]> git.lyx.org Git - lyx.git/blobdiff - src/TextMetrics.cpp
Merge branch 'master' of git.lyx.org:lyx
[lyx.git] / src / TextMetrics.cpp
index 12a42e2d99d8e0517d82119112c921844dc4ef15..b40cb5553010a2d298a2842b5d5ae7d1236a2dad 100644 (file)
 #include "CutAndPaste.h"
 #include "HSpace.h"
 #include "InsetList.h"
+#include "Language.h"
 #include "Layout.h"
 #include "LyXRC.h"
 #include "MetricsInfo.h"
 #include "ParagraphParameters.h"
-#include "rowpainter.h"
+#include "RowPainter.h"
 #include "Text.h"
 #include "TextClass.h"
 #include "VSpace.h"
@@ -58,28 +59,6 @@ using frontend::FontMetrics;
 
 namespace {
 
-int numberOfSeparators(Row const & row)
-{
-       int n = 0;
-       Row::const_iterator cit = row.begin();
-       Row::const_iterator const end = row.end();
-       for ( ; cit != end ; ++cit)
-               if (cit->type == Row::SEPARATOR)
-                       ++n;
-       return n;
-}
-
-
-void setSeparatorWidth(Row & row, double w)
-{
-       row.separator = w;
-       Row::iterator it = row.begin();
-       Row::iterator const end = row.end();
-       for ( ; it != end ; ++it)
-               if (it->type == Row::SEPARATOR)
-                       it->extra = w;
-}
-
 
 int numberOfLabelHfills(Paragraph const & par, Row const & row)
 {
@@ -101,15 +80,18 @@ int numberOfLabelHfills(Paragraph const & par, Row const & row)
        return n;
 }
 
-
-int numberOfHfills(Row const & row, pos_type const body_pos)
+// FIXME: this needs to be rewritten, probably by merging it into some
+// code that, besides counting, sets the active status of the space
+// inset in the row element.
+int numberOfHfills(Row const & row, ParagraphMetrics const & pm,
+                   pos_type const body_pos)
 {
        int n = 0;
        Row::const_iterator cit = row.begin();
        Row::const_iterator const end = row.end();
        for ( ; cit != end ; ++cit)
                if (cit->pos >= body_pos
-                   && cit->inset && cit->inset->isHfill())
+                   && cit->inset && pm.hfillExpansion(row, cit->pos))
                        ++n;
        return n;
 }
@@ -218,13 +200,13 @@ bool TextMetrics::metrics(MetricsInfo & mi, Dimension & dim, int min_width)
 
 int TextMetrics::rightMargin(ParagraphMetrics const & pm) const
 {
-       return main_text_? pm.rightMargin(*bv_) : 0;
+       return text_->isMainText() ? pm.rightMargin(*bv_) : 0;
 }
 
 
 int TextMetrics::rightMargin(pit_type const pit) const
 {
-       return main_text_? par_metrics_[pit].rightMargin(*bv_) : 0;
+       return text_->isMainText() ? par_metrics_[pit].rightMargin(*bv_) : 0;
 }
 
 
@@ -290,7 +272,7 @@ Font TextMetrics::displayFont(pit_type pit, pos_type pos) const
 
 bool TextMetrics::isRTL(CursorSlice const & sl, bool boundary) const
 {
-       if (!lyxrc.rtl_support || !sl.text())
+       if (!sl.text())
                return false;
 
        int correction = 0;
@@ -304,7 +286,7 @@ bool TextMetrics::isRTL(CursorSlice const & sl, bool boundary) const
 bool TextMetrics::isRTLBoundary(pit_type pit, pos_type pos) const
 {
        // no RTL boundary at paragraph start
-       if (!lyxrc.rtl_support || pos == 0)
+       if (pos == 0)
                return false;
 
        Font const & left_font = displayFont(pit, pos - 1);
@@ -319,9 +301,8 @@ bool TextMetrics::isRTLBoundary(pit_type pit, pos_type pos) const
 bool TextMetrics::isRTLBoundary(pit_type pit, pos_type pos,
                Font const & font) const
 {
-       if (!lyxrc.rtl_support
-           // no RTL boundary at paragraph start
-           || pos == 0
+       if (// no RTL boundary at paragraph start
+           pos == 0
            // if the metrics have not been calculated, then we are not
            // on screen and can safely ignore issues about boundaries.
            || !contains(pit))
@@ -346,6 +327,7 @@ bool TextMetrics::isRTLBoundary(pit_type pit, pos_type pos,
        // FED                          FED|                     FED     )
        if (startpos == pos && endpos == pos && endpos != par.size()
                && (par.isNewline(pos - 1)
+                       || par.isEnvSeparator(pos - 1)
                        || par.isLineSeparator(pos - 1)
                        || par.isSeparator(pos - 1)))
                return false;
@@ -371,7 +353,6 @@ bool TextMetrics::redoParagraph(pit_type const pit)
        pm.reset(par);
 
        Buffer & buffer = bv_->buffer();
-       main_text_ = (text_ == &buffer.text());
        bool changed = false;
 
        // Check whether there are InsetBibItems that need fixing
@@ -385,7 +366,7 @@ bool TextMetrics::redoParagraph(pit_type const pit)
                Cursor & cur = const_cast<Cursor &>(bv_->cursor());
                // In some cases, we do not know how to record undo
                if (&cur.inset() == &text_->inset())
-                       cur.recordUndo(ATOMIC_UNDO, pit, pit);
+                       cur.recordUndo(pit, pit);
 
                int const moveCursor = par.fixBiblio(buffer);
 
@@ -421,6 +402,7 @@ bool TextMetrics::redoParagraph(pit_type const pit)
 
        // redo insets
        Font const bufferfont = buffer.params().getFont();
+       CoordCache::Insets & insetCache = bv_->coordCache().insets();
        InsetList::const_iterator ii = par.insetList().begin();
        InsetList::const_iterator iend = par.insetList().end();
        for (; ii != iend; ++ii) {
@@ -446,9 +428,8 @@ bool TextMetrics::redoParagraph(pit_type const pit)
                MacroContext mc(&buffer, parPos);
                MetricsInfo mi(bv_, font.fontInfo(), w, mc);
                ii->inset->metrics(mi, dim);
-               Dimension const old_dim = pm.insetDimension(ii->inset);
-               if (old_dim != dim) {
-                       pm.setInsetDimension(ii->inset, dim);
+               if (!insetCache.has(ii->inset) || insetCache.dim(ii->inset) != dim) {
+                       insetCache.add(ii->inset, dim);
                        changed = true;
                }
        }
@@ -456,47 +437,71 @@ bool TextMetrics::redoParagraph(pit_type const pit)
        par.setBeginOfBody();
        pos_type first = 0;
        size_t row_index = 0;
+       bool need_new_row = false;
        // maximum pixel width of a row
        do {
                if (row_index == pm.rows().size())
                        pm.rows().push_back(Row());
                Row & row = pm.rows()[row_index];
+               row.pit(pit);
                row.pos(first);
-               breakRow(row, right_margin, pit);
-               setRowHeight(row, pit);
+               row.pit(pit);
+               need_new_row = breakRow(row, right_margin);
+               setRowHeight(row);
                row.setChanged(false);
-               if (row_index || row.endpos() < par.size())
-                       // If there is more than one row, expand the text to
-                       // the full allowable width. This setting here is needed
-                       // for the computeRowMetrics() below.
-                       dim_.wid = max_width_;
+               if (row_index || row.endpos() < par.size()
+                   || (row.right_boundary() && par.inInset().lyxCode() != CELL_CODE)) {
+                       /* If there is more than one row or the row has been
+                        * broken by a display inset or a newline, expand the text
+                        * to the full allowable width. This setting here is
+                        * needed for the computeRowMetrics() below. In the case
+                        * of a display inset, we do nothing when inside a table
+                        * cell, because the tabular code is not prepared for
+                        * that, and it triggers when using a caption in a
+                        * longtable (see bugs #9945 and #9757).
+                        */
+                       if (dim_.wid < max_width_)
+                               dim_.wid = max_width_;
+               }
                int const max_row_width = max(dim_.wid, row.width());
-               computeRowMetrics(pit, row, max_row_width);
+               computeRowMetrics(row, max_row_width);
                first = row.endpos();
                ++row_index;
 
                pm.dim().wid = max(pm.dim().wid, row.width());
                pm.dim().des += row.height();
-       } while (first < par.size());
+       } while (first < par.size() || need_new_row);
 
        if (row_index < pm.rows().size())
                pm.rows().resize(row_index);
 
-       // Make sure that if a par ends in newline, there is one more row
-       // under it
-       if (first > 0 && par.isNewline(first - 1)) {
-               if (row_index == pm.rows().size())
-                       pm.rows().push_back(Row());
-               Row & row = pm.rows()[row_index];
-               row.pos(first);
-               row.endpos(first);
-               setRowHeight(row, pit);
-               row.setChanged(false);
-               int const max_row_width = max(dim_.wid, row.width());
-               computeRowMetrics(pit, row, max_row_width);
-               pm.dim().des += row.height();
+       // FIXME: It might be better to move this in another method
+       // specially tailored for the main text.
+       // Top and bottom margin of the document (only at top-level)
+       if (text_->isMainText()) {
+               if (pit == 0) {
+                       pm.rows().front().dimension().asc += 20;
+                       /* coverity[copy_paste_error]: coverity thinks that we
+                        * should update pm.dim().asc below, but all the rows
+                        * heights are actually counted as part of the paragraph metric
+                        * descent see loop above).
+                        */
+                       pm.dim().des += 20;
+               }
+               ParagraphList const & pars = text_->paragraphs();
+               if (pit + 1 == pit_type(pars.size())) {
+                       pm.rows().back().dimension().des += 20;
+                       pm.dim().des += 20;
+               }
        }
 
+       // The space above and below the paragraph.
+       int const top = parTopSpacing(pit);
+       pm.rows().front().dimension().asc += top;
+       int const bottom = parBottomSpacing(pit);
+       pm.rows().back().dimension().des += bottom;
+       pm.dim().des += top + bottom;
+
        pm.dim().asc += pm.rows()[0].ascent();
        pm.dim().des -= pm.rows()[0].ascent();
 
@@ -506,11 +511,11 @@ bool TextMetrics::redoParagraph(pit_type const pit)
 }
 
 
-int TextMetrics::getAlign(Paragraph const & par, pos_type const pos) const
+LyXAlignment TextMetrics::getAlign(Paragraph const & par, Row const & row) const
 {
        Layout const & layout = par.layout();
 
-       int align;
+       LyXAlignment align;
        if (par.params().align() == LYX_ALIGN_LAYOUT)
                align = layout.align;
        else
@@ -518,7 +523,14 @@ int TextMetrics::getAlign(Paragraph const & par, pos_type const pos) const
 
        // handle alignment inside tabular cells
        Inset const & owner = text_->inset();
+       bool forced_block = false;
        switch (owner.contentAlignment()) {
+       case LYX_ALIGN_BLOCK:
+               // In general block align is the default state, but here it is
+               // an explicit choice. Therefore it should not be overridden
+               // later.
+               forced_block = true;
+               // fall through
        case LYX_ALIGN_CENTER:
        case LYX_ALIGN_LEFT:
        case LYX_ALIGN_RIGHT:
@@ -531,7 +543,7 @@ int TextMetrics::getAlign(Paragraph const & par, pos_type const pos) const
        }
 
        // Display-style insets should always be on a centered row
-       if (Inset const * inset = par.getInset(pos)) {
+       if (Inset const * inset = par.getInset(row.pos())) {
                switch (inset->display()) {
                case Inset::AlignLeft:
                        align = LYX_ALIGN_BLOCK;
@@ -548,33 +560,33 @@ int TextMetrics::getAlign(Paragraph const & par, pos_type const pos) const
                }
        }
 
-       // Has the user requested we not justify stuff?
-       if (!bv_->buffer().params().justification
-           && align == LYX_ALIGN_BLOCK)
-               align = LYX_ALIGN_LEFT;
+       if (align == LYX_ALIGN_BLOCK) {
+               // If this row has been broken abruptly by a display inset, or
+               // it is the end of the paragraph, or the user requested we
+               // not justify stuff, then don't stretch.
+               // A forced block alignment can only be overridden the 'no
+               // justification on screen' setting.
+               if (((row.right_boundary() || row.endpos() == par.size())
+                    && !forced_block)
+                   || !bv_->buffer().params().justification)
+                       align = text_->isRTL(par) ? LYX_ALIGN_RIGHT : LYX_ALIGN_LEFT;
+       }
 
        return align;
 }
 
 
-void TextMetrics::computeRowMetrics(pit_type const pit,
-               Row & row, int width) const
+void TextMetrics::computeRowMetrics(Row & row, int width) const
 {
        row.label_hfill = 0;
        row.separator = 0;
 
-       Paragraph const & par = text_->getPar(pit);
+       Paragraph const & par = text_->getPar(row.pit());
 
-       double w = width - row.right_margin - row.width();
+       int const w = width - row.right_margin - row.width();
        // FIXME: put back this assertion when the crash on new doc is solved.
        //LASSERT(w >= 0, /**/);
 
-       bool const is_rtl = text_->isRTL(par);
-       if (is_rtl)
-               row.x = rightMargin(pit);
-       else
-               row.x = leftMargin(max_width_, pit, row.pos());
-
        // is there a manual margin with a manual label
        Layout const & layout = par.layout();
 
@@ -593,94 +605,91 @@ void TextMetrics::computeRowMetrics(pit_type const pit,
                        ++nlh;
 
                if (nlh && !par.getLabelWidthString().empty())
-                       row.label_hfill = labelFill(pit, row) / double(nlh);
+                       row.label_hfill = labelFill(row) / double(nlh);
        }
 
-       double hfill = 0;
        // are there any hfills in the row?
-       if (int const nh = numberOfHfills(row, par.beginOfBody())) {
-               if (w > 0)
-                       hfill = w / double(nh);
-       // we don't have to look at the alignment if it is ALIGN_LEFT and
-       // if the row is already larger then the permitted width as then
-       // we force the LEFT_ALIGN'edness!
-       } else if (int(row.width()) < max_width_) {
-               // is it block, flushleft or flushright?
-               // set x how you need it
-               int const align = getAlign(par, row.pos());
-
-               switch (align) {
+       ParagraphMetrics & pm = par_metrics_[row.pit()];
+       int nh = numberOfHfills(row, pm, par.beginOfBody());
+       int hfill = 0;
+       int hfill_rem = 0;
+
+       // We don't have to look at the alignment if the row is already
+       // larger then the permitted width as then we force the
+       // LEFT_ALIGN'edness!
+       if (int(row.width()) >= max_width_)
+               return;
+
+       if (nh == 0) {
+               // Common case : there is no hfill, and the alignment will be
+               // meaningful
+               switch (getAlign(par, row)) {
                case LYX_ALIGN_BLOCK: {
-                       int const ns = numberOfSeparators(row);
-                       /** If we have separators, and this row has
-                        * not be broken abruptly by a display inset
-                        * or newline, then stretch it */
-                       if (ns && !row.right_boundary() 
-                           && row.endpos() != par.size()) {
-                               setSeparatorWidth(row, w / ns);
-                               row.dimension().wid = width;
-                       } else if (is_rtl) {
-                               row.dimension().wid = width;
-                               row.x += w;
+                       int const ns = row.countSeparators();
+                       // If we have separators, then stretch the row
+                       if (ns) {
+                               row.setSeparatorExtraWidth(double(w) / ns);
+                               row.dimension().wid += w;
+                       } else if (text_->isRTL(par)) {
+                               row.left_margin += w;
+                               row.dimension().wid += w;
                        }
                        break;
                }
                case LYX_ALIGN_RIGHT:
-                       row.x += w;
+                       row.left_margin += w;
+                       row.dimension().wid += w;
                        break;
                case LYX_ALIGN_CENTER:
-                       row.dimension().wid = width - w / 2;
-                       row.x += w / 2;
+                       row.dimension().wid += w / 2;
+                       row.left_margin += w / 2;
+                       break;
+               case LYX_ALIGN_LEFT:
+               case LYX_ALIGN_NONE:
+               case LYX_ALIGN_LAYOUT:
+               case LYX_ALIGN_SPECIAL:
+               case LYX_ALIGN_DECIMAL:
                        break;
                }
+               return;
        }
 
-#if 0
-       if (is_rtl) {
-               pos_type body_pos = par.beginOfBody();
-               pos_type end = row.endpos();
-
-               if (body_pos > 0
-                   && (body_pos > end || !par.isLineSeparator(body_pos - 1))) {
-                       row.x += theFontMetrics(text_->labelFont(par)).
-                               width(layout.labelsep);
-                       if (body_pos <= end)
-                               row.x += row.label_hfill;
-               }
-       }
-#endif
-
+       hfill = w / nh;
+       hfill_rem = w % nh;
+       row.dimension().wid += w;
+       // Set size of hfill insets
        pos_type const endpos = row.endpos();
        pos_type body_pos = par.beginOfBody();
        if (body_pos > 0
            && (body_pos > endpos || !par.isLineSeparator(body_pos - 1)))
                body_pos = 0;
 
-       ParagraphMetrics & pm = par_metrics_[pit];
+       CoordCache::Insets & insetCache = bv_->coordCache().insets();
        Row::iterator cit = row.begin();
        Row::iterator const cend = row.end();
        for ( ; cit != cend; ++cit) {
                if (row.label_hfill && cit->endpos == body_pos
                    && cit->type == Row::SPACE)
-                       cit->dim.wid -= row.label_hfill * (nlh - 1);
-               if (!cit->inset || !cit->inset->isHfill())
-                       continue;
-               if (pm.hfillExpansion(row, cit->pos))
-                       cit->dim.wid = int(cit->pos >= body_pos ?
-                                          max(hfill, 5.0) : row.label_hfill);
-               else
-                       cit->dim.wid = 5;
-               // Cache the inset dimension.
-               bv_->coordCache().insets().add(cit->inset, cit->dim);
-               pm.setInsetDimension(cit->inset, cit->dim);
+                       cit->dim.wid -= int(row.label_hfill * (nlh - 1));
+               if (cit->inset && pm.hfillExpansion(row, cit->pos)) {
+                       if (cit->pos >= body_pos) {
+                               cit->dim.wid += hfill;
+                               --nh;
+                               if (nh == 0)
+                                       cit->dim.wid += hfill_rem;
+                       } else
+                               cit->dim.wid += int(row.label_hfill);
+                       // Cache the inset dimension.
+                       insetCache.add(cit->inset, cit->dim);
+               }
        }
 }
 
 
-int TextMetrics::labelFill(pit_type const pit, Row const & row) const
+int TextMetrics::labelFill(Row const & row) const
 {
-       Paragraph const & par = text_->getPar(pit);
-       LBUFERR(par.beginOfBody() > 0);
+       Paragraph const & par = text_->getPar(row.pit());
+       LBUFERR(par.beginOfBody() > 0 || par.isEnvSeparator(0));
 
        int w = 0;
        Row::const_iterator cit = row.begin();
@@ -688,7 +697,7 @@ int TextMetrics::labelFill(pit_type const pit, Row const & row) const
        // iterate over elements before main body (except the last one,
        // which is extra space).
        while (cit!= end && cit->endpos < par.beginOfBody()) {
-               w += cit->width();
+               w += cit->dim.wid;
                ++cit;
        }
 
@@ -788,29 +797,33 @@ private:
 
 /** This is the function where the hard work is done. The code here is
  * very sensitive to small changes :) Note that part of the
- * intelligence is also in Row::shorten_if_needed
+ * intelligence is also in Row::shortenIfNeeded.
  */
-void TextMetrics::breakRow(Row & row, int const right_margin, pit_type const pit) const
+bool TextMetrics::breakRow(Row & row, int const right_margin) const
 {
-       Paragraph const & par = text_->getPar(pit);
+       Paragraph const & par = text_->getPar(row.pit());
        pos_type const end = par.size();
        pos_type const pos = row.pos();
-       int const width = max_width_ - right_margin;
        pos_type const body_pos = par.beginOfBody();
+       bool const is_rtl = text_->isRTL(par);
+       bool need_new_row = false;
+
        row.clear();
-       row.x = leftMargin(max_width_, pit, pos);
-       row.dimension().wid = row.x;
+       row.left_margin = leftMargin(max_width_, row.pit(), pos);
        row.right_margin = right_margin;
+       if (is_rtl)
+               swap(row.left_margin, row.right_margin);
+       // Remember that the row width takes into account the left_margin
+       // but not the right_margin.
+       row.dimension().wid = row.left_margin;
+       // the width available for the row.
+       int const width = max_width_ - row.right_margin;
 
        if (pos >= end || row.width() > width) {
-               row.dimension().wid += right_margin;
                row.endpos(end);
-               return;
+               return need_new_row;
        }
 
-       ParagraphMetrics const & pm = par_metrics_[pit];
-       ParagraphList const & pars = text_->paragraphs();
-
 #if 0
        //FIXME: As long as leftMargin() is not correctly implemented for
        // MARGIN_RIGHT_ADDRESS_BOX, we should also not do this here.
@@ -820,25 +833,24 @@ void TextMetrics::breakRow(Row & row, int const right_margin, pit_type const pit
 #endif
 
        // check for possible inline completion
-       DocIterator const & inlineCompletionPos = bv_->inlineCompletionPos();
-       pos_type inlineCompletionLPos = -1;
-       if (inlineCompletionPos.inTexted()
-           && inlineCompletionPos.text() == text_
-           && inlineCompletionPos.pit() == pit) {
-               // draw logically behind the previous character
-               inlineCompletionLPos = inlineCompletionPos.pos() - 1;
-       }
+       DocIterator const & ic_it = bv_->inlineCompletionPos();
+       pos_type ic_pos = -1;
+       if (ic_it.inTexted() && ic_it.text() == text_ && ic_it.pit() == row.pit())
+               ic_pos = ic_it.pos();
 
        // Now we iterate through until we reach the right margin
        // or the end of the par, then build a representation of the row.
        pos_type i = pos;
-       FontIterator fi = FontIterator(*this, par, pit, pos);
-       while (i < end && row.width() < width) {
+       FontIterator fi = FontIterator(*this, par, row.pit(), pos);
+       do {
+               // this can happen for an empty row after a newline
+               if (i >= end)
+                       break;
                char_type c = par.getChar(i);
                // The most special cases are handled first.
                if (par.isInset(i)) {
                        Inset const * ins = par.getInset(i);
-                       Dimension dim = pm.insetDimension(ins);
+                       Dimension dim = bv_->coordCache().insets().dim(ins);
                        row.add(i, ins, dim, *fi, par.lookupChange(i));
                } else if (c == ' ' && i + 1 == body_pos) {
                        // There is a space at i, but it should not be
@@ -846,29 +858,39 @@ void TextMetrics::breakRow(Row & row, int const right_margin, pit_type const pit
                        // before body_pos. Instead, insert some spacing to
                        // align text
                        FontMetrics const & fm = theFontMetrics(text_->labelFont(par));
+                       // this is needed to make sure that the row width is correct
+                       row.finalizeLast();
                        int const add = max(fm.width(par.layout().labelsep),
-                                           labelEnd(pit) - row.width());
+                                           labelEnd(row.pit()) - row.width());
                        row.addSpace(i, add, *fi, par.lookupChange(i));
-               } else if (par.isLineSeparator(i)) {
-                       // In theory, no inset has this property. If
-                       // this is done, a new addSeparator which
-                       // takes an inset as parameter should be
-                       // added.
-                       LATTEST(!par.isInset(i));
-                       row.addSeparator(i, c, *fi, par.lookupChange(i));
                } else if (c == '\t')
                        row.addSpace(i, theFontMetrics(*fi).width(from_ascii("    ")),
                                     *fi, par.lookupChange(i));
-               else
+               else {
+                       // FIXME: please someone fix the Hebrew/Arabic parenthesis mess!
+                       // see also Paragraph::getUChar.
+                       if (fi->language()->lang() == "hebrew") {
+                               if (c == '(')
+                                       c = ')';
+                               else if (c == ')')
+                                       c = '(';
+                       }
                        row.add(i, c, *fi, par.lookupChange(i));
+               }
 
                // add inline completion width
-               if (inlineCompletionLPos == i &&
-                   !bv_->inlineCompletion().empty()) {
+               // draw logically behind the previous character
+               if (ic_pos == i + 1 && !bv_->inlineCompletion().empty()) {
+                       docstring const comp = bv_->inlineCompletion();
+                       size_t const uniqueTo =bv_->inlineCompletionUniqueChars();
                        Font f = *fi;
-                       f.fontInfo().setColor(Color_inlinecompletion);
-                       row.addVirtual(i + 1, bv_->inlineCompletion(),
-                                         f, Change());
+
+                       if (uniqueTo > 0) {
+                               f.fontInfo().setColor(Color_inlinecompletion);
+                               row.addVirtual(i + 1, comp.substr(0, uniqueTo), f, Change());
+                       }
+                       f.fontInfo().setColor(Color_nonunique_inlinecompletion);
+                       row.addVirtual(i + 1, comp.substr(uniqueTo), f, Change());
                }
 
                // Handle some situations that abruptly terminate the row
@@ -876,27 +898,31 @@ void TextMetrics::breakRow(Row & row, int const right_margin, pit_type const pit
                // - Before a display inset
                // - After a display inset
                Inset const * inset = 0;
-               if (par.isNewline(i)
+               if (par.isNewline(i) || par.isEnvSeparator(i)
                    || (i + 1 < end && (inset = par.getInset(i + 1))
                        && inset->display())
                    || (!row.empty() && row.back().inset
                        && row.back().inset->display())) {
                        row.right_boundary(true);
+                       need_new_row = par.isNewline(i);
                        ++i;
                        break;
                }
 
                ++i;
                ++fi;
-       }
+       } while (i < end && row.width() <= width);
+       row.finalizeLast();
+       row.endpos(i);
 
        // End of paragraph marker
-       if (lyxrc.paragraph_markers
-           && i == end && size_type(pit + 1) < pars.size()) {
+       ParagraphList const & pars = text_->paragraphs();
+       if (lyxrc.paragraph_markers && !need_new_row
+           && i == end && size_type(row.pit() + 1) < pars.size()) {
                // add a virtual element for the end-of-paragraph
                // marker; it is shown on screen, but does not exist
                // in the paragraph.
-               Font f(text_->layoutFont(pit));
+               Font f(text_->layoutFont(row.pit()));
                f.fontInfo().setColor(Color_paragraphmarker);
                BufferParams const & bparams
                        = text_->inset().buffer().params();
@@ -904,195 +930,148 @@ void TextMetrics::breakRow(Row & row, int const right_margin, pit_type const pit
                row.addVirtual(end, docstring(1, char_type(0x00B6)), f, Change());
        }
 
-       row.finalizeLast();
-       row.endpos(i);
-       // if the row is too large, try to cut at last separator.
-       row.shorten_if_needed(body_pos, width);
-
-       // if the row ends with a separator that is not at end of
-       // paragraph, remove it
-       if (!row.empty() && row.back().type == Row::SEPARATOR
-           && row.endpos() < par.size())
-               row.pop_back();
+       // if the row is too large, try to cut at last separator. In case
+       // of success, reset indication that the row was broken abruptly.
+       if (row.shortenIfNeeded(body_pos, width))
+               row.right_boundary(!row.empty() && row.back().endpos == row.endpos());
 
        // make sure that the RTL elements are in reverse ordering
-       row.reverseRTL(text_->isRTL(par));
-}
+       row.reverseRTL(is_rtl);
+       //LYXERR0("breakrow: row is " << row);
 
+       return need_new_row;
+}
 
-void TextMetrics::setRowHeight(Row & row, pit_type const pit,
-                                   bool topBottomSpace) const
+int TextMetrics::parTopSpacing(pit_type const pit) const
 {
        Paragraph const & par = text_->getPar(pit);
-       // get the maximum ascent and the maximum descent
-       double layoutasc = 0;
-       double layoutdesc = 0;
-       double const dh = defaultRowHeight();
-
-       // ok, let us initialize the maxasc and maxdesc value.
-       // Only the fontsize count. The other properties
-       // are taken from the layoutfont. Nicer on the screen :)
        Layout const & layout = par.layout();
 
-       // as max get the first character of this row then it can
-       // increase but not decrease the height. Just some point to
-       // start with so we don't have to do the assignment below too
-       // often.
-       Buffer const & buffer = bv_->buffer();
-       Font font = displayFont(pit, row.pos());
-       FontSize const tmpsize = font.fontInfo().size();
-       font.fontInfo() = text_->layoutFont(pit);
-       FontSize const size = font.fontInfo().size();
-       font.fontInfo().setSize(tmpsize);
+       int asc = 0;
+       ParagraphList const & pars = text_->paragraphs();
+       double const dh = defaultRowHeight();
 
-       FontInfo labelfont = text_->labelFont(par);
+       BufferParams const & bparams = bv_->buffer().params();
+       Inset const & inset = text_->inset();
+       // some parskips VERY EASY IMPLEMENTATION
+       if (bparams.paragraph_separation == BufferParams::ParagraphSkipSeparation
+               && !inset.getLayout().parbreakIsNewline()
+               && !par.layout().parbreak_is_newline
+               && pit > 0
+               && ((layout.isParagraph() && par.getDepth() == 0)
+                   || (pars[pit - 1].layout().isParagraph()
+                       && pars[pit - 1].getDepth() == 0))) {
+               asc += bparams.getDefSkip().inPixels(*bv_);
+       }
 
-       FontMetrics const & labelfont_metrics = theFontMetrics(labelfont);
-       FontMetrics const & fontmetrics = theFontMetrics(font);
+       if (par.params().startOfAppendix())
+               asc += int(3 * dh);
+
+       // special code for the top label
+       if (layout.labelIsAbove()
+           && (!layout.isParagraphGroup() || text_->isFirstInSequence(pit))
+           && !par.labelString().empty()) {
+               FontInfo labelfont = text_->labelFont(par);
+               FontMetrics const & lfm = theFontMetrics(labelfont);
+               asc += int(lfm.maxHeight() * layout.spacing.getValue()
+                                          * text_->spacing(par)
+                          + (layout.topsep + layout.labelbottomsep) * dh);
+       }
 
-       // these are minimum values
-       double const spacing_val = layout.spacing.getValue()
-               * text_->spacing(par);
-       //lyxerr << "spacing_val = " << spacing_val << endl;
-       int maxasc  = int(fontmetrics.maxAscent()  * spacing_val);
-       int maxdesc = int(fontmetrics.maxDescent() * spacing_val);
+       // Add the layout spaces, for example before and after
+       // a section, or between the items of a itemize or enumerate
+       // environment.
 
-       // insets may be taller
-       ParagraphMetrics const & pm = par_metrics_[pit];
-       Row::const_iterator cit = row.begin();
-       Row::const_iterator cend = row.end();
-       for ( ; cit != cend; ++cit) {
-               if (cit->inset) {
-                       Dimension const & dim = pm.insetDimension(cit->inset);
-                       maxasc  = max(maxasc,  dim.ascent());
-                       maxdesc = max(maxdesc, dim.descent());
-               }
+       pit_type prev = text_->depthHook(pit, par.getDepth());
+       Paragraph const & prevpar = pars[prev];
+       double layoutasc = 0;
+       if (prev != pit
+           && prevpar.layout() == layout
+           && prevpar.getDepth() == par.getDepth()
+           && prevpar.getLabelWidthString() == par.getLabelWidthString()) {
+               layoutasc = layout.itemsep * dh;
+       } else if (pit != 0 && layout.topsep > 0)
+               layoutasc = layout.topsep * dh;
+
+       asc += int(layoutasc * 2 / (2 + pars[pit].getDepth()));
+
+       prev = text_->outerHook(pit);
+       if (prev != pit_type(pars.size())) {
+               asc += int(pars[prev].layout().parsep * dh);
+       } else if (pit != 0) {
+               Paragraph const & prevpar = pars[pit - 1];
+               if (prevpar.getDepth() != 0 || prevpar.layout() == layout)
+                       asc += int(layout.parsep * dh);
        }
 
-       // Check if any custom fonts are larger (Asger)
-       // This is not completely correct, but we can live with the small,
-       // cosmetic error for now.
-       int labeladdon = 0;
-
-       FontSize maxsize =
-               par.highestFontInRange(row.pos(), row.endpos(), size);
-       if (maxsize > font.fontInfo().size()) {
-               // use standard paragraph font with the maximal size
-               FontInfo maxfont = font.fontInfo();
-               maxfont.setSize(maxsize);
-               FontMetrics const & maxfontmetrics = theFontMetrics(maxfont);
-               maxasc  = max(maxasc,  maxfontmetrics.maxAscent());
-               maxdesc = max(maxdesc, maxfontmetrics.maxDescent());
-       }
+       return asc;
+}
 
-       // This is nicer with box insets:
-       ++maxasc;
-       ++maxdesc;
 
+int TextMetrics::parBottomSpacing(pit_type const pit) const
+{
+       double layoutdesc = 0;
        ParagraphList const & pars = text_->paragraphs();
-       Inset const & inset = text_->inset();
+       double const dh = defaultRowHeight();
 
-       // is it a top line?
-       if (row.pos() == 0 && topBottomSpace) {
-               BufferParams const & bufparams = buffer.params();
-               // some parskips VERY EASY IMPLEMENTATION
-               if (bufparams.paragraph_separation == BufferParams::ParagraphSkipSeparation
-                   && !inset.getLayout().parbreakIsNewline()
-                   && !par.layout().parbreak_is_newline
-                   && pit > 0
-                   && ((layout.isParagraph() && par.getDepth() == 0)
-                       || (pars[pit - 1].layout().isParagraph()
-                           && pars[pit - 1].getDepth() == 0))) {
-                       maxasc += bufparams.getDefSkip().inPixels(*bv_);
+       // add the layout spaces, for example before and after
+       // a section, or between the items of a itemize or enumerate
+       // environment
+       pit_type nextpit = pit + 1;
+       if (nextpit != pit_type(pars.size())) {
+               pit_type cpit = pit;
+
+               if (pars[cpit].getDepth() > pars[nextpit].getDepth()) {
+                       double usual = pars[cpit].layout().bottomsep * dh;
+                       double unusual = 0;
+                       cpit = text_->depthHook(cpit, pars[nextpit].getDepth());
+                       if (pars[cpit].layout() != pars[nextpit].layout()
+                               || pars[nextpit].getLabelWidthString() != pars[cpit].getLabelWidthString())
+                               unusual = pars[cpit].layout().bottomsep * dh;
+                       layoutdesc = max(unusual, usual);
+               } else if (pars[cpit].getDepth() == pars[nextpit].getDepth()) {
+                       if (pars[cpit].layout() != pars[nextpit].layout()
+                               || pars[nextpit].getLabelWidthString() != pars[cpit].getLabelWidthString())
+                               layoutdesc = int(pars[cpit].layout().bottomsep * dh);
                }
+       }
 
-               if (par.params().startOfAppendix())
-                       maxasc += int(3 * dh);
-
-               // special code for the top label
-               if (layout.labelIsAbove()
-                   && (!layout.isParagraphGroup() || text_->isFirstInSequence(pit))
-                   && !par.labelString().empty()) {
-                       labeladdon = int(
-                                 labelfont_metrics.maxHeight()
-                                       * layout.spacing.getValue()
-                                       * text_->spacing(par)
-                               + (layout.topsep + layout.labelbottomsep) * dh);
-               }
+       return int(layoutdesc * 2 / (2 + pars[pit].getDepth()));
+}
 
-               // Add the layout spaces, for example before and after
-               // a section, or between the items of a itemize or enumerate
-               // environment.
 
-               pit_type prev = text_->depthHook(pit, par.getDepth());
-               Paragraph const & prevpar = pars[prev];
-               if (prev != pit
-                   && prevpar.layout() == layout
-                   && prevpar.getDepth() == par.getDepth()
-                   && prevpar.getLabelWidthString()
-                                       == par.getLabelWidthString()) {
-                       layoutasc = layout.itemsep * dh;
-               } else if (pit != 0 || row.pos() != 0) {
-                       if (layout.topsep > 0)
-                               layoutasc = layout.topsep * dh;
-               }
+void TextMetrics::setRowHeight(Row & row) const
+{
+       Paragraph const & par = text_->getPar(row.pit());
+       Layout const & layout = par.layout();
+       double const spacing_val = layout.spacing.getValue() * text_->spacing(par);
 
-               prev = text_->outerHook(pit);
-               if (prev != pit_type(pars.size())) {
-                       maxasc += int(pars[prev].layout().parsep * dh);
-               } else if (pit != 0) {
-                       Paragraph const & prevpar = pars[pit - 1];
-                       if (prevpar.getDepth() != 0 ||
-                                       prevpar.layout() == layout) {
-                               maxasc += int(layout.parsep * dh);
-                       }
-               }
-       }
+       // Initial value for ascent (useful if row is empty).
+       Font const font = displayFont(row.pit(), row.pos());
+       FontMetrics const & fm = theFontMetrics(font);
+       int maxasc = int(fm.maxAscent() * spacing_val);
+       int maxdes = int(fm.maxDescent() * spacing_val);
 
-       // is it a bottom line?
-       if (row.endpos() >= par.size() && topBottomSpace) {
-               // add the layout spaces, for example before and after
-               // a section, or between the items of a itemize or enumerate
-               // environment
-               pit_type nextpit = pit + 1;
-               if (nextpit != pit_type(pars.size())) {
-                       pit_type cpit = pit;
-
-                       if (pars[cpit].getDepth() > pars[nextpit].getDepth()) {
-                               double usual = pars[cpit].layout().bottomsep * dh;
-                               double unusual = 0;
-                               cpit = text_->depthHook(cpit, pars[nextpit].getDepth());
-                               if (pars[cpit].layout() != pars[nextpit].layout()
-                                   || pars[nextpit].getLabelWidthString() != pars[cpit].getLabelWidthString())
-                                       unusual = pars[cpit].layout().bottomsep * dh;
-                               layoutdesc = max(unusual, usual);
-                       } else if (pars[cpit].getDepth() == pars[nextpit].getDepth()) {
-                               if (pars[cpit].layout() != pars[nextpit].layout()
-                                       || pars[nextpit].getLabelWidthString() != pars[cpit].getLabelWidthString())
-                                       layoutdesc = int(pars[cpit].layout().bottomsep * dh);
-                       }
+       // Find the ascent/descent of the row contents
+       Row::const_iterator cit = row.begin();
+       Row::const_iterator cend = row.end();
+       for ( ; cit != cend; ++cit) {
+               if (cit->inset) {
+                       maxasc = max(maxasc, cit->dim.ascent());
+                       maxdes = max(maxdes, cit->dim.descent());
+               } else {
+                       FontMetrics const & fm = theFontMetrics(cit->font);
+                       maxasc = max(maxasc, int(fm.maxAscent() * spacing_val));
+                       maxdes = max(maxdes, int(fm.maxDescent() * spacing_val));
                }
        }
 
-       // incalculate the layout spaces
-       maxasc  += int(layoutasc  * 2 / (2 + pars[pit].getDepth()));
-       maxdesc += int(layoutdesc * 2 / (2 + pars[pit].getDepth()));
-
-       // FIXME: the correct way is to do the following is to move the
-       // following code in another method specially tailored for the
-       // main Text. The following test is thus bogus.
-       // Top and bottom margin of the document (only at top-level)
-       if (main_text_ && topBottomSpace) {
-               if (pit == 0 && row.pos() == 0)
-                       maxasc += 20;
-               if (pit + 1 == pit_type(pars.size()) &&
-                   row.endpos() == par.size() &&
-                               !(row.endpos() > 0 && par.isNewline(row.endpos() - 1)))
-                       maxdesc += 20;
-       }
+       // This is nicer with box insets
+       ++maxasc;
+       ++maxdes;
 
-       row.dimension().asc = maxasc + labeladdon;
-       row.dimension().des = maxdesc;
+       row.dimension().asc = maxasc;
+       row.dimension().des = maxdes;
 }
 
 
@@ -1102,38 +1081,43 @@ void TextMetrics::setRowHeight(Row & row, pit_type const pit,
 pos_type TextMetrics::getPosNearX(Row const & row, int & x,
                                  bool & boundary) const
 {
+       //LYXERR0("getPosNearX(" << x << ") row=" << row);
        /// For the main Text, it is possible that this pit is not
        /// yet in the CoordCache when moving cursor up.
        /// x Paragraph coordinate is always 0 for main text anyway.
        int const xo = origin_.x_;
        x -= xo;
 
+       // Adapt to cursor row scroll offset if applicable.
+       int const offset = bv_->horizScrollOffset(text_, row.pit(), row.pos());
+       x += offset;
+
        pos_type pos = row.pos();
        boundary = false;
        if (row.empty())
-               x = row.x;
-       else if (x <= row.x) {
+               x = row.left_margin;
+       else if (x <= row.left_margin) {
                pos = row.front().left_pos();
-               x = row.x;
-       } else if (x >= row.width() - row.right_margin) {
+               x = row.left_margin;
+       } else if (x >= row.width()) {
                pos = row.back().right_pos();
-               x = row.width() - row.right_margin;
+               x = row.width();
        } else {
-               double w = row.x;
+               double w = row.left_margin;
                Row::const_iterator cit = row.begin();
                Row::const_iterator cend = row.end();
                for ( ; cit != cend; ++cit) {
-                       if (w <= x &&  w + cit->width() > x) {
-                               double x_offset = x - w;
+                       if (w <= x &&  w + cit->full_width() > x) {
+                               int x_offset = int(x - w);
                                pos = cit->x2pos(x_offset);
-                               x = x_offset + w;
+                               x = int(x_offset + w);
                                break;
                        }
-                       w += cit->width();
+                       w += cit->full_width();
                }
                if (cit == row.end()) {
                        pos = row.back().right_pos();
-                       x = row.width() - row.right_margin;
+                       x = row.width();
                }
                /** This tests for the case where the cursor is placed
                 * just before a font direction change. See comment on
@@ -1142,19 +1126,29 @@ pos_type TextMetrics::getPosNearX(Row const & row, int & x,
                 */
                else if (pos == cit->endpos
                         && cit + 1 != row.end()
-                        && cit->font.isVisibleRightToLeft() != (cit + 1)->font.isVisibleRightToLeft())
+                        && cit->isRTL() != (cit + 1)->isRTL())
                        boundary = true;
        }
 
        /** This tests for the case where the cursor is set at the end
-        * of a row which has been broken due to a display inset on
-        * next row. This is indicated by Row::right_boundary.
+        * of a row which has been broken due something else than a
+        * separator (a display inset or a forced breaking of the
+        * row). We know that there is a separator when the end of the
+        * row is larger than the end of its last element.
         */
        if (!row.empty() && pos == row.back().endpos
-           && row.back().endpos == row.endpos())
-               boundary = row.right_boundary();
+           && row.back().endpos == row.endpos()) {
+               Inset const * inset = row.back().inset;
+               if (inset && (inset->lyxCode() == NEWLINE_CODE
+                             || inset->lyxCode() == SEPARATOR_CODE))
+                       pos = row.back().pos;
+               else
+                       boundary = row.right_boundary();
+       }
+
+       x += xo - offset;
+       //LYXERR0("getPosNearX ==> pos=" << pos << ", boundary=" << boundary);
 
-       x += xo;
        return pos;
 }
 
@@ -1348,11 +1342,28 @@ Inset * TextMetrics::editXY(Cursor & cur, int x, int y,
        cur.setTargetX(x);
 
        // Try to descend recursively inside the inset.
-       inset = inset->editXY(cur, x, yy);
+       Inset * edited = inset->editXY(cur, x, yy);
+       if (edited == inset && cur.pos() == it->pos) {
+               // non-editable inset, set cursor after the inset if x is
+               // nearer to that position (bug 9628)
+               CoordCache::Insets const & insetCache = bv_->coordCache().getInsets();
+               Dimension const & dim = insetCache.dim(inset);
+               Point p = insetCache.xy(inset);
+               bool const is_rtl = text_->isRTL(text_->getPar(pit));
+               if (is_rtl) {
+                       // "in front of" == "right of"
+                       if (abs(p.x_ - x) < abs(p.x_ + dim.wid - x))
+                               cur.posForward();
+               } else {
+                       // "in front of" == "left of"
+                       if (abs(p.x_ + dim.wid - x) < abs(p.x_ - x))
+                               cur.posForward();
+               }
+       }
 
        if (cur.top().text() == text_)
                cur.setCurrentFont();
-       return inset;
+       return edited;
 }
 
 
@@ -1397,7 +1408,7 @@ void TextMetrics::setCursorFromCoordinates(Cursor & cur, int const x, int const
 InsetList::InsetTable * TextMetrics::checkInsetHit(pit_type pit, int x, int y)
 {
        Paragraph const & par = text_->paragraphs()[pit];
-       ParagraphMetrics const & pm = par_metrics_[pit];
+       CoordCache::Insets const & insetCache = bv_->coordCache().getInsets();
 
        LYXERR(Debug::DEBUG, "x: " << x << " y: " << y << "  pit: " << pit);
 
@@ -1408,13 +1419,13 @@ InsetList::InsetTable * TextMetrics::checkInsetHit(pit_type pit, int x, int y)
 
                LYXERR(Debug::DEBUG, "examining inset " << inset);
 
-               if (!bv_->coordCache().getInsets().has(inset)) {
+               if (!insetCache.has(inset)) {
                        LYXERR(Debug::DEBUG, "inset has no cached position");
                        return 0;
                }
 
-               Dimension const & dim = pm.insetDimension(inset);
-               Point p = bv_->coordCache().getInsets().xy(inset);
+               Dimension const & dim = insetCache.dim(inset);
+               Point p = insetCache.xy(inset);
 
                LYXERR(Debug::DEBUG, "xo: " << p.x_ << "..." << p.x_ + dim.wid
                        << " yo: " << p.y_ - dim.asc << "..." << p.y_ + dim.des);
@@ -1445,17 +1456,10 @@ Inset * TextMetrics::checkInsetHit(int x, int y)
 }
 
 
-int TextMetrics::cursorX(CursorSlice const & sl,
-               bool boundary) const
+Row::const_iterator const
+TextMetrics::findRowElement(Row const & row, pos_type const pos,
+                            bool const boundary, double & x) const
 {
-       LASSERT(sl.text() == text_, return 0);
-
-       ParagraphMetrics const & pm = par_metrics_[sl.pit()];
-       if (pm.rows().empty())
-               return 0;
-       Row const & row = pm.getRow(sl.pos(), boundary);
-       pos_type const pos = sl.pos();
-
        /**
         * When boundary is true, position i is in the row element (pos, endpos)
         * if
@@ -1466,36 +1470,57 @@ int TextMetrics::cursorX(CursorSlice const & sl,
        */
        int const boundary_corr = (boundary && pos) ? -1 : 0;
 
+       x = row.left_margin;
+
        /** Early return in trivial cases
         * 1) the row is empty
         * 2) the position is the left-most position of the row; there
-        * is a quirck herehowever: if the first element is virtual
+        * is a quirk here however: if the first element is virtual
         * (end-of-par marker for example), then we have to look
         * closer
         */
        if (row.empty()
-           || (pos == row.begin()->left_pos()
-               && pos != row.begin()->right_pos()))
-               return int(row.x);
+           || (pos == row.begin()->left_pos() && !boundary
+                       && !row.begin()->isVirtual()))
+               return row.begin();
 
        Row::const_iterator cit = row.begin();
-       double x = row.x;
        for ( ; cit != row.end() ; ++cit) {
                /** Look whether the cursor is inside the element's
                 * span. Note that it is necessary to take the
-                * boundary in account, and to accept virtual
+                * boundary into account, and to accept virtual
                 * elements, which have pos == endpos.
                 */
                if (pos + boundary_corr >= cit->pos
-                   && (pos + boundary_corr < cit->endpos
-                       || cit->pos == cit->endpos)) {
+                   && (pos + boundary_corr < cit->endpos || cit->isVirtual())) {
                                x += cit->pos2x(pos);
                                break;
                }
-               x += cit->width();
+               x += cit->full_width();
        }
 
+       if (cit == row.end())
+               --cit;
+
+       return cit;
+}
+
+
+int TextMetrics::cursorX(CursorSlice const & sl,
+               bool boundary) const
+{
+       LASSERT(sl.text() == text_, return 0);
+
+       ParagraphMetrics const & pm = par_metrics_[sl.pit()];
+       if (pm.rows().empty())
+               return 0;
+       Row const & row = pm.getRow(sl.pos(), boundary);
+       pos_type const pos = sl.pos();
+
+       double x = 0;
+       findRowElement(row, pos, boundary, x);
        return int(x);
+
 }
 
 
@@ -1547,11 +1572,13 @@ bool TextMetrics::cursorEnd(Cursor & cur)
        bool boundary = false;
        if (end != cur.lastpos()) {
                if (!cur.paragraph().isLineSeparator(end-1)
-                   && !cur.paragraph().isNewline(end-1))
+                   && !cur.paragraph().isNewline(end-1)
+                   && !cur.paragraph().isEnvSeparator(end-1))
                        boundary = true;
                else
                        --end;
-       }
+       } else if (cur.paragraph().isEnvSeparator(end-1))
+               --end;
        return text_->setCursor(cur, cur.pit(), end, true, boundary);
 }
 
@@ -1564,7 +1591,7 @@ void TextMetrics::deleteLineForward(Cursor & cur)
                text_->cursorForward(cur);
        } else {
                cur.resetAnchor();
-               cur.setSelection(true); // to avoid deletion
+               cur.selection(true); // to avoid deletion
                cursorEnd(cur);
                cur.setSelection();
                // What is this test for ??? (JMarc)
@@ -1577,17 +1604,17 @@ void TextMetrics::deleteLineForward(Cursor & cur)
 }
 
 
-bool TextMetrics::isLastRow(pit_type pit, Row const & row) const
+bool TextMetrics::isLastRow(Row const & row) const
 {
        ParagraphList const & pars = text_->paragraphs();
-       return row.endpos() >= pars[pit].size()
-               && pit + 1 == pit_type(pars.size());
+       return row.endpos() >= pars[row.pit()].size()
+               && row.pit() + 1 == pit_type(pars.size());
 }
 
 
-bool TextMetrics::isFirstRow(pit_type pit, Row const & row) const
+bool TextMetrics::isFirstRow(Row const & row) const
 {
-       return row.pos() == 0 && pit == 0;
+       return row.pos() == 0 && row.pit() == 0;
 }
 
 
@@ -1611,6 +1638,7 @@ int TextMetrics::leftMargin(int max_width,
        //lyxerr << "TextMetrics::leftMargin: pit: " << pit << " pos: " << pos << endl;
        DocumentClass const & tclass = buffer.params().documentClass();
        Layout const & layout = par.layout();
+       FontMetrics const & bfm = theFontMetrics(buffer.params().getFont());
 
        docstring parindent = layout.parindent;
 
@@ -1619,21 +1647,25 @@ int TextMetrics::leftMargin(int max_width,
        if (text_->isMainText())
                l_margin += bv_->leftMargin();
 
-       l_margin += theFontMetrics(buffer.params().getFont()).signedWidth(
-               tclass.leftmargin());
+       l_margin += bfm.signedWidth(tclass.leftmargin());
 
-       if (par.getDepth() != 0) {
+       int depth = par.getDepth();
+       if (depth != 0) {
                // find the next level paragraph
                pit_type newpar = text_->outerHook(pit);
                if (newpar != pit_type(pars.size())) {
                        if (pars[newpar].layout().isEnvironment()) {
-                               l_margin = leftMargin(max_width, newpar);
+                               int nestmargin = depth * nestMargin();
+                               if (text_->isMainText())
+                                       nestmargin += changebarMargin();
+                               l_margin = max(leftMargin(max_width, newpar), nestmargin);
                                // Remove the parindent that has been added
                                // if the paragraph was empty.
-                               if (pars[newpar].empty()) {
+                               if (pars[newpar].empty() &&
+                                   buffer.params().paragraph_separation ==
+                                   BufferParams::ParagraphIndentSeparation) {
                                        docstring pi = pars[newpar].layout().parindent;
-                                       l_margin -= theFontMetrics(
-                                               buffer.params().getFont()).signedWidth(pi);
+                                       l_margin -= bfm.signedWidth(pi);
                                }
                        }
                        if (tclass.isDefaultLayout(par.layout())
@@ -1648,45 +1680,50 @@ int TextMetrics::leftMargin(int max_width,
 
        // This happens after sections or environments in standard classes.
        // We have to check the previous layout at same depth.
-       if (tclass.isDefaultLayout(par.layout()) && pit > 0
-           && pars[pit - 1].getDepth() >= par.getDepth()) {
+       if (buffer.params().paragraph_separation ==
+                       BufferParams::ParagraphSkipSeparation)
+               parindent.erase();
+       else if (pit > 0 && pars[pit - 1].getDepth() >= par.getDepth()) {
                pit_type prev = text_->depthHook(pit, par.getDepth());
-               if (pars[prev < pit ? prev : pit - 1].layout().nextnoindent)
+               if (par.layout() == pars[prev].layout()) {
+                       if (prev != pit - 1
+                           && pars[pit - 1].layout().nextnoindent)
+                               parindent.erase();
+               } else if (pars[prev].layout().nextnoindent)
                        parindent.erase();
        }
 
        FontInfo const labelfont = text_->labelFont(par);
-       FontMetrics const & labelfont_metrics = theFontMetrics(labelfont);
+       FontMetrics const & lfm = theFontMetrics(labelfont);
 
        switch (layout.margintype) {
        case MARGIN_DYNAMIC:
                if (!layout.leftmargin.empty()) {
-                       l_margin += theFontMetrics(buffer.params().getFont()).signedWidth(
-                               layout.leftmargin);
+                       l_margin += bfm.signedWidth(layout.leftmargin);
                }
                if (!par.labelString().empty()) {
-                       l_margin += labelfont_metrics.signedWidth(layout.labelindent);
-                       l_margin += labelfont_metrics.width(par.labelString());
-                       l_margin += labelfont_metrics.width(layout.labelsep);
+                       l_margin += lfm.signedWidth(layout.labelindent);
+                       l_margin += lfm.width(par.labelString());
+                       l_margin += lfm.width(layout.labelsep);
                }
                break;
 
        case MARGIN_MANUAL: {
-               l_margin += labelfont_metrics.signedWidth(layout.labelindent);
+               l_margin += lfm.signedWidth(layout.labelindent);
                // The width of an empty par, even with manual label, should be 0
                if (!par.empty() && pos >= par.beginOfBody()) {
                        if (!par.getLabelWidthString().empty()) {
                                docstring labstr = par.getLabelWidthString();
-                               l_margin += labelfont_metrics.width(labstr);
-                               l_margin += labelfont_metrics.width(layout.labelsep);
+                               l_margin += lfm.width(labstr);
+                               l_margin += lfm.width(layout.labelsep);
                        }
                }
                break;
        }
 
        case MARGIN_STATIC: {
-               l_margin += theFontMetrics(buffer.params().getFont()).
-                       signedWidth(layout.leftmargin) * 4      / (par.getDepth() + 4);
+               l_margin += bfm.signedWidth(layout.leftmargin) * 4
+                            / (par.getDepth() + 4);
                break;
        }
 
@@ -1694,20 +1731,20 @@ int TextMetrics::leftMargin(int max_width,
                if (layout.labeltype == LABEL_MANUAL) {
                        // if we are at position 0, we are never in the body
                        if (pos > 0 && pos >= par.beginOfBody())
-                               l_margin += labelfont_metrics.signedWidth(layout.leftmargin);
+                               l_margin += lfm.signedWidth(layout.leftmargin);
                        else
-                               l_margin += labelfont_metrics.signedWidth(layout.labelindent);
+                               l_margin += lfm.signedWidth(layout.labelindent);
                } else if (pos != 0
                           // Special case to fix problems with
                           // theorems (JMarc)
                           || (layout.labeltype == LABEL_STATIC
                               && layout.latextype == LATEX_ENVIRONMENT
                               && !text_->isFirstInSequence(pit))) {
-                       l_margin += labelfont_metrics.signedWidth(layout.leftmargin);
+                       l_margin += lfm.signedWidth(layout.leftmargin);
                } else if (!layout.labelIsAbove()) {
-                       l_margin += labelfont_metrics.signedWidth(layout.labelindent);
-                       l_margin += labelfont_metrics.width(layout.labelsep);
-                       l_margin += labelfont_metrics.width(par.labelString());
+                       l_margin += lfm.signedWidth(layout.labelindent);
+                       l_margin += lfm.width(layout.labelsep);
+                       l_margin += lfm.width(par.labelString());
                }
                break;
 
@@ -1724,7 +1761,7 @@ int TextMetrics::leftMargin(int max_width,
                for ( ; rit != end; ++rit)
                        if (rit->fill() < minfill)
                                minfill = rit->fill();
-               l_margin += theFontMetrics(buffer.params().getFont()).signedWidth(layout.leftmargin);
+               l_margin += bfm.signedWidth(layout.leftmargin);
                l_margin += minfill;
 #endif
                // also wrong, but much shorter.
@@ -1734,7 +1771,7 @@ int TextMetrics::leftMargin(int max_width,
        }
 
        if (!par.params().leftIndent().zero())
-               l_margin += par.params().leftIndent().inPixels(max_width);
+               l_margin += par.params().leftIndent().inPixels(max_width, lfm.em());
 
        LyXAlignment align;
 
@@ -1768,8 +1805,7 @@ int TextMetrics::leftMargin(int max_width,
                        // the indentation set in the document
                        // settings
                        if (buffer.params().getIndentation().asLyXCommand() == "default")
-                               l_margin += theFontMetrics(
-                                       buffer.params().getFont()).signedWidth(parindent);
+                               l_margin += bfm.signedWidth(parindent);
                        else
                                l_margin += buffer.params().getIndentation().inPixels(*bv_);
                }
@@ -1801,17 +1837,32 @@ void TextMetrics::draw(PainterInfo & pi, int x, int y) const
 }
 
 
-void TextMetrics::drawParagraph(PainterInfo & pi, pit_type pit, int x, int y) const
+void TextMetrics::drawParagraph(PainterInfo & pi, pit_type const pit, int const x, int y) const
 {
-       BufferParams const & bparams = bv_->buffer().params();
        ParagraphMetrics const & pm = par_metrics_[pit];
        if (pm.rows().empty())
                return;
-
-       bool const original_drawing_state = pi.pain.isDrawingEnabled();
-       int const ww = bv_->workHeight();
        size_t const nrows = pm.rows().size();
 
+       // Use fast lane when drawing is disabled.
+       if (!pi.pain.isDrawingEnabled()) {
+               for (size_t i = 0; i != nrows; ++i) {
+
+                       Row const & row = pm.rows()[i];
+                       // Adapt to cursor row scroll offset if applicable.
+                       int row_x = x - bv_->horizScrollOffset(text_, pit, row.pos());
+                       if (i)
+                               y += row.ascent();
+
+                       RowPainter rp(pi, *text_, row, row_x, y);
+
+                       rp.paintOnlyInsets();
+                       y += row.descent();
+               }
+               return;
+       }
+
+       int const ww = bv_->workHeight();
        Cursor const & cur = bv_->cursor();
        DocIterator sel_beg = cur.selectionBegin();
        DocIterator sel_end = cur.selectionEnd();
@@ -1841,14 +1892,25 @@ void TextMetrics::drawParagraph(PainterInfo & pi, pit_type pit, int x, int y) co
        for (size_t i = 0; i != nrows; ++i) {
 
                Row const & row = pm.rows()[i];
+               // Adapt to cursor row scroll offset if applicable.
+               int row_x = x - bv_->horizScrollOffset(text_, pit, row.pos());
                if (i)
                        y += row.ascent();
 
+               RowPainter rp(pi, *text_, row, row_x, y);
+
+               // It is not needed to draw on screen if we are not inside.
                bool const inside = (y + row.descent() >= 0
                        && y - row.ascent() < ww);
-               // It is not needed to draw on screen if we are not inside.
-               pi.pain.setDrawingEnabled(inside && original_drawing_state);
-               RowPainter rp(pi, *text_, pit, row, x, y);
+               pi.pain.setDrawingEnabled(inside);
+               if (!inside) {
+                       // Paint only the insets to set inset cache correctly
+                       // FIXME: remove paintOnlyInsets when we know that positions
+                       // have already been set.
+                       rp.paintOnlyInsets();
+                       y += row.descent();
+                       continue;
+               }
 
                if (selection)
                        row.setSelectionAndMargins(sel_beg_par, sel_end_par);
@@ -1865,11 +1927,12 @@ void TextMetrics::drawParagraph(PainterInfo & pi, pit_type pit, int x, int y) co
                }
 
                // Row signature; has row changed since last paint?
-               row.setCrc(pm.computeRowSignature(row, bparams));
-               bool row_has_changed = row.changed();
+               row.setCrc(pm.computeRowSignature(row, *bv_));
+               bool row_has_changed = row.changed()
+                       || bv_->hadHorizScrollOffset(text_, pit, row.pos());
 
                // Take this opportunity to spellcheck the row contents.
-               if (row_has_changed && lyxrc.spellcheck_continuously) {
+               if (row_has_changed && pi.do_spellcheck && lyxrc.spellcheck_continuously) {
                        text_->getPar(pit).spellCheck();
                }
 
@@ -1886,20 +1949,24 @@ void TextMetrics::drawParagraph(PainterInfo & pi, pit_type pit, int x, int y) co
                // Clear background of this row if paragraph background was not
                // already cleared because of a full repaint.
                if (!pi.full_repaint && row_has_changed) {
-                       pi.pain.fillRectangle(x, y - row.ascent(),
+                       LYXERR(Debug::PAINTING, "Clear rect@("
+                              << max(row_x, 0) << ", " << y - row.ascent() << ")="
+                              << width() << " x " << row.height());
+                       pi.pain.fillRectangle(max(row_x, 0), y - row.ascent(),
                                width(), row.height(), pi.background_color);
                }
 
                // Instrumentation for testing row cache (see also
                // 12 lines lower):
-               if (lyxerr.debugging(Debug::PAINTING) && inside
+               if (lyxerr.debugging(Debug::PAINTING)
                        && (row.selection() || pi.full_repaint || row_has_changed)) {
                                string const foreword = text_->isMainText() ?
                                        "main text redraw " : "inset text redraw: ";
                        LYXERR(Debug::PAINTING, foreword << "pit=" << pit << " row=" << i
                                << " row_selection="    << row.selection()
                                << " full_repaint="     << pi.full_repaint
-                               << " row_has_changed="  << row_has_changed);
+                               << " row_has_changed="  << row_has_changed
+                               << " drawingEnabled=" << pi.pain.isDrawingEnabled());
                }
 
                // Backup full_repaint status and force full repaint
@@ -1921,13 +1988,15 @@ void TextMetrics::drawParagraph(PainterInfo & pi, pit_type pit, int x, int y) co
                        rp.paintLast();
                if (i == 0 && is_rtl)
                        rp.paintFirst();
+               rp.paintTooLargeMarks(row_x + row.left_x() < 0,
+                                     row_x + row.right_x() > bv_->workWidth());
                y += row.descent();
 
                // Restore full_repaint status.
                pi.full_repaint = tmp;
        }
        // Re-enable screen drawing for future use of the painter.
-       pi.pain.setDrawingEnabled(original_drawing_state);
+       pi.pain.setDrawingEnabled(true);
 
        //LYXERR(Debug::PAINTING, ".");
 }
@@ -1943,18 +2012,19 @@ void TextMetrics::completionPosAndDim(Cursor const & cur, int & x, int & y,
        DocIterator wordStart = bvcur;
        wordStart.pos() -= word.length();
 
-       // get position on screen of the word start and end
-       //FIXME: Is it necessary to explicitly set this to false?
-       wordStart.boundary(false);
-       Point lxy = cur.bv().getPos(wordStart);
-       Point rxy = cur.bv().getPos(bvcur);
-
        // calculate dimensions of the word
        Row row;
+       row.pit(bvcur.pit());
        row.pos(wordStart.pos());
        row.endpos(bvcur.pos());
-       setRowHeight(row, bvcur.pit(), false);
+       setRowHeight(row);
        dim = row.dimension();
+
+       // get position on screen of the word start and end
+       //FIXME: Is it necessary to explicitly set this to false?
+       wordStart.boundary(false);
+       Point lxy = cur.bv().getPos(wordStart);
+       Point rxy = cur.bv().getPos(bvcur);
        dim.wid = abs(rxy.x_ - lxy.x_);
 
        // calculate position of word