#include "Buffer.h"
#include "BufferParams.h"
#include "BufferView.h"
-#include "paragraph_funcs.h"
-#include "ParIterator.h"
+#include "bufferview_funcs.h"
+#include "Color.h"
#include "CoordCache.h"
#include "debug.h"
-#include "FuncRequest.h"
#include "FontIterator.h"
-#include "Color.h"
+#include "FuncRequest.h"
#include "Length.h"
#include "LyXRC.h"
-#include "Text.h"
#include "MetricsInfo.h"
+#include "paragraph_funcs.h"
#include "ParagraphParameters.h"
+#include "ParIterator.h"
+#include "rowpainter.h"
+#include "Text.h"
#include "VSpace.h"
#include "frontends/FontMetrics.h"
#include "frontends/Painter.h"
+#include <boost/current_function.hpp>
+
using std::max;
using std::min;
using std::endl;
dim_.asc = 10;
dim_.des = 10;
- //text_->updateLabels(*bv->buffer());
+ //text_->updateLabels(bv->buffer());
}
int TextMetrics::rightMargin(ParagraphMetrics const & pm) const
{
- return main_text_? pm.rightMargin(*bv_->buffer()) : 0;
+ return main_text_? pm.rightMargin(bv_->buffer()) : 0;
}
int TextMetrics::rightMargin(pit_type const pit) const
{
- return main_text_? par_metrics_[pit].rightMargin(*bv_->buffer()) : 0;
+ return main_text_? par_metrics_[pit].rightMargin(bv_->buffer()) : 0;
}
bool TextMetrics::redoParagraph(pit_type const pit)
{
+ Paragraph & par = text_->getPar(pit);
// IMPORTANT NOTE: We pass 'false' explicitely in order to not call
// redoParagraph() recursively inside parMetrics.
Dimension old_dim = parMetrics(pit, false).dim();
ParagraphMetrics & pm = par_metrics_[pit];
- // reinitialize paragraph dimension.
- pm.dim() = Dimension();
- Paragraph & par = text_->getPar(pit);
- Buffer & buffer = *bv_->buffer();
+ pm.reset(par);
+
+ Buffer & buffer = bv_->buffer();
+ BufferParams const & bparams = buffer.params();
main_text_ = (text_ == &buffer.text());
bool changed = false;
InsetList::const_iterator ii = par.insetlist.begin();
InsetList::const_iterator iend = par.insetlist.end();
for (; ii != iend; ++ii) {
+ Dimension old_dim = ii->inset->dimension();
Dimension dim;
int const w = max_width_ - text_->leftMargin(buffer, max_width_, pit, ii->pos)
- right_margin;
bufferfont : text_->getFont(buffer, par, ii->pos);
MetricsInfo mi(bv_, font, w);
changed |= ii->inset->metrics(mi, dim);
+ changed |= (old_dim != dim);
}
- // rebreak the paragraph
- pm.rows().clear();
-
par.setBeginOfBody();
- pos_type z = 0;
+ pos_type first = 0;
+ size_t row_index = 0;
// maximum pixel width of a row
int width = max_width_ - right_margin; // - leftMargin(buffer, max_width_, pit, row);
do {
- Row row(z);
- rowBreakPoint(width, pit, row);
- setRowWidth(right_margin, pit, row);
- setHeightOfRow(pit, row);
- pm.rows().push_back(row);
- pm.dim().wid = std::max(pm.dim().wid, row.width());
- pm.dim().des += row.height();
- z = row.endpos();
- } while (z < par.size());
+ Dimension dim;
+ pos_type end = rowBreakPoint(width, pit, first);
+ dim.wid = rowWidth(right_margin, pit, first, end);
+ boost::tie(dim.asc, dim.des) = rowHeight(pit, first, end);
+ if (row_index == pm.rows().size())
+ pm.rows().push_back(Row());
+ Row & row = pm.rows()[row_index];
+ row.setChanged(false);
+ row.pos(first);
+ row.endpos(end);
+ row.setDimension(dim);
+ computeRowMetrics(pit, row);
+ pm.computeRowSignature(row, bparams);
+ first = end;
+ ++row_index;
+
+ pm.dim().wid = std::max(pm.dim().wid, dim.wid);
+ pm.dim().des += dim.height();
+ } while (first < par.size());
+
+ 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 (z > 0 && par.isNewline(z - 1)) {
- Row row(z);
- row.endpos(z);
- setRowWidth(right_margin, pit, row);
- setHeightOfRow(pit, row);
- pm.rows().push_back(row);
- pm.dim().des += row.height();
+ if (first > 0 && par.isNewline(first - 1)) {
+ Dimension dim;
+ dim.wid = rowWidth(right_margin, pit, first, first);
+ boost::tie(dim.asc, dim.des) = rowHeight(pit, first, first);
+ if (row_index == pm.rows().size())
+ pm.rows().push_back(Row());
+ Row & row = pm.rows()[row_index];
+ row.setChanged(false);
+ row.pos(first);
+ row.endpos(first);
+ row.setDimension(dim);
+ computeRowMetrics(pit, row);
+ pm.computeRowSignature(row, bparams);
+ pm.dim().des += dim.height();
}
pm.dim().asc += pm.rows()[0].ascent();
changed |= old_dim.height() != pm.dim().height();
- // Update the row change statuses. The painter will need that info
- // in order to know which row has to be repainted.
- pm.updateRowChangeStatus();
-
return changed;
}
-RowMetrics TextMetrics::computeRowMetrics(pit_type const pit,
- Row const & row) const
+void TextMetrics::computeRowMetrics(pit_type const pit,
+ Row & row) const
{
- RowMetrics result;
- Buffer & buffer = *bv_->buffer();
+ Buffer & buffer = bv_->buffer();
Paragraph const & par = text_->getPar(pit);
double w = dim_.wid - row.width();
bool const is_rtl = text_->isRTL(buffer, par);
if (is_rtl)
- result.x = rightMargin(pit);
+ row.x = rightMargin(pit);
else
- result.x = text_->leftMargin(buffer, max_width_, pit, row.pos());
+ row.x = text_->leftMargin(buffer, max_width_, pit, row.pos());
// is there a manual margin with a manual label
- Layout_ptr const & layout = par.layout();
+ LayoutPtr const & layout = par.layout();
if (layout->margintype == MARGIN_MANUAL
&& layout->labeltype == LABEL_MANUAL) {
++nlh;
if (nlh && !par.getLabelWidthString().empty())
- result.label_hfill = labelFill(pit, row) / double(nlh);
+ row.label_hfill = labelFill(pit, row) / double(nlh);
}
// are there any hfills in the row?
if (nh) {
if (w > 0)
- result.hfill = w / nh;
+ row.hfill = w / 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!
&& !par.isNewline(row.endpos() - 1)
&& !disp_inset
) {
- result.separator = w / ns;
+ row.separator = w / ns;
} else if (is_rtl) {
- result.x += w;
+ row.x += w;
}
break;
}
case LYX_ALIGN_RIGHT:
- result.x += w;
+ row.x += w;
break;
case LYX_ALIGN_CENTER:
- result.x += w / 2;
+ row.x += w / 2;
break;
}
}
if (body_pos > 0
&& (body_pos > end || !par.isLineSeparator(body_pos - 1)))
{
- result.x += theFontMetrics(text_->getLabelFont(buffer, par)).
+ row.x += theFontMetrics(text_->getLabelFont(buffer, par)).
width(layout->labelsep);
if (body_pos <= end)
- result.x += result.label_hfill;
+ row.x += row.label_hfill;
}
}
-
- return result;
}
int TextMetrics::labelFill(pit_type const pit, Row const & row) const
{
- Buffer & buffer = *bv_->buffer();
+ Buffer & buffer = bv_->buffer();
Paragraph const & par = text_->getPar(pit);
pos_type last = par.beginOfBody();
if (text_->getPar(pit).layout()->margintype != MARGIN_MANUAL)
return 0;
// return the beginning of the body
- return text_->leftMargin(*bv_->buffer(), max_width_, pit);
+ return text_->leftMargin(bv_->buffer(), max_width_, pit);
}
-void TextMetrics::rowBreakPoint(int width, pit_type const pit,
- Row & row) const
+pit_type TextMetrics::rowBreakPoint(int width, pit_type const pit,
+ pit_type pos) const
{
- Buffer & buffer = *bv_->buffer();
+ Buffer & buffer = bv_->buffer();
ParagraphMetrics const & pm = par_metrics_[pit];
Paragraph const & par = text_->getPar(pit);
pos_type const end = par.size();
- pos_type const pos = row.pos();
- if (pos == end) {
- row.endpos(end);
- return;
- }
+ if (pos == end || width < 0)
+ return end;
- if (width < 0) {
- row.endpos(end);
- return;
- }
-
- Layout_ptr const & layout = par.layout();
+ LayoutPtr const & layout = par.layout();
- if (layout->margintype == MARGIN_RIGHT_ADDRESS_BOX) {
- row.endpos(addressBreakPoint(pos, par));
- return;
- }
+ if (layout->margintype == MARGIN_RIGHT_ADDRESS_BOX)
+ return addressBreakPoint(pos, par);
pos_type const body_pos = par.beginOfBody();
if (body_pos && point < body_pos)
point = body_pos;
- row.endpos(point);
+ return point;
}
-void TextMetrics::setRowWidth(int right_margin,
- pit_type const pit, Row & row) const
+int TextMetrics::rowWidth(int right_margin, pit_type const pit,
+ pos_type const first, pos_type const end) const
{
- Buffer & buffer = *bv_->buffer();
+ Buffer & buffer = bv_->buffer();
// get the pure distance
- pos_type const end = row.endpos();
ParagraphMetrics const & pm = par_metrics_[pit];
Paragraph const & par = text_->getPar(pit);
- int w = text_->leftMargin(buffer, max_width_, pit, row.pos());
+ int w = text_->leftMargin(buffer, max_width_, pit, first);
int label_end = labelEnd(pit);
pos_type const body_pos = par.beginOfBody();
- pos_type i = row.pos();
+ pos_type i = first;
if (i < end) {
FontIterator fi = FontIterator(buffer, *text_, par, i);
w = max(w, label_end);
}
- row.width(w + right_margin);
+ return w + right_margin;
}
-void TextMetrics::setHeightOfRow(pit_type const pit,
- Row & row)
+boost::tuple<int, int> TextMetrics::rowHeight(pit_type const pit, pos_type const first,
+ pos_type const end) const
{
Paragraph const & par = text_->getPar(pit);
// get the maximum ascent and the maximum descent
// 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_ptr const & layout = par.layout();
+ LayoutPtr 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 = text_->getFont(buffer, par, row.pos());
+ Buffer const & buffer = bv_->buffer();
+ Font font = text_->getFont(buffer, par, first);
Font::FONT_SIZE const tmpsize = font.size();
font = text_->getLayoutFont(buffer, pit);
Font::FONT_SIZE const size = font.size();
InsetList::const_iterator ii = par.insetlist.begin();
InsetList::const_iterator iend = par.insetlist.end();
for ( ; ii != iend; ++ii) {
- if (ii->pos >= row.pos() && ii->pos < row.endpos()) {
+ if (ii->pos >= first && ii->pos < end) {
maxasc = max(maxasc, ii->inset->ascent());
maxdesc = max(maxdesc, ii->inset->descent());
}
// This is not completely correct, but we can live with the small,
// cosmetic error for now.
int labeladdon = 0;
- pos_type const pos_end = row.endpos();
Font::FONT_SIZE maxsize =
- par.highestFontInRange(row.pos(), pos_end, size);
+ par.highestFontInRange(first, end, size);
if (maxsize > font.size()) {
// use standard paragraph font with the maximal size
Font maxfont = font;
++maxasc;
++maxdesc;
- row.ascent(maxasc);
ParagraphList const & pars = text_->paragraphs();
// is it a top line?
- if (row.pos() == 0) {
+ if (first == 0) {
BufferParams const & bufparams = buffer.params();
// some parskips VERY EASY IMPLEMENTATION
if (bufparams.paragraph_separation
&& prevpar.getLabelWidthString()
== par.getLabelWidthString()) {
layoutasc = layout->itemsep * dh;
- } else if (pit != 0 || row.pos() != 0) {
+ } else if (pit != 0 || first != 0) {
if (layout->topsep > 0)
layoutasc = layout->topsep * dh;
}
}
// is it a bottom line?
- if (row.endpos() >= par.size()) {
+ if (end >= par.size()) {
// add the layout spaces, for example before and after
// a section, or between the items of a itemize or enumerate
// environment
// main Text. The following test is thus bogus.
// Top and bottom margin of the document (only at top-level)
if (main_text_) {
- if (pit == 0 && row.pos() == 0)
+ if (pit == 0 && first == 0)
maxasc += 20;
if (pit + 1 == pit_type(pars.size()) &&
- row.endpos() == par.size() &&
- !(row.endpos() > 0 && par.isNewline(row.endpos() - 1)))
+ end == par.size() &&
+ !(end > 0 && par.isNewline(end - 1)))
maxdesc += 20;
}
- row.ascent(maxasc + labeladdon);
- row.descent(maxdesc);
+ return boost::make_tuple(maxasc + labeladdon, maxdesc);
}
pos_type TextMetrics::getColumnNearX(pit_type const pit,
Row const & row, int & x, bool & boundary) const
{
- Buffer const & buffer = *bv_->buffer();
+ Buffer const & buffer = bv_->buffer();
/// 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 = main_text_? 0 : bv_->coordCache().get(text_, pit).x_;
x -= xo;
- RowMetrics const r = computeRowMetrics(pit, row);
Paragraph const & par = text_->getPar(pit);
Bidi bidi;
bidi.computeTables(par, buffer, row);
pos_type vc = row.pos();
pos_type end = row.endpos();
pos_type c = 0;
- Layout_ptr const & layout = par.layout();
+ LayoutPtr const & layout = par.layout();
bool left_side = false;
pos_type body_pos = par.beginOfBody();
- double tmpx = r.x;
+ double tmpx = row.x;
double last_tmpx = tmpx;
if (body_pos > 0 &&
if (body_pos > 0 && c == body_pos - 1) {
FontMetrics const & fm = theFontMetrics(
text_->getLabelFont(buffer, par));
- tmpx += r.label_hfill + fm.width(layout->labelsep);
+ tmpx += row.label_hfill + fm.width(layout->labelsep);
if (par.isLineSeparator(body_pos - 1))
tmpx -= singleWidth(pit, body_pos - 1);
}
if (par.hfillExpansion(row, c)) {
tmpx += singleWidth(pit, c);
if (c >= body_pos)
- tmpx += r.hfill;
+ tmpx += row.hfill;
else
- tmpx += r.label_hfill;
+ tmpx += row.label_hfill;
} else if (par.isSeparator(c)) {
tmpx += singleWidth(pit, c);
if (c >= body_pos)
- tmpx += r.separator;
+ tmpx += row.separator;
} else {
tmpx += singleWidth(pit, c);
}
int TextMetrics::singleWidth(pit_type pit, pos_type pos) const
{
- Buffer const & buffer = *bv_->buffer();
+ Buffer const & buffer = bv_->buffer();
ParagraphMetrics const & pm = par_metrics_[pit];
return pm.singleWidth(pos, text_->getFont(buffer, text_->getPar(pit), pos));
}
+// only used for inset right now. should also be used for main text
+void TextMetrics::draw(PainterInfo & pi, int x, int y) const
+{
+ if (par_metrics_.empty())
+ return;
+
+ ParMetricsCache::const_iterator it = par_metrics_.begin();
+ ParMetricsCache::const_iterator const end = par_metrics_.end();
+ y -= it->second.ascent();
+ for (; it != end; ++it) {
+ ParagraphMetrics const & pmi = it->second;
+ y += pmi.ascent();
+ drawParagraph(pi, it->first, x, y);
+ y += pmi.descent();
+ }
+}
+
+
+void TextMetrics::drawParagraph(PainterInfo & pi, pit_type pit, int x, int y) const
+{
+// lyxerr << " paintPar: pit: " << pit << " at y: " << y << endl;
+ int const ww = bv_->workHeight();
+
+ bv_->coordCache().parPos()[text_][pit] = Point(x, y);
+
+ ParagraphMetrics const & pm = par_metrics_[pit];
+ if (pm.rows().empty())
+ return;
+
+ RowList::const_iterator const rb = pm.rows().begin();
+ RowList::const_iterator const re = pm.rows().end();
+
+ Bidi bidi;
+
+ y -= rb->ascent();
+ for (RowList::const_iterator rit = rb; rit != re; ++rit) {
+ y += rit->ascent();
+
+ bool const inside = (y + rit->descent() >= 0
+ && y - rit->ascent() < ww);
+ // it is not needed to draw on screen if we are not inside.
+ pi.pain.setDrawingEnabled(inside);
+ RowPainter rp(pi, *text_, pit, *rit, bidi, x, y);
+
+ // Row signature; has row changed since last paint?
+ bool row_has_changed = rit->changed();
+
+ if (!pi.full_repaint && !row_has_changed) {
+ // Paint the only the insets if the text itself is
+ // unchanged.
+ rp.paintOnlyInsets();
+ y += rit->descent();
+ continue;
+ }
+
+ // Paint the row if a full repaint has been requested or it has
+ // changed.
+ // Clear background of this row
+ // (if paragraph background was not cleared)
+ if (!pi.full_repaint && row_has_changed)
+ pi.pain.fillRectangle(x, y - rit->ascent(),
+ width(), rit->height(),
+ text_->backgroundColor());
+
+ // Instrumentation for testing row cache (see also
+ // 12 lines lower):
+ if (lyxerr.debugging(Debug::PAINTING)) {
+ if (text_->isMainText(bv_->buffer()))
+ LYXERR(Debug::PAINTING) << "{" <<
+ pi.full_repaint << row_has_changed << "}";
+ else
+ LYXERR(Debug::PAINTING) << "[" <<
+ pi.full_repaint << row_has_changed << "]";
+ }
+ rp.paintAppendix();
+ rp.paintDepthBar();
+ rp.paintChangeBar();
+ if (rit == rb)
+ rp.paintFirst();
+ rp.paintText();
+ if (rit + 1 == re)
+ rp.paintLast();
+ y += rit->descent();
+ }
+ // Re-enable screen drawing for future use of the painter.
+ pi.pain.setDrawingEnabled(true);
+
+ LYXERR(Debug::PAINTING) << "." << endl;
+}
+
+
+// only used for inset right now. should also be used for main text
+void TextMetrics::drawSelection(PainterInfo & pi, int x, int) const
+{
+ Cursor & cur = bv_->cursor();
+ if (!cur.selection())
+ return;
+ if (!ptr_cmp(cur.text(), text_))
+ return;
+
+ LYXERR(Debug::DEBUG)
+ << BOOST_CURRENT_FUNCTION
+ << "draw selection at " << x
+ << endl;
+
+ DocIterator beg = cur.selectionBegin();
+ DocIterator end = cur.selectionEnd();
+
+ // the selection doesn't touch the visible screen?
+ if (bv_funcs::status(bv_, beg) == bv_funcs::CUR_BELOW
+ || bv_funcs::status(bv_, end) == bv_funcs::CUR_ABOVE)
+ return;
+
+ ParagraphMetrics const & pm1 = par_metrics_[beg.pit()];
+ ParagraphMetrics const & pm2 = par_metrics_[end.pit()];
+ Row const & row1 = pm1.getRow(beg.pos(), beg.boundary());
+ Row const & row2 = pm2.getRow(end.pos(), end.boundary());
+
+ // clip above
+ int middleTop;
+ bool const clipAbove =
+ (bv_funcs::status(bv_, beg) == bv_funcs::CUR_ABOVE);
+ if (clipAbove)
+ middleTop = 0;
+ else
+ middleTop = bv_funcs::getPos(*bv_, beg, beg.boundary()).y_ + row1.descent();
+
+ // clip below
+ int middleBottom;
+ bool const clipBelow =
+ (bv_funcs::status(bv_, end) == bv_funcs::CUR_BELOW);
+ if (clipBelow)
+ middleBottom = bv_->workHeight();
+ else
+ middleBottom = bv_funcs::getPos(*bv_, end, end.boundary()).y_ - row2.ascent();
+
+ // start and end in the same line?
+ if (!(clipAbove || clipBelow) && &row1 == &row2)
+ // then only draw this row's selection
+ drawRowSelection(pi, x, row1, beg, end, false, false);
+ else {
+ if (!clipAbove) {
+ // get row end
+ DocIterator begRowEnd = beg;
+ begRowEnd.pos() = row1.endpos();
+ begRowEnd.boundary(true);
+
+ // draw upper rectangle
+ drawRowSelection(pi, x, row1, beg, begRowEnd, false, true);
+ }
+
+ if (middleTop < middleBottom) {
+ // draw middle rectangle
+ pi.pain.fillRectangle(x, middleTop, width(), middleBottom - middleTop,
+ Color::selection);
+ }
+
+ if (!clipBelow) {
+ // get row begin
+ DocIterator endRowBeg = end;
+ endRowBeg.pos() = row2.pos();
+ endRowBeg.boundary(false);
+
+ // draw low rectangle
+ drawRowSelection(pi, x, row2, endRowBeg, end, true, false);
+ }
+ }
+}
+
+
+void TextMetrics::drawRowSelection(PainterInfo & pi, int x, Row const & row,
+ DocIterator const & beg, DocIterator const & end,
+ bool drawOnBegMargin, bool drawOnEndMargin) const
+{
+ Buffer & buffer = bv_->buffer();
+ DocIterator cur = beg;
+ int x1 = text_->cursorX(*bv_, beg.top(), beg.boundary());
+ int x2 = text_->cursorX(*bv_, end.top(), end.boundary());
+ int y1 = bv_funcs::getPos(*bv_, cur, cur.boundary()).y_ - row.ascent();
+ int y2 = y1 + row.height();
+
+ // draw the margins
+ if (drawOnBegMargin) {
+ if (text_->isRTL(buffer, beg.paragraph()))
+ pi.pain.fillRectangle(x + x1, y1, width() - x1, y2 - y1, Color::selection);
+ else
+ pi.pain.fillRectangle(x, y1, x1, y2 - y1, Color::selection);
+ }
+
+ if (drawOnEndMargin) {
+ if (text_->isRTL(buffer, beg.paragraph()))
+ pi.pain.fillRectangle(x, y1, x2, y2 - y1, Color::selection);
+ else
+ pi.pain.fillRectangle(x + x2, y1, width() - x2, y2 - y1, Color::selection);
+ }
+
+ // if we are on a boundary from the beginning, it's probably
+ // a RTL boundary and we jump to the other side directly as this
+ // segement is 0-size and confuses the logic below
+ if (cur.boundary())
+ cur.boundary(false);
+
+ // go through row and draw from RTL boundary to RTL boundary
+ while (cur < end) {
+ bool drawNow = false;
+
+ // simplified cursorRight code below which does not
+ // descend into insets and which does not go into the
+ // next line. Compare the logic with the original cursorRight
+
+ // if left of boundary -> just jump to right side
+ // but for RTL boundaries don't, because: abc|DDEEFFghi -> abcDDEEF|Fghi
+ if (cur.boundary()) {
+ cur.boundary(false);
+ } else if (text_->isRTLBoundary(buffer, cur.paragraph(), cur.pos() + 1)) {
+ // in front of RTL boundary -> Stay on this side of the boundary because:
+ // ab|cDDEEFFghi -> abc|DDEEFFghi
+ ++cur.pos();
+ cur.boundary(true);
+ drawNow = true;
+ } else {
+ // move right
+ ++cur.pos();
+
+ // line end?
+ if (cur.pos() == row.endpos())
+ cur.boundary(true);
+ }
+
+ if (x1 == -1) {
+ // the previous segment was just drawn, now the next starts
+ x1 = text_->cursorX(*bv_, cur.top(), cur.boundary());
+ }
+
+ if (!(cur < end) || drawNow) {
+ x2 = text_->cursorX(*bv_, cur.top(), cur.boundary());
+ pi.pain.fillRectangle(x + min(x1,x2), y1, abs(x2 - x1), y2 - y1,
+ Color::selection);
+
+ // reset x1, so it is set again next round (which will be on the
+ // right side of a boundary or at the selection end)
+ x1 = -1;
+ }
+ }
+}
+
//int Text::pos2x(pit_type pit, pos_type pos) const
//{
// ParagraphMetrics const & pm = par_metrics_[pit];