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** This file is part of the test suite of the Qt Toolkit.

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

#include <qtest.h>

#include <QDebug>

#include <QGraphicsItem>

#include <QGraphicsScene>

#include <QGraphicsView>

#include <QImage>

#include "chiptester/chiptester.h"

//#define CALLGRIND_DEBUG

#ifdef CALLGRIND_DEBUG

#include "valgrind/callgrind.h"

#endif

//TESTED_FILES=

static inline void processEvents()

{

    QPixmapCache::clear();

    QApplication::flush();

    QApplication::processEvents();

    QApplication::processEvents();

}

class TestView : public QGraphicsView

{

    Q_OBJECT

public:

    TestView() : QGraphicsView(), waiting(false), timerId(-1)

    {}

    void waitForPaintEvent(int timeout = 4000)

    {

        if (waiting)

            return;

        waiting = true;

        timerId = startTimer(timeout);

        eventLoop.exec();

        killTimer(timerId);

        timerId = -1;

        waiting = false;

    }

    void tryResize(int width, int height)

    {

        QDesktopWidget *desktop = QApplication::desktop();

        if (desktop->width() < width)

            width = desktop->width();

        if (desktop->height() < height)

            height = desktop->height();

        if (size() != QSize(width, height)) {

            resize(width, height);

            QTest::qWait(250);

            processEvents();

        }

    }

protected:

    void paintEvent(QPaintEvent *event)

    {

        QGraphicsView::paintEvent(event);

        if (waiting)

            eventLoop.exit();

    }

    void timerEvent(QTimerEvent *event)

    {

        if (event->timerId() == timerId)

            eventLoop.exit();

    }

private:

    QEventLoop eventLoop;

    bool waiting;

    int timerId;

};

class tst_QGraphicsView : public QObject

{

    Q_OBJECT

public:

    tst_QGraphicsView();

    virtual ~tst_QGraphicsView();

public slots:

    void initTestCase();

    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();

private:

    TestView mView;

};

tst_QGraphicsView::tst_QGraphicsView()

{

}

tst_QGraphicsView::~tst_QGraphicsView()

{

}

void tst_QGraphicsView::initTestCase()

{

    mView.setFrameStyle(0);

    mView.setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);

    mView.setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);

    mView.tryResize(100, 100);

    mView.show();

    QTest::qWaitForWindowShown(&mView);

    QTest::qWait(300);

    processEvents();

}

void tst_QGraphicsView::init()

{

    mView.setRenderHints(QPainter::RenderHints(0));

    mView.viewport()->setMouseTracking(false);

    mView.setViewportUpdateMode(QGraphicsView::BoundingRectViewportUpdate);

    for (int i = 0; i < 3; ++i)

        processEvents();

}

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);

    mView.setScene(&scene);

    mView.tryResize(100, 100);

    processEvents();

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

    QPainter painter(&image);

    QBENCHMARK {

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

    }

}

#define DEEP_STACKING_COUNT 85

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 < DEEP_STACKING_COUNT; ++i) {

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

        rect->setPos(1, 1);

        rect->setParentItem(lastRect);

        lastRect = rect;

    }

    mView.setScene(&scene);

    mView.tryResize(100, 100);

    processEvents();

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

    QPainter painter(&image);

    QBENCHMARK {

        mView.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 < DEEP_STACKING_COUNT; ++i) {

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

        rect->setPos(1, 1);

        rect->setParentItem(lastRect);

        lastRect = rect;

    }

    mView.setScene(&scene);

    mView.tryResize(100, 100);

    processEvents();

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

    QPainter painter(&image);

    QBENCHMARK {

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

    }

}

void tst_QGraphicsView::moveSingleItem()

{

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

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

    mView.setScene(&scene);

    mView.tryResize(100, 100);

    processEvents();

    int n = 1;

    QBENCHMARK {

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

        mView.waitForPaintEvent();

        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);

    processEvents();

    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);

    processEvents();

    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);

    processEvents();

    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);

    processEvents();

    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.setAntialias(antialias);

    tester.setOpenGL(opengl);

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

    tester.show();

    QTest::qWaitForWindowShown(&tester);

    QTest::qWait(250);

    processEvents();

    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);

    scene.setSceneRect(scene.sceneRect());

    mView.setRenderHint(QPainter::Antialiasing);

    mView.setScene(&scene);

    mView.tryResize(600, 600);

    (void)scene.itemAt(0, 0);

    processEvents();

    QBENCHMARK {

#ifdef CALLGRIND_DEBUG

        CALLGRIND_START_INSTRUMENTATION

#endif

        mView.viewport()->update();

        mView.waitForPaintEvent();

#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;