/****************************************************************************

**

** 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.

**

**

**

**

**

**

**

**

** $QT_END_LICENSE$

**

****************************************************************************/

#include <qtest.h>

#include <QDebug>

#include <QGraphicsItem>

#include <QGraphicsScene>

#include <QGraphicsView>

#include <QImage>

#ifdef Q_WS_X11

QT_BEGIN_NAMESPACE

extern void qt_x11_wait_for_window_manager(QWidget *);

QT_END_NAMESPACE

#endif

#include "chiptester/chiptester.h"

//#define CALLGRIND_DEBUG

#ifdef CALLGRIND_DEBUG

#include "valgrind/callgrind.h"

#endif

//TESTED_FILES=

class QEventWaiter : public QEventLoop

{

public:

    QEventWaiter(QObject *receiver, QEvent::Type type)

	: waiting(false), t(type)

    {

	receiver->installEventFilter(this);

    }

    void wait()

    {

	waiting = true;

	exec();

    }

    bool eventFilter(QObject *receiver, QEvent *event)

    {

	Q_UNUSED(receiver);

	if (waiting && event->type() == t) {

	    waiting = false;

	    exit();

	}

	return false;

    }

private:

    bool waiting;

    QEvent::Type t;

};

class tst_QGraphicsView : public QObject

{

    Q_OBJECT

public:

    tst_QGraphicsView();

    virtual ~tst_QGraphicsView();

public slots:

    void init();

    void cleanup();

private slots:

    void construct();

    void paintSingleItem();

    void paintDeepStackingItems();

    void paintDeepStackingItems_clipped();

    void moveSingleItem();

    void mapPointToScene_data();

    void mapPointToScene();

    void mapPointFromScene_data();

    void mapPointFromScene();

    void mapRectToScene_data();

    void mapRectToScene();

    void mapRectFromScene_data();

    void mapRectFromScene();

    void chipTester_data();

    void chipTester();

    void deepNesting_data();

    void deepNesting();

    void imageRiver_data();

    void imageRiver();

    void textRiver_data();

    void textRiver();

    void moveItemCache_data();

    void moveItemCache();

    void paintItemCache_data();

    void paintItemCache();

};

tst_QGraphicsView::tst_QGraphicsView()

{

}

tst_QGraphicsView::~tst_QGraphicsView()

{

}

void tst_QGraphicsView::init()

{

}

void tst_QGraphicsView::cleanup()

{

}

void tst_QGraphicsView::construct()

{

    QBENCHMARK {

        QGraphicsView view;

    }

}

void tst_QGraphicsView::paintSingleItem()

{

    QGraphicsScene scene(0, 0, 100, 100);

    scene.addRect(0, 0, 10, 10);

    QGraphicsView view(&scene);

    view.show();

    view.resize(100, 100);

#ifdef Q_WS_X11

    qt_x11_wait_for_window_manager(&view);

#endif

    QImage image(100, 100, QImage::Format_ARGB32_Premultiplied);

    QPainter painter(&image);

    QBENCHMARK {

	view.viewport()->render(&painter);

    }

}

void tst_QGraphicsView::paintDeepStackingItems()

{

    QGraphicsScene scene(0, 0, 100, 100);

    QGraphicsRectItem *item = scene.addRect(0, 0, 10, 10);

    QGraphicsRectItem *lastRect = item;

    for (int i = 0; i < 1000; ++i) {

	QGraphicsRectItem *rect = scene.addRect(0, 0, 10, 10);

	rect->setPos(1, 1);

	rect->setParentItem(lastRect);	

	lastRect = rect;

    }

    QGraphicsView view(&scene);

    view.show();

    view.resize(100, 100);

#ifdef Q_WS_X11

    qt_x11_wait_for_window_manager(&view);

#endif

    QImage image(100, 100, QImage::Format_ARGB32_Premultiplied);

    QPainter painter(&image);

    QBENCHMARK {

	view.viewport()->render(&painter);

    }

}

void tst_QGraphicsView::paintDeepStackingItems_clipped()

{

    QGraphicsScene scene(0, 0, 100, 100);

    QGraphicsRectItem *item = scene.addRect(0, 0, 10, 10);

    item->setFlag(QGraphicsItem::ItemClipsChildrenToShape);

    QGraphicsRectItem *lastRect = item;

    for (int i = 0; i < 1000; ++i) {

	QGraphicsRectItem *rect = scene.addRect(0, 0, 10, 10);

	rect->setPos(1, 1);

	rect->setParentItem(lastRect);	

	lastRect = rect;

    }

    QGraphicsView view(&scene);

    view.show();

    view.resize(100, 100);

#ifdef Q_WS_X11

    qt_x11_wait_for_window_manager(&view);

#endif

    QImage image(100, 100, QImage::Format_ARGB32_Premultiplied);

    QPainter painter(&image);

    QBENCHMARK {

	view.viewport()->render(&painter);

    }

}

void tst_QGraphicsView::moveSingleItem()

{

    QGraphicsScene scene(0, 0, 100, 100);

    QGraphicsRectItem *item = scene.addRect(0, 0, 10, 10);

    QGraphicsView view(&scene);

    view.show();

    view.resize(100, 100);

#ifdef Q_WS_X11

    qt_x11_wait_for_window_manager(&view);

#endif

    QEventWaiter waiter(view.viewport(), QEvent::Paint);

    int n = 1;

    QBENCHMARK {

        item->setPos(25 * n, 25 * n);

	waiter.wait();

	n = n ? 0 : 1;

    }

}

void tst_QGraphicsView::mapPointToScene_data()

{

    QTest::addColumn<QTransform>("transform");

    QTest::addColumn<QPoint>("point");

    QTest::newRow("null") << QTransform() << QPoint();

    QTest::newRow("identity  QPoint(100, 100)") << QTransform() << QPoint(100, 100);

    QTest::newRow("rotate    QPoint(100, 100)") << QTransform().rotate(90) << QPoint(100, 100);

    QTest::newRow("scale     QPoint(100, 100)") << QTransform().scale(5, 5) << QPoint(100, 100);

    QTest::newRow("translate QPoint(100, 100)") << QTransform().translate(5, 5) << QPoint(100, 100);

    QTest::newRow("shear     QPoint(100, 100)") << QTransform().shear(1.5, 1.5) << QPoint(100, 100);

    QTest::newRow("perspect  QPoint(100, 100)") << QTransform().rotate(45, Qt::XAxis) << QPoint(100, 100);

}

void tst_QGraphicsView::mapPointToScene()

{

    QFETCH(QTransform, transform);

    QFETCH(QPoint, point);

    QGraphicsView view;

    view.setTransform(transform);

    QBENCHMARK {

        view.mapToScene(point);

    }

}

void tst_QGraphicsView::mapPointFromScene_data()

{

    QTest::addColumn<QTransform>("transform");

    QTest::addColumn<QPointF>("point");

    QTest::newRow("null") << QTransform() << QPointF();

    QTest::newRow("identity  QPointF(100, 100)") << QTransform() << QPointF(100, 100);

    QTest::newRow("rotate    QPointF(100, 100)") << QTransform().rotate(90) << QPointF(100, 100);

    QTest::newRow("scale     QPointF(100, 100)") << QTransform().scale(5, 5) << QPointF(100, 100);

    QTest::newRow("translate QPointF(100, 100)") << QTransform().translate(5, 5) << QPointF(100, 100);

    QTest::newRow("shear     QPointF(100, 100)") << QTransform().shear(1.5, 1.5) << QPointF(100, 100);

    QTest::newRow("perspect  QPointF(100, 100)") << QTransform().rotate(45, Qt::XAxis) << QPointF(100, 100);

}

void tst_QGraphicsView::mapPointFromScene()

{

    QFETCH(QTransform, transform);

    QFETCH(QPointF, point);

    QGraphicsView view;

    view.setTransform(transform);

    QBENCHMARK {

        view.mapFromScene(point);

    }

}

void tst_QGraphicsView::mapRectToScene_data()

{

    QTest::addColumn<QTransform>("transform");

    QTest::addColumn<QRect>("rect");

    QTest::newRow("null") << QTransform() << QRect();

    QTest::newRow("identity  QRect(0, 0, 100, 100)") << QTransform() << QRect(0, 0, 100, 100);

    QTest::newRow("rotate    QRect(0, 0, 100, 100)") << QTransform().rotate(90) << QRect(0, 0, 100, 100);

    QTest::newRow("scale     QRect(0, 0, 100, 100)") << QTransform().scale(5, 5) << QRect(0, 0, 100, 100);

    QTest::newRow("translate QRect(0, 0, 100, 100)") << QTransform().translate(5, 5) << QRect(0, 0, 100, 100);

    QTest::newRow("shear     QRect(0, 0, 100, 100)") << QTransform().shear(1.5, 1.5) << QRect(0, 0, 100, 100);

    QTest::newRow("perspect  QRect(0, 0, 100, 100)") << QTransform().rotate(45, Qt::XAxis) << QRect(0, 0, 100, 100);

}

void tst_QGraphicsView::mapRectToScene()

{

    QFETCH(QTransform, transform);

    QFETCH(QRect, rect);

    QGraphicsView view;

    view.setTransform(transform);

    QBENCHMARK {

        view.mapToScene(rect);

    }

}

void tst_QGraphicsView::mapRectFromScene_data()

{

    QTest::addColumn<QTransform>("transform");

    QTest::addColumn<QRectF>("rect");

    QTest::newRow("null") << QTransform() << QRectF();

    QTest::newRow("identity  QRectF(0, 0, 100, 100)") << QTransform() << QRectF(0, 0, 100, 100);

    QTest::newRow("rotate    QRectF(0, 0, 100, 100)") << QTransform().rotate(90) << QRectF(0, 0, 100, 100);

    QTest::newRow("scale     QRectF(0, 0, 100, 100)") << QTransform().scale(5, 5) << QRectF(0, 0, 100, 100);

    QTest::newRow("translate QRectF(0, 0, 100, 100)") << QTransform().translate(5, 5) << QRectF(0, 0, 100, 100);

    QTest::newRow("shear     QRectF(0, 0, 100, 100)") << QTransform().shear(1.5, 1.5) << QRectF(0, 0, 100, 100);

    QTest::newRow("perspect  QRectF(0, 0, 100, 100)") << QTransform().rotate(45, Qt::XAxis) << QRectF(0, 0, 100, 100);

}

void tst_QGraphicsView::mapRectFromScene()

{

    QFETCH(QTransform, transform);

    QFETCH(QRectF, rect);

    QGraphicsView view;

    view.setTransform(transform);

    QBENCHMARK {

        view.mapFromScene(rect);

    }

}

void tst_QGraphicsView::chipTester_data()

{

    QTest::addColumn<bool>("antialias");

    QTest::addColumn<bool>("opengl");

    QTest::addColumn<int>("operation");

    QTest::newRow("rotate, normal") << false << false << 0;

    QTest::newRow("rotate, normal, antialias") << true << false << 0;

    QTest::newRow("rotate, opengl") << false << true << 0;

    QTest::newRow("rotate, opengl, antialias") << true << true << 0;

    QTest::newRow("zoom, normal") << false << false << 1;

    QTest::newRow("zoom, normal, antialias") << true << false << 1;

    QTest::newRow("zoom, opengl") << false << true << 1;

    QTest::newRow("zoom, opengl, antialias") << true << true << 1;

    QTest::newRow("translate, normal") << false << false << 2;

    QTest::newRow("translate, normal, antialias") << true << false << 2;

    QTest::newRow("translate, opengl") << false << true << 2;

    QTest::newRow("translate, opengl, antialias") << true << true << 2;

}

void tst_QGraphicsView::chipTester()

{

    QFETCH(bool, antialias);

    QFETCH(bool, opengl);

    QFETCH(int, operation);

    ChipTester tester;

    tester.show();

#ifdef Q_WS_X11

    qt_x11_wait_for_window_manager(&tester);

#endif

    tester.setAntialias(antialias);

    tester.setOpenGL(opengl);

    tester.setOperation(ChipTester::Operation(operation));

    QBENCHMARK {

	tester.runBenchmark();

    }

}

static void addChildHelper(QGraphicsItem *parent, int n, bool rotate)

{

    if (!n)

	return;

    QGraphicsRectItem *item = new QGraphicsRectItem(QRectF(0, 0, 50, 50), parent);

    item->setPos(10, 10);

    if (rotate)

	item->rotate(10);

    addChildHelper(item, n - 1, rotate);

}

void tst_QGraphicsView::deepNesting_data()

{

    QTest::addColumn<bool>("rotate");

    QTest::addColumn<bool>("sortCache");

    QTest::addColumn<bool>("bsp");

    QTest::newRow("bsp, no transform") << false << false << true;

    QTest::newRow("bsp, rotation") << true << false << true;

    QTest::newRow("bsp, no transform, sort cache") << false << true << true;

    QTest::newRow("bsp, rotation, sort cache") << true << true << true;

    QTest::newRow("no transform") << false << false << false;

    QTest::newRow("rotation") << true << false << false;

    QTest::newRow("no transform, sort cache") << false << true << false;

    QTest::newRow("rotation, sort cache") << true << true << false;

}

void tst_QGraphicsView::deepNesting()

{

    QFETCH(bool, rotate);

    QFETCH(bool, sortCache);

    QFETCH(bool, bsp);

    QGraphicsScene scene;

    for (int y = 0; y < 15; ++y) {

	for (int x = 0; x < 15; ++x) {

	    QGraphicsItem *item1 = scene.addRect(QRectF(0, 0, 50, 50));

	    if (rotate) item1->rotate(10);

	    item1->setPos(x * 25, y * 25);

	    addChildHelper(item1, 30, rotate);

	}

    }

    scene.setItemIndexMethod(bsp ? QGraphicsScene::BspTreeIndex : QGraphicsScene::NoIndex);

    scene.setSortCacheEnabled(sortCache);

    QGraphicsView view(&scene);

    view.setRenderHint(QPainter::Antialiasing);

    view.show();

#ifdef Q_WS_X11

    qt_x11_wait_for_window_manager(&view);

#endif

    QTest::qWait(250);

    QBENCHMARK {

#ifdef CALLGRIND_DEBUG

	CALLGRIND_START_INSTRUMENTATION

#endif

	view.viewport()->repaint();

#ifdef CALLGRIND_DEBUG

	CALLGRIND_STOP_INSTRUMENTATION

#endif

    }

}

class AnimatedPixmapItem : public QGraphicsPixmapItem

{

public:

    AnimatedPixmapItem(int x, int y, bool rot, bool scal, QGraphicsItem *parent = 0)

        : QGraphicsPixmapItem(parent), rotateFactor(0), scaleFactor(0)

    {

	rotate = rot;

	scale = scal;

	xspeed = x;

	yspeed = y;

    }

protected:

    void advance(int i)

    { 

	if (!i)

	    return;

	int x = int(pos().x()) + pixmap().width();

	x += xspeed;

	x = (x % (300 + pixmap().width() * 2)) - pixmap().width();

	int y = int(pos().y()) + pixmap().width();

	y += yspeed;

	y = (y % (300 + pixmap().width() * 2)) - pixmap().width();

	setPos(x, y);

	int rot = rotateFactor;

	int sca = scaleFactor;

        if (rotate)

	    rotateFactor = 1 + (rot + xspeed) % 360;

        if (scale)

	    scaleFactor = 1 + (sca + yspeed) % 50;

	if (rotate || scale) {

	    qreal s = 0.5 + scaleFactor / 50.0;

	    setTransform(QTransform().rotate(rotateFactor).scale(s, s));

	}

    }

private:

    int xspeed;

    int yspeed;

    int rotateFactor;

    int scaleFactor;

    bool rotate;

    bool scale;

};

class CountPaintEventView : public QGraphicsView

{

public:

    CountPaintEventView(QGraphicsScene *scene = 0)

        : QGraphicsView(scene), count(0)

    { }

    int count;

protected:

    void paintEvent(QPaintEvent *event)

    {

        ++count;

        QGraphicsView::paintEvent(event);

    };

};

void tst_QGraphicsView::imageRiver_data()

{

    QTest::addColumn<int>("direction");

    QTest::addColumn<bool>("rotation");

    QTest::addColumn<bool>("scale");

    QTest::newRow("horizontal") << 0 << false << false;

    QTest::newRow("vertical") << 1 << false << false;

    QTest::newRow("both") << 2 << false << false;

    QTest::newRow("horizontal rot") << 0 << true << false;

    QTest::newRow("horizontal scale") << 0 << false << true;

    QTest::newRow("horizontal rot + scale") << 0 << true << true;

}