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#include <QmlEngine>
#include <QmlComponent>
#include <QDebug>
#include <QApplication>
#include <QTime>
#include <QmlContext>
#include <QGraphicsScene>
#include <QGraphicsRectItem>
class Timer : public QObject
{
Q_OBJECT
Q_PROPERTY(QmlComponent *component READ component WRITE setComponent);
public:
Timer();
QmlComponent *component() const;
void setComponent(QmlComponent *);
static Timer *timerInstance();
void run(uint);
bool willParent() const;
void setWillParent(bool p);
private:
void runTest(QmlContext *, uint);
QmlComponent *m_component;
static Timer *m_timer;
bool m_willparent;
QGraphicsScene m_scene;
QGraphicsRectItem m_item;
};
QML_DECLARE_TYPE(Timer);
QML_DEFINE_TYPE(QmlTime, 1, 0, Timer, Timer);
Timer *Timer::m_timer = 0;
Timer::Timer()
: m_component(0), m_willparent(false)
{
if (m_timer)
qWarning("Timer: Timer already registered");
m_timer = this;
m_scene.setItemIndexMethod(QGraphicsScene::NoIndex);
m_scene.addItem(&m_item);
}
QmlComponent *Timer::component() const
{
return m_component;
}
void Timer::setComponent(QmlComponent *c)
{
m_component = c;
}
Timer *Timer::timerInstance()
{
return m_timer;
}
void Timer::run(uint iterations)
{
QmlContext context(qmlContext(this));
QObject *o = m_component->create(&context);
QGraphicsObject *go = qobject_cast<QGraphicsObject *>(o);
if (m_willparent && go)
go->setParentItem(&m_item);
delete o;
runTest(&context, iterations);
}
bool Timer::willParent() const
{
return m_willparent;
}
void Timer::setWillParent(bool p)
{
m_willparent = p;
}
void Timer::runTest(QmlContext *context, uint iterations)
{
QTime t;
t.start();
for (uint ii = 0; ii < iterations; ++ii) {
QObject *o = m_component->create(context);
QGraphicsObject *go = qobject_cast<QGraphicsObject *>(o);
if (m_willparent && go)
go->setParentItem(&m_item);
delete o;
}
int e = t.elapsed();
qWarning() << "Total:" << e << "ms, Per iteration:" << qreal(e) / qreal(iterations) << "ms";
}
void usage(const char *name)
{
qWarning("Usage: %s [-iterations <count>] [-parent] <qml file>", name);
exit(-1);
}
int main(int argc, char ** argv)
{
QApplication app(argc, argv);
uint iterations = 1024;
QString filename;
bool willParent = false;
for (int ii = 1; ii < argc; ++ii) {
QByteArray arg(argv[ii]);
if (arg == "-iterations") {
if (ii + 1 < argc) {
++ii;
QByteArray its(argv[ii]);
bool ok = false;
iterations = its.toUInt(&ok);
if (!ok)
usage(argv[0]);
} else {
usage(argv[0]);
}
} else if (arg == "-parent") {
willParent = true;
} else {
filename = QLatin1String(argv[ii]);
}
}
if (filename.isEmpty())
usage(argv[0]);
QmlEngine engine;
QmlComponent component(&engine, filename);
if (component.isError()) {
qWarning() << component.errors();
return -1;
}
QObject *obj = component.create();
if (!obj) {
qWarning() << component.errors();
return -1;
}
Timer *timer = Timer::timerInstance();
if (!timer) {
qWarning() << "A Tester.Timer instance is required.";
return -1;
}
timer->setWillParent(willParent);
if (!timer->component()) {
qWarning() << "The timer has no component";
return -1;
}
timer->run(iterations);
return 0;
}
#include "qmltime.moc"
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