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#include "panningbenchmark.h"
#include "timedemo.h"
#include <MApplicationPage>
#include <MPannableViewport>
#include <MPhysics2DPanning>
#include <QTimer>
#include <qdebug.h>
namespace {
const int updateInterval = 20; // ms
const qreal ySpeed = .5; // pixel/ms
}
PanningBenchmark::PanningBenchmark(MApplicationPage *applicationPage, Timedemo *timedemo)
: TimedemoBenchmark(applicationPage, timedemo)
, timingStarted(false)
{
pannableViewport = 0;
QList<QGraphicsItem *> childItems = applicationPage->childItems();
foreach(QGraphicsItem * childItem, childItems) {
if (MPannableViewport * viewport = dynamic_cast<MPannableViewport*>(childItem)) {
pannableViewport = viewport;
break;
}
}
if (!pannableViewport) {
qFatal("Did not find matching viewport of MApplicationWindow");
}
}
QString PanningBenchmark::name() {
return "PanningBenchmark";
}
void PanningBenchmark::start()
{
if (!applicationPage->isActiveWindow()) {
connect(applicationPage, SIGNAL(appeared()), this, SLOT(waitBeforePanning()));
applicationPage->appear();
} else {
QTimer::singleShot(0, this, SLOT(panDown()));
}
}
//HACK! if we do not wait pannableViewport->physics()->range() is (0, 0, 0, 0) because
// the widgets are not completely set up yet
void PanningBenchmark::waitBeforePanning()
{
QTimer::singleShot(500, this, SLOT(panDown()));
}
void PanningBenchmark::panDown()
{
if (!timingStarted) {
timedemo->startTiming();
timingStarted = true;
formerPosition = pannableViewport->physics()->position();
timer.start();
}
QPointF currentPosition = pannableViewport->physics()->position();
QRectF range = pannableViewport->physics()->range();
if (currentPosition.y() < range.height()) {
pannableViewport->physics()->setPosition(currentPosition + QPointF(0., ySpeed * timer.elapsed()));
timer.start();
QTimer::singleShot(updateInterval, this, SLOT(panDown()));
} else {
terminateBenchmark();
}
}
void PanningBenchmark::terminateBenchmark()
{
timedemo->stopTiming();
pannableViewport->physics()->setPosition(formerPosition);
qDebug() << "end" << pannableViewport->widget()->pos() << pannableViewport->physics()->range();
emit finished();
}
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