diff options
| author | Anton Kudryavtsev <a.kudryavtsev@netris.ru> | 2016-08-18 11:57:26 +0300 |
|---|---|---|
| committer | Anton Kudryavtsev <a.kudryavtsev@netris.ru> | 2016-09-15 15:55:57 +0000 |
| commit | 6aa935cd92deb035739e8fea329ca2c4a435de54 (patch) | |
| tree | a9a3ea43af619a7a89ce39f15ea603747767a9f2 /src/widgets | |
| parent | 251d6094abf423f96aa0f10921defb4c6a805d14 (diff) | |
Use QString::fromLatin1() less to avoid string allocations
QString::fromLatin1 always allocates memory, but there are
cases where we can avoid/reduce allocations or/and reduce
text size, e.g.:
QStringBuilder expressions
Fix: replace QString::fromLatin1 with QL1S
QString::fromLatin1().arg(String) pattern
Fix: replace with QStringBuilder
Overloaded functions with QL1S arg
Fix: replace QString::fromLatin1 with QL1S
In rare cases if there is no overloaded function
with QL1S and we have deal with string literal,
replace QString::fromLatin1 with QStringLiteral.
Change-Id: Iabe1a3cc0830f40ef78a0548afa4368583c31def
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Diffstat (limited to 'src/widgets')
| -rw-r--r-- | src/widgets/accessible/qaccessiblewidgets.cpp | 2 | ||||
| -rw-r--r-- | src/widgets/kernel/qaction.cpp | 2 | ||||
| -rw-r--r-- | src/widgets/widgets/qlcdnumber.cpp | 4 | ||||
| -rw-r--r-- | src/widgets/widgets/qpushbutton.cpp | 2 |
4 files changed, 5 insertions, 5 deletions
diff --git a/src/widgets/accessible/qaccessiblewidgets.cpp b/src/widgets/accessible/qaccessiblewidgets.cpp index 95888924fb..b814762168 100644 --- a/src/widgets/accessible/qaccessiblewidgets.cpp +++ b/src/widgets/accessible/qaccessiblewidgets.cpp @@ -830,7 +830,7 @@ QString QAccessibleTextWidget::attributes(int offset, int *startOffset, int *end family = family.replace('=', QLatin1String("\\=")); family = family.replace(';', QLatin1String("\\;")); family = family.replace('\"', QLatin1String("\\\"")); - attrs["font-family"] = QString::fromLatin1("\"%1\"").arg(family); + attrs["font-family"] = QLatin1Char('"') + family + QLatin1Char('"'); } int fontSize = int(charFormatFont.pointSize()); diff --git a/src/widgets/kernel/qaction.cpp b/src/widgets/kernel/qaction.cpp index 72aae647e0..e0700d877e 100644 --- a/src/widgets/kernel/qaction.cpp +++ b/src/widgets/kernel/qaction.cpp @@ -63,7 +63,7 @@ QT_BEGIN_NAMESPACE */ static QString qt_strippedText(QString s) { - s.remove( QString::fromLatin1("...") ); + s.remove(QStringLiteral("...")); for (int i = 0; i < s.size(); ++i) { if (s.at(i) == QLatin1Char('&')) s.remove(i, 1); diff --git a/src/widgets/widgets/qlcdnumber.cpp b/src/widgets/widgets/qlcdnumber.cpp index 2703e5d8a3..aa052ef5cb 100644 --- a/src/widgets/widgets/qlcdnumber.cpp +++ b/src/widgets/widgets/qlcdnumber.cpp @@ -188,8 +188,8 @@ static QString int2string(int num, int base, int ndigits, bool *oflow) } while (n != 0); len = ndigits - len; if (len > 0) - s.fill(QLatin1Char(' '), len); - s += QString::fromLatin1(p); + s += QString(len, QLatin1Char(' ')); + s += QLatin1String(p); } break; } diff --git a/src/widgets/widgets/qpushbutton.cpp b/src/widgets/widgets/qpushbutton.cpp index 5608a4aff9..bf10b9fb75 100644 --- a/src/widgets/widgets/qpushbutton.cpp +++ b/src/widgets/widgets/qpushbutton.cpp @@ -415,7 +415,7 @@ QSize QPushButton::sizeHint() const QString s(text()); bool empty = s.isEmpty(); if (empty) - s = QString::fromLatin1("XXXX"); + s = QStringLiteral("XXXX"); QFontMetrics fm = fontMetrics(); QSize sz = fm.size(Qt::TextShowMnemonic, s); if(!empty || !w) |