void tst_QGraphicsEffect::itemHasNoContents()
{
QGraphicsRectItem *parent = new QGraphicsRectItem;
parent->setFlag(QGraphicsItem::ItemHasNoContents);
MyGraphicsItem *child = new MyGraphicsItem;
child->setParentItem(parent);
child->resize(200, 200);
QGraphicsScene scene;
scene.addItem(parent);
QGraphicsView view(&scene);
view.show();
QTest::qWaitForWindowShown(&view);
#ifdef Q_OS_MAC
if (QSysInfo::MacintoshVersion == QSysInfo::MV_LION) {
QEXPECT_FAIL("", "QTBUG-26858", Abort);
}
#endif
QTRY_COMPARE(child->nbPaint, 1);
CustomEffect *effect = new CustomEffect;
parent->setGraphicsEffect(effect);
QTRY_COMPARE(effect->numRepaints, 1);
for (int i = 0; i < 3; ++i) {
effect->reset();
effect->update();
QTRY_COMPARE(effect->numRepaints, 1);
}
}
void tst_QGraphicsEffect::itemHasNoContents()
{
QGraphicsRectItem *parent = new QGraphicsRectItem;
parent->setFlag(QGraphicsItem::ItemHasNoContents);
MyGraphicsItem *child = new MyGraphicsItem;
child->setParentItem(parent);
child->resize(200, 200);
QGraphicsScene scene;
scene.addItem(parent);
QGraphicsView view(&scene);
view.show();
QTest::qWaitForWindowShown(&view);
QTRY_COMPARE(child->nbPaint, 1);
CustomEffect *effect = new CustomEffect;
parent->setGraphicsEffect(effect);
QTRY_COMPARE(effect->numRepaints, 1);
for (int i = 0; i < 3; ++i) {
effect->reset();
effect->update();
QTRY_COMPARE(effect->numRepaints, 1);
}
}
void DivePictureItem::setPixmap(const QPixmap &pix)
{
DivePixmapItem::setPixmap(pix);
QRectF r = boundingRect();
QGraphicsRectItem *rect = new QGraphicsRectItem(0 - 10, 0 -10, r.width() + 20, r.height() + 20, this);
rect->setPen(Qt::NoPen);
rect->setBrush(QColor(Qt::white));
rect->setFlag(ItemStacksBehindParent);
rect->setZValue(-1);
QGraphicsRectItem *shadow = new QGraphicsRectItem(rect->boundingRect(), this);
shadow->setPos(5,5);
shadow->setPen(Qt::NoPen);
shadow->setBrush(QColor(Qt::lightGray));
shadow->setFlag(ItemStacksBehindParent);
shadow->setZValue(-2);
}
void Scene::drawItem(QPointF const &destination)
{
if (itemType == "QGraphicsRectItem")
{
QGraphicsRectItem* rect = addRect(QRectF(destination.x(), destination.y(), 100, 70)
, pen, brush);
rect->setFlag(QGraphicsItem::ItemIsMovable, true);
rect->setFlag(QGraphicsItem::ItemIsSelectable, true);
}
else if (itemType == "QGraphicsEllipseItem")
{
QGraphicsEllipseItem* ellipse = addEllipse(QRectF(destination.x(), destination.y(), 100, 70)
, pen, brush);
ellipse->setFlag(QGraphicsItem::ItemIsMovable, true);
ellipse->setFlag(QGraphicsItem::ItemIsSelectable, true);
}
}
void CadControlPointsGroup::setPoints(QPolygonF *newPoints)
{
points = newPoints;
QGraphicsRectItem * rectItem;
for(int i = 0; i<points->size();i++)
{
QPointF p = points->value(i);
QPointF p1 = p - QPointF(3,3);
QPointF p2 = p + QPointF(3,3);
QRectF r = QRectF(p1,p2);
rectItem = new QGraphicsRectItem(r,this);
rectItem->setFlag(QGraphicsItem::ItemIsMovable, true);
rectItem->setFlag(QGraphicsItem::ItemIsSelectable, true);
addToGroup(rectItem);
}
}
void MainWindow::slotAddRectItem() //在场景中加入一个长方形图元
{
QGraphicsRectItem *item = new QGraphicsRectItem(QRectF(0,0,60,60));
QPen pen;
pen.setWidth(3);
pen.setColor(QColor(qrand()%256,qrand()%256,qrand()%256));
item->setPen(pen);
item->setBrush(QColor(qrand()%256,qrand()%256,qrand()%256));
item->setFlag(QGraphicsItem::ItemIsMovable);
scene->addItem(item);
item->setPos((qrand()%int(scene->sceneRect().width()))-200,(qrand()%int(scene->sceneRect().height()))-200);
}
int main(int argc, char **argv)
{
QApplication app(argc, argv);
QGraphicsScene scene;
QGraphicsRectItem *rect = scene.addRect(QRectF(0, 0, 100, 100));
rect->setFlag(QGraphicsItem::ItemIsMovable);
QGraphicsView view(&scene);
view.show();
return app.exec();
}
void tst_QGraphicsEffect::boundingRect2()
{
CustomEffect *effect = new CustomEffect;
QGraphicsRectItem *root = new QGraphicsRectItem;
root->setGraphicsEffect(effect);
QGraphicsRectItem *child = new QGraphicsRectItem;
QRectF childRect(0, 0, 100, 100);
child->setFlag(QGraphicsItem::ItemClipsChildrenToShape);
child->setRect(childRect);
child->setParentItem(root);
QGraphicsRectItem *grandChild = new QGraphicsRectItem;
QRectF grandChildRect(0, 0, 200, 200);
grandChild->setRect(grandChildRect);
grandChild->setParentItem(child);
// Make sure the effect's bounding rect is clipped to the child's bounding rect.
QCOMPARE(effect->boundingRect(), effect->boundingRectFor(childRect));
// Disable ItemClipsChildrenToShape; effect's bounding rect is no longer clipped.
child->setFlag(QGraphicsItem::ItemClipsChildrenToShape, false);
QCOMPARE(effect->boundingRect(), effect->boundingRectFor(childRect | grandChildRect));
// Add root item to a scene, do the same tests as above. Results should be the same.
QGraphicsScene scene;
scene.addItem(root);
child->setFlag(QGraphicsItem::ItemClipsChildrenToShape);
QCOMPARE(effect->boundingRect(), effect->boundingRectFor(childRect));
child->setFlag(QGraphicsItem::ItemClipsChildrenToShape, false);
QCOMPARE(effect->boundingRect(), effect->boundingRectFor(childRect | grandChildRect));
// Now add the scene to a view, results should be the same.
QGraphicsView view(&scene);
child->setFlag(QGraphicsItem::ItemClipsChildrenToShape);
QCOMPARE(effect->boundingRect(), effect->boundingRectFor(childRect));
child->setFlag(QGraphicsItem::ItemClipsChildrenToShape, false);
QCOMPARE(effect->boundingRect(), effect->boundingRectFor(childRect | grandChildRect));
CustomEffect *childEffect = new CustomEffect;
child->setGraphicsEffect(childEffect);
QCOMPARE(effect->boundingRect(), effect->boundingRectFor(childEffect->boundingRectFor(childRect | grandChildRect)));
child->setGraphicsEffect(0);
QCOMPARE(effect->boundingRect(), effect->boundingRectFor(childRect | grandChildRect));
}
