evdevtouch: Add hotplug support

Follow the exact same structure as evdevmouse and keyboard.

We must do monitoring via device discovery just like we do for keyboards and mice.
Otherwise the usage of touchscreens that connect via USB or can be turned on/off
independently from the board becomes troublesome.

Change-Id: I2de3b519e8d617b0612e5df486e481bbc09b9c8c
Reviewed-by: Andy Nichols <andy.nichols@theqtcompany.com>

1 files changed, 76 insertions, 0 deletions

diff --git a/src/platformsupport/input/evdevtouch/qevdevtouchmanager_p.h b/src/platformsupport/input/evdevtouch/qevdevtouchmanager_p.h
new file mode 100644
index 0000000000..bf484fd88b
--- /dev/null
+++ b/src/platformsupport/input/evdevtouch/qevdevtouchmanager_p.h
@@ -0,0 +1,76 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the QtGui module 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 The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/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.
+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QEVDEVTOUCHMANAGER_P_H
+#define QEVDEVTOUCHMANAGER_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QObject>
+#include <QHash>
+#include <QSocketNotifier>
+
+QT_BEGIN_NAMESPACE
+
+class QDeviceDiscovery;
+class QEvdevTouchScreenHandlerThread;
+
+class QEvdevTouchManager : public QObject
+{
+    Q_OBJECT
+public:
+    QEvdevTouchManager(const QString &key, const QString &spec, QObject *parent = 0);
+    ~QEvdevTouchManager();
+
+private slots:
+    void addDevice(const QString &deviceNode);
+    void removeDevice(const QString &deviceNode);
+
+private:
+    QString m_spec;
+    QDeviceDiscovery *m_deviceDiscovery;
+    QHash<QString, QEvdevTouchScreenHandlerThread *> m_activeDevices;
+};
+
+QT_END_NAMESPACE
+
+#endif // QEVDEVTOUCHMANAGER_P_H