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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include <QTest>
#include <QScrollBar>
#include <QStyleOptionSlider>
#include <QScrollArea>
#include <QScreen>
#include <QSignalSpy>
#include <QtTest/private/qtesthelpers_p.h>
using namespace QTestPrivate;
class tst_QScrollBar : public QObject
{
Q_OBJECT
private slots:
void scrollSingleStep();
void task_209492();
#if QT_CONFIG(wheelevent)
void QTBUG_27308();
#endif
void QTBUG_42871();
};
class SingleStepTestScrollBar : public QScrollBar {
Q_OBJECT
public:
explicit SingleStepTestScrollBar(Qt::Orientation o, QWidget *parent = nullptr) : QScrollBar(o, parent) {}
public slots:
void hideAndShow()
{
hide();
show();
}
};
// Check that the scrollbar doesn't scroll after calling hide and show
// from a slot connected to the scrollbar's actionTriggered signal.
void tst_QScrollBar::scrollSingleStep()
{
SingleStepTestScrollBar testWidget(Qt::Horizontal);
connect(&testWidget, &QAbstractSlider::actionTriggered, &testWidget, &SingleStepTestScrollBar::hideAndShow);
testWidget.resize(100, testWidget.height());
centerOnScreen(&testWidget);
testWidget.show();
QVERIFY(QTest::qWaitForWindowExposed(&testWidget));
testWidget.setValue(testWidget.minimum());
QCOMPARE(testWidget.value(), testWidget.minimum());
// Get rect for the area to click on
const QStyleOptionSlider opt = qt_qscrollbarStyleOption(&testWidget);
QRect sr = testWidget.style()->subControlRect(QStyle::CC_ScrollBar, &opt,
QStyle::SC_ScrollBarAddLine, &testWidget);
if (!sr.isValid())
QSKIP("SC_ScrollBarAddLine not valid");
QTest::mouseClick(&testWidget, Qt::LeftButton, Qt::NoModifier, QPoint(sr.x(), sr.y()));
QTest::qWait(510); // initial delay is 500 for setRepeatAction
disconnect(&testWidget, &QAbstractSlider::actionTriggered, &testWidget, &SingleStepTestScrollBar::hideAndShow);
#ifdef Q_OS_MAC
QEXPECT_FAIL("", "This test fails on OS X, see QTBUG-25272", Abort);
#endif
QCOMPARE(testWidget.value(), testWidget.singleStep());
}
void tst_QScrollBar::task_209492()
{
class MyScrollArea : public QScrollArea
{
public:
int scrollCount;
MyScrollArea(QWidget *parent = nullptr) : QScrollArea(parent), scrollCount(0) {}
protected:
void paintEvent(QPaintEvent *) override { QTest::qSleep(600); }
void scrollContentsBy(int, int) override { ++scrollCount; viewport()->update(); }
};
MyScrollArea scrollArea;
QScrollBar *verticalScrollBar = scrollArea.verticalScrollBar();
verticalScrollBar->setRange(0, 1000);
centerOnScreen(&scrollArea);
scrollArea.show();
QVERIFY(QTest::qWaitForWindowExposed(&scrollArea));
QSignalSpy spy(verticalScrollBar, SIGNAL(actionTriggered(int)));
QCOMPARE(scrollArea.scrollCount, 0);
QCOMPARE(spy.count(), 0);
// Simulate a mouse click on the "scroll down button".
const QPoint pressPoint(verticalScrollBar->width() / 2, verticalScrollBar->height() - 10);
const QPoint globalPressPoint = verticalScrollBar->mapToGlobal(pressPoint);
QMouseEvent mousePressEvent(QEvent::MouseButtonPress, pressPoint, globalPressPoint,
Qt::LeftButton, Qt::LeftButton, {});
QApplication::sendEvent(verticalScrollBar, &mousePressEvent);
QTest::qWait(1);
QMouseEvent mouseReleaseEvent(QEvent::MouseButtonRelease, pressPoint, globalPressPoint,
Qt::LeftButton, Qt::LeftButton, {});
QApplication::sendEvent(verticalScrollBar, &mouseReleaseEvent);
// Check that the action was triggered once.
#ifdef Q_OS_MAC
QSKIP("The result depends on system setting and is not relevant on Mac");
#endif
QCOMPARE(scrollArea.scrollCount, 1);
QCOMPARE(spy.count(), 1);
}
#if QT_CONFIG(wheelevent)
#define WHEEL_DELTA 120 // copied from tst_QAbstractSlider / tst_QComboBox
void tst_QScrollBar::QTBUG_27308()
{
// QTBUG-27308
// Check that a disabled scrollbar doesn't react on wheel events anymore
QScrollBar testWidget(Qt::Horizontal);
testWidget.resize(100, testWidget.height());
centerOnScreen(&testWidget);
testWidget.show();
QVERIFY(QTest::qWaitForWindowExposed(&testWidget));
testWidget.setValue(testWidget.minimum());
testWidget.setEnabled(false);
const QPoint wheelPoint = testWidget.rect().center();
const QPoint angleDelta(testWidget.orientation() == Qt::Horizontal ? -WHEEL_DELTA : 0,
testWidget.orientation() == Qt::Vertical ? -WHEEL_DELTA : 0);
QWheelEvent event(wheelPoint, testWidget.mapToGlobal(wheelPoint), QPoint(), angleDelta,
Qt::NoButton, Qt::NoModifier, Qt::NoScrollPhase, false);
qApp->sendEvent(&testWidget, &event);
QCOMPARE(testWidget.value(), testWidget.minimum());
}
#endif
class QTBUG_42871_Handler : public QObject {
Q_OBJECT
public:
int updatesCount;
QTBUG_42871_Handler() : QObject(), updatesCount(0) {}
public slots:
void valueUpdated(int) { ++updatesCount; QTest::qSleep(600); }
};
void tst_QScrollBar::QTBUG_42871()
{
QTBUG_42871_Handler myHandler;
QScrollBar scrollBarWidget(Qt::Vertical);
bool connection = connect(&scrollBarWidget, SIGNAL(valueChanged(int)), &myHandler, SLOT(valueUpdated(int)));
QVERIFY(connection);
scrollBarWidget.resize(100, scrollBarWidget.height());
centerOnScreen(&scrollBarWidget);
scrollBarWidget.show();
QVERIFY(QTest::qWaitForWindowExposed(&scrollBarWidget));
QSignalSpy spy(&scrollBarWidget, SIGNAL(actionTriggered(int)));
QVERIFY(spy.isValid());
QCOMPARE(myHandler.updatesCount, 0);
QCOMPARE(spy.count(), 0);
// Simulate a mouse click on the "scroll down button".
const QPoint pressPoint(scrollBarWidget.width() / 2, scrollBarWidget.height() - 10);
const QPoint globalPressPoint = scrollBarWidget.mapToGlobal(pressPoint);
QMouseEvent mousePressEvent(QEvent::MouseButtonPress, pressPoint, globalPressPoint,
Qt::LeftButton, Qt::LeftButton, {});
QApplication::sendEvent(&scrollBarWidget, &mousePressEvent);
QElapsedTimer timer;
timer.start();
QTest::qWait(1);
QMouseEvent mouseReleaseEvent(QEvent::MouseButtonRelease, pressPoint, globalPressPoint,
Qt::LeftButton, Qt::LeftButton, {});
QApplication::sendEvent(&scrollBarWidget, &mouseReleaseEvent);
if (timer.elapsed() > 40) {
// took too long, we need to tolerate auto-repeat
if (myHandler.updatesCount > 1)
QEXPECT_FAIL("", "Took too long to process events, repeat timer fired", Continue);
}
// Check that the action was triggered once.
QCOMPARE(myHandler.updatesCount, 1);
QCOMPARE(spy.count(), myHandler.updatesCount);
}
QTEST_MAIN(tst_QScrollBar)
#include "tst_qscrollbar.moc"
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