1 files changed, 91 insertions, 0 deletions
diff --git a/src/platformsupport/input/shared/qtouchoutputmapping.cpp b/src/platformsupport/input/shared/qtouchoutputmapping.cpp
new file mode 100644
index 0000000000..55c1dc34f4
--- /dev/null
+++ b/src/platformsupport/input/shared/qtouchoutputmapping.cpp
@@ -0,0 +1,91 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the plugins module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://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 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qtouchoutputmapping_p.h"
+#include <QFile>
+#include <QVariantMap>
+#include <QJsonDocument>
+#include <QJsonObject>
+#include <QJsonArray>
+
+QT_BEGIN_NAMESPACE
+
+bool QTouchOutputMapping::load()
+{
+    static QByteArray configFile = qgetenv("QT_QPA_EGLFS_KMS_CONFIG");
+    if (configFile.isEmpty())
+        return false;
+
+    QFile file(QString::fromUtf8(configFile));
+    if (!file.open(QFile::ReadOnly)) {
+        qWarning("touch input support: Failed to open %s", configFile.constData());
+        return false;
+    }
+
+    const QJsonDocument doc = QJsonDocument::fromJson(file.readAll());
+    if (!doc.isObject()) {
+        qWarning("touch input support: Failed to parse %s", configFile.constData());
+        return false;
+    }
+
+    // What we are interested is the virtualIndex and touchDevice properties for
+    // each element in the outputs array.
+    const QJsonArray outputs = doc.object().value(QLatin1String("outputs")).toArray();
+    for (int i = 0; i < outputs.size(); ++i) {
+        const QVariantMap output = outputs.at(i).toObject().toVariantMap();
+        if (!output.contains(QStringLiteral("touchDevice")))
+            continue;
+        if (!output.contains(QStringLiteral("virtualIndex"))) {
+            qWarning("evdevtouch: Output %d specifies touchDevice but not virtualIndex, this is wrong", i);
+            continue;
+        }
+        const QString &deviceNode = output.value(QStringLiteral("touchDevice")).toString();
+        const int screenIndex = output.value(QStringLiteral("virtualIndex")).toInt();
+        m_screenIndexTable.insert(deviceNode, screenIndex);
+    }
+
+    return true;
+}
+
+int QTouchOutputMapping::screenIndexForDeviceNode(const QString &deviceNode)
+{
+    return m_screenIndexTable.value(deviceNode, -1);
+}
+
+QT_END_NAMESPACE