/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** 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 https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/


#include <QTest>
#include <QSignalSpy>
#include <QtGui/QGuiApplication>
#include <QtGui/QWindow>
#include <QtGui/QScreen>
#include <QtGui/QCursor>
#include <QtGui/QFont>
#include <QtGui/QPalette>
#include <QtGui/QStyleHints>
#include <qpa/qplatformintegration.h>
#include <qpa/qwindowsysteminterface.h>
#include <qgenericplugin.h>

#include <private/qguiapplication_p.h>

#if defined(Q_OS_QNX)
#include <QOpenGLContext>
#endif

#include <QtGui/private/qopenglcontext_p.h>

#include <QDebug>

#include "tst_qcoreapplication.h"

enum { spacing  = 50, windowSize = 200 };

class tst_QGuiApplication: public tst_QCoreApplication
{
    Q_OBJECT

private slots:
    void initTestCase();
    void cleanup();
    void displayName();
    void desktopFileName();
    void firstWindowTitle();
    void windowIcon();
    void focusObject();
    void allWindows();
    void topLevelWindows();
    void abortQuitOnShow();
    void changeFocusWindow();
    void keyboardModifiers();
    void palette();
    void font();
    void modalWindow();
    void quitOnLastWindowClosed();
    void quitOnLastWindowClosedMulti();
    void dontQuitOnLastWindowClosed();
    void genericPluginsAndWindowSystemEvents();
    void layoutDirection();
    void globalShareContext();
    void testSetPaletteAttribute();

    void staticFunctions();

    void settableStyleHints_data();
    void settableStyleHints(); // Needs to run last as it changes style hints.
};

void tst_QGuiApplication::initTestCase()
{
#ifdef QT_QPA_DEFAULT_PLATFORM_NAME
    if ((QString::compare(QStringLiteral(QT_QPA_DEFAULT_PLATFORM_NAME),
         QStringLiteral("eglfs"), Qt::CaseInsensitive) == 0) ||
        (QString::compare(QString::fromLatin1(qgetenv("QT_QPA_PLATFORM")),
         QStringLiteral("eglfs"), Qt::CaseInsensitive) == 0)) {
        // Set env variables to disable input and cursor because eglfs is single fullscreen window
        // and trying to initialize input and cursor will crash test.
        qputenv("QT_QPA_EGLFS_DISABLE_INPUT", "1");
        qputenv("QT_QPA_EGLFS_HIDECURSOR", "1");
    }
#endif
}

void tst_QGuiApplication::cleanup()
{
    QVERIFY(QGuiApplication::allWindows().isEmpty());
}

void tst_QGuiApplication::displayName()
{
    int argc = 1;
    char *argv[] = { const_cast<char*>("tst_qguiapplication") };
    QGuiApplication app(argc, argv);
    QSignalSpy spy(&app, &QGuiApplication::applicationDisplayNameChanged);

    QCOMPARE(::qAppName(), QString::fromLatin1("tst_qguiapplication"));
    QCOMPARE(QGuiApplication::applicationName(), QString::fromLatin1("tst_qguiapplication"));
    QCOMPARE(QGuiApplication::applicationDisplayName(), QString::fromLatin1("tst_qguiapplication"));

    QGuiApplication::setApplicationName("The Core Application");
    QCOMPARE(QGuiApplication::applicationName(), QString::fromLatin1("The Core Application"));
    QCOMPARE(QGuiApplication::applicationDisplayName(), QString::fromLatin1("The Core Application"));
    QCOMPARE(spy.count(), 1);

    QGuiApplication::setApplicationDisplayName("The GUI Application");
    QCOMPARE(QGuiApplication::applicationDisplayName(), QString::fromLatin1("The GUI Application"));
    QCOMPARE(spy.count(), 2);

    QGuiApplication::setApplicationName("The Core Application 2");
    QCOMPARE(QGuiApplication::applicationName(), QString::fromLatin1("The Core Application 2"));
    QCOMPARE(QGuiApplication::applicationDisplayName(), QString::fromLatin1("The GUI Application"));
    QCOMPARE(spy.count(), 2);

    QGuiApplication::setApplicationDisplayName("The GUI Application 2");
    QCOMPARE(QGuiApplication::applicationDisplayName(), QString::fromLatin1("The GUI Application 2"));
    QCOMPARE(spy.count(), 3);
}

void tst_QGuiApplication::desktopFileName()
{
    int argc = 1;
    char *argv[] = { const_cast<char*>("tst_qguiapplication") };
    QGuiApplication app(argc, argv);

    QCOMPARE(QGuiApplication::desktopFileName(), QString());

    QGuiApplication::setDesktopFileName("io.qt.QGuiApplication.desktop");
    QCOMPARE(QGuiApplication::desktopFileName(), QString::fromLatin1("io.qt.QGuiApplication.desktop"));

    QGuiApplication::setDesktopFileName(QString());
    QCOMPARE(QGuiApplication::desktopFileName(), QString());
}

void tst_QGuiApplication::firstWindowTitle()
{
    int argc = 3;
    char *argv[] = { const_cast<char*>("tst_qguiapplication"), const_cast<char*>("-qwindowtitle"), const_cast<char*>("User Title") };
    QGuiApplication app(argc, argv);
    QWindow window;
    window.setTitle("Application Title");
    window.show();
    QCOMPARE(window.title(), QString("User Title"));
}

void tst_QGuiApplication::windowIcon()
{
    int argc = 3;
    char *argv[] = { const_cast<char*>("tst_qguiapplication"), const_cast<char*>("-qwindowicon"), const_cast<char*>(":/icons/usericon.png") };
    QGuiApplication app(argc, argv);
    QIcon appIcon(":/icons/appicon.png");
    app.setWindowIcon(appIcon);

    QWindow window;
    window.show();

    QIcon userIcon(":/icons/usericon.png");
    // Comparing icons is hard. cacheKey() differs because the icon was independently loaded.
    // So we use availableSizes, after making sure that the app and user icons do have different sizes.
    QVERIFY(userIcon.availableSizes() != appIcon.availableSizes());
    QCOMPARE(window.icon().availableSizes(), userIcon.availableSizes());
}

class DummyWindow : public QWindow
{
public:
    DummyWindow() : m_focusObject(nullptr) {}

    virtual QObject *focusObject() const override
    {
        return m_focusObject;
    }

    void setFocusObject(QObject *object)
    {
        m_focusObject = object;
        emit focusObjectChanged(object);
    }

    QObject *m_focusObject;
};


void tst_QGuiApplication::focusObject()
{
    int argc = 0;
    QGuiApplication app(argc, nullptr);

    if (!QGuiApplicationPrivate::platformIntegration()->hasCapability(QPlatformIntegration::WindowActivation))
        QSKIP("QWindow::requestActivate() is not supported.");

    QObject obj1, obj2, obj3;
    const QRect screenGeometry = QGuiApplication::primaryScreen()->availableVirtualGeometry();

    DummyWindow window1;
#if defined(Q_OS_QNX)
    window1.setSurfaceType(QSurface::OpenGLSurface);
#endif
    window1.resize(windowSize, windowSize);
    window1.setTitle(QStringLiteral("focusObject:window1"));
    window1.setFramePosition(QPoint(screenGeometry.left() + spacing, screenGeometry.top() + spacing));
    DummyWindow window2;
    window2.resize(windowSize, windowSize);
    window2.setFramePosition(QPoint(screenGeometry.left() + 2 * spacing + windowSize, screenGeometry.top() + spacing));
    window2.setTitle(QStringLiteral("focusObject:window2"));

    window1.show();

#if defined(Q_OS_QNX) // We either need to create a eglSurface or a create a backing store
                      // and then post the window in order for screen to show the window
    QOpenGLContext context;
    context.create();
    context.makeCurrent(&window1);
    QVERIFY(QTest::qWaitForWindowExposed(&window1)); // Buffer swap only succeeds with exposed window
    context.swapBuffers(&window1);
#endif

    QSignalSpy spy(&app, SIGNAL(focusObjectChanged(QObject*)));


    // verify active window focus propagates to qguiapplication
    window1.requestActivate();
    QVERIFY(QTest::qWaitForWindowActive(&window1));
    QCOMPARE(app.focusWindow(), &window1);

    window1.setFocusObject(&obj1);
    QCOMPARE(app.focusObject(), &obj1);
    QCOMPARE(spy.count(), 1);

    spy.clear();
    window1.setFocusObject(&obj2);
    QCOMPARE(app.focusObject(), &obj2);
    QCOMPARE(spy.count(), 1);

    spy.clear();
    window2.setFocusObject(&obj3);
    QCOMPARE(app.focusObject(), &obj2); // not yet changed
    window2.show();
    QVERIFY(QTest::qWaitForWindowExposed(&window2));
    QTRY_COMPARE(app.focusWindow(), &window2);
    QCOMPARE(app.focusObject(), &obj3);
    QCOMPARE(spy.count(), 1);

    // focus change on unfocused window does not show
    spy.clear();
    window1.setFocusObject(&obj1);
    QCOMPARE(spy.count(), 0);
    QCOMPARE(app.focusObject(), &obj3);
}

void tst_QGuiApplication::allWindows()
{
    int argc = 0;
    QGuiApplication app(argc, nullptr);
    QWindow *window1 = new QWindow;
    QWindow *window2 = new QWindow(window1);
    QVERIFY(app.allWindows().contains(window1));
    QVERIFY(app.allWindows().contains(window2));
    QCOMPARE(app.allWindows().count(), 2);
    delete window1;
    window1 = nullptr;
    window2 = nullptr;
    QVERIFY(!app.allWindows().contains(window2));
    QVERIFY(!app.allWindows().contains(window1));
    QCOMPARE(app.allWindows().count(), 0);
}

void tst_QGuiApplication::topLevelWindows()
{
    int argc = 0;
    QGuiApplication app(argc, nullptr);
    QWindow *window1 = new QWindow;
    QWindow *window2 = new QWindow(window1);
    QVERIFY(app.topLevelWindows().contains(window1));
    QVERIFY(!app.topLevelWindows().contains(window2));
    QCOMPARE(app.topLevelWindows().count(), 1);
    delete window1;
    window1 = nullptr;
    window2 = nullptr;
    QVERIFY(!app.topLevelWindows().contains(window2));
    QVERIFY(!app.topLevelWindows().contains(window1));
    QCOMPARE(app.topLevelWindows().count(), 0);
}

class ShowCloseShowWindow : public QWindow
{
    Q_OBJECT
public:
    ShowCloseShowWindow(bool showAgain, QWindow *parent = nullptr)
      : QWindow(parent), showAgain(showAgain)
    {
        QTimer::singleShot(0, this, SLOT(doClose()));
        QTimer::singleShot(500, this, SLOT(exitApp()));
    }

private slots:
    void doClose() {
        close();
        if (showAgain)
            show();
    }

    void exitApp() {
      qApp->exit(1);
    }

private:
    bool showAgain;
};

void tst_QGuiApplication::abortQuitOnShow()
{
    int argc = 0;
    QGuiApplication app(argc, nullptr);
    const QRect screenGeometry = QGuiApplication::primaryScreen()->availableVirtualGeometry();

    QScopedPointer<QWindow> window1(new ShowCloseShowWindow(false));
    window1->resize(windowSize, windowSize);
    window1->setFramePosition(QPoint(screenGeometry.left() + spacing, screenGeometry.top() + spacing));
    window1->setTitle(QStringLiteral("abortQuitOnShow:window1"));
    window1->show();
    QCOMPARE(app.exec(), 0);

    QScopedPointer<QWindow> window2(new ShowCloseShowWindow(true));
    window2->setTitle(QStringLiteral("abortQuitOnShow:window2"));
    window2->resize(windowSize, windowSize);
    window2->setFramePosition(QPoint(screenGeometry.left() + 2 * spacing + windowSize, screenGeometry.top() + spacing));
    window2->show();
    QCOMPARE(app.exec(), 1);
}


class FocusChangeWindow: public QWindow
{
protected:
    virtual bool event(QEvent *ev) override
    {
        if (ev->type() == QEvent::FocusAboutToChange)
            windowDuringFocusAboutToChange = qGuiApp->focusWindow();
        return QWindow::event(ev);
    }

    virtual void focusOutEvent(QFocusEvent *) override
    {
        windowDuringFocusOut = qGuiApp->focusWindow();
    }

public:
    FocusChangeWindow() : QWindow(), windowDuringFocusAboutToChange(nullptr), windowDuringFocusOut(nullptr) {}

    QWindow *windowDuringFocusAboutToChange;
    QWindow *windowDuringFocusOut;
};

void tst_QGuiApplication::changeFocusWindow()
{
    int argc = 0;
    QGuiApplication app(argc, nullptr);

    if (!QGuiApplicationPrivate::platformIntegration()->hasCapability(QPlatformIntegration::WindowActivation))
        QSKIP("QWindow::requestActivate() is not supported.");

    const QRect screenGeometry = QGuiApplication::primaryScreen()->availableVirtualGeometry();

    // focus is changed between FocusAboutToChange and FocusChanged
    FocusChangeWindow window1;
#if defined(Q_OS_QNX)
    window1.setSurfaceType(QSurface::OpenGLSurface);
#endif
    window1.resize(windowSize, windowSize);
    window1.setFramePosition(QPoint(screenGeometry.left() + spacing, screenGeometry.top() + spacing));
    window1.setTitle(QStringLiteral("changeFocusWindow:window1"));
    window1.show();
#if defined(Q_OS_QNX) // We either need to create a eglSurface or a create a backing store
                      // and then post the window in order for screen to show the window
    QOpenGLContext context;
    context.create();
    context.makeCurrent(&window1);
    QVERIFY(QTest::qWaitForWindowExposed(&window1)); // Buffer swap only succeeds with exposed window
    context.swapBuffers(&window1);
#endif
    FocusChangeWindow window2;
#if defined(Q_OS_QNX)
    window2.setSurfaceType(QSurface::OpenGLSurface);
#endif
    window2.resize(windowSize, windowSize);
    window2.setFramePosition(QPoint(screenGeometry.left() + 2 * spacing + windowSize, screenGeometry.top() + spacing));
    window2.setTitle(QStringLiteral("changeFocusWindow:window2"));
    window2.show();
#if defined(Q_OS_QNX) // We either need to create a eglSurface or a create a backing store
                      // and then post the window in order for screen to show the window
    context.makeCurrent(&window2);
    QVERIFY(QTest::qWaitForWindowExposed(&window2)); // Buffer swap only succeeds with exposed window
    context.swapBuffers(&window2);
#endif
    QVERIFY(QTest::qWaitForWindowExposed(&window1));
    QVERIFY(QTest::qWaitForWindowExposed(&window2));
    window1.requestActivate();
    QTRY_COMPARE(app.focusWindow(), &window1);

    window2.requestActivate();
    QTRY_COMPARE(app.focusWindow(), &window2);
    QCOMPARE(window1.windowDuringFocusAboutToChange, &window1);
    QCOMPARE(window1.windowDuringFocusOut, &window2);
}

void tst_QGuiApplication::keyboardModifiers()
{
    int argc = 0;
    QGuiApplication app(argc, nullptr);
    const QRect screenGeometry = QGuiApplication::primaryScreen()->availableVirtualGeometry();

    QScopedPointer<QWindow> window(new QWindow);
    window->resize(windowSize, windowSize);
    window->setFramePosition(QPoint(screenGeometry.left() + spacing, screenGeometry.top() + spacing));
    window->setTitle(QStringLiteral("keyboardModifiers"));

    window->show();
    QVERIFY(QTest::qWaitForWindowExposed(window.data()));
    QCOMPARE(QGuiApplication::keyboardModifiers(), Qt::NoModifier);

    // mouse events
    QPoint center = window->geometry().center();
    QTest::mouseEvent(QTest::MousePress, window.data(), Qt::LeftButton, Qt::NoModifier, center);
    QCOMPARE(QGuiApplication::keyboardModifiers(), Qt::NoModifier);
    QTest::mouseEvent(QTest::MouseRelease, window.data(), Qt::LeftButton, Qt::NoModifier, center);
    QCOMPARE(QGuiApplication::keyboardModifiers(), Qt::NoModifier);
    QTest::mouseEvent(QTest::MousePress, window.data(), Qt::RightButton, Qt::ControlModifier, center);
    QCOMPARE(QGuiApplication::keyboardModifiers(), Qt::ControlModifier);
    QTest::mouseEvent(QTest::MouseRelease, window.data(), Qt::RightButton, Qt::ControlModifier, center);
    QCOMPARE(QGuiApplication::keyboardModifiers(), Qt::ControlModifier);

    // shortcut events
    QTest::keyEvent(QTest::Shortcut, window.data(), Qt::Key_5, Qt::MetaModifier);
    QCOMPARE(QGuiApplication::keyboardModifiers(), Qt::MetaModifier);
    QTest::keyEvent(QTest::Shortcut, window.data(), Qt::Key_Period, Qt::NoModifier);
    QCOMPARE(QGuiApplication::keyboardModifiers(), Qt::NoModifier);
    QTest::keyEvent(QTest::Shortcut, window.data(), Qt::Key_0, Qt::ControlModifier);
    QCOMPARE(QGuiApplication::keyboardModifiers(), Qt::ControlModifier);

    // key events
    QTest::keyEvent(QTest::Press, window.data(), Qt::Key_C);
    QCOMPARE(QGuiApplication::keyboardModifiers(), Qt::NoModifier);
    QTest::keyEvent(QTest::Release, window.data(), Qt::Key_C);
    QCOMPARE(QGuiApplication::keyboardModifiers(), Qt::NoModifier);

    QTest::keyEvent(QTest::Press, window.data(), Qt::Key_U, Qt::ControlModifier);
    QCOMPARE(QGuiApplication::keyboardModifiers(), Qt::ControlModifier);
    QTest::keyEvent(QTest::Release, window.data(), Qt::Key_U, Qt::ControlModifier);
    QCOMPARE(QGuiApplication::keyboardModifiers(), Qt::ControlModifier);

    QTest::keyEvent(QTest::Press, window.data(), Qt::Key_T);
    QCOMPARE(QGuiApplication::keyboardModifiers(), Qt::NoModifier);
    QTest::keyEvent(QTest::Release, window.data(), Qt::Key_T);
    QCOMPARE(QGuiApplication::keyboardModifiers(), Qt::NoModifier);

    QTest::keyEvent(QTest::Press, window.data(), Qt::Key_E, Qt::ControlModifier);
    QCOMPARE(QGuiApplication::keyboardModifiers(), Qt::ControlModifier);
    QTest::keyEvent(QTest::Release, window.data(), Qt::Key_E, Qt::ControlModifier);
    QCOMPARE(QGuiApplication::keyboardModifiers(), Qt::ControlModifier);

    // wheel events
    QPoint global = window->mapToGlobal(center);
    QPoint delta(0, 1);
    QWindowSystemInterface::handleWheelEvent(window.data(), center, global, delta, delta, Qt::NoModifier);
    QWindowSystemInterface::sendWindowSystemEvents(QEventLoop::AllEvents);
    QCOMPARE(QGuiApplication::keyboardModifiers(), Qt::NoModifier);
    QWindowSystemInterface::handleWheelEvent(window.data(), center, global, delta, delta, Qt::AltModifier);
    QWindowSystemInterface::sendWindowSystemEvents(QEventLoop::AllEvents);
    QCOMPARE(QGuiApplication::keyboardModifiers(), Qt::AltModifier);
    QWindowSystemInterface::handleWheelEvent(window.data(), center, global, delta, delta, Qt::ControlModifier);
    QWindowSystemInterface::sendWindowSystemEvents(QEventLoop::AllEvents);
    QCOMPARE(QGuiApplication::keyboardModifiers(), Qt::ControlModifier);

    // touch events
    QPointingDevice touchDevice(QLatin1String("test touchscreen"), 0,
                                QInputDevice::DeviceType::TouchScreen, QPointingDevice::PointerType::Finger,
                                QPointingDevice::Capability::Position, 10, 0);
    QWindowSystemInterface::registerInputDevice(&touchDevice);
    QTest::touchEvent(window.data(), &touchDevice).press(1, center).release(1, center);
    QCOMPARE(QGuiApplication::keyboardModifiers(), Qt::NoModifier);

    window->close();
}

/*
    Compare actual against expected but ignore unset roles.

    Comparing palettes via operator== will compare all roles.
*/
static bool palettesMatch(const QPalette &actual, const QPalette &expected)
{
    if (actual.resolveMask() != expected.resolveMask())
        return false;

    for (int i = 0; i < QPalette::NColorGroups; i++) {
        for (int j = 0; j < QPalette::NColorRoles; j++) {
            const auto g = QPalette::ColorGroup(i);
            const auto r = QPalette::ColorRole(j);
            if (expected.isBrushSet(g, r)) {
                if (actual.brush(g, r) != expected.brush(g, r))
                    return false;
            }
        }
    }
    return true;
}

void tst_QGuiApplication::palette()
{
    // Getting the palette before application construction should work
    QPalette paletteBeforeAppConstruction = QGuiApplication::palette();
    // And should be reflected in the default constructed palette
    QCOMPARE(paletteBeforeAppConstruction, QPalette());

    int argc = 1;
    char *argv[] = { const_cast<char*>("tst_qguiapplication") };
    QGuiApplication app(argc, argv);

    // The same should be true after application construction
    QCOMPARE(QGuiApplication::palette(), QPalette());

    // The default application palette is not resolved
    QVERIFY(!QGuiApplication::palette().resolveMask());

    QSignalSpy signalSpy(&app, SIGNAL(paletteChanged(QPalette)));

    QPalette oldPalette = QGuiApplication::palette();
    QPalette newPalette = QPalette(Qt::red);

    QGuiApplication::setPalette(newPalette);
    QVERIFY(palettesMatch(QGuiApplication::palette(), newPalette));
    QCOMPARE(signalSpy.count(), 1);
    QVERIFY(palettesMatch(signalSpy.at(0).at(0).value<QPalette>(), newPalette));
    QCOMPARE(QGuiApplication::palette(), QPalette());

    QGuiApplication::setPalette(oldPalette);
    QVERIFY(palettesMatch(QGuiApplication::palette(), oldPalette));
    QCOMPARE(signalSpy.count(), 2);
    QVERIFY(palettesMatch(signalSpy.at(1).at(0).value<QPalette>(), oldPalette));
    QCOMPARE(QGuiApplication::palette(), QPalette());

    QGuiApplication::setPalette(oldPalette);
    QVERIFY(palettesMatch(QGuiApplication::palette(), oldPalette));
    QCOMPARE(signalSpy.count(), 2);
    QCOMPARE(QGuiApplication::palette(), QPalette());
}

void tst_QGuiApplication::font()
{
    int argc = 1;
    char *argv[] = { const_cast<char*>("tst_qguiapplication") };
    QGuiApplication app(argc, argv);
    QSignalSpy signalSpy(&app, SIGNAL(fontChanged(QFont)));

    QFont oldFont = QGuiApplication::font();
    QFont newFont = QFont("BogusFont", 33);

    QGuiApplication::setFont(newFont);
    QCOMPARE(QGuiApplication::font(), newFont);
    QCOMPARE(signalSpy.count(), 1);
    QCOMPARE(signalSpy.at(0).at(0), QVariant(newFont));

    QGuiApplication::setFont(oldFont);
    QCOMPARE(QGuiApplication::font(), oldFont);
    QCOMPARE(signalSpy.count(), 2);
    QCOMPARE(signalSpy.at(1).at(0), QVariant(oldFont));

    QGuiApplication::setFont(oldFont);
    QCOMPARE(QGuiApplication::font(), oldFont);
    QCOMPARE(signalSpy.count(), 2);
}

class BlockableWindow : public QWindow
{
    Q_OBJECT
public:
    int blocked;
    int leaves;
    int enters;

    inline explicit BlockableWindow(QWindow *parent = nullptr)
        : QWindow(parent), blocked(false), leaves(0), enters(0) {}

    bool event(QEvent *e) override
    {
        switch (e->type()) {
        case QEvent::WindowBlocked:
            ++blocked;
            break;
        case QEvent::WindowUnblocked:
            --blocked;
            break;
        case QEvent::Leave:
            leaves++;
            break;
        case QEvent::Enter:
            enters++;
            break;
        default:
            break;
        }
        return QWindow::event(e);
    }

    void resetCounts()
    {
        leaves = 0;
        enters = 0;
    }
};

void tst_QGuiApplication::modalWindow()
{
    int argc = 0;
    QGuiApplication app(argc, nullptr);
    const QRect screenGeometry = QGuiApplication::primaryScreen()->availableVirtualGeometry();

    int x = screenGeometry.left() + spacing;
    int y = screenGeometry.top() + spacing;

    QScopedPointer<BlockableWindow> window1(new BlockableWindow);
    window1->setTitle(QStringLiteral("window1"));
    window1->resize(windowSize, windowSize);
    window1->setFramePosition(QPoint(x, y));
    BlockableWindow *childWindow1 = new BlockableWindow(window1.data());
    childWindow1->resize(windowSize / 2, windowSize / 2);
    x += spacing + windowSize;

    QScopedPointer<BlockableWindow> window2(new BlockableWindow);
    window2->setTitle(QStringLiteral("window2"));
    window2->setFlags(window2->flags() & Qt::Tool); // QTBUG-32433, don't be fooled by unusual window flags.
    window2->resize(windowSize, windowSize);
    window2->setFramePosition(QPoint(x, y));
    x += spacing + windowSize;

    QScopedPointer<BlockableWindow> windowModalWindow1(new BlockableWindow);
    windowModalWindow1->setTitle(QStringLiteral("windowModalWindow1"));
    windowModalWindow1->setTransientParent(window1.data());
    windowModalWindow1->setModality(Qt::WindowModal);
    windowModalWindow1->resize(windowSize, windowSize);
    windowModalWindow1->setFramePosition(QPoint(x, y));
    x += spacing + windowSize;

    QScopedPointer<BlockableWindow> windowModalWindow2(new BlockableWindow);
    windowModalWindow2->setTitle(QStringLiteral("windowModalWindow2"));
    windowModalWindow2->setTransientParent(windowModalWindow1.data());
    windowModalWindow2->setModality(Qt::WindowModal);
    windowModalWindow2->resize(windowSize, windowSize);
    windowModalWindow2->setFramePosition(QPoint(x, y));
    x = screenGeometry.left() + spacing;
    y += spacing + windowSize;

    QScopedPointer<BlockableWindow> applicationModalWindow1(new BlockableWindow);
    applicationModalWindow1->setTitle(QStringLiteral("applicationModalWindow1"));
    applicationModalWindow1->setModality(Qt::ApplicationModal);
    applicationModalWindow1->resize(windowSize, windowSize);
    applicationModalWindow1->setFramePosition(QPoint(x, y));

#ifndef QT_NO_CURSOR // Get the mouse cursor out of the way since we are manually sending enter/leave.
    QCursor::setPos(QPoint(x + 2 * spacing + windowSize, y));
#endif

    // show the 2 windows, nothing is blocked
    window1->show();
    window2->show();
    QVERIFY(QTest::qWaitForWindowExposed(window1.data()));
    QVERIFY(QTest::qWaitForWindowExposed(window2.data()));
    QCOMPARE(app.modalWindow(), static_cast<QWindow *>(nullptr));
    QCOMPARE(window1->blocked, 0);
    QCOMPARE(childWindow1->blocked, 0);
    QCOMPARE(window2->blocked, 0);
    QCOMPARE(windowModalWindow1->blocked, 0);
    QCOMPARE(windowModalWindow2->blocked, 0);
    QCOMPARE(applicationModalWindow1->blocked, 0);

    // enter mouse in window1
    QWindowSystemInterface::handleEnterEvent(window1.data());
    QGuiApplication::processEvents();
    QCOMPARE(window1->enters, 1);
    QCOMPARE(window1->leaves, 0);

    // show applicationModalWindow1, everything is blocked
    applicationModalWindow1->show();
    QCOMPARE(app.modalWindow(), applicationModalWindow1.data());
    QCOMPARE(window1->blocked, 1);
    QCOMPARE(childWindow1->blocked, 1); // QTBUG-32242, blocked status needs to be set on children as well.
    QCOMPARE(window2->blocked, 1);
    QCOMPARE(windowModalWindow1->blocked, 1);
    QCOMPARE(windowModalWindow2->blocked, 1);
    QCOMPARE(applicationModalWindow1->blocked, 0);

    // opening modal causes leave for previously entered window, but not others
    QGuiApplication::processEvents();
    QCOMPARE(window1->enters, 1);
    QCOMPARE(window1->leaves, 1);
    QCOMPARE(window2->enters, 0);
    QCOMPARE(window2->leaves, 0);
    QCOMPARE(applicationModalWindow1->enters, 0);
    QCOMPARE(applicationModalWindow1->leaves, 0);
    window1->resetCounts();

    // Try entering/leaving blocked window2 - no events should reach it
    QWindowSystemInterface::handleEnterEvent(window2.data());
    QGuiApplication::processEvents();
    QWindowSystemInterface::handleLeaveEvent(window2.data());
    QGuiApplication::processEvents();
    QCOMPARE(window2->enters, 0);
    QCOMPARE(window2->leaves, 0);

    // everything is unblocked when applicationModalWindow1 is hidden
    applicationModalWindow1->hide();
    QCOMPARE(app.modalWindow(), static_cast<QWindow *>(nullptr));
    QCOMPARE(window1->blocked, 0);
    QCOMPARE(childWindow1->blocked, 0); // QTBUG-32242, blocked status needs to be set on children as well.
    QCOMPARE(window2->blocked, 0);
    QCOMPARE(windowModalWindow1->blocked, 0);
    QCOMPARE(windowModalWindow2->blocked, 0);
    QCOMPARE(applicationModalWindow1->blocked, 0);

    // Enter window2 - should not be blocked
    QWindowSystemInterface::handleEnterEvent(window2.data());
    QGuiApplication::processEvents();
    QCOMPARE(window2->enters, 1);
    QCOMPARE(window2->leaves, 0);

    // show the windowModalWindow1, only window1 is blocked
    windowModalWindow1->show();
    QCOMPARE(app.modalWindow(), windowModalWindow1.data());
    QCOMPARE(window1->blocked, 1);
    QCOMPARE(window2->blocked, 0);
    QCOMPARE(windowModalWindow1->blocked, 0);
    QCOMPARE(windowModalWindow2->blocked, 0);
    QCOMPARE(applicationModalWindow1->blocked, 0);

    // opening window modal window doesn't cause leave for unblocked window
    QGuiApplication::processEvents();
    QCOMPARE(window1->enters, 0);
    QCOMPARE(window1->leaves, 0);
    QCOMPARE(window2->enters, 1);
    QCOMPARE(window2->leaves, 0);
    QCOMPARE(windowModalWindow1->enters, 0);
    QCOMPARE(windowModalWindow1->leaves, 0);

    // show the windowModalWindow2, windowModalWindow1 is blocked as well
    windowModalWindow2->show();
    QCOMPARE(app.modalWindow(), windowModalWindow2.data());
    QCOMPARE(window1->blocked, 1);
    QCOMPARE(window2->blocked, 0);
    QCOMPARE(windowModalWindow1->blocked, 1);
    QCOMPARE(windowModalWindow2->blocked, 0);
    QCOMPARE(applicationModalWindow1->blocked, 0);

    // hide windowModalWindow1, nothing is unblocked
    windowModalWindow1->hide();
    QCOMPARE(app.modalWindow(), windowModalWindow2.data());
    QCOMPARE(window1->blocked, 1);
    QCOMPARE(window2->blocked, 0);
    QCOMPARE(windowModalWindow1->blocked, 1);
    QCOMPARE(windowModalWindow2->blocked, 0);
    QCOMPARE(applicationModalWindow1->blocked, 0);

    // hide windowModalWindow2, windowModalWindow1 and window1 are unblocked
    windowModalWindow2->hide();
    QCOMPARE(app.modalWindow(), static_cast<QWindow *>(nullptr));
    QCOMPARE(window1->blocked, 0);
    QCOMPARE(window2->blocked, 0);
    QCOMPARE(windowModalWindow1->blocked, 0);
    QCOMPARE(windowModalWindow2->blocked, 0);
    QCOMPARE(applicationModalWindow1->blocked, 0);

    // show windowModalWindow1 again, window1 is blocked
    windowModalWindow1->show();
    QCOMPARE(app.modalWindow(), windowModalWindow1.data());
    QCOMPARE(window1->blocked, 1);
    QCOMPARE(window2->blocked, 0);
    QCOMPARE(windowModalWindow1->blocked, 0);
    QCOMPARE(windowModalWindow2->blocked, 0);
    QCOMPARE(applicationModalWindow1->blocked, 0);

    // show windowModalWindow2 again, windowModalWindow1 is also blocked
    windowModalWindow2->show();
    QCOMPARE(app.modalWindow(), windowModalWindow2.data());
    QCOMPARE(window1->blocked, 1);
    QCOMPARE(window2->blocked, 0);
    QCOMPARE(windowModalWindow1->blocked, 1);
    QCOMPARE(windowModalWindow2->blocked, 0);
    QCOMPARE(applicationModalWindow1->blocked, 0);

    // show applicationModalWindow1, everything is blocked
    applicationModalWindow1->show();
    QCOMPARE(app.modalWindow(), applicationModalWindow1.data());
    QCOMPARE(window1->blocked, 1);
    QCOMPARE(window2->blocked, 1);
    QCOMPARE(windowModalWindow1->blocked, 1);
    QCOMPARE(windowModalWindow2->blocked, 1);
    QCOMPARE(applicationModalWindow1->blocked, 0);

    // window2 gets finally the leave
    QGuiApplication::processEvents();
    QCOMPARE(window1->enters, 0);
    QCOMPARE(window1->leaves, 0);
    QCOMPARE(window2->enters, 1);
    QCOMPARE(window2->leaves, 1);
    QCOMPARE(windowModalWindow1->enters, 0);
    QCOMPARE(windowModalWindow1->leaves, 0);
    QCOMPARE(applicationModalWindow1->enters, 0);
    QCOMPARE(applicationModalWindow1->leaves, 0);

    // hide applicationModalWindow1, windowModalWindow1 and window1 are blocked
    applicationModalWindow1->hide();
    QCOMPARE(app.modalWindow(), windowModalWindow2.data());
    QCOMPARE(window1->blocked, 1);
    QCOMPARE(window2->blocked, 0);
    QCOMPARE(windowModalWindow1->blocked, 1);
    QCOMPARE(windowModalWindow2->blocked, 0);
    QCOMPARE(applicationModalWindow1->blocked, 0);

    // hide windowModalWindow2, window1 is blocked
    windowModalWindow2->hide();
    QCOMPARE(app.modalWindow(), windowModalWindow1.data());
    QCOMPARE(window1->blocked, 1);
    QCOMPARE(window2->blocked, 0);
    QCOMPARE(windowModalWindow1->blocked, 0);
    QCOMPARE(windowModalWindow2->blocked, 0);
    QCOMPARE(applicationModalWindow1->blocked, 0);

    // hide windowModalWindow1, everything is unblocked
    windowModalWindow1->hide();
    QCOMPARE(app.modalWindow(), static_cast<QWindow *>(nullptr));
    QCOMPARE(window1->blocked, 0);
    QCOMPARE(window2->blocked, 0);
    QCOMPARE(windowModalWindow1->blocked, 0);
    QCOMPARE(windowModalWindow2->blocked, 0);
    QCOMPARE(applicationModalWindow1->blocked, 0);

    window2->hide();
    window1->hide();
}

void tst_QGuiApplication::quitOnLastWindowClosed()
{
    int argc = 0;
    QGuiApplication app(argc, nullptr);
    const QRect screenGeometry = QGuiApplication::primaryScreen()->availableVirtualGeometry();

    QTimer timer;
    timer.setInterval(100);

    QSignalSpy spyAboutToQuit(&app, &QCoreApplication::aboutToQuit);
    QSignalSpy spyTimeout(&timer, &QTimer::timeout);

    QWindow mainWindow;
    mainWindow.setTitle(QStringLiteral("quitOnLastWindowClosedMainWindow"));
    mainWindow.resize(windowSize, windowSize);
    mainWindow.setFramePosition(QPoint(screenGeometry.left() + spacing, screenGeometry.top() + spacing));

    QWindow dialog;
    dialog.setTransientParent(&mainWindow);
    dialog.setTitle(QStringLiteral("quitOnLastWindowClosedDialog"));
    dialog.resize(windowSize, windowSize);
    dialog.setFramePosition(QPoint(screenGeometry.left() + 2 * spacing + windowSize, screenGeometry.top() + spacing));

    QVERIFY(app.quitOnLastWindowClosed());

    mainWindow.show();
    dialog.show();
    QVERIFY(QTest::qWaitForWindowExposed(&dialog));

    timer.start();
    QTimer::singleShot(1000, &mainWindow, &QWindow::close); // This should quit the application
    QTimer::singleShot(2000, &app, QCoreApplication::quit);  // This makes sure we quit even if it didn't

    app.exec();

    QCOMPARE(spyAboutToQuit.count(), 1);
    // Should be around 10 if closing caused the quit
    QVERIFY2(spyTimeout.count() < 15, QByteArray::number(spyTimeout.count()).constData());
}

void tst_QGuiApplication::quitOnLastWindowClosedMulti()
{
    int argc = 0;
    QGuiApplication app(argc, nullptr);
    const QRect screenGeometry = QGuiApplication::primaryScreen()->availableVirtualGeometry();

    QTimer timer;
    timer.setInterval(100);

    QSignalSpy spyAboutToQuit(&app, &QCoreApplication::aboutToQuit);
    QSignalSpy spyTimeout(&timer, &QTimer::timeout);

    QWindow mainWindow;
    mainWindow.setTitle(QStringLiteral("quitOnLastWindowClosedMultiMainWindow"));
    mainWindow.resize(windowSize, windowSize);
    mainWindow.setFramePosition(QPoint(screenGeometry.left() + spacing, screenGeometry.top() + spacing));

    QWindow dialog;
    dialog.setTitle(QStringLiteral("quitOnLastWindowClosedMultiDialog"));
    dialog.resize(windowSize, windowSize);
    dialog.setFramePosition(QPoint(screenGeometry.left() + 2 * spacing + windowSize, screenGeometry.top() + spacing));

    QVERIFY(!dialog.transientParent());
    QVERIFY(app.quitOnLastWindowClosed());

    mainWindow.show();
    dialog.show();
    QVERIFY(QTest::qWaitForWindowExposed(&dialog));

    timer.start();
    QTimer::singleShot(1000, &mainWindow, &QWindow::close); // This should not quit the application
    QTimer::singleShot(2000, &app, &QCoreApplication::quit);

    app.exec();

    QCOMPARE(spyAboutToQuit.count(), 1);
    // Should be around 20 if closing did not cause the quit
    QVERIFY2(spyTimeout.count() > 15, QByteArray::number(spyTimeout.count()).constData());
}

void tst_QGuiApplication::dontQuitOnLastWindowClosed()
{
    int argc = 0;
    QGuiApplication app(argc, nullptr);
    app.setQuitOnLastWindowClosed(false);

    QTimer timer;
    timer.setInterval(2000);
    timer.setSingleShot(true);
    QObject::connect(&timer, &QTimer::timeout, &app, &QCoreApplication::quit);

    QSignalSpy spyLastWindowClosed(&app, &QGuiApplication::lastWindowClosed);
    QSignalSpy spyTimeout(&timer, &QTimer::timeout);

    QScopedPointer<QWindow> mainWindow(new QWindow);

    mainWindow->show();

    QTimer::singleShot(1000, mainWindow.data(), &QWindow::close); // This should not quit the application
    timer.start();

    app.exec();

    app.setQuitOnLastWindowClosed(true); // restore underlying static to default value

    QCOMPARE(spyTimeout.count(), 1); // quit timer fired
    QCOMPARE(spyLastWindowClosed.count(), 1); // lastWindowClosed emitted
}

static Qt::ScreenOrientation testOrientationToSend = Qt::PrimaryOrientation;

class TestPlugin : public QObject
{
    Q_OBJECT
public:
    TestPlugin()
    {
        QScreen* screen = QGuiApplication::primaryScreen();
        QWindowSystemInterface::handleScreenOrientationChange(screen, testOrientationToSend);
    }
};

class TestPluginFactory : public QGenericPlugin
{
    Q_OBJECT
    Q_PLUGIN_METADATA(IID "org.qt-project.Qt.QGenericPluginFactoryInterface" FILE "testplugin.json")
public:
    QObject* create(const QString &key, const QString &) override
    {
        if (key == "testplugin")
            return new TestPlugin;
        return nullptr;
    }
};

class TestEventReceiver : public QObject
{
    Q_OBJECT
public:
    int customEvents;

    TestEventReceiver()
        : customEvents(0)
    {}

    virtual void customEvent(QEvent *) override
    {
        customEvents++;
    }
};

#include "tst_qguiapplication.moc"

void tst_QGuiApplication::genericPluginsAndWindowSystemEvents()
{
    testOrientationToSend = Qt::InvertedLandscapeOrientation;

    TestEventReceiver testReceiver;
    QCoreApplication::postEvent(&testReceiver, new QEvent(QEvent::User));
    QCOMPARE(testReceiver.customEvents, 0);

#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
    QStaticPlugin testPluginInfo(qt_plugin_instance, qt_plugin_query_metadata);
#else
    QStaticPlugin testPluginInfo;
    testPluginInfo.instance = qt_plugin_instance;
    testPluginInfo.rawMetaData = qt_plugin_query_metadata;
#endif
    qRegisterStaticPluginFunction(testPluginInfo);
    int argc = 3;
    char *argv[] = { const_cast<char*>(QTest::currentAppName()), const_cast<char*>("-plugin"), const_cast<char*>("testplugin") };
    QGuiApplication app(argc, argv);

    QVERIFY(QGuiApplication::primaryScreen());
    QCOMPARE(QGuiApplication::primaryScreen()->orientation(), testOrientationToSend);

    QCOMPARE(testReceiver.customEvents, 0);
    QCoreApplication::sendPostedEvents(&testReceiver);
    QCOMPARE(testReceiver.customEvents, 1);
}

Q_DECLARE_METATYPE(Qt::LayoutDirection)
void tst_QGuiApplication::layoutDirection()
{
    qRegisterMetaType<Qt::LayoutDirection>();

    Qt::LayoutDirection oldDirection = QGuiApplication::layoutDirection();
    Qt::LayoutDirection newDirection = oldDirection == Qt::LeftToRight ? Qt::RightToLeft : Qt::LeftToRight;

    QGuiApplication::setLayoutDirection(newDirection);
    QCOMPARE(QGuiApplication::layoutDirection(), newDirection);

    int argc = 1;
    char *argv[] = { const_cast<char*>("tst_qguiapplication") };
    QGuiApplication app(argc, argv);
    QSignalSpy signalSpy(&app, SIGNAL(layoutDirectionChanged(Qt::LayoutDirection)));

    QGuiApplication::setLayoutDirection(oldDirection);
    QCOMPARE(QGuiApplication::layoutDirection(), oldDirection);
    QCOMPARE(signalSpy.count(), 1);
    QCOMPARE(signalSpy.at(0).at(0).toInt(), static_cast<int>(oldDirection));

    QGuiApplication::setLayoutDirection(oldDirection);
    QCOMPARE(QGuiApplication::layoutDirection(), oldDirection);
    QCOMPARE(signalSpy.count(), 1);
}

void tst_QGuiApplication::globalShareContext()
{
#ifndef QT_NO_OPENGL
    // Test that there is a global share context when requested.
    QCoreApplication::setAttribute(Qt::AA_ShareOpenGLContexts);
    int argc = 1;
    char *argv[] = { const_cast<char*>("tst_qguiapplication") };
    QScopedPointer<QGuiApplication> app(new QGuiApplication(argc, argv));
    QOpenGLContext *ctx = qt_gl_global_share_context();
    QVERIFY(ctx);
    app.reset();
    ctx = qt_gl_global_share_context();
    QVERIFY(!ctx);

    // Test that there is no global share context by default.
    QCoreApplication::setAttribute(Qt::AA_ShareOpenGLContexts, false);
    app.reset(new QGuiApplication(argc, argv));
    ctx = qt_gl_global_share_context();
    QVERIFY(!ctx);
#else
    QSKIP("No OpenGL support");
#endif
}

void tst_QGuiApplication::testSetPaletteAttribute()
{
    QCoreApplication::setAttribute(Qt::AA_SetPalette, false);
    int argc = 1;
    char *argv[] = { const_cast<char*>("tst_qguiapplication") };

    QGuiApplication app(argc, argv);

    QVERIFY(!QCoreApplication::testAttribute(Qt::AA_SetPalette));
    QPalette palette;
    palette.setColor(QPalette::WindowText, Qt::red);
    QGuiApplication::setPalette(palette);

    QVERIFY(QCoreApplication::testAttribute(Qt::AA_SetPalette));

    QGuiApplication::setPalette(QPalette());
    QVERIFY(!QCoreApplication::testAttribute(Qt::AA_SetPalette));
}

// Test that static functions do not crash if there is no application instance.
void tst_QGuiApplication::staticFunctions()
{
    QGuiApplication::setApplicationDisplayName(QString());
    QGuiApplication::applicationDisplayName();
    QGuiApplication::allWindows();
    QGuiApplication::topLevelWindows();
    QGuiApplication::topLevelAt(QPoint(0, 0));
    QGuiApplication::setWindowIcon(QIcon());
    QGuiApplication::windowIcon();
    QGuiApplication::platformName();
    QGuiApplication::modalWindow();
    QGuiApplication::focusWindow();
    QGuiApplication::focusObject();
    QGuiApplication::primaryScreen();
    QGuiApplication::screens();
    QGuiApplication::overrideCursor();
    QGuiApplication::setOverrideCursor(QCursor());
    QGuiApplication::changeOverrideCursor(QCursor());
    QGuiApplication::restoreOverrideCursor();
    QGuiApplication::keyboardModifiers();
    QGuiApplication::queryKeyboardModifiers();
    QGuiApplication::mouseButtons();
    QGuiApplication::setLayoutDirection(Qt::LeftToRight);
    QGuiApplication::layoutDirection();
    QGuiApplication::styleHints();
    QGuiApplication::setDesktopSettingsAware(true);
    QGuiApplication::desktopSettingsAware();
    QGuiApplication::inputMethod();
    QGuiApplication::platformNativeInterface();
    QGuiApplication::platformFunction(QByteArrayLiteral("bla"));
    QGuiApplication::setQuitOnLastWindowClosed(true);
    QGuiApplication::quitOnLastWindowClosed();
    QGuiApplication::applicationState();

    QPixmap::defaultDepth();
}

void tst_QGuiApplication::settableStyleHints_data()
{
    QTest::addColumn<bool>("appInstance");
    QTest::newRow("app") << true;
    QTest::newRow("no-app") << false;
}

void tst_QGuiApplication::settableStyleHints()
{
    QFETCH(bool, appInstance);
    int argc = 0;
    QScopedPointer<QGuiApplication> app;
    if (appInstance)
        app.reset(new QGuiApplication(argc, nullptr));

    const int keyboardInputInterval = 555;
    QGuiApplication::styleHints()->setKeyboardInputInterval(keyboardInputInterval);
    QCOMPARE(QGuiApplication::styleHints()->keyboardInputInterval(), keyboardInputInterval);
}

QTEST_APPLESS_MAIN(tst_QGuiApplication)
