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qt5base-lts/tests/auto/widgets/graphicsview/qgraphicslayout/tst_qgraphicslayout.cpp
Jason McDonald 5635823e17 Remove "All rights reserved" line from license headers. 
As in the past, to avoid rewriting various autotests that contain
line-number information, an extra blank line has been inserted at the
end of the license text to ensure that this commit does not change the
total number of lines in the license header.

Change-Id: I311e001373776812699d6efc045b5f742890c689
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
2012-01-30 03:54:59 +01:00

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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtTest/QtTest>
#include <QtGui>
#include <QtWidgets>
#include <math.h>
class tst_QGraphicsLayout : public QObject
{
Q_OBJECT
public:
tst_QGraphicsLayout();
virtual ~tst_QGraphicsLayout();
private slots:
void sizeHints();
void compressLayoutRequest();
void automaticReparenting();
void verifyActivate();
void invalidate();
void constructors();
void alternativeLayoutItems();
void ownership();
};
tst_QGraphicsLayout::tst_QGraphicsLayout()
{
}
tst_QGraphicsLayout::~tst_QGraphicsLayout()
{
}
void tst_QGraphicsLayout::sizeHints()
{
QGraphicsView view;
QGraphicsScene scene;
QGraphicsWidget *window = new QGraphicsWidget();
scene.addItem(window);
QGraphicsLinearLayout *lout = new QGraphicsLinearLayout(window);
lout->setContentsMargins(0,0,0,0);
QGraphicsWidget *gw = new QGraphicsWidget(window);
gw->setMinimumSize(QSizeF(10,10));
gw->setPreferredSize(QSizeF(100,100));
gw->setMaximumSize(QSizeF(500,500));
lout->addItem(gw);
QCOMPARE(lout->effectiveSizeHint(Qt::MinimumSize), gw->effectiveSizeHint(Qt::MinimumSize));
QCOMPARE(lout->effectiveSizeHint(Qt::PreferredSize), gw->effectiveSizeHint(Qt::PreferredSize));
QCOMPARE(lout->effectiveSizeHint(Qt::MaximumSize), gw->effectiveSizeHint(Qt::MaximumSize));
}
enum FunctionType {
SetGeometry = 0,
Invalidate,
NumFunctionTypes
};
class TestGraphicsWidget : public QGraphicsWidget {
public:
TestGraphicsWidget(QGraphicsWidget *parent = 0) : QGraphicsWidget(parent)
{ }
bool event(QEvent *e) {
++(m_eventCount[int(e->type())]);
return QGraphicsWidget::event(e);
}
int eventCount(QEvent::Type type) {
return m_eventCount.value(int(type));
}
void clearEventCount() {
m_eventCount.clear();
}
void clearCounters() {
m_eventCount.clear();
functionCount.clear();
}
void setGeometry(const QRectF &rect)
{
QGraphicsWidget::setGeometry(rect);
++(functionCount[SetGeometry]);
}
void callUpdateGeometry()
{
// updateGeometry() is protected
QGraphicsWidget::updateGeometry();
}
QMap<FunctionType, int> functionCount;
private:
QMap<int, int> m_eventCount;
};
void tst_QGraphicsLayout::compressLayoutRequest()
{
QGraphicsView view;
QGraphicsScene scene;
TestGraphicsWidget *tw = new TestGraphicsWidget();
scene.addItem(tw);
view.show();
QTest::qWaitForWindowShown(&view);
QGraphicsLinearLayout *lout = new QGraphicsLinearLayout(tw);
for (int i = 0; i < 4; ++i) {
QGraphicsWidget *gw = new QGraphicsWidget(tw);
gw->setPreferredSize(QSizeF(50, 50));
lout->addItem(gw);
}
QApplication::processEvents();
QCOMPARE(tw->eventCount(QEvent::LayoutRequest), 1);
}
void tst_QGraphicsLayout::automaticReparenting()
{
QGraphicsView view;
QGraphicsScene scene;
{
QGraphicsWidget *w = new QGraphicsWidget();
QGraphicsLinearLayout *l = new QGraphicsLinearLayout(w);
QGraphicsWidget *w1 = new QGraphicsWidget;
l->addItem(w1);
scene.addItem(w);
QCOMPARE(w1->parentWidget(), w);
delete w;
}
{
QGraphicsWidget *w = new QGraphicsWidget();
QGraphicsLinearLayout *l = new QGraphicsLinearLayout(w);
QGraphicsWidget *w1 = new QGraphicsWidget;
l->addItem(w1);
scene.addItem(w);
QCOMPARE(w1->parentWidget(), w);
QGraphicsWidget *ww = new QGraphicsWidget();
QGraphicsLinearLayout *l1 = new QGraphicsLinearLayout(ww);
#if !defined(Q_OS_MAC) && defined(QT_DEBUG)
QTest::ignoreMessage(QtWarningMsg, "QGraphicsLayout::addChildLayoutItem: QGraphicsWidget \"\""
" in wrong parent; moved to correct parent");
#endif
l1->addItem(w1);
QCOMPARE(w1->parentWidget(), ww);
delete w;
}
QGraphicsWidget *window = new QGraphicsWidget();
scene.addItem(window);
view.show();
QGraphicsLinearLayout *l1 = new QGraphicsLinearLayout();
QGraphicsWidget *w1 = new QGraphicsWidget();
l1->addItem(w1);
QGraphicsWidget *w2 = new QGraphicsWidget();
l1->addItem(w2);
QCOMPARE(w1->parentItem(), static_cast<QGraphicsItem*>(0));
QCOMPARE(w2->parentItem(), static_cast<QGraphicsItem*>(0));
scene.addItem(w1);
QCOMPARE(w1->parentItem(), static_cast<QGraphicsItem*>(0));
window->setLayout(l1);
QCOMPARE(w1->parentItem(), static_cast<QGraphicsItem*>(window));
QCOMPARE(w2->parentItem(), static_cast<QGraphicsItem*>(window));
// Sublayouts
QGraphicsLinearLayout *l2 = new QGraphicsLinearLayout();
QGraphicsWidget *w3 = new QGraphicsWidget();
l2->addItem(w3);
QGraphicsWidget *w4 = new QGraphicsWidget();
l2->addItem(w4);
QGraphicsLinearLayout *l3 = new QGraphicsLinearLayout();
l2->addItem(l3);
QGraphicsWidget *window2 = new QGraphicsWidget();
scene.addItem(window2);
window2->setLayout(l2);
QCOMPARE(w3->parentItem(), static_cast<QGraphicsItem*>(window2));
QCOMPARE(w4->parentItem(), static_cast<QGraphicsItem*>(window2));
// graphics item with another parent
QGraphicsLinearLayout *l5 = new QGraphicsLinearLayout();
l5->addItem(w1);
l5->addItem(w2);
QCOMPARE(w1->parentItem(), static_cast<QGraphicsItem*>(window));
QCOMPARE(w2->parentItem(), static_cast<QGraphicsItem*>(window));
QGraphicsLinearLayout *l4 = new QGraphicsLinearLayout();
l4->addItem(l5);
QGraphicsWidget *window3 = new QGraphicsWidget();
scene.addItem(window3);
window3->setLayout(l4);
QCOMPARE(w1->parentItem(), static_cast<QGraphicsItem*>(window3));
QCOMPARE(w2->parentItem(), static_cast<QGraphicsItem*>(window3));
}
class TestLayout : public QGraphicsLinearLayout
{
public:
TestLayout(QGraphicsLayoutItem *parent = 0)
: QGraphicsLinearLayout(parent)
{
setContentsMargins(0,0,0,0);
setSpacing(0);
}
void setGeometry(const QRectF &rect)
{
++(functionCount[SetGeometry]);
QGraphicsLinearLayout::setGeometry(rect);
}
void invalidate()
{
++(functionCount[Invalidate]);
QGraphicsLinearLayout::invalidate();
}
void clearCounters() {
functionCount.clear();
}
QMap<FunctionType, int> functionCount;
};
void tst_QGraphicsLayout::verifyActivate()
{
QGraphicsScene scene;
QGraphicsView view(&scene);
QGraphicsWidget *window = new QGraphicsWidget();
scene.addItem(window);
TestLayout *lout = new TestLayout(window);
QGraphicsWidget *w = new QGraphicsWidget();
lout->addItem(w);
window->setLayout(lout);
QCOMPARE(lout->functionCount[SetGeometry], 0);
window->setVisible(false);
QCOMPARE(lout->functionCount[SetGeometry], 0);
window->setVisible(true);
// on polish or the first time a widget is shown, the widget is resized.
QCOMPARE(lout->functionCount[SetGeometry], 1);
}
static void clearAllCounters(TestGraphicsWidget *widget)
{
if (!widget)
return;
widget->clearCounters();
TestLayout *layout = static_cast<TestLayout *>(widget->layout());
if (layout) {
layout->clearCounters();
for (int i = layout->count() - 1; i >=0; --i) {
QGraphicsLayoutItem *item = layout->itemAt(i);
if (item->isLayout()) {
// ### Not used ATM
//TestLayout *lay = static_cast<TestLayout*>(static_cast<QGraphicsLayout*>(item));
//clearAllCounters(lay);
} else {
TestGraphicsWidget *wid = static_cast<TestGraphicsWidget *>(item);
clearAllCounters(wid);
}
}
}
}
static void activateAndReset(TestGraphicsWidget *widget)
{
QApplication::sendPostedEvents();
QApplication::processEvents();
if (widget->layout())
widget->layout()->activate();
clearAllCounters(widget);
}
void tst_QGraphicsLayout::invalidate()
{
QGraphicsLayout::setInstantInvalidatePropagation(true);
QGraphicsScene scene;
QGraphicsView view(&scene);
TestGraphicsWidget *a = new TestGraphicsWidget;
a->setData(0, QString("a"));
scene.addItem(a);
TestLayout *alay = new TestLayout(a);
TestGraphicsWidget *b = new TestGraphicsWidget;
b->setData(0, QString("b"));
alay->addItem(b);
TestLayout *blay = new TestLayout(b);
TestGraphicsWidget *e = new TestGraphicsWidget;
e->setData(0, QString("e"));
blay->addItem(e);
TestGraphicsWidget *c = new TestGraphicsWidget;
c->setData(0, QString("c"));
alay->addItem(c);
TestLayout *clay = new TestLayout(c);
TestGraphicsWidget *f = new TestGraphicsWidget;
f->setData(0, QString("f"));
clay->addItem(f);
TestGraphicsWidget *d = new TestGraphicsWidget;
d->setData(0, QString("d"));
alay->addItem(d);
TestLayout *dlay = new TestLayout(d);
TestGraphicsWidget *g = new TestGraphicsWidget;
g->setData(0, QString("g"));
dlay->addItem(g);
view.show();
{
clearAllCounters(a);
QCoreApplication::sendPostedEvents();
QCoreApplication::processEvents();
alay->activate();
QCOMPARE(alay->isActivated(), true);
QCOMPARE(blay->isActivated(), true);
QCOMPARE(clay->isActivated(), true);
QCOMPARE(dlay->isActivated(), true);
}
{
clearAllCounters(a);
e->callUpdateGeometry();
QCOMPARE(alay->isActivated(), false);
QCOMPARE(blay->isActivated(), false);
QCOMPARE(clay->isActivated(), true);
QCOMPARE(dlay->isActivated(), true);
QCOMPARE(a->eventCount(QEvent::LayoutRequest), 0);
QCOMPARE(b->eventCount(QEvent::LayoutRequest), 0);
QCOMPARE(c->eventCount(QEvent::LayoutRequest), 0);
QCOMPARE(d->eventCount(QEvent::LayoutRequest), 0);
// should only invalidate ascendants of e
QCOMPARE(blay->functionCount[Invalidate], 1);
QCOMPARE(alay->functionCount[Invalidate], 1);
// not siblings
QCOMPARE(clay->functionCount[Invalidate], 0);
QCOMPARE(dlay->functionCount[Invalidate], 0);
QApplication::sendPostedEvents();
QCOMPARE(a->eventCount(QEvent::LayoutRequest), 1);
QCOMPARE(b->eventCount(QEvent::LayoutRequest), 1);
QCOMPARE(c->eventCount(QEvent::LayoutRequest), 0);
QCOMPARE(d->eventCount(QEvent::LayoutRequest), 0);
}
{
activateAndReset(a);
f->callUpdateGeometry();
QCOMPARE(alay->isActivated(), false);
QCOMPARE(blay->isActivated(), true);
QCOMPARE(clay->isActivated(), false);
QCOMPARE(dlay->isActivated(), true);
QCoreApplication::sendPostedEvents();
QCOMPARE(a->eventCount(QEvent::LayoutRequest), 1);
QCOMPARE(b->eventCount(QEvent::LayoutRequest), 0);
QCOMPARE(c->eventCount(QEvent::LayoutRequest), 1);
QCOMPARE(d->eventCount(QEvent::LayoutRequest), 0);
QCOMPARE(a->functionCount[SetGeometry], 1);
QCOMPARE(alay->functionCount[SetGeometry], 1);
QCOMPARE(b->functionCount[SetGeometry], 1);
QCOMPARE(c->functionCount[SetGeometry], 1);
QCOMPARE(d->functionCount[SetGeometry], 1);
// Since nothing really changed, blay and dlay don't need
// to be resized.
QCOMPARE(blay->functionCount[SetGeometry], 0);
QCOMPARE(clay->functionCount[SetGeometry], 1);
QCOMPARE(dlay->functionCount[SetGeometry], 0);
QCOMPARE(f->functionCount[SetGeometry], 1);
QCOMPARE(a->size(), QSizeF(150, 50));
}
{
activateAndReset(a);
f->setPreferredSize(QSizeF(60,50));
QCOMPARE(alay->isActivated(), false);
QCOMPARE(blay->isActivated(), true);
QCOMPARE(clay->isActivated(), false);
QCOMPARE(dlay->isActivated(), true);
QCOMPARE(c->eventCount(QEvent::LayoutRequest), 0);
QCoreApplication::sendPostedEvents();
QCOMPARE(a->eventCount(QEvent::LayoutRequest), 1);
QCOMPARE(b->eventCount(QEvent::LayoutRequest), 0);
QCOMPARE(c->eventCount(QEvent::LayoutRequest), 1);
QCOMPARE(d->eventCount(QEvent::LayoutRequest), 0);
QCOMPARE(a->functionCount[SetGeometry], 1);
QCOMPARE(alay->functionCount[SetGeometry], 1);
QCOMPARE(b->functionCount[SetGeometry], 1);
QCOMPARE(c->functionCount[SetGeometry], 1);
QCOMPARE(d->functionCount[SetGeometry], 1);
// f actually got wider, need to rearrange its siblings
QCOMPARE(blay->functionCount[SetGeometry], 1);
QCOMPARE(clay->functionCount[SetGeometry], 1);
QCOMPARE(dlay->functionCount[SetGeometry], 1);
QCOMPARE(e->functionCount[SetGeometry], 1);
QCOMPARE(f->functionCount[SetGeometry], 1);
QCOMPARE(g->functionCount[SetGeometry], 1);
QVERIFY(e->size().width() < f->size().width());
QVERIFY(g->size().width() < f->size().width());
}
{
// resize f so much that it'll force a resize of the top widget
// this will currently generate two setGeometry() calls on the child layout
// of the top widget.
activateAndReset(a);
f->setPreferredSize(QSizeF());
f->setMinimumSize(QSizeF(200,50));
QCOMPARE(alay->isActivated(), false);
QCOMPARE(blay->isActivated(), true);
QCOMPARE(clay->isActivated(), false);
QCOMPARE(dlay->isActivated(), true);
QCOMPARE(c->eventCount(QEvent::LayoutRequest), 0);
QCoreApplication::sendPostedEvents();
QCOMPARE(a->eventCount(QEvent::LayoutRequest), 1);
QCOMPARE(b->eventCount(QEvent::LayoutRequest), 0);
QCOMPARE(c->eventCount(QEvent::LayoutRequest), 1);
QCOMPARE(d->eventCount(QEvent::LayoutRequest), 0);
QCOMPARE(a->functionCount[SetGeometry], 1);
/* well, ideally one call to setGeometry(), but it will currently
* get two calls to setGeometry():
* 1. The first LayoutRequest will call activate() - that will call
* setGeometry() on the layout. This geometry will be based on
* the widget geometry which is not correct at this moment.
* (it is still 150 wide)
* 2. Next, we check if the widget is top level, and then we call
* parentWidget->resize(parentWidget->size());
* This will be adjusted to be minimum 200 pixels wide.
* The new size will then be propagated down to the layout
*
*/
QCOMPARE(alay->functionCount[SetGeometry], 2);
QCOMPARE(b->functionCount[SetGeometry], 2);
QCOMPARE(c->functionCount[SetGeometry], 2);
QCOMPARE(d->functionCount[SetGeometry], 2);
// f actually got wider, need to rearrange its siblings
QCOMPARE(blay->functionCount[SetGeometry], 1);
QCOMPARE(clay->functionCount[SetGeometry], 1);
QCOMPARE(dlay->functionCount[SetGeometry], 1);
QCOMPARE(e->functionCount[SetGeometry], 1);
QCOMPARE(f->functionCount[SetGeometry], 1);
QCOMPARE(g->functionCount[SetGeometry], 1);
QVERIFY(e->size().width() < f->size().width());
QVERIFY(g->size().width() < f->size().width());
}
{
f->setPreferredSize(QSizeF());
f->setMinimumSize(QSizeF());
a->adjustSize();
activateAndReset(a);
// update two different leaf widgets,
// eventCount and functionCount should never be >= 2
e->callUpdateGeometry();
g->callUpdateGeometry();
QCOMPARE(alay->isActivated(), false);
QCOMPARE(blay->isActivated(), false);
QCOMPARE(clay->isActivated(), true);
QCOMPARE(dlay->isActivated(), false);
QCoreApplication::sendPostedEvents();
QCOMPARE(a->eventCount(QEvent::LayoutRequest), 1);
QCOMPARE(b->eventCount(QEvent::LayoutRequest), 1);
QCOMPARE(c->eventCount(QEvent::LayoutRequest), 0);
QCOMPARE(d->eventCount(QEvent::LayoutRequest), 1);
QCOMPARE(a->functionCount[SetGeometry], 1);
QCOMPARE(alay->functionCount[SetGeometry], 1);
QCOMPARE(b->functionCount[SetGeometry], 1);
QCOMPARE(c->functionCount[SetGeometry], 1);
QCOMPARE(d->functionCount[SetGeometry], 1);
// f actually got wider, need to rearrange its siblings
QCOMPARE(blay->functionCount[SetGeometry], 1);
QCOMPARE(clay->functionCount[SetGeometry], 0);
QCOMPARE(dlay->functionCount[SetGeometry], 1);
QCOMPARE(e->functionCount[SetGeometry], 1);
QCOMPARE(f->functionCount[SetGeometry], 0);
QCOMPARE(g->functionCount[SetGeometry], 1);
}
QGraphicsLayout::setInstantInvalidatePropagation(false);
}
class Layout : public QGraphicsLayout
{
public:
Layout(QGraphicsLayoutItem *parentItem = 0) : QGraphicsLayout(parentItem) {}
void setGeometry(const QRectF &rect)
{
QGraphicsLayout::setGeometry(rect);
}
int count() const {
return 0;
}
QGraphicsLayoutItem *itemAt(int index) const {
Q_UNUSED(index);
return 0;
}
void removeAt(int index)
{
Q_UNUSED(index);
}
protected:
QSizeF sizeHint(Qt::SizeHint which, const QSizeF &constraint = QSizeF()) const
{
Q_UNUSED(constraint);
Q_UNUSED(which);
return QSizeF(100,100);
}
};
void tst_QGraphicsLayout::constructors()
{
// Strange test, but see the fix that was with this submit
QVector<Layout*> layouts;
for (int pass = 0; pass < 5; ++pass) {
Layout *lay = new Layout();
layouts << lay;
qreal left, top, right, bottom;
lay->getContentsMargins(&left, &top, &right, &bottom);
// Test if the style defaults are sane (should always be ints)
double intpart;
QVERIFY(modf(left, &intpart) == 0.0);
QVERIFY(modf(top, &intpart) == 0.0);
QVERIFY(modf(right, &intpart) == 0.0);
QVERIFY(modf(bottom, &intpart) == 0.0);
lay->setContentsMargins(1, 2, 4, 8);
lay->getContentsMargins(&left, &top, &right, &bottom);
QCOMPARE(int(left), 1);
QCOMPARE(int(top), 2);
QCOMPARE(int(right), 4);
QCOMPARE(int(bottom), 8);
}
qDeleteAll(layouts);
}
class AnimatedLayoutItem : public QGraphicsLayoutItem {
public:
AnimatedLayoutItem(QGraphicsRectItem *item)
: QGraphicsLayoutItem()
{
setGraphicsItem(item);
}
void setGeometry(const QRectF &geom);
QSizeF sizeHint(Qt::SizeHint which, const QSizeF & constraint = QSizeF() ) const;
inline QGraphicsRectItem *rectItem() {
return static_cast<QGraphicsRectItem *>(graphicsItem());
}
QRectF m_geom;
private:
AnimatedLayoutItem() {}
};
void AnimatedLayoutItem::setGeometry(const QRectF &geom)
{
QGraphicsLayoutItem::setGeometry(geom);
}
QSizeF AnimatedLayoutItem::sizeHint(Qt::SizeHint which, const QSizeF & /* constraint */) const
{
switch (which) {
case Qt::MinimumSize:
return QSizeF(32,32);
case Qt::PreferredSize:
return QSizeF(160,90);
case Qt::MaximumSize:
return QSizeF(1000,1000);
default:
return QSizeF(300, 300);
}
}
class AnimatedLayout : public QObject, public QGraphicsLinearLayout {
Q_OBJECT
public:
AnimatedLayout(QGraphicsWidget *widget) : QGraphicsLinearLayout(widget), m_timeline(500, this)
{
connect(&m_timeline, SIGNAL(valueChanged(qreal)), this, SLOT(valueChanged(qreal)));
}
void setGeometry(const QRectF &geom) {
fromGeoms.clear();
toGeoms.clear();
for (int i = 0; i < count(); ++i) {
fromGeoms << itemAt(i)->geometry();
}
QGraphicsLinearLayout::setGeometry(geom);
for (int i = 0; i < count(); ++i) {
toGeoms << itemAt(i)->geometry();
}
m_timeline.start();
}
private slots:
void valueChanged(qreal value) {
for (int i = 0; i < fromGeoms.count(); ++i) {
QGraphicsLayoutItem *li = itemAt(i);
QRectF from = fromGeoms.at(i);
QRectF to = toGeoms.at(i);
QRectF geom(from.topLeft() + (to.topLeft() - from.topLeft()) * value,
from.size() + (to.size() - from.size()) * value);
static_cast<QGraphicsRectItem*>(li->graphicsItem())->setRect(geom);
}
}
private:
QTimeLine m_timeline;
QVector<QRectF> fromGeoms;
QVector<QRectF> toGeoms;
};
void tst_QGraphicsLayout::alternativeLayoutItems()
{
QGraphicsScene scene;
QGraphicsView view(&scene);
QGraphicsWidget *window = new QGraphicsWidget;
scene.addItem(window);
AnimatedLayout *lout = new AnimatedLayout(window);
lout->setContentsMargins(0, 0, 0, 0);
lout->setSpacing(0);
QGraphicsRectItem *item1 = new QGraphicsRectItem;
AnimatedLayoutItem *li1 = new AnimatedLayoutItem(item1);
lout->addItem(li1);
QGraphicsRectItem *item2 = new QGraphicsRectItem;
AnimatedLayoutItem *li2 = new AnimatedLayoutItem(item2);
lout->addItem(li2);
QGraphicsRectItem *item3 = new QGraphicsRectItem;
AnimatedLayoutItem *li3 = new AnimatedLayoutItem(item3);
lout->addItem(li3);
window->setLayout(lout);
window->setGeometry(0, 0, 99, 99);
view.setSceneRect(QRectF(-10, -10, 110, 110));
view.resize(150, 150);
view.show();
QTRY_COMPARE(static_cast<QGraphicsRectItem*>(li1->graphicsItem())->rect(), QRectF( 0, 0, 33, 99));
QTRY_COMPARE(static_cast<QGraphicsRectItem*>(li2->graphicsItem())->rect(), QRectF(33, 0, 33, 99));
QTRY_COMPARE(static_cast<QGraphicsRectItem*>(li3->graphicsItem())->rect(), QRectF(66, 0, 33, 99));
lout->setOrientation(Qt::Vertical);
QTRY_COMPARE(static_cast<QGraphicsRectItem*>(li1->graphicsItem())->rect(), QRectF(0, 0, 99, 33));
QTRY_COMPARE(static_cast<QGraphicsRectItem*>(li2->graphicsItem())->rect(), QRectF(0, 33, 99, 33));
QTRY_COMPARE(static_cast<QGraphicsRectItem*>(li3->graphicsItem())->rect(), QRectF(0, 66, 99, 33));
}
class CustomLayoutItem : public QGraphicsLayoutItem {
public:
CustomLayoutItem(QSet<QGraphicsLayoutItem*> *destructedSet)
: QGraphicsLayoutItem()
{
m_destructedSet = destructedSet;
setOwnedByLayout(true);
}
QSizeF sizeHint(Qt::SizeHint which, const QSizeF & constraint = QSizeF() ) const;
~CustomLayoutItem() {
m_destructedSet->insert(this);
}
private:
QSet<QGraphicsLayoutItem*> *m_destructedSet;
};
QSizeF CustomLayoutItem::sizeHint(Qt::SizeHint which, const QSizeF & /* constraint */) const
{
switch (which) {
case Qt::MinimumSize:
return QSizeF(32,32);
case Qt::PreferredSize:
return QSizeF(160,90);
case Qt::MaximumSize:
return QSizeF(1000,1000);
default:
return QSizeF(300, 300);
}
}
class CustomGraphicsWidget : public QGraphicsWidget {
public:
CustomGraphicsWidget(QSet<QGraphicsLayoutItem*> *destructedSet = 0)
: QGraphicsWidget()
{
m_destructedSet = destructedSet;
}
QSizeF sizeHint(Qt::SizeHint which, const QSizeF & constraint = QSizeF() ) const;
void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget * = 0)
{
const QRect r = option->rect.adjusted(0, 0, -1, -1);
painter->drawLine(r.topLeft(), r.bottomRight());
painter->drawLine(r.bottomLeft(), r.topRight());
painter->drawRect(r);
}
~CustomGraphicsWidget() {
if (m_destructedSet)
m_destructedSet->insert(this);
}
private:
QSet<QGraphicsLayoutItem*> *m_destructedSet;
};
QSizeF CustomGraphicsWidget::sizeHint(Qt::SizeHint which, const QSizeF & /* constraint */) const
{
switch (which) {
case Qt::MinimumSize:
return QSizeF(32,32);
case Qt::PreferredSize:
return QSizeF(160,90);
case Qt::MaximumSize:
return QSizeF(1000,1000);
default:
return QSizeF(300, 300);
}
}
static bool compareSets(const QSet<QGraphicsLayoutItem*> &actual, const QSet<QGraphicsLayoutItem*> &expected)
{
if (actual != expected) {
qDebug() << "actual:" << actual << "expected:" << expected;
return false;
}
return true;
}
class CustomLayout : public QGraphicsLayout
{
public :
CustomLayout(QGraphicsLayoutItem *parent)
: QGraphicsLayout(parent)
{
}
~CustomLayout()
{
}
int count() const
{
return items.count();
}
QGraphicsLayoutItem* itemAt(int index) const
{
return items.at(index);
}
void removeAt(int index)
{
items.removeAt(index);
}
void addItem(QGraphicsLayoutItem *item)
{
insertItem(items.count(), item);
}
void insertItem(int index, QGraphicsLayoutItem *item)
{
index = qBound(0, index, items.count());
item->setParentLayoutItem(this);
QGraphicsWidget *widget = static_cast<QGraphicsWidget *>(item);
updateParentWidget(widget);
if (index == items.count()) {
items.append(item);
} else {
items.insert(index, item);
}
updateGeometry();
activate();
}
void updateParentWidget(QGraphicsWidget *item)
{
QGraphicsLayoutItem *parentItem = parentLayoutItem();
while (parentItem && parentItem->isLayout()) {
parentItem = parentItem->parentLayoutItem();
}
if (parentItem) {
item->setParentItem(static_cast<QGraphicsWidget*>(parentItem));
}
}
QSizeF sizeHint(Qt::SizeHint /* which */, const QSizeF & /* constraint */) const
{
return QSizeF(50,50);
}
QList<QGraphicsLayoutItem*> items;
};
void tst_QGraphicsLayout::ownership()
{
QGraphicsScene scene;
QGraphicsView view(&scene);
{
QGraphicsLinearLayout *lay = new QGraphicsLinearLayout;
QSet<QGraphicsLayoutItem*> destructedSet;
CustomLayoutItem *li1 = new CustomLayoutItem(&destructedSet);
lay->addItem(li1);
CustomLayoutItem *li2 = new CustomLayoutItem(&destructedSet);
lay->addItem(li2);
CustomLayoutItem *li3 = new CustomLayoutItem(&destructedSet);
lay->addItem(li3);
destructedSet.clear();
delete lay;
QSet<QGraphicsLayoutItem*> expected;
expected << li1 << li2 << li3;
QVERIFY(compareSets(destructedSet, expected));
}
{
QGraphicsWidget *window = new QGraphicsWidget;
QGraphicsLinearLayout *lay = new QGraphicsLinearLayout;
QSet<QGraphicsLayoutItem*> destructedSet;
CustomGraphicsWidget *li1 = new CustomGraphicsWidget(&destructedSet);
lay->addItem(li1);
CustomGraphicsWidget *li2 = new CustomGraphicsWidget(&destructedSet);
lay->addItem(li2);
CustomGraphicsWidget *li3 = new CustomGraphicsWidget(&destructedSet);
lay->addItem(li3);
window->setLayout(lay);
scene.addItem(window);
destructedSet.clear();
window->setLayout(0);
QVERIFY(destructedSet.count() == 0);
delete window;
}
{
QGraphicsWidget *window = new QGraphicsWidget(0, Qt::Window);
QGraphicsLinearLayout *lay = new QGraphicsLinearLayout;
CustomGraphicsWidget *li1 = new CustomGraphicsWidget;
lay->addItem(li1);
QGraphicsLinearLayout *li2 = new QGraphicsLinearLayout;
CustomGraphicsWidget *li2_1 = new CustomGraphicsWidget;
li2->addItem(li2_1);
CustomGraphicsWidget *li2_2 = new CustomGraphicsWidget;
li2->addItem(li2_2);
CustomGraphicsWidget *li2_3 = new CustomGraphicsWidget;
li2->addItem(li2_3);
lay->addItem(li2);
CustomGraphicsWidget *li3 = new CustomGraphicsWidget;
lay->addItem(li3);
window->setLayout(lay);
scene.addItem(window);
view.resize(500, 200);
view.show();
for (int i = li2->count(); i > 0; --i) {
QCOMPARE(li2->count(), i);
delete li2->itemAt(0);
}
for (int i = lay->count(); i > 0; --i) {
QCOMPARE(lay->count(), i);
delete lay->itemAt(0);
}
delete window;
}
{
QGraphicsWidget *top = new QGraphicsWidget;
QGraphicsWidget *w = new QGraphicsWidget;
QGraphicsWidget *w2 = new QGraphicsWidget;
CustomLayout *layout = new CustomLayout(top);
layout->addItem(w);
layout->addItem(w2);
top->setLayout(layout);
delete top;
//don't crash after that.
}
}
QTEST_MAIN(tst_QGraphicsLayout)
#include "tst_qgraphicslayout.moc"
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