diff options
Diffstat (limited to 'src/plugins/platforms/blackberry/qbbrasterbackingstore.cpp')
-rw-r--r-- | src/plugins/platforms/blackberry/qbbrasterbackingstore.cpp | 166 |
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 ®ion, 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 ®ion) +{ + 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 ®ion) +{ + Q_UNUSED(region); +#if defined(QBBRasterBackingStore_DEBUG) + qDebug() << "QBBRasterBackingStore::endPaint - w=" << window(); +#endif +} + +QT_END_NAMESPACE |