#include "buffer.h"
#include "bufferparams.h"
#include "BufferView.h"
+#include "paragraph_funcs.h"
#include "pariterator.h"
#include "coordcache.h"
#include "debug.h"
#include "FontIterator.h"
#include "LColor.h"
#include "lyxlength.h"
+#include "lyxrc.h"
#include "lyxtext.h"
#include "metricsinfo.h"
#include "ParagraphParameters.h"
par.setBeginOfBody();
pos_type z = 0;
+ // maximum pixel width of a row
+ int width = max_width_ - right_margin; // - leftMargin(buffer, max_width_, pit, row);
do {
Row row(z);
- text_->rowBreakPoint(buffer, right_margin, max_width_, pit, row);
- text_->setRowWidth(buffer, right_margin, max_width_, pit, row);
- text_->setHeightOfRow(*bv_, pit, row);
+ 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();
if (z > 0 && par.isNewline(z - 1)) {
Row row(z - 1);
row.endpos(z - 1);
- text_->setRowWidth(buffer, right_margin, max_width_, pit, row);
- text_->setHeightOfRow(*bv_, pit, row);
+ setRowWidth(right_margin, pit, row);
+ setHeightOfRow(pit, row);
pm.rows().push_back(row);
pm.dim().des += row.height();
}
par_metrics_[pit] = pm;
+ // Update the row change statuses. The painter will need that info
+ // in order to know which row has to be repainted.
+ par_metrics_[pit].updateRowChangeStatus();
+
return changed;
}
}
+namespace {
+
+// this needs special handling - only newlines count as a break point
+pos_type addressBreakPoint(pos_type i, Paragraph const & par)
+{
+ pos_type const end = par.size();
+
+ for (; i < end; ++i)
+ if (par.isNewline(i))
+ return i + 1;
+
+ return end;
+}
+
+};
+
+
+int TextMetrics::labelEnd(pit_type const pit) const
+{
+ // labelEnd is only needed if the layout fills a flushleft label.
+ if (text_->getPar(pit).layout()->margintype != MARGIN_MANUAL)
+ return 0;
+ // return the beginning of the body
+ return text_->leftMargin(*bv_->buffer(), max_width_, pit);
+}
+
+
+void TextMetrics::rowBreakPoint(int width, pit_type const pit,
+ Row & row) const
+{
+ Buffer & buffer = *bv_->buffer();
+ 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 (width < 0) {
+ row.endpos(end);
+ return;
+ }
+
+ LyXLayout_ptr const & layout = par.layout();
+
+ if (layout->margintype == MARGIN_RIGHT_ADDRESS_BOX) {
+ row.endpos(addressBreakPoint(pos, par));
+ return;
+ }
+
+ pos_type const body_pos = par.beginOfBody();
+
+
+ // Now we iterate through until we reach the right margin
+ // or the end of the par, then choose the possible break
+ // nearest that.
+
+ int label_end = labelEnd(pit);
+ int const left = text_->leftMargin(buffer, max_width_, pit, pos);
+ int x = left;
+
+ // pixel width since last breakpoint
+ int chunkwidth = 0;
+
+ FontIterator fi = FontIterator(buffer, *text_, par, pos);
+ pos_type point = end;
+ pos_type i = pos;
+ FontMetrics const & fm = theFontMetrics(text_->getLabelFont(buffer, par));
+ for ( ; i < end; ++i, ++fi) {
+ char_type const c = par.getChar(i);
+ int thiswidth = text_->singleWidth(par, i, c, *fi);
+
+ // add the auto-hfill from label end to the body
+ if (body_pos && i == body_pos) {
+ docstring lsep = from_utf8(layout->labelsep);
+ int add = fm.width(lsep);
+ if (par.isLineSeparator(i - 1))
+ add -= text_->singleWidth(buffer, par, i - 1);
+
+ add = std::max(add, label_end - x);
+ thiswidth += add;
+ }
+
+ x += thiswidth;
+ chunkwidth += thiswidth;
+
+ // break before a character that will fall off
+ // the right of the row
+ if (x >= width) {
+ // if no break before, break here
+ if (point == end || chunkwidth >= width - left) {
+ if (i > pos)
+ point = i;
+ else
+ point = i + 1;
+
+ }
+ // exit on last registered breakpoint:
+ break;
+ }
+
+ if (par.isNewline(i)) {
+ point = i + 1;
+ break;
+ }
+ // Break before...
+ if (i + 1 < end) {
+ if (par.isInset(i + 1) && par.getInset(i + 1)->display()) {
+ point = i + 1;
+ break;
+ }
+ // ...and after.
+ if (par.isInset(i) && par.getInset(i)->display()) {
+ point = i + 1;
+ break;
+ }
+ }
+
+ if (!par.isInset(i) || par.getInset(i)->isChar()) {
+ // some insets are line separators too
+ if (par.isLineSeparator(i)) {
+ // register breakpoint:
+ point = i + 1;
+ chunkwidth = 0;
+ }
+ }
+ }
+
+ // maybe found one, but the par is short enough.
+ if (i == end && x < width)
+ point = end;
+
+ // manual labels cannot be broken in LaTeX. But we
+ // want to make our on-screen rendering of footnotes
+ // etc. still break
+ if (body_pos && point < body_pos)
+ point = body_pos;
+
+ row.endpos(point);
+}
+
+
+void TextMetrics::setRowWidth(int right_margin,
+ pit_type const pit, Row & row) const
+{
+ Buffer & buffer = *bv_->buffer();
+ // get the pure distance
+ pos_type const end = row.endpos();
+
+ Paragraph const & par = text_->getPar(pit);
+ docstring const labelsep = from_utf8(par.layout()->labelsep);
+ int w = text_->leftMargin(buffer, max_width_, pit, row.pos());
+ int label_end = labelEnd(pit);
+
+ pos_type const body_pos = par.beginOfBody();
+ pos_type i = row.pos();
+
+ FontMetrics const & fm = theFontMetrics(text_->getLabelFont(buffer, par));
+
+ if (i < end) {
+ FontIterator fi = FontIterator(buffer, *text_, par, i);
+ for ( ; i < end; ++i, ++fi) {
+ if (body_pos > 0 && i == body_pos) {
+ w += fm.width(labelsep);
+ if (par.isLineSeparator(i - 1))
+ w -= text_->singleWidth(buffer, par, i - 1);
+ w = max(w, label_end);
+ }
+ char_type const c = par.getChar(i);
+ w += text_->singleWidth(par, i, c, *fi);
+ }
+ }
+
+ if (body_pos > 0 && body_pos >= end) {
+ w += fm.width(labelsep);
+ if (end > 0 && par.isLineSeparator(end - 1))
+ w -= text_->singleWidth(buffer, par, end - 1);
+ w = max(w, label_end);
+ }
+
+ row.width(w + right_margin);
+}
+
+
+void TextMetrics::setHeightOfRow(pit_type const pit,
+ Row & row)
+{
+ 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 :)
+ LyXLayout_ptr 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();
+ LyXFont font = text_->getFont(buffer, par, row.pos());
+ LyXFont::FONT_SIZE const tmpsize = font.size();
+ font = text_->getLayoutFont(buffer, pit);
+ LyXFont::FONT_SIZE const size = font.size();
+ font.setSize(tmpsize);
+
+ LyXFont labelfont = text_->getLabelFont(buffer, par);
+
+ FontMetrics const & labelfont_metrics = theFontMetrics(labelfont);
+ FontMetrics const & fontmetrics = theFontMetrics(font);
+
+ // these are minimum values
+ double const spacing_val = layout->spacing.getValue()
+ * text_->spacing(buffer, par);
+ //lyxerr << "spacing_val = " << spacing_val << endl;
+ int maxasc = int(fontmetrics.maxAscent() * spacing_val);
+ int maxdesc = int(fontmetrics.maxDescent() * spacing_val);
+
+ // insets may be taller
+ 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()) {
+ maxasc = max(maxasc, ii->inset->ascent());
+ maxdesc = max(maxdesc, ii->inset->descent());
+ }
+ }
+
+ // 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;
+ pos_type const pos_end = row.endpos();
+
+ LyXFont::FONT_SIZE maxsize =
+ par.highestFontInRange(row.pos(), pos_end, size);
+ if (maxsize > font.size()) {
+ font.setSize(maxsize);
+ maxasc = max(maxasc, fontmetrics.maxAscent());
+ maxdesc = max(maxdesc, fontmetrics.maxDescent());
+ }
+
+ // This is nicer with box insets:
+ ++maxasc;
+ ++maxdesc;
+
+ row.ascent(maxasc);
+ ParagraphList const & pars = text_->paragraphs();
+
+ // is it a top line?
+ if (row.pos() == 0) {
+ BufferParams const & bufparams = buffer.params();
+ // some parksips VERY EASY IMPLEMENTATION
+ if (bufparams.paragraph_separation
+ == BufferParams::PARSEP_SKIP
+ && pit > 0
+ && ((layout->isParagraph() && par.getDepth() == 0)
+ || (pars[pit - 1].layout()->isParagraph()
+ && pars[pit - 1].getDepth() == 0)))
+ {
+ maxasc += bufparams.getDefSkip().inPixels(*bv_);
+ }
+
+ if (par.params().startOfAppendix())
+ maxasc += int(3 * dh);
+
+ // This is special code for the chapter, since the label of this
+ // layout is printed in an extra row
+ if (layout->counter == "chapter"
+ && !par.params().labelString().empty()) {
+ labeladdon = int(labelfont_metrics.maxHeight()
+ * layout->spacing.getValue()
+ * text_->spacing(buffer, par));
+ }
+
+ // special code for the top label
+ if ((layout->labeltype == LABEL_TOP_ENVIRONMENT
+ || layout->labeltype == LABEL_BIBLIO
+ || layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)
+ && isFirstInSequence(pit, pars)
+ && !par.getLabelstring().empty())
+ {
+ labeladdon = int(
+ labelfont_metrics.maxHeight()
+ * layout->spacing.getValue()
+ * text_->spacing(buffer, par)
+ + (layout->topsep + layout->labelbottomsep) * dh);
+ }
+
+ // Add the layout spaces, for example before and after
+ // a section, or between the items of a itemize or enumerate
+ // environment.
+
+ pit_type prev = depthHook(pit, pars, 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;
+ }
+
+ prev = outerHook(pit, pars);
+ 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);
+ }
+ }
+ }
+
+ // is it a bottom line?
+ if (row.endpos() >= par.size()) {
+ // 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;
+ double usual = 0;
+ double unusual = 0;
+
+ if (pars[cpit].getDepth() > pars[nextpit].getDepth()) {
+ usual = pars[cpit].layout()->bottomsep * dh;
+ cpit = depthHook(cpit, pars, 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);
+ }
+ }
+ }
+
+ // 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 LyXText. 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)
+ maxasc += 20;
+ if (pit + 1 == pit_type(pars.size()) &&
+ row.endpos() == par.size())
+ maxdesc += 20;
+ }
+
+ row.ascent(maxasc + labeladdon);
+ row.descent(maxdesc);
+}
+
+
+// x is an absolute screen coord
+// returns the column near the specified x-coordinate of the row
+// x is set to the real beginning of this column
+pos_type TextMetrics::getColumnNearX(pit_type const pit,
+ Row const & row, int & x, bool & boundary) const
+{
+ Buffer const & buffer = *bv_->buffer();
+
+ /// For the main LyXText, 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);
+
+ pos_type vc = row.pos();
+ pos_type end = row.endpos();
+ pos_type c = 0;
+ LyXLayout_ptr const & layout = par.layout();
+
+ bool left_side = false;
+
+ pos_type body_pos = par.beginOfBody();
+
+ double tmpx = r.x;
+ double last_tmpx = tmpx;
+
+ if (body_pos > 0 &&
+ (body_pos > end || !par.isLineSeparator(body_pos - 1)))
+ body_pos = 0;
+
+ // check for empty row
+ if (vc == end) {
+ x = int(tmpx) + xo;
+ return 0;
+ }
+
+ frontend::FontMetrics const & fm
+ = theFontMetrics(text_->getLabelFont(buffer, par));
+
+ while (vc < end && tmpx <= x) {
+ c = text_->bidi.vis2log(vc);
+ last_tmpx = tmpx;
+ if (body_pos > 0 && c == body_pos - 1) {
+ // FIXME UNICODE
+ docstring const lsep = from_utf8(layout->labelsep);
+ tmpx += r.label_hfill + fm.width(lsep);
+ if (par.isLineSeparator(body_pos - 1))
+ tmpx -= text_->singleWidth(buffer, par, body_pos - 1);
+ }
+
+ if (par.hfillExpansion(row, c)) {
+ tmpx += text_->singleWidth(buffer, par, c);
+ if (c >= body_pos)
+ tmpx += r.hfill;
+ else
+ tmpx += r.label_hfill;
+ } else if (par.isSeparator(c)) {
+ tmpx += text_->singleWidth(buffer, par, c);
+ if (c >= body_pos)
+ tmpx += r.separator;
+ } else {
+ tmpx += text_->singleWidth(buffer, par, c);
+ }
+ ++vc;
+ }
+
+ if ((tmpx + last_tmpx) / 2 > x) {
+ tmpx = last_tmpx;
+ left_side = true;
+ }
+
+ BOOST_ASSERT(vc <= end); // This shouldn't happen.
+
+ boundary = false;
+ // This (rtl_support test) is not needed, but gives
+ // some speedup if rtl_support == false
+ bool const lastrow = lyxrc.rtl_support && row.endpos() == par.size();
+
+ // If lastrow is false, we don't need to compute
+ // the value of rtl.
+ bool const rtl = lastrow ? text_->isRTL(buffer, par) : false;
+ if (lastrow &&
+ ((rtl && left_side && vc == row.pos() && x < tmpx - 5) ||
+ (!rtl && !left_side && vc == end && x > tmpx + 5)))
+ c = end;
+ else if (vc == row.pos()) {
+ c = text_->bidi.vis2log(vc);
+ if (text_->bidi.level(c) % 2 == 1)
+ ++c;
+ } else {
+ c = text_->bidi.vis2log(vc - 1);
+ bool const rtl = (text_->bidi.level(c) % 2 == 1);
+ if (left_side == rtl) {
+ ++c;
+ boundary = text_->bidi.isBoundary(buffer, par, c);
+ }
+ }
+
+// I believe this code is not needed anymore (Jug 20050717)
+#if 0
+ // The following code is necessary because the cursor position past
+ // the last char in a row is logically equivalent to that before
+ // the first char in the next row. That's why insets causing row
+ // divisions -- Newline and display-style insets -- must be treated
+ // specially, so cursor up/down doesn't get stuck in an air gap -- MV
+ // Newline inset, air gap below:
+ if (row.pos() < end && c >= end && par.isNewline(end - 1)) {
+ if (text_->bidi.level(end -1) % 2 == 0)
+ tmpx -= text_->singleWidth(buffer, par, end - 1);
+ else
+ tmpx += text_->singleWidth(buffer, par, end - 1);
+ c = end - 1;
+ }
+
+ // Air gap above display inset:
+ if (row.pos() < end && c >= end && end < par.size()
+ && par.isInset(end) && par.getInset(end)->display()) {
+ c = end - 1;
+ }
+ // Air gap below display inset:
+ if (row.pos() < end && c >= end && par.isInset(end - 1)
+ && par.getInset(end - 1)->display()) {
+ c = end - 1;
+ }
+#endif
+
+ x = int(tmpx) + xo;
+ pos_type const col = c - row.pos();
+
+ if (!c || end == par.size())
+ return col;
+
+ if (c==end && !par.isLineSeparator(c-1) && !par.isNewline(c-1)) {
+ boundary = true;
+ return col;
+ }
+
+ return min(col, end - 1 - row.pos());
+}
+
+
+pos_type TextMetrics::x2pos(pit_type pit, int row, int x) const
+{
+ ParagraphMetrics const & pm = parMetrics(pit);
+ BOOST_ASSERT(!pm.rows().empty());
+ BOOST_ASSERT(row < int(pm.rows().size()));
+ bool bound = false;
+ Row const & r = pm.rows()[row];
+ return r.pos() + getColumnNearX(pit, r, x, bound);
+}
+
+
+//int LyXText::pos2x(pit_type pit, pos_type pos) const
+//{
+// ParagraphMetrics const & pm = parMetrics(pit);
+// Row const & r = pm.rows()[row];
+// int x = 0;
+// pos -= r.pos();
+//}
+
+
int defaultRowHeight()
{
return int(theFontMetrics(LyXFont(LyXFont::ALL_SANE)).maxHeight() * 1.2);
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