1 files changed, 130 insertions, 0 deletions
diff --git a/src/plugins/platforms/eglfs/qeglfshooks.cpp b/src/plugins/platforms/eglfs/qeglfshooks.cpp
new file mode 100644
index 0000000000..2f12c61f99
--- /dev/null
+++ b/src/plugins/platforms/eglfs/qeglfshooks.cpp
@@ -0,0 +1,130 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the qmake spec 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 "qeglfshooks.h"
+#include <QLoggingCategory>
+
+QT_BEGIN_NAMESPACE
+
+Q_DECLARE_LOGGING_CATEGORY(qLcEglDevDebug)
+
+#ifdef EGLFS_PLATFORM_HOOKS
+
+QEGLDeviceIntegration *qt_egl_device_integration()
+{
+    extern QEglFSHooks *platformHooks;
+    return platformHooks;
+}
+
+#else
+
+class DeviceIntegration
+{
+public:
+    DeviceIntegration();
+    ~DeviceIntegration() { delete m_integration; }
+    QEGLDeviceIntegration *integration() { return m_integration; }
+private:
+    QEGLDeviceIntegration *m_integration;
+};
+
+Q_GLOBAL_STATIC(DeviceIntegration, deviceIntegration)
+
+DeviceIntegration::DeviceIntegration()
+{
+    QStringList pluginKeys = QEGLDeviceIntegrationFactory::keys();
+    if (!pluginKeys.isEmpty()) {
+        // Some built-in logic: Prioritize either X11 or KMS/DRM.
+        if (qEnvironmentVariableIsSet("DISPLAY")) {
+            const QString x11key = QStringLiteral("eglfs_x11");
+            if (pluginKeys.contains(x11key)) {
+                pluginKeys.removeOne(x11key);
+                pluginKeys.prepend(x11key);
+            }
+        } else {
+            const QString kmskey = QStringLiteral("eglfs_kms");
+            if (pluginKeys.contains(kmskey)) {
+                pluginKeys.removeOne(kmskey);
+                pluginKeys.prepend(kmskey);
+            }
+        }
+
+        QByteArray requested;
+
+        // The environment variable can override everything.
+        if (qEnvironmentVariableIsSet("QT_QPA_EGLFS_INTEGRATION")) {
+            requested = qgetenv("QT_QPA_EGLFS_INTEGRATION");
+        } else {
+            // Device-specific makespecs may define a preferred plugin.
+#ifdef EGLFS_PREFERRED_PLUGIN
+#define DEFAULT_PLUGIN EGLFS_PREFERRED_PLUGIN
+#define STR(s) #s
+#define STRQ(s) STR(s)
+            requested = STRQ(DEFAULT_PLUGIN);
+#endif
+        }
+
+        // Treat "none" as special. There has to be a way to indicate
+        // that plugins must be ignored when the device is known to be
+        // functional with the default, non-specialized integration.
+        if (requested != QByteArrayLiteral("none")) {
+            if (!requested.isEmpty()) {
+                QString reqStr = QString::fromLocal8Bit(requested);
+                pluginKeys.removeOne(reqStr);
+                pluginKeys.prepend(reqStr);
+            }
+            qCDebug(qLcEglDevDebug) << "EGL device integration plugin keys (sorted):" << pluginKeys;
+            while (!m_integration && !pluginKeys.isEmpty()) {
+                QString key = pluginKeys.takeFirst();
+                qCDebug(qLcEglDevDebug) << "Trying to load device EGL integration" << key;
+                m_integration = QEGLDeviceIntegrationFactory::create(key);
+            }
+        }
+    }
+
+    if (!m_integration) {
+        // Use a default, non-specialized device integration when no plugin is available.
+        // For some systems this is sufficient.
+        qCDebug(qLcEglDevDebug) << "Using base device integration";
+        m_integration = new QEGLDeviceIntegration;
+    }
+}
+
+QEGLDeviceIntegration *qt_egl_device_integration()
+{
+    return deviceIntegration()->integration();
+}
+
+#endif // EGLFS_PLATFORM_HOOKS
+
+QT_END_NAMESPACE