]> git.lyx.org Git - lyx.git/blobdiff - src/Changes.cpp
Fix bug #11398
[lyx.git] / src / Changes.cpp
index 685e69b0ee9007f52bc57253dedb08319e256a6a..5f8e3b21bf2af4dab62099d7a4c92f6dceaf5c8f 100644 (file)
 #include "Author.h"
 #include "Buffer.h"
 #include "BufferParams.h"
+#include "Encoding.h"
 #include "LaTeXFeatures.h"
+#include "MetricsInfo.h"
+#include "OutputParams.h"
 #include "Paragraph.h"
+#include "texstream.h"
 #include "TocBackend.h"
 
 #include "support/debug.h"
 #include "support/gettext.h"
 #include "support/lassert.h"
+#include "support/lstrings.h"
+#include "support/mutex.h"
+
+#include "frontends/alert.h"
+#include "frontends/FontMetrics.h"
+#include "frontends/Painter.h"
 
 #include <ostream>
 
@@ -31,6 +41,9 @@ using namespace std;
 
 namespace lyx {
 
+using frontend::Painter;
+using frontend::FontMetrics;
+
 /*
  * Class Change has a changetime field that specifies the exact time at which
  * a specific change was made. The change time is used as a guidance for the
@@ -54,9 +67,9 @@ bool Change::isSimilarTo(Change const & change) const
 }
 
 
-ColorCode Change::color() const
+Color Change::color() const
 {
-       ColorCode color = Color_none;
+       Color color = Color_none;
        switch (author % 5) {
                case 0:
                        color = Color_changedtextauthor1;
@@ -74,6 +87,10 @@ ColorCode Change::color() const
                        color = Color_changedtextauthor5;
                        break;
        }
+
+       if (deleted())
+               color.mergeColor = Color_deletedtextmodifier;
+
        return color;
 }
 
@@ -125,7 +142,7 @@ void Changes::set(Change const & change, pos_type const start, pos_type const en
 {
        if (change.type != Change::UNCHANGED) {
                LYXERR(Debug::CHANGES, "setting change (type: " << change.type
-                       << ", author: " << change.author 
+                       << ", author: " << change.author
                        << ", time: " << long(change.changetime)
                        << ") in range (" << start << ", " << end << ")");
        }
@@ -196,16 +213,13 @@ void Changes::erase(pos_type const pos)
 {
        LYXERR(Debug::CHANGES, "Erasing change at position " << pos);
 
-       ChangeTable::iterator it = table_.begin();
-       ChangeTable::iterator end = table_.end();
-
-       for (; it != end; ++it) {
+       for (ChangeRange & cr : table_) {
                // range (pos,pos+x) becomes (pos,pos+x-1)
-               if (it->range.start > pos)
-                       --(it->range.start);
+               if (cr.range.start > pos)
+                       --(cr.range.start);
                // range (pos-x,pos) stays (pos-x,pos)
-               if (it->range.end > pos)
-                       --(it->range.end);
+               if (cr.range.end > pos)
+                       --(cr.range.end);
        }
 
        merge();
@@ -219,17 +233,14 @@ void Changes::insert(Change const & change, lyx::pos_type pos)
                        << " at position " << pos);
        }
 
-       ChangeTable::iterator it = table_.begin();
-       ChangeTable::iterator end = table_.end();
-
-       for (; it != end; ++it) {
+       for (ChangeRange & cr : table_) {
                // range (pos,pos+x) becomes (pos+1,pos+x+1)
-               if (it->range.start >= pos)
-                       ++(it->range.start);
+               if (cr.range.start >= pos)
+                       ++(cr.range.start);
 
                // range (pos-x,pos) stays as it is
-               if (it->range.end > pos)
-                       ++(it->range.end);
+               if (cr.range.end > pos)
+                       ++(cr.range.end);
        }
 
        set(change, pos, pos + 1); // set will call merge
@@ -239,33 +250,46 @@ void Changes::insert(Change const & change, lyx::pos_type pos)
 Change const & Changes::lookup(pos_type const pos) const
 {
        static Change const noChange = Change(Change::UNCHANGED);
+       for (ChangeRange const & cr : table_)
+               if (cr.range.contains(pos))
+                       return cr.change;
+       return noChange;
+}
 
-       ChangeTable::const_iterator it = table_.begin();
-       ChangeTable::const_iterator const end = table_.end();
-
-       for (; it != end; ++it) {
-               if (it->range.contains(pos))
-                       return it->change;
-       }
 
-       return noChange;
+bool Changes::isDeleted(pos_type start, pos_type end) const
+{
+       for (ChangeRange const & cr : table_)
+               if (cr.range.contains(Range(start, end))) {
+                       LYXERR(Debug::CHANGES, "range ("
+                               << start << ", " << end << ") fully contains ("
+                               << cr.range.start << ", " << cr.range.end
+                               << ") of type " << cr.change.type);
+                       return cr.change.type == Change::DELETED;
+               }
+       return false;
 }
 
 
 bool Changes::isChanged(pos_type const start, pos_type const end) const
 {
-       ChangeTable::const_iterator it = table_.begin();
-       ChangeTable::const_iterator const itend = table_.end();
-
-       for (; it != itend; ++it) {
-               if (it->range.intersects(Range(start, end))) {
+       for (ChangeRange const & cr : table_)
+               if (cr.range.intersects(Range(start, end))) {
                        LYXERR(Debug::CHANGES, "found intersection of range ("
                                << start << ", " << end << ") with ("
-                               << it->range.start << ", " << it->range.end
-                               << ") of type " << it->change.type);
+                               << cr.range.start << ", " << cr.range.end
+                               << ") of type " << cr.change.type);
                        return true;
                }
-       }
+       return false;
+}
+
+
+bool Changes::isChanged() const
+{
+       for (ChangeRange const & cr : table_)
+               if (cr.change.changed())
+                       return true;
        return false;
 }
 
@@ -312,42 +336,112 @@ void Changes::merge()
 }
 
 
-int Changes::latexMarkChange(odocstream & os, BufferParams const & bparams,
-                            Change const & oldChange, Change const & change)
+namespace {
+
+docstring getLaTeXMarkup(docstring const & macro, docstring const & author,
+                        docstring const & chgTime,
+                        OutputParams const & runparams)
+{
+       if (macro.empty())
+               return docstring();
+
+       docstring uncodable_author;
+       odocstringstream ods;
+
+       ods << macro;
+       // convert utf8 author name to something representable
+       // in the current encoding
+       pair<docstring, docstring> author_latexed =
+               runparams.encoding->latexString(author, runparams.dryrun);
+       if (!author_latexed.second.empty()) {
+               LYXERR0("Omitting uncodable characters '"
+                       << author_latexed.second
+                       << "' in change author name!");
+               uncodable_author = author;
+       }
+       ods << author_latexed.first << "}{" << chgTime << "}{";
+
+       // warn user (once) if we found uncodable glyphs.
+       if (!uncodable_author.empty()) {
+               static std::set<docstring> warned_authors;
+               static Mutex warned_mutex;
+               Mutex::Locker locker(&warned_mutex);
+               if (warned_authors.find(uncodable_author) == warned_authors.end()) {
+                       frontend::Alert::warning(_("Uncodable character in author name"),
+                               support::bformat(_("The author name '%1$s',\n"
+                                 "used for change tracking, contains the following glyphs that\n"
+                                 "cannot be represented in the current encoding: %2$s.\n"
+                                 "These glyphs will be omitted in the exported LaTeX file.\n\n"
+                                 "Choose an appropriate document encoding (such as utf8)\n"
+                                 "or change the spelling of the author name."),
+                               uncodable_author, author_latexed.second));
+                       warned_authors.insert(uncodable_author);
+               }
+       }
+
+       return ods.str();
+}
+
+} // namespace
+
+
+int Changes::latexMarkChange(otexstream & os, BufferParams const & bparams,
+                            Change const & oldChange, Change const & change,
+                            OutputParams const & runparams)
 {
-       if (!bparams.outputChanges || oldChange == change)
+       if (!bparams.output_changes || oldChange == change)
                return 0;
 
        int column = 0;
 
+       bool const dvipost = LaTeXFeatures::isAvailable("dvipost") &&
+                       (runparams.flavor == OutputParams::LATEX
+                        || runparams.flavor == OutputParams::DVILUATEX);
+
        if (oldChange.type != Change::UNCHANGED) {
-               os << '}'; // close \lyxadded or \lyxdeleted
+               // close \lyxadded or \lyxdeleted
+               os << '}';
                column++;
+               if (oldChange.type == Change::DELETED
+                   && !runparams.wasDisplayMath && !dvipost)
+                       --runparams.inulemcmd;
        }
 
        docstring chgTime;
-       chgTime += ctime(&change.changetime);
-       chgTime.erase(chgTime.end() - 1); // remove trailing '\n'
+       chgTime += asctime(gmtime(&change.changetime));
+       // remove trailing '\n'
+       chgTime.erase(chgTime.end() - 1);
 
+       docstring macro_beg;
        if (change.type == Change::DELETED) {
-               docstring str = "\\lyxdeleted{" +
-                       bparams.authors().get(change.author).name() + "}{" +
-                       chgTime + "}{";
-               os << str;
-               column += str.size();
-       } else if (change.type == Change::INSERTED) {
-               docstring str = "\\lyxadded{" +
-                       bparams.authors().get(change.author).name() + "}{" +
-                       chgTime + "}{";
-               os << str;
-               column += str.size();
+               macro_beg = from_ascii("\\lyxdeleted{");
+               if (!runparams.inDisplayMath && !dvipost)
+                       ++runparams.inulemcmd;
+       }
+       else if (change.type == Change::INSERTED)
+               macro_beg = from_ascii("\\lyxadded{");
+
+       docstring str = getLaTeXMarkup(macro_beg,
+                                      bparams.authors().get(change.author).name(),
+                                      chgTime, runparams);
+
+       // signature needed by \lyxsout to correctly strike out display math
+       if (change.type == Change::DELETED && runparams.inDisplayMath
+           && !dvipost) {
+               if (os.lastChar() == '\n')
+                       str += from_ascii("\\\\\\noindent\n");
+               else
+                       str += from_ascii("\\\\\\\\\n");
        }
 
+       os << str;
+       column += str.size();
+
        return column;
 }
 
 
-void Changes::lyxMarkChange(ostream & os, int & column,
+void Changes::lyxMarkChange(ostream & os, BufferParams const & bparams, int & column,
                            Change const & old, Change const & change)
 {
        if (old == change)
@@ -355,79 +449,131 @@ void Changes::lyxMarkChange(ostream & os, int & column,
 
        column = 0;
 
+       int const buffer_id = bparams.authors().get(change.author).bufferId();
+
        switch (change.type) {
                case Change::UNCHANGED:
                        os << "\n\\change_unchanged\n";
                        break;
 
-               case Change::DELETED: {
-                       os << "\n\\change_deleted " << change.author
+               case Change::DELETED:
+                       os << "\n\\change_deleted " << buffer_id
                                << " " << change.changetime << "\n";
                        break;
-               }
 
-               case Change::INSERTED: {
-                       os << "\n\\change_inserted " << change.author
+               case Change::INSERTED:
+                       os << "\n\\change_inserted " << buffer_id
                                << " " << change.changetime << "\n";
                        break;
-               }
        }
 }
 
 
 void Changes::checkAuthors(AuthorList const & authorList)
 {
-       ChangeTable::const_iterator it = table_.begin();
-       ChangeTable::const_iterator endit = table_.end();
-       for ( ; it != endit ; ++it) 
-               if (it->change.type != Change::UNCHANGED)
-                       authorList.get(it->change.author).setUsed(true);
+       for (ChangeRange const & cr : table_)
+               if (cr.change.type != Change::UNCHANGED)
+                       authorList.get(cr.change.author).setUsed(true);
 }
 
 
-void Changes::addToToc(DocIterator const & cdit, Buffer const & buffer) const
+void Changes::addToToc(DocIterator const & cdit, Buffer const & buffer,
+                       bool output_active, TocBackend & backend) const
 {
        if (table_.empty())
                return;
 
-       Toc & change_list = buffer.tocBackend().toc("change");
+       shared_ptr<Toc> change_list = backend.toc("change");
        AuthorList const & author_list = buffer.params().authors();
        DocIterator dit = cdit;
 
-       ChangeTable::const_iterator it = table_.begin();
-       ChangeTable::const_iterator const itend = table_.end();
-       for (; it != itend; ++it) {
+       for (ChangeRange const & cr : table_) {
                docstring str;
-               switch (it->change.type) {
+               switch (cr.change.type) {
                case Change::UNCHANGED:
                        continue;
                case Change::DELETED:
-                       // 0x2702 is a scissors symbol in the Dingbats unicode group.
+                       // ✂ U+2702 BLACK SCISSORS
                        str.push_back(0x2702);
                        break;
                case Change::INSERTED:
-                       // 0x2702 is the hand writting symbol in the Dingbats unicode group.
+                       // ✍ U+270D WRITING HAND
                        str.push_back(0x270d);
                        break;
                }
-               dit.pos() = it->range.start;
+               dit.pos() = cr.range.start;
                Paragraph const & par = dit.paragraph();
-               str += " " + par.asString(it->range.start, max(par.size(), it->range.end));
-               // FIXME: find an unicode character for carriage return presentation if
-               // present; i.e. when it->range.end > par.size()
-               docstring const & author = author_list.get(it->change.author).name();
-               Toc::iterator it = change_list.item(0, author);
-               if (it == change_list.end()) {
-                       change_list.push_back(TocItem(dit, 0, author));
-                       change_list.push_back(TocItem(dit, 1, str));
+               str += " " + par.asString(cr.range.start, min(par.size(), cr.range.end));
+               if (cr.range.end > par.size())
+                       // ¶ U+00B6 PILCROW SIGN
+                       str.push_back(0xb6);
+               docstring const & author = author_list.get(cr.change.author).name();
+               Toc::iterator it = TocBackend::findItem(*change_list, 0, author);
+               if (it == change_list->end()) {
+                       change_list->push_back(TocItem(dit, 0, author, true));
+                       change_list->push_back(TocItem(dit, 1, str, output_active));
                        continue;
                }
-               for (++it; it != change_list.end(); ++it) {
+               for (++it; it != change_list->end(); ++it) {
                        if (it->depth() == 0 && it->str() != author)
                                break;
                }
-               change_list.insert(it, TocItem(dit, 1, str));
+               change_list->insert(it, TocItem(dit, 1, str, output_active));
+       }
+}
+
+
+void Changes::updateBuffer(Buffer const & buf)
+{
+       bool const changed = isChanged();
+       buf.setChangesPresent(buf.areChangesPresent() || changed);
+       previously_changed_ = changed;
+}
+
+
+void Change::paintCue(PainterInfo & pi, double const x1, double const y,
+                      double const x2, FontInfo const & font) const
+{
+       if (!changed())
+               return;
+       // Calculate 1/3 height of font
+       FontMetrics const & fm = theFontMetrics(font);
+       double const y_bar = deleted() ? y - fm.maxAscent() / 3
+               : y + 2 * pi.base.solidLineOffset() + pi.base.solidLineThickness();
+       pi.pain.line(int(x1), int(y_bar), int(x2), int(y_bar), color(),
+                    Painter::line_solid, pi.base.solidLineThickness());
+}
+
+
+void Change::paintCue(PainterInfo & pi, double const x1, double const y1,
+                      double const x2, double const y2) const
+{
+       /*
+        * y1      /
+        *        /
+        *       /
+        *      /
+        *     /
+        * y2 /_____
+        *    x1  x2
+        */
+       switch(type) {
+       case UNCHANGED:
+               return;
+       case INSERTED:
+               pi.pain.line(int(x1), int(y2) + 1, int(x2), int(y2) + 1,
+                            color(), Painter::line_solid,
+                            pi.base.solidLineThickness());
+               return;
+       case DELETED:
+               // FIXME: we cannot use antialias since we keep drawing on the same
+               // background with the current painting mechanism.
+               pi.pain.line(int(x1), int(y2), int(x2), int(y1),
+                            color(), Painter::line_solid_aliased,
+                            pi.base.solidLineThickness());
+               return;
        }
 }
 
+
 } // namespace lyx