Blackberry: Remove QtGui dependency

In the Blackberry backend, we can't depend on QtGui and especially
not on the Blackberry QPA plugin, as Cascades uses
QCoreApplication, not QGuiApplication.

All QtGui functions are replaced with a new GuiHelper class, that
internally uses BPS.

Change-Id: Ia508e8b397050676c68612340d33cdbf57041076
Reviewed-by: Adam Parco <aparco@rim.com>
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>

1 files changed, 104 insertions, 0 deletions

diff --git a/src/plugins/sensors/blackberry/bbguihelper.cpp b/src/plugins/sensors/blackberry/bbguihelper.cpp
new file mode 100644
index 00000000..b074901c
--- /dev/null
+++ b/src/plugins/sensors/blackberry/bbguihelper.cpp
@@ -0,0 +1,104 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Research In Motion
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the QtSensors module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#include "bbguihelper.h"
+
+#include <QtCore/QAbstractEventDispatcher>
+#include <QtCore/QCoreApplication>
+#include <bps/navigator.h>
+
+BbGuiHelper::BbGuiHelper(QObject *parent)
+    : QObject(parent),
+      m_currentOrientation(0),
+      m_applicationActive(true)
+{
+    // There is no API to get the current orientation or application active state at the moment.
+    // Therefore, we assume the application is active when this is called, and that the inital
+    // orientation that is set in the environment variable hasn't changed yet.
+    // These assumptions don't always hold, but it is the best we got so far.
+    // The navigator will at least inform us about updates.
+    const QByteArray orientationText = qgetenv("ORIENTATION");
+    if (!orientationText.isEmpty())
+        m_currentOrientation = orientationText.toInt();
+
+    QCoreApplication::eventDispatcher()->installNativeEventFilter(this);
+}
+
+BbGuiHelper::~BbGuiHelper()
+{
+    QCoreApplication::eventDispatcher()->removeNativeEventFilter(this);
+}
+
+int BbGuiHelper::currentOrientation() const
+{
+    return m_currentOrientation;
+}
+
+bool BbGuiHelper::applicationActive() const
+{
+    return m_applicationActive;
+}
+
+bool BbGuiHelper::nativeEventFilter(const QByteArray &eventType, void *message, long *result)
+{
+    Q_UNUSED(result);
+    Q_UNUSED(eventType);
+
+    bps_event_t * const event = static_cast<bps_event_t *>(message);
+    if (event && bps_event_get_domain(event) == navigator_get_domain()) {
+        const int code = bps_event_get_code(event);
+        if (code == NAVIGATOR_ORIENTATION) {
+            const int newOrientation = navigator_event_get_orientation_angle(event);
+            if (newOrientation != m_currentOrientation) {
+                m_currentOrientation = newOrientation;
+                emit orientationChanged();
+            }
+        } else if (code == NAVIGATOR_WINDOW_STATE) {
+            const bool appActive =
+                    (navigator_event_get_window_state(event) == NAVIGATOR_WINDOW_FULLSCREEN);
+            if (m_applicationActive != appActive) {
+                m_applicationActive = appActive;
+                emit applicationActiveChanged();
+            }
+        }
+    }
+
+    return false;
+}