]> git.lyx.org Git - lyx.git/blobdiff - src/paragraph_funcs.C
update build instructions (Qt 4.2.2 etc.)
[lyx.git] / src / paragraph_funcs.C
index 20f9bcb8191f28dc135d050512320206ff827b7a..4ec57ef3eed6e957a8e90b7da21ed677d4460512 100644 (file)
 
 #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::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;
+#include "debug.h"
 
 
-namespace {
+namespace lyx {
 
-bool moveItem(Paragraph & from, Paragraph & to,
-       BufferParams const & params, pos_type i, pos_type j)
+using std::string;
+using std::endl;
+
+
+static bool moveItem(Paragraph & fromPar, pos_type fromPos,
+       Paragraph & toPar, pos_type toPos, BufferParams const & params)
 {
-       Paragraph::value_type 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);
+       // Note: moveItem() does not honour change tracking!
+       // Therefore, it should only be used for breaking and merging paragraphs
+
+       Paragraph::value_type const tmpChar = fromPar.getChar(fromPos);
+       LyXFont const tmpFont = fromPar.getFontSettings(params, fromPos);
+       Change const tmpChange = fromPar.lookupChange(fromPos);
+
+       if (tmpChar == Paragraph::META_INSET) {
+               InsetBase * tmpInset = 0;
+               if (fromPar.getInset(fromPos)) {
+                       // the inset is not in the paragraph any more
+                       tmpInset = fromPar.insetlist.release(fromPos);
                }
 
-               if (!to.insetAllowed(tmpinset->lyxCode())) {
-                       delete tmpinset;
+               fromPar.eraseChar(fromPos, false);
+
+               if (!toPar.insetAllowed(tmpInset->lyxCode())) {
+                       delete tmpInset;
                        return false;
                }
-               if (tmpinset)
-                       to.insertInset(j, tmpinset, tmpfont);
+
+               toPar.insertInset(toPos, tmpInset, tmpFont, tmpChange);
        } else {
-               if (!to.checkInsertChar(tmpfont))
-                       return false;
-               to.insertChar(j, tmpchar, tmpfont);
+               fromPar.eraseChar(fromPos, false);
+               toPar.insertChar(toPos, tmpChar, tmpFont, tmpChange);
        }
-       return true;
-}
 
+       return true;
 }
 
 
 void breakParagraph(BufferParams const & bparams,
-       ParagraphList & pars, par_type par_offset, pos_type pos, int flag)
+       ParagraphList & pars, pit_type par_offset, pos_type pos, int flag)
 {
        // create a new paragraph, and insert into the list
        ParagraphList::iterator tmp =
-               pars.insert(pars.begin() + par_offset + 1, Paragraph());
+               pars.insert(boost::next(pars.begin(), par_offset + 1),
+                           Paragraph());
 
        Paragraph & par = pars[par_offset];
 
@@ -102,16 +74,17 @@ void breakParagraph(BufferParams const & bparams,
        // remember to set the inset_owner
        tmp->setInsetOwner(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(par.layout());
                tmp->setLabelWidthString(par.params().labelWidthString());
+               tmp->params().depth(par.params().depth());
+       } else if (par.params().depth() > 0) {
+               Paragraph const & hook = pars[outerHook(par_offset, pars)];
+               tmp->layout(hook.layout());
+               // not sure the line below is useful
+               tmp->setLabelWidthString(par.params().labelWidthString());
+               tmp->params().depth(hook.params().depth());
        }
 
        bool const isempty = (par.allowEmpty() && par.empty());
@@ -124,7 +97,7 @@ void breakParagraph(BufferParams const & bparams,
                tmp->params().depth(par.params().depth());
                tmp->params().noindent(par.params().noindent());
 
-               // copy everything behind the break-position
+               // move everything behind the break position
                // to the new paragraph
 
                /* Note: if !keepempty, empty() == true, then we reach
@@ -134,23 +107,23 @@ void breakParagraph(BufferParams const & bparams,
                 */
                pos_type pos_end = par.size() - 1;
 
-               for (pos_type i = pos, j = pos; i <= pos_end; ++i) {
-                       Change::Type change = par.lookupChange(i);
-                       if (moveItem(par, *tmp, bparams, i, j - pos)) {
-                               tmp->setChange(j - pos, change);
+               for (pos_type i = pos, j = 0; i <= pos_end; ++i) {
+                       if (moveItem(par, pos, *tmp, j, bparams)) {
                                ++j;
                        }
                }
-
-               for (pos_type i = pos_end; i >= pos; --i)
-                       par.eraseIntern(i);
        }
 
+       // Move over the end-of-par change information
+       tmp->setChange(tmp->size(), par.lookupChange(par.size()));
+       par.setChange(par.size(), Change(bparams.trackChanges ?
+                                          Change::INSERTED : Change::UNCHANGED));
+
        if (pos) {
                // Make sure that we keep the language when
-               // breaking paragrpah.
+               // breaking paragraph.
                if (tmp->empty()) {
-                       LyXFont changed = tmp->getFirstFontSettings();
+                       LyXFont changed = tmp->getFirstFontSettings(bparams);
                        LyXFont old = par.getFontSettings(bparams, par.size());
                        changed.setLanguage(old.language());
                        tmp->setFont(0, changed);
@@ -159,9 +132,10 @@ void breakParagraph(BufferParams const & bparams,
                return;
        }
 
-       par.params().clear();
-
-       par.layout(bparams.getLyXTextClass().defaultLayout());
+       if (!isempty) {
+               par.params().clear();
+               par.layout(bparams.getLyXTextClass().defaultLayout());
+       }
 
        // layout stays the same with latex-environments
        if (flag) {
@@ -169,46 +143,40 @@ void breakParagraph(BufferParams const & bparams,
                par.setLabelWidthString(tmp->params().labelWidthString());
                par.params().depth(tmp->params().depth());
        }
-
-       // subtle, but needed to get empty pars working right
-       if (bparams.tracking_changes) {
-               if (!par.size()) {
-                       par.cleanChanges();
-               } else if (!tmp->size()) {
-                       tmp->cleanChanges();
-               }
-       }
 }
 
 
 void breakParagraphConservative(BufferParams const & bparams,
-       ParagraphList & pars, par_type par_offset, pos_type pos)
+       ParagraphList & pars, pit_type par_offset, pos_type pos)
 {
        // create a new paragraph
-       Paragraph & tmp = *pars.insert(pars.begin() + par_offset + 1, Paragraph());
+       Paragraph & tmp = *pars.insert(boost::next(pars.begin(), par_offset + 1),
+                                      Paragraph());
        Paragraph & par = pars[par_offset];
 
        tmp.makeSameLayout(par);
 
-       // When can pos > size()?
-       // I guess pos == size() is possible.
-       if (par.size() > pos) {
-               // copy everything behind the break-position to the new
-               // paragraph
+       BOOST_ASSERT(pos <= par.size());
+
+       if (pos < par.size()) {
+               // move everything behind the break position to the new paragraph
                pos_type pos_end = par.size() - 1;
 
-               for (pos_type i = pos, j = pos; i <= pos_end; ++i)
-                       if (moveItem(par, tmp, bparams, i, j - pos))
+               for (pos_type i = pos, j = 0; i <= pos_end; ++i) {
+                       if (moveItem(par, pos, tmp, j, bparams)) {
                                ++j;
-
-               for (pos_type k = pos_end; k >= pos; --k)
-                       par.erase(k);
+                       }
+               }
+               // Move over the end-of-par change information
+               tmp.setChange(tmp.size(), par.lookupChange(par.size()));
+               par.setChange(par.size(), Change(bparams.trackChanges ?
+                                          Change::INSERTED : Change::UNCHANGED));
        }
 }
 
 
 void mergeParagraph(BufferParams const & bparams,
-       ParagraphList & pars, par_type par_offset)
+       ParagraphList & pars, pit_type par_offset)
 {
        Paragraph & next = pars[par_offset + 1];
        Paragraph & par = pars[par_offset];
@@ -216,19 +184,34 @@ void mergeParagraph(BufferParams const & bparams,
        pos_type pos_end = next.size() - 1;
        pos_type pos_insert = par.size();
 
-       // ok, now copy the paragraph
-       for (pos_type i = 0, j = 0; i <= pos_end; ++i)
-               if (moveItem(next, par, bparams, i, pos_insert + j))
+       // the imaginary end-of-paragraph character (at par.size()) has to be
+       // marked as unmodified. Otherwise, its change is adopted by the first
+       // character of the next paragraph.
+       if (par.lookupChange(par.size()).type != Change::UNCHANGED) {
+               lyxerr[Debug::CHANGES] <<
+                  "merging par with inserted/deleted end-of-par character" << endl;
+               par.setChange(par.size(), Change(Change::UNCHANGED));
+       }
+
+       Change change = next.lookupChange(next.size());
+
+       // move the content of the second paragraph to the end of the first one
+       for (pos_type i = 0, j = pos_insert; i <= pos_end; ++i) {
+               if (moveItem(next, 0, par, j, bparams)) {
                        ++j;
+               }
+       }
+
+       // move the change of the end-of-paragraph character
+       par.setChange(par.size(), change);
 
-       pars.erase(pars.begin() + par_offset + 1);
+       pars.erase(boost::next(pars.begin(), par_offset + 1));
 }
 
 
-par_type depthHook(par_type pit,
-       ParagraphList const & pars, Paragraph::depth_type depth)
+pit_type depthHook(pit_type pit, ParagraphList const & pars, depth_type depth)
 {
-       par_type newpit = pit;
+       pit_type newpit = pit;
 
        if (newpit != 0)
                --newpit;
@@ -243,43 +226,45 @@ par_type depthHook(par_type pit,
 }
 
 
-par_type outerHook(par_type par_offset, ParagraphList const & pars)
+pit_type outerHook(pit_type par_offset, ParagraphList const & pars)
 {
        Paragraph const & par = pars[par_offset];
 
        if (par.getDepth() == 0)
                return pars.size();
-       return depthHook(par_offset, pars, Paragraph::depth_type(par.getDepth() - 1));
+       return depthHook(par_offset, pars, depth_type(par.getDepth() - 1));
 }
 
 
-bool isFirstInSequence(par_type par_offset, ParagraphList const & pars)
+bool isFirstInSequence(pit_type par_offset, ParagraphList const & pars)
 {
        Paragraph const & par = pars[par_offset];
 
-       par_type dhook_offset = depthHook(par_offset, pars, par.getDepth());
+       pit_type dhook_offset = depthHook(par_offset, pars, par.getDepth());
+
+       if (dhook_offset == par_offset)
+               return true;
 
        Paragraph const & dhook = pars[dhook_offset];
 
-       return dhook_offset == par_offset
-               || dhook.layout() != par.layout()
+       return dhook.layout() != par.layout()
                || dhook.getDepth() != par.getDepth();
 }
 
 
-int getEndLabel(par_type p, ParagraphList const & pars)
+int getEndLabel(pit_type p, ParagraphList const & pars)
 {
-       par_type pit = p;
-       Paragraph::depth_type par_depth = pars[p].getDepth();
-       while (pit != par_type(pars.size())) {
+       pit_type pit = p;
+       depth_type par_depth = pars[p].getDepth();
+       while (pit != pit_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()))
+                       if (p + 1 == pit_type(pars.size()))
                                return endlabeltype;
 
-                       Paragraph::depth_type const next_depth =
+                       depth_type const next_depth =
                                pars[p + 1].getDepth();
                        if (par_depth > next_depth ||
                            (par_depth == next_depth && layout != pars[p + 1].layout()))
@@ -289,24 +274,24 @@ int getEndLabel(par_type p, ParagraphList const & pars)
                if (par_depth == 0)
                        break;
                pit = outerHook(pit, pars);
-               if (pit != par_type(pars.size()))
+               if (pit != pit_type(pars.size()))
                        par_depth = pars[pit].getDepth();
        }
        return END_LABEL_NO_LABEL;
 }
 
 
-LyXFont const outerFont(par_type par_offset, ParagraphList const & pars)
+LyXFont const outerFont(pit_type par_offset, ParagraphList const & pars)
 {
-       Paragraph::depth_type par_depth = pars[par_offset].getDepth();
+       depth_type par_depth = pars[par_offset].getDepth();
        LyXFont tmpfont(LyXFont::ALL_INHERIT);
 
        // Resolve against environment font information
-       while (par_offset != par_type(pars.size())
+       while (par_offset != pit_type(pars.size())
               && par_depth
               && !tmpfont.resolved()) {
                par_offset = outerHook(par_offset, pars);
-               if (par_offset != par_type(pars.size())) {
+               if (par_offset != pit_type(pars.size())) {
                        tmpfont.realize(pars[par_offset].layout()->font);
                        par_depth = pars[par_offset].getDepth();
                }
@@ -316,57 +301,19 @@ LyXFont const outerFont(par_type par_offset, ParagraphList const & pars)
 }
 
 
-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
-}
-
-
-/// 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)
-               ;
-}
-
-
 /// return the number of InsetOptArg in a paragraph
 int numberOfOptArgs(Paragraph const & par)
 {
        int num = 0;
-       
+
        InsetList::const_iterator it = par.insetlist.begin();
        InsetList::const_iterator end = par.insetlist.end();
        for (; it != end ; ++it) {
-               if (it->inset->lyxCode() == InsetBase::OPTARG_CODE) 
+               if (it->inset->lyxCode() == InsetBase::OPTARG_CODE)
                        ++num;
        }
        return num;
 }
 
 
+} // namespace lyx