}
+void TextMetrics::forget(pit_type pit)
+{
+ par_metrics_.erase(pit);
+}
+
+
pair<pit_type, ParagraphMetrics const *> TextMetrics::first() const
{
ParMetricsCache::const_iterator it = par_metrics_.begin();
}
+pair<pit_type, ParagraphMetrics const *> TextMetrics::firstVisible() const
+{
+ // This only works in the main text, I think (bottom > 0)
+ LASSERT(text_->isMainText(), return first());
+ auto it = find_if(par_metrics_.begin(), par_metrics_.end(),
+ [] (ParMetricsCache::value_type const & p) {
+ return p.second.hasPosition() && p.second.bottom() > 0;
+ });
+ return make_pair(it->first, &it->second);
+}
+
pair<pit_type, ParagraphMetrics const *> TextMetrics::last() const
{
LBUFERR(!par_metrics_.empty());
// do it and update its position.
redoParagraph(pit);
- par_metrics_[pit].setPosition(last.second.position()
- + last.second.descent() + par_metrics_[pit].ascent());
+ par_metrics_[pit].setPosition(last.second.bottom() + par_metrics_[pit].ascent());
updatePosCache(pit);
}
pit_type const pit = first.first - 1;
// do it and update its position.
redoParagraph(pit);
- par_metrics_[pit].setPosition(first.second.position()
- - first.second.ascent() - par_metrics_[pit].descent());
+ par_metrics_[pit].setPosition(first.second.top() - par_metrics_[pit].descent());
updatePosCache(pit);
}
+void TextMetrics::updateMetrics(pit_type const anchor_pit, int const anchor_ypos,
+ int const bv_height)
+{
+ LASSERT(text_->isMainText(), return);
+
+ // Forget existing positions
+ for (auto & pm_pair : par_metrics_)
+ pm_pair.second.resetPosition();
+
+ if (!contains(anchor_pit))
+ // Rebreak anchor paragraph.
+ redoParagraph(anchor_pit);
+ ParagraphMetrics & anchor_pm = parMetrics(anchor_pit);
+ anchor_pm.setPosition(anchor_ypos);
+
+ // Redo paragraphs above anchor if necessary.
+ int y1 = anchor_ypos - anchor_pm.ascent();
+ // We are now just above the anchor paragraph.
+ pit_type pit1 = anchor_pit - 1;
+ for (; pit1 >= 0 && y1 > 0; --pit1) {
+ if (!contains(pit1))
+ redoParagraph(pit1);
+ ParagraphMetrics & pm = parMetrics(pit1);
+ y1 -= pm.descent();
+ // Save the paragraph position in the cache.
+ pm.setPosition(y1);
+ y1 -= pm.ascent();
+ }
+
+ // Redo paragraphs below the anchor if necessary.
+ int y2 = anchor_ypos + anchor_pm.descent();
+ // We are now just below the anchor paragraph.
+ pit_type pit2 = anchor_pit + 1;
+ pit_type const npit = pit_type(text_->paragraphs().size());
+ for (; pit2 < npit && y2 < bv_height; ++pit2) {
+ if (!contains(pit2))
+ redoParagraph(pit2);
+ ParagraphMetrics & pm = parMetrics(pit2);
+ y2 += pm.ascent();
+ // Save the paragraph position in the cache.
+ pm.setPosition(y2);
+ y2 += pm.descent();
+ }
+
+ LYXERR(Debug::PAINTING, "TextMetrics::updateMetrics "
+ << " anchor pit = " << anchor_pit
+ << " anchor ypos = " << anchor_ypos
+ << " y1 = " << y1
+ << " y2 = " << y2
+ << " pit1 = " << pit1
+ << " pit2 = " << pit2);
+}
+
+
bool TextMetrics::metrics(MetricsInfo const & mi, Dimension & dim, int min_width)
{
LBUFERR(mi.base.textwidth > 0);
MetricsInfo mi(bv_, font.fontInfo(), w, mc, e.pos == 0, tight_);
mi.base.outer_font = displayFont(pit, e.pos).fontInfo();
e.inset->metrics(mi, dim);
- /* FIXME: This is a kind of hack. This allows InsetMathHull to
- * state that it needs some elbow room beyond its width, in
- * order to fit the numbering and/or the left margin (with
- * left alignment), which are outside of the inset itself.
+ /* FIXME: This is a hack. This allows InsetMathHull to state
+ * that it needs some elbow room beyond its width, in order to
+ * fit the numbering and/or the left margin (with left
+ * alignment), which are outside of the inset itself.
*
* To this end, InsetMathHull::metrics() sets a value in
- * MetricsInfo::extrawidth and this value is recorded later in
- * the corresponding row element's `extra' field. See ticket
- * #12320 for details.
+ * MetricsInfo::extrawidth and this value is added later to
+ * the width of the row that contains the inset (when this row
+ * is tight or shorter than the max allowed width).
+ *
+ * See ticket #12320 for details.
*/
extrawidths[e.inset] = mi.extrawidth;
+
if (!insetCache.has(e.inset) || insetCache.dim(e.inset) != dim) {
insetCache.add(e.inset, dim);
changed = true;
}
// Transform the paragraph into a single row containing all the elements.
- Row bigrow = tokenizeParagraph(pit);
- // Add the needed extra width to the row elements of the insets
- for (auto & e : bigrow)
- if (e.type == Row::INSET)
- e.extra = extrawidths[e.inset];
+ Row const bigrow = tokenizeParagraph(pit);
// Split the row in several rows fitting in available width
pm.rows() = breakParagraph(bigrow);
+ // Add the needed extra width to the rows that contain the insets that request it
+ for (Row & row : pm.rows())
+ for (Row::Element & e : row)
+ if (e.type == Row::INSET && (row.width() < max_width_ || tight_))
+ row.dim().wid += extrawidths[e.inset];
+
/* If there is more than one row, expand the text to the full
* allowable width. This setting here is needed for the
* setRowAlignment() below. We do nothing when tight insets are
// Last row in paragraph is flushed
rows.back().flushed(true);
cleanupRow(rows.back(), true);
+ // Is there an end-of-paragraph change?
+ if (bigrow.needsChangeBar())
+ rows.back().needsChangeBar(true);
}
return rows;
ParMetricsCache::const_iterator last = et;
--last;
- ParagraphMetrics const & pm = it->second;
-
- if (y < it->second.position() - pm.ascent()) {
+ if (y < it->second.top()) {
// We are looking for a position that is before the first paragraph in
// the cache (which is in priciple off-screen, that is before the
// visible part.
return pit;
}
- ParagraphMetrics const & pm_last = par_metrics_[last->first];
-
- if (y >= last->second.position() + pm_last.descent()) {
+ if (y >= par_metrics_[last->first].bottom()) {
// We are looking for a position that is after the last paragraph in
// the cache (which is in priciple off-screen), that is before the
// visible part.
}
for (; it != et; ++it) {
- LYXERR(Debug::PAINTING, "examining: pit: " << it->first
- << " y: " << it->second.position());
-
- ParagraphMetrics const & pm2 = par_metrics_[it->first];
+ // LYXERR(Debug::PAINTING, "examining: pit: " << it->first
+ // << " y: " << it->second.position());
- if (it->first >= pit && it->second.position() - pm2.ascent() <= y) {
+ if (it->first >= pit && it->second.top() <= y) {
pit = it->first;
yy = it->second.position();
}
{
ParagraphMetrics const & pm = par_metrics_[pit];
- int yy = pm.position() - pm.ascent();
+ int yy = pm.top();
LBUFERR(!pm.rows().empty());
RowList::const_iterator rit = pm.rows().begin();
RowList::const_iterator rlast = pm.rows().end();
if (pm.rows().empty())
return;
size_t const nrows = pm.rows().size();
+ int const wh = bv_->workHeight();
// Remember left and right margin for drawing math numbers
- Changer changeleft = changeVar(pi.leftx, x + leftMargin(pit));
- Changer changeright = changeVar(pi.rightx, x + width() - rightMargin(pit));
+ Changer changeleft, changeright;
+ if (text_->isRTL(pit)) {
+ changeleft = changeVar(pi.leftx, x + rightMargin(pit));
+ changeright = changeVar(pi.rightx, x + width() - leftMargin(pit));
+ } else {
+ changeleft = changeVar(pi.leftx, x + leftMargin(pit));
+ changeright = changeVar(pi.rightx, x + width() - rightMargin(pit));
+ }
// Use fast lane in nodraw stage.
if (pi.pain.isNull()) {
if (i)
y += row.ascent();
- RowPainter rp(pi, *text_, row, row_x, y);
-
- rp.paintOnlyInsets();
+ // It is not needed to draw on screen if we are not inside
+ bool const inside = (y + row.descent() >= 0 && y - row.ascent() < wh);
+ if (inside) {
+ 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();
}
}
- if (text_->isRTL(pit))
- swap(pi.leftx, pi.rightx);
-
BookmarksSection::BookmarkPosList bpl =
theSession().bookmarks().bookmarksInPar(bv_->buffer().fileName(), pm.id());
// It is not needed to draw on screen if we are not inside.
bool const inside = (y + row.descent() >= 0
- && y - row.ascent() < ww);
+ && y - row.ascent() < wh);
if (!inside) {
// Inset positions have already been set in nodraw stage.
y += row.descent();
projects / lyx.git / blobdiff