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qt5base-lts/tests/auto/qabstractscrollarea/tst_qabstractscrollarea.cpp
Qt by Nokia 38be0d1383 Initial import from the monolithic Qt. 
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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12
2011-04-27 12:05:43 +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 <qcoreapplication.h>
#include <qdebug.h>
#include <qabstractscrollarea.h>
#include <qscrollarea.h>
#include <qscrollbar.h>
#include <qlabel.h>
#include <qwidget.h>
#include <qdialog.h>
//TESTED_CLASS=
//TESTED_FILES=
class tst_QAbstractScrollArea : public QObject
{
Q_OBJECT
public:
tst_QAbstractScrollArea();
virtual ~tst_QAbstractScrollArea();
private slots:
void scrollBarWidgets();
void setScrollBars();
void setScrollBars2();
void objectNaming();
void patternBackground();
void viewportCrash();
void task214488_layoutDirection_data();
void task214488_layoutDirection();
};
tst_QAbstractScrollArea::tst_QAbstractScrollArea()
{
}
tst_QAbstractScrollArea::~tst_QAbstractScrollArea()
{
}
void tst_QAbstractScrollArea::scrollBarWidgets()
{
QWidget *w1 = new QWidget(0);
QWidget *w2 = new QWidget(0);
QWidget *w3 = new QWidget(0);
Qt::Alignment all = Qt::AlignLeft | Qt::AlignRight | Qt::AlignTop | Qt::AlignBottom;
QWidgetList w1List = QWidgetList() << w1;
QWidgetList w2List = QWidgetList() << w2;
QWidgetList w3List = QWidgetList() << w3;
QWidgetList w1w2List = w1List + w2List;
QWidgetList allList = w1List + w2List + w3List;
QAbstractScrollArea area;
area.show();
QCOMPARE(area.scrollBarWidgets(all), QWidgetList());
area.addScrollBarWidget(w1, Qt::AlignLeft);
QCOMPARE(area.scrollBarWidgets(all), w1List);
QCOMPARE(area.scrollBarWidgets(Qt::AlignLeft), w1List);
QCOMPARE(area.scrollBarWidgets(Qt::AlignRight), QWidgetList());
QCOMPARE(area.scrollBarWidgets(Qt::AlignTop), QWidgetList());
QCOMPARE(area.scrollBarWidgets(Qt::AlignBottom), QWidgetList());
area.addScrollBarWidget(w2, Qt::AlignBottom);
QCOMPARE(area.scrollBarWidgets(all), w1w2List);
QCOMPARE(area.scrollBarWidgets(Qt::AlignLeft), w1List);
QCOMPARE(area.scrollBarWidgets(Qt::AlignRight), QWidgetList());
QCOMPARE(area.scrollBarWidgets(Qt::AlignTop), QWidgetList());
QCOMPARE(area.scrollBarWidgets(Qt::AlignBottom), w2List);
// duplicate add
area.addScrollBarWidget(w2, Qt::AlignBottom);
QCOMPARE(area.scrollBarWidgets(all), w1w2List);
QCOMPARE(area.scrollBarWidgets(Qt::AlignLeft), w1List);
QCOMPARE(area.scrollBarWidgets(Qt::AlignRight), QWidgetList());
QCOMPARE(area.scrollBarWidgets(Qt::AlignTop), QWidgetList());
QCOMPARE(area.scrollBarWidgets(Qt::AlignBottom), w2List);
//reparent
w2->setParent(w1);
QCOMPARE(area.scrollBarWidgets(all), w1List);
QCOMPARE(area.scrollBarWidgets(Qt::AlignLeft), w1List);
QCOMPARE(area.scrollBarWidgets(Qt::AlignRight), QWidgetList());
QCOMPARE(area.scrollBarWidgets(Qt::AlignTop), QWidgetList());
QCOMPARE(area.scrollBarWidgets(Qt::AlignBottom), QWidgetList());
// add after reparent
area.addScrollBarWidget(w2, Qt::AlignBottom);
QCOMPARE(area.scrollBarWidgets(all), w1w2List);
QCOMPARE(area.scrollBarWidgets(Qt::AlignLeft), w1List);
QCOMPARE(area.scrollBarWidgets(Qt::AlignRight), QWidgetList());
QCOMPARE(area.scrollBarWidgets(Qt::AlignTop), QWidgetList());
QCOMPARE(area.scrollBarWidgets(Qt::AlignBottom), w2List);
// two widgets at Bottom.
area.addScrollBarWidget(w3, Qt::AlignBottom);
QCOMPARE(area.scrollBarWidgets(all).toSet(), allList.toSet());
QCOMPARE(area.scrollBarWidgets(Qt::AlignLeft), w1List);
QCOMPARE(area.scrollBarWidgets(Qt::AlignRight), QWidgetList());
QCOMPARE(area.scrollBarWidgets(Qt::AlignTop), QWidgetList());
QCOMPARE(area.scrollBarWidgets(Qt::AlignBottom).toSet(), (w2List + w3List).toSet());
//delete
delete w1;
delete w2;
delete w3;
QCOMPARE(area.scrollBarWidgets(all), QWidgetList());
QCOMPARE(area.scrollBarWidgets(Qt::AlignLeft), QWidgetList());
QCOMPARE(area.scrollBarWidgets(Qt::AlignRight), QWidgetList());
QCOMPARE(area.scrollBarWidgets(Qt::AlignTop), QWidgetList());
QCOMPARE(area.scrollBarWidgets(Qt::AlignBottom), QWidgetList());
}
void tst_QAbstractScrollArea::setScrollBars()
{
QScrollArea scrollArea;
scrollArea.resize(300, 300);
scrollArea.show();
QPointer<QScrollBar> vbar = scrollArea.verticalScrollBar();
QPointer<QScrollBar> hbar = scrollArea.horizontalScrollBar();
// Now set properties on the scroll bars
scrollArea.verticalScrollBar()->setInvertedAppearance(true);
scrollArea.verticalScrollBar()->setInvertedControls(true);
scrollArea.verticalScrollBar()->setTracking(true);
scrollArea.verticalScrollBar()->setRange(-100, 100);
scrollArea.verticalScrollBar()->setPageStep(42);
scrollArea.verticalScrollBar()->setSingleStep(3);
scrollArea.verticalScrollBar()->setValue(43);
scrollArea.horizontalScrollBar()->setInvertedAppearance(true);
scrollArea.horizontalScrollBar()->setInvertedControls(true);
scrollArea.horizontalScrollBar()->setTracking(true);
scrollArea.horizontalScrollBar()->setRange(-100, 100);
scrollArea.horizontalScrollBar()->setPageStep(42);
scrollArea.horizontalScrollBar()->setSingleStep(3);
scrollArea.horizontalScrollBar()->setValue(43);
qApp->processEvents();
// Then replace the scroll bars
scrollArea.setVerticalScrollBar(new QScrollBar);
scrollArea.setHorizontalScrollBar(new QScrollBar);
// Check that the old ones were deleted
QVERIFY(!vbar);
QVERIFY(!hbar);
qApp->processEvents();
// Check that all properties have been populated
QVERIFY(scrollArea.verticalScrollBar()->invertedAppearance());
QVERIFY(scrollArea.verticalScrollBar()->invertedControls());
QVERIFY(scrollArea.verticalScrollBar()->hasTracking());
QVERIFY(scrollArea.verticalScrollBar()->isVisible());
QCOMPARE(scrollArea.verticalScrollBar()->minimum(), -100);
QCOMPARE(scrollArea.verticalScrollBar()->maximum(), 100);
QCOMPARE(scrollArea.verticalScrollBar()->pageStep(), 42);
QCOMPARE(scrollArea.verticalScrollBar()->singleStep(), 3);
QCOMPARE(scrollArea.verticalScrollBar()->value(), 43);
QVERIFY(scrollArea.horizontalScrollBar()->invertedAppearance());
QVERIFY(scrollArea.horizontalScrollBar()->invertedControls());
QVERIFY(scrollArea.horizontalScrollBar()->hasTracking());
QVERIFY(scrollArea.horizontalScrollBar()->isVisible());
QCOMPARE(scrollArea.horizontalScrollBar()->minimum(), -100);
QCOMPARE(scrollArea.horizontalScrollBar()->maximum(), 100);
QCOMPARE(scrollArea.horizontalScrollBar()->pageStep(), 42);
QCOMPARE(scrollArea.horizontalScrollBar()->singleStep(), 3);
QCOMPARE(scrollArea.horizontalScrollBar()->value(), 43);
}
void tst_QAbstractScrollArea::setScrollBars2()
{
QAbstractScrollArea scrollArea;
scrollArea.resize(300, 300);
QScrollBar *hbar = new QScrollBar;
scrollArea.setHorizontalScrollBar(hbar);
qApp->processEvents();
QCOMPARE(scrollArea.horizontalScrollBar(), hbar);
QScrollBar *vbar = new QScrollBar;
scrollArea.setVerticalScrollBar(vbar);
qApp->processEvents();
QCOMPARE(scrollArea.verticalScrollBar(), vbar);
scrollArea.horizontalScrollBar()->setRange(0, 100);
scrollArea.verticalScrollBar()->setRange(0, 100);
scrollArea.show();
// Make sure scroll bars are not explicitly hidden by QAbstractScrollArea itself.
QVERIFY(hbar->isVisible());
QVERIFY(vbar->isVisible());
// Hide the OLD scroll bar and ensure that the NEW one is hidden.
hbar->hide();
scrollArea.setHorizontalScrollBar(new QScrollBar);
qApp->processEvents();
QVERIFY(!scrollArea.horizontalScrollBar()->isVisible());
vbar->hide();
scrollArea.setVerticalScrollBar(new QScrollBar);
qApp->processEvents();
QVERIFY(!scrollArea.verticalScrollBar()->isVisible());
scrollArea.verticalScrollBar()->show();
scrollArea.horizontalScrollBar()->show();
// Hide the NEW scroll bar and ensure that it's visible
// (because the OLD one is visible).
hbar = new QScrollBar;
hbar->hide();
scrollArea.setHorizontalScrollBar(hbar);
qApp->processEvents();
QVERIFY(hbar->isVisible());
vbar = new QScrollBar;
vbar->hide();
scrollArea.setVerticalScrollBar(vbar);
qApp->processEvents();
QVERIFY(vbar->isVisible());
vbar->setRange(0, 0);
qApp->processEvents();
QVERIFY(!vbar->isVisible());
hbar->setRange(0, 0);
qApp->processEvents();
QVERIFY(!hbar->isVisible());
}
// we need to make sure the viewport internal widget is named
// qt_scrollarea_viewport, otherwise we're going to confuse Squish
// and friends.
void tst_QAbstractScrollArea::objectNaming()
{
QScrollArea area;
QCOMPARE(area.viewport()->objectName(), QString("qt_scrollarea_viewport"));
}
class ViewportCrashWidget : public QDialog
{
public:
ViewportCrashWidget()
{
// temprorary set PaintOnScreen to set the nativeChildrenForced flag.
setAttribute(Qt::WA_PaintOnScreen, true);
setAttribute(Qt::WA_PaintOnScreen, false);
setAttribute(Qt::WA_DropSiteRegistered, true);
startTimer(2000);
}
void timerEvent(QTimerEvent *event)
{
// should not crash.
(void)new QScrollArea(this);
accept();
}
};
void tst_QAbstractScrollArea::viewportCrash()
{
ViewportCrashWidget w;
// should not crash
w.exec();
}
Q_DECLARE_METATYPE(Qt::LayoutDirection);
Q_DECLARE_METATYPE(Qt::Key);
void tst_QAbstractScrollArea::task214488_layoutDirection_data()
{
QTest::addColumn<Qt::LayoutDirection>("dir");
QTest::addColumn<Qt::Key>("key");
QTest::addColumn<bool>("lessThan");
QTest::newRow("LTR left") << Qt::LeftToRight << Qt::Key_Left << true;
QTest::newRow("LTR right") << Qt::LeftToRight << Qt::Key_Right << false;
QTest::newRow("RTL left") << Qt::RightToLeft << Qt::Key_Left << false;
QTest::newRow("RTL right") << Qt::RightToLeft << Qt::Key_Right << true;
}
void tst_QAbstractScrollArea::task214488_layoutDirection()
{
QScrollArea scrollArea;
scrollArea.resize(200, 200);
QWidget widget;
widget.resize(600, 600);
scrollArea.setWidget(&widget);
scrollArea.show();
QScrollBar *hbar = scrollArea.horizontalScrollBar();
hbar->setValue((hbar->minimum() + hbar->maximum()) / 2);
QFETCH(Qt::LayoutDirection, dir);
QFETCH(Qt::Key, key);
QFETCH(bool, lessThan);
scrollArea.setLayoutDirection(dir);
int refValue = hbar->value();
qApp->sendEvent(&scrollArea, new QKeyEvent(QEvent::KeyPress, key, Qt::NoModifier));
QVERIFY(lessThan ? (hbar->value() < refValue) : (hbar->value() > refValue));
}
void tst_QAbstractScrollArea::patternBackground()
{
QWidget topLevel;
QScrollArea scrollArea(&topLevel);
scrollArea.resize(200, 200);
QWidget widget;
widget.resize(600, 600);
scrollArea.setWidget(&widget);
topLevel.show();
QLinearGradient linearGrad(QPointF(250, 250), QPointF(300, 300));
linearGrad.setColorAt(0, Qt::yellow);
linearGrad.setColorAt(1, Qt::red);
QBrush bg(linearGrad);
scrollArea.viewport()->setPalette(QPalette(Qt::black, bg, bg, bg, bg, bg, bg, bg, bg));
widget.setPalette(Qt::transparent);
QTest::qWait(50);
QImage image(200, 200, QImage::Format_ARGB32);
scrollArea.render(&image);
QCOMPARE(image.pixel(QPoint(20,20)) , QColor(Qt::yellow).rgb());
QScrollBar *hbar = scrollArea.horizontalScrollBar();
hbar->setValue(hbar->maximum());
QScrollBar *vbar = scrollArea.verticalScrollBar();
vbar->setValue(vbar->maximum());
QTest::qWait(50);
scrollArea.render(&image);
QCOMPARE(image.pixel(QPoint(20,20)) , QColor(Qt::red).rgb());
}
QTEST_MAIN(tst_QAbstractScrollArea)
#include "tst_qabstractscrollarea.moc"
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