File indexing completed on 2024-05-12 15:58:31

 /*
  *  SPDX-FileCopyrightText: 2002 Patrick Julien <freak@codepimps.org>
  *  SPDX-FileCopyrightText: 2004 Boudewijn Rempt <boud@valdyas.org>
  *  SPDX-FileCopyrightText: 2021 L. E. Segovia <amy@amyspark.me>
  *
  *  SPDX-License-Identifier: GPL-2.0-or-later
  */
 
 #include "kis_paint_device.h"
 
 #include <QRect>
 #include <QTransform>
 #include <QImage>
 #include <QList>
 #include <QHash>
 #include <QIODevice>
 #include <qmath.h>
 #include <KisRegion.h>
 
 #include <klocalizedstring.h>
 
 #include <KoChannelInfo.h>
 #include <KoColorProfile.h>
 #include <KoColor.h>
 #include <KoColorSpace.h>
 #include <KoColorSpaceRegistry.h>
 #include <KoColorModelStandardIds.h>
 #include <KoIntegerMaths.h>
 #include <KoMixColorsOp.h>
 #include <KoUpdater.h>
 
 #include "kis_image.h"
 #include "kis_random_sub_accessor.h"
 #include "kis_selection.h"
 #include "kis_node.h"
 #include "kis_datamanager.h"
 #include "kis_paint_device_writer.h"
 #include "kis_selection_component.h"
 #include "kis_pixel_selection.h"
 #include "kis_repeat_iterators_pixel.h"
 #include "kis_fixed_paint_device.h"
 
 #include "tiles3/kis_hline_iterator.h"
 #include "tiles3/kis_vline_iterator.h"
 #include "tiles3/kis_random_accessor.h"
 
 #include "kis_default_bounds.h"
 
 #include "kis_lod_transform.h"
 
 #include "kis_raster_keyframe_channel.h"
 
 #include "kis_paint_device_cache.h"
 #include "kis_paint_device_data.h"
 #include "kis_paint_device_frames_interface.h"
 
 #include "kis_transform_worker.h"
 #include "kis_filter_strategy.h"
 #include "krita_utils.h"
 
 
 struct KisPaintDeviceSPStaticRegistrar {
     KisPaintDeviceSPStaticRegistrar() {
         qRegisterMetaType<KisPaintDeviceSP>("KisPaintDeviceSP");
     }
 };
 static KisPaintDeviceSPStaticRegistrar __registrar;
 
 
 
 struct KisPaintDevice::Private
 {
     /**
      * Used when the paint device is loading to ensure no lod/animation
      * interferes the process.
      */
     static const KisDefaultBoundsSP transitionalDefaultBounds;
 
 public:
 
     class KisPaintDeviceStrategy;
     class KisPaintDeviceWrappedStrategy;
 
     class DeviceChangeProfileCommand;
     class DeviceChangeColorSpaceCommand;
 
     Private(KisPaintDevice *paintDevice);
     ~Private();
 
     KisPaintDevice *q;
     KisNodeWSP parent;
     QScopedPointer<KisRasterKeyframeChannel> contentChannel;
     KisDefaultBoundsBaseSP defaultBounds;
     QScopedPointer<KisPaintDeviceStrategy> basicStrategy;
     QScopedPointer<KisPaintDeviceWrappedStrategy> wrappedStrategy;
     QMutex m_wrappedStrategyMutex;
 
     QScopedPointer<KisPaintDeviceFramesInterface> framesInterface;
     bool isProjectionDevice;
 
     KisPaintDeviceStrategy* currentStrategy();
 
     void init(const KoColorSpace *cs, const quint8 *defaultPixel);
     void convertColorSpace(const KoColorSpace *dstColorSpace,
                            KoColorConversionTransformation::Intent renderingIntent,
                            KoColorConversionTransformation::ConversionFlags conversionFlags,
                            KUndo2Command *parentCommand,
                            KoUpdater *progressUpdater);
     bool assignProfile(const KoColorProfile * profile, KUndo2Command *parentCommand);
 
     KUndo2Command* reincarnateWithDetachedHistory(bool copyContent);
 
 
     inline const KoColorSpace* colorSpace() const
     {
         return currentData()->colorSpace();
     }
     inline KisDataManagerSP dataManager() const
     {
         return currentData()->dataManager();
     }
 
     inline qint32 x() const
     {
         return currentData()->x();
     }
     inline qint32 y() const
     {
         return currentData()->y();
     }
     inline void setX(qint32 x)
     {
         currentData()->setX(x);
     }
     inline void setY(qint32 y)
     {
         currentData()->setY(y);
     }
 
     inline KisPaintDeviceCache* cache()
     {
         return currentData()->cache();
     }
 
     inline KisIteratorCompleteListener* cacheInvalidator() {
         return currentData()->cacheInvalidator();
     }
 
     inline KisInterstrokeDataSP interstrokeData() const {
         return currentData()->interstrokeData();
     }
 
     inline KUndo2Command* createChangeInterstrokeDataCommand(KisInterstrokeDataSP value) {
         return currentData()->createChangeInterstrokeDataCommand(value);
     }
 
     void cloneAllDataObjects(Private *rhs, bool copyFrames)
     {
 
         m_lodData.reset();
         m_externalFrameData.reset();
 
         if (!m_frames.isEmpty()) {
             m_frames.clear();
         }
 
         if (!copyFrames) {
             if (m_data) {
                 m_data->prepareClone(rhs->currentNonLodData(), true);
             } else {
                 m_data = toQShared(new KisPaintDeviceData(q, rhs->currentNonLodData(), true));
             }
         } else {
             if (m_data && !rhs->m_data) {
                 m_data.clear();
             } else if (!m_data && rhs->m_data) {
                 m_data = toQShared(new KisPaintDeviceData(q, rhs->m_data.data(), true));
             } else if (m_data && rhs->m_data) {
                 m_data->prepareClone(rhs->m_data.data(), true);
             }
 
             if (!rhs->m_frames.isEmpty()) {
                 FramesHash::const_iterator it = rhs->m_frames.constBegin();
                 FramesHash::const_iterator end = rhs->m_frames.constEnd();
 
                 for (; it != end; ++it) {
                     DataSP data = toQShared(new KisPaintDeviceData(q, it.value().data(), true));
                     m_frames.insert(it.key(), data);
                 }
             }
             m_nextFreeFrameId = rhs->m_nextFreeFrameId;
         }
 
         if (rhs->m_lodData) {
             m_lodData.reset(new KisPaintDeviceData(q, rhs->m_lodData.data(), true));
         }
     }
 
     void prepareClone(KisPaintDeviceSP src)
     {
         prepareCloneImpl(src, src->m_d->currentData());
         KIS_SAFE_ASSERT_RECOVER_NOOP(fastBitBltPossible(src));
     }
 
     bool fastBitBltPossible(KisPaintDeviceSP src)
     {
         return fastBitBltPossibleImpl(src->m_d->currentData());
     }
 
     int currentFrameId() const
     {
         KIS_ASSERT_RECOVER(contentChannel) {
             return -1;
         }
         return !defaultBounds->currentLevelOfDetail() ?
                contentChannel->activeKeyframeAt<KisRasterKeyframe>(defaultBounds->currentTime())->frameID() :
                -1;
     }
 
     KisDataManagerSP frameDataManager(int frameId) const
     {
         DataSP data = m_frames[frameId];
         return data->dataManager();
     }
 
     void invalidateFrameCache(int frameId)
     {
         DataSP data = m_frames[frameId];
         return data->cache()->invalidate();
     }
 
 private:
     typedef KisPaintDeviceData Data;
     typedef QSharedPointer<Data> DataSP;
     typedef QHash<int, DataSP> FramesHash;
 
     class FrameInsertionCommand : public KUndo2Command
     {
     public:
 
         FrameInsertionCommand(FramesHash *hash, DataSP data, int frameId, bool insert, KUndo2Command *parentCommand)
             : KUndo2Command(parentCommand),
               m_hash(hash),
               m_data(data),
               m_frameId(frameId),
               m_insert(insert)
         {
         }
 
         void redo() override
         {
             doSwap(m_insert);
         }
 
         void undo() override
         {
             doSwap(!m_insert);
         }
 
     private:
         void doSwap(bool insert)
         {
             if (insert) {
                 m_hash->insert(m_frameId, m_data);
             } else {
                 DataSP deletedData = m_hash->take(m_frameId);
             }
         }
 
     private:
         FramesHash *m_hash;
         DataSP m_data;
         int m_frameId;
         bool m_insert;
     };
 
 public:
 
     int getNextFrameId() {
         int frameId = 0;
         while (m_frames.contains(frameId = m_nextFreeFrameId++));
         KIS_SAFE_ASSERT_RECOVER_NOOP(!m_frames.contains(frameId));
 
         return frameId;
     }
 
     int createFrame(bool copy, int copySrc, const QPoint &offset, KUndo2Command *parentCommand)
     {
         DataSP data;
         bool initialFrame = false;
 
         if (m_frames.isEmpty()) {
             /**
              * Here we move the contents of the paint device to the
              * new frame and clear m_data to make the "background" for
              * the areas where there is no frame at all.
              */
             data = toQShared(new Data(q, m_data.data(), true));
             m_data->dataManager()->clear();
             m_data->cache()->invalidate();
             initialFrame = true;
 
         } else if (copy) {
             DataSP srcData = m_frames[copySrc];
             data = toQShared(new Data(q, srcData.data(), true));
         } else {
             DataSP srcData = m_frames.begin().value();
             data = toQShared(new Data(q, srcData.data(), false));
         }
 
         if (!initialFrame && !copy) {
             data->setX(offset.x());
             data->setY(offset.y());
         }
 
         int frameId = getNextFrameId();
 
         if (parentCommand) {
             KUndo2Command *cmd =
                 new FrameInsertionCommand(&m_frames,
                                           data,
                                           frameId, true,
                                           parentCommand);
 
             cmd->redo();
         } else {
             m_frames.insert(frameId, data);
         }
 
         return frameId;
     }
 
     void deleteFrame(int frameID, KUndo2Command *parentCommand)
     {
         KIS_SAFE_ASSERT_RECOVER_RETURN(m_frames.contains(frameID));
         DataSP deletedData = m_frames[frameID];
 
         if(parentCommand) {
             KUndo2Command *cmd =
                 new FrameInsertionCommand(&m_frames,
                                           deletedData,
                                           frameID, false,
                                           parentCommand);
             cmd->redo();
         } else {
             m_frames.take(frameID);
         }
     }
 
     QRect frameBounds(int frameId)
     {
         DataSP data = m_frames[frameId];
 
         QRect extent = data->dataManager()->extent();
         extent.translate(data->x(), data->y());
 
         quint8 defaultOpacity = data->colorSpace()->opacityU8(data->dataManager()->defaultPixel());
 
         if (defaultOpacity != OPACITY_TRANSPARENT_U8) {
             extent |= defaultBounds->bounds();
         }
 
         return extent;
     }
 
     QPoint frameOffset(int frameId) const
     {
         DataSP data = m_frames[frameId];
         return QPoint(data->x(), data->y());
     }
 
     void setFrameOffset(int frameId, const QPoint &offset)
     {
         DataSP data = m_frames[frameId];
         data->setX(offset.x());
         data->setY(offset.y());
     }
 
     const QList<int> frameIds() const
     {
         return m_frames.keys();
     }
 
     bool readFrame(QIODevice *stream, int frameId)
     {
         bool retval = false;
         DataSP data = m_frames[frameId];
         retval = data->dataManager()->read(stream);
         data->cache()->invalidate();
         return retval;
     }
 
     bool writeFrame(KisPaintDeviceWriter &store, int frameId)
     {
         DataSP data = m_frames[frameId];
         return data->dataManager()->write(store);
     }
 
     void setFrameDefaultPixel(const KoColor &defPixel, int frameId)
     {
         DataSP data = m_frames[frameId];
         KoColor color(defPixel);
         color.convertTo(data->colorSpace());
         data->dataManager()->setDefaultPixel(color.data());
     }
 
     KoColor frameDefaultPixel(int frameId) const
     {
         DataSP data = m_frames[frameId];
         return KoColor(data->dataManager()->defaultPixel(),
                        data->colorSpace());
     }
 
     void writeFrameToDevice(int frameId, KisPaintDeviceSP targetDevice);
     void uploadFrame(int srcFrameId, int dstFrameId, KisPaintDeviceSP srcDevice);
     void uploadFrame(int dstFrameId, KisPaintDeviceSP srcDevice);
     void uploadFrameData(DataSP srcData, DataSP dstData);
 
     struct LodDataStructImpl;
     LodDataStruct* createLodDataStruct(int lod);
     void updateLodDataStruct(LodDataStruct *dst, const QRect &srcRect);
     void uploadLodDataStruct(LodDataStruct *dst);
     KisRegion regionForLodSyncing() const;
 
     void updateLodDataManager(KisDataManager *srcDataManager,
                               KisDataManager *dstDataManager, const QPoint &srcOffset, const QPoint &dstOffset,
                               const QRect &originalRect, int lod);
 
     void generateLodCloneDevice(KisPaintDeviceSP dst, const QRect &originalRect, int lod);
 
     void tesingFetchLodDevice(KisPaintDeviceSP targetDevice);
 
 
 private:
     qint64 estimateDataSize(Data *data) const {
         const QRect &rc = data->dataManager()->extent();
         return qint64(rc.width()) * rc.height() * data->colorSpace()->pixelSize();
     }
 
 public:
 
     void estimateMemoryStats(qint64 &imageData, qint64 &temporaryData, qint64 &lodData) const {
         imageData = 0;
         temporaryData = 0;
         lodData = 0;
 
         if (m_data) {
             imageData += estimateDataSize(m_data.data());
         }
 
         if (m_lodData) {
             lodData += estimateDataSize(m_lodData.data());
         }
 
         if (m_externalFrameData) {
             temporaryData += estimateDataSize(m_externalFrameData.data());
         }
 
         Q_FOREACH (DataSP value, m_frames.values()) {
             imageData += estimateDataSize(value.data());
         }
     }
 
 
 private:
 
     inline DataSP currentFrameData() const
     {
         DataSP data;
 
         const int vFramesCount = contentChannel->keyframeCount();
 
         if (vFramesCount >= 1) {
             KisRasterKeyframeSP keyframe =  contentChannel->activeKeyframeAt<KisRasterKeyframe>(defaultBounds->currentTime());
             if (!keyframe || keyframe->frameID() < 0) {
                 return m_data;
             }
 
             const int frameID = keyframe->frameID();
             KIS_ASSERT_RECOVER(m_frames.contains(frameID)) {
                 return m_data;
             }
 
             data = m_frames[frameID];
         } else {
             data = m_data;
         }
 
         return data;
     }
 
     inline Data* currentNonLodData() const
     {
         Data *data = m_data.data();
 
         if (contentChannel) {
             data = currentFrameData().data();
         } else if (isProjectionDevice && defaultBounds->externalFrameActive()) {
             if (!m_externalFrameData) {
                 QMutexLocker l(&m_dataSwitchLock);
                 if (!m_externalFrameData) {
                     m_externalFrameData.reset(new Data(q, m_data.data(), false));
                 }
             }
             data = m_externalFrameData.data();
         }
 
         return data;
     }
 
     inline void ensureLodDataPresent() const
     {
         if (!m_lodData) {
             Data *srcData = currentNonLodData();
 
             QMutexLocker l(&m_dataSwitchLock);
             if (!m_lodData) {
                 m_lodData.reset(new Data(q, srcData, false));
             }
         }
     }
 
     inline Data* currentData() const
     {
         Data *data;
 
         if (defaultBounds->currentLevelOfDetail()) {
             ensureLodDataPresent();
             data = m_lodData.data();
         } else {
             data = currentNonLodData();
         }
 
         return data;
     }
 
     void prepareCloneImpl(KisPaintDeviceSP src, Data *srcData)
     {
         /**
          * The result of currentData() depends on the current
          * level of detail and animation frame index. So we
          * should first connect the device to the new
          * default bounds object, and only after that ask
          * currentData() to start cloning.
          */
         q->setDefaultBounds(src->defaultBounds());
 
         currentData()->prepareClone(srcData);
 
 
         /**
          * Default pixel must be updated **after** the color space
          * of the device has been adjusted in prpareClone(). Otherwise,
          * colorSpace() of the resulting KoColor object will be
          * incorrect.
          */
         KIS_SAFE_ASSERT_RECOVER_RETURN(*colorSpace() == *src->colorSpace());
         q->setDefaultPixel(KoColor(srcData->dataManager()->defaultPixel(), colorSpace()));
 
     }
 
     bool fastBitBltPossibleImpl(Data *srcData)
     {
         return x() == srcData->x() && y() == srcData->y() &&
                *colorSpace() == *srcData->colorSpace();
     }
 
     QList<Data*> allDataObjects() const
     {
         QList<Data*> dataObjects;
 
         if (m_frames.isEmpty()) {
             dataObjects << m_data.data();
         }
         dataObjects << m_lodData.data();
         dataObjects << m_externalFrameData.data();
 
         Q_FOREACH (DataSP value, m_frames.values()) {
             dataObjects << value.data();
         }
 
         return dataObjects;
     }
 
     void transferFromData(Data *data, KisPaintDeviceSP targetDevice);
 
     struct Q_DECL_HIDDEN StrategyPolicy;
     typedef KisSequentialIteratorBase<ReadOnlyIteratorPolicy<StrategyPolicy>, StrategyPolicy> InternalSequentialConstIterator;
     typedef KisSequentialIteratorBase<WritableIteratorPolicy<StrategyPolicy>, StrategyPolicy> InternalSequentialIterator;
 
 private:
     friend class KisPaintDeviceFramesInterface;
 
 private:
     DataSP m_data;
     mutable QScopedPointer<Data> m_lodData;
     mutable QScopedPointer<Data> m_externalFrameData;
     mutable QMutex m_dataSwitchLock;
 
     FramesHash m_frames;
     int m_nextFreeFrameId;
 };
 
 const KisDefaultBoundsSP KisPaintDevice::Private::transitionalDefaultBounds = new KisDefaultBounds();
 
 #include "kis_paint_device_strategies.h"
 
 KisPaintDevice::Private::Private(KisPaintDevice *paintDevice)
     : q(paintDevice),
       basicStrategy(new KisPaintDeviceStrategy(paintDevice, this)),
       isProjectionDevice(false),
       m_data(new Data(paintDevice)),
       m_nextFreeFrameId(0)
 {
 }
 
 KisPaintDevice::Private::~Private()
 {
     contentChannel.reset();
     m_frames.clear();
 }
 
 KisPaintDevice::Private::KisPaintDeviceStrategy* KisPaintDevice::Private::currentStrategy()
 {
     if (!defaultBounds->wrapAroundMode()) {
         return basicStrategy.data();
     }
 
     const QRect wrapRect = defaultBounds->imageBorderRect();
 
     if (!wrappedStrategy || wrappedStrategy->wrapRect() != wrapRect) {
         QMutexLocker locker(&m_wrappedStrategyMutex);
 
         if (!wrappedStrategy) {
             wrappedStrategy.reset(new KisPaintDeviceWrappedStrategy(wrapRect, q, this));
         }  else if (wrappedStrategy->wrapRect() != wrapRect) {
             wrappedStrategy->setWrapRect(wrapRect);
         }
     }
 
     return wrappedStrategy.data();
 }
 
 struct KisPaintDevice::Private::StrategyPolicy {
     StrategyPolicy(KisPaintDevice::Private::KisPaintDeviceStrategy *strategy,
                    KisDataManager *dataManager, qint32 offsetX, qint32 offsetY)
         : m_strategy(strategy),
           m_dataManager(dataManager),
           m_offsetX(offsetX),
           m_offsetY(offsetY)
     {
     }
 
     KisHLineConstIteratorSP createConstIterator(const QRect &rect)
     {
         return m_strategy->createHLineConstIteratorNG(m_dataManager, rect.x(), rect.y(), rect.width(), m_offsetX, m_offsetY);
     }
 
     KisHLineIteratorSP createIterator(const QRect &rect)
     {
         return m_strategy->createHLineIteratorNG(m_dataManager, rect.x(), rect.y(), rect.width(), m_offsetX, m_offsetY);
     }
 
     int pixelSize() const
     {
         return m_dataManager->pixelSize();
     }
 
 
     KisPaintDeviceStrategy *m_strategy;
     KisDataManager *m_dataManager;
     int m_offsetX;
     int m_offsetY;
 };
 
 struct KisPaintDevice::Private::LodDataStructImpl : public KisPaintDevice::LodDataStruct {
     LodDataStructImpl(Data *_lodData) : lodData(_lodData) {}
     QScopedPointer<Data> lodData;
 };
 
 KisRegion KisPaintDevice::Private::regionForLodSyncing() const
 {
     Data *srcData = currentNonLodData();
     return srcData->dataManager()->region().translated(srcData->x(), srcData->y());
 }
 
 KisPaintDevice::LodDataStruct* KisPaintDevice::Private::createLodDataStruct(int newLod)
 {
     KIS_SAFE_ASSERT_RECOVER_NOOP(newLod > 0);
 
     Data *srcData = currentNonLodData();
 
     Data *lodData = new Data(q, srcData, false);
     LodDataStruct *lodStruct = new LodDataStructImpl(lodData);
 
     int expectedX = KisLodTransform::coordToLodCoord(srcData->x(), newLod);
     int expectedY = KisLodTransform::coordToLodCoord(srcData->y(), newLod);
 
     /**
      * We compare color spaces as pure pointers, because they must be
      * exactly the same, since they come from the common source.
      */
     if (lodData->levelOfDetail() != newLod ||
         lodData->colorSpace() != srcData->colorSpace() ||
         lodData->x() != expectedX ||
         lodData->y() != expectedY) {
 
 
         lodData->prepareClone(srcData);
 
         lodData->setLevelOfDetail(newLod);
         lodData->setX(expectedX);
         lodData->setY(expectedY);
 
         // FIXME: different kind of synchronization
     }
 
     lodData->cache()->invalidate();
 
     return lodStruct;
 }
 
 void KisPaintDevice::Private::updateLodDataManager(KisDataManager *srcDataManager,
                                                    KisDataManager *dstDataManager,
                                                    const QPoint &srcOffset,
                                                    const QPoint &dstOffset,
                                                    const QRect &originalRect,
                                                    int lod)
 {
     if (originalRect.isEmpty()) return;
 
     const int srcStepSize = 1 << lod;
 
     KIS_ASSERT_RECOVER_RETURN(lod > 0);
 
     const QRect srcRect = KisLodTransform::alignedRect(originalRect, lod);
     const QRect dstRect = KisLodTransform::scaledRect(srcRect, lod);
     if (!srcRect.isValid() || !dstRect.isValid()) return;
 
     KIS_ASSERT_RECOVER_NOOP(srcRect.width() / srcStepSize == dstRect.width());
 
     const int pixelSize = srcDataManager->pixelSize();
 
     int rowsAccumulated = 0;
     int columnsAccumulated = 0;
 
     KoMixColorsOp *mixOp = colorSpace()->mixColorsOp();
 
     QScopedArrayPointer<quint8> blendData(new quint8[srcStepSize * srcRect.width() * pixelSize]);
     quint8 *blendDataPtr = blendData.data();
     int blendDataOffset = 0;
 
     const int srcCellSize = srcStepSize * srcStepSize;
     const int srcCellStride = srcCellSize * pixelSize;
     const int srcStepStride = srcStepSize * pixelSize;
     const int srcColumnStride = (srcStepSize - 1) * srcStepStride;
 
     QScopedArrayPointer<qint16> weights(new qint16[srcCellSize]);
 
     {
         const qint16 averageWeight = qCeil(255.0 / srcCellSize);
         const qint16 extraWeight = averageWeight * srcCellSize - 255;
         KIS_ASSERT_RECOVER_NOOP(extraWeight == 1);
 
         for (int i = 0; i < srcCellSize - 1; i++) {
             weights[i] = averageWeight;
         }
         weights[srcCellSize - 1] = averageWeight - extraWeight;
     }
 
     InternalSequentialConstIterator srcIntIt(StrategyPolicy(currentStrategy(), srcDataManager, srcOffset.x(), srcOffset.y()), srcRect);
     InternalSequentialIterator dstIntIt(StrategyPolicy(currentStrategy(), dstDataManager, dstOffset.x(), dstOffset.y()), dstRect);
 
     int rowsRemaining = srcRect.height();
     while (rowsRemaining > 0) {
 
         int colsRemaining = srcRect.width();
         while (colsRemaining > 0 && srcIntIt.nextPixel()) {
 
             memcpy(blendDataPtr, srcIntIt.rawDataConst(), pixelSize);
             blendDataPtr += pixelSize;
             columnsAccumulated++;
 
             if (columnsAccumulated >= srcStepSize) {
                 blendDataPtr += srcColumnStride;
                 columnsAccumulated = 0;
             }
 
             colsRemaining--;
         }
 
         rowsAccumulated++;
 
         if (rowsAccumulated >= srcStepSize) {
 
             // blend and write the final data
             blendDataPtr = blendData.data();
 
             int colsRemaining = dstRect.width();
             while (colsRemaining > 0 && dstIntIt.nextPixel()) {
                 mixOp->mixColors(blendDataPtr, weights.data(), srcCellSize, dstIntIt.rawData());
                 blendDataPtr += srcCellStride;
 
                 colsRemaining--;
             }
 
             // reset counters
             rowsAccumulated = 0;
             blendDataPtr = blendData.data();
             blendDataOffset = 0;
         } else {
             blendDataOffset += srcStepStride;
             blendDataPtr = blendData.data() + blendDataOffset;
         }
 
         rowsRemaining--;
     }
 }
 
 void KisPaintDevice::Private::updateLodDataStruct(LodDataStruct *_dst, const QRect &originalRect)
 {
     LodDataStructImpl *dst = dynamic_cast<LodDataStructImpl*>(_dst);
     KIS_SAFE_ASSERT_RECOVER_RETURN(dst);
 
     Data *lodData = dst->lodData.data();
     Data *srcData = currentNonLodData();
 
     const int lod = lodData->levelOfDetail();
 
     updateLodDataManager(srcData->dataManager().data(), lodData->dataManager().data(),
                          QPoint(srcData->x(), srcData->y()),
                          QPoint(lodData->x(), lodData->y()),
                          originalRect, lod);
 }
 
 void KisPaintDevice::Private::generateLodCloneDevice(KisPaintDeviceSP dst, const QRect &originalRect, int lod)
 {
     KIS_SAFE_ASSERT_RECOVER_RETURN(fastBitBltPossible(dst));
 
     Data *srcData = currentNonLodData();
     updateLodDataManager(srcData->dataManager().data(), dst->dataManager().data(),
                          QPoint(srcData->x(), srcData->y()),
                          QPoint(dst->x(), dst->y()),
                          originalRect, lod);
 }
 
 void KisPaintDevice::Private::uploadLodDataStruct(LodDataStruct *_dst)
 {
     LodDataStructImpl *dst = dynamic_cast<LodDataStructImpl*>(_dst);
     KIS_SAFE_ASSERT_RECOVER_RETURN(dst);
 
     KIS_SAFE_ASSERT_RECOVER_RETURN(
         dst->lodData->levelOfDetail() == defaultBounds->currentLevelOfDetail());
 
     ensureLodDataPresent();
 
     m_lodData->prepareClone(dst->lodData.data());
     m_lodData->dataManager()->bitBltRough(dst->lodData->dataManager(), dst->lodData->dataManager()->extent());
 }
 
 void KisPaintDevice::Private::transferFromData(Data *data, KisPaintDeviceSP targetDevice)
 {
     QRect extent = data->dataManager()->extent();
     extent.translate(data->x(), data->y());
 
     targetDevice->m_d->prepareCloneImpl(q, data);
     targetDevice->m_d->currentStrategy()->fastBitBltRough(data->dataManager(), extent);
 }
 
 void KisPaintDevice::Private::writeFrameToDevice(int frameId, KisPaintDeviceSP targetDevice)
 {
     DataSP data = m_frames[frameId];
     transferFromData(data.data(), targetDevice);
 }
 
 void KisPaintDevice::Private::uploadFrame(int srcFrameId, int dstFrameId, KisPaintDeviceSP srcDevice)
 {
     DataSP dstData = m_frames[dstFrameId];
     KIS_ASSERT_RECOVER_RETURN(dstData);
 
     DataSP srcData = srcDevice->m_d->m_frames[srcFrameId];
     KIS_ASSERT_RECOVER_RETURN(srcData);
 
     uploadFrameData(srcData, dstData);
 }
 
 void KisPaintDevice::Private::uploadFrame(int dstFrameId, KisPaintDeviceSP srcDevice)
 {
     DataSP dstData = m_frames[dstFrameId];
     KIS_ASSERT_RECOVER_RETURN(dstData);
 
     DataSP srcData = srcDevice->m_d->m_data;
     KIS_ASSERT_RECOVER_RETURN(srcData);
 
     uploadFrameData(srcData, dstData);
 }
 
 void KisPaintDevice::Private::uploadFrameData(DataSP srcData, DataSP dstData)
 {
     if (srcData->colorSpace() != dstData->colorSpace() &&
         *srcData->colorSpace() != *dstData->colorSpace()) {
 
         KUndo2Command tempCommand;
 
         srcData = toQShared(new Data(q, srcData.data(), true));
         srcData->convertDataColorSpace(dstData->colorSpace(),
                                        KoColorConversionTransformation::internalRenderingIntent(),
                                        KoColorConversionTransformation::internalConversionFlags(),
                                        &tempCommand);
     }
 
     /* If the destination data doesn't share a default pixel value
      * with src, we should make sure that the default pixel is set
      * properly before clearing and writing contents.
      */
     const int defaultPixelcmp =
             memcmp(srcData->dataManager()->defaultPixel(),
                    dstData->dataManager()->defaultPixel(),
                    dstData->dataManager()->pixelSize());
     if (defaultPixelcmp != 0) {
         dstData->dataManager()->setDefaultPixel(srcData->dataManager()->defaultPixel());
     }
 
     dstData->dataManager()->clear();
     dstData->cache()->invalidate();
 
     const QRect rect = srcData->dataManager()->extent();
     dstData->dataManager()->bitBltRough(srcData->dataManager(), rect);
     dstData->setX(srcData->x());
     dstData->setY(srcData->y());
 }
 
 void KisPaintDevice::Private::tesingFetchLodDevice(KisPaintDeviceSP targetDevice)
 {
     Data *data = m_lodData.data();
     Q_ASSERT(data);
 
     transferFromData(data, targetDevice);
 }
 
 class KisPaintDevice::Private::DeviceChangeProfileCommand : public KUndo2Command
 {
 public:
     DeviceChangeProfileCommand(KisPaintDeviceSP device, KUndo2Command *parent = 0)
         : KUndo2Command(parent),
           m_device(device)
     {
     }
 
     virtual void emitNotifications()
     {
         m_device->emitProfileChanged();
     }
 
     void redo() override
     {
         if (m_firstRun) {
             m_firstRun = false;
             return;
         }
 
         KUndo2Command::redo();
         emitNotifications();
     }
 
     void undo() override
     {
         KUndo2Command::undo();
         emitNotifications();
     }
 
 protected:
     KisPaintDeviceSP m_device;
 
 private:
     bool m_firstRun {true};
 };
 
 class KisPaintDevice::Private::DeviceChangeColorSpaceCommand : public DeviceChangeProfileCommand
 {
 public:
     DeviceChangeColorSpaceCommand(KisPaintDeviceSP device, KUndo2Command *parent = 0)
         : DeviceChangeProfileCommand(device, parent)
     {
     }
 
     void emitNotifications() override
     {
         m_device->emitColorSpaceChanged();
     }
 };
 
 void KisPaintDevice::Private::convertColorSpace(const KoColorSpace *dstColorSpace,
                                                 KoColorConversionTransformation::Intent renderingIntent,
                                                 KoColorConversionTransformation::ConversionFlags conversionFlags,
                                                 KUndo2Command *parentCommand,
                                                 KoUpdater *progressUpdater)
 {
     QList<Data*> dataObjects = allDataObjects();
     if (dataObjects.isEmpty()) return;
 
     KUndo2Command *mainCommand =
         parentCommand ? new DeviceChangeColorSpaceCommand(q, parentCommand) : 0;
 
     Q_FOREACH (Data *data, dataObjects) {
         if (!data) continue;
 
         data->convertDataColorSpace(dstColorSpace, renderingIntent, conversionFlags, mainCommand, progressUpdater);
     }
 
     q->emitColorSpaceChanged();
 }
 
 bool KisPaintDevice::Private::assignProfile(const KoColorProfile * profile, KUndo2Command *parentCommand)
 {
     if (!profile) return false;
 
     const KoColorSpace *dstColorSpace =
         KoColorSpaceRegistry::instance()->colorSpace(colorSpace()->colorModelId().id(), colorSpace()->colorDepthId().id(), profile);
     if (!dstColorSpace) return false;
 
     KUndo2Command *mainCommand =
         parentCommand ? new DeviceChangeColorSpaceCommand(q, parentCommand) : 0;
 
 
     QList<Data*> dataObjects = allDataObjects();
     Q_FOREACH (Data *data, dataObjects) {
         if (!data) continue;
         data->assignColorSpace(dstColorSpace, mainCommand);
     }
     q->emitProfileChanged();
 
     // no undo information is provided here
     return true;
 }
 
 KUndo2Command *KisPaintDevice::Private::reincarnateWithDetachedHistory(bool copyContent)
 {
     KUndo2Command *mainCommand = new KUndo2Command();
     currentData()->reincarnateWithDetachedHistory(copyContent, mainCommand);
     return mainCommand;
 }
 
 void KisPaintDevice::Private::init(const KoColorSpace *cs, const quint8 *defaultPixel)
 {
     QList<Data*> dataObjects = allDataObjects();
     Q_FOREACH (Data *data, dataObjects) {
         if (!data) continue;
 
         KisDataManagerSP dataManager = new KisDataManager(cs->pixelSize(), defaultPixel);
         data->init(cs, dataManager);
     }
 }
 
 KisPaintDevice::KisPaintDevice(const KoColorSpace * colorSpace, const QString& name)
     : QObject(0)
     , m_d(new Private(this))
 {
     init(colorSpace, new KisDefaultBounds(), 0, name);
 }
 
 KisPaintDevice::KisPaintDevice(KisNodeWSP parent, const KoColorSpace * colorSpace, KisDefaultBoundsBaseSP defaultBounds, const QString& name)
     : QObject(0)
     , m_d(new Private(this))
 {
     init(colorSpace, defaultBounds, parent, name);
 }
 
 void KisPaintDevice::init(const KoColorSpace *colorSpace,
                           KisDefaultBoundsBaseSP defaultBounds,
                           KisNodeWSP parent, const QString& name)
 {
     Q_ASSERT(colorSpace);
     setObjectName(name);
 
     // temporary def. bounds object for the initialization phase only
     m_d->defaultBounds = m_d->transitionalDefaultBounds;
 
     if (!defaultBounds) {
         // Reuse transitionalDefaultBounds here. Change if you change
         // semantics of transitionalDefaultBounds
         defaultBounds = m_d->transitionalDefaultBounds;
     }
 
     QScopedArrayPointer<quint8> defaultPixel(new quint8[colorSpace->pixelSize()]);
     colorSpace->fromQColor(Qt::transparent, defaultPixel.data());
     m_d->init(colorSpace, defaultPixel.data());
 
     Q_ASSERT(m_d->colorSpace());
 
     setDefaultBounds(defaultBounds);
     setParentNode(parent);
 }
 
 KisPaintDevice::KisPaintDevice(const KisPaintDevice& rhs, KritaUtils::DeviceCopyMode copyMode, KisNode *newParentNode)
     : QObject()
     , KisShared()
     , m_d(new Private(this))
 {
     if (this != &rhs) {
         makeFullCopyFrom(rhs, copyMode, newParentNode);
     }
 }
 
 void KisPaintDevice::makeFullCopyFrom(const KisPaintDevice &rhs, KritaUtils::DeviceCopyMode copyMode, KisNode *newParentNode)
 {
     // temporary def. bounds object for the initialization phase only
     m_d->defaultBounds = m_d->transitionalDefaultBounds;
 
     // copy data objects with or without frames
     m_d->cloneAllDataObjects(rhs.m_d, copyMode == KritaUtils::CopyAllFrames);
 
     if (copyMode == KritaUtils::CopyAllFrames && rhs.m_d->framesInterface) {
         KIS_ASSERT_RECOVER_RETURN(rhs.m_d->framesInterface);
         KIS_ASSERT_RECOVER_RETURN(rhs.m_d->contentChannel);
         m_d->framesInterface.reset(new KisPaintDeviceFramesInterface(this));
         m_d->contentChannel.reset(new KisRasterKeyframeChannel(*rhs.m_d->contentChannel.data(), this));
     }
 
     setDefaultBounds(rhs.m_d->defaultBounds);
     setParentNode(newParentNode);
 }
 
 KisPaintDevice::~KisPaintDevice()
 {
     delete m_d;
 }
 
 void KisPaintDevice::setProjectionDevice(bool value)
 {
     m_d->isProjectionDevice = value;
 }
 
 void KisPaintDevice::prepareClone(KisPaintDeviceSP src)
 {
     m_d->prepareClone(src);
 }
 
 void KisPaintDevice::makeCloneFrom(KisPaintDeviceSP src, const QRect &rect)
 {
     prepareClone(src);
 
     // we guarantee that *this is totally empty, so copy pixels that
     // are areally present on the source image only
     const QRect optimizedRect = rect & src->extent();
 
     fastBitBlt(src, optimizedRect);
 }
 
 void KisPaintDevice::makeCloneFromRough(KisPaintDeviceSP src, const QRect &minimalRect)
 {
     prepareClone(src);
 
     // we guarantee that *this is totally empty, so copy pixels that
     // are areally present on the source image only
     const QRect optimizedRect = minimalRect & src->extent();
 
     fastBitBltRough(src, optimizedRect);
 }
 
 void KisPaintDevice::setDirty()
 {
     m_d->cache()->invalidate();
     if (m_d->parent.isValid())
         m_d->parent->setDirty();
 }
 
 void KisPaintDevice::setDirty(const QRect & rc)
 {
     m_d->cache()->invalidate();
     if (m_d->parent.isValid())
         m_d->parent->setDirty(rc);
 }
 
 void KisPaintDevice::setDirty(const KisRegion &region)
 {
     m_d->cache()->invalidate();
     if (m_d->parent.isValid())
         m_d->parent->setDirty(region);
 }
 
 void KisPaintDevice::setDirty(const QVector<QRect> &rects)
 {
     m_d->cache()->invalidate();
     if (m_d->parent.isValid())
         m_d->parent->setDirty(rects);
 }
 
 void KisPaintDevice::requestTimeSwitch(int time)
 {
     if (m_d->parent.isValid()) {
         m_d->parent->requestTimeSwitch(time);
     }
 }
 
 int KisPaintDevice::sequenceNumber() const
 {
     return m_d->cache()->sequenceNumber();
 }
 
 void KisPaintDevice::estimateMemoryStats(qint64 &imageData, qint64 &temporaryData, qint64 &lodData) const
 {
     m_d->estimateMemoryStats(imageData, temporaryData, lodData);
 }
 
 void KisPaintDevice::setParentNode(KisNodeWSP parent)
 {
     m_d->parent = parent;
 }
 
 // for testing purposes only
 KisNodeWSP KisPaintDevice::parentNode() const
 {
     return m_d->parent;
 }
 
 void KisPaintDevice::setDefaultBounds(KisDefaultBoundsBaseSP defaultBounds)
 {
     m_d->defaultBounds = defaultBounds;
     m_d->cache()->invalidate();
 }
 
 KisDefaultBoundsBaseSP KisPaintDevice::defaultBounds() const
 {
     return m_d->defaultBounds;
 }
 
 void KisPaintDevice::moveTo(const QPoint &pt)
 {
     m_d->currentStrategy()->move(pt);
     m_d->cache()->invalidate();
 }
 
 QPoint KisPaintDevice::offset() const
 {
     return QPoint(x(), y());
 }
 
 void KisPaintDevice::moveTo(qint32 x, qint32 y)
 {
     moveTo(QPoint(x, y));
 }
 
 void KisPaintDevice::setX(qint32 x)
 {
     moveTo(QPoint(x, m_d->y()));
 }
 
 void KisPaintDevice::setY(qint32 y)
 {
     moveTo(QPoint(m_d->x(), y));
 }
 
 qint32 KisPaintDevice::x() const
 {
     return m_d->x();
 }
 
 qint32 KisPaintDevice::y() const
 {
     return m_d->y();
 }
 
 void KisPaintDevice::extent(qint32 &x, qint32 &y, qint32 &w, qint32 &h) const
 {
     QRect rc = extent();
     x = rc.x();
     y = rc.y();
     w = rc.width();
     h = rc.height();
 }
 
 QRect KisPaintDevice::extent() const
 {
     return m_d->currentStrategy()->extent();
 }
 
 KisRegion KisPaintDevice::region() const
 {
     return m_d->currentStrategy()->region();
 }
 
 QRect KisPaintDevice::nonDefaultPixelArea() const
 {
     return m_d->cache()->nonDefaultPixelArea();
 }
 
 QRect KisPaintDevice::exactBounds() const
 {
     return m_d->cache()->exactBounds();
 }
 
 QRect KisPaintDevice::exactBoundsAmortized() const
 {
     return m_d->cache()->exactBoundsAmortized();
 }
 
 namespace Impl
 {
 
 struct CheckFullyTransparent {
     CheckFullyTransparent(const KoColorSpace *colorSpace)
         : m_colorSpace(colorSpace)
     {
     }
 
     bool isPixelEmpty(const quint8 *pixelData)
     {
         return m_colorSpace->opacityU8(pixelData) == OPACITY_TRANSPARENT_U8;
     }
 
 private:
     const KoColorSpace *m_colorSpace;
 };
 
 struct CheckNonDefault {
     CheckNonDefault(int pixelSize, const quint8 *defaultPixel)
         : m_pixelSize(pixelSize),
           m_defaultPixel(defaultPixel)
     {
     }
 
     bool isPixelEmpty(const quint8 *pixelData)
     {
         return memcmp(m_defaultPixel, pixelData, m_pixelSize) == 0;
     }
 
 private:
     int m_pixelSize;
     const quint8 *m_defaultPixel;
 };
 
 template <class ComparePixelOp>
 QRect calculateExactBoundsImpl(const KisPaintDevice *device, const QRect &startRect, const QRect &endRect, ComparePixelOp compareOp)
 {
     if (startRect == endRect) return startRect;
 
     // the passed extent might have weird invalid structure that
     // can overflow integer precision when calling startRect.right()
     if (!startRect.isValid()) return QRect();
 
     // Solution n°2
     int  x, y, w, h;
     int boundLeft, boundTop, boundRight, boundBottom;
     int endDirN, endDirE, endDirS, endDirW;
 
     startRect.getRect(&x, &y, &w, &h);
 
     if (endRect.isEmpty()) {
         endDirS = startRect.bottom();
         endDirN = startRect.top();
         endDirE = startRect.right();
         endDirW = startRect.left();
         startRect.getCoords(&boundLeft, &boundTop, &boundRight, &boundBottom);
     } else {
         endDirS = endRect.top() - 1;
         endDirN = endRect.bottom() + 1;
         endDirE = endRect.left() - 1;
         endDirW = endRect.right() + 1;
         endRect.getCoords(&boundLeft, &boundTop, &boundRight, &boundBottom);
     }
 
     // XXX: a small optimization is possible by using H/V line iterators in the first
     //      and third cases, at the cost of making the code a bit more complex
 
     KisRandomConstAccessorSP accessor = device->createRandomConstAccessorNG();
 
     bool found = false;
     {
         for (qint32 y2 = y; y2 <= endDirS; ++y2) {
             for (qint32 x2 = x; x2 < x + w || found; ++ x2) {
                 accessor->moveTo(x2, y2);
                 if (!compareOp.isPixelEmpty(accessor->rawDataConst())) {
                     boundTop = y2;
                     found = true;
                     break;
                 }
             }
             if (found) break;
         }
     }
 
     /**
      * If the first pass hasn't found any opaque pixel, there is no
      * reason to check that 3 more times. They will not appear in the
      * meantime. Just return an empty bounding rect.
      */
     if (!found && endRect.isEmpty()) {
         return QRect();
     }
 
     found = false;
 
     for (qint32 y2 = y + h - 1; y2 >= endDirN ; --y2) {
         for (qint32 x2 = x + w - 1; x2 >= x || found; --x2) {
             accessor->moveTo(x2, y2);
             if (!compareOp.isPixelEmpty(accessor->rawDataConst())) {
                 boundBottom = y2;
                 found = true;
                 break;
             }
         }
         if (found) break;
     }
     found = false;
 
     {
         for (qint32 x2 = x; x2 <= endDirE ; ++x2) {
             for (qint32 y2 = y; y2 < y + h || found; ++y2) {
                 accessor->moveTo(x2, y2);
                 if (!compareOp.isPixelEmpty(accessor->rawDataConst())) {
                     boundLeft = x2;
                     found = true;
                     break;
                 }
             }
             if (found) break;
         }
     }
 
     found = false;
 
     // Look for right edge )
     {
 
         for (qint32 x2 = x + w - 1; x2 >= endDirW; --x2) {
             for (qint32 y2 = y + h - 1; y2 >= y || found; --y2) {
                 accessor->moveTo(x2, y2);
                 if (!compareOp.isPixelEmpty(accessor->rawDataConst())) {
                     boundRight = x2;
                     found = true;
                     break;
                 }
             }
             if (found) break;
         }
     }
 
     return QRect(boundLeft, boundTop,
                  boundRight - boundLeft + 1,
                  boundBottom - boundTop + 1);
 }
 
 }
 
 QRect KisPaintDevice::calculateExactBounds(bool nonDefaultOnly) const
 {
     QRect startRect = extent();
     QRect endRect;
 
     quint8 defaultOpacity = defaultPixel().opacityU8();
     if (defaultOpacity != OPACITY_TRANSPARENT_U8) {
         if (!nonDefaultOnly) {
             /**
              * We will calculate exact bounds only outside of the
              * image bounds, and that'll be nondefault area only.
              */
 
             endRect = defaultBounds()->bounds();
             nonDefaultOnly = true;
 
         } else {
             startRect = region().boundingRect();
         }
     }
 
     if (nonDefaultOnly) {
         const KoColor defaultPixel = this->defaultPixel();
         Impl::CheckNonDefault compareOp(pixelSize(), defaultPixel.data());
         endRect = Impl::calculateExactBoundsImpl(this, startRect, endRect, compareOp);
     } else {
         Impl::CheckFullyTransparent compareOp(m_d->colorSpace());
         endRect = Impl::calculateExactBoundsImpl(this, startRect, endRect, compareOp);
     }
 
     return endRect;
 }
 
 KisRegion KisPaintDevice::regionExact() const
 {
     QVector<QRect> sourceRects = region().rects();
     QVector<QRect> resultRects;
 
     const KoColor defaultPixel = this->defaultPixel();
     Impl::CheckNonDefault compareOp(pixelSize(), defaultPixel.data());
 
     Q_FOREACH (const QRect &rc1, sourceRects) {
         const int patchSize = 64;
         QVector<QRect> smallerRects = KritaUtils::splitRectIntoPatches(rc1, QSize(patchSize, patchSize));
         Q_FOREACH (const QRect &rc2, smallerRects) {
 
             const QRect result =
                 Impl::calculateExactBoundsImpl(this, rc2, QRect(), compareOp);
 
             if (!result.isEmpty()) {
                 resultRects << result;
             }
         }
     }
     return KisRegion(std::move(resultRects));
 }
 
 void KisPaintDevice::crop(qint32 x, qint32 y, qint32 w, qint32 h)
 {
     crop(QRect(x, y, w, h));
 }
 
 
 void KisPaintDevice::crop(const QRect &rect)
 {
     m_d->currentStrategy()->crop(rect);
 }
 
 void KisPaintDevice::purgeDefaultPixels()
 {
     KisDataManagerSP dm = m_d->dataManager();
     dm->purge(dm->extent());
 }
 
 void KisPaintDevice::setDefaultPixel(const KoColor &defPixel)
 {
     KoColor color(defPixel);
     color.convertTo(colorSpace());
 
     m_d->dataManager()->setDefaultPixel(color.data());
     m_d->cache()->invalidate();
 }
 
 KoColor KisPaintDevice::defaultPixel() const
 {
     return KoColor(m_d->dataManager()->defaultPixel(), colorSpace());
 }
 
 void KisPaintDevice::clear()
 {
     m_d->dataManager()->clear();
     m_d->cache()->invalidate();
 }
 
 void KisPaintDevice::clear(const QRect & rc)
 {
     m_d->currentStrategy()->clear(rc);
 }
 
 void KisPaintDevice::fill(const QRect & rc, const KoColor &color)
 {
     KIS_ASSERT_RECOVER_RETURN(*color.colorSpace() == *colorSpace());
     m_d->currentStrategy()->fill(rc, color.data());
 }
 
 void KisPaintDevice::fill(qint32 x, qint32 y, qint32 w, qint32 h, const quint8 *fillPixel)
 {
     m_d->currentStrategy()->fill(QRect(x, y, w, h), fillPixel);
 }
 
 
 bool KisPaintDevice::write(KisPaintDeviceWriter &store)
 {
     return m_d->dataManager()->write(store);
 }
 
 bool KisPaintDevice::read(QIODevice *stream)
 {
     bool retval;
 
     retval = m_d->dataManager()->read(stream);
     m_d->cache()->invalidate();
 
     return retval;
 }
 
 void KisPaintDevice::emitColorSpaceChanged()
 {
     emit colorSpaceChanged(m_d->colorSpace());
 }
 
 void KisPaintDevice::emitProfileChanged()
 {
     emit profileChanged(m_d->colorSpace()->profile());
 }
 
 void KisPaintDevice::convertTo(const KoColorSpace *dstColorSpace,
                                KoColorConversionTransformation::Intent renderingIntent,
                                KoColorConversionTransformation::ConversionFlags conversionFlags,
                                KUndo2Command *parentCommand,
                                KoUpdater *progressUpdater)
 {
     m_d->convertColorSpace(dstColorSpace, renderingIntent, conversionFlags, parentCommand, progressUpdater);
 }
 
 bool KisPaintDevice::setProfile(const KoColorProfile * profile, KUndo2Command *parentCommand)
 {
     return m_d->assignProfile(profile, parentCommand);
 }
 
 KUndo2Command *KisPaintDevice::reincarnateWithDetachedHistory(bool copyContent)
 {
     return m_d->reincarnateWithDetachedHistory(copyContent);
 }
 
 KisDataManagerSP KisPaintDevice::dataManager() const
 {
     return m_d->dataManager();
 }
 
 void KisPaintDevice::convertFromQImage(const QImage& _image, const KoColorProfile *profile,
                                        qint32 offsetX, qint32 offsetY)
 {
     QImage image = _image;
 
     if (image.format() != QImage::Format_ARGB32) {
         image = image.convertToFormat(QImage::Format_ARGB32);
     }
     // Don't convert if not no profile is given and both paint dev and qimage are rgba.
     if (!profile && colorSpace()->id() == "RGBA") {
         writeBytes(image.constBits(), offsetX, offsetY, image.width(), image.height());
     } else {
         try {
             quint8 * dstData = new quint8[image.width() * image.height() * pixelSize()];
             KoColorSpaceRegistry::instance()
             ->colorSpace(RGBAColorModelID.id(), Integer8BitsColorDepthID.id(), profile)
             ->convertPixelsTo(image.constBits(), dstData, colorSpace(), image.width() * image.height(),
                               KoColorConversionTransformation::internalRenderingIntent(),
                               KoColorConversionTransformation::internalConversionFlags());
 
             writeBytes(dstData, offsetX, offsetY, image.width(), image.height());
             delete[] dstData;
         } catch (const std::bad_alloc&) {
             warnKrita << "KisPaintDevice::convertFromQImage: Could not allocate" << image.width() * image.height() * pixelSize() << "bytes";
             return;
         }
     }
     m_d->cache()->invalidate();
 }
 
 QImage KisPaintDevice::convertToQImage(const KoColorProfile *dstProfile, KoColorConversionTransformation::Intent renderingIntent, KoColorConversionTransformation::ConversionFlags conversionFlags) const
 {
     qint32 x1;
     qint32 y1;
     qint32 w;
     qint32 h;
 
     QRect rc = exactBounds();
     x1 = rc.x();
     y1 = rc.y();
     w = rc.width();
     h = rc.height();
 
     return convertToQImage(dstProfile, x1, y1, w, h, renderingIntent, conversionFlags);
 }
 
 QImage KisPaintDevice::convertToQImage(const KoColorProfile *dstProfile,
                                        const QRect &rc,
                                        KoColorConversionTransformation::Intent renderingIntent,
                                        KoColorConversionTransformation::ConversionFlags conversionFlags) const
 {
     return convertToQImage(dstProfile,
                            rc.x(), rc.y(), rc.width(), rc.height(),
                            renderingIntent, conversionFlags);
 }
 
 QImage KisPaintDevice::convertToQImage(const KoColorProfile *dstProfile, qint32 x1, qint32 y1, qint32 w, qint32 h, KoColorConversionTransformation::Intent renderingIntent, KoColorConversionTransformation::ConversionFlags conversionFlags) const
 {
 
     if (w < 0)
         return QImage();
 
     if (h < 0)
         return QImage();
 
     quint8 *data = 0;
     try {
         data = new quint8 [w * h * pixelSize()];
     } catch (const std::bad_alloc&) {
         warnKrita << "KisPaintDevice::convertToQImage std::bad_alloc for " << w << " * " << h << " * " << pixelSize();
         //delete[] data; // data is not allocated, so don't free it
         return QImage();
     }
     Q_CHECK_PTR(data);
 
     // XXX: Is this really faster than converting line by line and building the QImage directly?
     //      This copies potentially a lot of data.
     readBytes(data, x1, y1, w, h);
     QImage image = colorSpace()->convertToQImage(data, w, h, dstProfile, renderingIntent, conversionFlags);
     delete[] data;
 
     return image;
 }
 
 inline bool moveBy(KisSequentialConstIterator& iter, int numPixels)
 {
     int pos = 0;
     while (pos < numPixels) {
         int step = std::min(iter.nConseqPixels(), numPixels - pos);
         if (!iter.nextPixels(step))
             return false;
         pos += step;
     }
     return true;
 }
 
 static KisPaintDeviceSP createThumbnailDeviceInternal(const KisPaintDevice* srcDev, qint32 srcX0, qint32 srcY0, qint32 srcWidth, qint32 srcHeight, qint32 w, qint32 h, QRect outputRect)
 {
     KisPaintDeviceSP thumbnail = new KisPaintDevice(srcDev->colorSpace());
     qint32 pixelSize = srcDev->pixelSize();
 
     KisRandomConstAccessorSP srcIter = srcDev->createRandomConstAccessorNG();
     KisRandomAccessorSP dstIter = thumbnail->createRandomAccessorNG();
 
     for (qint32 y = outputRect.y(); y < outputRect.y() + outputRect.height(); ++y) {
         qint32 iY = srcY0 + (y * srcHeight) / h;
         for (qint32 x = outputRect.x(); x < outputRect.x() + outputRect.width(); ++x) {
             qint32 iX = srcX0 + (x * srcWidth) / w;
             srcIter->moveTo(iX, iY);
             dstIter->moveTo(x,  y);
             memcpy(dstIter->rawData(), srcIter->rawDataConst(), pixelSize);
         }
     }
     return thumbnail;
 }
 
 QSize fixThumbnailSize(QSize size)
 {
     if (!size.width() && size.height()) {
         size.setWidth(1);
     }
 
     if (size.width() && !size.height()) {
         size.setHeight(1);
     }
 
     return size;
 }
 
 KisPaintDeviceSP KisPaintDevice::createThumbnailDevice(qint32 w, qint32 h, QRect rect, QRect outputRect) const
 {
     QSize thumbnailSize(w, h);
 
     QRect imageRect = rect.isValid() ? rect : extent();
 
     if ((thumbnailSize.width() > imageRect.width()) || (thumbnailSize.height() > imageRect.height())) {
         thumbnailSize.scale(imageRect.size(), Qt::KeepAspectRatio);
     }
 
     thumbnailSize = fixThumbnailSize(thumbnailSize);
 
     //can't create thumbnail for an empty device, e.g. layer thumbnail for empty image
     if (imageRect.isEmpty() || thumbnailSize.isEmpty()) {
         return new KisPaintDevice(colorSpace());
     }
 
     int srcWidth, srcHeight;
     int srcX0, srcY0;
     imageRect.getRect(&srcX0, &srcY0, &srcWidth, &srcHeight);
 
     if (!outputRect.isValid()) {
         outputRect = QRect(0, 0, w, h);
     }
 
     KisPaintDeviceSP thumbnail = createThumbnailDeviceInternal(this, imageRect.x(), imageRect.y(), imageRect.width(), imageRect.height(),
                                  thumbnailSize.width(), thumbnailSize.height(), outputRect);
 
     return thumbnail;
 }
 
 KisPaintDeviceSP KisPaintDevice::createThumbnailDeviceOversampled(qint32 w, qint32 h, qreal oversample, QRect rect,  QRect outputTileRect) const
 {
     QSize thumbnailSize(w, h);
     qreal oversampleAdjusted = qMax(oversample, 1.);
     QSize thumbnailOversampledSize = oversampleAdjusted * thumbnailSize;
 
     QRect outputRect;
     QRect imageRect = rect.isValid() ? rect : extent();
 
     qint32 hstart = thumbnailOversampledSize.height();
 
     if ((thumbnailOversampledSize.width() > imageRect.width()) || (thumbnailOversampledSize.height() > imageRect.height())) {
         thumbnailOversampledSize.scale(imageRect.size(), Qt::KeepAspectRatio);
     }
 
     thumbnailOversampledSize = fixThumbnailSize(thumbnailOversampledSize);
 
     //can't create thumbnail for an empty device, e.g. layer thumbnail for empty image
     if (imageRect.isEmpty() || thumbnailSize.isEmpty() || thumbnailOversampledSize.isEmpty()) {
         return new KisPaintDevice(colorSpace());
     }
 
     oversampleAdjusted *= (hstart > 0) ? ((qreal)thumbnailOversampledSize.height() / hstart) : 1.; //readjusting oversample ratio, given that we had to adjust thumbnail size
 
     outputRect = QRect(0, 0, thumbnailOversampledSize.width(), thumbnailOversampledSize.height());
 
     if (outputTileRect.isValid()) {
         //compensating output rectangle for oversampling
         outputTileRect = QRect(oversampleAdjusted * outputTileRect.topLeft(), oversampleAdjusted * outputTileRect.bottomRight());
         outputRect = outputRect.intersected(outputTileRect);
     }
 
     KisPaintDeviceSP thumbnail = createThumbnailDeviceInternal(this, imageRect.x(), imageRect.y(), imageRect.width(), imageRect.height(),
                                  thumbnailOversampledSize.width(), thumbnailOversampledSize.height(), outputRect);
 
     if (oversample != 1. && oversampleAdjusted != 1.) {
         KoDummyUpdater updater;
         KisTransformWorker worker(thumbnail, 1 / oversampleAdjusted, 1 / oversampleAdjusted, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0,
                                   &updater, KisFilterStrategyRegistry::instance()->value("Bilinear"));
         worker.run();
     }
     return thumbnail;
 }
 
 QImage KisPaintDevice::createThumbnail(qint32 w, qint32 h, QRect rect, qreal oversample, KoColorConversionTransformation::Intent renderingIntent, KoColorConversionTransformation::ConversionFlags conversionFlags)
 {
     QSize size = fixThumbnailSize(QSize(w, h));
 
     KisPaintDeviceSP dev = createThumbnailDeviceOversampled(size.width(), size.height(), oversample, rect);
     QImage thumbnail = dev->convertToQImage(KoColorSpaceRegistry::instance()->rgb8()->profile(), 0, 0, w, h, renderingIntent, conversionFlags);
     return thumbnail;
 }
 
 QImage KisPaintDevice::createThumbnail(qint32 w, qint32 h, qreal oversample, KoColorConversionTransformation::Intent renderingIntent, KoColorConversionTransformation::ConversionFlags conversionFlags)
 {
     QSize size = fixThumbnailSize(QSize(w, h));
 
     return m_d->cache()->createThumbnail(size.width(), size.height(), oversample, renderingIntent, conversionFlags);
 }
 
 QImage KisPaintDevice::createThumbnail(qint32 maxw, qint32 maxh,
                                        Qt::AspectRatioMode aspectRatioMode,
                                        qreal oversample, KoColorConversionTransformation::Intent renderingIntent,
                                        KoColorConversionTransformation::ConversionFlags conversionFlags)
 {
     const QRect deviceExtent = extent();
     const QSize thumbnailSize = deviceExtent.size().scaled(maxw, maxh, aspectRatioMode);
     return createThumbnail(thumbnailSize.width(), thumbnailSize.height(),
                            oversample, renderingIntent, conversionFlags);
 }
 
 KisHLineIteratorSP KisPaintDevice::createHLineIteratorNG(qint32 x, qint32 y, qint32 w)
 {
     m_d->cache()->invalidate();
     return m_d->currentStrategy()->createHLineIteratorNG(m_d->dataManager().data(), x, y, w, m_d->x(), m_d->y());
 }
 
 KisHLineConstIteratorSP KisPaintDevice::createHLineConstIteratorNG(qint32 x, qint32 y, qint32 w) const
 {
     return m_d->currentStrategy()->createHLineConstIteratorNG(m_d->dataManager().data(), x, y, w, m_d->x(), m_d->y());
 }
 
 KisVLineIteratorSP KisPaintDevice::createVLineIteratorNG(qint32 x, qint32 y, qint32 w)
 {
     m_d->cache()->invalidate();
     return m_d->currentStrategy()->createVLineIteratorNG(x, y, w);
 }
 
 KisVLineConstIteratorSP KisPaintDevice::createVLineConstIteratorNG(qint32 x, qint32 y, qint32 w) const
 {
     return m_d->currentStrategy()->createVLineConstIteratorNG(x, y, w);
 }
 
 KisRepeatHLineConstIteratorSP KisPaintDevice::createRepeatHLineConstIterator(qint32 x, qint32 y, qint32 w, const QRect& _dataWidth) const
 {
     return new KisRepeatHLineConstIteratorNG(m_d->dataManager().data(), x, y, w, m_d->x(), m_d->y(), _dataWidth, m_d->cacheInvalidator());
 }
 
 KisRepeatVLineConstIteratorSP KisPaintDevice::createRepeatVLineConstIterator(qint32 x, qint32 y, qint32 h, const QRect& _dataWidth) const
 {
     return new KisRepeatVLineConstIteratorNG(m_d->dataManager().data(), x, y, h, m_d->x(), m_d->y(), _dataWidth, m_d->cacheInvalidator());
 }
 
 KisRandomAccessorSP KisPaintDevice::createRandomAccessorNG()
 {
     m_d->cache()->invalidate();
     return m_d->currentStrategy()->createRandomAccessorNG();
 }
 
 KisRandomConstAccessorSP KisPaintDevice::createRandomConstAccessorNG() const
 {
     return m_d->currentStrategy()->createRandomConstAccessorNG();
 }
 
 KisRandomSubAccessorSP KisPaintDevice::createRandomSubAccessor() const
 {
     KisPaintDevice* pd = const_cast<KisPaintDevice*>(this);
     return new KisRandomSubAccessor(pd);
 }
 
 void KisPaintDevice::clearSelection(KisSelectionSP selection)
 {
     const KoColorSpace *colorSpace = m_d->colorSpace();
     const QRect r = selection->selectedExactRect();
 
     if (r.isValid()) {
 
         {
             KisHLineIteratorSP devIt = createHLineIteratorNG(r.x(), r.y(), r.width());
             KisHLineConstIteratorSP selectionIt = selection->projection()->createHLineConstIteratorNG(r.x(), r.y(), r.width());
 
             const KoColor defaultPixel = this->defaultPixel();
             bool transparentDefault = (defaultPixel.opacityU8() == OPACITY_TRANSPARENT_U8);
             for (qint32 y = 0; y < r.height(); y++) {
 
                 do {
                     // XXX: Optimize by using stretches
                     colorSpace->applyInverseAlphaU8Mask(devIt->rawData(), selectionIt->rawDataConst(), 1);
                     if (transparentDefault && colorSpace->opacityU8(devIt->rawData()) == OPACITY_TRANSPARENT_U8) {
                         memcpy(devIt->rawData(), defaultPixel.data(), colorSpace->pixelSize());
                     }
                 } while (devIt->nextPixel() && selectionIt->nextPixel());
                 devIt->nextRow();
                 selectionIt->nextRow();
             }
         }
 
         // purge() must be executed **after** all iterators have been destroyed!
         m_d->dataManager()->purge(r.translated(-m_d->x(), -m_d->y()));
 
         setDirty(r);
     }
 }
 
 bool KisPaintDevice::pixel(qint32 x, qint32 y, QColor *c) const
 {
     KisHLineConstIteratorSP iter = createHLineConstIteratorNG(x, y, 1);
 
     const quint8 *pix = iter->rawDataConst();
 
     if (!pix) return false;
 
     colorSpace()->toQColor(pix, c);
 
     return true;
 }
 
 
 bool KisPaintDevice::pixel(qint32 x, qint32 y, KoColor * kc) const
 {
     KisHLineConstIteratorSP iter = createHLineConstIteratorNG(x, y, 1);
 
     const quint8 *pix = iter->rawDataConst();
 
     if (!pix) return false;
 
     kc->setColor(pix, m_d->colorSpace());
 
     return true;
 }
 
 KoColor KisPaintDevice::pixel(const QPoint &pos) const
 {
     KisHLineConstIteratorSP iter = createHLineConstIteratorNG(pos.x(), pos.y(), 1);
     return KoColor(iter->rawDataConst(), m_d->colorSpace());
 }
 
 bool KisPaintDevice::setPixel(qint32 x, qint32 y, const QColor& c)
 {
     KisHLineIteratorSP iter = createHLineIteratorNG(x, y, 1);
 
     colorSpace()->fromQColor(c, iter->rawData());
     m_d->cache()->invalidate();
     return true;
 }
 
 bool KisPaintDevice::setPixel(qint32 x, qint32 y, const KoColor& kc)
 {
     const quint8 * pix;
     KisHLineIteratorSP iter = createHLineIteratorNG(x, y, 1);
     if (kc.colorSpace() != m_d->colorSpace()) {
         KoColor kc2(kc, m_d->colorSpace());
         pix = kc2.data();
         memcpy(iter->rawData(), pix, m_d->colorSpace()->pixelSize());
     } else {
         pix = kc.data();
         memcpy(iter->rawData(), pix, m_d->colorSpace()->pixelSize());
     }
     m_d->cache()->invalidate();
     return true;
 }
 
 bool KisPaintDevice::fastBitBltPossible(KisPaintDeviceSP src)
 {
     return m_d->fastBitBltPossible(src);
 }
 
 void KisPaintDevice::fastBitBlt(KisPaintDeviceSP src, const QRect &rect)
 {
     m_d->currentStrategy()->fastBitBlt(src, rect);
 }
 
 void KisPaintDevice::fastBitBltOldData(KisPaintDeviceSP src, const QRect &rect)
 {
     m_d->currentStrategy()->fastBitBltOldData(src, rect);
 }
 
 void KisPaintDevice::fastBitBltRough(KisPaintDeviceSP src, const QRect &rect)
 {
     m_d->currentStrategy()->fastBitBltRough(src, rect);
 }
 
 void KisPaintDevice::fastBitBltRoughOldData(KisPaintDeviceSP src, const QRect &rect)
 {
     m_d->currentStrategy()->fastBitBltRoughOldData(src, rect);
 }
 
 void KisPaintDevice::readBytes(quint8 * data, qint32 x, qint32 y, qint32 w, qint32 h) const
 {
     readBytes(data, QRect(x, y, w, h));
 }
 
 void KisPaintDevice::readBytes(quint8 *data, const QRect &rect) const
 {
     m_d->currentStrategy()->readBytes(data, rect);
 }
 
 void KisPaintDevice::writeBytes(const quint8 *data, qint32 x, qint32 y, qint32 w, qint32 h)
 {
     writeBytes(data, QRect(x, y, w, h));
 }
 
 void KisPaintDevice::writeBytes(const quint8 *data, const QRect &rect)
 {
     m_d->currentStrategy()->writeBytes(data, rect);
 }
 
 QVector<quint8*> KisPaintDevice::readPlanarBytes(qint32 x, qint32 y, qint32 w, qint32 h) const
 {
     return m_d->currentStrategy()->readPlanarBytes(x, y, w, h);
 }
 
 void KisPaintDevice::writePlanarBytes(QVector<quint8*> planes, qint32 x, qint32 y, qint32 w, qint32 h)
 {
     m_d->currentStrategy()->writePlanarBytes(planes, x, y, w, h);
 }
 
 
 quint32 KisPaintDevice::pixelSize() const
 {
     quint32 _pixelSize = m_d->colorSpace()->pixelSize();
     Q_ASSERT(_pixelSize > 0);
     return _pixelSize;
 }
 
 quint32 KisPaintDevice::channelCount() const
 {
     quint32 _channelCount = m_d->colorSpace()->channelCount();
     Q_ASSERT(_channelCount > 0);
     return _channelCount;
 }
 
 KisInterstrokeDataSP KisPaintDevice::interstrokeData() const
 {
     return m_d->interstrokeData();
 }
 
 KUndo2Command* KisPaintDevice::createChangeInterstrokeDataCommand(KisInterstrokeDataSP data)
 {
     return m_d->createChangeInterstrokeDataCommand(data);
 }
 
 KisRasterKeyframeChannel *KisPaintDevice::createKeyframeChannel(const KoID &id)
 {
     Q_ASSERT(!m_d->framesInterface);
     m_d->framesInterface.reset(new KisPaintDeviceFramesInterface(this));
 
     Q_ASSERT(!m_d->contentChannel);
     if (m_d->parent.isValid()) {
         m_d->contentChannel.reset(new KisRasterKeyframeChannel(id, this, new KisDefaultBoundsNodeWrapper(m_d->parent)));
     } else {
         //fallback when paint device is isolated / does not belong to a node.
         m_d->contentChannel.reset(new KisRasterKeyframeChannel(id, this, m_d->defaultBounds));
     }
 
     // Raster channels always have at least one frame (representing a static image)
     KUndo2Command tempParentCommand;
     m_d->contentChannel->addKeyframe(0);
 
     return m_d->contentChannel.data();
 }
 
 KisRasterKeyframeChannel* KisPaintDevice::keyframeChannel() const
 {
     if (m_d->contentChannel) {
         return m_d->contentChannel.data();
     }
     return 0;
 }
 
 const KoColorSpace* KisPaintDevice::colorSpace() const
 {
     Q_ASSERT(m_d->colorSpace() != 0);
     return m_d->colorSpace();
 }
 
 KisPaintDeviceSP KisPaintDevice::createCompositionSourceDevice() const
 {
     KisPaintDeviceSP device = new KisPaintDevice(compositionSourceColorSpace());
     device->setDefaultBounds(defaultBounds());
     return device;
 }
 
 KisPaintDeviceSP KisPaintDevice::createCompositionSourceDevice(KisPaintDeviceSP cloneSource) const
 {
     KisPaintDeviceSP clone = new KisPaintDevice(*cloneSource);
     clone->setDefaultBounds(defaultBounds());
     clone->convertTo(compositionSourceColorSpace(),
                      KoColorConversionTransformation::internalRenderingIntent(),
                      KoColorConversionTransformation::internalConversionFlags());
     return clone;
 }
 
 KisPaintDeviceSP KisPaintDevice::createCompositionSourceDevice(KisPaintDeviceSP cloneSource, const QRect roughRect) const
 {
     KisPaintDeviceSP clone = new KisPaintDevice(colorSpace());
     clone->setDefaultBounds(defaultBounds());
     clone->makeCloneFromRough(cloneSource, roughRect);
     clone->convertTo(compositionSourceColorSpace(),
                      KoColorConversionTransformation::internalRenderingIntent(),
                      KoColorConversionTransformation::internalConversionFlags());
     return clone;
 }
 
 KisFixedPaintDeviceSP KisPaintDevice::createCompositionSourceDeviceFixed() const
 {
     return new KisFixedPaintDevice(compositionSourceColorSpace());
 }
 
 const KoColorSpace* KisPaintDevice::compositionSourceColorSpace() const
 {
     return colorSpace();
 }
 
 QVector<qint32> KisPaintDevice::channelSizes() const
 {
     QVector<qint32> sizes;
     QList<KoChannelInfo*> channels = colorSpace()->channels();
     std::sort(channels.begin(), channels.end());
 
     Q_FOREACH (KoChannelInfo * channelInfo, channels) {
         sizes.append(channelInfo->size());
     }
     return sizes;
 }
 
 KisPaintDevice::MemoryReleaseObject::~MemoryReleaseObject()
 {
     KisDataManager::releaseInternalPools();
 }
 
 KisPaintDevice::MemoryReleaseObject* KisPaintDevice::createMemoryReleaseObject()
 {
     return new MemoryReleaseObject();
 }
 
 KisPaintDevice::LodDataStruct::~LodDataStruct()
 {
 }
 
 KisRegion KisPaintDevice::regionForLodSyncing() const
 {
     return m_d->regionForLodSyncing();
 }
 
 KisPaintDevice::LodDataStruct* KisPaintDevice::createLodDataStruct(int lod)
 {
     return m_d->createLodDataStruct(lod);
 }
 
 void KisPaintDevice::updateLodDataStruct(LodDataStruct *dst, const QRect &srcRect)
 {
     m_d->updateLodDataStruct(dst, srcRect);
 }
 
 void KisPaintDevice::uploadLodDataStruct(LodDataStruct *dst)
 {
     m_d->uploadLodDataStruct(dst);
 }
 
 void KisPaintDevice::generateLodCloneDevice(KisPaintDeviceSP dst, const QRect &originalRect, int lod)
 {
     m_d->generateLodCloneDevice(dst, originalRect, lod);
 }
 
 
 KisPaintDeviceFramesInterface* KisPaintDevice::framesInterface()
 {
     return m_d->framesInterface.data();
 }
 
 bool KisPaintDevice::burnKeyframe(int frameID)
 {
     KIS_ASSERT_RECOVER_RETURN_VALUE(m_d->framesInterface.data()->frames().contains(frameID), false);
 
     // Preserve keyframe data from frameID...
     KisPaintDeviceSP holder = new KisPaintDevice(m_d->colorSpace());
     m_d->framesInterface->writeFrameToDevice(frameID, holder);
 
     // Remove all keyframes..
     QSet<int> times = m_d->contentChannel->allKeyframeTimes();
     Q_FOREACH( const int& time, times ) {
         m_d->contentChannel->removeKeyframe(time);
     }
 
     // TODO: Eventually rewrite this to completely remove contentChannel.
     //          For now, importing it as frame 0 will be close enough.
     m_d->contentChannel->importFrame(0, holder, nullptr);
 
     return true;
 }
 
 bool KisPaintDevice::burnKeyframe()
 {
     if (m_d->framesInterface) {
         return burnKeyframe(m_d->framesInterface->currentFrameId());
     }
     return true;
 }
 
 /******************************************************************/
 /*               KisPaintDeviceFramesInterface                    */
 /******************************************************************/
 
 KisPaintDeviceFramesInterface::KisPaintDeviceFramesInterface(KisPaintDevice *parentDevice)
     : q(parentDevice)
 {
 }
 
 QList<int> KisPaintDeviceFramesInterface::frames()
 {
     return q->m_d->frameIds();
 }
 
 int KisPaintDeviceFramesInterface::createFrame(bool copy, int copySrc, const QPoint &offset, KUndo2Command *parentCommand)
 {
     return q->m_d->createFrame(copy, copySrc, offset, parentCommand);
 }
 
 void KisPaintDeviceFramesInterface::deleteFrame(int frame, KUndo2Command *parentCommand)
 {
     return q->m_d->deleteFrame(frame, parentCommand);
 }
 
 void KisPaintDeviceFramesInterface::writeFrameToDevice(int frameId, KisPaintDeviceSP targetDevice)
 {
     q->m_d->writeFrameToDevice(frameId, targetDevice);
 }
 
 void KisPaintDeviceFramesInterface::uploadFrame(int srcFrameId, int dstFrameId, KisPaintDeviceSP srcDevice)
 {
     q->m_d->uploadFrame(srcFrameId, dstFrameId, srcDevice);
 }
 
 void KisPaintDeviceFramesInterface::uploadFrame(int dstFrameId, KisPaintDeviceSP srcDevice)
 {
     q->m_d->uploadFrame(dstFrameId, srcDevice);
 }
 
 QRect KisPaintDeviceFramesInterface::frameBounds(int frameId)
 {
     return q->m_d->frameBounds(frameId);
 }
 
 QPoint KisPaintDeviceFramesInterface::frameOffset(int frameId) const
 {
     return q->m_d->frameOffset(frameId);
 }
 
 void KisPaintDeviceFramesInterface::setFrameDefaultPixel(const KoColor &defPixel, int frameId)
 {
     KIS_ASSERT_RECOVER_RETURN(frameId >= 0);
     q->m_d->setFrameDefaultPixel(defPixel, frameId);
 }
 
 KoColor KisPaintDeviceFramesInterface::frameDefaultPixel(int frameId) const
 {
     KIS_ASSERT_RECOVER(frameId >= 0) {
         return KoColor(Qt::red, q->m_d->colorSpace());
     }
     return q->m_d->frameDefaultPixel(frameId);
 }
 
 bool KisPaintDeviceFramesInterface::writeFrame(KisPaintDeviceWriter &store, int frameId)
 {
     KIS_ASSERT_RECOVER(frameId >= 0) {
         return false;
     }
     return q->m_d->writeFrame(store, frameId);
 }
 
 bool KisPaintDeviceFramesInterface::readFrame(QIODevice *stream, int frameId)
 {
     KIS_ASSERT_RECOVER(frameId >= 0) {
         return false;
     }
     return q->m_d->readFrame(stream, frameId);
 }
 
 int KisPaintDeviceFramesInterface::currentFrameId() const
 {
     return q->m_d->currentFrameId();
 }
 
 KisDataManagerSP KisPaintDeviceFramesInterface::frameDataManager(int frameId) const
 {
     KIS_ASSERT_RECOVER(frameId >= 0) {
         return q->m_d->dataManager();
     }
     return q->m_d->frameDataManager(frameId);
 }
 
 void KisPaintDeviceFramesInterface::invalidateFrameCache(int frameId)
 {
     KIS_ASSERT_RECOVER_RETURN(frameId >= 0);
 
     return q->m_d->invalidateFrameCache(frameId);
 }
 
 void KisPaintDeviceFramesInterface::setFrameOffset(int frameId, const QPoint &offset)
 {
     KIS_ASSERT_RECOVER_RETURN(frameId >= 0);
     return q->m_d->setFrameOffset(frameId, offset);
 }
 
 KisPaintDeviceFramesInterface::TestingDataObjects
 KisPaintDeviceFramesInterface::testingGetDataObjects() const
 {
     TestingDataObjects objects;
 
     objects.m_data = q->m_d->m_data.data();
     objects.m_lodData = q->m_d->m_lodData.data();
     objects.m_externalFrameData = q->m_d->m_externalFrameData.data();
 
     typedef KisPaintDevice::Private::FramesHash FramesHash;
 
     FramesHash::const_iterator it = q->m_d->m_frames.constBegin();
     FramesHash::const_iterator end = q->m_d->m_frames.constEnd();
 
     for (; it != end; ++it) {
         objects.m_frames.insert(it.key(), it.value().data());
     }
 
     objects.m_currentData = q->m_d->currentData();
 
     return objects;
 }
 
 QList<KisPaintDeviceData*> KisPaintDeviceFramesInterface::testingGetDataObjectsList() const
 {
     return q->m_d->allDataObjects();
 }
 
 void KisPaintDevice::tesingFetchLodDevice(KisPaintDeviceSP targetDevice)
 {
     m_d->tesingFetchLodDevice(targetDevice);
 }