]> git.lyx.org Git - lyx.git/blobdiff - src/text.C
namespace grfx -> lyx::graphics
[lyx.git] / src / text.C
index ad6f97d3ab9b36fb0d1da8d30c26dfd401a7def0..8e68a70a32f797702cf157a8266ab2fa36d220dd 100644 (file)
@@ -30,6 +30,7 @@
 #include "language.h"
 #include "ParagraphParameters.h"
 #include "undo_funcs.h"
+#include "text_funcs.h"
 #include "WordLangTuple.h"
 #include "paragraph_funcs.h"
 #include "rowpainter.h"
 
 #include <algorithm>
 
+using namespace lyx::support;
+
 using std::max;
 using std::min;
 using std::endl;
 using std::pair;
+
 using lyx::pos_type;
+using lyx::word_location;
+
 using namespace bv_funcs;
 
 /// top, right, bottom pixel margin
@@ -62,14 +68,14 @@ extern int bibitemMaxWidth(BufferView *, LyXFont const &);
 
 BufferView * LyXText::bv()
 {
-       lyx::Assert(bv_owner != 0);
+       Assert(bv_owner != 0);
        return bv_owner;
 }
 
 
 BufferView * LyXText::bv() const
 {
-       lyx::Assert(bv_owner != 0);
+       Assert(bv_owner != 0);
        return bv_owner;
 }
 
@@ -87,16 +93,24 @@ void LyXText::updateRowPositions()
 
 int LyXText::top_y() const
 {
-       if (isInInset() || anchor_row_ == rowlist_.end() )
+       if (anchor_row_ == rowlist_.end())
                return 0;
+
        return anchor_row_->y() + anchor_row_offset_;
 }
 
 
 void LyXText::top_y(int newy)
 {
-       if (rows().empty() || isInInset())
+       if (rows().empty())
                return;
+
+       if (isInInset()) {
+               anchor_row_ = rows().begin();
+               anchor_row_offset_ = newy;
+               return;
+       }
+
        lyxerr[Debug::GUI] << "setting top y = " << newy << endl;
 
        int y = newy;
@@ -137,13 +151,15 @@ int LyXText::workWidth() const
 }
 
 
-int LyXText::workWidth(Inset * inset) const
+int LyXText::workWidth(Inset const * inset) const
 {
-       Paragraph * par = inset->parOwner();
-       lyx::Assert(par);
+       ParagraphList::iterator par = std::find(ownerParagraphs().begin(),
+                                               ownerParagraphs().end(),
+                                               *inset->parOwner());
+       //Assert(par);
 
        pos_type pos = par->getPositionOfInset(inset);
-       lyx::Assert(pos != -1);
+       Assert(pos != -1);
 
        LyXLayout_ptr const & layout = par->layout();
 
@@ -760,8 +776,7 @@ pos_type addressBreakPoint(pos_type i, Paragraph const & par)
 };
 
 
-pos_type
-LyXText::rowBreakPoint(Row const & row) const
+pos_type LyXText::rowBreakPoint(Row const & row) const
 {
        ParagraphList::iterator pit = row.par();
 
@@ -790,7 +805,7 @@ LyXText::rowBreakPoint(Row const & row) const
        // or the end of the par, then choose the possible break
        // nearest that.
 
-       int const left = leftMargin(const_cast<Row&>(row));
+       int const left = leftMargin(row);
        int x = left;
 
        // pixel width since last breakpoint
@@ -962,7 +977,7 @@ int LyXText::labelFill(Row const & row) const
 
        pos_type last = pit->beginningOfBody();
 
-       lyx::Assert(last > 0);
+       Assert(last > 0);
 
        // -1 because a label ends either with a space that is in the label,
        // or with the beginning of a footnote that is outside the label.
@@ -1002,7 +1017,7 @@ LColor::color LyXText::backgroundColor() const
 
 void LyXText::setHeightOfRow(RowList::iterator rit)
 {
-       lyx::Assert(rit != rows().end());
+       Assert(rit != rows().end());
 
        // get the maximum ascent and the maximum descent
        float layoutasc = 0;
@@ -1314,7 +1329,7 @@ void LyXText::setHeightOfRow(RowList::iterator rit)
 // start at the implicit given position
 void LyXText::appendParagraph(RowList::iterator rowit)
 {
-       lyx::Assert(rowit != rowlist_.end());
+       Assert(rowit != rowlist_.end());
 
        pos_type const last = rowit->par()->size();
        bool done = false;
@@ -1344,7 +1359,7 @@ void LyXText::appendParagraph(RowList::iterator rowit)
 
 void LyXText::breakAgain(RowList::iterator rit)
 {
-       lyx::Assert(rit != rows().end());
+       Assert(rit != rows().end());
 
        bool not_ready = true;
 
@@ -1397,7 +1412,7 @@ void LyXText::breakAgain(RowList::iterator rit)
 // this is just a little changed version of break again
 void LyXText::breakAgainOneRow(RowList::iterator rit)
 {
-       lyx::Assert(rit != rows().end());
+       Assert(rit != rows().end());
 
        pos_type z = rowBreakPoint(*rit);
        RowList::iterator tmprit = rit;
@@ -1451,13 +1466,12 @@ void LyXText::breakParagraph(ParagraphList & paragraphs, char keep_layout)
        LyXLayout_ptr const & layout = cursor.par()->layout();
 
        // this is only allowed, if the current paragraph is not empty or caption
-       // and if it has not the keepempty flag aktive
-       if (cursor.par()->empty()
-          && layout->labeltype != LABEL_SENSITIVE
-          && !layout->keepempty)
+       // and if it has not the keepempty flag active
+       if (cursor.par()->empty() && !cursor.par()->allowEmpty()
+          && layout->labeltype != LABEL_SENSITIVE)
                return;
 
-       setUndo(bv(), Undo::FINISH, cursor.par(), boost::next(cursor.par()));
+       setUndo(bv(), Undo::FINISH, cursor.par());
 
        // Always break behind a space
        //
@@ -1477,7 +1491,7 @@ void LyXText::breakParagraph(ParagraphList & paragraphs, char keep_layout)
        // breakParagraph call should return a bool if it inserts the
        // paragraph before or behind and we should react on that one
        // but we can fix this in 1.3.0 (Jug 20020509)
-       bool const isempty = (layout->keepempty && cursor.par()->empty());
+       bool const isempty = (cursor.par()->allowEmpty() && cursor.par()->empty());
        ::breakParagraph(bv()->buffer()->params, paragraphs, cursor.par(), cursor.pos(),
                       keep_layout);
 
@@ -1495,17 +1509,17 @@ void LyXText::breakParagraph(ParagraphList & paragraphs, char keep_layout)
        // move one row up!
        // This touches only the screen-update. Otherwise we would may have
        // an empty row on the screen
-       if (cursor.pos() && cursor.row()->pos() == cursor.pos()
-           && !cursor.row()->par()->isNewline(cursor.pos() - 1))
+       if (cursor.pos() && cursorRow()->pos() == cursor.pos()
+           && !cursorRow()->par()->isNewline(cursor.pos() - 1))
        {
                cursorLeft(bv());
        }
 
-       int y = cursor.y() - cursor.row()->baseline();
+       int y = cursor.y() - cursorRow()->baseline();
 
        // Do not forget the special right address boxes
        if (layout->margintype == MARGIN_RIGHT_ADDRESS_BOX) {
-               RowList::iterator r = cursor.row();
+               RowList::iterator r = cursorRow();
                RowList::iterator beg = rows().begin();
 
                while (r != beg && boost::prior(r)->par() == r->par()) {
@@ -1516,12 +1530,12 @@ void LyXText::breakParagraph(ParagraphList & paragraphs, char keep_layout)
 
        postPaint(y);
 
-       removeParagraph(cursor.row());
+       removeParagraph(cursorRow());
 
        // set the dimensions of the cursor row
-       cursor.row()->fill(fill(cursor.row(), workWidth()));
+       cursorRow()->fill(fill(cursorRow(), workWidth()));
 
-       setHeightOfRow(cursor.row());
+       setHeightOfRow(cursorRow());
 
 #warning Trouble Point! (Lgb)
        // When ::breakParagraph is called from within an inset we must
@@ -1532,7 +1546,7 @@ void LyXText::breakParagraph(ParagraphList & paragraphs, char keep_layout)
        while (!next_par->empty() && next_par->isNewline(0))
                next_par->erase(0);
 
-       insertParagraph(next_par, boost::next(cursor.row()));
+       insertParagraph(next_par, boost::next(cursorRow()));
        updateCounters();
 
        // This check is necessary. Otherwise the new empty paragraph will
@@ -1542,8 +1556,8 @@ void LyXText::breakParagraph(ParagraphList & paragraphs, char keep_layout)
        else
                setCursor(cursor.par(), 0);
 
-       if (boost::next(cursor.row()) != rows().end())
-               breakAgain(boost::next(cursor.row()));
+       if (boost::next(cursorRow()) != rows().end())
+               breakAgain(boost::next(cursorRow()));
 
        need_break_row = rows().end();
 }
@@ -1562,13 +1576,13 @@ void LyXText::redoParagraph()
 // same Paragraph one to the right and make a rebreak
 void LyXText::insertChar(char c)
 {
-       setUndo(bv(), Undo::INSERT, cursor.par(), boost::next(cursor.par()));
+       setUndo(bv(), Undo::INSERT, cursor.par());
 
        // When the free-spacing option is set for the current layout,
        // disable the double-space checking
 
-       bool const freeSpacing = cursor.row()->par()->layout()->free_spacing ||
-               cursor.row()->par()->isFreeSpacing();
+       bool const freeSpacing = cursorRow()->par()->layout()->free_spacing ||
+               cursorRow()->par()->isFreeSpacing();
 
        if (lyxrc.auto_number) {
                static string const number_operators = "+-/*";
@@ -1662,17 +1676,17 @@ void LyXText::insertChar(char c)
        }
 
        // the display inset stuff
-       if (cursor.row()->pos() < cursor.row()->par()->size()
-           && cursor.row()->par()->isInset(cursor.row()->pos())) {
-               Inset * inset = cursor.row()->par()->getInset(cursor.row()->pos());
+       if (cursorRow()->pos() < cursorRow()->par()->size()
+           && cursorRow()->par()->isInset(cursorRow()->pos())) {
+               Inset * inset = cursorRow()->par()->getInset(cursorRow()->pos());
                if (inset && (inset->display() || inset->needFullRow())) {
                        // force a new break
-                       cursor.row()->fill(-1); // to force a new break
+                       cursorRow()->fill(-1); // to force a new break
                }
        }
 
        // get the cursor row fist
-       RowList::iterator row = cursor.row();
+       RowList::iterator row = cursorRow();
        int y = cursor.y() - row->baseline();
        if (c != Paragraph::META_INSET) {
                // Here case LyXText::InsertInset  already insertet the character
@@ -1697,7 +1711,7 @@ void LyXText::insertChar(char c)
                || cursor.par()->isNewline(cursor.pos())
                || ((cursor.pos() + 1 < cursor.par()->size()) &&
                    cursor.par()->isInset(cursor.pos() + 1))
-               || cursor.row()->fill() == -1))
+               || cursorRow()->fill() == -1))
        {
                pos_type z = rowBreakPoint(*boost::prior(row));
 
@@ -1723,9 +1737,10 @@ void LyXText::insertChar(char c)
                                  false, cursor.boundary());
                        // cursor MUST be in row now.
 
-                       if (boost::next(row) != rows().end() &&
-                           boost::next(row)->par() == row->par())
-                               need_break_row = boost::next(row);
+                       RowList::iterator next_row = boost::next(row);
+                       if (next_row != rows().end() &&
+                           next_row->par() == row->par())
+                               need_break_row = next_row;
                        else
                                need_break_row = rows().end();
 
@@ -1749,13 +1764,18 @@ void LyXText::insertChar(char c)
        if (c == Paragraph::META_INSET || row->fill() < 0) {
                postPaint(y);
                breakAgainOneRow(row);
+
+               RowList::iterator next_row = boost::next(row);
+
                // will the cursor be in another row now?
                if (lastPos(*this, row) <= cursor.pos() + 1 &&
-                   boost::next(row) != rows().end()) {
-                       if (boost::next(row) != rows().end() &&
-                           boost::next(row)->par() == row->par())
+                   next_row != rows().end()) {
+                       if (next_row != rows().end() &&
+                           next_row->par() == row->par()) {
                                // this should always be true
                                ++row;
+                       }
+
                        breakAgainOneRow(row);
                }
                current_font = rawtmpfont;
@@ -1767,9 +1787,12 @@ void LyXText::insertChar(char c)
                    != cursor.boundary())
                        setCursor(cursor.par(), cursor.pos(), false,
                          !cursor.boundary());
-               if (boost::next(row) != rows().end() &&
-                   boost::next(row)->par() == row->par())
-                       need_break_row = boost::next(row);
+
+               next_row = boost::next(row);
+
+               if (next_row != rows().end() &&
+                   next_row->par() == row->par())
+                       need_break_row = next_row;
                else
                        need_break_row = rows().end();
        } else {
@@ -1957,27 +1980,8 @@ void LyXText::prepareToPrint(RowList::iterator rit, float & x,
 
 void LyXText::cursorRightOneWord()
 {
-       // treat floats, HFills and Insets as words
-       ParagraphList::iterator pit = cursor.par();
-       pos_type pos = cursor.pos();
-
-       // CHECK See comment on top of text.C
-
-       if (pos == pit->size()
-           && boost::next(pit) != ownerParagraphs().end()) {
-               ++pit;
-               pos = 0;
-       } else {
-               // Skip through initial nonword stuff.
-               while (pos < pit->size() && !pit->isWord(pos)) {
-                       ++pos;
-               }
-               // Advance through word.
-               while (pos < pit->size() && pit->isWord(pos)) {
-                       ++pos;
-               }
-       }
-       setCursor(pit, pos);
+       ::cursorRightOneWord(cursor, ownerParagraphs());
+       setCursor(cursor.par(), cursor.pos());
 }
 
 
@@ -1986,102 +1990,16 @@ void LyXText::cursorRightOneWord()
 void LyXText::cursorLeftOneWord()
 {
        LyXCursor tmpcursor = cursor;
-       cursorLeftOneWord(tmpcursor);
+       ::cursorLeftOneWord(tmpcursor, ownerParagraphs());
        setCursor(tmpcursor.par(), tmpcursor.pos());
 }
 
 
-void LyXText::cursorLeftOneWord(LyXCursor & cur)
-{
-       // treat HFills, floats and Insets as words
-
-       ParagraphList::iterator pit = cursor.par();
-       pos_type pos = cursor.pos();
-
-       while (pos &&
-              (pit->isSeparator(pos - 1) ||
-               pit->isKomma(pos - 1) ||
-               pit->isNewline(pos - 1)) &&
-              !(pit->isHfill(pos - 1) ||
-                pit->isInset(pos - 1)))
-               --pos;
-
-       if (pos &&
-           (pit->isInset(pos - 1) ||
-            pit->isHfill(pos - 1))) {
-               --pos;
-       } else if (!pos) {
-               if (pit != ownerParagraphs().begin()) {
-                       --pit;
-                       pos = pit->size();
-               }
-       } else {                // Here, cur != 0
-               while (pos > 0 &&
-                      pit->isWord(pos - 1))
-                       --pos;
-       }
-
-       cur.par(pit);
-       cur.pos(pos);
-}
-
-
-// Select current word. This depends on behaviour of
-// CursorLeftOneWord(), so it is patched as well.
-void LyXText::getWord(LyXCursor & from, LyXCursor & to,
-                     word_location const loc)
-{
-       // first put the cursor where we wana start to select the word
-       from = cursor;
-       switch (loc) {
-       case WHOLE_WORD_STRICT:
-               if (cursor.pos() == 0 || cursor.pos() == cursor.par()->size()
-                   || cursor.par()->isSeparator(cursor.pos())
-                   || cursor.par()->isKomma(cursor.pos())
-                   || cursor.par()->isNewline(cursor.pos())
-                   || cursor.par()->isSeparator(cursor.pos() - 1)
-                   || cursor.par()->isKomma(cursor.pos() - 1)
-                   || cursor.par()->isNewline(cursor.pos() - 1)) {
-                       to = from;
-                       return;
-               }
-               // no break here, we go to the next
-
-       case WHOLE_WORD:
-               // Move cursor to the beginning, when not already there.
-               if (from.pos() && !from.par()->isSeparator(from.pos() - 1)
-                   && !(from.par()->isKomma(from.pos() - 1)
-                        || from.par()->isNewline(from.pos() - 1)))
-                       cursorLeftOneWord(from);
-               break;
-       case PREVIOUS_WORD:
-               // always move the cursor to the beginning of previous word
-               cursorLeftOneWord(from);
-               break;
-       case NEXT_WORD:
-               lyxerr << "LyXText::getWord: NEXT_WORD not implemented yet\n";
-               break;
-       case PARTIAL_WORD:
-               break;
-       }
-       to = from;
-       while (to.pos() < to.par()->size()
-              && !to.par()->isSeparator(to.pos())
-              && !to.par()->isKomma(to.pos())
-              && !to.par()->isNewline(to.pos())
-              && !to.par()->isHfill(to.pos())
-              && !to.par()->isInset(to.pos()))
-       {
-               to.pos(to.pos() + 1);
-       }
-}
-
-
 void LyXText::selectWord(word_location loc)
 {
-       LyXCursor from;
+       LyXCursor from = cursor;
        LyXCursor to;
-       getWord(from, to, loc);
+       ::getWord(from, to, loc, ownerParagraphs());
        if (cursor != from)
                setCursor(from.par(), from.pos());
        if (to == from)
@@ -2109,12 +2027,10 @@ void LyXText::acceptChange()
        if (!selection.set() && cursor.par()->size())
                return;
 
-       bv()->hideCursor();
-
        if (selection.start.par() == selection.end.par()) {
                LyXCursor & startc = selection.start;
                LyXCursor & endc = selection.end;
-               setUndo(bv(), Undo::INSERT, startc.par(), boost::next(startc.par()));
+               setUndo(bv(), Undo::INSERT, startc.par());
                startc.par()->acceptChange(startc.pos(), endc.pos());
                finishUndo();
                clearSelection();
@@ -2130,13 +2046,10 @@ void LyXText::rejectChange()
        if (!selection.set() && cursor.par()->size())
                return;
 
-       bv()->hideCursor();
-
        if (selection.start.par() == selection.end.par()) {
                LyXCursor & startc = selection.start;
                LyXCursor & endc = selection.end;
-               setUndo(bv(), Undo::INSERT, startc.par(),
-                       boost::next(startc.par()));
+               setUndo(bv(), Undo::INSERT, startc.par());
                startc.par()->rejectChange(startc.pos(), endc.pos());
                finishUndo();
                clearSelection();
@@ -2207,7 +2120,8 @@ LyXText::selectNextWordToSpellcheck(float & value)
        if (cursor.pos() < cursor.par()->size() &&
            cursor.par()->isInset(cursor.pos())) {
                // lock the inset!
-               cursor.par()->getInset(cursor.pos())->edit(bv());
+               FuncRequest cmd(bv(), LFUN_INSET_EDIT, "left");
+               cursor.par()->getInset(cursor.pos())->localDispatch(cmd);
                // now call us again to do the above trick
                // but obviously we have to start from down below ;)
                return bv()->text->selectNextWordToSpellcheck(value);
@@ -2277,7 +2191,6 @@ void LyXText::deleteWordForward()
                cursorRight(bv());
        else {
                LyXCursor tmpcursor = cursor;
-               tmpcursor.row(0); // ??
                selection.set(true); // to avoid deletion
                cursorRightOneWord();
                setCursor(tmpcursor, tmpcursor.par(), tmpcursor.pos());
@@ -2298,7 +2211,6 @@ void LyXText::deleteWordBackward()
                cursorLeft(bv());
        else {
                LyXCursor tmpcursor = cursor;
-               tmpcursor.row(0); // ??
                selection.set(true); // to avoid deletion
                cursorLeftOneWord();
                setCursor(tmpcursor, tmpcursor.par(), tmpcursor.pos());
@@ -2320,7 +2232,6 @@ void LyXText::deleteLineForward()
                LyXCursor tmpcursor = cursor;
                // We can't store the row over a regular setCursor
                // so we set it to 0 and reset it afterwards.
-               tmpcursor.row(0); // ??
                selection.set(true); // to avoid deletion
                cursorEnd();
                setCursor(tmpcursor, tmpcursor.par(), tmpcursor.pos());
@@ -2346,13 +2257,12 @@ void LyXText::changeCase(LyXText::TextCase action)
                from = selection.start;
                to = selection.end;
        } else {
-               getWord(from, to, PARTIAL_WORD);
+               from = cursor;
+               ::getWord(from, to, lyx::PARTIAL_WORD, ownerParagraphs());
                setCursor(to.par(), to.pos() + 1);
        }
 
-       lyx::Assert(from <= to);
-
-       setUndo(bv(), Undo::FINISH, from.par(), boost::next(to.par()));
+       setUndo(bv(), Undo::FINISH, from.par(), to.par());
 
        pos_type pos = from.pos();
        ParagraphList::iterator pit = from.par();
@@ -2386,8 +2296,8 @@ void LyXText::changeCase(LyXText::TextCase action)
                ++pos;
        }
 
-       if (to.row() != from.row())
-               postPaint(from.y() - from.row()->baseline());
+       if (getRow(to) != getRow(from))
+               postPaint(from.y() - getRow(from)->baseline());
 }
 
 
@@ -2422,8 +2332,7 @@ void LyXText::Delete()
                LyXCursor tmpcursor = cursor;
                // to make sure undo gets the right cursor position
                cursor = old_cursor;
-               setUndo(bv(), Undo::DELETE,
-                       cursor.par(), boost::next(cursor.par()));
+               setUndo(bv(), Undo::DELETE, cursor.par());
                cursor = tmpcursor;
                backspace();
        }
@@ -2470,10 +2379,10 @@ void LyXText::backspace()
                                cursorLeft(bv());
 
                                // the layout things can change the height of a row !
-                               int const tmpheight = cursor.row()->height();
-                               setHeightOfRow(cursor.row());
-                               if (cursor.row()->height() != tmpheight) {
-                                       postPaint(cursor.y() - cursor.row()->baseline());
+                               int const tmpheight = cursorRow()->height();
+                               setHeightOfRow(cursorRow());
+                               if (cursorRow()->height() != tmpheight) {
+                                       postPaint(cursor.y() - cursorRow()->baseline());
                                }
                                return;
                        }
@@ -2482,11 +2391,11 @@ void LyXText::backspace()
                if (cursor.par() != ownerParagraphs().begin()) {
                        setUndo(bv(), Undo::DELETE,
                                boost::prior(cursor.par()),
-                               boost::next(cursor.par()));
+                               cursor.par());
                }
 
                ParagraphList::iterator tmppit = cursor.par();
-               RowList::iterator tmprow = cursor.row();
+               RowList::iterator tmprow = cursorRow();
 
                // We used to do cursorLeftIntern() here, but it is
                // not a good idea since it triggers the auto-delete
@@ -2528,7 +2437,7 @@ void LyXText::backspace()
                                if (cursor.pos())
                                        cursor.pos(cursor.pos() - 1);
 
-                       postPaint(cursor.y() - cursor.row()->baseline());
+                       postPaint(cursor.y() - cursorRow()->baseline());
 
                        // remove the lost paragraph
                        // This one is not safe, since the paragraph that the tmprow and the
@@ -2539,7 +2448,7 @@ void LyXText::backspace()
                        //RemoveRow(tmprow);
 
                        // This rebuilds the rows.
-                       appendParagraph(cursor.row());
+                       appendParagraph(cursorRow());
                        updateCounters();
 
                        // the row may have changed, block, hfills etc.
@@ -2548,8 +2457,7 @@ void LyXText::backspace()
        } else {
                // this is the code for a normal backspace, not pasting
                // any paragraphs
-               setUndo(bv(), Undo::DELETE,
-                       cursor.par(), boost::next(cursor.par()));
+               setUndo(bv(), Undo::DELETE, cursor.par());
                // 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,
@@ -2568,7 +2476,7 @@ void LyXText::backspace()
                        }
                }
 
-               RowList::iterator row = cursor.row();
+               RowList::iterator row = cursorRow();
                int y = cursor.y() - row->baseline();
                pos_type z;
                // remember that a space at the end of a row doesnt count
@@ -2747,6 +2655,42 @@ void LyXText::backspace()
 }
 
 
+RowList::iterator LyXText::cursorRow() const
+{
+       return getRow(cursor.par(), cursor.pos());
+}
+
+
+RowList::iterator LyXText::getRow(LyXCursor const & cur) const
+{
+       return getRow(cur.par(), cur.pos());
+}
+
+
+RowList::iterator
+LyXText::getRow(ParagraphList::iterator pit, pos_type pos) const
+{
+       if (rows().empty())
+               return rowlist_.end();
+
+       // find the first row of the specified paragraph
+       RowList::iterator rit = rowlist_.begin();
+       RowList::iterator end = rowlist_.end();
+       while (boost::next(rit) != end && rit->par() != pit) {
+               ++rit;
+       }
+
+       // now find the wanted row
+       while (rit->pos() < pos
+              && boost::next(rit) != end
+              && boost::next(rit)->par() == pit
+              && boost::next(rit)->pos() <= pos) {
+               ++rit;
+       }
+
+       return rit;
+}
+
 // returns pointer to a specified row
 RowList::iterator
 LyXText::getRow(ParagraphList::iterator pit, pos_type pos, int & y) const