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qt5base-lts/tests/auto/widgets/graphicsview/qgraphicslayout/tst_qgraphicslayout.cpp
Jani Heikkinen 83a5694dc2 Update copyright headers 
Qt copyrights are now in The Qt Company, so we could update the source
code headers accordingly. In the same go we should also fix the links to
point to qt.io.

Outdated header.LGPL removed (use header.LGPL21 instead)

Old header.LGPL3 renamed to header.LGPL3-COMM to match actual licensing
combination. New header.LGPL-COMM taken in the use file which were
using old header.LGPL3 (src/plugins/platforms/android/extract.cpp)

Added new header.LGPL3 containing Commercial + LGPLv3 + GPLv2 license
combination

Change-Id: I6f49b819a8a20cc4f88b794a8f6726d975e8ffbe
Reviewed-by: Matti Paaso <matti.paaso@theqtcompany.com>
2015-02-11 06:49:51 +00:00

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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#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 sizeHintOfHiddenLayout();
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();
QVERIFY(QTest::qWaitForWindowExposed(&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);
}
void tst_QGraphicsLayout::sizeHintOfHiddenLayout()
{
QGraphicsScene scene;
QGraphicsView view(&scene);
QGraphicsWidget *window = new QGraphicsWidget(0, Qt::Window);
scene.addItem(window);
TestLayout *lout = new TestLayout(window);
lout->setContentsMargins(1,2,2,1);
QGraphicsWidget *w = new QGraphicsWidget;
w->setPreferredSize(20, 20);
w->setMaximumSize(50, 50);
lout->addItem(w);
window->setLayout(lout);
for (int pass = 0; pass < 3; ++pass) {
QCOMPARE(lout->sizeHint(Qt::MinimumSize), QSizeF(3,3));
QCOMPARE(lout->sizeHint(Qt::PreferredSize), QSizeF(23,23));
QCOMPARE(lout->sizeHint(Qt::MaximumSize), QSizeF(53,53));
window->setVisible(pass % 2);
}
}
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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