1 files changed, 166 insertions, 0 deletions
diff --git a/src/plugins/platforms/blackberry/qbbrasterbackingstore.cpp b/src/plugins/platforms/blackberry/qbbrasterbackingstore.cpp
new file mode 100644
index 0000000000..405e09260f
--- /dev/null
+++ b/src/plugins/platforms/blackberry/qbbrasterbackingstore.cpp
@@ -0,0 +1,166 @@
+/***************************************************************************
+**
+** Copyright (C) 2011 - 2012 Research In Motion
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the plugins 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 "qbbrasterbackingstore.h"
+#include "qbbwindow.h"
+
+#include <QtCore/QDebug>
+
+#include <errno.h>
+
+QT_BEGIN_NAMESPACE
+
+QBBRasterBackingStore::QBBRasterBackingStore(QWindow *window)
+    : QPlatformBackingStore(window)
+{
+#if defined(QBBRASTERBACKINGSTORE_DEBUG)
+    qDebug() << "QBBRasterBackingStore::QBBRasterBackingStore - w=" << window;
+#endif
+
+    // save platform window associated with widget
+    m_platformWindow = static_cast<QBBWindow*>(window->handle());
+}
+
+QBBRasterBackingStore::~QBBRasterBackingStore()
+{
+#if defined(QBBRasterBackingStore_DEBUG)
+    qDebug() << "QBBRasterBackingStore::~QBBRasterBackingStore - w=" << window();
+#endif
+}
+
+QPaintDevice *QBBRasterBackingStore::paintDevice()
+{
+    return m_platformWindow->renderBuffer().image();
+}
+
+void QBBRasterBackingStore::flush(QWindow *window, const QRegion &region, const QPoint &offset)
+{
+    Q_UNUSED(window);
+    Q_UNUSED(offset);
+
+#if defined(QBBRASTERBACKINGSTORE_DEBUG)
+    qDebug() << "QBBRasterBackingStore::flush - w=" << this->window();
+#endif
+
+    // visit all pending scroll operations
+    for (int i = m_scrollOpList.size() - 1; i >= 0; i--) {
+
+        // do the scroll operation
+        ScrollOp &op = m_scrollOpList[i];
+        QRegion srcArea = op.totalArea.intersected( op.totalArea.translated(-op.dx, -op.dy) );
+        m_platformWindow->scroll(srcArea, op.dx, op.dy);
+    }
+
+    // clear all pending scroll operations
+    m_scrollOpList.clear();
+
+    // update the display with newly rendered content
+    m_platformWindow->post(region);
+}
+
+void QBBRasterBackingStore::resize(const QSize &size, const QRegion &staticContents)
+{
+    Q_UNUSED(size);
+    Q_UNUSED(staticContents);
+#if defined(QBBRASTERBACKINGSTORE_DEBUG)
+    qDebug() << "QBBRasterBackingStore::resize - w=" << window() << ", s=" << size;
+#endif
+
+    // NOTE: defer resizing window buffers until next paint as
+    // resize() can be called multiple times before a paint occurs
+}
+
+bool QBBRasterBackingStore::scroll(const QRegion &area, int dx, int dy)
+{
+#if defined(QBBRASTERBACKINGSTORE_DEBUG)
+    qDebug() << "QBBRasterBackingStore::scroll - w=" << window();
+#endif
+
+    // calculate entire region affected by scroll operation (src + dst)
+    QRegion totalArea = area.translated(dx, dy);
+    totalArea += area;
+
+    // visit all pending scroll operations
+    for (int i = m_scrollOpList.size() - 1; i >= 0; i--) {
+
+        ScrollOp &op = m_scrollOpList[i];
+        if (op.totalArea == totalArea) {
+            // same area is being scrolled again - update delta
+            op.dx += dx;
+            op.dy += dy;
+            return true;
+        } else if (op.totalArea.intersects(totalArea)) {
+            // current scroll overlaps previous scroll but is
+            // not equal in area - just paint everything
+            qWarning("QBB: pending scroll operations overlap but not equal");
+            return false;
+        }
+    }
+
+    // create new scroll operation
+    m_scrollOpList.append( ScrollOp(totalArea, dx, dy) );
+    return true;
+}
+
+void QBBRasterBackingStore::beginPaint(const QRegion &region)
+{
+    Q_UNUSED(region);
+
+#if defined(QBBRASTERBACKINGSTORE_DEBUG)
+    qDebug() << "QBBRasterBackingStore::beginPaint - w=" << window();
+#endif
+
+    // resize window buffers if surface resized
+    QSize s = window()->size();
+    if (s != m_platformWindow->bufferSize()) {
+        m_platformWindow->setBufferSize(s);
+    }
+}
+
+void QBBRasterBackingStore::endPaint(const QRegion &region)
+{
+    Q_UNUSED(region);
+#if defined(QBBRasterBackingStore_DEBUG)
+    qDebug() << "QBBRasterBackingStore::endPaint - w=" << window();
+#endif
+}
+
+QT_END_NAMESPACE