continue;
if (token == "\\end_inset")
break;
if (token == "\\end_body")
continue;
if (token == "\\begin_body")
continue;
if (token == "\\end_document")
return false;
if (token == "\\begin_layout") {
lex.pushToken(token);
Paragraph par;
par.params().depth(depth);
par.setFont(0, LyXFont(LyXFont::ALL_INHERIT, buf.params().language));
pars_.push_back(par);
// FIXME: goddamn InsetTabular makes us pass a Buffer
// not BufferParams
lyx::readParagraph(buf, pars_.back(), lex, errorList);
} else if (token == "\\begin_deeper") {
++depth;
} else if (token == "\\end_deeper") {
if (!depth) {
lex.printError("\\end_deeper: " "depth is already null");
} else {
--depth;
}
} else {
lyxerr << "Handling unknown body token: `"
<< token << '\'' << endl;
}
}
return true;
}
int LyXText::cursorX(BufferView const & bv, CursorSlice const & sl,
bool boundary) const
{
TextMetrics const & tm = bv.textMetrics(sl.text());
pit_type const pit = sl.pit();
Paragraph const & par = pars_[pit];
ParagraphMetrics const & pm = tm.parMetrics(pit);
if (pm.rows().empty())
return 0;
pos_type ppos = sl.pos();
// Correct position in front of big insets
bool const boundary_correction = ppos != 0 && boundary;
if (boundary_correction)
--ppos;
Row const & row = pm.getRow(sl.pos(), boundary);
pos_type cursor_vpos = 0;
Buffer const & buffer = *bv.buffer();
RowMetrics const m = tm.computeRowMetrics(pit, row);
double x = m.x;
pos_type const row_pos = row.pos();
pos_type const end = row.endpos();
if (end <= row_pos)
cursor_vpos = row_pos;
else if (ppos >= end)
cursor_vpos = isRTL(buffer, par) ? row_pos : end;
else if (ppos > row_pos && ppos >= end)
// Place cursor after char at (logical) position pos - 1
cursor_vpos = (bidi.level(ppos - 1) % 2 == 0)
? bidi.log2vis(ppos - 1) + 1 : bidi.log2vis(ppos - 1);
else
// Place cursor before char at (logical) position ppos
cursor_vpos = (bidi.level(ppos) % 2 == 0)
? bidi.log2vis(ppos) : bidi.log2vis(ppos) + 1;
pos_type body_pos = par.beginOfBody();
if (body_pos > 0 &&
(body_pos > end || !par.isLineSeparator(body_pos - 1)))
body_pos = 0;
// Use font span to speed things up, see below
FontSpan font_span;
LyXFont font;
FontMetrics const & labelfm = theFontMetrics(
getLabelFont(buffer, par));
for (pos_type vpos = row_pos; vpos < cursor_vpos; ++vpos) {
pos_type pos = bidi.vis2log(vpos);
if (body_pos > 0 && pos == body_pos - 1) {
// FIXME UNICODE
docstring const lsep = from_utf8(par.layout()->labelsep);
x += m.label_hfill + labelfm.width(lsep);
if (par.isLineSeparator(body_pos - 1))
x -= singleWidth(buffer, par, body_pos - 1);
}
// Use font span to speed things up, see above
if (pos < font_span.first || pos > font_span.last) {
font_span = par.fontSpan(pos);
font = getFont(buffer, par, pos);
}
x += singleWidth(par, pos, par.getChar(pos), font);
if (par.hfillExpansion(row, pos))
x += (pos >= body_pos) ? m.hfill : m.label_hfill;
else if (par.isSeparator(pos) && pos >= body_pos)
x += m.separator;
}
// see correction above
if (boundary_correction)
if (getFont(buffer, par, ppos).isVisibleRightToLeft())
x -= singleWidth(buffer, par, ppos);
else
x += singleWidth(buffer, par, ppos);
// Make sure inside an inset we always count from the left
// edge (bidi!) -- MV
if (sl.pos() < par.size()) {
font = getFont(buffer, par, sl.pos());
if (!boundary && font.isVisibleRightToLeft()
&& par.isInset(sl.pos()))
x -= par.getInset(sl.pos())->width();
}
return int(x);
}
int LyXText::cursorY(BufferView const & bv, CursorSlice const & sl, bool boundary) const
{
//lyxerr << "LyXText::cursorY: boundary: " << boundary << std::endl;
ParagraphMetrics const & pm = bv.parMetrics(this, sl.pit());
if (pm.rows().empty())
return 0;
int h = 0;
h -= bv.parMetrics(this, 0).rows()[0].ascent();
for (pit_type pit = 0; pit < sl.pit(); ++pit) {
h += bv.parMetrics(this, pit).height();
}
int pos = sl.pos();
if (pos && boundary)
--pos;
size_t const rend = pm.pos2row(pos);
for (size_t rit = 0; rit != rend; ++rit)
h += pm.rows()[rit].height();
h += pm.rows()[rend].ascent();
return h;
}
// Returns the current font and depth as a message.
docstring LyXText::currentState(LCursor & cur)
{
BOOST_ASSERT(this == cur.text());
Buffer & buf = cur.buffer();
Paragraph const & par = cur.paragraph();
odocstringstream os;
if (buf.params().trackChanges)
os << _("[Change Tracking] ");
Change change = par.lookupChange(cur.pos());
if (change.type != Change::UNCHANGED) {
Author const & a = buf.params().authors().get(change.author);
os << _("Change: ") << a.name();
if (!a.email().empty())
os << " (" << a.email() << ")";
// FIXME ctime is english, we should translate that
os << _(" at ") << ctime(&change.changetime);
os << " : ";
}
// I think we should only show changes from the default
// font. (Asger)
// No, from the document font (MV)
LyXFont font = real_current_font;
font.reduce(buf.params().getFont());
os << bformat(_("Font: %1$s"), font.stateText(&buf.params()));
// The paragraph depth
int depth = cur.paragraph().getDepth();
if (depth > 0)
os << bformat(_(", Depth: %1$d"), depth);
// The paragraph spacing, but only if different from
// buffer spacing.
Spacing const & spacing = par.params().spacing();
if (!spacing.isDefault()) {
os << _(", Spacing: ");
switch (spacing.getSpace()) {
case Spacing::Single:
os << _("Single");
break;
case Spacing::Onehalf:
os << _("OneHalf");
break;
case Spacing::Double:
os << _("Double");
break;
case Spacing::Other:
os << _("Other (") << from_ascii(spacing.getValueAsString()) << ')';
break;
case Spacing::Default:
// should never happen, do nothing
break;
}
}
#ifdef DEVEL_VERSION
os << _(", Inset: ") << &cur.inset();
os << _(", Paragraph: ") << cur.pit();
os << _(", Id: ") << par.id();
os << _(", Position: ") << cur.pos();
// FIXME: Why is the check for par.size() needed?
// We are called with cur.pos() == par.size() quite often.
if (!par.empty() && cur.pos() < par.size()) {
// Force output of code point, not character
size_t const c = par.getChar(cur.pos());
os << _(", Char: 0x") << std::hex << c;
}
os << _(", Boundary: ") << cur.boundary();
// Row & row = cur.textRow();
// os << bformat(_(", Row b:%1$d e:%2$d"), row.pos(), row.endpos());
#endif
return os.str();
}
docstring LyXText::getPossibleLabel(LCursor & cur) const
{
pit_type pit = cur.pit();
LyXLayout_ptr layout = pars_[pit].layout();
if (layout->latextype == LATEX_PARAGRAPH && pit != 0) {
LyXLayout_ptr const & layout2 = pars_[pit - 1].layout();
if (layout2->latextype != LATEX_PARAGRAPH) {
--pit;
layout = layout2;
}
}
docstring name = from_ascii(layout->latexname());
// for captions, we want the abbreviation of the float type
if (layout->labeltype == LABEL_SENSITIVE) {
// Search for the first float or wrap inset in the iterator
for (int i = cur.depth(); --i >= 0; ) {
InsetBase * const in = &cur[i].inset();
if (in->lyxCode() == InsetBase::FLOAT_CODE
|| in->lyxCode() == InsetBase::WRAP_CODE) {
name = in->getInsetName();
break;
}
}
}
docstring text = name.substr(0, 3);
if (name == "theorem")
text = from_ascii("thm"); // Create a correct prefix for prettyref
text += ':';
if (layout->latextype == LATEX_PARAGRAPH || lyxrc.label_init_length < 0)
text.erase();
docstring par_text = pars_[pit].asString(cur.buffer(), false);
for (int i = 0; i < lyxrc.label_init_length; ++i) {
if (par_text.empty())
break;
docstring head;
par_text = split(par_text, head, ' ');
// Is it legal to use spaces in labels ?
if (i > 0)
text += '-';
text += head;
}
return text;
}
void LyXText::setCursorFromCoordinates(LCursor & cur, int const x, int const y)
{
BOOST_ASSERT(this == cur.text());
pit_type pit = getPitNearY(cur.bv(), y);
TextMetrics const & tm = cur.bv().textMetrics(this);
ParagraphMetrics const & pm = tm.parMetrics(pit);
int yy = cur.bv().coordCache().get(this, pit).y_ - pm.ascent();
lyxerr[Debug::DEBUG]
<< BOOST_CURRENT_FUNCTION
<< ": x: " << x
<< " y: " << y
<< " pit: " << pit
<< " yy: " << yy << endl;
int r = 0;
BOOST_ASSERT(pm.rows().size());
for (; r < int(pm.rows().size()) - 1; ++r) {
Row const & row = pm.rows()[r];
if (int(yy + row.height()) > y)
break;
yy += row.height();
}
Row const & row = pm.rows()[r];
lyxerr[Debug::DEBUG]
<< BOOST_CURRENT_FUNCTION
<< ": row " << r
<< " from pos: " << row.pos()
<< endl;
bool bound = false;
int xx = x;
pos_type const pos = row.pos()
+ tm.getColumnNearX(pit, row, xx, bound);
lyxerr[Debug::DEBUG]
<< BOOST_CURRENT_FUNCTION
<< ": setting cursor pit: " << pit
<< " pos: " << pos
<< endl;
setCursor(cur, pit, pos, true, bound);
// remember new position.
cur.setTargetX();
}
void LyXText::charsTranspose(LCursor & cur)
{
BOOST_ASSERT(this == cur.text());
pos_type pos = cur.pos();
// If cursor is at beginning or end of paragraph, do nothing.
if (pos == cur.lastpos() || pos == 0)
return;
Paragraph & par = cur.paragraph();
// Get the positions of the characters to be transposed.
pos_type pos1 = pos - 1;
pos_type pos2 = pos;
// In change tracking mode, ignore deleted characters.
while (pos2 < cur.lastpos() && par.isDeleted(pos2))
++pos2;
if (pos2 == cur.lastpos())
return;
while (pos1 >= 0 && par.isDeleted(pos1))
--pos1;
if (pos1 < 0)
return;
// Don't do anything if one of the "characters" is not regular text.
if (par.isInset(pos1) || par.isInset(pos2))
return;
// Store the characters to be transposed (including font information).
char_type char1 = par.getChar(pos1);
LyXFont const font1 =
par.getFontSettings(cur.buffer().params(), pos1);
char_type char2 = par.getChar(pos2);
LyXFont const font2 =
par.getFontSettings(cur.buffer().params(), pos2);
// And finally, we are ready to perform the transposition.
// Track the changes if Change Tracking is enabled.
bool const trackChanges = cur.buffer().params().trackChanges;
recordUndo(cur);
par.eraseChar(pos2, trackChanges);
par.eraseChar(pos1, trackChanges);
par.insertChar(pos1, char2, font2, trackChanges);
par.insertChar(pos2, char1, font1, trackChanges);
checkBufferStructure(cur.buffer(), cur);
// After the transposition, move cursor to after the transposition.
setCursor(cur, cur.pit(), pos2);
cur.forwardPos();
}
} // namespace lyx