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optimize QPainterPath::addText()

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Signed-off-by: Ivailo Monev <xakepa10@gmail.com>
This commit is contained in:
Ivailo Monev 2022-01-21 17:19:40 +02:00
parent 1604419297
commit 3edd93fac4
1 changed files with 16 additions and 13 deletions
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29
src/gui/painting/qpainterpath.cpp
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@ -1088,7 +1088,7 @@ void QPainterPath::addText(const QPointF &point, const QFont &f, const QString &
ensureData();
detach();
// qDebug() << Q_FUNC_INFO << point << f << text << direction;
// qDebug() << Q_FUNC_INFO << point << f << text;
static const QTextEngine::ShaperFlags shaperflags = 0;
@ -1097,6 +1097,8 @@ void QPainterPath::addText(const QPointF &point, const QFont &f, const QString &
if (scriptdetection) {
qreal xoffset = 0.0;
QUnicodeTables::Script inheritedscript = QUnicodeTables::Common;
QGlyphLayoutArray<2> glyphs;
for (int i = 0; i < text.size(); i++) {
int nglyphs = 1;
QChar textchars[2] = { text.at(i), 0 };
@ -1135,7 +1137,6 @@ void QPainterPath::addText(const QPointF &point, const QFont &f, const QString &
}
}
QGlyphLayoutArray<2> glyphs;
engine->stringToCMap(textchars, nglyphs, &glyphs, &nglyphs, shaperflags);
engine->addOutlineToPath(point.x() + xoffset, point.y(), glyphs, this);
@ -1158,19 +1159,21 @@ void QPainterPath::addText(const QPointF &point, const QFont &f, const QString &
engine->addOutlineToPath(point.x(), point.y(), glyphs, this);
}
const QFontMetricsF fontmetrics(f);
const qreal linewidth = fontmetrics.lineWidth();
const qreal textwidth = (fontmetrics.width('x') * text.size());
if (f.underline() || f.overline() || f.strikeOut()) {
const QFontMetricsF fontmetrics(f);
const qreal linewidth = fontmetrics.lineWidth();
const qreal textwidth = (fontmetrics.width('x') * text.size());
#if 0
if (f.underline()) {
addRect(point.x(), point.y() + fontmetrics.underlinePos(), textwidth, linewidth);
}
if (f.underline()) {
addRect(point.x(), point.y() + fontmetrics.underlinePos(), textwidth, linewidth);
}
#endif
if (f.overline()) {
addRect(point.x(), point.y() - fontmetrics.overlinePos(), textwidth, linewidth);
}
if (f.strikeOut()) {
addRect(point.x(), point.y() - fontmetrics.strikeOutPos(), textwidth, linewidth);
if (f.overline()) {
addRect(point.x(), point.y() - fontmetrics.overlinePos(), textwidth, linewidth);
}
if (f.strikeOut()) {
addRect(point.x(), point.y() - fontmetrics.strikeOutPos(), textwidth, linewidth);
}
}
}