void tst_QGraphicsEffect::boundingRect()
{
// No source; empty bounding rect.
CustomEffect *effect = new CustomEffect;
QCOMPARE(effect->boundingRect(), QRectF());
// Install effect on QGraphicsItem.
QRectF itemRect(0, 0, 100, 100);
QGraphicsRectItem *item = new QGraphicsRectItem;
item->setRect(itemRect);
item->setGraphicsEffect(effect);
int margin = effect->margin();
QCOMPARE(effect->boundingRect(), itemRect.adjusted(-margin, -margin, margin, margin));
QCOMPARE(effect->boundingRect(), effect->boundingRectFor(itemRect));
// Make sure disabling/enabling the effect doesn't change the bounding rect.
effect->setEnabled(false);
QCOMPARE(effect->boundingRect(), itemRect.adjusted(-margin, -margin, margin, margin));
QCOMPARE(effect->boundingRect(), effect->boundingRectFor(itemRect));
effect->setEnabled(true);
QCOMPARE(effect->boundingRect(), itemRect.adjusted(-margin, -margin, margin, margin));
QCOMPARE(effect->boundingRect(), effect->boundingRectFor(itemRect));
// Change effect margins.
effect->setMargin(margin = 20);
QCOMPARE(effect->boundingRect(), itemRect.adjusted(-margin, -margin, margin, margin));
QCOMPARE(effect->boundingRect(), effect->boundingRectFor(itemRect));
// Uninstall effect on QGraphicsItem.
QPointer<CustomEffect> ptr = effect;
item->setGraphicsEffect(0);
QVERIFY(!ptr);
delete item;
}
void tst_QGraphicsEffect::boundingRectFor()
{
CustomEffect effect;
int margin = effect.margin();
const QRectF source(0, 0, 100, 100);
QCOMPARE(effect.boundingRectFor(source), source.adjusted(-margin, -margin, margin, margin));
effect.setMargin(margin = 20);
QCOMPARE(effect.boundingRectFor(source), source.adjusted(-margin, -margin, margin, margin));
}
