qt 6.5.1 original

tests/benchmarks/widgets/graphicsview/qgraphicsview/benchapps/chipTest/CMakeLists.txt

@@ -0,0 +1,42 @@
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+#####################################################################
+## chip Binary:
+#####################################################################
+
+qt_internal_add_benchmark(chip
+    GUI
+    SOURCES
+        chip.cpp chip.h
+        main.cpp
+        mainwindow.cpp mainwindow.h
+        view.cpp view.h
+    LIBRARIES
+        Qt::Gui
+)
+
+# Resources:
+set(images_resource_files
+    "fileprint.png"
+    "qt4logo.png"
+    "rotateleft.png"
+    "rotateright.png"
+    "zoomin.png"
+    "zoomout.png"
+)
+
+qt_internal_add_resource(chip "images"
+    PREFIX
+        "/"
+    FILES
+        ${images_resource_files}
+)
+
+## Scopes:
+#####################################################################
+
+qt_internal_extend_target(chip CONDITION TARGET Qt::OpenGL
+    LIBRARIES
+        Qt::OpenGL
+)

tests/benchmarks/widgets/graphicsview/qgraphicsview/benchapps/chipTest/chip.cpp

@@ -0,0 +1,139 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#include "chip.h"
+
+#include <QtGui>
+
+Chip::Chip(const QColor &color, int x, int y)
+{
+    this->x = x;
+    this->y = y;
+    this->color = color;
+    setZValue((x + y) % 2);
+
+    setFlags(ItemIsSelectable | ItemIsMovable);
+    setAcceptHoverEvents(true);
+}
+
+QRectF Chip::boundingRect() const
+{
+    return QRectF(0, 0, 110, 70);
+}
+
+QPainterPath Chip::shape() const
+{
+    QPainterPath path;
+    path.addRect(14, 14, 82, 42);
+    return path;
+}
+
+void Chip::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
+{
+    Q_UNUSED(widget);
+
+    QColor fillColor = (option->state & QStyle::State_Selected) ? color.dark(150) : color;
+    if (option->state & QStyle::State_MouseOver)
+        fillColor = fillColor.light(125);
+
+    const qreal lod = option->levelOfDetailFromTransform(painter->worldTransform());
+    if (lod < 0.2) {
+        if (lod < 0.125) {
+            painter->fillRect(QRectF(0, 0, 110, 70), fillColor);
+            return;
+        }
+
+        painter->setPen(QPen(Qt::black, 0));
+        painter->setBrush(fillColor);
+        painter->drawRect(13, 13, 97, 57);
+        return;
+    }
+
+    QPen oldPen = painter->pen();
+    QPen pen = oldPen;
+    int width = 0;
+    if (option->state & QStyle::State_Selected)
+        width += 2;
+
+    pen.setWidth(width);
+    painter->setBrush(QBrush(fillColor.dark(option->state & QStyle::State_Sunken ? 120 : 100)));
+
+    painter->drawRect(QRect(14, 14, 79, 39));
+    if (lod >= 1) {
+        painter->setPen(QPen(Qt::gray, 1));
+        painter->drawLine(15, 54, 94, 54);
+        painter->drawLine(94, 53, 94, 15);
+        painter->setPen(QPen(Qt::black, 0));
+    }
+
+    // Draw text
+    if (lod >= 2) {
+        QFont font("Times", 10);
+        font.setStyleStrategy(QFont::ForceOutline);
+        painter->setFont(font);
+        painter->save();
+        painter->scale(0.1, 0.1);
+        painter->drawText(170, 180, QString("Model: VSC-2000 (Very Small Chip) at %1x%2").arg(x).arg(y));
+        painter->drawText(170, 200, QString("Serial number: DLWR-WEER-123L-ZZ33-SDSJ"));
+        painter->drawText(170, 220, QString("Manufacturer: Chip Manufacturer"));
+        painter->restore();
+    }
+
+    // Draw lines
+    QVarLengthArray<QLineF, 36> lines;
+    if (lod >= 0.5) {
+        for (int i = 0; i <= 10; i += (lod > 0.5 ? 1 : 2)) {
+            lines.append(QLineF(18 + 7 * i, 13, 18 + 7 * i, 5));
+            lines.append(QLineF(18 + 7 * i, 54, 18 + 7 * i, 62));
+        }
+        for (int i = 0; i <= 6; i += (lod > 0.5 ? 1 : 2)) {
+            lines.append(QLineF(5, 18 + i * 5, 13, 18 + i * 5));
+            lines.append(QLineF(94, 18 + i * 5, 102, 18 + i * 5));
+        }
+    }
+    if (lod >= 0.4) {
+        const QLineF lineData[] = {
+            QLineF(25, 35, 35, 35),
+            QLineF(35, 30, 35, 40),
+            QLineF(35, 30, 45, 35),
+            QLineF(35, 40, 45, 35),
+            QLineF(45, 30, 45, 40),
+            QLineF(45, 35, 55, 35)
+        };
+        lines.append(lineData, 6);
+    }
+    painter->drawLines(lines.data(), lines.size());
+
+    // Draw red ink
+    if (stuff.size() > 1) {
+        painter->setPen(QPen(Qt::red, 1, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin));
+        painter->setBrush(Qt::NoBrush);
+        QPainterPath path;
+        path.moveTo(stuff.first());
+        for (int i = 1; i < stuff.size(); ++i)
+            path.lineTo(stuff.at(i));
+        painter->drawPath(path);
+    }
+}
+
+void Chip::mousePressEvent(QGraphicsSceneMouseEvent *event)
+{
+    QGraphicsItem::mousePressEvent(event);
+    update();
+}
+
+void Chip::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
+{
+    if (event->modifiers() & Qt::ShiftModifier) {
+        stuff << event->pos();
+        update();
+        return;
+    }
+    QGraphicsItem::mouseMoveEvent(event);
+}
+
+void Chip::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
+{
+    QGraphicsItem::mouseReleaseEvent(event);
+    update();
+}

tests/benchmarks/widgets/graphicsview/qgraphicsview/benchapps/chipTest/chip.h

@@ -0,0 +1,30 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#ifndef CHIP_H
+#define CHIP_H
+
+#include <QtGui/QColor>
+#include <QtGui/QGraphicsItem>
+
+class Chip : public QGraphicsItem
+{
+public:
+    Chip(const QColor &color, int x, int y);
+
+    QRectF boundingRect() const;
+    QPainterPath shape() const;
+    void paint(QPainter *painter, const QStyleOptionGraphicsItem *item, QWidget *widget);
+
+protected:
+    void mousePressEvent(QGraphicsSceneMouseEvent *event);
+    void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
+    void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
+
+private:
+    int x, y;
+    QColor color;
+    QList<QPointF> stuff;
+};
+
+#endif

tests/benchmarks/widgets/graphicsview/qgraphicsview/benchapps/chipTest/images.qrc

@@ -0,0 +1,10 @@
+<!DOCTYPE RCC><RCC version="1.0">
+<qresource>
+    <file>qt4logo.png</file>
+    <file>zoomin.png</file>
+    <file>zoomout.png</file>
+    <file>rotateleft.png</file>
+    <file>rotateright.png</file>
+    <file>fileprint.png</file>
+</qresource>
+</RCC>

tests/benchmarks/widgets/graphicsview/qgraphicsview/benchapps/chipTest/main.cpp

@@ -0,0 +1,19 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#include "mainwindow.h"
+
+#include <QApplication>
+
+int main(int argc, char **argv)
+{
+    Q_INIT_RESOURCE(images);
+
+    QApplication app(argc, argv);
+    app.setAttribute(Qt::AA_DontCreateNativeWidgetSiblings);
+
+    MainWindow window;
+    window.show();
+
+    return app.exec();
+}

tests/benchmarks/widgets/graphicsview/qgraphicsview/benchapps/chipTest/mainwindow.cpp

@@ -0,0 +1,49 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#include "mainwindow.h"
+#include "view.h"
+#include "chip.h"
+
+#include <QtGui>
+
+MainWindow::MainWindow(QWidget *parent)
+    : QWidget(parent)
+{
+    populateScene();
+
+    View *view = new View("Top left view");
+    view->view()->setScene(scene);
+    QHBoxLayout *layout = new QHBoxLayout;
+    layout->addWidget(view);
+    setLayout(layout);
+
+    setWindowTitle(tr("Chip Example"));
+}
+
+void MainWindow::populateScene()
+{
+    scene = new QGraphicsScene;
+
+    QImage image(":/qt4logo.png");
+
+    // Populate scene
+    int xx = 0;
+    int nitems = 0;
+    for (int i = -11000; i < 11000; i += 110) {
+        ++xx;
+        int yy = 0;
+        for (int j = -7000; j < 7000; j += 70) {
+            ++yy;
+            qreal x = (i + 11000) / 22000.0;
+            qreal y = (j + 7000) / 14000.0;
+
+            QColor color(image.pixel(int(image.width() * x), int(image.height() * y)));
+            QGraphicsItem *item = new Chip(color, xx, yy);
+            item->setPos(QPointF(i, j));
+            scene->addItem(item);
+
+            ++nitems;
+        }
+    }
+}

tests/benchmarks/widgets/graphicsview/qgraphicsview/benchapps/chipTest/mainwindow.h

@@ -0,0 +1,28 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#ifndef MAINWINDOW_H
+#define MAINWINDOW_H
+
+#include <QtGui/qwidget.h>
+
+QT_FORWARD_DECLARE_CLASS(QGraphicsScene)
+QT_FORWARD_DECLARE_CLASS(QGraphicsView)
+QT_FORWARD_DECLARE_CLASS(QLabel)
+QT_FORWARD_DECLARE_CLASS(QSlider)
+QT_FORWARD_DECLARE_CLASS(QSplitter)
+
+class MainWindow : public QWidget
+{
+    Q_OBJECT
+public:
+    MainWindow(QWidget *parent = nullptr);
+
+private:
+    void setupMatrix();
+    void populateScene();
+
+    QGraphicsScene *scene;
+};
+
+#endif

tests/benchmarks/widgets/graphicsview/qgraphicsview/benchapps/chipTest/view.cpp

@@ -0,0 +1,221 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#include "view.h"
+
+#include <QtGui>
+
+#include "valgrind/callgrind.h"
+
+#ifndef QT_NO_OPENGL
+#include <QtOpenGL>
+#endif
+
+#include <qmath.h>
+
+class CountView : public QGraphicsView
+{
+protected:
+    void paintEvent(QPaintEvent *event)
+    {
+        static int n = 0;
+        if (n)
+            CALLGRIND_START_INSTRUMENTATION
+        QGraphicsView::paintEvent(event);
+        if (n)
+            CALLGRIND_STOP_INSTRUMENTATION
+        if (++n == 500)
+            qApp->quit();
+    }
+};
+
+View::View(const QString &name, QWidget *parent)
+    : QFrame(parent)
+{
+    setFrameStyle(Sunken | StyledPanel);
+    graphicsView = new CountView;
+    graphicsView->setRenderHint(QPainter::Antialiasing, false);
+    graphicsView->setDragMode(QGraphicsView::RubberBandDrag);
+    graphicsView->setViewportUpdateMode(QGraphicsView::SmartViewportUpdate);
+
+    int size = style()->pixelMetric(QStyle::PM_ToolBarIconSize);
+    QSize iconSize(size, size);
+
+    QToolButton *zoomInIcon = new QToolButton;
+    zoomInIcon->setAutoRepeat(true);
+    zoomInIcon->setAutoRepeatInterval(33);
+    zoomInIcon->setAutoRepeatDelay(0);
+    zoomInIcon->setIcon(QPixmap(":/zoomin.png"));
+    zoomInIcon->setIconSize(iconSize);
+    QToolButton *zoomOutIcon = new QToolButton;
+    zoomOutIcon->setAutoRepeat(true);
+    zoomOutIcon->setAutoRepeatInterval(33);
+    zoomOutIcon->setAutoRepeatDelay(0);
+    zoomOutIcon->setIcon(QPixmap(":/zoomout.png"));
+    zoomOutIcon->setIconSize(iconSize);
+    zoomSlider = new QSlider;
+    zoomSlider->setMinimum(0);
+    zoomSlider->setMaximum(500);
+    zoomSlider->setValue(250);
+    zoomSlider->setTickPosition(QSlider::TicksRight);
+
+    // Zoom slider layout
+    QVBoxLayout *zoomSliderLayout = new QVBoxLayout;
+    zoomSliderLayout->addWidget(zoomInIcon);
+    zoomSliderLayout->addWidget(zoomSlider);
+    zoomSliderLayout->addWidget(zoomOutIcon);
+
+    QToolButton *rotateLeftIcon = new QToolButton;
+    rotateLeftIcon->setIcon(QPixmap(":/rotateleft.png"));
+    rotateLeftIcon->setIconSize(iconSize);
+    QToolButton *rotateRightIcon = new QToolButton;
+    rotateRightIcon->setIcon(QPixmap(":/rotateright.png"));
+    rotateRightIcon->setIconSize(iconSize);
+    rotateSlider = new QSlider;
+    rotateSlider->setOrientation(Qt::Horizontal);
+    rotateSlider->setMinimum(-360);
+    rotateSlider->setMaximum(360);
+    rotateSlider->setValue(0);
+    rotateSlider->setTickPosition(QSlider::TicksBelow);
+
+    // Rotate slider layout
+    QHBoxLayout *rotateSliderLayout = new QHBoxLayout;
+    rotateSliderLayout->addWidget(rotateLeftIcon);
+    rotateSliderLayout->addWidget(rotateSlider);
+    rotateSliderLayout->addWidget(rotateRightIcon);
+
+    resetButton = new QToolButton;
+    resetButton->setText(tr("0"));
+    resetButton->setEnabled(false);
+
+    // Label layout
+    QHBoxLayout *labelLayout = new QHBoxLayout;
+    label = new QLabel(name);
+    antialiasButton = new QToolButton;
+    antialiasButton->setText(tr("Antialiasing"));
+    antialiasButton->setCheckable(true);
+    antialiasButton->setChecked(false);
+    openGlButton = new QToolButton;
+    openGlButton->setText(tr("OpenGL"));
+    openGlButton->setCheckable(true);
+#ifndef QT_NO_OPENGL
+    openGlButton->setEnabled(QGLFormat::hasOpenGL());
+#else
+    openGlButton->setEnabled(false);
+#endif
+    printButton = new QToolButton;
+    printButton->setIcon(QIcon(QPixmap(":/fileprint.png")));
+
+    labelLayout->addWidget(label);
+    labelLayout->addStretch();
+    labelLayout->addWidget(antialiasButton);
+    labelLayout->addWidget(openGlButton);
+    labelLayout->addWidget(printButton);
+
+    QGridLayout *topLayout = new QGridLayout;
+    topLayout->addLayout(labelLayout, 0, 0);
+    topLayout->addWidget(graphicsView, 1, 0);
+    topLayout->addLayout(zoomSliderLayout, 1, 1);
+    topLayout->addLayout(rotateSliderLayout, 2, 0);
+    topLayout->addWidget(resetButton, 2, 1);
+    setLayout(topLayout);
+
+    connect(resetButton, SIGNAL(clicked()), this, SLOT(resetView()));
+    connect(zoomSlider, SIGNAL(valueChanged(int)), this, SLOT(setupMatrix()));
+    connect(rotateSlider, SIGNAL(valueChanged(int)), this, SLOT(setupMatrix()));
+    connect(graphicsView->verticalScrollBar(), SIGNAL(valueChanged(int)), this, SLOT(setResetButtonEnabled()));
+    connect(graphicsView->horizontalScrollBar(), SIGNAL(valueChanged(int)), this, SLOT(setResetButtonEnabled()));
+    connect(antialiasButton, SIGNAL(toggled(bool)), this, SLOT(toggleAntialiasing()));
+    connect(openGlButton, SIGNAL(toggled(bool)), this, SLOT(toggleOpenGL()));
+    connect(rotateLeftIcon, SIGNAL(clicked()), this, SLOT(rotateLeft()));
+    connect(rotateRightIcon, SIGNAL(clicked()), this, SLOT(rotateRight()));
+    connect(zoomInIcon, SIGNAL(clicked()), this, SLOT(zoomIn()));
+    connect(zoomOutIcon, SIGNAL(clicked()), this, SLOT(zoomOut()));
+    connect(printButton, SIGNAL(clicked()), this, SLOT(print()));
+
+    setupMatrix();
+
+    startTimer(0);
+}
+
+QGraphicsView *View::view() const
+{
+    return graphicsView;
+}
+
+void View::resetView()
+{
+    zoomSlider->setValue(250);
+    rotateSlider->setValue(0);
+    setupMatrix();
+    graphicsView->ensureVisible(QRectF(0, 0, 0, 0));
+
+    resetButton->setEnabled(false);
+}
+
+void View::setResetButtonEnabled()
+{
+    resetButton->setEnabled(true);
+}
+
+void View::setupMatrix()
+{
+    qreal scale = qPow(qreal(2), (zoomSlider->value() - 250) / qreal(50));
+
+    QTransform matrix;
+    matrix.scale(scale, scale);
+    matrix.rotate(rotateSlider->value());
+
+    graphicsView->setMatrix(matrix);
+    setResetButtonEnabled();
+}
+
+void View::toggleOpenGL()
+{
+#ifndef QT_NO_OPENGL
+    graphicsView->setViewport(openGlButton->isChecked() ? new QGLWidget(QGLFormat(QGL::SampleBuffers)) : new QWidget);
+#endif
+}
+
+void View::toggleAntialiasing()
+{
+    graphicsView->setRenderHint(QPainter::Antialiasing, antialiasButton->isChecked());
+}
+
+void View::print()
+{
+#ifndef QT_NO_PRINTER
+    QPrinter printer;
+    QPrintDialog dialog(&printer, this);
+    if (dialog.exec() == QDialog::Accepted) {
+        QPainter painter(&printer);
+        graphicsView->render(&painter);
+    }
+#endif
+}
+
+void View::zoomIn()
+{
+    zoomSlider->setValue(zoomSlider->value() + 1);
+}
+
+void View::zoomOut()
+{
+    zoomSlider->setValue(zoomSlider->value() - 1);
+}
+
+void View::rotateLeft()
+{
+    rotateSlider->setValue(rotateSlider->value() - 10);
+}
+
+void View::rotateRight()
+{
+    rotateSlider->setValue(rotateSlider->value() + 10);
+}
+
+void View::timerEvent(QTimerEvent *)
+{
+    graphicsView->horizontalScrollBar()->setValue(graphicsView->horizontalScrollBar()->value() + 1);
+}
+

tests/benchmarks/widgets/graphicsview/qgraphicsview/benchapps/chipTest/view.h

@@ -0,0 +1,48 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#ifndef VIEW_H
+#define VIEW_H
+
+#include <QFrame>
+
+QT_FORWARD_DECLARE_CLASS(QGraphicsView)
+QT_FORWARD_DECLARE_CLASS(QLabel)
+QT_FORWARD_DECLARE_CLASS(QSlider)
+QT_FORWARD_DECLARE_CLASS(QToolButton)
+
+class View : public QFrame
+{
+    Q_OBJECT
+public:
+    View(const QString &name, QWidget *parent = nullptr);
+
+    QGraphicsView *view() const;
+
+private slots:
+    void resetView();
+    void setResetButtonEnabled();
+    void setupMatrix();
+    void toggleOpenGL();
+    void toggleAntialiasing();
+    void print();
+
+    void zoomIn();
+    void zoomOut();
+    void rotateLeft();
+    void rotateRight();
+
+    void timerEvent(QTimerEvent *);
+
+private:
+    QGraphicsView *graphicsView;
+    QLabel *label;
+    QToolButton *openGlButton;
+    QToolButton *antialiasButton;
+    QToolButton *printButton;
+    QToolButton *resetButton;
+    QSlider *zoomSlider;
+    QSlider *rotateSlider;
+};
+
+#endif

tests/benchmarks/widgets/graphicsview/qgraphicsview/benchapps/moveItems/CMakeLists.txt

@@ -0,0 +1,14 @@
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+#####################################################################
+## moveItems Binary:
+#####################################################################
+
+qt_internal_add_benchmark(moveItems
+    GUI
+    SOURCES
+        main.cpp
+    LIBRARIES
+        Qt::Gui
+)

tests/benchmarks/widgets/graphicsview/qgraphicsview/benchapps/moveItems/main.cpp

@@ -0,0 +1,62 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+#include <QtGui>
+
+#include "valgrind/callgrind.h"
+
+class View : public QGraphicsView
+{
+    Q_OBJECT
+public:
+    View(QGraphicsScene *scene, QGraphicsItem *item)
+        : QGraphicsView(scene), _item(item)
+    {
+    }
+
+protected:
+    void paintEvent(QPaintEvent *event)
+    {
+        static int n = 0;
+        if (n)
+            CALLGRIND_START_INSTRUMENTATION
+        QGraphicsView::paintEvent(event);
+        _item->moveBy(1, 1);
+        if (n)
+            CALLGRIND_STOP_INSTRUMENTATION
+        if (++n == 200)
+            qApp->quit();
+    }
+
+private:
+    QGraphicsItem *_item;
+};
+
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+
+    if (argc < 2) {
+        qDebug("usage: ./%s <numItems>", argv[0]);
+        return 1;
+    }
+
+    QGraphicsScene scene(-150, -150, 300, 300);
+    scene.setItemIndexMethod(QGraphicsScene::NoIndex);
+
+    QGraphicsRectItem *item = scene.addRect(-50, -50, 100, 100, QPen(Qt::NoPen), QBrush(Qt::blue));
+    item->setFlag(QGraphicsItem::ItemIsMovable);
+
+    for (int i = 0; i < atoi(argv[1]); ++i) {
+        QGraphicsRectItem *child = scene.addRect(-5, -5, 10, 10, QPen(Qt::NoPen), QBrush(Qt::blue));
+        child->setPos(-50 + QRandomGenerator::global()->bounded(100), -50 + QRandomGenerator::global()->bounded(100));
+        child->setParentItem(item);
+    }
+
+    View view(&scene, item);
+    view.resize(300, 300);
+    view.show();
+
+    return app.exec();
+}
+
+#include "main.moc"

tests/benchmarks/widgets/graphicsview/qgraphicsview/benchapps/scrolltest/CMakeLists.txt

@@ -0,0 +1,14 @@
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+#####################################################################
+## scrolltest Binary:
+#####################################################################
+
+qt_internal_add_benchmark(scrolltest
+    GUI
+    SOURCES
+        main.cpp
+    LIBRARIES
+        Qt::Gui
+)

tests/benchmarks/widgets/graphicsview/qgraphicsview/benchapps/scrolltest/main.cpp

@@ -0,0 +1,109 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+#include <QtGui>
+
+#include "valgrind/callgrind.h"
+
+class ItemMover : public QObject
+{
+    Q_OBJECT
+public:
+    ItemMover(QGraphicsItem *item)
+        : _item(item)
+    {
+        startTimer(0);
+    }
+
+protected:
+    void timerEvent(QTimerEvent *event)
+    {
+        _item->moveBy(-1, 0);
+    }
+
+private:
+    QGraphicsItem *_item;
+};
+
+class ClipItem : public QGraphicsRectItem
+{
+public:
+    ClipItem(qreal x, qreal y, qreal w, qreal h, const QPen &pen, const QBrush &brush)
+        : QGraphicsRectItem(x, y, w, h)
+    {
+        setPen(pen);
+        setBrush(brush);
+    }
+
+    QPainterPath shape() const
+    {
+        QPainterPath path;
+        path.addRect(rect());
+        return path;
+    }
+};
+
+class CountView : public QGraphicsView
+{
+protected:
+    void paintEvent(QPaintEvent *event)
+    {
+        static int n = 0;
+        if (n)
+            CALLGRIND_START_INSTRUMENTATION
+        QGraphicsView::paintEvent(event);
+        if (n)
+            CALLGRIND_STOP_INSTRUMENTATION
+        if (++n == 500)
+            qApp->quit();
+    }
+};
+
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+
+    QGraphicsScene scene;
+    scene.setItemIndexMethod(QGraphicsScene::NoIndex);
+
+    ClipItem *clipItem = new ClipItem(0, 0, 100, 100, QPen(), QBrush(Qt::blue));
+    clipItem->setFlag(QGraphicsItem::ItemClipsChildrenToShape);
+    clipItem->setData(0, "clipItem");
+    scene.addItem(clipItem);
+
+    QGraphicsRectItem *scrollItem = scene.addRect(0, 0, 10, 10, QPen(Qt::NoPen), QBrush(Qt::NoBrush));
+    scrollItem->setParentItem(clipItem);
+    scrollItem->setFlag(QGraphicsItem::ItemIsMovable);
+    scrollItem->setData(0, "scrollItem");
+
+    for (int y = 0; y < 25; ++y) {
+        for (int x = 0; x < 25; ++x) {
+            ClipItem *rect = new ClipItem(0, 0, 90, 20, QPen(Qt::NoPen), QBrush(Qt::green));
+            rect->setParentItem(scrollItem);
+            rect->setPos(x * 95, y * 25);
+            rect->setData(0, qPrintable(QString("rect %1 %2").arg(x).arg(y)));
+            rect->setFlag(QGraphicsItem::ItemClipsChildrenToShape);
+
+            QGraphicsEllipseItem *ellipse = new QGraphicsEllipseItem(-5, -5, 10, 10);
+            ellipse->setPen(QPen(Qt::NoPen));
+            ellipse->setBrush(QBrush(Qt::yellow));
+            ellipse->setParentItem(rect);
+            ellipse->setData(0, qPrintable(QString("ellipse %1 %2").arg(x).arg(y)));
+        }
+    }
+
+    scrollItem->setRect(scrollItem->childrenBoundingRect());
+
+#if 0
+    ItemMover mover(scrollItem);
+#endif
+
+    CountView view;
+    view.setScene(&scene);
+    view.setSceneRect(-25, -25, 150, 150);
+    view.resize(300, 300);
+    view.show();
+
+    return app.exec();
+}
+
+#include "main.moc"