Move chart example to manual test

Pick-to: 6.5 6.6
Change-Id: I95a40834853a0157d8fa6137431bfd86ce855b2f
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>

12 files changed, 0 insertions, 905 deletions

diff --git a/examples/widgets/doc/src/chart.qdoc b/examples/widgets/doc/src/chart.qdoc
deleted file mode 100644
index abb1b3ab7e..0000000000
--- a/examples/widgets/doc/src/chart.qdoc
+++ /dev/null
@@ -1,58 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only
-
-/*!
-    \example itemviews/chart
-    \title Chart Example
-    \ingroup examples-itemviews
-    \brief The Chart example shows how to create a custom view for the model/view framework.
-
-    \image chart-example.png
-
-    In this example, the items in a table model are represented as slices in a pie chart,
-    relying on the flexibility of the model/view architecture to handle custom editing
-    and selection features.
-
-    \b{Note that you only need to create a new view class if your data requires a
-    specialized representation.} You should first consider using a standard QListView,
-    QTableView, or QTreeView with a custom QItemDelegate subclass if you need to
-    represent data in a special way.
-
-    \omit
-    \section1 PieView Class Definition
-
-    The \c PieView class is a subclass of QAbstractItemView. The base class provides
-    much of the functionality required by view classes, so we only need to provide
-    implementations for three public functions: visualRect(), scrollTo(), and
-    indexAt(). However, the view needs to maintain strict control over its look and
-    feel, so we also provide implementations for a number of other functions:
-
-    \snippet itemviews/chart/pieview.h 0
-
-
-
-    \section1 PieView Class Implementation
-
-    The paint event renders the data from the standard item model as a pie chart.
-    We interpret the data in the following way:
-
-    \list
-    \li Column 0 contains data in two different roles:
-       The \l{Qt::ItemDataRole}{DisplayRole} contains a label, and the
-       \l{Qt::ItemDataRole}{DecorationRole} contains the color of the pie slice.
-    \li Column 1 contains a quantity which we will convert to the angular extent of
-       the slice.
-    \endlist
-
-    The figure is always drawn with the chart on the left and the key on
-    the right. This means that we must try and obtain an area that is wider
-    than it is tall. We do this by imposing a particular aspect ratio on
-    the chart and applying it to the available vertical space. This ensures
-    that we always obtain the maximum horizontal space for the aspect ratio
-    used.
-    We also apply fixed size margin around the figure.
-
-    We use logical coordinates to draw the chart and key, and position them
-    on the view using viewports.
-    \endomit
-*/
diff --git a/examples/widgets/itemviews/CMakeLists.txt b/examples/widgets/itemviews/CMakeLists.txt
index 4a30dc3729..b2ef8c416a 100644
--- a/examples/widgets/itemviews/CMakeLists.txt
+++ b/examples/widgets/itemviews/CMakeLists.txt
@@ -3,7 +3,6 @@
 
 qt_internal_add_example(addressbook)
 qt_internal_add_example(basicsortfiltermodel)
-qt_internal_add_example(chart)
 qt_internal_add_example(coloreditorfactory)
 qt_internal_add_example(combowidgetmapper)
 qt_internal_add_example(customsortfiltermodel)
diff --git a/examples/widgets/itemviews/chart/CMakeLists.txt b/examples/widgets/itemviews/chart/CMakeLists.txt
deleted file mode 100644
index 78e1fc7c7a..0000000000
--- a/examples/widgets/itemviews/chart/CMakeLists.txt
+++ /dev/null
@@ -1,56 +0,0 @@
-# Copyright (C) 2022 The Qt Company Ltd.
-# SPDX-License-Identifier: BSD-3-Clause
-
-cmake_minimum_required(VERSION 3.16)
-project(chart LANGUAGES CXX)
-
-if(NOT DEFINED INSTALL_EXAMPLESDIR)
-    set(INSTALL_EXAMPLESDIR "examples")
-endif()
-
-set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/widgets/itemviews/chart")
-
-find_package(Qt6 REQUIRED COMPONENTS Core Gui Widgets)
-
-qt_standard_project_setup()
-
-qt_add_executable(chart
-    main.cpp
-    mainwindow.cpp mainwindow.h
-    pieview.cpp pieview.h
-)
-
-set_target_properties(chart PROPERTIES
-    WIN32_EXECUTABLE TRUE
-    MACOSX_BUNDLE TRUE
-)
-
-target_link_libraries(chart PRIVATE
-    Qt6::Core
-    Qt6::Gui
-    Qt6::Widgets
-)
-
-# Resources:
-set(chart_resource_files
-    "qtdata.cht"
-)
-
-qt_add_resources(chart "chart"
-    PREFIX
-        "/Charts"
-    FILES
-        ${chart_resource_files}
-)
-
-if(UNIX AND NOT APPLE AND NOT HAIKU AND NOT INTEGRITY AND NOT VXWORKS)
-    target_link_libraries(chart PRIVATE
-        m
-    )
-endif()
-
-install(TARGETS chart
-    RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
-    BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
-    LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}"
-)
diff --git a/examples/widgets/itemviews/chart/chart.pro b/examples/widgets/itemviews/chart/chart.pro
deleted file mode 100644
index 323f6202e4..0000000000
--- a/examples/widgets/itemviews/chart/chart.pro
+++ /dev/null
@@ -1,14 +0,0 @@
-QT += widgets
-requires(qtConfig(filedialog))
-
-HEADERS     = mainwindow.h \
-              pieview.h
-RESOURCES   = chart.qrc
-SOURCES     = main.cpp \
-              mainwindow.cpp \
-              pieview.cpp
-unix:!mac:!vxworks:!integrity:!haiku:LIBS += -lm
-
-# install
-target.path = $$[QT_INSTALL_EXAMPLES]/widgets/itemviews/chart
-INSTALLS += target
diff --git a/examples/widgets/itemviews/chart/chart.qrc b/examples/widgets/itemviews/chart/chart.qrc
deleted file mode 100644
index 7401d4d2f8..0000000000
--- a/examples/widgets/itemviews/chart/chart.qrc
+++ /dev/null
@@ -1,5 +0,0 @@
-<!DOCTYPE RCC><RCC version="1.0">
-<qresource prefix="/Charts" >
-   <file>qtdata.cht</file>
-</qresource>
-</RCC>
diff --git a/examples/widgets/itemviews/chart/main.cpp b/examples/widgets/itemviews/chart/main.cpp
deleted file mode 100644
index 7d7cf3e573..0000000000
--- a/examples/widgets/itemviews/chart/main.cpp
+++ /dev/null
@@ -1,14 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-#include <QApplication>
-
-#include "mainwindow.h"
-
-int main(int argc, char *argv[])
-{
-    QApplication app(argc, argv);
-    MainWindow window;
-    window.show();
-    return app.exec();
-}
diff --git a/examples/widgets/itemviews/chart/mainwindow.cpp b/examples/widgets/itemviews/chart/mainwindow.cpp
deleted file mode 100644
index 450f2e3a56..0000000000
--- a/examples/widgets/itemviews/chart/mainwindow.cpp
+++ /dev/null
@@ -1,136 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-#include "pieview.h"
-#include "mainwindow.h"
-
-#include <QtWidgets>
-
-MainWindow::MainWindow(QWidget *parent)
-    : QMainWindow(parent)
-{
-    QMenu *fileMenu = new QMenu(tr("&File"), this);
-    QAction *openAction = fileMenu->addAction(tr("&Open..."));
-    openAction->setShortcuts(QKeySequence::Open);
-    QAction *saveAction = fileMenu->addAction(tr("&Save As..."));
-    saveAction->setShortcuts(QKeySequence::SaveAs);
-    QAction *quitAction = fileMenu->addAction(tr("E&xit"));
-    quitAction->setShortcuts(QKeySequence::Quit);
-
-    setupModel();
-    setupViews();
-
-    connect(openAction, &QAction::triggered, this, &MainWindow::openFile);
-    connect(saveAction, &QAction::triggered, this, &MainWindow::saveFile);
-    connect(quitAction, &QAction::triggered, qApp, &QCoreApplication::quit);
-
-    menuBar()->addMenu(fileMenu);
-    statusBar();
-
-    loadFile(":/Charts/qtdata.cht");
-
-    setWindowTitle(tr("Chart"));
-    resize(870, 550);
-}
-
-void MainWindow::setupModel()
-{
-    model = new QStandardItemModel(8, 2, this);
-    model->setHeaderData(0, Qt::Horizontal, tr("Label"));
-    model->setHeaderData(1, Qt::Horizontal, tr("Quantity"));
-}
-
-void MainWindow::setupViews()
-{
-    QSplitter *splitter = new QSplitter;
-    QTableView *table = new QTableView;
-    pieChart = new PieView;
-    splitter->addWidget(table);
-    splitter->addWidget(pieChart);
-    splitter->setStretchFactor(0, 0);
-    splitter->setStretchFactor(1, 1);
-
-    table->setModel(model);
-    pieChart->setModel(model);
-
-    QItemSelectionModel *selectionModel = new QItemSelectionModel(model);
-    table->setSelectionModel(selectionModel);
-    pieChart->setSelectionModel(selectionModel);
-
-    QHeaderView *headerView = table->horizontalHeader();
-    headerView->setStretchLastSection(true);
-
-    setCentralWidget(splitter);
-}
-
-void MainWindow::openFile()
-{
-    const QString fileName =
-        QFileDialog::getOpenFileName(this, tr("Choose a data file"), "", "*.cht");
-    if (!fileName.isEmpty())
-        loadFile(fileName);
-}
-
-void MainWindow::loadFile(const QString &fileName)
-{
-    QFile file(fileName);
-    if (!file.open(QFile::ReadOnly | QFile::Text))
-        return;
-
-    QTextStream stream(&file);
-
-    model->removeRows(0, model->rowCount(QModelIndex()), QModelIndex());
-
-    int row = 0;
-    while (!stream.atEnd()) {
-        const QString line = stream.readLine();
-        if (!line.isEmpty()) {
-            model->insertRows(row, 1, QModelIndex());
-
-            const QStringList pieces = line.split(QLatin1Char(','), Qt::SkipEmptyParts);
-            if (pieces.size() < 3)
-                continue;
-            model->setData(model->index(row, 0, QModelIndex()),
-                           pieces.value(0));
-            model->setData(model->index(row, 1, QModelIndex()),
-                           pieces.value(1));
-            model->setData(model->index(row, 0, QModelIndex()),
-                           QColor(pieces.value(2)), Qt::DecorationRole);
-            row++;
-        }
-    };
-
-    file.close();
-    statusBar()->showMessage(tr("Loaded %1").arg(fileName), 2000);
-}
-
-void MainWindow::saveFile()
-{
-    QString fileName = QFileDialog::getSaveFileName(this,
-        tr("Save file as"), "", "*.cht");
-
-    if (fileName.isEmpty())
-        return;
-
-    QFile file(fileName);
-    if (!file.open(QFile::WriteOnly | QFile::Text))
-        return;
-
-    QTextStream stream(&file);
-    for (int row = 0; row < model->rowCount(QModelIndex()); ++row) {
-
-        QStringList pieces;
-
-        pieces.append(model->data(model->index(row, 0, QModelIndex()),
-                                  Qt::DisplayRole).toString());
-        pieces.append(model->data(model->index(row, 1, QModelIndex()),
-                                  Qt::DisplayRole).toString());
-        pieces.append(model->data(model->index(row, 0, QModelIndex()),
-                                  Qt::DecorationRole).toString());
-
-        stream << pieces.join(',') << "\n";
-    }
-
-    file.close();
-    statusBar()->showMessage(tr("Saved %1").arg(fileName), 2000);
-}
diff --git a/examples/widgets/itemviews/chart/mainwindow.h b/examples/widgets/itemviews/chart/mainwindow.h
deleted file mode 100644
index f2a639c952..0000000000
--- a/examples/widgets/itemviews/chart/mainwindow.h
+++ /dev/null
@@ -1,34 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-#ifndef MAINWINDOW_H
-#define MAINWINDOW_H
-
-#include <QMainWindow>
-
-QT_BEGIN_NAMESPACE
-class QAbstractItemModel;
-class QAbstractItemView;
-QT_END_NAMESPACE
-
-class MainWindow : public QMainWindow
-{
-    Q_OBJECT
-
-public:
-    MainWindow(QWidget *parent = nullptr);
-
-private slots:
-    void openFile();
-    void saveFile();
-
-private:
-    void setupModel();
-    void setupViews();
-    void loadFile(const QString &path);
-
-    QAbstractItemModel *model = nullptr;
-    QAbstractItemView *pieChart = nullptr;
-};
-
-#endif // MAINWINDOW_H
diff --git a/examples/widgets/itemviews/chart/pieview.cpp b/examples/widgets/itemviews/chart/pieview.cpp
deleted file mode 100644
index e681207f38..0000000000
--- a/examples/widgets/itemviews/chart/pieview.cpp
+++ /dev/null
@@ -1,506 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-#include "pieview.h"
-
-#include <QtWidgets>
-
-PieView::PieView(QWidget *parent)
-    : QAbstractItemView(parent)
-{
-    horizontalScrollBar()->setRange(0, 0);
-    verticalScrollBar()->setRange(0, 0);
-}
-
-void PieView::dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight,
-                          const QList<int> &roles)
-{
-    QAbstractItemView::dataChanged(topLeft, bottomRight, roles);
-
-    if (!roles.contains(Qt::DisplayRole))
-        return;
-
-    validItems = 0;
-    totalValue = 0.0;
-
-    for (int row = 0; row < model()->rowCount(rootIndex()); ++row) {
-
-        QModelIndex index = model()->index(row, 1, rootIndex());
-        double value = model()->data(index, Qt::DisplayRole).toDouble();
-
-        if (value > 0.0) {
-            totalValue += value;
-            validItems++;
-        }
-    }
-    viewport()->update();
-}
-
-bool PieView::edit(const QModelIndex &index, EditTrigger trigger, QEvent *event)
-{
-    if (index.column() == 0)
-        return QAbstractItemView::edit(index, trigger, event);
-    else
-        return false;
-}
-
-/*
-    Returns the item that covers the coordinate given in the view.
-*/
-
-QModelIndex PieView::indexAt(const QPoint &point) const
-{
-    if (validItems == 0)
-        return QModelIndex();
-
-    // Transform the view coordinates into contents widget coordinates.
-    int wx = point.x() + horizontalScrollBar()->value();
-    int wy = point.y() + verticalScrollBar()->value();
-
-    if (wx < totalSize) {
-        double cx = wx - totalSize / 2;
-        double cy = totalSize / 2 - wy; // positive cy for items above the center
-
-        // Determine the distance from the center point of the pie chart.
-        double d = std::sqrt(std::pow(cx, 2) + std::pow(cy, 2));
-
-        if (d == 0 || d > pieSize / 2)
-            return QModelIndex();
-
-        // Determine the angle of the point.
-        double angle = qRadiansToDegrees(std::atan2(cy, cx));
-        if (angle < 0)
-            angle = 360 + angle;
-
-        // Find the relevant slice of the pie.
-        double startAngle = 0.0;
-
-        for (int row = 0; row < model()->rowCount(rootIndex()); ++row) {
-
-            QModelIndex index = model()->index(row, 1, rootIndex());
-            double value = model()->data(index).toDouble();
-
-            if (value > 0.0) {
-                double sliceAngle = 360 * value / totalValue;
-
-                if (angle >= startAngle && angle < (startAngle + sliceAngle))
-                    return model()->index(row, 1, rootIndex());
-
-                startAngle += sliceAngle;
-            }
-        }
-    } else {
-        QStyleOptionViewItem option;
-        initViewItemOption(&option);
-        double itemHeight = QFontMetrics(option.font).height();
-        int listItem = int((wy - margin) / itemHeight);
-        int validRow = 0;
-
-        for (int row = 0; row < model()->rowCount(rootIndex()); ++row) {
-
-            QModelIndex index = model()->index(row, 1, rootIndex());
-            if (model()->data(index).toDouble() > 0.0) {
-
-                if (listItem == validRow)
-                    return model()->index(row, 0, rootIndex());
-
-                // Update the list index that corresponds to the next valid row.
-                ++validRow;
-            }
-        }
-    }
-
-    return QModelIndex();
-}
-
-bool PieView::isIndexHidden(const QModelIndex & /*index*/) const
-{
-    return false;
-}
-
-/*
-    Returns the rectangle of the item at position \a index in the
-    model. The rectangle is in contents coordinates.
-*/
-
-QRect PieView::itemRect(const QModelIndex &index) const
-{
-    if (!index.isValid())
-        return QRect();
-
-    // Check whether the index's row is in the list of rows represented
-    // by slices.
-    QModelIndex valueIndex;
-
-    if (index.column() != 1)
-        valueIndex = model()->index(index.row(), 1, rootIndex());
-    else
-        valueIndex = index;
-
-    if (model()->data(valueIndex).toDouble() <= 0.0)
-        return QRect();
-
-    int listItem = 0;
-    for (int row = index.row()-1; row >= 0; --row) {
-        if (model()->data(model()->index(row, 1, rootIndex())).toDouble() > 0.0)
-            listItem++;
-    }
-
-    switch (index.column()) {
-    case 0: {
-        QStyleOptionViewItem option;
-        initViewItemOption(&option);
-        const qreal itemHeight = QFontMetricsF(option.font).height();
-        return QRect(totalSize,
-                     qRound(margin + listItem * itemHeight),
-                     totalSize - margin, qRound(itemHeight));
-    }
-    case 1:
-        return viewport()->rect();
-    }
-    return QRect();
-}
-
-QRegion PieView::itemRegion(const QModelIndex &index) const
-{
-    if (!index.isValid())
-        return QRegion();
-
-    if (index.column() != 1)
-        return itemRect(index);
-
-    if (model()->data(index).toDouble() <= 0.0)
-        return QRegion();
-
-    double startAngle = 0.0;
-    for (int row = 0; row < model()->rowCount(rootIndex()); ++row) {
-
-        QModelIndex sliceIndex = model()->index(row, 1, rootIndex());
-        double value = model()->data(sliceIndex).toDouble();
-
-        if (value > 0.0) {
-            double angle = 360 * value / totalValue;
-
-            if (sliceIndex == index) {
-                QPainterPath slicePath;
-                slicePath.moveTo(totalSize / 2, totalSize / 2);
-                slicePath.arcTo(margin, margin, margin + pieSize, margin + pieSize,
-                                startAngle, angle);
-                slicePath.closeSubpath();
-
-                return QRegion(slicePath.toFillPolygon().toPolygon());
-            }
-
-            startAngle += angle;
-        }
-    }
-
-    return QRegion();
-}
-
-int PieView::horizontalOffset() const
-{
-    return horizontalScrollBar()->value();
-}
-
-void PieView::mousePressEvent(QMouseEvent *event)
-{
-    QAbstractItemView::mousePressEvent(event);
-    origin = event->position().toPoint();
-    if (!rubberBand)
-        rubberBand = new QRubberBand(QRubberBand::Rectangle, viewport());
-    rubberBand->setGeometry(QRect(origin, QSize()));
-    rubberBand->show();
-}
-
-void PieView::mouseMoveEvent(QMouseEvent *event)
-{
-    if (rubberBand)
-        rubberBand->setGeometry(QRect(origin, event->position().toPoint()).normalized());
-    QAbstractItemView::mouseMoveEvent(event);
-}
-
-void PieView::mouseReleaseEvent(QMouseEvent *event)
-{
-    QAbstractItemView::mouseReleaseEvent(event);
-    if (rubberBand)
-        rubberBand->hide();
-    viewport()->update();
-}
-
-QModelIndex PieView::moveCursor(QAbstractItemView::CursorAction cursorAction,
-                                Qt::KeyboardModifiers /*modifiers*/)
-{
-    QModelIndex current = currentIndex();
-
-    switch (cursorAction) {
-        case MoveLeft:
-        case MoveUp:
-            if (current.row() > 0)
-                current = model()->index(current.row() - 1, current.column(),
-                                         rootIndex());
-            else
-                current = model()->index(0, current.column(), rootIndex());
-            break;
-        case MoveRight:
-        case MoveDown:
-            if (current.row() < rows(current) - 1)
-                current = model()->index(current.row() + 1, current.column(),
-                                         rootIndex());
-            else
-                current = model()->index(rows(current) - 1, current.column(),
-                                         rootIndex());
-            break;
-        default:
-            break;
-    }
-
-    viewport()->update();
-    return current;
-}
-
-void PieView::paintEvent(QPaintEvent *event)
-{
-    QItemSelectionModel *selections = selectionModel();
-    QStyleOptionViewItem option;
-    initViewItemOption(&option);
-
-    QBrush background = option.palette.base();
-    QPen foreground(option.palette.color(QPalette::WindowText));
-
-    QPainter painter(viewport());
-    painter.setRenderHint(QPainter::Antialiasing);
-
-    painter.fillRect(event->rect(), background);
-    painter.setPen(foreground);
-
-    // Viewport rectangles
-    QRect pieRect = QRect(margin, margin, pieSize, pieSize);
-
-    if (validItems <= 0)
-        return;
-
-    painter.save();
-    painter.translate(pieRect.x() - horizontalScrollBar()->value(),
-                      pieRect.y() - verticalScrollBar()->value());
-    painter.drawEllipse(0, 0, pieSize, pieSize);
-    double startAngle = 0.0;
-    int row;
-
-    for (row = 0; row < model()->rowCount(rootIndex()); ++row) {
-        QModelIndex index = model()->index(row, 1, rootIndex());
-        double value = model()->data(index).toDouble();
-
-        if (value > 0.0) {
-            double angle = 360 * value / totalValue;
-
-            QModelIndex colorIndex = model()->index(row, 0, rootIndex());
-            QColor color = QColor(model()->data(colorIndex, Qt::DecorationRole).toString());
-
-            if (currentIndex() == index)
-                painter.setBrush(QBrush(color, Qt::Dense4Pattern));
-            else if (selections->isSelected(index))
-                painter.setBrush(QBrush(color, Qt::Dense3Pattern));
-            else
-                painter.setBrush(QBrush(color));
-
-            painter.drawPie(0, 0, pieSize, pieSize, int(startAngle*16), int(angle*16));
-
-            startAngle += angle;
-        }
-    }
-    painter.restore();
-
-    for (row = 0; row < model()->rowCount(rootIndex()); ++row) {
-        QModelIndex index = model()->index(row, 1, rootIndex());
-        double value = model()->data(index).toDouble();
-
-        if (value > 0.0) {
-            QModelIndex labelIndex = model()->index(row, 0, rootIndex());
-
-            QStyleOptionViewItem option;
-            initViewItemOption(&option);
-
-            option.rect = visualRect(labelIndex);
-            if (selections->isSelected(labelIndex))
-                option.state |= QStyle::State_Selected;
-            if (currentIndex() == labelIndex)
-                option.state |= QStyle::State_HasFocus;
-            itemDelegate()->paint(&painter, option, labelIndex);
-        }
-    }
-}
-
-void PieView::resizeEvent(QResizeEvent * /* event */)
-{
-    updateGeometries();
-}
-
-int PieView::rows(const QModelIndex &index) const
-{
-    return model()->rowCount(model()->parent(index));
-}
-
-void PieView::rowsInserted(const QModelIndex &parent, int start, int end)
-{
-    for (int row = start; row <= end; ++row) {
-        QModelIndex index = model()->index(row, 1, rootIndex());
-        double value = model()->data(index).toDouble();
-
-        if (value > 0.0) {
-            totalValue += value;
-            ++validItems;
-        }
-    }
-
-    QAbstractItemView::rowsInserted(parent, start, end);
-}
-
-void PieView::rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end)
-{
-    for (int row = start; row <= end; ++row) {
-        QModelIndex index = model()->index(row, 1, rootIndex());
-        double value = model()->data(index).toDouble();
-        if (value > 0.0) {
-            totalValue -= value;
-            --validItems;
-        }
-    }
-
-    QAbstractItemView::rowsAboutToBeRemoved(parent, start, end);
-}
-
-void PieView::scrollContentsBy(int dx, int dy)
-{
-    viewport()->scroll(dx, dy);
-}
-
-void PieView::scrollTo(const QModelIndex &index, ScrollHint)
-{
-    QRect area = viewport()->rect();
-    QRect rect = visualRect(index);
-
-    if (rect.left() < area.left()) {
-        horizontalScrollBar()->setValue(
-            horizontalScrollBar()->value() + rect.left() - area.left());
-    } else if (rect.right() > area.right()) {
-        horizontalScrollBar()->setValue(
-            horizontalScrollBar()->value() + qMin(
-                rect.right() - area.right(), rect.left() - area.left()));
-    }
-
-    if (rect.top() < area.top()) {
-        verticalScrollBar()->setValue(
-            verticalScrollBar()->value() + rect.top() - area.top());
-    } else if (rect.bottom() > area.bottom()) {
-        verticalScrollBar()->setValue(
-            verticalScrollBar()->value() + qMin(
-                rect.bottom() - area.bottom(), rect.top() - area.top()));
-    }
-
-    update();
-}
-
-/*
-    Find the indices corresponding to the extent of the selection.
-*/
-
-void PieView::setSelection(const QRect &rect, QItemSelectionModel::SelectionFlags command)
-{
-    // Use content widget coordinates because we will use the itemRegion()
-    // function to check for intersections.
-
-    QRect contentsRect = rect.translated(
-                            horizontalScrollBar()->value(),
-                            verticalScrollBar()->value()).normalized();
-
-    int rows = model()->rowCount(rootIndex());
-    int columns = model()->columnCount(rootIndex());
-    QModelIndexList indexes;
-
-    for (int row = 0; row < rows; ++row) {
-        for (int column = 0; column < columns; ++column) {
-            QModelIndex index = model()->index(row, column, rootIndex());
-            QRegion region = itemRegion(index);
-            if (region.intersects(contentsRect))
-                indexes.append(index);
-        }
-    }
-
-    if (indexes.size() > 0) {
-        int firstRow = indexes.at(0).row();
-        int lastRow = firstRow;
-        int firstColumn = indexes.at(0).column();
-        int lastColumn = firstColumn;
-
-        for (int i = 1; i < indexes.size(); ++i) {
-            firstRow = qMin(firstRow, indexes.at(i).row());
-            lastRow = qMax(lastRow, indexes.at(i).row());
-            firstColumn = qMin(firstColumn, indexes.at(i).column());
-            lastColumn = qMax(lastColumn, indexes.at(i).column());
-        }
-
-        QItemSelection selection(
-            model()->index(firstRow, firstColumn, rootIndex()),
-            model()->index(lastRow, lastColumn, rootIndex()));
-        selectionModel()->select(selection, command);
-    } else {
-        QModelIndex noIndex;
-        QItemSelection selection(noIndex, noIndex);
-        selectionModel()->select(selection, command);
-    }
-
-    update();
-}
-
-void PieView::updateGeometries()
-{
-    horizontalScrollBar()->setPageStep(viewport()->width());
-    horizontalScrollBar()->setRange(0, qMax(0, 2 * totalSize - viewport()->width()));
-    verticalScrollBar()->setPageStep(viewport()->height());
-    verticalScrollBar()->setRange(0, qMax(0, totalSize - viewport()->height()));
-}
-
-int PieView::verticalOffset() const
-{
-    return verticalScrollBar()->value();
-}
-
-/*
-    Returns the position of the item in viewport coordinates.
-*/
-
-QRect PieView::visualRect(const QModelIndex &index) const
-{
-    QRect rect = itemRect(index);
-    if (!rect.isValid())
-        return rect;
-
-    return QRect(rect.left() - horizontalScrollBar()->value(),
-                 rect.top() - verticalScrollBar()->value(),
-                 rect.width(), rect.height());
-}
-
-/*
-    Returns a region corresponding to the selection in viewport coordinates.
-*/
-
-QRegion PieView::visualRegionForSelection(const QItemSelection &selection) const
-{
-    int ranges = selection.count();
-
-    if (ranges == 0)
-        return QRect();
-
-    QRegion region;
-    for (int i = 0; i < ranges; ++i) {
-        const QItemSelectionRange &range = selection.at(i);
-        for (int row = range.top(); row <= range.bottom(); ++row) {
-            for (int col = range.left(); col <= range.right(); ++col) {
-                QModelIndex index = model()->index(row, col, rootIndex());
-                region += visualRect(index);
-            }
-        }
-    }
-    return region;
-}
diff --git a/examples/widgets/itemviews/chart/pieview.h b/examples/widgets/itemviews/chart/pieview.h
deleted file mode 100644
index 19c4a18ed0..0000000000
--- a/examples/widgets/itemviews/chart/pieview.h
+++ /dev/null
@@ -1,66 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-#ifndef PIEVIEW_H
-#define PIEVIEW_H
-
-#include <QAbstractItemView>
-
-//! [0]
-class PieView : public QAbstractItemView
-{
-    Q_OBJECT
-
-public:
-    PieView(QWidget *parent = nullptr);
-
-    QRect visualRect(const QModelIndex &index) const override;
-    void scrollTo(const QModelIndex &index, ScrollHint hint = EnsureVisible) override;
-    QModelIndex indexAt(const QPoint &point) const override;
-
-protected slots:
-    void dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight,
-                     const QList<int> &roles = QList<int>()) override;
-    void rowsInserted(const QModelIndex &parent, int start, int end) override;
-    void rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end) override;
-
-protected:
-    bool edit(const QModelIndex &index, EditTrigger trigger, QEvent *event) override;
-    QModelIndex moveCursor(QAbstractItemView::CursorAction cursorAction,
-                           Qt::KeyboardModifiers modifiers) override;
-
-    int horizontalOffset() const override;
-    int verticalOffset() const override;
-
-    bool isIndexHidden(const QModelIndex &index) const override;
-
-    void setSelection(const QRect&, QItemSelectionModel::SelectionFlags command) override;
-
-    void mousePressEvent(QMouseEvent *event) override;
-
-    void mouseMoveEvent(QMouseEvent *event) override;
-    void mouseReleaseEvent(QMouseEvent *event) override;
-
-    void paintEvent(QPaintEvent *event) override;
-    void resizeEvent(QResizeEvent *event) override;
-    void scrollContentsBy(int dx, int dy) override;
-
-    QRegion visualRegionForSelection(const QItemSelection &selection) const override;
-
-private:
-    QRect itemRect(const QModelIndex &item) const;
-    QRegion itemRegion(const QModelIndex &index) const;
-    int rows(const QModelIndex &index = QModelIndex()) const;
-    void updateGeometries() override;
-
-    int margin = 0;
-    int totalSize = 300;
-    int pieSize = totalSize - 2 * margin;
-    int validItems = 0;
-    double totalValue = 0.0;
-    QRubberBand *rubberBand = nullptr;
-    QPoint origin;
-};
-//! [0]
-
-#endif // PIEVIEW_H
diff --git a/examples/widgets/itemviews/chart/qtdata.cht b/examples/widgets/itemviews/chart/qtdata.cht
deleted file mode 100644
index 6386246c4b..0000000000
--- a/examples/widgets/itemviews/chart/qtdata.cht
+++ /dev/null
@@ -1,14 +0,0 @@
-Scientific Research,21,#99e600
-Engineering & Design,18,#99cc00
-Automotive,14,#99b300
-Aerospace,13,#9f991a
-Automation & Machine Tools,13,#a48033
-Medical & Bioinformatics,13,#a9664d
-Imaging & Special Effects,12,#ae4d66
-Defense,11,#b33380
-Test & Measurement Systems,9,#a64086
-Oil & Gas,9,#994d8d
-Entertainment & Broadcasting,7,#8d5a93
-Financial,6,#806699
-Consumer Electronics,4,#8073a6
-Other,38,#8080b3
diff --git a/examples/widgets/itemviews/itemviews.pro b/examples/widgets/itemviews/itemviews.pro
index 3f941679c7..802920952e 100644
--- a/examples/widgets/itemviews/itemviews.pro
+++ b/examples/widgets/itemviews/itemviews.pro
@@ -1,7 +1,6 @@
 TEMPLATE      = subdirs
 SUBDIRS       = addressbook \
                 basicsortfiltermodel \
-                chart \
                 coloreditorfactory \
                 combowidgetmapper \
                 customsortfiltermodel \