Add manual test for touch events.

Unlike qtouchevents, this provides a touch area which logs its
events and devices.

Task-number: QTBUG-40461
Change-Id: Iaaa3589dd692caf8c7078f5ed2ff1e8b2322a369
Reviewed-by: Shawn Rutledge <shawn.rutledge@digia.com>

tests/manual/manual.pro

@@ -29,6 +29,7 @@ qtabletevent \
 qtexteditlist \
 qtbug-8933 \
 qtouchevent \
+touch \
 qwidget_zorder \
 repaint \
 socketengine \

tests/manual/touch/main.cpp

+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia. For licensing terms and
+** conditions see http://qt.digia.com/licensing. For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** 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 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights. These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QApplication>
+#include <QLabel>
+#include <QMenu>
+#include <QMenuBar>
+#include <QAction>
+#include <QMainWindow>
+#include <QSplitter>
+#include <QVector>
+#include <QCommandLineOption>
+#include <QCommandLineParser>
+#include <QPlainTextEdit>
+#include <QPaintEvent>
+#include <QScreen>
+#include <QDebug>
+#include <QTextStream>
+
+QDebug operator<<(QDebug debug, const QTouchDevice *d)
+{
+    QDebugStateSaver saver(debug);
+    debug.nospace();
+    debug << "QTouchDevice(" << d->name() << ',';
+    switch (d->type()) {
+    case QTouchDevice::TouchScreen:
+        debug << "TouchScreen";
+        break;
+    case QTouchDevice::TouchPad:
+        debug << "TouchPad";
+        break;
+    }
+    debug << ", capabilities=" << d->capabilities()
+        << ", maximumTouchPoints=" << d->maximumTouchPoints() << ')';
+    return debug;
+}
+
+typedef QVector<QEvent::Type> EventTypeVector;
+
+class EventFilter : public QObject {
+    Q_OBJECT
+public:
+    explicit EventFilter(const EventTypeVector &types, QObject *p) : QObject(p), m_types(types) {}
+
+    bool eventFilter(QObject *, QEvent *) Q_DECL_OVERRIDE;
+
+signals:
+    void eventReceived(const QString &);
+
+private:
+    const EventTypeVector m_types;
+};
+
+bool EventFilter::eventFilter(QObject *o, QEvent *e)
+{
+    static int n = 0;
+    if (m_types.contains(e->type())) {
+        QString message;
+        QDebug(&message) << '#' << n++ << ' ' << o->objectName() << ' ' << e;
+        emit eventReceived(message);
+    }
+    return false;
+}
+
+class TouchTestWidget : public QWidget {
+public:
+    explicit TouchTestWidget(QWidget *parent = 0) : QWidget(parent)
+    {
+        setAttribute(Qt::WA_AcceptTouchEvents);
+    }
+
+    bool event(QEvent *event) Q_DECL_OVERRIDE
+    {
+        switch (event->type()) {
+        case QEvent::TouchBegin:
+        case QEvent::TouchUpdate:
+        case QEvent::TouchEnd:
+            event->accept();
+            return true;
+        default:
+            break;
+        }
+        return QWidget::event(event);
+    }
+};
+
+class MainWindow : public QMainWindow
+{
+    Q_OBJECT
+public:
+    MainWindow();
+    QWidget *touchWidget() const { return m_touchWidget; }
+
+public slots:
+    void appendToLog(const QString &text) { m_logTextEdit->appendPlainText(text); }
+    void dumpTouchDevices();
+
+private:
+    QWidget *m_touchWidget;
+    QPlainTextEdit *m_logTextEdit;
+};
+
+MainWindow::MainWindow()
+    : m_touchWidget(new TouchTestWidget)
+    , m_logTextEdit(new QPlainTextEdit)
+{
+    setWindowTitle(QStringLiteral("Touch Event Tester ") + QT_VERSION_STR);
+
+    setObjectName("MainWin");
+    QMenu *fileMenu = menuBar()->addMenu("File");
+    QAction *da = fileMenu->addAction(QStringLiteral("Dump devices"));
+    da->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_D));
+    connect(da, SIGNAL(triggered()), this, SLOT(dumpTouchDevices()));
+    QAction *qa = fileMenu->addAction(QStringLiteral("Quit"));
+    qa->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q));
+    connect(qa, SIGNAL(triggered()), this, SLOT(close()));
+
+    QSplitter *mainSplitter = new QSplitter(Qt::Vertical);
+
+    m_touchWidget->setObjectName(QStringLiteral("TouchWidget"));
+    const QSize screenSize = QGuiApplication::primaryScreen()->availableGeometry().size();
+    m_touchWidget->setMinimumSize(screenSize / 2);
+    mainSplitter->addWidget(m_touchWidget);
+
+    m_logTextEdit->setObjectName(QStringLiteral("LogTextEdit"));
+    m_logTextEdit->setMinimumHeight(screenSize.height() / 4);
+    mainSplitter->addWidget(m_logTextEdit);
+    setCentralWidget(mainSplitter);
+
+    dumpTouchDevices();
+}
+
+void MainWindow::dumpTouchDevices()
+{
+    QString message;
+    QDebug debug(&message);
+    const QList<const QTouchDevice *> devices = QTouchDevice::devices();
+    debug << devices.size() << "Device(s):\n";
+    for (int i = 0; i < devices.size(); ++i)
+        debug << "Device #" << i << devices.at(i) << '\n';
+    appendToLog(message);
+}
+
+int main(int argc, char *argv[])
+{
+    QApplication a(argc, argv);
+    QCommandLineParser parser;
+    parser.setApplicationDescription(QStringLiteral("Touch/Mouse tester"));
+    parser.addHelpOption();
+    const QCommandLineOption mouseMoveOption(QStringLiteral("mousemove"),
+                                             QStringLiteral("Log mouse move events"));
+    parser.addOption(mouseMoveOption);
+    const QCommandLineOption globalFilterOption(QStringLiteral("global"),
+                                             QStringLiteral("Global event filter"));
+    parser.addOption(globalFilterOption);
+    parser.process(QApplication::arguments());
+
+    MainWindow w;
+    w.show();
+    const QSize pos = QGuiApplication::primaryScreen()->availableGeometry().size() - w.size();
+    w.move(pos.width() / 2, pos.height() / 2);
+
+    EventTypeVector eventTypes;
+    eventTypes << QEvent::MouseButtonPress << QEvent::MouseButtonRelease
+        << QEvent::MouseButtonDblClick
+        << QEvent::TouchBegin << QEvent::TouchUpdate << QEvent::TouchEnd;
+    if (parser.isSet(mouseMoveOption))
+        eventTypes << QEvent::MouseMove;
+    QObject *filterTarget = parser.isSet(globalFilterOption)
+            ? static_cast<QObject *>(&a)
+            : static_cast<QObject *>(w.touchWidget());
+    EventFilter *filter = new EventFilter(eventTypes, filterTarget);
+    filterTarget->installEventFilter(filter);
+    QObject::connect(filter, SIGNAL(eventReceived(QString)), &w, SLOT(appendToLog(QString)));
+
+    return a.exec();
+}
+
+#include "main.moc"

tests/manual/touch/touch.pro

+TEMPLATE = app
+QT = core gui
+greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
+CONFIG -= app_bundle
+SOURCES += main.cpp