diff options
Diffstat (limited to 'src/gui/painting/qgraphicssystem_runtime.cpp')
| -rw-r--r-- | src/gui/painting/qgraphicssystem_runtime.cpp | 486 |
1 files changed, 486 insertions, 0 deletions
diff --git a/src/gui/painting/qgraphicssystem_runtime.cpp b/src/gui/painting/qgraphicssystem_runtime.cpp new file mode 100644 index 0000000..1c5d944 --- /dev/null +++ b/src/gui/painting/qgraphicssystem_runtime.cpp @@ -0,0 +1,486 @@ +/**************************************************************************** +** +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtGui module 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 <private/qgraphicssystem_runtime_p.h> +#include <private/qgraphicssystem_raster_p.h> +#include <private/qgraphicssystemfactory_p.h> +#include <private/qapplication_p.h> +#include <private/qwidget_p.h> +#include <QtCore/QDebug> +#include <QtCore/QTimer> +#include <QtGui/QBitmap> + +QT_BEGIN_NAMESPACE + +static int qt_pixmap_serial = 0; + +#define READBACK(f) \ + m_graphicsSystem->decreaseMemoryUsage(memoryUsage()); \ + f \ + readBackInfo(); \ + m_graphicsSystem->increaseMemoryUsage(memoryUsage()); \ + + +class QDeferredGraphicsSystemChange : public QObject +{ + Q_OBJECT + +public: + QDeferredGraphicsSystemChange(QRuntimeGraphicsSystem *gs, const QString& graphicsSystemName) + : m_graphicsSystem(gs), m_graphicsSystemName(graphicsSystemName) + { + } + + void launch() + { + QTimer::singleShot(0, this, SLOT(doChange())); + } + +private slots: + + void doChange() + { + m_graphicsSystem->setGraphicsSystem(m_graphicsSystemName); + deleteLater(); + } + +private: + + QRuntimeGraphicsSystem *m_graphicsSystem; + QString m_graphicsSystemName; +}; + +QRuntimePixmapData::QRuntimePixmapData(const QRuntimeGraphicsSystem *gs, PixelType type) + : QPixmapData(type, RuntimeClass), m_graphicsSystem(gs) +{ + setSerialNumber(++qt_pixmap_serial); +} + +QRuntimePixmapData::~QRuntimePixmapData() +{ + m_graphicsSystem->removePixmapData(this); + delete m_data; +} + +void QRuntimePixmapData::readBackInfo() +{ + w = m_data->width(); + h = m_data->height(); + d = m_data->depth(); + is_null = m_data->isNull(); +} + + +QPixmapData *QRuntimePixmapData::createCompatiblePixmapData() const +{ + QRuntimePixmapData *rtData = new QRuntimePixmapData(m_graphicsSystem, pixelType()); + rtData->m_data = m_data->createCompatiblePixmapData(); + return rtData; +} + + +void QRuntimePixmapData::resize(int width, int height) +{ + READBACK( + m_data->resize(width, height); + ) +} + + +void QRuntimePixmapData::fromImage(const QImage &image, + Qt::ImageConversionFlags flags) +{ + READBACK( + m_data->fromImage(image, flags); + ) +} + + +bool QRuntimePixmapData::fromFile(const QString &filename, const char *format, + Qt::ImageConversionFlags flags) +{ + bool success(false); + READBACK( + success = m_data->fromFile(filename, format, flags); + ) + return success; +} + +bool QRuntimePixmapData::fromData(const uchar *buffer, uint len, const char *format, + Qt::ImageConversionFlags flags) +{ + bool success(false); + READBACK( + success = m_data->fromData(buffer, len, format, flags); + ) + return success; +} + + +void QRuntimePixmapData::copy(const QPixmapData *data, const QRect &rect) +{ + if (data->runtimeData()) { + READBACK( + m_data->copy(data->runtimeData(), rect); + ) + } else { + READBACK( + m_data->copy(data, rect); + ) + } +} + +bool QRuntimePixmapData::scroll(int dx, int dy, const QRect &rect) +{ + return m_data->scroll(dx, dy, rect); +} + + +int QRuntimePixmapData::metric(QPaintDevice::PaintDeviceMetric metric) const +{ + return m_data->metric(metric); +} + +void QRuntimePixmapData::fill(const QColor &color) +{ + return m_data->fill(color); +} + +QBitmap QRuntimePixmapData::mask() const +{ + return m_data->mask(); +} + +void QRuntimePixmapData::setMask(const QBitmap &mask) +{ + READBACK( + m_data->setMask(mask); + ) +} + +bool QRuntimePixmapData::hasAlphaChannel() const +{ + return m_data->hasAlphaChannel(); +} + +QPixmap QRuntimePixmapData::transformed(const QTransform &matrix, + Qt::TransformationMode mode) const +{ + return m_data->transformed(matrix, mode); +} + +void QRuntimePixmapData::setAlphaChannel(const QPixmap &alphaChannel) +{ + READBACK( + m_data->setAlphaChannel(alphaChannel); + ) +} + +QPixmap QRuntimePixmapData::alphaChannel() const +{ + return m_data->alphaChannel(); +} + +QImage QRuntimePixmapData::toImage() const +{ + return m_data->toImage(); +} + +QPaintEngine* QRuntimePixmapData::paintEngine() const +{ + return m_data->paintEngine(); +} + +QImage* QRuntimePixmapData::buffer() +{ + return m_data->buffer(); +} + +#if defined(Q_OS_SYMBIAN) +void* QRuntimePixmapData::toNativeType(NativeType type) +{ + return m_data->toNativeType(type); +} + +void QRuntimePixmapData::fromNativeType(void *pixmap, NativeType type) +{ + m_data->fromNativeType(pixmap, type); + readBackInfo(); +} +#endif + +QPixmapData* QRuntimePixmapData::runtimeData() const +{ + return m_data; +} + +uint QRuntimePixmapData::memoryUsage() const +{ + if(is_null || d == 0) + return 0; + return w * h * (d / 8); +} + + +QRuntimeWindowSurface::QRuntimeWindowSurface(const QRuntimeGraphicsSystem *gs, QWidget *window) + : QWindowSurface(window), m_windowSurface(0), m_pendingWindowSurface(0), m_graphicsSystem(gs) +{ + +} + +QRuntimeWindowSurface::~QRuntimeWindowSurface() +{ + m_graphicsSystem->removeWindowSurface(this); + delete m_windowSurface; +} + +QPaintDevice *QRuntimeWindowSurface::paintDevice() +{ + return m_windowSurface->paintDevice(); +} + +void QRuntimeWindowSurface::flush(QWidget *widget, const QRegion ®ion, + const QPoint &offset) +{ + m_windowSurface->flush(widget, region, offset); + + int destroyPolicy = m_graphicsSystem->windowSurfaceDestroyPolicy(); + if(m_pendingWindowSurface && + destroyPolicy == QRuntimeGraphicsSystem::DestroyAfterFirstFlush) { +#ifdef QT_DEBUG + qDebug() << "QRuntimeWindowSurface::flush() - destroy pending window surface"; +#endif + delete m_pendingWindowSurface; + m_pendingWindowSurface = 0; + } +} + +void QRuntimeWindowSurface::setGeometry(const QRect &rect) +{ + m_graphicsSystem->decreaseMemoryUsage(memoryUsage()); + m_windowSurface->setGeometry(rect); + m_graphicsSystem->increaseMemoryUsage(memoryUsage()); +} + +bool QRuntimeWindowSurface::scroll(const QRegion &area, int dx, int dy) +{ + return m_windowSurface->scroll(area, dx, dy); +} + +void QRuntimeWindowSurface::beginPaint(const QRegion &rgn) +{ + m_windowSurface->beginPaint(rgn); +} + +void QRuntimeWindowSurface::endPaint(const QRegion &rgn) +{ + m_windowSurface->endPaint(rgn); +} + +QImage* QRuntimeWindowSurface::buffer(const QWidget *widget) +{ + return m_windowSurface->buffer(widget); +} + +QPixmap QRuntimeWindowSurface::grabWidget(const QWidget *widget, const QRect& rectangle) const +{ + return m_windowSurface->grabWidget(widget, rectangle); +} + +QPoint QRuntimeWindowSurface::offset(const QWidget *widget) const +{ + return m_windowSurface->offset(widget); +} + +uint QRuntimeWindowSurface::memoryUsage() const +{ + QPaintDevice *pdev = m_windowSurface->paintDevice(); + if (pdev && pdev->depth() != 0) + return pdev->width() * pdev->height() * (pdev->depth()/8); + + return 0; +} + +QRuntimeGraphicsSystem::QRuntimeGraphicsSystem() + : m_memoryUsage(0), m_windowSurfaceDestroyPolicy(DestroyImmediately), + m_graphicsSystem(0), m_graphicsSystemChangeMemoryLimit(0) +{ + QApplicationPrivate::graphics_system_name = QLatin1String("runtime"); + +#ifdef Q_OS_SYMBIAN + m_graphicsSystemName = QLatin1String("openvg"); + m_windowSurfaceDestroyPolicy = DestroyAfterFirstFlush; +#else + m_graphicsSystemName = QLatin1String("raster"); +#endif + + m_graphicsSystem = QGraphicsSystemFactory::create(m_graphicsSystemName); +} + + +QPixmapData *QRuntimeGraphicsSystem::createPixmapData(QPixmapData::PixelType type) const +{ + Q_ASSERT(m_graphicsSystem); + QPixmapData *data = m_graphicsSystem->createPixmapData(type); + + QRuntimePixmapData *rtData = new QRuntimePixmapData(this, type); + rtData->m_data = data; + m_pixmapDatas << rtData; + + return rtData; +} + +QWindowSurface *QRuntimeGraphicsSystem::createWindowSurface(QWidget *widget) const +{ + Q_ASSERT(m_graphicsSystem); + QRuntimeWindowSurface *rtSurface = new QRuntimeWindowSurface(this, widget); + rtSurface->m_windowSurface = m_graphicsSystem->createWindowSurface(widget); + widget->setWindowSurface(rtSurface); + m_windowSurfaces << rtSurface; + increaseMemoryUsage(rtSurface->memoryUsage()); + return rtSurface; +} + +/*! + Sets graphics system when resource memory consumption is under /a memoryUsageLimit. +*/ +void QRuntimeGraphicsSystem::setGraphicsSystem(const QString &name, uint memoryUsageLimit) +{ +#ifdef QT_DEBUG + qDebug() << "QRuntimeGraphicsSystem::setGraphicsSystem( "<< name <<", " << memoryUsageLimit << ")"; + qDebug() << " current approximated graphics system memory usage " << memoryUsage() << " bytes"; +#endif + if (memoryUsage() >= memoryUsageLimit) { + m_graphicsSystemChangeMemoryLimit = memoryUsageLimit; + m_pendingGraphicsSystemName = name; + } else { + setGraphicsSystem(name); + } +} + +void QRuntimeGraphicsSystem::setGraphicsSystem(const QString &name) +{ + if (m_graphicsSystemName == name) + return; +#ifdef QT_DEBUG + qDebug() << "QRuntimeGraphicsSystem::setGraphicsSystem( " << name << " )"; + qDebug() << " current approximated graphics system memory usage "<< memoryUsage() << " bytes"; +#endif + delete m_graphicsSystem; + m_graphicsSystem = QGraphicsSystemFactory::create(name); + m_graphicsSystemName = name; + + Q_ASSERT(m_graphicsSystem); + + m_graphicsSystemChangeMemoryLimit = 0; + m_pendingGraphicsSystemName = QString(); + + for (int i = 0; i < m_pixmapDatas.size(); ++i) { + QRuntimePixmapData *proxy = m_pixmapDatas.at(i); + QPixmapData *newData = m_graphicsSystem->createPixmapData(proxy->m_data->pixelType()); + // ### TODO Optimize. Openvg and s60raster graphics systems could switch internal ARGB32_PRE QImage buffers. + newData->fromImage(proxy->m_data->toImage(), Qt::AutoColor | Qt::OrderedAlphaDither); + delete proxy->m_data; + proxy->m_data = newData; + proxy->readBackInfo(); + } + + for (int i = 0; i < m_windowSurfaces.size(); ++i) { + QRuntimeWindowSurface *proxy = m_windowSurfaces.at(i); + QWidget *widget = proxy->m_windowSurface->window(); + + if(m_windowSurfaceDestroyPolicy == DestroyImmediately) { + delete proxy->m_windowSurface; + proxy->m_pendingWindowSurface = 0; + } else { + proxy->m_pendingWindowSurface = proxy->m_windowSurface; + } + + proxy->m_windowSurface = m_graphicsSystem->createWindowSurface(widget); + qt_widget_private(widget)->invalidateBuffer(widget->rect()); + } +} + +void QRuntimeGraphicsSystem::removePixmapData(QRuntimePixmapData *pixmapData) const +{ + int index = m_pixmapDatas.lastIndexOf(pixmapData); + m_pixmapDatas.removeAt(index); + decreaseMemoryUsage(pixmapData->memoryUsage(), true); +} + +void QRuntimeGraphicsSystem::removeWindowSurface(QRuntimeWindowSurface *windowSurface) const +{ + int index = m_windowSurfaces.lastIndexOf(windowSurface); + m_windowSurfaces.removeAt(index); + decreaseMemoryUsage(windowSurface->memoryUsage(), true); +} + +void QRuntimeGraphicsSystem::increaseMemoryUsage(uint amount) const +{ + m_memoryUsage += amount; + + if (m_graphicsSystemChangeMemoryLimit && + m_memoryUsage < m_graphicsSystemChangeMemoryLimit) { + + QRuntimeGraphicsSystem *gs = const_cast<QRuntimeGraphicsSystem*>(this); + QDeferredGraphicsSystemChange *deferredChange = + new QDeferredGraphicsSystemChange(gs, m_pendingGraphicsSystemName); + deferredChange->launch(); + } +} + +void QRuntimeGraphicsSystem::decreaseMemoryUsage(uint amount, bool persistent) const +{ + m_memoryUsage -= amount; + + if (persistent && m_graphicsSystemChangeMemoryLimit && + m_memoryUsage < m_graphicsSystemChangeMemoryLimit) { + + QRuntimeGraphicsSystem *gs = const_cast<QRuntimeGraphicsSystem*>(this); + QDeferredGraphicsSystemChange *deferredChange = + new QDeferredGraphicsSystemChange(gs, m_pendingGraphicsSystemName); + deferredChange->launch(); + } +} + +#include "qgraphicssystem_runtime.moc" + +QT_END_NAMESPACE |