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#include <qtest.h>
#include <QtTest/QSignalSpy>
#include <QtQml/qqmlcomponent.h>
#include <QtQml/qqmlcontext.h>
#include <QtQuick/qquickview.h>
#include <QtQuick/qquickitem.h>
#include "../../shared/util.h"
#include <QtGui/QWindow>
#include <QtCore/QDebug>
#include <QtQml/qqmlengine.h>

#include <QtQuickWidgets/QQuickWidget>

class tst_qquickwidget : public QQmlDataTest
{
    Q_OBJECT
public:
    tst_qquickwidget();

private slots:
    void showHide();
    void reparentAfterShow();
    void changeGeometry();
    void resizemodeitem();
    void errors();
    void engine();
    void readback();
};


tst_qquickwidget::tst_qquickwidget()
{
}

void tst_qquickwidget::showHide()
{
    QWidget window;

    QQuickWidget *childView = new QQuickWidget(&window);
    childView->setSource(testFileUrl("rectangle.qml"));

    window.show();
    QVERIFY(QTest::qWaitForWindowExposed(&window, 5000));

    childView->hide();
}

void tst_qquickwidget::reparentAfterShow()
{
    QWidget window;

    QQuickWidget *childView = new QQuickWidget(&window);
    childView->setSource(testFileUrl("rectangle.qml"));
    window.show();
    QVERIFY(QTest::qWaitForWindowExposed(&window, 5000));

    QScopedPointer<QQuickWidget> toplevelView(new QQuickWidget);
    toplevelView->setParent(&window);
    toplevelView->setSource(testFileUrl("rectangle.qml"));
    toplevelView->show();
    QVERIFY(QTest::qWaitForWindowExposed(&window, 5000));
}

void tst_qquickwidget::changeGeometry()
{
    QWidget window;

    QQuickWidget *childView = new QQuickWidget(&window);
    childView->setSource(testFileUrl("rectangle.qml"));

    window.show();
    QVERIFY(QTest::qWaitForWindowExposed(&window, 5000));

    childView->setGeometry(100,100,100,100);
}

void tst_qquickwidget::resizemodeitem()
{
    QWidget window;
    window.setGeometry(0, 0, 400, 400);

    QScopedPointer<QQuickWidget> view(new QQuickWidget);
    view->setParent(&window);
    view->setResizeMode(QQuickWidget::SizeRootObjectToView);
    QCOMPARE(QSize(0,0), view->initialSize());
    view->setSource(testFileUrl("resizemodeitem.qml"));
    QQuickItem* item = qobject_cast<QQuickItem*>(view->rootObject());
    QVERIFY(item);
    window.show();

    view->showNormal();
    // initial size from root object
    QCOMPARE(item->width(), 200.0);
    QCOMPARE(item->height(), 200.0);
    QCOMPARE(view->size(), QSize(200, 200));
    QCOMPARE(view->size(), view->sizeHint());
    QCOMPARE(view->size(), view->initialSize());

    // size update from view
    view->resize(QSize(80,100));

    QTRY_COMPARE(item->width(), 80.0);
    QCOMPARE(item->height(), 100.0);
    QCOMPARE(view->size(), QSize(80, 100));
    QCOMPARE(view->size(), view->sizeHint());

    view->setResizeMode(QQuickWidget::SizeViewToRootObject);

    // size update from view disabled
    view->resize(QSize(60,80));
    QCOMPARE(item->width(), 80.0);
    QCOMPARE(item->height(), 100.0);
    QTRY_COMPARE(view->size(), QSize(60, 80));

    // size update from root object
    item->setWidth(250);
    item->setHeight(350);
    QCOMPARE(item->width(), 250.0);
    QCOMPARE(item->height(), 350.0);
    QTRY_COMPARE(view->size(), QSize(250, 350));
    QCOMPARE(view->size(), QSize(250, 350));
    QCOMPARE(view->size(), view->sizeHint());

    // reset window
    window.hide();
    view.reset(new QQuickWidget(&window));
    view->setResizeMode(QQuickWidget::SizeViewToRootObject);
    view->setSource(testFileUrl("resizemodeitem.qml"));
    item = qobject_cast<QQuickItem*>(view->rootObject());
    QVERIFY(item);
    window.show();

    view->showNormal();

    // initial size for root object
    QCOMPARE(item->width(), 200.0);
    QCOMPARE(item->height(), 200.0);
    QCOMPARE(view->size(), view->sizeHint());
    QCOMPARE(view->size(), view->initialSize());

    // size update from root object
    item->setWidth(80);
    item->setHeight(100);
    QCOMPARE(item->width(), 80.0);
    QCOMPARE(item->height(), 100.0);
    QTRY_COMPARE(view->size(), QSize(80, 100));
    QCOMPARE(view->size(), view->sizeHint());

    // size update from root object disabled
    view->setResizeMode(QQuickWidget::SizeRootObjectToView);
    item->setWidth(60);
    item->setHeight(80);
    QCOMPARE(view->width(), 80);
    QCOMPARE(view->height(), 100);
    QCOMPARE(QSize(item->width(), item->height()), view->sizeHint());

    // size update from view
    view->resize(QSize(200,300));
    QTRY_COMPARE(item->width(), 200.0);
    QCOMPARE(item->height(), 300.0);
    QCOMPARE(view->size(), QSize(200, 300));
    QCOMPARE(view->size(), view->sizeHint());

    window.hide();

    // if we set a specific size for the view then it should keep that size
    // for SizeRootObjectToView mode.
    view.reset(new QQuickWidget(&window));
    view->resize(300, 300);
    view->setResizeMode(QQuickWidget::SizeRootObjectToView);
    QCOMPARE(QSize(0,0), view->initialSize());
    view->setSource(testFileUrl("resizemodeitem.qml"));
    view->resize(300, 300);
    item = qobject_cast<QQuickItem*>(view->rootObject());
    QVERIFY(item);
    window.show();

    view->showNormal();

    // initial size from root object
    QCOMPARE(item->width(), 300.0);
    QCOMPARE(item->height(), 300.0);
    QTRY_COMPARE(view->size(), QSize(300, 300));
    QCOMPARE(view->size(), view->sizeHint());
    QCOMPARE(view->initialSize(), QSize(200, 200)); // initial object size
}

void tst_qquickwidget::errors()
{
    QQuickWidget *view = new QQuickWidget;
    QScopedPointer<QQuickWidget> cleanupView(view);

    QQmlTestMessageHandler messageHandler;
    view->setSource(testFileUrl("error1.qml"));
    QVERIFY(view->status() == QQuickWidget::Error);
    QVERIFY(view->errors().count() == 1);
}

void tst_qquickwidget::engine()
{
    QScopedPointer<QQmlEngine> engine(new QQmlEngine);
    QScopedPointer<QQuickWidget> view(new QQuickWidget(engine.data(), 0));
    QScopedPointer<QQuickWidget> view2(new QQuickWidget(view->engine(), 0));

    QVERIFY(view->engine());
    QVERIFY(view2->engine());
    QCOMPARE(view->engine(), view2->engine());
}

void tst_qquickwidget::readback()
{
#ifdef Q_OS_MAC
    QSKIP("Skipping due to issues on OS X: QTBUG-39919");
#endif

    QWidget window;

    QScopedPointer<QQuickWidget> view(new QQuickWidget);
    view->setSource(testFileUrl("rectangle.qml"));

    view->show();
    QVERIFY(QTest::qWaitForWindowExposed(view.data(), 5000));

    QImage img = view->grabFramebuffer();
    QVERIFY(!img.isNull());
    QCOMPARE(img.width(), view->width());
    QCOMPARE(img.height(), view->height());

    QRgb pix = img.pixel(5, 5);
    QCOMPARE(pix, qRgb(255, 0, 0));
}

QTEST_MAIN(tst_qquickwidget)

#include "tst_qquickwidget.moc"