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qt5base-lts/tests/auto/qgraphicslinearlayout/tst_qgraphicslinearlayout.cpp
Jan-Arve Sæther 913ff73200 Avoid flicker when invalidate is propagated in a widget/layout hierarchy 
* Do not call invalidate from activateRecursive().
  This resulted in that a layout was invalidated as many times as there
  were items in the layout.

* Several improvements. Do not call resize(size()) too often.
  Calling resize() from the widgetEvent() is not very nice though...

* Remove commented out code

* make sure layout is activated even if the widget does not change size

* activate the layout if the resize is same as size()

* In order to not break existing apps, make this an opt-in feature
  with QGraphicsLayout::setInstantInvalidatePropagation(true);

Reviewed-by: Frederik Gladhorn
Reviewed-by: John Tapsell
2011-05-12 15:47:26 +02:00

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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** 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 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtTest/QtTest>
#include <qgraphicslinearlayout.h>
#include <qgraphicsproxywidget.h>
#include <qgraphicswidget.h>
#include <qgraphicsscene.h>
#include <qgraphicsview.h>
#include <qapplication.h>
#include <qplastiquestyle.h>
class tst_QGraphicsLinearLayout : public QObject {
Q_OBJECT
public slots:
void initTestCase();
void cleanupTestCase();
void init();
void cleanup();
private slots:
void qgraphicslinearlayout_data();
void qgraphicslinearlayout();
void alignment_data();
void alignment();
void count_data();
void count();
void dump_data();
void dump();
void geometry_data();
void geometry();
void insertItem_data();
void insertItem();
void insertStretch_data();
void insertStretch();
void invalidate_data();
void invalidate();
void itemAt_data();
void itemAt();
void itemAt_visualOrder();
void orientation_data();
void orientation();
void removeAt_data();
void removeAt();
void removeItem_data();
void removeItem();
void setGeometry_data();
void setGeometry();
void setSpacing_data();
void setSpacing();
void setItemSpacing_data();
void setItemSpacing();
void itemSpacing();
void setStretchFactor_data();
void setStretchFactor();
void testStretch();
void defaultStretchFactors_data();
void defaultStretchFactors();
void sizeHint_data();
void sizeHint();
void updateGeometry();
void layoutDirection();
void removeLayout();
void avoidRecursionInInsertItem();
void styleInfoLeak();
void testAlignmentInLargerLayout();
void testOffByOneInLargerLayout();
void testDefaultAlignment();
void combineSizePolicies();
// Task specific tests
void task218400_insertStretchCrash();
};
// Subclass that exposes the protected functions.
class SubQGraphicsLinearLayout : public QGraphicsLinearLayout {
public:
SubQGraphicsLinearLayout(Qt::Orientation orientation = Qt::Horizontal) : QGraphicsLinearLayout(orientation),
graphicsSceneResize(0),
layoutRequest(0),
layoutDirectionChange(0)
{ }
void widgetEvent(QEvent *e)
{
switch (e->type()) {
case QEvent::GraphicsSceneResize:
graphicsSceneResize++;
break;
case QEvent::LayoutRequest:
layoutRequest++;
break;
case QEvent::LayoutDirectionChange:
layoutDirectionChange++;
break;
default:
break;
}
QGraphicsLinearLayout::widgetEvent(e);
}
int graphicsSceneResize;
int layoutRequest;
int layoutDirectionChange;
};
// This will be called before the first test function is executed.
// It is only called once.
void tst_QGraphicsLinearLayout::initTestCase()
{
// since the style will influence the results, we have to ensure
// that the tests are run using the same style on all platforms
#if defined( Q_WS_S60 )|| defined (Q_WS_WINCE)
QApplication::setStyle(new QWindowsStyle);
#else
QApplication::setStyle(new QPlastiqueStyle);
#endif
}
// This will be called after the last test function is executed.
// It is only called once.
void tst_QGraphicsLinearLayout::cleanupTestCase()
{
}
// This will be called before each test function is executed.
void tst_QGraphicsLinearLayout::init()
{
}
// This will be called after every test function.
void tst_QGraphicsLinearLayout::cleanup()
{
}
class RectWidget : public QGraphicsWidget
{
public:
RectWidget(QGraphicsItem *parent = 0, const QBrush &brush = QBrush()) : QGraphicsWidget(parent){ m_brush = brush;}
void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
Q_UNUSED(option);
Q_UNUSED(widget);
painter->setBrush(m_brush);
painter->drawRoundRect(rect());
}
void setSizeHint(Qt::SizeHint which, const QSizeF &size) {
m_sizeHints[which] = size;
updateGeometry();
}
virtual QSizeF sizeHint(Qt::SizeHint which, const QSizeF &constraint = QSizeF()) const {
if (m_sizeHints[which].isValid()) {
return m_sizeHints[which];
}
return QGraphicsWidget::sizeHint(which, constraint);
}
QSizeF m_sizeHints[Qt::NSizeHints];
QBrush m_brush;
};
Q_DECLARE_METATYPE(Qt::Orientation)
void tst_QGraphicsLinearLayout::qgraphicslinearlayout_data()
{
QTest::addColumn<Qt::Orientation>("orientation");
QTest::newRow("vertical") << Qt::Vertical;
QTest::newRow("horizontal") << Qt::Horizontal;
}
void tst_QGraphicsLinearLayout::qgraphicslinearlayout()
{
QFETCH(Qt::Orientation, orientation);
SubQGraphicsLinearLayout layout(orientation);
QVERIFY(layout.isLayout());
qApp->processEvents();
QCOMPARE(layout.graphicsSceneResize, 0);
QCOMPARE(layout.layoutRequest, 0);
QCOMPARE(layout.layoutDirectionChange, 0);
layout.setOrientation(Qt::Vertical);
layout.orientation();
QTest::ignoreMessage(QtWarningMsg, "QGraphicsLinearLayout::insertItem: cannot insert null item");
QCOMPARE(layout.count(), 0);
layout.addItem(0);
QCOMPARE(layout.count(), 0);
layout.addStretch(0);
QCOMPARE(layout.count(), 0);
QTest::ignoreMessage(QtWarningMsg, "QGraphicsLinearLayout::insertItem: cannot insert null item");
layout.insertItem(0, 0);
layout.insertStretch(0, 0);
layout.removeItem(0);
QCOMPARE(layout.count(), 0);
layout.setSpacing(0);
layout.spacing();
QTest::ignoreMessage(QtWarningMsg, "QGraphicsLinearLayout::setStretchFactor: cannot assign a stretch factor to a null item");
layout.setStretchFactor(0, 0);
QTest::ignoreMessage(QtWarningMsg, "QGraphicsLinearLayout::setStretchFactor: cannot return a stretch factor for a null item");
layout.stretchFactor(0);
layout.setAlignment(0, Qt::AlignHCenter);
QCOMPARE(layout.alignment(0), 0);
layout.setGeometry(QRectF());
layout.geometry();
QCOMPARE(layout.count(), 0);
layout.invalidate();
layout.sizeHint(Qt::MinimumSize, QSizeF());
}
Q_DECLARE_METATYPE(Qt::AlignmentFlag)
void tst_QGraphicsLinearLayout::alignment_data()
{
QTest::addColumn<Qt::Orientation>("orientation");
QTest::addColumn<QSize>("newSize");
QTest::newRow("h-defaultsize") << Qt::Horizontal << QSize();
QTest::newRow("v-defaultsize") << Qt::Vertical << QSize();
QTest::newRow("h-300") << Qt::Horizontal << QSize(300,100);
QTest::newRow("v-300") << Qt::Vertical << QSize(100, 300);
}
void tst_QGraphicsLinearLayout::alignment()
{
QFETCH(Qt::Orientation, orientation);
QFETCH(QSize, newSize);
//if (alignment == Qt::AlignAbsolute)
// QApplication::setLayoutDirection(Qt::RightToLeft);
QGraphicsScene scene;
QGraphicsView view(&scene);
view.setSceneRect(0, 0, 320, 240);
QGraphicsWidget *widget = new QGraphicsWidget(0, Qt::Window);
SubQGraphicsLinearLayout &layout = *(new SubQGraphicsLinearLayout(orientation));
scene.addItem(widget);
widget->setLayout(&layout);
static const Qt::Alignment alignmentsToTest[] = {
(Qt::Alignment)0,
Qt::AlignLeft,
Qt::AlignRight,
Qt::AlignHCenter,
Qt::AlignTop,
Qt::AlignBottom,
Qt::AlignVCenter,
Qt::AlignCenter,
(Qt::Alignment)0,
Qt::AlignLeft,
Qt::AlignRight,
Qt::AlignHCenter,
Qt::AlignTop,
Qt::AlignBottom,
Qt::AlignVCenter,
Qt::AlignCenter
};
int i;
bool addWidget = true;
for (i = 0; i < sizeof(alignmentsToTest)/sizeof(Qt::Alignment); ++i) {
QGraphicsLayoutItem *loutItem;
Qt::Alignment align = alignmentsToTest[i];
if (!align && i > 0)
addWidget = false;
if (addWidget)
loutItem = new RectWidget(widget, QBrush(Qt::blue));
else {
SubQGraphicsLinearLayout *lay = new SubQGraphicsLinearLayout(Qt::Vertical);
lay->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred, QSizePolicy::DefaultType);
lay->setContentsMargins(0,0,0,0);
QGraphicsWidget *w = new RectWidget(widget, QBrush(Qt::red));
if (align) {
w->setMinimumSize(QSizeF(10,10));
w->setMaximumSize(QSizeF(10,10));
} else {
w->setMinimumSize(QSizeF(50,50));
w->setMaximumSize(QSizeF(50,50));
}
lay->addItem(w);
loutItem = lay;
}
if (align) {
loutItem->setMinimumSize(QSizeF(10,10));
loutItem->setMaximumSize(QSizeF(10,10));
} else {
loutItem->setMinimumSize(QSizeF(50,50));
loutItem->setMaximumSize(QSizeF(50,50));
}
layout.addItem(loutItem);
layout.setAlignment(loutItem, align);
}
layout.setContentsMargins(0,0,0,0);
int spacing = 1;
layout.setSpacing(spacing);
if (newSize.isValid())
widget->resize(newSize);
view.show();
widget->show();
QTest::qWaitForWindowShown(&view);
QApplication::processEvents();
int x = 0;
int y = 0;
for (i = 0; i < layout.count(); ++i) {
QGraphicsLayoutItem *item = layout.itemAt(i);
Qt::Alignment align = layout.alignment(item);
int w = 10;
int h = 10;
switch(align) {
case Qt::AlignLeft:
break;
case Qt::AlignRight:
if (orientation == Qt::Vertical)
x += 40;
break;
case Qt::AlignHCenter:
if (orientation == Qt::Vertical)
x += 20;
break;
case Qt::AlignTop:
break;
case Qt::AlignBottom:
if (orientation == Qt::Horizontal)
y += 40;
break;
case Qt::AlignVCenter:
if (orientation == Qt::Horizontal)
y += 20;
break;
case Qt::AlignCenter:
if (orientation == Qt::Horizontal)
y += 20;
else
x += 20;
break;
case 0:
w = 50;
h = 50;
break;
default:
break;
}
QRectF expectedGeometry(x, y, w, h);
QCOMPARE(item->geometry(), expectedGeometry);
if (orientation == Qt::Horizontal) {
x += w;
y = 0;
x += spacing;
} else {
x = 0;
y += h;
y += spacing;
}
}
}
void tst_QGraphicsLinearLayout::count_data()
{
QTest::addColumn<int>("itemCount");
QTest::addColumn<int>("layoutCount");
QTest::newRow("0, 0") << 0 << 0;
QTest::newRow("0, 5") << 0 << 5;
QTest::newRow("5, 0") << 5 << 0;
QTest::newRow("5, 5") << 5 << 5;
}
// int count() const public
void tst_QGraphicsLinearLayout::count()
{
QFETCH(int, itemCount);
QFETCH(int, layoutCount);
SubQGraphicsLinearLayout layout;
QCOMPARE(layout.count(), 0);
for (int i = 0; i < itemCount; ++i)
layout.addItem(new QGraphicsWidget);
QCOMPARE(layout.count(), itemCount);
for (int i = 0; i < layoutCount; ++i)
layout.addItem(new SubQGraphicsLinearLayout);
QCOMPARE(layout.count(), itemCount + layoutCount);
// see also removeAt()
}
void tst_QGraphicsLinearLayout::dump_data()
{
QTest::addColumn<int>("itemCount");
QTest::addColumn<int>("layoutCount");
for (int i = -1; i < 3; ++i) {
QTest::newRow(QString("%1, 0, 0").arg(i).toLatin1()) << 0 << 0;
QTest::newRow(QString("%1, 0, 5").arg(i).toLatin1()) << 5 << 5;
QTest::newRow(QString("%1, 5, 0").arg(i).toLatin1()) << 5 << 5;
QTest::newRow(QString("%1, 5, 5").arg(i).toLatin1()) << 5 << 5;
}
}
// void dump(int indent = 0) const public
void tst_QGraphicsLinearLayout::dump()
{
QFETCH(int, itemCount);
QFETCH(int, layoutCount);
SubQGraphicsLinearLayout layout;
for (int i = 0; i < itemCount; ++i)
layout.addItem(new QGraphicsWidget);
for (int i = 0; i < layoutCount; ++i)
layout.addItem(new SubQGraphicsLinearLayout);
}
void tst_QGraphicsLinearLayout::geometry_data()
{
QTest::addColumn<int>("itemCount");
QTest::addColumn<int>("layoutCount");
QTest::addColumn<int>("itemSpacing");
QTest::addColumn<int>("spacing");
QTest::addColumn<Qt::Orientation>("orientation");
QTest::addColumn<QRectF>("rect");
QTest::newRow("null") << 0 << 0 << 0 << 0 << Qt::Horizontal << QRectF();
QTest::newRow("one item") << 1 << 0 << 0 << 0 << Qt::Horizontal << QRectF(0, 0, 10, 10);
QTest::newRow("one layout") << 0 << 1 << 0 << 0 << Qt::Horizontal << QRectF(0, 0, 10, 10);
QTest::newRow("two h") << 1 << 1 << 0 << 0 << Qt::Horizontal << QRectF(0, 0, 20, 10);
QTest::newRow("two v") << 1 << 1 << 0 << 0 << Qt::Vertical << QRectF(0, 0, 10, 20);
QTest::newRow("two w/itemspacing") << 1 << 1 << 5 << 0 << Qt::Horizontal << QRectF(0, 0, 25, 10);
QTest::newRow("two w/spacing") << 1 << 1 << 8 << 0 << Qt::Horizontal << QRectF(0, 0, 28, 10);
QTest::newRow("two w/itemspacing v") << 1 << 1 << 5 << 0 << Qt::Vertical << QRectF(0, 0, 10, 25);
QTest::newRow("two w/spacing v") << 1 << 1 << 8 << 0 << Qt::Vertical << QRectF(0, 0, 10, 28);
}
// QRectF geometry() const public
void tst_QGraphicsLinearLayout::geometry()
{
QFETCH(int, itemCount);
QFETCH(int, layoutCount);
QFETCH(int, itemSpacing);
QFETCH(int, spacing);
QFETCH(Qt::Orientation, orientation);
QFETCH(QRectF, rect);
QGraphicsScene scene;
QGraphicsView view(&scene);
QGraphicsWidget *widget = new QGraphicsWidget(0, Qt::Window);
SubQGraphicsLinearLayout &layout = *(new SubQGraphicsLinearLayout(orientation));
scene.addItem(widget);
widget->setLayout(&layout);
widget->setContentsMargins(0, 0, 0, 0);
for (int i = 0; i < itemCount; ++i)
layout.addItem(new QGraphicsWidget);
for (int i = 0; i < layoutCount; ++i)
layout.addItem(new SubQGraphicsLinearLayout);
for (int i = 0; i < layout.count(); ++i) {
QGraphicsLayoutItem *item = layout.itemAt(i);
item->setMaximumSize(10, 10);
item->setMinimumSize(10, 10);
}
layout.setItemSpacing(0, itemSpacing);
layout.setSpacing(spacing);
layout.setContentsMargins(0, 0, 0, 0);
widget->show();
view.show();
QApplication::processEvents();
QCOMPARE(layout.geometry(), rect);
delete widget;
}
void tst_QGraphicsLinearLayout::insertItem_data()
{
QTest::addColumn<int>("itemCount");
QTest::addColumn<int>("layoutCount");
QTest::addColumn<int>("insertItemAt");
QTest::addColumn<bool>("isWidget");
for (int i = -1; i < 4; ++i) {
for (int j = 0; j < 2; ++j) {
QTest::newRow(QString("0, 0, %1 %2").arg(i).arg(j).toLatin1()) << 0 << 0 << i << (bool)j;
QTest::newRow(QString("1, 0, %1 %2").arg(i).arg(j).toLatin1()) << 1 << 0 << i << (bool)j;
QTest::newRow(QString("0, 1, %1 %2").arg(i).arg(j).toLatin1()) << 0 << 1 << i << (bool)j;
QTest::newRow(QString("2, 2, %1 %2").arg(i).arg(j).toLatin1()) << 2 << 2 << i << (bool)j;
}
}
}
// void insertItem(int index, QGraphicsLayoutItem* item) public
void tst_QGraphicsLinearLayout::insertItem()
{
QFETCH(int, itemCount);
QFETCH(int, layoutCount);
QFETCH(int, insertItemAt);
QFETCH(bool, isWidget);
if (insertItemAt > layoutCount + itemCount)
return;
SubQGraphicsLinearLayout layout;
for (int i = 0; i < itemCount; ++i)
layout.addItem(new QGraphicsWidget);
for (int i = 0; i < layoutCount; ++i)
layout.addItem(new SubQGraphicsLinearLayout);
QGraphicsLayoutItem *item = 0;
if (isWidget)
item = new QGraphicsWidget;
else
item = new SubQGraphicsLinearLayout;
QSizeF oldSizeHint = layout.sizeHint(Qt::PreferredSize, QSizeF());
layout.insertItem(insertItemAt, item);
QCOMPARE(layout.count(), itemCount + layoutCount + 1);
if (insertItemAt >= 0 && (itemCount + layoutCount >= 0)) {
QCOMPARE(layout.itemAt(insertItemAt), item);
}
layout.activate();
QSizeF newSizeHint = layout.sizeHint(Qt::PreferredSize, QSizeF());
if (!isWidget && layout.count() == 1)
QCOMPARE(oldSizeHint.width(), newSizeHint.width());
else if (itemCount + layoutCount > 0)
QVERIFY(oldSizeHint.width() < newSizeHint.width());
}
void tst_QGraphicsLinearLayout::insertStretch_data()
{
QTest::addColumn<int>("itemCount");
QTest::addColumn<int>("layoutCount");
QTest::addColumn<int>("insertItemAt");
QTest::addColumn<int>("stretch");
for (int i = -1; i < 4; ++i) {
for (int j = 0; j < 2; ++j) {
QTest::newRow(QString("0, 0, %1 %2").arg(i).arg(j).toLatin1()) << 0 << 0 << i << j;
QTest::newRow(QString("1, 0, %1 %2").arg(i).arg(j).toLatin1()) << 1 << 0 << i << j;
QTest::newRow(QString("0, 1, %1 %2").arg(i).arg(j).toLatin1()) << 0 << 1 << i << j;
QTest::newRow(QString("2, 2, %1 %2").arg(i).arg(j).toLatin1()) << 2 << 2 << i << j;
}
}
}
// void insertStretch(int index, int stretch = 1) public
void tst_QGraphicsLinearLayout::insertStretch()
{
QFETCH(int, itemCount);
QFETCH(int, layoutCount);
QFETCH(int, insertItemAt);
QFETCH(int, stretch);
if (insertItemAt > layoutCount + itemCount)
return;
QGraphicsScene scene;
QGraphicsView view(&scene);
QGraphicsWidget *widget = new QGraphicsWidget(0, Qt::Window);
SubQGraphicsLinearLayout *layout = new SubQGraphicsLinearLayout;
scene.addItem(widget);
QList<QGraphicsWidget *>items;
QGraphicsWidget *item = 0;
for (int i = 0; i < itemCount; ++i) {
item = new RectWidget;
item->setMinimumSize(10, 10);
item->setPreferredSize(25, 25);
item->setMaximumSize(50, 50);
layout->addItem(item);
}
for (int i = 0; i < layoutCount; ++i) {
item = new RectWidget;
item->setMinimumSize(10, 10);
item->setPreferredSize(25, 25);
item->setMaximumSize(50, 50);
SubQGraphicsLinearLayout *sublayout = new SubQGraphicsLinearLayout;
sublayout->addItem(item);
layout->addItem(sublayout);
}
widget->setLayout(layout);
layout->insertStretch(insertItemAt, stretch);
QCOMPARE(layout->count(), itemCount + layoutCount);
layout->activate();
view.show();
widget->show();
int prevStretch = -2;
int prevWidth = -2;
widget->resize((layoutCount + itemCount) * 25 + 25, 25);
for (int i = 0; i < layout->count(); ++i) {
if (QGraphicsLayoutItem *item = layout->itemAt(i)) {
if (prevStretch != -2) {
if (layout->stretchFactor(item) >= prevStretch) {
QVERIFY(item->geometry().width() >= prevWidth);
} else {
QVERIFY(item->geometry().width() < prevWidth);
}
}
prevStretch = layout->stretchFactor(item);
prevWidth = (int)(item->geometry().width());
}
}
//QTest::qWait(1000);
delete widget;
}
void tst_QGraphicsLinearLayout::invalidate_data()
{
QTest::addColumn<int>("count");
QTest::newRow("0") << 0;
QTest::newRow("1") << 1;
QTest::newRow("2") << 2;
QTest::newRow("3") << 3;
}
// void invalidate() public
void tst_QGraphicsLinearLayout::invalidate()
{
QFETCH(int, count);
QGraphicsScene scene;
QGraphicsView view(&scene);
QGraphicsWidget *widget = new QGraphicsWidget(0, Qt::Window);
SubQGraphicsLinearLayout &layout = *(new SubQGraphicsLinearLayout);
scene.addItem(widget);
widget->setLayout(&layout);
widget->setContentsMargins(0, 0, 0, 0);
layout.setContentsMargins(0, 0, 0, 0);
view.show();
widget->show();
//QTest::qWait(1000);
QTest::qWaitForWindowShown(&view);
qApp->processEvents();
layout.layoutRequest = 0;
layout.setContentsMargins(1, 2, 3, 4);
QApplication::sendPostedEvents(0, 0);
QCOMPARE(layout.layoutRequest, 1);
layout.setOrientation(Qt::Vertical);
QApplication::sendPostedEvents(0, 0);
QCOMPARE(layout.layoutRequest, 2);
for (int i = 0; i < count; ++i)
layout.invalidate(); // Event is compressed, should only get one layoutrequest
QApplication::sendPostedEvents(0, 0);
QCOMPARE(layout.layoutRequest, count ? 3 : 2);
delete widget;
}
void tst_QGraphicsLinearLayout::itemAt_data()
{
QTest::addColumn<int>("index");
QTest::newRow("0") << 0;
QTest::newRow("1") << 1;
QTest::newRow("2") << 2;
}
// QGraphicsLayoutItem* itemAt(int index) const public
void tst_QGraphicsLinearLayout::itemAt()
{
// see also the insertItem() etc tests
QFETCH(int, index);
SubQGraphicsLinearLayout layout;
for (int i = 0; i < 3; ++i)
layout.addItem(new QGraphicsWidget);
QVERIFY(layout.itemAt(index) != 0);
}
void tst_QGraphicsLinearLayout::itemAt_visualOrder()
{
QGraphicsLinearLayout *l = new QGraphicsLinearLayout;
QGraphicsWidget *w1 = new QGraphicsWidget;
l->addItem(w1);
QGraphicsWidget *w3 = new QGraphicsWidget;
l->addItem(w3);
QGraphicsWidget *w0 = new QGraphicsWidget;
l->insertItem(0, w0);
QGraphicsWidget *w2 = new QGraphicsWidget;
l->insertItem(2, w2);
QCOMPARE(l->itemAt(0), static_cast<QGraphicsLayoutItem*>(w0));
QCOMPARE(l->itemAt(1), static_cast<QGraphicsLayoutItem*>(w1));
QCOMPARE(l->itemAt(2), static_cast<QGraphicsLayoutItem*>(w2));
QCOMPARE(l->itemAt(3), static_cast<QGraphicsLayoutItem*>(w3));
}
void tst_QGraphicsLinearLayout::orientation_data()
{
QTest::addColumn<Qt::Orientation>("orientation");
QTest::newRow("vertical") << Qt::Vertical;
QTest::newRow("horizontal") << Qt::Horizontal;
}
// Qt::Orientation orientation() const public
void tst_QGraphicsLinearLayout::orientation()
{
QFETCH(Qt::Orientation, orientation);
QGraphicsScene scene;
QGraphicsView view(&scene);
QGraphicsWidget *widget = new QGraphicsWidget(0, Qt::Window);
Qt::Orientation initialOrientation = (orientation == Qt::Vertical ? Qt::Horizontal : Qt::Vertical);
SubQGraphicsLinearLayout &layout = *(new SubQGraphicsLinearLayout(initialOrientation));
scene.addItem(widget);
widget->setLayout(&layout);
widget->setContentsMargins(0, 0, 0, 0);
layout.setContentsMargins(0, 0, 0, 0);
int i;
int itemCount = 3;
for (i = 0; i < itemCount; ++i)
layout.addItem(new RectWidget);
QCOMPARE(layout.orientation(), initialOrientation);
QList<qreal> positions;
view.show();
widget->show();
qApp->processEvents();
for (i = 0; i < itemCount; ++i) {
QGraphicsWidget *item = static_cast<QGraphicsWidget*>(layout.itemAt(i));
qreal pos;
if (initialOrientation == Qt::Horizontal)
pos = item->pos().x();
else
pos = item->pos().y();
positions.append(pos);
}
layout.setOrientation(orientation);
QCOMPARE(layout.orientation(), orientation);
// important to resize to preferredsize when orientation is switched
widget->resize(widget->effectiveSizeHint(Qt::PreferredSize));
qApp->processEvents();
for (i = 0; i < positions.count(); ++i) {
QGraphicsWidget *item = static_cast<QGraphicsWidget*>(layout.itemAt(i));
if (initialOrientation == Qt::Horizontal)
QCOMPARE(item->pos().y(), positions.at(i));
else
QCOMPARE(item->pos().x(), positions.at(i));
}
//QSKIP("LayoutdirectionChange should only posted when QGraphicsWidget::setLayoutDirection() is called, right?", SkipAll);
//QCOMPARE(layout.layoutDirectionChange, 1);
}
void tst_QGraphicsLinearLayout::removeAt_data()
{
QTest::addColumn<int>("itemCount");
QTest::addColumn<int>("layoutCount");
QTest::addColumn<int>("removeItemAt");
QTest::addColumn<Qt::Orientation>("orientation");
for (int i = -1; i < 4; ++i) {
for (int k = 0; k < 2; ++k) {
Qt::Orientation orientation = (k == 0) ? Qt::Vertical : Qt::Horizontal;
QTest::newRow(QString("0, 0, %1").arg(i).toLatin1()) << 0 << 0 << i << orientation;
QTest::newRow(QString("1, 0, %1").arg(i).toLatin1()) << 1 << 0 << i << orientation;
QTest::newRow(QString("0, 1, %1").arg(i).toLatin1()) << 0 << 1 << i << orientation;
QTest::newRow(QString("2, 2, %1").arg(i).toLatin1()) << 2 << 2 << i << orientation;
}
}
}
// void removeAt(int index) public
void tst_QGraphicsLinearLayout::removeAt()
{
QFETCH(int, itemCount);
QFETCH(int, layoutCount);
QFETCH(int, removeItemAt);
QFETCH(Qt::Orientation, orientation);
if (removeItemAt >= layoutCount + itemCount)
return;
SubQGraphicsLinearLayout layout(orientation);
for (int i = 0; i < itemCount; ++i)
layout.addItem(new QGraphicsWidget);
for (int i = 0; i < layoutCount; ++i)
layout.addItem(new SubQGraphicsLinearLayout);
QSizeF oldSizeHint = layout.sizeHint(Qt::PreferredSize, QSizeF());
QGraphicsLayoutItem *w = 0;
if (removeItemAt >= 0 && removeItemAt < layout.count())
w = layout.itemAt(removeItemAt);
if (w) {
QGraphicsLayoutItem *wParent = w->parentLayoutItem();
QCOMPARE(wParent, static_cast<QGraphicsLayoutItem *>(&layout));
layout.removeAt(removeItemAt);
wParent = w->parentLayoutItem();
QCOMPARE(wParent, static_cast<QGraphicsLayoutItem *>(0));
delete w;
}
QCOMPARE(layout.count(), itemCount + layoutCount - (w ? 1 : 0));
layout.activate();
QSizeF newSizeHint = layout.sizeHint(Qt::PreferredSize, QSizeF());
if (orientation == Qt::Horizontal)
QVERIFY(oldSizeHint.width() >= newSizeHint.width());
else
QVERIFY(oldSizeHint.height() >= newSizeHint.height());
}
void tst_QGraphicsLinearLayout::removeItem_data()
{
QTest::addColumn<int>("itemCount");
QTest::addColumn<int>("layoutCount");
QTest::addColumn<int>("removeItemAt");
for (int i = -1; i < 4; ++i) {
QTest::newRow(QString("0, 0, %1").arg(i).toLatin1()) << 0 << 0 << i;
QTest::newRow(QString("1, 0, %1").arg(i).toLatin1()) << 1 << 0 << i;
QTest::newRow(QString("0, 1, %1").arg(i).toLatin1()) << 0 << 1 << i;
QTest::newRow(QString("2, 2, %1").arg(i).toLatin1()) << 2 << 2 << i;
}
}
// void removeItem(QGraphicsLayoutItem* item) public
void tst_QGraphicsLinearLayout::removeItem()
{
QFETCH(int, itemCount);
QFETCH(int, layoutCount);
QFETCH(int, removeItemAt);
if (removeItemAt >= layoutCount + itemCount)
return;
SubQGraphicsLinearLayout layout;
for (int i = 0; i < itemCount; ++i)
layout.addItem(new QGraphicsWidget);
for (int i = 0; i < layoutCount; ++i)
layout.addItem(new SubQGraphicsLinearLayout);
QGraphicsLayoutItem *w = 0;
if (removeItemAt >= 0 && removeItemAt < layout.count())
w = layout.itemAt(removeItemAt);
QSizeF oldSizeHint = layout.sizeHint(Qt::PreferredSize, QSizeF());
if (w) {
layout.removeItem(w);
delete w;
}
QCOMPARE(layout.count(), itemCount + layoutCount - (w ? 1 : 0));
layout.activate();
QSizeF newSizeHint = layout.sizeHint(Qt::PreferredSize, QSizeF());
QVERIFY(oldSizeHint.width() >= newSizeHint.width());
}
void tst_QGraphicsLinearLayout::setGeometry_data()
{
QTest::addColumn<QRectF>("rect");
QTest::newRow("null") << QRectF();
QTest::newRow("small") << QRectF(0, 0, 10, 10);
}
// void setGeometry(QRectF const& rect) public
void tst_QGraphicsLinearLayout::setGeometry()
{
QFETCH(QRectF, rect);
QGraphicsScene scene;
QGraphicsView view(&scene);
QGraphicsWidget *widget = new QGraphicsWidget(0, Qt::Window);
SubQGraphicsLinearLayout &layout = *(new SubQGraphicsLinearLayout);
scene.addItem(widget);
widget->setLayout(&layout);
widget->setContentsMargins(0, 0, 0, 0);
layout.setContentsMargins(0, 0, 0, 0);
layout.setMaximumSize(100, 100);
view.show();
widget->show();
QApplication::processEvents();
widget->setGeometry(rect);
QCOMPARE(layout.geometry(), rect);
// see also geometry()
delete widget;
}
void tst_QGraphicsLinearLayout::setSpacing_data()
{
QTest::addColumn<qreal>("spacing");
QTest::newRow("0") << (qreal)0;
QTest::newRow("5") << (qreal)5;
QTest::newRow("3.3") << (qreal)3.3;
QTest::newRow("-4.3") << (qreal)4.3;
}
// void setSpacing(qreal spacing) public
void tst_QGraphicsLinearLayout::setSpacing()
{
QFETCH(qreal, spacing);
QGraphicsScene scene;
QGraphicsView view(&scene);
QGraphicsWidget *widget = new QGraphicsWidget(0, Qt::Window);
SubQGraphicsLinearLayout &layout = *(new SubQGraphicsLinearLayout);
scene.addItem(widget);
widget->setLayout(&layout);
layout.setContentsMargins(0, 0, 0, 0);
qreal oldSpacing = layout.spacing();
if (oldSpacing != -1) {
for (int i = 0; i < 3; ++i)
layout.addItem(new QGraphicsWidget);
QSizeF oldSizeHint = layout.sizeHint(Qt::PreferredSize);
layout.setSpacing(spacing);
QCOMPARE(layout.spacing(), spacing);
view.show();
widget->show();
QApplication::processEvents();
QSizeF newSizeHint = layout.sizeHint(Qt::PreferredSize);
QCOMPARE(oldSizeHint.width() - oldSpacing * 2, newSizeHint.width() - spacing * 2);
} else {
QSKIP("This style uses non-uniform spacings (layoutSpacingImplementation() is reimplemented)", SkipAll);
}
delete widget;
}
void tst_QGraphicsLinearLayout::setItemSpacing_data()
{
QTest::addColumn<int>("index");
QTest::addColumn<int>("spacing");
QTest::newRow("0 at 0") << 0 << 0;
QTest::newRow("10 at 0") << 0 << 10;
QTest::newRow("10 at 1") << 1 << 10;
QTest::newRow("10 at the end") << 4 << 10;
}
void tst_QGraphicsLinearLayout::setItemSpacing()
{
QFETCH(int, index);
QFETCH(int, spacing);
QGraphicsScene scene;
QGraphicsView view(&scene);
QGraphicsWidget *widget = new QGraphicsWidget(0, Qt::Window);
SubQGraphicsLinearLayout *layout = new SubQGraphicsLinearLayout;
scene.addItem(widget);
widget->setLayout(layout);
layout->setContentsMargins(0, 0, 0, 0);
for (int i = 0; i < 5; ++i) {
QGraphicsWidget *w = new QGraphicsWidget;
layout->addItem(w);
}
QSizeF oldSizeHint = layout->sizeHint(Qt::PreferredSize);
qreal oldSpacing = 0;
if (index < layout->count() - 1)
oldSpacing = layout->spacing();
else
spacing = 0;
layout->setItemSpacing(index, spacing);
view.show();
QApplication::processEvents();
QSizeF newSizeHint = layout->sizeHint(Qt::PreferredSize);
if (oldSpacing >= 0) {
QCOMPARE(newSizeHint.width() - spacing, oldSizeHint.width() - oldSpacing);
} else {
QSKIP("This style uses non-uniform spacings (layoutSpacingImplementation() is reimplemented)", SkipAll);
}
delete widget;
}
void tst_QGraphicsLinearLayout::itemSpacing()
{
QGraphicsScene scene;
QGraphicsView view(&scene);
QGraphicsWidget *widget = new QGraphicsWidget(0, Qt::Window);
SubQGraphicsLinearLayout *layout = new SubQGraphicsLinearLayout;
scene.addItem(widget);
widget->setLayout(layout);
layout->setContentsMargins(0, 0, 0, 0);
for (int i = 0; i < 5; ++i) {
QGraphicsWidget *w = new QGraphicsWidget;
layout->addItem(w);
}
// Check defaults
qreal defaultSpacing = layout->spacing();
if (defaultSpacing >= 0) {
QCOMPARE(layout->itemSpacing(0), defaultSpacing);
} else {
// all widgets are the same, so the spacing should be uniform
QCOMPARE(layout->itemSpacing(0), layout->itemSpacing(1));
}
layout->setItemSpacing(1, 42);
QCOMPARE(layout->itemSpacing(1), qreal(42));
// try to unset
layout->setItemSpacing(1, -1);
QCOMPARE(layout->itemSpacing(1), defaultSpacing);
delete widget;
}
/**
* The stretch factors are not applied linearly, but they are used together with both the preferred size, maximum size to form the
* internal effective stretch factor.
* There is only need to apply stretch factors if the size of the layout is different than the layouts preferred size.
* (If the size of the layout is the preferred size, then all items should get their preferred sizes.
* However, imagine this use case:
* Layout
* +----------+----------+----------+
* name | A | B | C |
* stretch | 1 | 2 | 3 |
* sizehints|[5,10,50] |[5,10,50] |[5,10,50] |
* +----------+----------+----------+
*
* layout->resize(120, h)
*
* In QLayout, C would become 50, B would become 50 and A would get 20. When scaling a layout this would give a jerky feeling, since
* the item with the highest stretch factor will first resize. When that has reached its maximum the next candidate for stretch will
* resize, and finally, item with the lowest stretch factor will resize.
* In QGraphicsLinearLayout we try to scale all items so that they all reach their maximum at the same time. This means that
* their relative sizes are not proportional to their stretch factors.
*/
typedef QList<int> IntList;
Q_DECLARE_METATYPE(IntList)
Q_DECLARE_METATYPE(qreal)
void tst_QGraphicsLinearLayout::setStretchFactor_data()
{
QTest::addColumn<qreal>("totalSize");
QTest::addColumn<IntList>("stretches");
QTest::newRow(QString("60 [1,2]").toLatin1()) << qreal(60.0) << (IntList() << 1 << 2);
QTest::newRow(QString("60 [1,2,3]").toLatin1()) << qreal(60.0) << (IntList() << 1 << 2 << 3);
QTest::newRow(QString("120 [1,2,3,6]").toLatin1()) << qreal(120.0) << (IntList() << 1 << 2 << 3 << 6);
}
// void setStretchFactor(QGraphicsLayoutItem* item, int stretch) public
void tst_QGraphicsLinearLayout::setStretchFactor()
{
QFETCH(qreal, totalSize);
QFETCH(IntList, stretches);
//QSKIP("Seems to be some problems with stretch factors. Talk with Jasmin", SkipAll);
QGraphicsScene scene;
QGraphicsView view(&scene);
QGraphicsWidget *widget = new QGraphicsWidget(0, Qt::Window);
SubQGraphicsLinearLayout &layout = *(new SubQGraphicsLinearLayout);
scene.addItem(widget);
widget->setLayout(&layout);
layout.setContentsMargins(0, 0, 0, 0);
layout.setSpacing(0.0);
widget->setContentsMargins(0, 0, 0, 0);
int i;
for (i = 0; i < stretches.count(); ++i) {
QGraphicsWidget *item = new RectWidget(widget);
item->setMinimumSize(5,5);
item->setPreferredSize(10,5);
item->setMaximumSize(50,5);
layout.addItem(item);
layout.setStretchFactor(item, stretches.at(i));
}
widget->resize(totalSize, 10);
QApplication::processEvents();
view.show();
widget->show();
qreal firstStretch = -1;
qreal firstExtent = -1.;
qreal sumExtent = 0;
for (i = 0; i < stretches.count(); ++i) {
QGraphicsWidget *item = static_cast<QGraphicsWidget*>(layout.itemAt(i));
qreal extent = item->size().width();
qreal stretch = (qreal)stretches.at(i);
if (firstStretch != -1 && firstExtent != -1) {
// The resulting widths does not correspond linearly to the stretch factors.
if (stretch == firstStretch)
QCOMPARE(extent, firstExtent);
else if (stretch > firstStretch)
QVERIFY(extent > firstExtent);
else
QVERIFY(extent < firstExtent);
} else {
firstStretch = (qreal)stretch;
firstExtent = extent;
}
sumExtent+= extent;
}
QCOMPARE(sumExtent, totalSize);
delete widget;
}
void tst_QGraphicsLinearLayout::testStretch()
{
QGraphicsScene scene;
QGraphicsView *view = new QGraphicsView(&scene);
QGraphicsWidget *form = new QGraphicsWidget(0, Qt::Window);
scene.addItem(form);
form->setMinimumSize(600, 600);
form->setMaximumSize(600, 600);
QGraphicsLinearLayout *layout = new QGraphicsLinearLayout(Qt::Horizontal, form);
QGraphicsWidget *w1 = new RectWidget;
w1->setPreferredSize(100,100);
w1->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
QGraphicsWidget *w2 = new RectWidget;
w2->setPreferredSize(200,200);
w2->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
layout->setSpacing(0);
layout->setContentsMargins(0, 0, 0, 0);
layout->addItem(w1);
layout->addStretch(2);
layout->addItem(w2);
QCOMPARE(layout->count(), 2);
QVERIFY(layout->itemAt(0) == w1);
QVERIFY(layout->itemAt(1) == w2);
layout->activate();
//view->setSceneRect(-50, -50, 800, 800);
//view->show();
//QTest::qWaitForWindowShown(view);
//QTest::qWait(5000);
QCOMPARE(form->geometry().size(), QSizeF(600,600));
QCOMPARE(w1->geometry(), QRectF(0, 0, 100, 100));
QCOMPARE(w2->geometry(), QRectF(400, 0, 200, 200));
}
void tst_QGraphicsLinearLayout::defaultStretchFactors_data()
{
QTest::addColumn<Qt::Orientation>("orientation");
QTest::addColumn<int>("count");
QTest::addColumn<IntList>("preferredSizeHints");
QTest::addColumn<IntList>("stretches");
QTest::addColumn<IntList>("ignoreFlag");
QTest::addColumn<QSizeF>("newSize");
QTest::addColumn<IntList>("expectedSizes");
QTest::newRow("hor") << Qt::Horizontal << 3
<< (IntList() << 20 << 40 << 60)
<< (IntList())
<< (IntList())
<< QSizeF()
<< (IntList() << 20 << 40 << 60);
QTest::newRow("ver") << Qt::Vertical << 3
<< (IntList() << 20 << 40 << 60)
<< (IntList())
<< (IntList())
<< QSizeF()
<< (IntList() << 20 << 40 << 60);
QTest::newRow("hor,ignore123") << Qt::Horizontal << 3
<< (IntList() << 20 << 40 << 60)
<< (IntList())
<< (IntList() << 1 << 1 << 1)
<< QSizeF()
<< (IntList() << 0 << 0 << 0);
QTest::newRow("hor,ignore23") << Qt::Horizontal << 3
<< (IntList() << 10 << 10 << 10)
<< (IntList())
<< (IntList() << 0 << 1 << 1)
<< QSizeF(200, 50)
<< (IntList()); //### stretches are not linear.
QTest::newRow("hor,ignore2") << Qt::Horizontal << 3
<< (IntList() << 10 << 10 << 10)
<< (IntList())
<< (IntList() << 0 << 1 << 0)
<< QSizeF()
<< (IntList() << 10 << 0 << 10);
}
void tst_QGraphicsLinearLayout::defaultStretchFactors()
{
QFETCH(Qt::Orientation, orientation);
QFETCH(int, count);
QFETCH(IntList, preferredSizeHints);
QFETCH(IntList, stretches);
QFETCH(IntList, ignoreFlag);
QFETCH(QSizeF, newSize);
QFETCH(IntList, expectedSizes);
QGraphicsScene scene;
QGraphicsView view(&scene);
QGraphicsWidget *widget = new QGraphicsWidget(0, Qt::Window);
SubQGraphicsLinearLayout *layout = new SubQGraphicsLinearLayout(orientation);
scene.addItem(widget);
widget->setLayout(layout);
layout->setContentsMargins(0, 0, 0, 0);
layout->setSpacing(0.0);
widget->setContentsMargins(0, 0, 0, 0);
int i;
for (i = 0; i < count; ++i) {
RectWidget *item = new RectWidget(widget);
layout->addItem(item);
if (preferredSizeHints.value(i, -1) >= 0) {
item->setSizeHint(Qt::PreferredSize, QSizeF(preferredSizeHints.at(i), preferredSizeHints.at(i)));
}
if (stretches.value(i, -1) >= 0) {
layout->setStretchFactor(item, stretches.at(i));
}
if (ignoreFlag.value(i, 0) != 0) {
QSizePolicy sp = item->sizePolicy();
if (orientation == Qt::Horizontal)
sp.setHorizontalPolicy(QSizePolicy::Policy(sp.horizontalPolicy() | QSizePolicy::IgnoreFlag));
else
sp.setVerticalPolicy(QSizePolicy::Policy(sp.verticalPolicy() | QSizePolicy::IgnoreFlag));
item->setSizePolicy(sp);
}
}
QApplication::processEvents();
widget->show();
view.show();
view.resize(400,300);
if (newSize.isValid())
widget->resize(newSize);
QApplication::processEvents();
for (i = 0; i < count; ++i) {
QSizeF itemSize = layout->itemAt(i)->geometry().size();
if (orientation == Qt::Vertical)
itemSize.transpose();
if (i < expectedSizes.count())
QCOMPARE(itemSize.width(), qreal(expectedSizes.at(i)));
}
delete widget;
}
Q_DECLARE_METATYPE(Qt::SizeHint)
void tst_QGraphicsLinearLayout::sizeHint_data()
{
QTest::addColumn<Qt::SizeHint>("which");
QTest::addColumn<QSizeF>("constraint");
QTest::addColumn<qreal>("spacing");
QTest::addColumn<qreal>("layoutMargin");
QTest::addColumn<QSizeF>("sizeHint");
QTest::newRow("minimumSize") << Qt::MinimumSize << QSizeF() << qreal(0.0) << qreal(0.0) << QSizeF(30, 10);
QTest::newRow("preferredSize") << Qt::PreferredSize << QSizeF() << qreal(0.0) << qreal(0.0) << QSizeF(75, 25);
QTest::newRow("maximumSize") << Qt::MaximumSize << QSizeF() << qreal(0.0) << qreal(0.0) << QSizeF(150, 50);
QTest::newRow("minimumSize, spacing=3") << Qt::MinimumSize << QSizeF() << qreal(3.0) << qreal(0.0) << QSizeF(30 + 2*3, 10);
QTest::newRow("minimumSize, spacing=3, layoutMargin=10") << Qt::MinimumSize << QSizeF() << qreal(3.0) << qreal(10.0) << QSizeF(30 + 2*3 + 2*10, 10 + 2*10);
QTest::newRow("minimumSize, spacing=0, layoutMargin=7") << Qt::MinimumSize << QSizeF() << qreal(0.0) << qreal(7.0) << QSizeF(30 + 0 + 2*7, 10 + 2*7);
}
// QSizeF sizeHint(Qt::SizeHint which, QSizeF const& constraint) const public
void tst_QGraphicsLinearLayout::sizeHint()
{
QFETCH(Qt::SizeHint, which);
QFETCH(QSizeF, constraint);
QFETCH(qreal, spacing);
QFETCH(qreal, layoutMargin);
QFETCH(QSizeF, sizeHint);
QGraphicsScene scene;
QGraphicsView view(&scene);
QGraphicsWidget *widget = new QGraphicsWidget(0, Qt::Window);
SubQGraphicsLinearLayout &layout = *(new SubQGraphicsLinearLayout);
scene.addItem(widget);
widget->setLayout(&layout);
layout.setContentsMargins(layoutMargin, layoutMargin, layoutMargin, layoutMargin);
layout.setSpacing(spacing);
for (int i = 0; i < 3; ++i) {
QGraphicsWidget *item = new QGraphicsWidget(widget);
item->setMinimumSize(10, 10);
item->setPreferredSize(25, 25);
item->setMaximumSize(50, 50);
layout.addItem(item);
}
QApplication::processEvents();
QCOMPARE(layout.sizeHint(which, constraint), sizeHint);
delete widget;
}
void tst_QGraphicsLinearLayout::updateGeometry()
{
QGraphicsScene scene;
QGraphicsView view(&scene);
QGraphicsWidget *window = new QGraphicsWidget(0, Qt::Window);
QGraphicsWidget *w1 = new QGraphicsWidget(window);
w1->setMinimumSize(100, 40);
SubQGraphicsLinearLayout *layout = new SubQGraphicsLinearLayout;
layout->addItem(w1);
scene.addItem(window);
window->setLayout(layout);
layout->setContentsMargins(0, 0, 0, 0);
QCOMPARE(w1->parentLayoutItem(), static_cast<QGraphicsLayoutItem*>(layout));
QCOMPARE(layout->parentLayoutItem(), static_cast<QGraphicsLayoutItem*>(window));
view.show();
QApplication::processEvents();
QCOMPARE(window->size().toSize(), QSize(100, 50));
w1->setMinimumSize(110, 60);
QApplication::processEvents();
QCOMPARE(window->size().toSize(), QSize(110, 60));
QApplication::processEvents();
{
delete window;
window = new QGraphicsWidget(0, Qt::Window);
SubQGraphicsLinearLayout *layout2a = new SubQGraphicsLinearLayout;
QGraphicsWidget *w1 = new QGraphicsWidget(window);
w1->setMinimumSize(110, 50);
layout2a->addItem(w1);
SubQGraphicsLinearLayout *layout2 = new SubQGraphicsLinearLayout;
layout2->addItem(layout2a);
layout2->setContentsMargins(1, 1, 1, 1);
layout2a->setContentsMargins(1, 1, 1, 1);
window->setLayout(layout2);
QApplication::processEvents();
QCOMPARE(w1->parentLayoutItem(), static_cast<QGraphicsLayoutItem*>(layout2a));
QCOMPARE(layout2a->parentLayoutItem(), static_cast<QGraphicsLayoutItem*>(layout2));
QCOMPARE(layout2->parentLayoutItem(), static_cast<QGraphicsLayoutItem*>(window));
QCOMPARE(window->size().toSize(), QSize(114, 54));
QApplication::processEvents();
w1->setMinimumSize(120, 60);
QApplication::processEvents();
QCOMPARE(window->size().toSize(), QSize(124, 64));
}
{
delete window;
window = new QGraphicsWidget(0, Qt::Window);
scene.addItem(window);
window->show();
QGraphicsWidget *w1 = new QGraphicsWidget(window);
w1->setMinimumSize(100, 50);
SubQGraphicsLinearLayout *layout2a = new SubQGraphicsLinearLayout;
layout2a->addItem(w1);
SubQGraphicsLinearLayout *layout2 = new SubQGraphicsLinearLayout;
layout2->addItem(layout2a);
layout2a->setContentsMargins(1, 1, 1, 1);
window->setLayout(layout2);
QApplication::processEvents();
qreal left, top, right, bottom;
layout2->getContentsMargins(&left, &top, &right, &bottom);
QCOMPARE(window->size().toSize(), QSize(102 +left + right, 52 + top + bottom));
}
{
delete window;
window = new QGraphicsWidget(0, Qt::Window);
scene.addItem(window);
QGraphicsWidget *w1 = new QGraphicsWidget(window);
w1->setMinimumSize(100, 50);
window->setLayout(0);
SubQGraphicsLinearLayout *layout2a = new SubQGraphicsLinearLayout;
layout2a->addItem(w1);
SubQGraphicsLinearLayout *layout2 = new SubQGraphicsLinearLayout;
layout2->addItem(layout2a);
window->resize(200, 80);
window->setLayout(layout2);
window->show();
QApplication::processEvents();
QCOMPARE(window->size().toSize(), QSize(200, 80));
}
}
void tst_QGraphicsLinearLayout::layoutDirection()
{
QGraphicsScene scene;
QGraphicsView view(&scene);
QGraphicsWidget *window = new QGraphicsWidget(0, Qt::Window);
QGraphicsLinearLayout *layout = new QGraphicsLinearLayout;
layout->setContentsMargins(1, 2, 3, 4);
layout->setSpacing(6);
RectWidget *w1 = new RectWidget;
w1->setPreferredSize(20, 20);
w1->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
layout->addItem(w1);
RectWidget *w2 = new RectWidget;
w2->setPreferredSize(20, 20);
w2->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
layout->addItem(w2);
scene.addItem(window);
window->setLayout(layout);
view.show();
window->resize(50, 20);
window->setLayoutDirection(Qt::LeftToRight);
QApplication::processEvents();
QCOMPARE(w1->geometry().left(), 1.0);
QCOMPARE(w1->geometry().right(), 21.0);
QCOMPARE(w2->geometry().left(), 27.0);
QCOMPARE(w2->geometry().right(), 47.0);
window->setLayoutDirection(Qt::RightToLeft);
QApplication::processEvents();
QCOMPARE(w1->geometry().right(), 49.0);
QCOMPARE(w1->geometry().left(), 29.0);
QCOMPARE(w2->geometry().right(), 23.0);
QCOMPARE(w2->geometry().left(), 3.0);
delete window;
}
void tst_QGraphicsLinearLayout::removeLayout()
{
QGraphicsScene scene;
RectWidget *textEdit = new RectWidget;
RectWidget *pushButton = new RectWidget;
scene.addItem(textEdit);
scene.addItem(pushButton);
QGraphicsLinearLayout *layout = new QGraphicsLinearLayout;
layout->addItem(textEdit);
layout->addItem(pushButton);
QGraphicsWidget *form = new QGraphicsWidget;
form->setLayout(layout);
scene.addItem(form);
QGraphicsView view(&scene);
view.show();
QTest::qWait(20);
QRectF r1 = textEdit->geometry();
QRectF r2 = pushButton->geometry();
form->setLayout(0);
//documentation of QGraphicsWidget::setLayout:
//If layout is 0, the widget is left without a layout. Existing subwidgets' geometries will remain unaffected.
QCOMPARE(textEdit->geometry(), r1);
QCOMPARE(pushButton->geometry(), r2);
}
void tst_QGraphicsLinearLayout::avoidRecursionInInsertItem()
{
QGraphicsWidget window(0, Qt::Window);
QGraphicsLinearLayout *layout = new QGraphicsLinearLayout(&window);
QCOMPARE(layout->count(), 0);
QTest::ignoreMessage(QtWarningMsg, "QGraphicsLinearLayout::insertItem: cannot insert itself");
layout->insertItem(0, layout);
QCOMPARE(layout->count(), 0);
}
void tst_QGraphicsLinearLayout::styleInfoLeak()
{
QGraphicsLinearLayout layout;
layout.spacing();
}
void tst_QGraphicsLinearLayout::task218400_insertStretchCrash()
{
QGraphicsScene *scene = new QGraphicsScene;
QGraphicsWidget *a = scene->addWidget(new QWidget);
QGraphicsWidget *b = scene->addWidget(new QWidget);
QGraphicsLinearLayout *layout = new QGraphicsLinearLayout;
layout->addItem(a);
layout->addItem(b);
layout->insertStretch(0); // inserts gap in item grid in the layout engine
QGraphicsWidget *form = new QGraphicsWidget;
form->setLayout(layout); // crash
}
void tst_QGraphicsLinearLayout::testAlignmentInLargerLayout()
{
QGraphicsScene *scene = new QGraphicsScene;
QGraphicsWidget *form = new QGraphicsWidget;
scene->addItem(form);
QGraphicsLinearLayout *layout = new QGraphicsLinearLayout(Qt::Vertical, form);
layout->setSpacing(0);
layout->setContentsMargins(0,0,0,0);
QGraphicsWidget *a = new QGraphicsWidget;
a->setMaximumSize(100,100);
layout->addItem(a);
QCOMPARE(form->maximumSize(), QSizeF(100,100));
QCOMPARE(layout->maximumSize(), QSizeF(100,100));
layout->setMinimumSize(QSizeF(200,200));
layout->setMaximumSize(QSizeF(200,200));
layout->setAlignment(a, Qt::AlignCenter);
layout->activate();
QCOMPARE(a->geometry(), QRectF(50,50,100,100));
layout->setAlignment(a, Qt::AlignRight | Qt::AlignBottom);
layout->activate();
QCOMPARE(a->geometry(), QRectF(100,100,100,100));
layout->setAlignment(a, Qt::AlignHCenter | Qt::AlignTop);
layout->activate();
QCOMPARE(a->geometry(), QRectF(50,0,100,100));
QGraphicsWidget *b = new QGraphicsWidget;
b->setMaximumSize(100,100);
layout->addItem(b);
layout->setAlignment(a, Qt::AlignCenter);
layout->setAlignment(b, Qt::AlignCenter);
layout->activate();
QCOMPARE(a->geometry(), QRectF(50,0,100,100));
QCOMPARE(b->geometry(), QRectF(50,100,100,100));
layout->setAlignment(a, Qt::AlignRight | Qt::AlignBottom);
layout->setAlignment(b, Qt::AlignLeft | Qt::AlignTop);
layout->activate();
QCOMPARE(a->geometry(), QRectF(100,0,100,100));
QCOMPARE(b->geometry(), QRectF(0,100,100,100));
}
void tst_QGraphicsLinearLayout::testOffByOneInLargerLayout() {
QGraphicsScene *scene = new QGraphicsScene;
QGraphicsWidget *form = new QGraphicsWidget;
scene->addItem(form);
QGraphicsLinearLayout *layout = new QGraphicsLinearLayout(Qt::Vertical, form);
layout->setSpacing(0);
layout->setContentsMargins(0,0,0,0);
QGraphicsWidget *a = new QGraphicsWidget;
QGraphicsWidget *b = new QGraphicsWidget;
a->setMaximumSize(100,100);
b->setMaximumSize(100,100);
layout->addItem(a);
layout->addItem(b);
layout->setAlignment(a, Qt::AlignRight | Qt::AlignBottom);
layout->setAlignment(b, Qt::AlignLeft | Qt::AlignTop);
layout->setMinimumSize(QSizeF(101,201));
layout->setMaximumSize(QSizeF(101,201));
layout->activate();
QCOMPARE(a->geometry(), QRectF(1,0.5,100,100));
QCOMPARE(b->geometry(), QRectF(0,100.5,100,100));
layout->setMinimumSize(QSizeF(100,200));
layout->setMaximumSize(QSizeF(100,200));
layout->activate();
QCOMPARE(a->geometry(), QRectF(0,0,100,100));
QCOMPARE(b->geometry(), QRectF(0,100,100,100));
layout->setMinimumSize(QSizeF(99,199));
layout->setMaximumSize(QSizeF(99,199));
layout->activate();
QCOMPARE(a->geometry(), QRectF(0,0,99,99.5));
QCOMPARE(b->geometry(), QRectF(0,99.5,99,99.5));
}
void tst_QGraphicsLinearLayout::testDefaultAlignment()
{
QGraphicsWidget *widget = new QGraphicsWidget;
QGraphicsLinearLayout *layout = new QGraphicsLinearLayout(Qt::Vertical, widget);
layout->setContentsMargins(0, 0, 0, 0);
layout->setSpacing(0);
QGraphicsWidget *w = new QGraphicsWidget;
w->setMinimumSize(50,50);
w->setMaximumSize(50,50);
layout->addItem(w);
//Default alignment should be to the top-left
QCOMPARE(layout->alignment(w), 0);
//First, check by forcing the layout to be bigger
layout->setMinimumSize(100,100);
layout->activate();
QCOMPARE(layout->geometry(), QRectF(0,0,100,100));
QCOMPARE(w->geometry(), QRectF(0,0,50,50));
layout->setMinimumSize(-1,-1);
//Second, check by adding a larger item in the column
QGraphicsWidget *w2 = new QGraphicsWidget;
w2->setMinimumSize(100,100);
w2->setMaximumSize(100,100);
layout->addItem(w2);
layout->activate();
QCOMPARE(layout->geometry(), QRectF(0,0,100,150));
QCOMPARE(w->geometry(), QRectF(0,0,50,50));
QCOMPARE(w2->geometry(), QRectF(0,50,100,100));
}
void tst_QGraphicsLinearLayout::combineSizePolicies()
{
QGraphicsWidget *widget = new QGraphicsWidget;
QGraphicsLinearLayout *layout = new QGraphicsLinearLayout(Qt::Horizontal, widget);
layout->setContentsMargins(0, 0, 0, 0);
layout->setSpacing(0);
QGraphicsWidget *w1 = new QGraphicsWidget;
w1->setMaximumSize(200,200);
w1->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
layout->addItem(w1);
QGraphicsWidget *w2 = new QGraphicsWidget;
w2->setPreferredSize(50,50);
w2->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
layout->addItem(w2);
QCOMPARE(layout->maximumHeight(), qreal(200));
// now remove the fixed vertical size policy, and set instead the maximum height to 50
// this should in effect give the same maximumHeight
w2->setMaximumHeight(50);
w2->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Preferred);
QCOMPARE(layout->maximumHeight(), qreal(200));
}
QTEST_MAIN(tst_QGraphicsLinearLayout)
#include "tst_qgraphicslinearlayout.moc"
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