BlackBerry: QBBCursor implementation

Implementation of QBBCursor, a QPlatformCursor subclass. Due to the lack of a
proper cursor API from the underlying OS, this class only caches the current
cursor position to make sure that the QCursor class works properly.

Backport from qt5 290ed7f8fafd67197f773454223410bbe57fc4d3

Change-Id: I1bb4b2b416579641d03ca5611e335322a8d81ae2
Reviewed-by: Bernd Weimer <bweimer@rim.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>

6 files changed, 156 insertions, 3 deletions

diff --git a/src/plugins/platforms/blackberry/blackberry.pro b/src/plugins/platforms/blackberry/blackberry.pro
index 6c34583..28a2bf6 100644
--- a/src/plugins/platforms/blackberry/blackberry.pro
+++ b/src/plugins/platforms/blackberry/blackberry.pro
@@ -31,7 +31,8 @@ SOURCES =   main.cpp \
             qbbscreeneventhandler.cpp \
             qbbabstractvirtualkeyboard.cpp \
             qbbnativeinterface.cpp \
-            qbbbuttoneventnotifier.cpp
+            qbbbuttoneventnotifier.cpp \
+            qbbcursor.cpp
 
 HEADERS =   qbbbuffer.h \
             qbbscreeneventthread.h \
@@ -51,7 +52,8 @@ HEADERS =   qbbbuffer.h \
             qbbscreeneventhandler.h \
             qbbabstractvirtualkeyboard.h \
             qbbnativeinterface.h \
-            qbbbuttoneventnotifier.h
+            qbbbuttoneventnotifier.h \
+            qbbcursor.h
 
 blackberry {
     SOURCES += qbbbpseventfilter.cpp \
diff --git a/src/plugins/platforms/blackberry/qbbcursor.cpp b/src/plugins/platforms/blackberry/qbbcursor.cpp
new file mode 100644
index 0000000..70f0f05
--- /dev/null
+++ b/src/plugins/platforms/blackberry/qbbcursor.cpp
@@ -0,0 +1,74 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 - 2012 Research In Motion <blackberry-qt@qnx.com>
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the plugins 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 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 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, 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.
+**
+** 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.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qbbcursor.h"
+
+#include <QDebug>
+
+QT_BEGIN_NAMESPACE
+
+QBBCursor::QBBCursor(QPlatformScreen *screen) : QPlatformCursor(screen)
+{
+}
+
+void QBBCursor::changeCursor(QCursor *widgetCursor, QWidget *widget)
+{
+    Q_UNUSED(widgetCursor);
+    Q_UNUSED(widget);
+}
+
+void QBBCursor::setPos(const QPoint &pos)
+{
+#ifdef QBBCURSOR_DEBUG
+    qDebug() << "QBBCursor::setPos -" << pos;
+#endif
+    mPos = pos;
+}
+
+QPoint QBBCursor::pos() const
+{
+#ifdef QBBCURSOR_DEBUG
+    qDebug() << "QBBCursor::pos -" << mPos;
+#endif
+    return mPos;
+}
+
+QT_END_NAMESPACE
diff --git a/src/plugins/platforms/blackberry/qbbcursor.h b/src/plugins/platforms/blackberry/qbbcursor.h
new file mode 100644
index 0000000..fb58f70
--- /dev/null
+++ b/src/plugins/platforms/blackberry/qbbcursor.h
@@ -0,0 +1,63 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 - 2012 Research In Motion <blackberry-qt@qnx.com>
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the plugins 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 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 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, 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.
+**
+** 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.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QBBCURSOR_H
+#define QBBCURSOR_H
+
+#include <qplatformcursor_qpa.h>
+
+QT_BEGIN_NAMESPACE
+
+class QBBCursor : public QPlatformCursor
+{
+public:
+    QBBCursor(QPlatformScreen *screen);
+
+    void changeCursor(QCursor *widgetCursor, QWidget *widget);
+    void setPos(const QPoint &pos);
+
+    QPoint pos() const;
+
+private:
+    QPoint mPos;
+};
+
+#endif // QBBCURSOR_H
diff --git a/src/plugins/platforms/blackberry/qbbscreen.cpp b/src/plugins/platforms/blackberry/qbbscreen.cpp
index e62b391..091c044 100644
--- a/src/plugins/platforms/blackberry/qbbscreen.cpp
+++ b/src/plugins/platforms/blackberry/qbbscreen.cpp
@@ -44,6 +44,7 @@
 #include "qbbscreen.h"
 #include "qbbrootwindow.h"
 #include "qbbwindow.h"
+#include "qbbcursor.h"
 
 #include <QDebug>
 #include <QtCore/QThread>
@@ -111,7 +112,8 @@ QBBScreen::QBBScreen(screen_context_t context, screen_display_t display, int scr
       mUsingOpenGL(false),
       mPrimaryDisplay(screenIndex == 0),
       mKeyboardHeight(0),
-      mScreenIndex(screenIndex)
+      mScreenIndex(screenIndex),
+      mCursor(new QBBCursor(this))
 {
 #if defined(QBBSCREEN_DEBUG)
     qDebug() << "QBBScreen::QBBScreen";
@@ -491,6 +493,11 @@ void QBBScreen::onWindowPost(QBBWindow* window)
     }
 }
 
+QPlatformCursor * QBBScreen::cursor() const
+{
+    return mCursor;
+}
+
 void QBBScreen::keyboardHeightChanged(int height)
 {
     if (height == mKeyboardHeight)
diff --git a/src/plugins/platforms/blackberry/qbbscreen.h b/src/plugins/platforms/blackberry/qbbscreen.h
index ce5ea78..de92836 100644
--- a/src/plugins/platforms/blackberry/qbbscreen.h
+++ b/src/plugins/platforms/blackberry/qbbscreen.h
@@ -51,6 +51,7 @@
 QT_BEGIN_NAMESPACE
 
 class QBBWindow;
+class QPlatformCursor;
 
 class QBBScreen : public QPlatformScreen
 {
@@ -86,6 +87,8 @@ public:
 
     QSharedPointer<QBBRootWindow> rootWindow() const { return mRootWindow; }
 
+    QPlatformCursor *cursor() const;
+
 public Q_SLOTS:
     void setRotation(int rotation);
     void newWindowCreated(screen_window_t window);
@@ -122,6 +125,8 @@ private:
     QList<screen_window_t> mOverlays;
     int mScreenIndex;
 
+    QPlatformCursor *mCursor;
+
     bool isPrimaryDisplay() { return mPrimaryDisplay; }
 };
 
diff --git a/src/plugins/platforms/blackberry/qbbscreeneventhandler.cpp b/src/plugins/platforms/blackberry/qbbscreeneventhandler.cpp
index f408a49..6e315d2 100644
--- a/src/plugins/platforms/blackberry/qbbscreeneventhandler.cpp
+++ b/src/plugins/platforms/blackberry/qbbscreeneventhandler.cpp
@@ -409,6 +409,8 @@ void QBBScreenEventHandler::handleTouchEvent(screen_event_t event, int qnxType)
         qFatal("QBB: failed to query event position, errno=%d", errno);
     }
 
+    QCursor::setPos(pos[0], pos[1]);
+
     // get window coordinates of touch
     errno = 0;
     int windowPos[2];