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b27bb5cb53
lyx_mirror/src/text.C
Lars Gullik Bjønnes b27bb5cb53 Change (and fix) the bullets in itemize to be more unicode friendly. 
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@15416 a592a061-630c-0410-9148-cb99ea01b6c8
2006-10-20 19:26:23 +00:00

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/**
* \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 "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 "lyxrow_funcs.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/insetlatexaccent.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 lyx::docstring;
using lyx::char_type;
using lyx::pit_type;
using lyx::pos_type;
using lyx::word_location;
using lyx::support::bformat;
using lyx::support::contains;
using lyx::support::lowercase;
using lyx::support::split;
using lyx::support::uppercase;
using lyx::cap::cutSelection;
using lyx::cap::pasteParagraphList;
using lyx::frontend::FontMetrics;
using std::auto_ptr;
using std::advance;
using std::distance;
using std::max;
using std::min;
using std::endl;
using std::string;
namespace {
int numberOfSeparators(Paragraph const & par, Row const & row)
{
pos_type const first = max(row.pos(), par.beginOfBody());
pos_type const last = row.endpos() - 1;
int n = 0;
for (pos_type p = first; p < last; ++p) {
if (par.isSeparator(p))
++n;
}
return n;
}
int numberOfLabelHfills(Paragraph const & par, Row const & row)
{
pos_type last = row.endpos() - 1;
pos_type first = row.pos();
// hfill *DO* count at the beginning of paragraphs!
if (first) {
while (first < last && par.isHfill(first))
++first;
}
last = min(last, par.beginOfBody());
int n = 0;
for (pos_type p = first; p < last; ++p) {
if (par.isHfill(p))
++n;
}
return n;
}
int numberOfHfills(Paragraph const & par, Row const & row)
{
pos_type const last = row.endpos();
pos_type first = row.pos();
// hfill *DO* count at the beginning of paragraphs!
if (first) {
while (first < last && par.isHfill(first))
++first;
}
first = max(first, par.beginOfBody());
int n = 0;
for (pos_type p = first; p < last; ++p) {
if (par.isHfill(p))
++n;
}
return n;
}
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
lyx::docstring dstr = lex.getDocString();
lyx::docstring::const_iterator cit = dstr.begin();
lyx::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"),
lyx::from_utf8(layoutname), lyx::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 = lyx::from_utf8(lex.getString());
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 == "\\i") {
auto_ptr<InsetBase> inset(new InsetLatexAccent);
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 == "\\change_unchanged") {
// Hack ! Needed for empty paragraphs :/
// FIXME: change tracking (MG)
// set empty 'par' to INSERTED???
change = Change(Change::UNCHANGED);
} else if (token == "\\change_inserted") {
lex.eatLine();
std::istringstream is(lex.getString());
unsigned int aid;
lyx::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$d\n"), aid),
par.id(), 0, par.size()));
change = Change(Change::UNCHANGED);
} else
change = Change(Change::INSERTED, bp.author_map[aid], ct);
} else if (token == "\\change_deleted") {
lex.eatLine();
std::istringstream is(lex.getString());
unsigned int aid;
lyx::time_type ct;
is >> aid >> ct;
if (aid >= bp.author_map.size()) {
errorList.push_back(ErrorItem(_("Change tracking error"),
bformat(_("Unknown author index for deletion: %1$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"), lyx::from_utf8(token),
lyx::from_utf8(lex.getString())),
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
BufferView * LyXText::bv() const
{
BOOST_ASSERT(bv_owner != 0);
return bv_owner;
}
double LyXText::spacing(Paragraph const & par) const
{
if (par.params().spacing().isDefault())
return bv()->buffer()->params().spacing().getValue();
return par.params().spacing().getValue();
}
int LyXText::width() const
{
return dim_.wid;
}
int LyXText::height() const
{
return dim_.height();
}
int LyXText::singleWidth(Paragraph const & par, pos_type pos) const
{
return singleWidth(par, pos, par.getChar(pos), getFont(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(pit_type pit) const
{
BOOST_ASSERT(pit >= 0);
BOOST_ASSERT(pit < int(pars_.size()));
return leftMargin(pit, pars_[pit].size());
}
int LyXText::leftMargin(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;
BufferParams const & params = bv()->buffer()->params();
LyXTextClass const & tclass = params.getLyXTextClass();
LyXLayout_ptr const & layout = par.layout();
string parindent = layout->parindent;
int l_margin = 0;
if (isMainText())
l_margin += changebarMargin();
// FIXME UNICODE
docstring leftm = lyx::from_utf8(tclass.leftmargin());
l_margin += theFontMetrics(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(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(par);
FontMetrics const & labelfont_metrics = theFontMetrics(labelfont);
switch (layout->margintype) {
case MARGIN_DYNAMIC:
if (!layout->leftmargin.empty()) {
// FIXME UNICODE
docstring leftm = lyx::from_utf8(layout->leftmargin);
l_margin += theFontMetrics(params.getFont()).signedWidth(leftm);
}
if (!par.getLabelstring().empty()) {
// FIXME UNICODE
docstring labin = lyx::from_utf8(layout->labelindent);
l_margin += labelfont_metrics.signedWidth(labin);
docstring labstr = par.getLabelstring();
l_margin += labelfont_metrics.width(labstr);
docstring labsep = lyx::from_utf8(layout->labelsep);
l_margin += labelfont_metrics.width(labsep);
}
break;
case MARGIN_MANUAL: {
// FIXME UNICODE
docstring labin = lyx::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 = lyx::from_utf8(layout->labelsep);
l_margin += labelfont_metrics.width(labsep);
}
}
break;
}
case MARGIN_STATIC: {
// FIXME UNICODE
docstring leftm = lyx::from_utf8(layout->leftmargin);
l_margin += theFontMetrics(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(
lyx::from_utf8(layout->leftmargin));
} else {
// FIXME UNICODE
l_margin += labelfont_metrics.signedWidth(
lyx::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(lyx::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(lyx::from_utf8(layout->labelindent));
l_margin += labelfont_metrics.width(lyx::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 = maxwidth_;
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 += maxwidth_ / 2;
break;
}
}
if (!par.params().leftIndent().zero())
l_margin += par.params().leftIndent().inPixels(maxwidth_);
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())
// display style insets are always centered, omit indentation
&& !(!par.empty()
&& par.isInset(pos)
&& par.getInset(pos)->display())
&& (par.layout() != tclass.defaultLayout()
|| bv()->buffer()->params().paragraph_separation ==
BufferParams::PARSEP_INDENT))
{
docstring din = lyx::from_utf8(parindent);
l_margin += theFontMetrics(params.getFont()).signedWidth(din);
}
return l_margin;
}
int LyXText::rightMargin(Paragraph const & par) const
{
// FIXME: the correct way is to only call rightMargin() only
// within the main LyXText. The following test is thus bogus.
LyXText const & text = bv()->buffer()->text();
// We do not want rightmargins on inner texts.
if (&text != this)
return 0;
BufferParams const & params = bv()->buffer()->params();
LyXTextClass const & tclass = params.getLyXTextClass();
docstring trmarg = lyx::from_utf8(tclass.rightmargin());
docstring lrmarg = lyx::from_utf8(par.layout()->rightmargin);
FontMetrics const & fm = theFontMetrics(params.getFont());
int const r_margin =
::rightMargin()
+ fm.signedWidth(trmarg)
+ fm.signedWidth(lrmarg)
* 4 / (par.getDepth() + 4);
return r_margin;
}
int LyXText::labelEnd(pit_type const pit) const
{
// labelEnd is only needed if the layout fills a flushleft label.
if (pars_[pit].layout()->margintype != MARGIN_MANUAL)
return 0;
// return the beginning of the body
return leftMargin(pit);
}
namespace {
// this needs special handling - only newlines count as a break point
pos_type addressBreakPoint(pos_type i, Paragraph const & par)
{
pos_type const end = par.size();
for (; i < end; ++i)
if (par.isNewline(i))
return i + 1;
return end;
}
};
void LyXText::rowBreakPoint(pit_type const pit, Row & row) const
{
Paragraph const & par = pars_[pit];
pos_type const end = par.size();
pos_type const pos = row.pos();
if (pos == end) {
row.endpos(end);
return;
}
// maximum pixel width of a row
int width = maxwidth_ - rightMargin(par); // - leftMargin(pit, row);
if (width < 0) {
row.endpos(end);
return;
}
LyXLayout_ptr const & layout = par.layout();
if (layout->margintype == MARGIN_RIGHT_ADDRESS_BOX) {
row.endpos(addressBreakPoint(pos, par));
return;
}
pos_type const body_pos = par.beginOfBody();
// Now we iterate through until we reach the right margin
// or the end of the par, then choose the possible break
// nearest that.
int const left = leftMargin(pit, pos);
int x = left;
// pixel width since last breakpoint
int chunkwidth = 0;
FontIterator fi = FontIterator(*this, par, pos);
pos_type point = end;
pos_type i = pos;
FontMetrics const & fm = theFontMetrics(getLabelFont(par));
for ( ; i < end; ++i, ++fi) {
char_type const c = par.getChar(i);
int thiswidth = singleWidth(par, i, c, *fi);
// add the auto-hfill from label end to the body
if (body_pos && i == body_pos) {
docstring lsep = lyx::from_utf8(layout->labelsep);
int add = fm.width(lsep);
if (par.isLineSeparator(i - 1))
add -= singleWidth(par, i - 1);
add = std::max(add, labelEnd(pit) - x);
thiswidth += add;
}
x += thiswidth;
chunkwidth += thiswidth;
// break before a character that will fall off
// the right of the row
if (x >= width) {
// if no break before, break here
if (point == end || chunkwidth >= width - left) {
if (i > pos)
point = i;
else
point = i + 1;
}
// exit on last registered breakpoint:
break;
}
if (par.isNewline(i)) {
point = i + 1;
break;
}
// Break before...
if (i + 1 < end) {
if (par.isInset(i + 1) && par.getInset(i + 1)->display()) {
point = i + 1;
break;
}
// ...and after.
if (par.isInset(i) && par.getInset(i)->display()) {
point = i + 1;
break;
}
}
if (!par.isInset(i) || par.getInset(i)->isChar()) {
// some insets are line separators too
if (par.isLineSeparator(i)) {
// register breakpoint:
point = i + 1;
chunkwidth = 0;
}
}
}
// maybe found one, but the par is short enough.
if (i == end && x < width)
point = end;
// manual labels cannot be broken in LaTeX. But we
// want to make our on-screen rendering of footnotes
// etc. still break
if (body_pos && point < body_pos)
point = body_pos;
row.endpos(point);
}
void LyXText::setRowWidth(pit_type const pit, Row & row) const
{
// get the pure distance
pos_type const end = row.endpos();
Paragraph const & par = pars_[pit];
docstring const labelsep = lyx::from_utf8(par.layout()->labelsep);
int w = leftMargin(pit, row.pos());
pos_type const body_pos = par.beginOfBody();
pos_type i = row.pos();
FontMetrics const & fm = theFontMetrics(getLabelFont(par));
if (i < end) {
FontIterator fi = FontIterator(*this, par, i);
for ( ; i < end; ++i, ++fi) {
if (body_pos > 0 && i == body_pos) {
w += fm.width(labelsep);
if (par.isLineSeparator(i - 1))
w -= singleWidth(par, i - 1);
w = max(w, labelEnd(pit));
}
char_type const c = par.getChar(i);
w += singleWidth(par, i, c, *fi);
}
}
if (body_pos > 0 && body_pos >= end) {
w += fm.width(labelsep);
if (end > 0 && par.isLineSeparator(end - 1))
w -= singleWidth(par, end - 1);
w = max(w, labelEnd(pit));
}
row.width(w + rightMargin(par));
}
// returns the minimum space a manual label needs on the screen in pixel
int LyXText::labelFill(Paragraph const & par, Row const & row) const
{
pos_type last = par.beginOfBody();
BOOST_ASSERT(last > 0);
// -1 because a label ends with a space that is in the label
--last;
// a separator at this end does not count
if (par.isLineSeparator(last))
--last;
int w = 0;
for (pos_type i = row.pos(); i <= last; ++i)
w += singleWidth(par, i);
docstring const & label = par.params().labelWidthString();
if (label.empty())
return 0;
FontMetrics const & fm = theFontMetrics(getLabelFont(par));
return max(0, fm.width(label) - w);
}
LColor_color LyXText::backgroundColor() const
{
return LColor_color(LColor::color(background_color_));
}
void LyXText::setHeightOfRow(pit_type const pit, Row & row)
{
Paragraph const & par = pars_[pit];
// get the maximum ascent and the maximum descent
double layoutasc = 0;
double layoutdesc = 0;
double const dh = defaultRowHeight();
// ok, let us initialize the maxasc and maxdesc value.
// Only the fontsize count. The other properties
// are taken from the layoutfont. Nicer on the screen :)
LyXLayout_ptr const & layout = par.layout();
// as max get the first character of this row then it can
// increase but not decrease the height. Just some point to
// start with so we don't have to do the assignment below too
// often.
LyXFont font = getFont(par, row.pos());
LyXFont::FONT_SIZE const tmpsize = font.size();
font = getLayoutFont(pit);
LyXFont::FONT_SIZE const size = font.size();
font.setSize(tmpsize);
LyXFont labelfont = getLabelFont(par);
FontMetrics const & labelfont_metrics = theFontMetrics(labelfont);
FontMetrics const & fontmetrics = theFontMetrics(font);
// these are minimum values
double const spacing_val = layout->spacing.getValue() * spacing(par);
//lyxerr << "spacing_val = " << spacing_val << endl;
int maxasc = int(fontmetrics.maxAscent() * spacing_val);
int maxdesc = int(fontmetrics.maxDescent() * spacing_val);
// insets may be taller
InsetList::const_iterator ii = par.insetlist.begin();
InsetList::const_iterator iend = par.insetlist.end();
for ( ; ii != iend; ++ii) {
if (ii->pos >= row.pos() && ii->pos < row.endpos()) {
maxasc = max(maxasc, ii->inset->ascent());
maxdesc = max(maxdesc, ii->inset->descent());
}
}
// Check if any custom fonts are larger (Asger)
// This is not completely correct, but we can live with the small,
// cosmetic error for now.
int labeladdon = 0;
pos_type const pos_end = row.endpos();
LyXFont::FONT_SIZE maxsize =
par.highestFontInRange(row.pos(), pos_end, size);
if (maxsize > font.size()) {
font.setSize(maxsize);
maxasc = max(maxasc, fontmetrics.maxAscent());
maxdesc = max(maxdesc, fontmetrics.maxDescent());
}
// This is nicer with box insets:
++maxasc;
++maxdesc;
row.ascent(maxasc);
// is it a top line?
if (row.pos() == 0) {
BufferParams const & bufparams = bv()->buffer()->params();
// some parksips VERY EASY IMPLEMENTATION
if (bv()->buffer()->params().paragraph_separation
== BufferParams::PARSEP_SKIP
&& pit != 0
&& ((layout->isParagraph() && par.getDepth() == 0)
|| (pars_[pit - 1].layout()->isParagraph()
&& pars_[pit - 1].getDepth() == 0)))
{
maxasc += bufparams.getDefSkip().inPixels(*bv());
}
if (par.params().startOfAppendix())
maxasc += int(3 * dh);
// This is special code for the chapter, since the label of this
// layout is printed in an extra row
if (layout->counter == "chapter"
&& !par.params().labelString().empty()) {
labeladdon = int(labelfont_metrics.maxHeight()
* layout->spacing.getValue()
* spacing(par));
}
// special code for the top label
if ((layout->labeltype == LABEL_TOP_ENVIRONMENT
|| layout->labeltype == LABEL_BIBLIO
|| layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)
&& isFirstInSequence(pit, paragraphs())
&& !par.getLabelstring().empty())
{
labeladdon = int(
labelfont_metrics.maxHeight()
* layout->spacing.getValue()
* spacing(par)
+ (layout->topsep + layout->labelbottomsep) * dh);
}
// Add the layout spaces, for example before and after
// a section, or between the items of a itemize or enumerate
// environment.
pit_type prev = depthHook(pit, pars_, par.getDepth());
if (prev != pit
&& pars_[prev].layout() == layout
&& pars_[prev].getDepth() == par.getDepth()
&& pars_[prev].getLabelWidthString() == par.getLabelWidthString())
{
layoutasc = layout->itemsep * dh;
} else if (pit != 0 || row.pos() != 0) {
if (layout->topsep > 0)
layoutasc = layout->topsep * dh;
}
prev = outerHook(pit, pars_);
if (prev != pit_type(pars_.size())) {
maxasc += int(pars_[prev].layout()->parsep * dh);
} else if (pit != 0) {
if (pars_[pit - 1].getDepth() != 0 ||
pars_[pit - 1].layout() == layout) {
maxasc += int(layout->parsep * dh);
}
}
}
// is it a bottom line?
if (row.endpos() >= par.size()) {
// add the layout spaces, for example before and after
// a section, or between the items of a itemize or enumerate
// environment
pit_type nextpit = pit + 1;
if (nextpit != pit_type(pars_.size())) {
pit_type cpit = pit;
double usual = 0;
double unusual = 0;
if (pars_[cpit].getDepth() > pars_[nextpit].getDepth()) {
usual = pars_[cpit].layout()->bottomsep * dh;
cpit = depthHook(cpit, paragraphs(), pars_[nextpit].getDepth());
if (pars_[cpit].layout() != pars_[nextpit].layout()
|| pars_[nextpit].getLabelWidthString() != pars_[cpit].getLabelWidthString())
{
unusual = pars_[cpit].layout()->bottomsep * dh;
}
layoutdesc = max(unusual, usual);
} else if (pars_[cpit].getDepth() == pars_[nextpit].getDepth()) {
if (pars_[cpit].layout() != pars_[nextpit].layout()
|| pars_[nextpit].getLabelWidthString() != pars_[cpit].getLabelWidthString())
layoutdesc = int(pars_[cpit].layout()->bottomsep * dh);
}
}
}
// incalculate the layout spaces
maxasc += int(layoutasc * 2 / (2 + pars_[pit].getDepth()));
maxdesc += int(layoutdesc * 2 / (2 + pars_[pit].getDepth()));
// FIXME: the correct way is to do the following is to move the
// following code in another method specially tailored for the
// main LyXText. The following test is thus bogus.
LyXText const & text = bv_owner->buffer()->text();
// Top and bottom margin of the document (only at top-level)
if (&text == this) {
if (pit == 0 && row.pos() == 0)
maxasc += 20;
if (pit + 1 == pit_type(pars_.size()) &&
row.endpos() == par.size())
maxdesc += 20;
}
row.ascent(maxasc + labeladdon);
row.descent(maxdesc);
}
namespace {
}
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.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()))
// FIXME: change tracking (MG)
cpar.erase(cur.pos(), cur.buffer().params().trackChanges);
// How 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();
::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))
// FIXME: change tracking (MG)
pars_[next_par].erase(0, cur.buffer().params().trackChanges);
ParIterator current_it(cur);
ParIterator last_it(cur);
++last_it;
++last_it;
updateLabels(cur.buffer(), current_it, last_it);
// Mark "carriage return" as inserted if change tracking:
if (cur.buffer().params().trackChanges) {
// FIXME: Change tracking (MG)
cur.paragraph().setChange(cur.paragraph().size(),
Change(Change::INSERTED));
}
// 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, cur.pit() + 1, 0);
else
setCursor(cur, 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);
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 = lyx::from_ascii("+-/*");
static docstring const number_unary_operators = lyx::from_ascii("+-");
static docstring const number_seperators = lyx::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(par, cur.pos()).number() == LyXFont::ON &&
getFont(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(pit, cur.pos() - 1, current_font);
} else if (contains(number_seperators, c)
&& cur.pos() >= 2
&& getFont(par, cur.pos() - 2).number() == LyXFont::ON) {
setCharFont(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))
// FIXME: change tracking (MG)
&& par.lookupChange(cur.pos() - 1) != Change(Change::DELETED)) {
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;
}
}
// FIXME: change tracking (MG)
par.insertChar(cur.pos(), c, current_font, Change(Change::INSERTED));
setCursor(cur, cur.pit(), cur.pos() + 1, false, cur.boundary());
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;
}
}
RowMetrics
LyXText::computeRowMetrics(pit_type const pit, Row const & row) const
{
RowMetrics result;
Paragraph const & par = pars_[pit];
double w = dim_.wid - row.width();
bool const is_rtl = isRTL(par);
if (is_rtl)
result.x = rightMargin(par);
else
result.x = leftMargin(pit, row.pos());
// is there a manual margin with a manual label
LyXLayout_ptr const & layout = par.layout();
if (layout->margintype == MARGIN_MANUAL
&& layout->labeltype == LABEL_MANUAL) {
/// We might have real hfills in the label part
int nlh = numberOfLabelHfills(par, row);
// A manual label par (e.g. List) has an auto-hfill
// between the label text and the body of the
// paragraph too.
// But we don't want to do this auto hfill if the par
// is empty.
if (!par.empty())
++nlh;
if (nlh && !par.getLabelWidthString().empty())
result.label_hfill = labelFill(par, row) / double(nlh);
}
// are there any hfills in the row?
int const nh = numberOfHfills(par, row);
if (nh) {
if (w > 0)
result.hfill = w / nh;
// we don't have to look at the alignment if it is ALIGN_LEFT and
// if the row is already larger then the permitted width as then
// we force the LEFT_ALIGN'edness!
} else if (int(row.width()) < maxwidth_) {
// is it block, flushleft or flushright?
// set x how you need it
int align;
if (par.params().align() == LYX_ALIGN_LAYOUT)
align = layout->align;
else
align = par.params().align();
// Display-style insets should always be on a centred row
// The test on par.size() is to catch zero-size pars, which
// would trigger the assert in Paragraph::getInset().
//inset = par.size() ? par.getInset(row.pos()) : 0;
if (!par.empty()
&& par.isInset(row.pos())
&& par.getInset(row.pos())->display())
{
align = LYX_ALIGN_CENTER;
}
switch (align) {
case LYX_ALIGN_BLOCK: {
int const ns = numberOfSeparators(par, row);
bool disp_inset = false;
if (row.endpos() < par.size()) {
InsetBase const * in = par.getInset(row.endpos());
if (in)
disp_inset = in->display();
}
// If we have separators, this is not the last row of a
// par, does not end in newline, and is not row above a
// display inset... then stretch it
if (ns
&& row.endpos() < par.size()
&& !par.isNewline(row.endpos() - 1)
&& !disp_inset
) {
result.separator = w / ns;
} else if (is_rtl) {
result.x += w;
}
break;
}
case LYX_ALIGN_RIGHT:
result.x += w;
break;
case LYX_ALIGN_CENTER:
result.x += w / 2;
break;
}
}
bidi.computeTables(par, *bv()->buffer(), row);
if (is_rtl) {
pos_type body_pos = par.beginOfBody();
pos_type end = row.endpos();
if (body_pos > 0
&& (body_pos > end || !par.isLineSeparator(body_pos - 1)))
{
docstring const lsep = lyx::from_utf8(layout->labelsep);
result.x += theFontMetrics(getLabelFont(par)).width(lsep);
if (body_pos <= end)
result.x += result.label_hfill;
}
}
return result;
}
// 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();
}
// 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::acceptChange(LCursor & cur)
{
BOOST_ASSERT(this == cur.text());
if (!cur.selection() && cur.lastpos() != 0)
return;
recordUndoSelection(cur, Undo::INSERT);
DocIterator it = cur.selectionBegin();
DocIterator et = cur.selectionEnd();
pit_type pit = it.pit();
Change::Type const type = pars_[pit].lookupChange(it.pos()).type;
for (; pit <= et.pit(); ++pit) {
pos_type left = ( pit == it.pit() ? it.pos() : 0 );
pos_type right =
( pit == et.pit() ? et.pos() : pars_[pit].size() + 1 );
pars_[pit].acceptChange(left, right);
}
if (type == Change::DELETED) {
ParagraphList & plist = paragraphs();
if (it.pit() + 1 < et.pit())
pars_.erase(boost::next(plist.begin(), it.pit() + 1),
boost::next(plist.begin(), et.pit()));
// Paragraph merge if appropriate:
// FIXME: change tracking (MG)
if (pars_[it.pit()].lookupChange(pars_[it.pit()].size())
== Change(Change::DELETED)) {
setCursorIntern(cur, it.pit() + 1, 0);
backspacePos0(cur);
}
}
finishUndo();
cur.clearSelection();
setCursorIntern(cur, it.pit(), 0);
}
void LyXText::rejectChange(LCursor & cur)
{
BOOST_ASSERT(this == cur.text());
if (!cur.selection() && cur.lastpos() != 0)
return;
recordUndoSelection(cur, Undo::INSERT);
DocIterator it = cur.selectionBegin();
DocIterator et = cur.selectionEnd();
pit_type pit = it.pit();
Change::Type const type = pars_[pit].lookupChange(it.pos()).type;
for (; pit <= et.pit(); ++pit) {
pos_type left = ( pit == it.pit() ? it.pos() : 0 );
pos_type right =
( pit == et.pit() ? et.pos() : pars_[pit].size() + 1 );
pars_[pit].rejectChange(left, right);
}
if (type == Change::INSERTED) {
ParagraphList & plist = paragraphs();
if (it.pit() + 1 < et.pit())
pars_.erase(boost::next(plist.begin(), it.pit() + 1),
boost::next(plist.begin(), et.pit()));
// Paragraph merge if appropriate:
// FIXME: change tracking (MG)
if (pars_[it.pit()].lookupChange(pars_[it.pit()].size())
== Change(Change::INSERTED)) {
setCursorIntern(cur, it.pit() + 1, 0);
backspacePos0(cur);
}
}
finishUndo();
cur.clearSelection();
setCursorIntern(cur, it.pit(), 0);
}
// 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);
}
}
// 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);
}
}
// 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);
}
}
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, lyx::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;
}
}
#ifdef WITH_WARNINGS
#warning changes
#endif
pars_[pit].setChar(pos, c);
++pos;
}
}
bool LyXText::erase(LCursor & cur)
{
BOOST_ASSERT(this == cur.text());
bool needsUpdate = false;
if (cur.pos() != cur.lastpos()) {
recordUndo(cur, Undo::DELETE, cur.pit());
setCursorIntern(cur, cur.pit(), cur.pos() + 1, false, cur.boundary());
needsUpdate = backspace(cur);
// FIXME: change tracking (MG)
if (cur.paragraph().lookupChange(cur.pos()) == Change(Change::DELETED))
cur.posRight();
} else if (cur.pit() != cur.lastpit()) {
LCursor scur = cur;
setCursorIntern(cur, cur.pit() + 1, 0, false, false);
if (pars_[cur.pit()].layout() == pars_[scur.pit()].layout()) {
recordUndo(scur, Undo::DELETE, scur.pit());
needsUpdate = backspace(cur);
if (cur.buffer().params().trackChanges) {
// FIXME: Change tracking (MG)
// move forward after the paragraph break is DELETED
Paragraph & par = cur.paragraph();
// FIXME: change tracking (MG)
if (par.lookupChange(par.size()) == Change(Change::DELETED))
setCursorIntern(cur, cur.pit() + 1, 0);
}
} else {
setCursorIntern(scur, scur.pit(), scur.pos(), false, scur.boundary());
}
} else
needsUpdate = dissolveInset(cur);
return needsUpdate;
}
bool LyXText::backspacePos0(LCursor & cur)
{
BOOST_ASSERT(this == cur.text());
bool needsUpdate = false;
Paragraph & par = cur.paragraph();
// is it an empty paragraph?
pos_type lastpos = cur.lastpos();
if (lastpos == 0 || (lastpos == 1 && par.isSeparator(0))) {
// This is an empty paragraph and we delete it just
// by moving the cursor one step
// left and let the DeleteEmptyParagraphMechanism
// handle the actual deletion of the paragraph.
if (cur.pit() != 0) {
// For KeepEmpty layouts we need to get
// rid of the keepEmpty setting first.
// And the only way to do this is to
// reset the layout to something
// else: f.ex. the default layout.
if (par.allowEmpty()) {
Buffer & buf = cur.buffer();
BufferParams const & bparams = buf.params();
par.layout(bparams.getLyXTextClass().defaultLayout());
}
cursorLeft(cur);
return true;
}
}
if (cur.pit() != 0)
recordUndo(cur, Undo::DELETE, cur.pit() - 1);
pit_type tmppit = cur.pit();
// 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)
if (cur.pit() != 0) {
// steps into the above paragraph.
setCursorIntern(cur, cur.pit() - 1,
pars_[cur.pit() - 1].size(),
false);
}
// Pasting is not allowed, if the paragraphs have different
// layout. 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
// Correction (Jug 20050717): Remove check about alignment!
Buffer & buf = cur.buffer();
BufferParams const & bufparams = buf.params();
LyXTextClass const & tclass = bufparams.getLyXTextClass();
pit_type const cpit = cur.pit();
if (cpit != tmppit
&& (pars_[cpit].layout() == pars_[tmppit].layout()
|| pars_[tmppit].layout() == tclass.defaultLayout()))
{
mergeParagraph(bufparams, pars_, cpit);
needsUpdate = true;
if (cur.pos() != 0 && pars_[cpit].isSeparator(cur.pos() - 1))
--cur.pos();
// the counters may have changed
ParIterator par_it(cur);
updateLabels(cur.buffer(), par_it);
setCursor(cur, cur.pit(), cur.pos(), false);
}
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);
// The cursor is at the beginning of a paragraph, so
// the the backspace will collapse two paragraphs into
// one.
if (cur.pit() != 0 && cur.buffer().params().trackChanges) {
// FIXME: Change tracking (MG)
// Previous paragraph, mark "carriage return" as
// deleted:
Paragraph & par = pars_[cur.pit() - 1];
// Take care of a just inserted para break:
// FIXME: change tracking (MG)
if (par.lookupChange(par.size()) != Change(Change::INSERTED)) {
// FIXME: change tracking (MG)
par.setChange(par.size(), Change(Change::DELETED));
setCursorIntern(cur, cur.pit() - 1, par.size());
return true;
}
}
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());
// FIXME: change tracking (MG)
cur.paragraph().erase(cur.pos(), cur.buffer().params().trackChanges);
}
if (cur.pos() == cur.lastpos())
setCurrentFont(cur);
setCursor(cur, cur.pit(), cur.pos(), false, cur.boundary());
return needsUpdate;
}
bool LyXText::dissolveInset(LCursor & cur) {
BOOST_ASSERT(this == cur.text());
if (isMainText() || cur.inset().nargs() != 1)
return false;
recordUndoInset(cur);
cur.selHandle(false);
// save position
lyx::pos_type spos = cur.pos();
lyx::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();
// FIXME: change tracking (MG)
cur.paragraph().erase(cur.pos(), b.params().trackChanges);
if (!plist.empty()) {
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;
}
Row const & LyXText::firstRow() const
{
return *paragraphs().front().rows().begin();
}
bool LyXText::redoParagraph(pit_type const pit)
{
// remove rows of paragraph, keep track of height changes
Paragraph & par = pars_[pit];
// Add bibitem insets if necessary
if (par.layout()->labeltype == LABEL_BIBLIO) {
bool hasbibitem(false);
if (!par.insetlist.empty()
// Insist on it being in pos 0
&& par.getChar(0) == Paragraph::META_INSET) {
InsetBase * inset = par.insetlist.begin()->inset;
if (inset->lyxCode() == InsetBase::BIBITEM_CODE)
hasbibitem = true;
}
if (!hasbibitem) {
InsetBibitem * inset(new
InsetBibitem(InsetCommandParams("bibitem")));
// FIXME: change tracking (MG)
par.insertInset(0, static_cast<InsetBase *>(inset), Change(Change::INSERTED));
bv()->cursor().posRight();
}
}
// redo insets
// FIXME: We should always use getFont(), see documentation of
// noFontChange() in insetbase.h.
LyXFont const bufferfont = bv()->buffer()->params().getFont();
InsetList::iterator ii = par.insetlist.begin();
InsetList::iterator iend = par.insetlist.end();
for (; ii != iend; ++ii) {
Dimension dim;
int const w = maxwidth_ - leftMargin(pit, ii->pos) - rightMargin(par);
LyXFont const & font = ii->inset->noFontChange() ?
bufferfont :
getFont(par, ii->pos);
MetricsInfo mi(bv(), font, w);
ii->inset->metrics(mi, dim);
}
// rebreak the paragraph
par.rows().clear();
Dimension dim;
par.setBeginOfBody();
pos_type z = 0;
do {
Row row(z);
rowBreakPoint(pit, row);
setRowWidth(pit, row);
setHeightOfRow(pit, row);
par.rows().push_back(row);
dim.wid = std::max(dim.wid, row.width());
dim.des += row.height();
z = row.endpos();
} while (z < par.size());
// Make sure that if a par ends in newline, there is one more row
// under it
// FIXME this is a dirty trick. Now the _same_ position in the
// paragraph occurs in _two_ different rows, and has two different
// display positions, leading to weird behaviour when moving up/down.
if (z > 0 && par.isNewline(z - 1)) {
Row row(z - 1);
row.endpos(z - 1);
setRowWidth(pit, row);
setHeightOfRow(pit, row);
par.rows().push_back(row);
dim.des += row.height();
}
dim.asc += par.rows()[0].ascent();
dim.des -= par.rows()[0].ascent();
bool const same = dim == par.dim();
par.dim() = dim;
//lyxerr << "redoParagraph: " << par.rows().size() << " rows\n";
return !same;
}
void LyXText::metrics(MetricsInfo & mi, Dimension & dim)
{
//BOOST_ASSERT(mi.base.textwidth);
if (mi.base.textwidth)
maxwidth_ = mi.base.textwidth;
//lyxerr << "LyXText::metrics: width: " << mi.base.textwidth
// << " maxWidth: " << maxwidth_ << "\nfont: " << mi.base.font << endl;
// save the caller's font locally:
font_ = mi.base.font;
unsigned int h = 0;
unsigned int w = 0;
for (pit_type pit = 0, n = paragraphs().size(); pit != n; ++pit) {
redoParagraph(pit);
Paragraph & par = paragraphs()[pit];
h += par.height();
if (w < par.width())
w = par.width();
}
dim.wid = w;
dim.asc = pars_[0].ascent();
dim.des = h - dim.asc;
dim_ = dim;
}
// 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);
}
#if 0
// 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;
lyxerr << "draw selection at " << x << endl;
DocIterator beg = cur.selectionBegin();
DocIterator end = cur.selectionEnd();
// the selection doesn't touch the visible screen
if (bv_funcs::status(pi.base.bv, beg) == bv_funcs::CUR_BELOW
|| bv_funcs::status(pi.base.bv, end) == bv_funcs::CUR_ABOVE)
return;
Paragraph const & par1 = pars_[beg.pit()];
Paragraph const & par2 = pars_[end.pit()];
Row const & row1 = par1.getRow(beg.pos(), beg.boundary());
Row const & row2 = par2.getRow(end.pos(), end.boundary());
int y1,x1,x2;
if (bv_funcs::status(pi.base.bv, beg) == bv_funcs::CUR_ABOVE) {
y1 = 0;
x1 = 0;
x2 = 0;
} else {
y1 = bv_funcs::getPos(beg).y_ - row1.ascent();
int const startx = cursorX(beg.top(), begin.boundary());
x1 = isRTL(par1) ? startx : 0;
x2 = isRTL(par1) ? 0 + dim_.wid : startx;
}
int y2,X1,X2;
if (bv_funcs::status(pi.base.bv, end) == bv_funcs::CUR_BELOW) {
y2 = pi.base.bv->workHeight();
X1 = 0;
X2 = 0;
} else {
y2 = bv_funcs::getPos(end).y_ + row2.descent();
int const endx = cursorX(end.top(), end.boundary());
X1 = isRTL(par2) ? 0 : endx;
X2 = isRTL(par2) ? endx : 0 + dim_.wid;
}
lyxerr << " y1: " << y1 << " y2: " << y2
<< " xo: " << xo_ << " wid: " << dim_.wid
<< endl;
// paint big rectangle in one go
pi.pain.fillRectangle(x, y1, dim_.wid, y2 - y1, LColor::selection);
// reset background at begin of first selected line
pi.pain.fillRectangle(x + x1, y1, x2 - x1, row1.height(),
LColor::background);
// reset background at end of last selected line
pi.pain.fillRectangle(x + X1, y2 - row2.height(),
X2 - X1, row2.height(), LColor::background);
}
#else
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;
lyxerr[Debug::DEBUG]
<< BOOST_CURRENT_FUNCTION
<< "draw selection at " << x
<< endl;
DocIterator beg = cur.selectionBegin();
DocIterator end = cur.selectionEnd();
BufferView * bv = pi.base.bv;
// 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()];
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 = dim_.wid;
} else {
Row const & row1 = par1.getRow(beg.pos(), beg.boundary());
y1 = bv_funcs::getPos(*bv, beg, beg.boundary()).y_ - row1.ascent();
y2 = y1 + row1.height();
int const startx = cursorX(beg.top(), beg.boundary());
x1 = !isRTL(par1) ? startx : 0;
x2 = !isRTL(par1) ? 0 + dim_.wid : startx;
}
int Y1,Y2,X1,X2;
if (below) {
Y1 = bv->workHeight();
Y2 = bv->workHeight();
X1 = 0;
X2 = dim_.wid;
} else {
Row const & row2 = par2.getRow(end.pos(), end.boundary());
Y1 = bv_funcs::getPos(*bv, end, end.boundary()).y_ - row2.ascent();
Y2 = Y1 + row2.height();
int const endx = cursorX(end.top(), end.boundary());
X1 = !isRTL(par2) ? 0 : endx;
X2 = !isRTL(par2) ? endx : 0 + dim_.wid;
}
if (!above && !below && &par1.getRow(beg.pos(), beg.boundary())
== &par2.getRow(end.pos(), end.boundary()))
{
// paint only one rectangle
int const b( !isRTL(par1) ? x + x1 : x + X1 );
int const w( !isRTL(par1) ? X2 - x1 : x2 - X1 );
pi.pain.fillRectangle(b, y1, w, y2 - y1, LColor::selection);
return;
}
lyxerr[Debug::DEBUG] << " y1: " << y1 << " y2: " << y2
<< "X1:" << X1 << " x2: " << X2 << " wid: " << dim_.wid
<< 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, dim_.wid,
Y1 - y2, LColor::selection);
}
#endif
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 lyx::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 lyx::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 lyx::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 lyx::NEXT_WORD:
lyxerr << "LyXText::getWord: NEXT_WORD not implemented yet"
<< endl;
break;
case lyx::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();
Paragraph::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)
{
Paragraph::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
::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::ascent() const
{
return dim_.asc;
}
int LyXText::descent() const
{
return dim_.des;
}
int LyXText::cursorX(CursorSlice const & sl, bool boundary) const
{
pit_type const pit = sl.pit();
Paragraph const & par = pars_[pit];
if (par.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 = par.getRow(sl.pos(), boundary);
pos_type cursor_vpos = 0;
RowMetrics const m = 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(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(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 = lyx::from_utf8(par.layout()->labelsep);
x += m.label_hfill + labelfm.width(lsep);
if (par.isLineSeparator(body_pos - 1))
x -= singleWidth(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(par, pos);
}
x += singleWidth(par, pos, par.getChar(pos), font);
if (hfillExpansion(par, 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(par, ppos).isVisibleRightToLeft())
x -= singleWidth(par, ppos);
else
x += singleWidth(par, ppos);
// Make sure inside an inset we always count from the left
// edge (bidi!) -- MV
if (sl.pos() < par.size()) {
font = getFont(par, sl.pos());
if (!boundary && font.isVisibleRightToLeft()
&& par.isInset(sl.pos()))
x -= par.getInset(sl.pos())->width();
}
return int(x);
}
int LyXText::cursorY(CursorSlice const & sl, bool boundary) const
{
//lyxerr << "LyXText::cursorY: boundary: " << boundary << std::endl;
Paragraph const & par = getPar(sl.pit());
if (par.rows().empty())
return 0;
int h = 0;
h -= pars_[0].rows()[0].ascent();
for (pit_type pit = 0; pit < sl.pit(); ++pit)
h += pars_[pit].height();
int pos = sl.pos();
if (pos && boundary)
--pos;
size_t const rend = par.pos2row(pos);
for (size_t rit = 0; rit != rend; ++rit)
h += par.rows()[rit].height();
h += par.rows()[rend].ascent();
return h;
}
// Returns the current font and depth as a message.
string LyXText::currentState(LCursor & cur)
{
BOOST_ASSERT(this == cur.text());
Buffer & buf = cur.buffer();
Paragraph const & par = cur.paragraph();
std::ostringstream os;
// FIXME: change tracking (MG)
bool const show_change = par.lookupChange(cur.pos()) != Change(Change::UNCHANGED);
if (buf.params().trackChanges)
os << "[C] ";
if (show_change) {
Change change = par.lookupChange(cur.pos());
Author const & a = buf.params().authors().get(change.author);
os << lyx::to_utf8(_("Change: ")) << a.name();
if (!a.email().empty())
os << " (" << a.email() << ")";
if (change.changetime)
os << lyx::to_utf8(_(" 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());
// avoid lyx::to_utf8(_(...)) re-entrance problem
string const s = font.stateText(&buf.params());
os << lyx::to_utf8(bformat(_("Font: %1$s"), lyx::from_utf8(s)));
// os << lyx::to_utf8(bformat(_("Font: %1$s"), font.stateText(&buf.params)));
// The paragraph depth
int depth = cur.paragraph().getDepth();
if (depth > 0)
os << lyx::to_utf8(bformat(_(", Depth: %1$d"), depth));
// The paragraph spacing, but only if different from
// buffer spacing.
Spacing const & spacing = par.params().spacing();
if (!spacing.isDefault()) {
os << lyx::to_utf8(_(", Spacing: "));
switch (spacing.getSpace()) {
case Spacing::Single:
os << lyx::to_utf8(_("Single"));
break;
case Spacing::Onehalf:
os << lyx::to_utf8(_("OneHalf"));
break;
case Spacing::Double:
os << lyx::to_utf8(_("Double"));
break;
case Spacing::Other:
os << lyx::to_utf8(_("Other (")) << spacing.getValueAsString() << ')';
break;
case Spacing::Default:
// should never happen, do nothing
break;
}
}
#ifdef DEVEL_VERSION
os << lyx::to_utf8(_(", Inset: ")) << &cur.inset();
os << lyx::to_utf8(_(", Paragraph: ")) << cur.pit();
os << lyx::to_utf8(_(", Id: ")) << par.id();
os << lyx::to_utf8(_(", Position: ")) << cur.pos();
os << lyx::to_utf8(_(", Boundary: ")) << cur.boundary();
// Row & row = cur.textRow();
// os << bformat(_(", Row b:%1$d e:%2$d"), row.pos(), row.endpos());
#endif
return os.str();
}
string 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;
}
}
string name = 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
size_t i = cur.depth();
while (i > 0) {
--i;
InsetBase * const in = &cur[i].inset();
if (in->lyxCode() == InsetBase::FLOAT_CODE
|| in->lyxCode() == InsetBase::WRAP_CODE) {
name = in->getInsetName();
break;
}
}
}
string text = name.substr(0, 3);
if (name == "theorem")
text = "thm"; // Create a correct prefix for prettyref
text += ':';
if (layout->latextype == LATEX_PARAGRAPH || lyxrc.label_init_length < 0)
text.erase();
// FIXME UNICODE
string par_text = lyx::to_utf8(pars_[pit].asString(cur.buffer(), false));
for (int i = 0; i < lyxrc.label_init_length; ++i) {
if (par_text.empty())
break;
string head;
par_text = split(par_text, head, ' ');
// Is it legal to use spaces in labels ?
if (i > 0)
text += '-';
text += head;
}
return text;
}
//pos_type LyXText::x2pos(pit_type pit, int row, int x) const
//{
// int lastx = 0;
// int currx = 0;
// Paragraph const & par = pars_[pit];
// Row const & r = par.rows()[row];
// int pos = r.pos();
// for (; currx < x && pos < r.endpos(); ++pos) {
// lastx = currx;
// currx += singleWidth(par, pos);
// }
// if (abs(lastx - x) < abs(currx - x) && pos != r.pos())
// --pos;
// return pos;
//}
pos_type LyXText::x2pos(pit_type pit, int row, int x) const
{
BOOST_ASSERT(row < int(pars_[pit].rows().size()));
bool bound = false;
Row const & r = pars_[pit].rows()[row];
return r.pos() + getColumnNearX(pit, r, x, bound);
}
//int LyXText::pos2x(pit_type pit, pos_type pos) const
//{
// Paragraph const & par = pars_[pit];
// Row const & r = par.rows()[row];
// int x = 0;
// pos -= r.pos();
//}
// x,y are screen coordinates
// sets cursor only within this LyXText
bool LyXText::setCursorFromCoordinates(LCursor & cur, int const x, int const y)
{
BOOST_ASSERT(this == cur.text());
pit_type pit = getPitNearY(y);
int yy = cur.bv().coordCache().get(this, pit).y_ - pars_[pit].ascent();
lyxerr[Debug::DEBUG]
<< BOOST_CURRENT_FUNCTION
<< ": x: " << x
<< " y: " << y
<< " pit: " << pit
<< " yy: " << yy << endl;
Paragraph const & par = pars_[pit];
int r = 0;
BOOST_ASSERT(par.rows().size());
for (; r < int(par.rows().size()) - 1; ++r) {
Row const & row = par.rows()[r];
if (int(yy + row.height()) > y)
break;
yy += row.height();
}
Row const & row = par.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() + getColumnNearX(pit, row, xx, bound);
lyxerr[Debug::DEBUG]
<< BOOST_CURRENT_FUNCTION
<< ": setting cursor pit: " << pit
<< " pos: " << pos
<< endl;
return setCursor(cur, pit, pos, true, bound);
}
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