lyx_mirror/src/paragraph_funcs.C
Lars Gullik Bjønnes 7c15014ec2 change "support/std_sstream.h" to <sstream>
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@8849 a592a061-630c-0410-9148-cb99ea01b6c8
2004-07-24 10:55:30 +00:00

358 lines
8.9 KiB
C

/**
* \file paragraph_funcs.C
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author Lars Gullik Bjønnes
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "paragraph_funcs.h"
#include "buffer.h"
#include "bufferparams.h"
#include "debug.h"
#include "encoding.h"
#include "gettext.h"
#include "language.h"
#include "lyxtext.h"
#include "outputparams.h"
#include "paragraph_pimpl.h"
#include "pariterator.h"
#include "sgml.h"
#include "texrow.h"
#include "vspace.h"
#include "support/filetools.h"
#include "support/lstrings.h"
#include "support/lyxlib.h"
#include <sstream>
#include <vector>
using lyx::pos_type;
using lyx::par_type;
using lyx::support::ascii_lowercase;
using lyx::support::atoi;
using lyx::support::bformat;
using lyx::support::compare_ascii_no_case;
using lyx::support::compare_no_case;
using lyx::support::contains;
using lyx::support::split;
using lyx::support::subst;
using std::auto_ptr;
using std::endl;
using std::string;
using std::vector;
using std::istringstream;
using std::ostream;
using std::pair;
namespace {
bool moveItem(Paragraph & from, Paragraph & to,
BufferParams const & params, pos_type i, pos_type j)
{
char const tmpchar = from.getChar(i);
LyXFont tmpfont = from.getFontSettings(params, i);
if (tmpchar == Paragraph::META_INSET) {
InsetBase * tmpinset = 0;
if (from.getInset(i)) {
// the inset is not in a paragraph anymore
tmpinset = from.insetlist.release(i);
from.insetlist.erase(i);
}
if (!to.insetAllowed(tmpinset->lyxCode())) {
delete tmpinset;
return false;
}
if (tmpinset)
to.insertInset(j, tmpinset, tmpfont);
} else {
if (!to.checkInsertChar(tmpfont))
return false;
to.insertChar(j, tmpchar, tmpfont);
}
return true;
}
}
void breakParagraph(BufferParams const & bparams,
ParagraphList & pars, par_type par, pos_type pos, int flag)
{
// create a new paragraph, and insert into the list
ParagraphList::iterator tmp =
pars.insert(pars.begin() + par + 1, Paragraph());
// without doing that we get a crash when typing <Return> at the
// end of a paragraph
tmp->layout(bparams.getLyXTextClass().defaultLayout());
// remember to set the inset_owner
tmp->setInsetOwner(pars[par].inInset());
if (bparams.tracking_changes)
tmp->trackChanges();
// this is an idea for a more userfriendly layout handling, I will
// see what the users say
// layout stays the same with latex-environments
if (flag) {
tmp->layout(pars[par].layout());
tmp->setLabelWidthString(pars[par].params().labelWidthString());
}
bool const isempty = (pars[par].allowEmpty() && pars[par].empty());
if (!isempty && (pars[par].size() > pos || pars[par].empty() || flag == 2)) {
tmp->layout(pars[par].layout());
tmp->params().align(pars[par].params().align());
tmp->setLabelWidthString(pars[par].params().labelWidthString());
tmp->params().depth(pars[par].params().depth());
tmp->params().noindent(pars[par].params().noindent());
// copy everything behind the break-position
// to the new paragraph
/* Note: if !keepempty, empty() == true, then we reach
* here with size() == 0. So pos_end becomes - 1. This
* doesn't cause problems because both loops below
* enforce pos <= pos_end and 0 <= pos
*/
pos_type pos_end = pars[par].size() - 1;
for (pos_type i = pos, j = pos; i <= pos_end; ++i) {
Change::Type change = pars[par].lookupChange(i);
if (moveItem(pars[par], *tmp, bparams, i, j - pos)) {
tmp->setChange(j - pos, change);
++j;
}
}
for (pos_type i = pos_end; i >= pos; --i)
pars[par].eraseIntern(i);
}
if (pos)
return;
pars[par].params().clear();
pars[par].layout(bparams.getLyXTextClass().defaultLayout());
// layout stays the same with latex-environments
if (flag) {
pars[par].layout(tmp->layout());
pars[par].setLabelWidthString(tmp->params().labelWidthString());
pars[par].params().depth(tmp->params().depth());
}
// subtle, but needed to get empty pars working right
if (bparams.tracking_changes) {
if (!pars[par].size()) {
pars[par].cleanChanges();
} else if (!tmp->size()) {
tmp->cleanChanges();
}
}
}
void breakParagraphConservative(BufferParams const & bparams,
ParagraphList & pars, par_type par, pos_type pos)
{
// create a new paragraph
Paragraph & tmp = *pars.insert(pars.begin() + par + 1, Paragraph());
tmp.makeSameLayout(pars[par]);
// When can pos > size()?
// I guess pos == size() is possible.
if (pars[par].size() > pos) {
// copy everything behind the break-position to the new
// paragraph
pos_type pos_end = pars[par].size() - 1;
for (pos_type i = pos, j = pos; i <= pos_end; ++i)
if (moveItem(pars[par], tmp, bparams, i, j - pos))
++j;
for (pos_type k = pos_end; k >= pos; --k)
pars[par].erase(k);
}
}
void mergeParagraph(BufferParams const & bparams,
ParagraphList & pars, par_type par)
{
Paragraph & next = pars[par + 1];
pos_type pos_end = next.size() - 1;
pos_type pos_insert = pars[par].size();
// ok, now copy the paragraph
for (pos_type i = 0, j = 0; i <= pos_end; ++i)
if (moveItem(next, pars[par], bparams, i, pos_insert + j))
++j;
pars.erase(pars.begin() + par + 1);
}
par_type depthHook(par_type pit,
ParagraphList const & pars, Paragraph::depth_type depth)
{
par_type newpit = pit;
if (newpit != 0)
--newpit;
while (newpit != 0 && pars[newpit].getDepth() > depth)
--newpit;
if (pars[newpit].getDepth() > depth)
return pit;
return newpit;
}
par_type outerHook(par_type par, ParagraphList const & pars)
{
if (pars[par].getDepth() == 0)
return pars.size();
return depthHook(par, pars, Paragraph::depth_type(pars[par].getDepth() - 1));
}
bool isFirstInSequence(par_type pit, ParagraphList const & pars)
{
par_type dhook = depthHook(pit, pars, pars[pit].getDepth());
return dhook == pit
|| pars[dhook].layout() != pars[pit].layout()
|| pars[dhook].getDepth() != pars[pit].getDepth();
}
int getEndLabel(par_type p, ParagraphList const & pars)
{
par_type pit = p;
Paragraph::depth_type par_depth = pars[p].getDepth();
while (pit != par_type(pars.size())) {
LyXLayout_ptr const & layout = pars[pit].layout();
int const endlabeltype = layout->endlabeltype;
if (endlabeltype != END_LABEL_NO_LABEL) {
if (p + 1 == par_type(pars.size()))
return endlabeltype;
Paragraph::depth_type const next_depth =
pars[p + 1].getDepth();
if (par_depth > next_depth ||
(par_depth == next_depth && layout != pars[p + 1].layout()))
return endlabeltype;
break;
}
if (par_depth == 0)
break;
pit = outerHook(pit, pars);
if (pit != par_type(pars.size()))
par_depth = pars[pit].getDepth();
}
return END_LABEL_NO_LABEL;
}
LyXFont const outerFont(par_type pit, ParagraphList const & pars)
{
Paragraph::depth_type par_depth = pars[pit].getDepth();
LyXFont tmpfont(LyXFont::ALL_INHERIT);
// Resolve against environment font information
while (pit != par_type(pars.size())
&& par_depth
&& !tmpfont.resolved()) {
pit = outerHook(pit, pars);
if (pit != par_type(pars.size())) {
tmpfont.realize(pars[pit].layout()->font);
par_depth = pars[pit].getDepth();
}
}
return tmpfont;
}
par_type outerPar(Buffer const & buf, InsetBase const * inset)
{
ParIterator pit = const_cast<Buffer &>(buf).par_iterator_begin();
ParIterator end = const_cast<Buffer &>(buf).par_iterator_end();
for ( ; pit != end; ++pit) {
LyXText * text;
// the second '=' below is intentional
for (int i = 0; (text = inset->getText(i)); ++i)
if (&text->paragraphs() == &pit.plist())
return pit.outerPar();
InsetList::const_iterator ii = pit->insetlist.begin();
InsetList::const_iterator iend = pit->insetlist.end();
for ( ; ii != iend; ++ii)
if (ii->inset == inset)
return pit.outerPar();
}
lyxerr << "outerPar: should not happen" << endl;
BOOST_ASSERT(false);
return buf.paragraphs().size(); // shut up compiler
}
Paragraph const & ownerPar(Buffer const & buf, InsetBase const * inset)
{
ParConstIterator pit = buf.par_iterator_begin();
ParConstIterator end = buf.par_iterator_end();
for ( ; pit != end; ++pit) {
LyXText * text;
// the second '=' below is intentional
for (int i = 0; (text = inset->getText(i)); ++i)
if (&text->paragraphs() == &pit.plist())
return *pit;
InsetList::const_iterator ii = pit->insetlist.begin();
InsetList::const_iterator iend = pit->insetlist.end();
for ( ; ii != iend; ++ii)
if (ii->inset == inset)
return *pit;
}
lyxerr << "ownerPar: should not happen" << endl;
BOOST_ASSERT(false);
return buf.paragraphs().front(); // shut up compiler
}
/// return the range of pars [beg, end[ owning the range of y [ystart, yend]
void getParsInRange(ParagraphList & pars, int ystart, int yend,
par_type & beg, par_type & end)
{
BOOST_ASSERT(!pars.empty());
par_type const endpar = pars.size();
par_type const begpar = 0;
for (beg = endpar - 1; beg != begpar && pars[beg].y > ystart; --beg)
;
for (end = beg ; end != endpar && pars[end].y <= yend; ++end)
;
}