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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** 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, 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QT_NO_DIRECTFB
#include "qdirectfbscreen.h"
#include "qdirectfbpaintdevice.h"
#include "qdirectfbpaintengine.h"
QDirectFBPaintDevice::QDirectFBPaintDevice(QDirectFBScreen *scr)
: QCustomRasterPaintDevice(0), dfbSurface(0), lockedImage(0), screen(scr),
bpl(-1), lockFlgs(DFBSurfaceLockFlags(0)), mem(0), engine(0),
imageFormat(QImage::Format_Invalid)
{}
QDirectFBPaintDevice::~QDirectFBPaintDevice()
{
delete lockedImage;
delete engine;
}
IDirectFBSurface *QDirectFBPaintDevice::directFBSurface() const
{
return dfbSurface;
}
void QDirectFBPaintDevice::lockDirectFB(DFBSurfaceLockFlags flags)
{
if (!(lockFlgs & flags)) {
if (lockFlgs)
unlockDirectFB();
mem = QDirectFBScreen::lockSurface(dfbSurface, flags, &bpl);
Q_ASSERT(mem);
const QSize s = size();
lockedImage = new QImage(mem, s.width(), s.height(), bpl,
QDirectFBScreen::getImageFormat(dfbSurface));
lockFlgs = flags;
}
}
void QDirectFBPaintDevice::unlockDirectFB()
{
if (!lockedImage || !QDirectFBScreen::instance())
return;
dfbSurface->Unlock(dfbSurface);
delete lockedImage;
lockedImage = 0;
mem = 0;
lockFlgs = DFBSurfaceLockFlags(0);
}
void *QDirectFBPaintDevice::memory() const
{
return mem;
}
QImage::Format QDirectFBPaintDevice::format() const
{
return imageFormat;
}
int QDirectFBPaintDevice::bytesPerLine() const
{
if (bpl == -1) {
// Can only get the stride when we lock the surface
Q_ASSERT(!lockedImage);
QDirectFBPaintDevice* that = const_cast<QDirectFBPaintDevice*>(this);
that->lockDirectFB(DSLF_READ|DSLF_WRITE);
Q_ASSERT(bpl != -1);
}
return bpl;
}
QSize QDirectFBPaintDevice::size() const
{
int w, h;
dfbSurface->GetSize(dfbSurface, &w, &h);
return QSize(w, h);
}
int QDirectFBPaintDevice::metric(QPaintDevice::PaintDeviceMetric metric) const
{
if (!dfbSurface)
return 0;
switch (metric) {
case QPaintDevice::PdmWidth:
case QPaintDevice::PdmHeight:
return (metric == PdmWidth ? size().width() : size().height());
case QPaintDevice::PdmWidthMM:
return (size().width() * 1000) / dotsPerMeterX();
case QPaintDevice::PdmHeightMM:
return (size().height() * 1000) / dotsPerMeterY();
case QPaintDevice::PdmPhysicalDpiX:
case QPaintDevice::PdmDpiX:
return (dotsPerMeterX() * 254) / 10000; // 0.0254 meters-per-inch
case QPaintDevice::PdmPhysicalDpiY:
case QPaintDevice::PdmDpiY:
return (dotsPerMeterY() * 254) / 10000; // 0.0254 meters-per-inch
case QPaintDevice::PdmDepth:
return QDirectFBScreen::depth(imageFormat);
case QPaintDevice::PdmNumColors: {
if (lockedImage)
return lockedImage->numColors();
DFBResult result;
IDirectFBPalette *palette = 0;
unsigned int numColors = 0;
result = dfbSurface->GetPalette(dfbSurface, &palette);
if ((result != DFB_OK) || !palette)
return 0;
result = palette->GetSize(palette, &numColors);
palette->Release(palette);
if (result != DFB_OK)
return 0;
return numColors;
}
default:
qCritical("QDirectFBPaintDevice::metric(): Unhandled metric!");
return 0;
}
}
QPaintEngine *QDirectFBPaintDevice::paintEngine() const
{
return engine;
}
#endif
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