AuroraMiddleware/qt5base-lts
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QtGui: use reserve to optimize memory allocation.

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Change-Id: I34a571b67840557de19ab496cadebd698c7f4f6a
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
This commit is contained in:
Anton Kudryavtsev 2016-02-24 15:53:59 +03:00
parent 8dc024adc6
commit 97965a0908
3 changed files with 5 additions and 1 deletions
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2
src/gui/kernel/qhighdpiscaling_p.h
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@ -473,6 +473,7 @@ QVector<T> fromNativePixels(const QVector<T> &pixelValues, const QWindow *window
return pixelValues;
QVector<T> pointValues;
pointValues.reserve(pixelValues.size());
for (const T &pixelValue : pixelValues)
pointValues.append(pixelValue / QHighDpiScaling::factor(window));
return pointValues;
@ -486,6 +487,7 @@ QVector<T> toNativePixels(const QVector<T> &pointValues, const QWindow *window)
return pointValues;
QVector<T> pixelValues;
pixelValues.reserve(pointValues.size());
for (const T &pointValue : pointValues)
pixelValues.append(pointValue * QHighDpiScaling::factor(window));
return pixelValues;

2
src/gui/kernel/qwindowsysteminterface.cpp
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@ -928,7 +928,7 @@ static QWindowSystemInterface::TouchPoint touchPoint(const QTouchEvent::TouchPoi
static QList<struct QWindowSystemInterface::TouchPoint> touchPointList(const QList<QTouchEvent::TouchPoint>& pointList)
{
QList<struct QWindowSystemInterface::TouchPoint> newList;
newList.reserve(pointList.size());
for (const QTouchEvent::TouchPoint &p : pointList)
newList.append(touchPoint(p));

2
src/gui/text/qfontsubset.cpp
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@ -624,6 +624,7 @@ static QTtfTable generateName(const QVector<QTtfNameRecord> &name);
static QTtfTable generateName(const qttf_name_table &name)
{
QVector<QTtfNameRecord> list;
list.reserve(5);
QTtfNameRecord rec;
rec.nameId = 0;
rec.value = name.copyright;
@ -1061,6 +1062,7 @@ static QVector<QTtfTable> generateGlyphTables(qttf_font_tables &tables, const QV
Q_ASSERT(hmtx.data.size() == hs.offset());
QVector<QTtfTable> list;
list.reserve(3);
list.append(glyf);
list.append(loca);
list.append(hmtx);