index : Qt.git	QT_5_12_3 QT_5_13_1 QT_5_13_2 QT_5_14 master
	Qt s a cross-platform application framework that is used for developing application software that can be run on various software and hardware platforms with little or no change in the underlying codebase, while still being a native application with native capabilities and speed.

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path: root/tests/auto/qtranslator/qtranslator.pro

	Commit message (Expand)	Author	Age	Files	Lines
*	fix deployment rules	Maurice Kalinowski	2009-04-14	1	-1/+1
*	Long live Qt 4.5!	Lars Knoll	2009-03-23	1	-0/+11

generated by cgit v0.12 at 2024-12-29 06:15:45 (GMT)

/****************************************************************************
**
** Copyright (C) 2009 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.
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** $QT_END_LICENSE$
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****************************************************************************/


#include <QtTest/QtTest>
#include <qlayout.h>
#include "qstyle.h"
#include <qevent.h>
#include <qpainter.h>
#include <qpixmap.h>
#include <qapplication.h>
#include <qwidget.h>
#include <qlabel.h>
#include <qstyleoption.h>
#include <qscrollbar.h>
#include <qprogressbar.h>

#include <qplastiquestyle.h>
#include <qwindowsstyle.h>
#include <qcdestyle.h>
#include <qmotifstyle.h>
#include <qcommonstyle.h>
#include <qproxystyle.h>
#include <qstylefactory.h>

#include <qimagereader.h>
#include <qimagewriter.h>
#include <qmenu.h>
#include <qpushbutton.h>
#include <qspinbox.h>
#include <qcombobox.h>
#include <qradiobutton.h>
#include <qlineedit.h>
#include <qmdiarea.h>

#if defined(Q_OS_SYMBIAN)
#define SRCDIR "."
#endif

#include <QCleanlooksStyle>

#ifdef Q_WS_MAC
#include <QMacStyle>
#endif

#ifdef Q_WS_WIN
#include <QWindowsXPStyle>
#include <QWindowsVistaStyle>
#endif

#ifdef Q_OS_WINCE
#include <QWindowsCEStyle>
#endif

#ifdef Q_OS_WINCE_WM
#include <QWindowsMobileStyle>
#include <windows.h>

static bool qt_wince_is_smartphone() {
    wchar_t tszPlatform[64];
    if (SystemParametersInfo(SPI_GETPLATFORMTYPE,
                             sizeof(tszPlatform)/sizeof(*tszPlatform),tszPlatform,0))
      if (0 == _tcsicmp(reinterpret_cast<const wchar_t *> (QString::fromLatin1("Smartphone").utf16()), tszPlatform))
            return true;
    return false;
}
#endif

#ifdef Q_WS_S60
#include <qs60style.h>
#endif

#include <qwidget.h>

//TESTED_CLASS=
//TESTED_FILES=gui/styles/qstyle.h gui/styles/qstyle.cpp gui/styles/qplastiquestyle.cpp gui/styles/qwindowsstyle.cpp gui/styles/qwindowsxpstyle.cpp gui/styles/qwindowsvistastyle.cpp gui/styles/qmotifstyle.cpp gui/styles/qs60style.cpp

class tst_QStyle : public QObject
{
    Q_OBJECT
public:
    tst_QStyle();
    virtual ~tst_QStyle();
private:
    void testAllFunctions(QStyle *);
    void testScrollBarSubControls(QStyle *);
    void testPainting(QStyle *style, const QString &platform);
private slots:
    void drawItemPixmap();
    void initTestCase();
    void cleanupTestCase();
    void init();
    void cleanup();
    void testMotifStyle();
    void testPlastiqueStyle();
    void testWindowsStyle();
    void testCDEStyle();
    void testWindowsXPStyle();
    void testWindowsVistaStyle();
    void testCleanlooksStyle();
    void testMacStyle();
    void testWindowsCEStyle();
    void testWindowsMobileStyle();
    void testS60Style();
    void testStyleFactory();
    void testProxyStyle();
    void pixelMetric();
    void progressBarChangeStyle();
    void defaultFont();
private:
    void lineUpLayoutTest(QStyle *);
    QWidget *testWidget;
};


tst_QStyle::tst_QStyle()
{
    testWidget = 0;
}

tst_QStyle::~tst_QStyle()
{
}

class MyWidget : public QWidget
{
public:
    MyWidget( QWidget* QWidget=0, const char* name=0 );
protected:
    void paintEvent( QPaintEvent* );
};

void tst_QStyle::init()
{
    testWidget = new MyWidget( 0, "testObject");
}

void tst_QStyle::cleanup()
{
    delete testWidget;
    testWidget = 0;
}

void tst_QStyle::initTestCase()
{
}

void tst_QStyle::cleanupTestCase()
{
}

void tst_QStyle::testStyleFactory()
{
    QStringList keys = QStyleFactory::keys();
#ifndef QT_NO_STYLE_MOTIF
    QVERIFY(keys.contains("Motif"));
#endif
#ifndef QT_NO_STYLE_CLEANLOOKS
    QVERIFY(keys.contains("Cleanlooks"));
#endif
#ifndef QT_NO_STYLE_PLASTIQUE
    QVERIFY(keys.contains("Plastique"));
#endif
#ifndef QT_NO_STYLE_CDE
    QVERIFY(keys.contains("CDE"));
#endif
#ifndef QT_NO_STYLE_WINDOWS
    QVERIFY(keys.contains("Windows"));
#endif
#ifndef QT_NO_STYLE_MOTIF
    QVERIFY(keys.contains("Motif"));
#endif
#ifdef Q_WS_WIN
    if (QSysInfo::WindowsVersion >= QSysInfo::WV_XP &&
        QSysInfo::WindowsVersion < QSysInfo::WV_NT_based)
        QVERIFY(keys.contains("WindowsXP"));
    if (QSysInfo::WindowsVersion >= QSysInfo::WV_VISTA &&
        QSysInfo::WindowsVersion < QSysInfo::WV_NT_based)
        QVERIFY(keys.contains("WindowsVista"));
#endif

    foreach (QString styleName , keys) {
        QStyle *style = QStyleFactory::create(styleName);
        QVERIFY2(style != 0, qPrintable(QString::fromLatin1("Fail to load style '%1'").arg(styleName)));
        delete style;
    }
}

class CustomProxy : public QProxyStyle
{
    virtual int pixelMetric(PixelMetric metric, const QStyleOption *option = 0,
                            const QWidget *widget = 0) const
    {
        if (metric == QStyle::PM_ButtonIconSize)
            return 13;
        return QProxyStyle::pixelMetric(metric, option, widget);
    }
};

void tst_QStyle::testProxyStyle()
{
    QProxyStyle *proxyStyle = new QProxyStyle();
    QVERIFY(proxyStyle->baseStyle());
    QStyle *style = new QWindowsStyle;
    QVERIFY(style->proxy() == style);

    proxyStyle->setBaseStyle(style);
    QVERIFY(style->proxy() == proxyStyle);
    QVERIFY(style->parent() == proxyStyle);
    QVERIFY(proxyStyle->baseStyle() == style);

    testAllFunctions(proxyStyle);
    proxyStyle->setBaseStyle(0);
    QVERIFY(proxyStyle->baseStyle());
    qApp->setStyle(proxyStyle);

    QProxyStyle doubleProxy(new QProxyStyle(new QWindowsStyle()));
    testAllFunctions(&doubleProxy);

    CustomProxy customStyle;
    QLineEdit edit;
    edit.setStyle(&customStyle);
    QVERIFY(!customStyle.parent());
    QVERIFY(edit.style()->pixelMetric(QStyle::PM_ButtonIconSize) == 13);
}

void tst_QStyle::drawItemPixmap()
{
    testWidget->resize(300, 300);
    testWidget->show();

    QPixmap p(QString(SRCDIR) + "/task_25863.png", "PNG");
    QPixmap actualPix = QPixmap::grabWidget(testWidget);
    QVERIFY(pixmapsAreEqual(&actualPix,&p));
    testWidget->hide();
}

void tst_QStyle::testAllFunctions(QStyle *style)
{
    QStyleOption opt;
    opt.init(testWidget);

    testWidget->setStyle(style);

    //Tests styleHint with default arguments for potential crashes
    for ( int hint = 0 ; hint < int(QStyle::SH_Menu_Mask); ++hint) {
        style->styleHint(QStyle::StyleHint(hint));
        style->styleHint(QStyle::StyleHint(hint), &opt, testWidget);
    }

    //Tests pixelMetric with default arguments for potential crashes
    for ( int pm = 0 ; pm < int(QStyle::PM_LayoutVerticalSpacing); ++pm) {
        style->pixelMetric(QStyle::PixelMetric(pm));
        style->pixelMetric(QStyle::PixelMetric(pm), &opt, testWidget);
    }

    //Tests drawControl with default arguments for potential crashes
    for ( int control = 0 ; control < int(QStyle::CE_ColumnViewGrip); ++control) {
        QPixmap surface(QSize(200, 200));
        QPainter painter(&surface);
        style->drawControl(QStyle::ControlElement(control), &opt, &painter, 0);
    }

    //Tests drawComplexControl with default arguments for potential crashes
    {
        QPixmap surface(QSize(200, 200));
        QPainter painter(&surface);
        QStyleOptionComboBox copt1;
        copt1.init(testWidget);

        QStyleOptionGroupBox copt2;
        copt2.init(testWidget);
        QStyleOptionSizeGrip copt3;
        copt3.init(testWidget);
        QStyleOptionSlider copt4;
        copt4.init(testWidget);
        copt4.minimum = 0;
        copt4.maximum = 100;
        copt4.tickInterval = 25;
        copt4.sliderValue = 50;
        QStyleOptionSpinBox copt5;
        copt5.init(testWidget);
        QStyleOptionTitleBar copt6;
        copt6.init(testWidget);
        QStyleOptionToolButton copt7;
        copt7.init(testWidget);
        QStyleOptionQ3ListView copt8;
        copt8.init(testWidget);
        copt8.items << QStyleOptionQ3ListViewItem();
        QStyleOptionComplex copt9;
        copt9.initFrom(testWidget);

        style->drawComplexControl(QStyle::CC_SpinBox, &copt5, &painter, 0);
        style->drawComplexControl(QStyle::CC_ComboBox, &copt1, &painter, 0);
        style->drawComplexControl(QStyle::CC_ScrollBar, &copt4, &painter, 0);
        style->drawComplexControl(QStyle::CC_Slider, &copt4, &painter, 0);
        style->drawComplexControl(QStyle::CC_ToolButton, &copt7, &painter, 0);
        style->drawComplexControl(QStyle::CC_TitleBar, &copt6, &painter, 0);
        style->drawComplexControl(QStyle::CC_GroupBox, &copt2, &painter, 0);
        style->drawComplexControl(QStyle::CC_Dial, &copt4, &painter, 0);
#ifdef QT3_SUPPORT
        style->drawComplexControl(QStyle::CC_Q3ListView, &copt8, &painter, 0);
        style->drawComplexControl(QStyle::CC_MdiControls, &copt9, &painter, 0);
#endif
    }

    //Check standard pixmaps/icons
    for ( int i = 0 ; i < int(QStyle::SP_ToolBarVerticalExtensionButton); ++i) {
        QPixmap pixmap = style->standardPixmap(QStyle::StandardPixmap(i));
        if (pixmap.isNull()) {
            qWarning("missing StandardPixmap: %d", i);
        }
        QIcon icn = style->standardIcon(QStyle::StandardPixmap(i));
        if (icn.isNull()) {
            qWarning("missing StandardIcon: %d", i);
        }
    }

    style->itemPixmapRect(QRect(0, 0, 100, 100), Qt::AlignHCenter, QPixmap(200, 200));
    style->itemTextRect(QFontMetrics(qApp->font()), QRect(0, 0, 100, 100), Qt::AlignHCenter, true, QString("Test"));

    testScrollBarSubControls(style);
}

void tst_QStyle::testScrollBarSubControls(QStyle* style)
{
#ifdef Q_OS_WINCE_WM
    if (qobject_cast<QWindowsMobileStyle*>(style) && qt_wince_is_smartphone())
        QSKIP("SmartPhone doesn't have scrollbar subcontrols.", SkipAll);
#endif

    QScrollBar scrollBar;
    scrollBar.show();
    const QStyleOptionSlider opt = qt_qscrollbarStyleOption(&scrollBar);
    foreach (int subControl, QList<int>() << 1 << 2 << 4 << 8) {

#ifdef Q_WS_S60
// in s60style add line and sub line have been removed.
        if (subControl == QStyle::SC_ScrollBarAddLine || subControl == QStyle::SC_ScrollBarSubLine )
            continue;
#endif
        QRect sr = testWidget->style()->subControlRect(QStyle::CC_ScrollBar, &opt,
                                    QStyle::SubControl(subControl), &scrollBar);
        QVERIFY(sr.isNull() == false);
    }
}

void tst_QStyle::testPlastiqueStyle()
{
#if !defined(QT_NO_STYLE_PLASTIQUE)
    QPlastiqueStyle pstyle;
    testAllFunctions(&pstyle);
    lineUpLayoutTest(&pstyle);
#else
    QSKIP("No Plastique style", SkipAll);
#endif
}

void tst_QStyle::testCleanlooksStyle()
{
#if !defined(QT_NO_STYLE_CLEANLOOKS)
    QCleanlooksStyle cstyle;
    testAllFunctions(&cstyle);
    lineUpLayoutTest(&cstyle);
#else
    QSKIP("No Cleanlooks style", SkipAll);
#endif
}

void tst_QStyle::testWindowsStyle()
{
    QWindowsStyle wstyle;
    testAllFunctions(&wstyle);
    lineUpLayoutTest(&wstyle);
}

void tst_QStyle::testWindowsXPStyle()
{
#if defined(Q_WS_WIN) && !defined(QT_NO_STYLE_WINDOWSXP)
    QWindowsXPStyle xpstyle;
    testAllFunctions(&xpstyle);
    lineUpLayoutTest(&xpstyle);
#else
    QSKIP("No WindowsXP style", SkipAll);
#endif
}

void writeImage(const QString &fileName, QImage image)
{
    QImageWriter imageWriter(fileName);
    imageWriter.setFormat("png");
    qDebug() << "result " << imageWriter.write(image);
}

QImage readImage(const QString &fileName)
{
    QImageReader reader(fileName);
    return reader.read();
}


void tst_QStyle::testWindowsVistaStyle()
{
#if defined(Q_WS_WIN) && !defined(QT_NO_STYLE_WINDOWSVISTA)
    QWindowsVistaStyle vistastyle;
    testAllFunctions(&vistastyle);

    if (QSysInfo::WindowsVersion == QSysInfo::WV_VISTA)
        testPainting(&vistastyle, "vista");
#endif
}

void comparePixmap(const QString &filename, const QPixmap &pixmap)
{
    QImage oldFile = readImage(filename);
    QPixmap oldPixmap = QPixmap::fromImage(oldFile);
    if (!oldFile.isNull())
        QVERIFY(pixmapsAreEqual(&pixmap, &oldPixmap));
    else
        writeImage(filename, pixmap.toImage());
}

void tst_QStyle::testPainting(QStyle *style, const QString &platform)
{
    //Test Menu
    QString fileName = "images/" + platform + "/menu.png";
    QMenu menu;
    menu.setStyle(style);
    menu.show();
    menu.addAction(new QAction("Test 1", &menu));
    menu.addAction(new QAction("Test 2", &menu));
    QPixmap pixmap = QPixmap::grabWidget(&menu);
    comparePixmap(fileName, pixmap);

    //Push button
    fileName = "images/" + platform + "/button.png";
    QPushButton button("OK");
    button.setStyle(style);
    button.show();
    pixmap = QPixmap::grabWidget(&button);
    button.hide();
    comparePixmap(fileName, pixmap);

    //Push button
    fileName = "images/" + platform + "/radiobutton.png";
    QRadioButton radiobutton("Check");
    radiobutton.setStyle(style);
    radiobutton.show();
    pixmap = QPixmap::grabWidget(&radiobutton);
    radiobutton.hide();
    comparePixmap(fileName, pixmap);

    //Combo box
    fileName = "images/" + platform + "/combobox.png";
    QComboBox combobox;
    combobox.setStyle(style);
    combobox.addItem("Test 1");
    combobox.addItem("Test 2");
    combobox.show();
    pixmap = QPixmap::grabWidget(&combobox);
    combobox.hide();
    comparePixmap(fileName, pixmap);

    //Spin box
    fileName = "images/" + platform + "/spinbox.png";
    QDoubleSpinBox spinbox;
    spinbox.setLocale(QLocale(QLocale::English, QLocale::UnitedStates));
    spinbox.setStyle(style);
    spinbox.show();
    pixmap = QPixmap::grabWidget(&spinbox);
    spinbox.hide();
    comparePixmap(fileName, pixmap);
    QLocale::setDefault(QLocale::system());

    //Slider
    fileName = "images/" + platform + "/slider.png";
    QSlider slider;
    slider.setStyle(style);
    slider.show();
    pixmap = QPixmap::grabWidget(&slider);
    slider.hide();
    comparePixmap(fileName, pixmap);

    //Line edit
    fileName = "images/" + platform + "/lineedit.png";
    QLineEdit lineedit("Test text");
    lineedit.setStyle(style);
    lineedit.show();
    pixmap = QPixmap::grabWidget(&lineedit);
    lineedit.hide();
    comparePixmap(fileName, pixmap);

    //MDI
    fileName = "images/" + platform + "/mdi.png";
    QMdiArea mdiArea;
    mdiArea.addSubWindow(new QWidget(&mdiArea));
    mdiArea.resize(200, 200);
    mdiArea.setStyle(style);
    mdiArea.show();
    pixmap = QPixmap::grabWidget(&mdiArea);
    mdiArea.hide();
    comparePixmap(fileName, pixmap);
}

void tst_QStyle::testMacStyle()
{
#ifdef Q_WS_MAC
    QMacStyle mstyle;
    testAllFunctions(&mstyle);
#endif
}

void tst_QStyle::testMotifStyle()
{
#if !defined(QT_NO_STYLE_MOTIF)
    QMotifStyle mstyle;
    testAllFunctions(&mstyle);
#else
    QSKIP("No Motif style", SkipAll);
#endif
}

void tst_QStyle::testCDEStyle()
{
#if !defined(QT_NO_STYLE_CDE)
    QCDEStyle cstyle;
    testAllFunctions(&cstyle);
#else
    QSKIP("No CDE style", SkipAll);
#endif
}

void tst_QStyle::testWindowsCEStyle()
{
#if defined(Q_OS_WINCE)
    QWindowsCEStyle cstyle;
    testAllFunctions(&cstyle);
#else
    QSKIP("No WindowsCEStyle style", SkipAll);
#endif
}

void tst_QStyle::testWindowsMobileStyle()
{
#if defined(Q_OS_WINCE_WM)
    QWindowsMobileStyle cstyle;
    testAllFunctions(&cstyle);
#else
    QSKIP("No WindowsMobileStyle style", SkipAll);
#endif
}

void tst_QStyle::testS60Style()
    {
#if defined(Q_WS_S60)
    QS60Style cstyle;
    testAllFunctions(&cstyle);
#else
    QSKIP("No S60Style style", SkipAll);
#endif
    }

// Helper class...

MyWidget::MyWidget( QWidget* parent, const char* name )
    : QWidget( parent )
{
    setObjectName(name);
}

void MyWidget::paintEvent( QPaintEvent* )
{
    QPainter p(this);
    QPixmap big(400,400);
    big.fill(Qt::green);
    style()->drawItemPixmap(&p, rect(), Qt::AlignCenter, big);
}


class Qt42Style : public QWindowsStyle
{
    Q_OBJECT
public:
    Qt42Style() : QWindowsStyle()
    {
        margin_toplevel = 10;
        margin = 5;
        spacing = 0;
    }

    virtual int pixelMetric(PixelMetric metric, const QStyleOption * option = 0,
                            const QWidget * widget = 0 ) const;

    int margin_toplevel;
    int margin;
    int spacing;

};

int Qt42Style::pixelMetric(PixelMetric metric, const QStyleOption * option /*= 0*/,
                                   const QWidget * widget /*= 0*/ ) const
{
    switch (metric) {
        case QStyle::PM_DefaultTopLevelMargin:
            return margin_toplevel;
        break;
        case QStyle::PM_DefaultChildMargin:
            return margin;
        break;
        case QStyle::PM_DefaultLayoutSpacing:
            return spacing;
        break;
        default:
            break;
    }
    return QWindowsStyle::pixelMetric(metric, option, widget);
}


void tst_QStyle::pixelMetric()
{
    Qt42Style *style = new Qt42Style();
    QCOMPARE(style->pixelMetric(QStyle::PM_DefaultTopLevelMargin), 10);
    QCOMPARE(style->pixelMetric(QStyle::PM_DefaultChildMargin), 5);
    QCOMPARE(style->pixelMetric(QStyle::PM_DefaultLayoutSpacing), 0);

    style->margin_toplevel = 0;
    style->margin = 0;
    style->spacing = 0;
    QCOMPARE(style->pixelMetric(QStyle::PM_DefaultTopLevelMargin), 0);
    QCOMPARE(style->pixelMetric(QStyle::PM_DefaultChildMargin), 0);
    QCOMPARE(style->pixelMetric(QStyle::PM_DefaultLayoutSpacing), 0);

    style->margin_toplevel = -1;
    style->margin = -1;
    style->spacing = -1;
    QCOMPARE(style->pixelMetric(QStyle::PM_DefaultTopLevelMargin), -1);
    QCOMPARE(style->pixelMetric(QStyle::PM_DefaultChildMargin), -1);
    QCOMPARE(style->pixelMetric(QStyle::PM_DefaultLayoutSpacing), -1);

    delete style;
}

void tst_QStyle::progressBarChangeStyle()
{
#if !defined(QT_NO_STYLE_PLASTIQUE) && !defined(QT_NO_STYLE_WINDOWS)
    //test a crashing situation (task 143530)
    //where changing the styles and deleting a progressbar would crash

    QWindowsStyle style1;
    QPlastiqueStyle style2;

    QProgressBar *progress=new QProgressBar;
    progress->setStyle(&style1);

    progress->show();

    progress->setStyle(&style2);

    QTest::qWait(100);
    delete progress;

    QTest::qWait(100);

    //before the correction, there would be a crash here
#elif !defined(QT_NO_STYLE_S60) && !defined(QT_NO_STYLE_WINDOWS)
    //test a crashing situation (task 143530)
    //where changing the styles and deleting a progressbar would crash

    QWindowsStyle style1;
    QS60Style style2;

    QProgressBar *progress=new QProgressBar;
    progress->setStyle(&style1);

    progress->show();

    progress->setStyle(&style2);

    QTest::qWait(100);
    delete progress;

    QTest::qWait(100);

    //before the correction, there would be a crash here
#else
    QSKIP("Either style Plastique or Windows or S60 missing", SkipAll);
#endif
}

void tst_QStyle::lineUpLayoutTest(QStyle *style)
{
    QWidget widget;
    QHBoxLayout layout;
    QFont font;
    font.setPointSize(9); //Plastique is lined up for odd numbers...
    widget.setFont(font);
    QSpinBox spinbox(&widget);
    QLineEdit lineedit(&widget);
    QComboBox combo(&widget);
    combo.setEditable(true);
    layout.addWidget(&spinbox);
    layout.addWidget(&lineedit);
    layout.addWidget(&combo);
    widget.setLayout(&layout);
        widget.setStyle(style);
        // propagate the style.
        foreach (QWidget *w, qFindChildren<QWidget *>(&widget))
            w->setStyle(style);
    widget.show();
        QTest::qWait( 500 );

    QVERIFY(qAbs(spinbox.height() - lineedit.height()) <= 1);
    QVERIFY(qAbs(spinbox.height() - combo.height()) <= 1);
}

void tst_QStyle::defaultFont()
{
    QFont defaultFont = qApp->font();
    QFont pointFont = defaultFont;
    pointFont.setPixelSize(9);
    qApp->setFont(pointFont);
    QPushButton button;
    button.show();
    qApp->processEvents();
    qApp->setFont(defaultFont);
}

QTEST_MAIN(tst_QStyle)
#include "tst_qstyle.moc"