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path: root/src/plugins/platforms/directfb/qdirectfbbackingstore.cpp
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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** 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 "qdirectfbbackingstore.h"
#include "qdirectfbintegration.h"
#include "qdirectfbblitter.h"
#include "qdirectfbconvenience.h"
#include "qdirectfbwindow.h"
#include <private/qpixmap_blitter_p.h>

#include <QtCore/qdebug.h>

QT_BEGIN_NAMESPACE

QDirectFbBackingStore::QDirectFbBackingStore(QWindow *window)
    : QPlatformBackingStore(window), m_pixmap(0), m_pmdata(0)
{
    IDirectFBWindow *dfbWindow = static_cast<QDirectFbWindow *>(window->handle())->dfbWindow();
    dfbWindow->GetSurface(dfbWindow, m_dfbSurface.outPtr());

//WRONGSIZE
    QDirectFbBlitter *blitter = new QDirectFbBlitter(window->size(), m_dfbSurface.data());
    m_pmdata = new QDirectFbBlitterPlatformPixmap;
    m_pmdata->setBlittable(blitter);
    m_pixmap.reset(new QPixmap(m_pmdata));
}

QPaintDevice *QDirectFbBackingStore::paintDevice()
{
    return m_pixmap.data();
}

void QDirectFbBackingStore::flush(QWindow *, const QRegion &region, const QPoint &offset)
{
    m_pmdata->blittable()->unlock();

    QVector<QRect> rects = region.rects();
    for (int i = 0 ; i < rects.size(); i++) {
        const QRect rect = rects.at(i);
        DFBRegion dfbReg = { rect.x() + offset.x(),rect.y() + offset.y(),rect.right() + offset.x(),rect.bottom() + offset.y()};
        m_dfbSurface->Flip(m_dfbSurface.data(), &dfbReg, DFBSurfaceFlipFlags(DSFLIP_BLIT|DSFLIP_ONSYNC));
    }
}

void QDirectFbBackingStore::resize(const QSize &size, const QRegion& reg)
{
    QDirectFbBlitter *blitter = new QDirectFbBlitter(size, m_dfbSurface.data());
    m_pmdata->setBlittable(blitter);
}

static inline void scrollSurface(IDirectFBSurface *surface, const QRect &r, int dx, int dy)
{
    const DFBRectangle rect = { r.x(), r.y(), r.width(), r.height() };
    surface->Blit(surface, surface, &rect, r.x() + dx, r.y() + dy);
    const DFBRegion region = { rect.x + dx, rect.y + dy, r.right() + dx, r.bottom() + dy };
    surface->Flip(surface, &region, DFBSurfaceFlipFlags(DSFLIP_BLIT));
}

bool QDirectFbBackingStore::scroll(const QRegion &area, int dx, int dy)
{
    m_pmdata->blittable()->unlock();

    if (!m_dfbSurface || area.isEmpty())
        return false;
    m_dfbSurface->SetBlittingFlags(m_dfbSurface.data(), DSBLIT_NOFX);
    if (area.rectCount() == 1) {
        scrollSurface(m_dfbSurface.data(), area.boundingRect(), dx, dy);
    } else {
        const QVector<QRect> rects = area.rects();
        const int n = rects.size();
        for (int i=0; i<n; ++i) {
            scrollSurface(m_dfbSurface.data(), rects.at(i), dx, dy);
        }
    }
    return true;
}

void QDirectFbBackingStore::beginPaint(const QRegion &region)
{
    Q_UNUSED(region);
}

void QDirectFbBackingStore::endPaint(const QRegion &region)
{
    Q_UNUSED(region);
}

QT_END_NAMESPACE