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     3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

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    16 ** GNU Lesser General Public License Usage

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    38 ** $QT_END_LICENSE$

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    40 ****************************************************************************/

    41 

    42 #include <private/qgraphicssystem_runtime_p.h>

    43 #include <private/qgraphicssystem_raster_p.h>

    44 #include <private/qgraphicssystemfactory_p.h>

    45 #include <private/qapplication_p.h>

    46 #include <private/qwidget_p.h>

    47 #include <QtCore/QDebug>

    48 #include <QtCore/QTimer>

    49 #include <QtGui/QBitmap>

    50 

    51 QT_BEGIN_NAMESPACE

    52 

    53 static int qt_pixmap_serial = 0;

    54 

    55 #define READBACK(f)                                         \

    56     m_graphicsSystem->decreaseMemoryUsage(memoryUsage());   \

    57     f                                                       \

    58     readBackInfo();                                         \

    59     m_graphicsSystem->increaseMemoryUsage(memoryUsage());   \

    60 

    61 

    62 class QDeferredGraphicsSystemChange : public QObject

    63 {

    64     Q_OBJECT

    65 

    66 public:

    67     QDeferredGraphicsSystemChange(QRuntimeGraphicsSystem *gs, const QString& graphicsSystemName)

    68     : m_graphicsSystem(gs), m_graphicsSystemName(graphicsSystemName)

    69     {

    70     }

    71 

    72     void launch()

    73     {

    74         QTimer::singleShot(0, this, SLOT(doChange()));

    75     }

    76 

    77 private slots:

    78 

    79     void doChange()

    80     {

    81         m_graphicsSystem->setGraphicsSystem(m_graphicsSystemName);

    82         deleteLater();

    83     }

    84 

    85 private:

    86 

    87     QRuntimeGraphicsSystem *m_graphicsSystem;

    88     QString m_graphicsSystemName;

    89 };

    90 

    91 QRuntimePixmapData::QRuntimePixmapData(const QRuntimeGraphicsSystem *gs, PixelType type)

    92         : QPixmapData(type, RuntimeClass), m_graphicsSystem(gs)

    93 {

    94     setSerialNumber(++qt_pixmap_serial);

    95 }

    96 

    97 QRuntimePixmapData::~QRuntimePixmapData()

    98 {

    99     m_graphicsSystem->removePixmapData(this);

   100     delete m_data;

   101 }

   102 

   103 void QRuntimePixmapData::readBackInfo()

   104 {

   105     w = m_data->width();

   106     h = m_data->height();

   107     d = m_data->depth();

   108     is_null = m_data->isNull();

   109 }

   110 

   111 

   112 QPixmapData *QRuntimePixmapData::createCompatiblePixmapData() const

   113 {

   114     QRuntimePixmapData *rtData = new QRuntimePixmapData(m_graphicsSystem, pixelType());

   115     rtData->m_data = m_data->createCompatiblePixmapData();

   116     return rtData;

   117 }

   118 

   119 

   120 void QRuntimePixmapData::resize(int width, int height)

   121 {

   122     READBACK(

   123         m_data->resize(width, height);

   124     )

   125 }

   126 

   127 

   128 void QRuntimePixmapData::fromImage(const QImage &image,

   129                                    Qt::ImageConversionFlags flags)

   130 {

   131     READBACK(

   132         m_data->fromImage(image, flags);

   133     )

   134 }

   135 

   136 

   137 bool QRuntimePixmapData::fromFile(const QString &filename, const char *format,

   138                                   Qt::ImageConversionFlags flags)

   139 {

   140     bool success(false);

   141     READBACK(

   142         success = m_data->fromFile(filename, format, flags);

   143     )

   144     return success;

   145 }

   146 

   147 bool QRuntimePixmapData::fromData(const uchar *buffer, uint len, const char *format,

   148                                   Qt::ImageConversionFlags flags)

   149 {

   150     bool success(false);

   151     READBACK(

   152         success = m_data->fromData(buffer, len, format, flags);

   153     )

   154     return success;

   155 }

   156 

   157 

   158 void QRuntimePixmapData::copy(const QPixmapData *data, const QRect &rect)

   159 {

   160     if (data->runtimeData()) {

   161         READBACK(

   162             m_data->copy(data->runtimeData(), rect);

   163         )

   164     } else {

   165         READBACK(

   166             m_data->copy(data, rect);

   167         )

   168     }

   169 }

   170 

   171 bool QRuntimePixmapData::scroll(int dx, int dy, const QRect &rect)

   172 {

   173     return m_data->scroll(dx, dy, rect);

   174 }

   175 

   176 

   177 int QRuntimePixmapData::metric(QPaintDevice::PaintDeviceMetric metric) const

   178 {

   179     return m_data->metric(metric);

   180 }

   181 

   182 void QRuntimePixmapData::fill(const QColor &color)

   183 {

   184     return m_data->fill(color);

   185 }

   186 

   187 QBitmap QRuntimePixmapData::mask() const

   188 {

   189     return m_data->mask();

   190 }

   191 

   192 void QRuntimePixmapData::setMask(const QBitmap &mask)

   193 {

   194     READBACK(

   195         m_data->setMask(mask);

   196     )

   197 }

   198 

   199 bool QRuntimePixmapData::hasAlphaChannel() const

   200 {

   201     return m_data->hasAlphaChannel();

   202 }

   203 

   204 QPixmap QRuntimePixmapData::transformed(const QTransform &matrix,

   205                                         Qt::TransformationMode mode) const

   206 {

   207     return m_data->transformed(matrix, mode);

   208 }

   209 

   210 void QRuntimePixmapData::setAlphaChannel(const QPixmap &alphaChannel)

   211 {

   212     READBACK(

   213         m_data->setAlphaChannel(alphaChannel);

   214     )

   215 }

   216 

   217 QPixmap QRuntimePixmapData::alphaChannel() const

   218 {

   219     return m_data->alphaChannel();

   220 }

   221 

   222 QImage QRuntimePixmapData::toImage() const

   223 {

   224     return m_data->toImage();

   225 }

   226 

   227 QPaintEngine* QRuntimePixmapData::paintEngine() const

   228 {

   229     return m_data->paintEngine();

   230 }

   231 

   232 QImage* QRuntimePixmapData::buffer()

   233 {

   234     return m_data->buffer();

   235 }

   236 

   237 #if defined(Q_OS_SYMBIAN)

   238 void* QRuntimePixmapData::toNativeType(NativeType type)

   239 {

   240     return m_data->toNativeType(type);

   241 }

   242 

   243 void QRuntimePixmapData::fromNativeType(void *pixmap, NativeType type)

   244 {

   245     m_data->fromNativeType(pixmap, type);

   246     readBackInfo();

   247 }

   248 #endif

   249 

   250 QPixmapData* QRuntimePixmapData::runtimeData() const

   251 {

   252     return m_data;

   253 }

   254 

   255 uint QRuntimePixmapData::memoryUsage() const

   256 {

   257     if(is_null || d == 0)

   258         return 0;

   259     return w * h * (d / 8);

   260 }

   261 

   262 

   263 QRuntimeWindowSurface::QRuntimeWindowSurface(const QRuntimeGraphicsSystem *gs, QWidget *window)

   264     : QWindowSurface(window), m_windowSurface(0), m_pendingWindowSurface(0), m_graphicsSystem(gs)

   265 {

   266 

   267 }

   268 

   269 QRuntimeWindowSurface::~QRuntimeWindowSurface()

   270 {

   271     m_graphicsSystem->removeWindowSurface(this);

   272     delete m_windowSurface;

   273 }

   274 

   275 QPaintDevice *QRuntimeWindowSurface::paintDevice()

   276 {

   277     return m_windowSurface->paintDevice();

   278 }

   279 

   280 void QRuntimeWindowSurface::flush(QWidget *widget, const QRegion &region,

   281                                   const QPoint &offset)

   282 {

   283     m_windowSurface->flush(widget, region, offset);

   284 

   285     int destroyPolicy = m_graphicsSystem->windowSurfaceDestroyPolicy();

   286     if(m_pendingWindowSurface &&

   287         destroyPolicy == QRuntimeGraphicsSystem::DestroyAfterFirstFlush) {

   288 #ifdef QT_DEBUG

   289         qDebug() << "QRuntimeWindowSurface::flush() - destroy pending window surface";

   290 #endif

   291         delete m_pendingWindowSurface;

   292         m_pendingWindowSurface = 0;

   293     }

   294 }

   295 

   296 void QRuntimeWindowSurface::setGeometry(const QRect &rect)

   297 {

   298     m_graphicsSystem->decreaseMemoryUsage(memoryUsage());

   299     m_windowSurface->setGeometry(rect);

   300     m_graphicsSystem->increaseMemoryUsage(memoryUsage());

   301 }

   302 

   303 bool QRuntimeWindowSurface::scroll(const QRegion &area, int dx, int dy)

   304 {

   305     return m_windowSurface->scroll(area, dx, dy);

   306 }

   307 

   308 void QRuntimeWindowSurface::beginPaint(const QRegion &rgn)

   309 {

   310     m_windowSurface->beginPaint(rgn);

   311 }

   312 

   313 void QRuntimeWindowSurface::endPaint(const QRegion &rgn)

   314 {

   315     m_windowSurface->endPaint(rgn);

   316 }

   317 

   318 QImage* QRuntimeWindowSurface::buffer(const QWidget *widget)

   319 {

   320     return m_windowSurface->buffer(widget);

   321 }

   322 

   323 QPixmap QRuntimeWindowSurface::grabWidget(const QWidget *widget, const QRect& rectangle) const

   324 {

   325     return m_windowSurface->grabWidget(widget, rectangle);

   326 }

   327 

   328 QPoint QRuntimeWindowSurface::offset(const QWidget *widget) const

   329 {

   330     return m_windowSurface->offset(widget);

   331 }

   332 

   333 uint QRuntimeWindowSurface::memoryUsage() const

   334 {

   335     QPaintDevice *pdev = m_windowSurface->paintDevice();

   336     if (pdev && pdev->depth() != 0)

   337         return pdev->width() * pdev->height() * (pdev->depth()/8);

   338 

   339     return 0;

   340 }

   341 

   342 QRuntimeGraphicsSystem::QRuntimeGraphicsSystem()

   343     : m_memoryUsage(0), m_windowSurfaceDestroyPolicy(DestroyImmediately),

   344 	m_graphicsSystem(0), m_graphicsSystemChangeMemoryLimit(0)

   345 {

   346     QApplicationPrivate::graphics_system_name = QLatin1String("runtime");

   347     QApplicationPrivate::runtime_graphics_system = true;

   348 

   349 #ifdef Q_OS_SYMBIAN

   350     m_graphicsSystemName = QLatin1String("openvg");

   351     m_windowSurfaceDestroyPolicy = DestroyAfterFirstFlush;

   352 #else

   353     m_graphicsSystemName = QLatin1String("raster");

   354 #endif

   355 

   356     m_graphicsSystem = QGraphicsSystemFactory::create(m_graphicsSystemName);

   357 }

   358 

   359 

   360 QPixmapData *QRuntimeGraphicsSystem::createPixmapData(QPixmapData::PixelType type) const

   361 {

   362     Q_ASSERT(m_graphicsSystem);

   363     QPixmapData *data = m_graphicsSystem->createPixmapData(type);

   364 

   365     QRuntimePixmapData *rtData = new QRuntimePixmapData(this, type);

   366     rtData->m_data = data;

   367     m_pixmapDatas << rtData;

   368 

   369     return rtData;

   370 }

   371 

   372 QWindowSurface *QRuntimeGraphicsSystem::createWindowSurface(QWidget *widget) const

   373 {

   374     Q_ASSERT(m_graphicsSystem);

   375     QRuntimeWindowSurface *rtSurface = new QRuntimeWindowSurface(this, widget);

   376     rtSurface->m_windowSurface = m_graphicsSystem->createWindowSurface(widget);

   377     widget->setWindowSurface(rtSurface);

   378     m_windowSurfaces << rtSurface;

   379     increaseMemoryUsage(rtSurface->memoryUsage());

   380     return rtSurface;

   381 }

   382 

   383 /*!

   384     Sets graphics system when resource memory consumption is under /a memoryUsageLimit.

   385 */

   386 void QRuntimeGraphicsSystem::setGraphicsSystem(const QString &name, uint memoryUsageLimit)

   387 {

   388 #ifdef QT_DEBUG

   389     qDebug() << "QRuntimeGraphicsSystem::setGraphicsSystem( "<< name <<", " << memoryUsageLimit << ")";

   390     qDebug() << "        current approximated graphics system memory usage " << memoryUsage() << " bytes";

   391 #endif

   392     if (memoryUsage() >= memoryUsageLimit) {

   393         m_graphicsSystemChangeMemoryLimit = memoryUsageLimit;

   394         m_pendingGraphicsSystemName = name;

   395     } else {

   396         setGraphicsSystem(name);

   397     }

   398 }

   399 

   400 void QRuntimeGraphicsSystem::setGraphicsSystem(const QString &name)

   401 {

   402     if (m_graphicsSystemName == name)

   403         return;

   404 #ifdef QT_DEBUG

   405     qDebug() << "QRuntimeGraphicsSystem::setGraphicsSystem( " << name << " )";

   406     qDebug() << "        current approximated graphics system memory usage "<< memoryUsage() << " bytes";

   407 #endif

   408     delete m_graphicsSystem;

   409     m_graphicsSystem = QGraphicsSystemFactory::create(name);

   410     m_graphicsSystemName = name;

   411 

   412     Q_ASSERT(m_graphicsSystem);

   413 

   414     m_graphicsSystemChangeMemoryLimit = 0;

   415     m_pendingGraphicsSystemName = QString();

   416 

   417     for (int i = 0; i < m_pixmapDatas.size(); ++i) {

   418         QRuntimePixmapData *proxy = m_pixmapDatas.at(i);

   419         QPixmapData *newData = m_graphicsSystem->createPixmapData(proxy->m_data);

   420         // ### TODO Optimize. Openvg and s60raster graphics systems could switch internal ARGB32_PRE QImage buffers.

   421         newData->fromImage(proxy->m_data->toImage(), Qt::NoOpaqueDetection);

   422         delete proxy->m_data;

   423         proxy->m_data = newData;

   424         proxy->readBackInfo();

   425     }

   426 

   427     for (int i = 0; i < m_windowSurfaces.size(); ++i) {

   428         QRuntimeWindowSurface *proxy = m_windowSurfaces.at(i);

   429         QWidget *widget = proxy->m_windowSurface->window();

   430 

   431         if(m_windowSurfaceDestroyPolicy == DestroyImmediately) {

   432             delete proxy->m_windowSurface;

   433             proxy->m_pendingWindowSurface = 0;

   434         } else {

   435             proxy->m_pendingWindowSurface = proxy->m_windowSurface;

   436         }

   437 

   438         proxy->m_windowSurface = m_graphicsSystem->createWindowSurface(widget);

   439         qt_widget_private(widget)->invalidateBuffer(widget->rect());

   440     }

   441 }

   442 

   443 void QRuntimeGraphicsSystem::removePixmapData(QRuntimePixmapData *pixmapData) const

   444 {

   445     int index = m_pixmapDatas.lastIndexOf(pixmapData);

   446     m_pixmapDatas.removeAt(index);

   447     decreaseMemoryUsage(pixmapData->memoryUsage(), true);

   448 }

   449 

   450 void QRuntimeGraphicsSystem::removeWindowSurface(QRuntimeWindowSurface *windowSurface) const

   451 {

   452     int index = m_windowSurfaces.lastIndexOf(windowSurface);

   453     m_windowSurfaces.removeAt(index);

   454     decreaseMemoryUsage(windowSurface->memoryUsage(), true);

   455 }

   456 

   457 void QRuntimeGraphicsSystem::increaseMemoryUsage(uint amount) const

   458 {

   459     m_memoryUsage += amount;

   460 

   461     if (m_graphicsSystemChangeMemoryLimit &&

   462         m_memoryUsage < m_graphicsSystemChangeMemoryLimit) {

   463 

   464         QRuntimeGraphicsSystem *gs = const_cast<QRuntimeGraphicsSystem*>(this);

   465         QDeferredGraphicsSystemChange *deferredChange =

   466                     new QDeferredGraphicsSystemChange(gs, m_pendingGraphicsSystemName);

   467         deferredChange->launch();

   468     }

   469 }

   470 

   471 void QRuntimeGraphicsSystem::decreaseMemoryUsage(uint amount, bool persistent) const

   472 {

   473     m_memoryUsage -= amount;

   474 

   475     if (persistent && m_graphicsSystemChangeMemoryLimit &&

   476         m_memoryUsage < m_graphicsSystemChangeMemoryLimit) {

   477 

   478         QRuntimeGraphicsSystem *gs = const_cast<QRuntimeGraphicsSystem*>(this);

   479         QDeferredGraphicsSystemChange *deferredChange =

   480                     new QDeferredGraphicsSystemChange(gs, m_pendingGraphicsSystemName);

   481         deferredChange->launch();

   482     }

   483 }

   484 

   485 #include "qgraphicssystem_runtime.moc"

   486 

   487 QT_END_NAMESPACE