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#include <QtTest/QtTest>

#include <qcoreapplication.h>

#include <qdebug.h>

#include <qscrollarea.h>

#include <qlayout.h>

//TESTED_CLASS=

//TESTED_FILES=

class tst_QScrollArea : public QObject

{

Q_OBJECT

public:

    tst_QScrollArea();

    virtual ~tst_QScrollArea();

private slots:

    void getSetCheck();

    void ensureMicroFocusVisible_Task_167838();

    void checkHFW_Task_197736();

};

tst_QScrollArea::tst_QScrollArea()

{

}

tst_QScrollArea::~tst_QScrollArea()

{

}

// Testing get/set functions

void tst_QScrollArea::getSetCheck()

{

    QScrollArea obj1;

    // QWidget * QScrollArea::widget()

    // void QScrollArea::setWidget(QWidget *)

    QWidget *var1 = new QWidget();

    obj1.setWidget(var1);

    QCOMPARE(var1, obj1.widget());

    obj1.setWidget((QWidget *)0);

    QCOMPARE(var1, obj1.widget()); // Cannot set a 0-widget. Old widget returned

    // delete var1; // No delete, since QScrollArea takes ownership

    // bool QScrollArea::widgetResizable()

    // void QScrollArea::setWidgetResizable(bool)

    obj1.setWidgetResizable(false);

    QCOMPARE(false, obj1.widgetResizable());

    obj1.setWidgetResizable(true);

    QCOMPARE(true, obj1.widgetResizable());

}

class WidgetWithMicroFocus : public QWidget

{

public:

    WidgetWithMicroFocus(QWidget *parent = 0) : QWidget(parent)

    {

        setBackgroundRole(QPalette::Dark);

    }

protected:

    QVariant inputMethodQuery(Qt::InputMethodQuery query) const

    {

        if (query == Qt::ImMicroFocus)

            return QRect(width() / 2, height() / 2, 5, 5);

        return QWidget::inputMethodQuery(query);

    }

//     void paintEvent(QPaintEvent *event)

//     {

//         QPainter painter(this);

//         painter.fillRect(rect(), QBrush(Qt::red));

//     }

};

void tst_QScrollArea::ensureMicroFocusVisible_Task_167838()

{

    QScrollArea scrollArea;

    scrollArea.resize(100, 100);

    scrollArea.show();

    QWidget *parent = new QWidget;

    parent->setLayout(new QVBoxLayout);

    QWidget *child = new WidgetWithMicroFocus;

    parent->layout()->addWidget(child);

    parent->resize(300, 300); 

    scrollArea.setWidget(parent);

    scrollArea.ensureWidgetVisible(child, 10, 10);

    QRect microFocus = child->inputMethodQuery(Qt::ImMicroFocus).toRect();

    QPoint p = child->mapTo(scrollArea.viewport(), microFocus.topLeft());

    microFocus.translate(p - microFocus.topLeft());

    QVERIFY(scrollArea.viewport()->rect().contains(microFocus));

}

class HFWWidget : public QWidget

{

    public:

        HFWWidget();

        int heightForWidth(int w) const;

};

HFWWidget::HFWWidget()

    : QWidget()

{

    setMinimumSize(QSize(100,50));

    QSizePolicy s = sizePolicy();

    s.setHeightForWidth(true);

    setSizePolicy(s);

}

int HFWWidget::heightForWidth(int w) const

{

    // Mimic a label - the narrower we are, the taller we have to be

    if (w > 0)

        return 40000 / w;

    else

        return 40000;

}

void tst_QScrollArea::checkHFW_Task_197736()

{

    QScrollArea scrollArea;

    HFWWidget *w = new HFWWidget;

    scrollArea.resize(200,100);

    scrollArea.show();

    scrollArea.setWidgetResizable(true);

    scrollArea.setWidget(w);

    // at 200x100px, we expect HFW to be 200px tall, not 100px

    QVERIFY(w->height() >= 200);

    // at 200x300px, we expect HFW to be 300px tall (the heightForWidth is a min, not prescribed)

    scrollArea.resize(QSize(200, 300));

    QVERIFY(w->height() >= 250); // 50px for a fudge factor (size of frame margins/scrollbars etc)

    // make sure this only happens with widget resizable

    scrollArea.setWidgetResizable(false);

    scrollArea.resize(QSize(100,100));

    w->resize(QSize(200,200));

    QVERIFY(w->width() == 200);

    QVERIFY(w->height() == 200);

}

QTEST_MAIN(tst_QScrollArea)

#include "tst_qscrollarea.moc"