本文整理汇总了C++中QCache::setMaxCost方法的典型用法代码示例。如果您正苦于以下问题：C++ QCache::setMaxCost方法的具体用法？C++ QCache::setMaxCost怎么用？C++ QCache::setMaxCost使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类QCache的用法示例。
在下文中一共展示了QCache::setMaxCost方法的5个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: take
void tst_QCache::take()
{
QCache<QString, Foo> cache;
QCOMPARE(cache.take(QString()), (Foo*)0);
QCOMPARE(cache.take("alpha"), (Foo*)0);
QVERIFY(cache.isEmpty());
Foo *f1 = new Foo;
cache.insert("alpha", f1, 10);
QCOMPARE(cache.size(), 1);
QVERIFY(cache["alpha"] == f1);
cache.insert("beta", new Foo, 20);
QCOMPARE(cache.size(), 2);
QCOMPARE(cache.take("alpha"), f1);
QCOMPARE(cache.size(), 1);
QCOMPARE(cache.totalCost(), 20);
QCOMPARE(Foo::count, 2);
delete f1;
QCOMPARE(Foo::count, 1);
QCOMPARE(cache.take("alpha"), (Foo*)0);
QCOMPARE(Foo::count, 1);
QCOMPARE(cache.size(), 1);
QCOMPARE(cache.totalCost(), 20);
cache.setMaxCost(1);
QCOMPARE(cache.size(), 0);
QCOMPARE(cache.take("beta"), (Foo*)0);
QCOMPARE(cache.size(), 0);
}示例2: get_file_icon
QIcon get_file_icon(const QString& content_type) {
static QCache<QString, QIcon> cache;
cache.setMaxCost(100);
if (cache.contains(content_type)) return QIcon(*(cache.object(content_type)));
QByteArray ba = content_type.toLocal8Bit();
GIcon* gicon = g_content_type_get_icon(ba.constData());
QStringList tried_names;
if (G_IS_THEMED_ICON(gicon)) {
const gchar * const * names = g_themed_icon_get_names(reinterpret_cast<GThemedIcon*>(gicon));
if (names != 0) {
int i = 0;
while(names[i] != 0) {
QString name = QString::fromLocal8Bit(names[i]);
QIcon r = QIcon::fromTheme(name);
if (r.isNull()) {
tried_names << name;
} else {
cache.insert(content_type, new QIcon(r));
g_object_unref(gicon);
return r;
}
i++;
}
} else {
qDebug() << "get_file_icon: empty or invalid result of g_themed_icon_get_names";
}
} else {
qDebug() << "get_file_icon: gicon is not themed icon";
}
qDebug() << "get_file_icon(" << content_type << "): no valid names" << tried_names << "; returning null icon";
cache.insert(content_type, new QIcon());
g_object_unref(gicon);
return QIcon();
}示例3: setMaxCost
void tst_QCache::setMaxCost()
{
QCache<int, Foo> cache;
cache.setMaxCost(2);
cache.insert(1, new Foo);
cache.insert(2, new Foo);
QCOMPARE(cache.totalCost(), 2);
QCOMPARE(Foo::count, 2);
cache.insert(3, new Foo);
QCOMPARE(cache.totalCost(), 2);
QCOMPARE(Foo::count, 2);
cache.setMaxCost(3);
QCOMPARE(cache.totalCost(), 2);
QCOMPARE(Foo::count, 2);
cache.setMaxCost(2);
QCOMPARE(cache.totalCost(), 2);
QCOMPARE(Foo::count, 2);
cache.setMaxCost(1);
QCOMPARE(cache.totalCost(), 1);
QCOMPARE(Foo::count, 1);
cache.setMaxCost(0);
QCOMPARE(cache.totalCost(), 0);
QCOMPARE(Foo::count, 0);
cache.setMaxCost(-1);
QCOMPARE(cache.totalCost(), 0);
QCOMPARE(Foo::count, 0);
}示例4: axioms_on_key_type
void tst_QCache::axioms_on_key_type()
{
QCache<KeyType, ValueType> foo;
foo.setMaxCost(1);
foo.clear();
foo.insert(KeyType(123), new ValueType(123));
foo.object(KeyType(123));
foo.contains(KeyType(456));
foo[KeyType(456)];
foo.remove(KeyType(456));
foo.remove(KeyType(123));
foo.take(KeyType(789));
// If this fails, contact the maintaner
QVERIFY(sizeof(QHash<int, int>) == sizeof(void *));
}示例5: remove
void tst_QCache::remove()
{
QCache<QString, Foo> cache;
cache.remove(QString());
cache.remove("alpha");
QVERIFY(cache.isEmpty());
cache.insert("alpha", new Foo, 10);
QCOMPARE(cache.size(), 1);
cache.insert("beta", new Foo, 20);
QCOMPARE(cache.size(), 2);
for (int i = 0; i < 10; ++i) {
cache.remove("alpha");
QCOMPARE(cache.size(), 1);
QCOMPARE(cache.totalCost(), 20);
}
cache.setMaxCost(1);
QCOMPARE(cache.size(), 0);
cache.remove("beta");
QCOMPARE(cache.size(), 0);
}