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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qoutputmapping_p.h"
#include <QFile>
#include <QFileInfo>
#include <QVariantMap>
#include <QJsonDocument>
#include <QJsonObject>
#include <QJsonArray>
QT_BEGIN_NAMESPACE
using namespace Qt::StringLiterals;
static QOutputMapping *s_outputMapping = nullptr;
QOutputMapping *QOutputMapping::get()
{
if (!s_outputMapping)
s_outputMapping = new QDefaultOutputMapping;
return s_outputMapping;
}
bool QOutputMapping::load()
{
return false;
}
QString QOutputMapping::screenNameForDeviceNode(const QString &deviceNode)
{
Q_UNUSED(deviceNode);
return QString();
}
#ifdef Q_OS_WEBOS
QWindow *QOutputMapping::windowForDeviceNode(const QString &deviceNode)
{
Q_UNUSED(deviceNode);
return nullptr;
}
void QOutputMapping::set(QOutputMapping *mapping)
{
if (s_outputMapping)
delete s_outputMapping;
s_outputMapping = mapping;
}
#endif // Q_OS_WEBOS
bool QDefaultOutputMapping::load()
{
static QString configFile = qEnvironmentVariable("QT_QPA_EGLFS_KMS_CONFIG");
if (configFile.isEmpty())
return false;
QFile file(configFile);
if (!file.open(QFile::ReadOnly)) {
qWarning("touch input support: Failed to open %ls", qUtf16Printable(configFile));
return false;
}
const QJsonDocument doc = QJsonDocument::fromJson(file.readAll());
if (!doc.isObject()) {
qWarning("touch input support: Failed to parse %ls", qUtf16Printable(configFile));
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("outputs"_L1).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("name"))) {
qWarning("evdevtouch: Output %d specifies touchDevice but not name, this is wrong", i);
continue;
}
QFileInfo deviceNode(output.value(QStringLiteral("touchDevice")).toString());
const QString &screenName = output.value(QStringLiteral("name")).toString();
// Key on the canonical path so that a symlinked node, e.g. one under
// /dev/input/by-id, matches the node the input handler was given.
QString key = deviceNode.canonicalFilePath();
if (key.isEmpty()) {
qWarning("touch input support: Cannot resolve touchDevice %ls of output %ls",
qUtf16Printable(deviceNode.filePath()), qUtf16Printable(screenName));
key = deviceNode.filePath();
}
m_screenTable.insert(key, screenName);
}
return true;
}
QString QDefaultOutputMapping::screenNameForDeviceNode(const QString &deviceNode)
{
const QString canonical = QFileInfo(deviceNode).canonicalFilePath();
if (!canonical.isEmpty()) {
auto it = m_screenTable.constFind(canonical);
if (it != m_screenTable.constEnd())
return *it;
}
return m_screenTable.value(deviceNode);
}
QT_END_NAMESPACE