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Optimise rowBreakPoint and setHeightOfRow as well.

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git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@7378 a592a061-630c-0410-9148-cb99ea01b6c8
This commit is contained in:
Asger Ottar Alstrup 2003-07-27 11:16:25 +00:00
parent 330fdeda26
commit 60896529f0
2 changed files with 77 additions and 23 deletions
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2
src/ChangeLog
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@ -6,6 +6,8 @@
* text.C (fill): Optimise algorithm to exploit that we can reuse
the LyXFont for many characters.
(setHeightOfRow): Same thing.
(rowBreakPoint): Same thing.
2003-07-26 Asger Alstrup <alstrup@local>

64
src/text.C
View File

@ -817,6 +817,11 @@ pos_type LyXText::rowBreakPoint(Row const & row) const
bool fullrow = false;
pos_type i = pos;
// We re-use the font resolution for the entire font span when possible
LyXFont font = getFont(bv()->buffer(), pit, i);
lyx::pos_type endPosOfFontSpan = pit->getEndPosOfFontSpan(i);
for (; i < last; ++i) {
if (pit->isNewline(i)) {
point = i;
@ -838,7 +843,27 @@ pos_type LyXText::rowBreakPoint(Row const & row) const
thiswidth = left_margin - x;
thiswidth += singleWidth(pit, i, c);
} else {
// Manual inlined optimised version of common case of "thiswidth = singleWidth(pit, i, c);"
if (IsPrintable(c)) {
if (pos > endPosOfFontSpan) {
// We need to get the next font
font = getFont(bv()->buffer(), pit, i);
endPosOfFontSpan = pit->getEndPosOfFontSpan(i);
}
if (! font.language()->RightToLeft()) {
thiswidth = font_metrics::width(c, font);
} else {
// Fall-back to normal case
thiswidth = singleWidth(pit, i, c);
// And flush font cache
endPosOfFontSpan = 0;
}
} else {
// Fall-back to normal case
thiswidth = singleWidth(pit, i, c);
// And flush font cache
endPosOfFontSpan = 0;
}
}
x += thiswidth;
@ -1098,11 +1123,37 @@ void LyXText::setHeightOfRow(RowList::iterator rit)
int maxwidth = 0;
if (!pit->empty()) {
// We re-use the font resolution for the entire font span when possible
LyXFont font = getFont(bv()->buffer(), pit, rit->pos());
lyx::pos_type endPosOfFontSpan = pit->getEndPosOfFontSpan(rit->pos());
// Optimisation
Paragraph const & par = *pit;
// Check if any insets are larger
for (pos_type pos = rit->pos(); pos <= pos_end; ++pos) {
if (pit->isInset(pos)) {
LyXFont const & tmpfont = getFont(bv()->buffer(), pit, pos);
InsetOld * tmpinset = pit->getInset(pos);
// Manual inlined optimised version of common case of "maxwidth += singleWidth(pit, pos);"
char const c = par.getChar(pos);
if (IsPrintable(c)) {
if (pos > endPosOfFontSpan) {
// We need to get the next font
font = getFont(bv()->buffer(), pit, pos);
endPosOfFontSpan = par.getEndPosOfFontSpan(pos);
}
if (! font.language()->RightToLeft()) {
maxwidth += font_metrics::width(c, font);
} else {
// Fall-back to normal case
maxwidth += singleWidth(pit, pos, c);
// And flush font cache
endPosOfFontSpan = 0;
}
} else {
// Special handling of insets - are any larger?
if (par.isInset(pos)) {
LyXFont const tmpfont = getFont(bv()->buffer(), pit, pos);
InsetOld const * tmpinset = par.getInset(pos);
if (tmpinset) {
#if 1 // this is needed for deep update on initialitation
#warning inset->update FIXME
@ -1120,10 +1171,11 @@ void LyXText::setHeightOfRow(RowList::iterator rit)
#endif
}
} else {
// Manual inlined optimised version of common case of "maxwidth += singleWidth(pit, pos);"
char const c = pit->getChar(pos);
// Fall-back to normal case
maxwidth += singleWidth(pit, pos, c);
// And flush font cache
endPosOfFontSpan = 0;
}
}
}
}