diff options
Diffstat (limited to 'src/plugins/gfxdrivers/directfb/qdirectfbpaintdevice.cpp')
| -rw-r--r-- | src/plugins/gfxdrivers/directfb/qdirectfbpaintdevice.cpp | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/src/plugins/gfxdrivers/directfb/qdirectfbpaintdevice.cpp b/src/plugins/gfxdrivers/directfb/qdirectfbpaintdevice.cpp new file mode 100644 index 0000000000..10f1bb3f46 --- /dev/null +++ b/src/plugins/gfxdrivers/directfb/qdirectfbpaintdevice.cpp @@ -0,0 +1,221 @@ +/**************************************************************************** +** +** Copyright (C) 2011 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. +** +** $QT_BEGIN_LICENSE:LGPL$ +** 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. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qdirectfbscreen.h" +#include "qdirectfbpaintdevice.h" +#include "qdirectfbpaintengine.h" + +#ifndef QT_NO_QWS_DIRECTFB + +QT_BEGIN_NAMESPACE + +QDirectFBPaintDevice::QDirectFBPaintDevice(QDirectFBScreen *scr) + : QCustomRasterPaintDevice(0), dfbSurface(0), screen(scr), + bpl(-1), lockFlgs(DFBSurfaceLockFlags(0)), mem(0), engine(0), imageFormat(QImage::Format_Invalid) +{ +#ifdef QT_DIRECTFB_SUBSURFACE + subSurface = 0; + syncPending = false; +#endif +} + +QDirectFBPaintDevice::~QDirectFBPaintDevice() +{ + if (QDirectFBScreen::instance()) { + unlockSurface(); +#ifdef QT_DIRECTFB_SUBSURFACE + releaseSubSurface(); +#endif + if (dfbSurface) { + screen->releaseDFBSurface(dfbSurface); + } + } + delete engine; +} + +IDirectFBSurface *QDirectFBPaintDevice::directFBSurface() const +{ + return dfbSurface; +} + +bool QDirectFBPaintDevice::lockSurface(DFBSurfaceLockFlags lockFlags) +{ + if (lockFlgs && (lockFlags & ~lockFlgs)) + unlockSurface(); + if (!mem) { + Q_ASSERT(dfbSurface); +#ifdef QT_DIRECTFB_SUBSURFACE + if (!subSurface) { + DFBResult result; + subSurface = screen->getSubSurface(dfbSurface, QRect(), QDirectFBScreen::TrackSurface, &result); + if (result != DFB_OK || !subSurface) { + DirectFBError("Couldn't create sub surface", result); + return false; + } + } + IDirectFBSurface *surface = subSurface; +#else + IDirectFBSurface *surface = dfbSurface; +#endif + Q_ASSERT(surface); + mem = QDirectFBScreen::lockSurface(surface, lockFlags, &bpl); + lockFlgs = lockFlags; + Q_ASSERT(mem); + Q_ASSERT(bpl > 0); + const QSize s = size(); + lockedImage = QImage(mem, s.width(), s.height(), bpl, + QDirectFBScreen::getImageFormat(dfbSurface)); + return true; + } +#ifdef QT_DIRECTFB_SUBSURFACE + if (syncPending) { + syncPending = false; + screen->waitIdle(); + } +#endif + return false; +} + +void QDirectFBPaintDevice::unlockSurface() +{ + if (QDirectFBScreen::instance() && lockFlgs) { +#ifdef QT_DIRECTFB_SUBSURFACE + IDirectFBSurface *surface = subSurface; +#else + IDirectFBSurface *surface = dfbSurface; +#endif + if (surface) { + surface->Unlock(surface); + lockFlgs = static_cast<DFBSurfaceLockFlags>(0); + mem = 0; + } + } +} + +void *QDirectFBPaintDevice::memory() const +{ + return mem; +} + +QImage::Format QDirectFBPaintDevice::format() const +{ + return imageFormat; +} + +int QDirectFBPaintDevice::bytesPerLine() const +{ + Q_ASSERT(!mem || 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.isNull()) + return lockedImage.colorCount(); + + 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; +} + +#ifdef QT_DIRECTFB_SUBSURFACE +void QDirectFBPaintDevice::releaseSubSurface() +{ + Q_ASSERT(QDirectFBScreen::instance()); + if (subSurface) { + unlockSurface(); + screen->releaseDFBSurface(subSurface); + subSurface = 0; + } +} +#endif + +QT_END_NAMESPACE + +#endif // QT_NO_QWS_DIRECTFB |