]> git.lyx.org Git - lyx.git/blobdiff - src/paragraph_pimpl.C
* InsetMathNest.C (handleFont): avoid crash on undo when
[lyx.git] / src / paragraph_pimpl.C
index c9b7b01f80e3fbf025f1b16cdfbc20e6100f9878..bad7602b1d0e286ef030524a38709432eb5f81d0 100644 (file)
@@ -58,6 +58,15 @@ special_phrase const special_phrases[] = {
 
 size_t const phrases_nr = sizeof(special_phrases)/sizeof(special_phrase);
 
+
+bool isEncoding(BufferParams const & bparams, LyXFont const & font,
+               string const & encoding)
+{
+       return (bparams.inputenc == encoding
+               || (bparams.inputenc == "auto"
+                   && font.language()->encoding()->latexName() == encoding));
+}
+
 } // namespace anon
 
 
@@ -78,35 +87,49 @@ Paragraph::Pimpl::Pimpl(Pimpl const & p, Paragraph * owner)
 }
 
 
-void Paragraph::Pimpl::setContentsFromPar(Paragraph const & par)
-{
-       owner_->text_ = par.text_;
-       // FIXME: change tracking (MG)
-       changes_ = par.pimpl_->changes_;
-}
-
-
 bool Paragraph::Pimpl::isChanged(pos_type start, pos_type end) const
 {
-       // FIXME: change tracking (MG)
-       return false;
+       BOOST_ASSERT(start >= 0 && start <= size());
+       BOOST_ASSERT(end > start && end <= size() + 1);
 
        return changes_.isChanged(start, end);
 }
 
 
-void Paragraph::Pimpl::setChange(Change const & change)
-{
-       // FIXME: change tracking (MG)
+bool Paragraph::Pimpl::isMergedOnEndOfParDeletion(bool trackChanges) const {
+       // keep the logic here in sync with the logic of eraseChars()
 
-       return;
+       if (!trackChanges) {
+               return true;
+       }
+
+       Change change = changes_.lookup(size());
 
-       changes_.set(change, 0, size());
+       return change.type == Change::INSERTED && change.author == 0;
+}
 
-       if (change.type == Change::UNCHANGED) { // only for UNCHANGED ???
-               for (pos_type i = 0; i < size(); ++i) {
-                       if (owner_->isInset(i)) {
-                               owner_->getInset(i)->setChange(change);
+
+void Paragraph::Pimpl::setChange(Change const & change)
+{
+       // beware of the imaginary end-of-par character!
+       changes_.set(change, 0, size() + 1);
+
+       /*
+        * Propagate the change recursively - but not in case of DELETED!
+        *
+        * Imagine that your co-author makes changes in an existing inset. He
+        * sends your document to you and you come to the conclusion that the
+        * inset should go completely. If you erase it, LyX must not delete all
+        * text within the inset. Otherwise, the change tracked insertions of
+        * your co-author get lost and there is no way to restore them later.
+        *
+        * Conclusion: An inset's content should remain untouched if you delete it
+        */
+
+       if (change.type != Change::DELETED) {
+               for (pos_type pos = 0; pos < size(); ++pos) {
+                       if (owner_->isInset(pos)) {
+                               owner_->getInset(pos)->setChange(change);
                        }
                }
        }
@@ -115,111 +138,115 @@ void Paragraph::Pimpl::setChange(Change const & change)
 
 void Paragraph::Pimpl::setChange(pos_type pos, Change const & change)
 {
-       // FIXME: change tracking (MG)
-       return;
+       BOOST_ASSERT(pos >= 0 && pos <= size());
 
        changes_.set(change, pos);
+
+       // see comment in setChange(Change const &) above
+
+       if (change.type != Change::DELETED &&
+           pos < size() && owner_->isInset(pos)) {
+               owner_->getInset(pos)->setChange(change);
+       }
 }
 
 
 Change const Paragraph::Pimpl::lookupChange(pos_type pos) const
 {
-       // FIXME: change tracking (MG)
-       return Change(Change::UNCHANGED);
+       BOOST_ASSERT(pos >= 0 && pos <= size());
 
        return changes_.lookup(pos);
 }
 
 
-void Paragraph::Pimpl::acceptChange(pos_type start, pos_type end)
+void Paragraph::Pimpl::acceptChanges(pos_type start, pos_type end)
 {
-       // FIXME: change tracking (MG)
-       return;
-
-       // care for empty pars
+       BOOST_ASSERT(start >= 0 && start <= size());
+       BOOST_ASSERT(end > start && end <= size() + 1);
 
-       lyxerr[Debug::CHANGES] << "acceptchange" << endl;
-       pos_type i = start;
-
-       for (; i < end; ++i) {
-               switch (lookupChange(i).type) {
+       for (pos_type pos = start; pos < end; ++pos) {
+               switch (lookupChange(pos).type) {
                        case Change::UNCHANGED:
+                               // accept changes in nested inset
+                               if (pos < size() && owner_->isInset(pos)) {
+                                       owner_->getInset(pos)->acceptChanges();
+                               }
+
                                break;
 
                        case Change::INSERTED:
-                               // FIXME: change tracking (MG)
-                               changes_.set(Change(Change::UNCHANGED), i);
+                               changes_.set(Change(Change::UNCHANGED), pos);
+                               // also accept changes in nested inset
+                               if (pos < size() && owner_->isInset(pos)) {
+                                       owner_->getInset(pos)->acceptChanges();
+                               }
                                break;
 
                        case Change::DELETED:
-                               // Suppress access to nonexistent
-                               // "end-of-paragraph char":
-                               if (i < size()) {
-                                       eraseChar(i);
+                               // Suppress access to non-existent
+                               // "end-of-paragraph char"
+                               if (pos < size()) {
+                                       eraseChar(pos, false);
                                        --end;
-                                       --i;
+                                       --pos;
                                }
                                break;
                }
-       }
 
-       lyxerr[Debug::CHANGES] << "endacceptchange" << endl;
-       // FIXME: change tracking (MG)
-       // changes_.reset(Change::UNCHANGED);
+       }
 }
 
 
-void Paragraph::Pimpl::rejectChange(pos_type start, pos_type end)
+void Paragraph::Pimpl::rejectChanges(pos_type start, pos_type end)
 {
-       // FIXME: change tracking (MG)
-       return;
-
-       // care for empty pars
+       BOOST_ASSERT(start >= 0 && start <= size());
+       BOOST_ASSERT(end > start && end <= size() + 1);
 
-       pos_type i = start;
-
-       for (; i < end; ++i) {
-               switch (lookupChange(i).type) {
+       for (pos_type pos = start; pos < end; ++pos) {
+               switch (lookupChange(pos).type) {
                        case Change::UNCHANGED:
+                               // reject changes in nested inset
+                               if (pos < size() && owner_->isInset(pos)) {
+                                       owner_->getInset(pos)->rejectChanges();
+                               }
                                break;
 
                        case Change::INSERTED:
-                               if (i < size()) {
-                                       eraseChar(i);
+                               // Suppress access to non-existent
+                               // "end-of-paragraph char"
+                               if (pos < size()) {
+                                       eraseChar(pos, false);
                                        --end;
-                                       --i;
+                                       --pos;
                                }
                                break;
 
                        case Change::DELETED:
-                               // FIXME: change tracking (MG)
-                               changes_.set(Change(Change::UNCHANGED), i);
-                               // No real char at position size():
-                               if (i < size() && owner_->isInset(i))
-                                       // FIXME: change tracking (MG)
-                                       owner_->getInset(i)->setChange(Change(Change::UNCHANGED));
+                               changes_.set(Change(Change::UNCHANGED), pos);
+
+                               // Do NOT reject changes within a deleted inset!
+                               // There may be insertions of a co-author inside of it!
+
                                break;
                }
        }
-       // FIXME: change tracking (MG)
-       // changes_.reset(Change::UNCHANGED);
 }
 
 
 Paragraph::value_type Paragraph::Pimpl::getChar(pos_type pos) const
 {
+       BOOST_ASSERT(pos >= 0 && pos <= size());
+
        return owner_->getChar(pos);
 }
 
 
 void Paragraph::Pimpl::insertChar(pos_type pos, value_type c, Change const & change)
 {
-       BOOST_ASSERT(pos <= size());
+       BOOST_ASSERT(pos >= 0 && pos <= size());
 
-       // FIXME: change tracking (MG)
-       if (false) {
-               // changes_.record(change, pos);
-       }
+       // track change
+       changes_.insert(change, pos);
 
        // This is actually very common when parsing buffers (and
        // maybe inserting ascii text)
@@ -233,9 +260,8 @@ void Paragraph::Pimpl::insertChar(pos_type pos, value_type c, Change const & cha
 
        // Update the font table.
        FontTable search_font(pos, LyXFont());
-       for (FontList::iterator it = lower_bound(fontlist.begin(),
-                                                     fontlist.end(),
-                                                     search_font, matchFT());
+       for (FontList::iterator it 
+             = lower_bound(fontlist.begin(), fontlist.end(), search_font, matchFT());
             it != fontlist.end(); ++it)
        {
                it->pos(it->pos() + 1);
@@ -246,11 +272,11 @@ void Paragraph::Pimpl::insertChar(pos_type pos, value_type c, Change const & cha
 }
 
 
-void Paragraph::Pimpl::insertInset(pos_type pos,
-                                  InsetBase * inset, Change const & change)
+void Paragraph::Pimpl::insertInset(pos_type pos, InsetBase * inset,
+                                   Change const & change)
 {
        BOOST_ASSERT(inset);
-       BOOST_ASSERT(pos <= size());
+       BOOST_ASSERT(pos >= 0 && pos <= size());
 
        insertChar(pos, META_INSET, change);
        BOOST_ASSERT(owner_->text_[pos] == META_INSET);
@@ -260,12 +286,38 @@ void Paragraph::Pimpl::insertInset(pos_type pos,
 }
 
 
-void Paragraph::Pimpl::eraseChar(pos_type pos)
+bool Paragraph::Pimpl::eraseChar(pos_type pos, bool trackChanges)
 {
-       // FIXME: change tracking (MG)
-       // do something like changes_.erase(i);
-       // in one of the next patches, the two erase functions 
-       // will be merged but I don't want to break too many things at the same time :-)
+       BOOST_ASSERT(pos >= 0 && pos <= size());
+
+       // keep the logic here in sync with the logic of isMergedOnEndOfParDeletion()
+
+       if (trackChanges) {
+               Change change = changes_.lookup(pos);
+
+               // set the character to DELETED if 
+               //  a) it was previously unchanged or
+               //  b) it was inserted by a co-author
+
+               if (change.type == Change::UNCHANGED ||
+                   (change.type == Change::INSERTED && change.author != 0)) {
+                       setChange(pos, Change(Change::DELETED));
+                       return false;
+               }
+
+               if (change.type == Change::DELETED)
+                       return false;
+       }
+
+       // Don't physically access the imaginary end-of-paragraph character.
+       // eraseChar() can only mark it as DELETED. A physical deletion of
+       // end-of-par must be handled externally.
+       if (pos == size()) {
+               return false;
+       }
+
+       // track change
+       changes_.erase(pos);
 
        // if it is an inset, delete the inset entry
        if (owner_->text_[pos] == Paragraph::META_INSET) {
@@ -306,39 +358,16 @@ void Paragraph::Pimpl::eraseChar(pos_type pos)
 
        // Update the insetlist
        owner_->insetlist.decreasePosAfterPos(pos);
-}
 
-
-bool Paragraph::Pimpl::eraseChar(pos_type pos, bool /*trackChanges*/)
-{
-       BOOST_ASSERT(pos <= size());
-
-       // FIXME: change tracking (MG)
-       if (false) {
-               Change::Type changetype(changes_.lookup(pos).type);
-
-               // only allow the actual removal if it was /new/ text
-               if (changetype != Change::INSERTED) {
-                       // changes_.record(Change(Change::DELETED), pos);
-                       if (pos < size() && owner_->isInset(pos))
-                               // FIXME: change tracking (MG)
-                               owner_->getInset(pos)->setChange(Change(Change::DELETED));
-                       return false;
-               }
-       }
-
-       // Don't physically access nonexistent end-of-paragraph char
-       if (pos < size()) {
-               eraseChar(pos);
-               return true;
-       }
-
-       return false;
+       return true;
 }
 
 
-int Paragraph::Pimpl::erase(pos_type start, pos_type end, bool trackChanges)
+int Paragraph::Pimpl::eraseChars(pos_type start, pos_type end, bool trackChanges)
 {
+       BOOST_ASSERT(start >= 0 && start <= size());
+       BOOST_ASSERT(end >= start && end <= size() + 1);
+
        pos_type i = start;
        for (pos_type count = end - start; count; --count) {
                if (!eraseChar(i, trackChanges))
@@ -554,13 +583,8 @@ void Paragraph::Pimpl::simpleTeXSpecialChars(Buffer const & buf,
                case 0xb9:    // ¹ SUPERSCRIPT ONE
                case 0xac:    // ¬ NOT SIGN
                case 0xb5:    // µ MICRO SIGN
-                       if ((bparams.inputenc == "latin1" ||
-                            bparams.inputenc == "latin9") ||
-                           (bparams.inputenc == "auto" &&
-                            (font.language()->encoding()->latexName()
-                             == "latin1" ||
-                             font.language()->encoding()->latexName()
-                             == "latin9"))) {
+                       if (isEncoding(bparams, font, "latin1")
+                           || isEncoding(bparams, font, "latin9")) {
                                os << "\\ensuremath{";
                                os.put(c);
                                os << '}';
@@ -636,6 +660,73 @@ void Paragraph::Pimpl::simpleTeXSpecialChars(Buffer const & buf,
                        }
                        break;
 
+               case 0x20ac:    // EURO SIGN
+                       if (isEncoding(bparams, font, "latin9")
+                           || isEncoding(bparams, font, "cp1251")
+                           || isEncoding(bparams, font, "utf8")
+                           || isEncoding(bparams, font, "latin10")
+                           || isEncoding(bparams, font, "cp858")) {
+                               os.put(c);
+                       } else {
+                               os << "\\texteuro{}";
+                               column += 10;
+                       }
+                       break;
+
+               // These characters are covered by latin1, but not
+               // by latin9 (a.o.). We have to support them because
+               // we switched the default of latin1-languages to latin9
+               case 0xa4:    // CURRENCY SYMBOL
+               case 0xa6:    // BROKEN BAR
+               case 0xa8:    // DIAERESIS
+               case 0xb4:    // ACUTE ACCENT
+               case 0xb8:    // CEDILLA
+               case 0xbd:    // 1/2 FRACTION
+               case 0xbc:    // 1/4 FRACTION
+               case 0xbe:    // 3/4 FRACTION
+                       if (isEncoding(bparams, font, "latin1")
+                           || isEncoding(bparams, font, "latin5")
+                           || isEncoding(bparams, font, "utf8")) {
+                               os.put(c);
+                               break;
+                       } else {
+                               switch (c) {
+                               case 0xa4:
+                                       os << "\\textcurrency{}";
+                                       column += 15;
+                                       break;
+                               case 0xa6:
+                                       os << "\\textbrokenbar{}";
+                                       column += 16;
+                                       break;
+                               case 0xa8:
+                                       os << "\\textasciidieresis{}";
+                                       column += 20;
+                                       break;
+                               case 0xb4:
+                                       os << "\\textasciiacute{}";
+                                       column += 17;
+                                       break;
+                               case 0xb8: // from latin1.def:
+                                       os << "\\c\\ ";
+                                       column += 3;
+                                       break;
+                               case 0xbd:
+                                       os << "\\textonehalf{}";
+                                       column += 14;
+                                       break;
+                               case 0xbc:
+                                       os << "\\textonequarter{}";
+                                       column += 17;
+                                       break;
+                               case 0xbe:
+                                       os << "\\textthreequarters{}";
+                                       column += 20;
+                                       break;
+                               }
+                               break;
+                       }
+
                case '$': case '&':
                case '%': case '#': case '{':
                case '}': case '_':
@@ -732,7 +823,7 @@ void Paragraph::Pimpl::validate(LaTeXFeatures & features,
                                             << endl;
                        features.require("noun");
                        lyxerr[Debug::LATEX] << "Noun enabled. Font: "
-                                            << fcit->font().stateText(0)
+                                            << to_utf8(fcit->font().stateText(0))
                                             << endl;
                }
                switch (fcit->font().color()) {
@@ -747,7 +838,7 @@ void Paragraph::Pimpl::validate(LaTeXFeatures & features,
                default:
                        features.require("color");
                        lyxerr[Debug::LATEX] << "Color enabled. Font: "
-                                            << fcit->font().stateText(0)
+                                            << to_utf8(fcit->font().stateText(0))
                                             << endl;
                }
 
@@ -786,6 +877,12 @@ void Paragraph::Pimpl::validate(LaTeXFeatures & features,
                                break;
                        }
                }
+               // these glyphs require the textcomp package
+               if (getChar(i) == 0x20ac || getChar(i) == 0xa4
+                   || getChar(i) == 0xa6 || getChar(i) == 0xa8
+                   || getChar(i) == 0xb4 || getChar(i) == 0xbd
+                   || getChar(i) == 0xbc || getChar(i) == 0xbe)
+                       features.require("textcomp");
        }
 }