File indexing completed on 2024-05-19 04:26:09

 /*
  *  SPDX-FileCopyrightText: 2007 Boudewijn Rempt <boud@valdyas.org>
  *
  *  SPDX-License-Identifier: GPL-2.0-or-later
  */
 
 #include "kis_clone_layer.h"
 
 #include <kis_debug.h>
 #include <klocalizedstring.h>
 
 #include <KoIcon.h>
 #include <kis_icon.h>
 
 #include <KoColorSpace.h>
 #include <KoCompositeOpRegistry.h>
 
 #include "kis_default_bounds.h"
 #include "kis_paint_device.h"
 #include "kis_image.h"
 #include "kis_painter.h"
 #include "kis_node_visitor.h"
 #include "kis_processing_visitor.h"
 #include "kis_paint_layer.h"
 
 #include <QStack>
 #include <kis_effect_mask.h>
 #include "kis_lod_capable_layer_offset.h"
 
 
 struct Q_DECL_HIDDEN KisCloneLayer::Private
 {
     Private(KisDefaultBoundsBaseSP defaultBounds)
         : offset(defaultBounds)
     {
     }
 
     KisPaintDeviceSP fallback;
     KisLodCapableLayerOffset offset;
 
     KisLayerSP copyFrom;
     KisNodeUuidInfo copyFromInfo;
     CopyLayerType type {COPY_PROJECTION};
 };
 
 KisCloneLayer::KisCloneLayer(KisLayerSP from, KisImageWSP image, const QString &name, quint8 opacity)
         : KisLayer(image, name, opacity)
         , m_d(new Private(new KisDefaultBounds(image)))
 {
     KisImageSP imageSP = image.toStrongRef();
     if (!imageSP) {
         return;
     }
     m_d->fallback = new KisPaintDevice(this,
                                        imageSP->colorSpace(),
                                        new KisDefaultBounds(imageSP));
     m_d->copyFrom = from;
     m_d->type = COPY_PROJECTION;
 
     // When loading the layer we copy from might not exist yet
     if (m_d->copyFrom) {
         m_d->copyFrom->registerClone(this);
     }
 }
 
 KisCloneLayer::KisCloneLayer(const KisCloneLayer& rhs)
         : KisLayer(rhs)
         , m_d(new Private(new KisDefaultBounds(rhs.image())))
 {
     m_d->fallback = new KisPaintDevice(this,
                                        rhs.m_d->fallback->colorSpace(),
                                        new KisDefaultBounds(rhs.image()));
     m_d->copyFrom = rhs.copyFrom();
     m_d->type = rhs.copyType();
     m_d->offset = rhs.m_d->offset;
 
     if (m_d->copyFrom) {
         m_d->copyFrom->registerClone(this);
     }
 }
 
 KisCloneLayer::~KisCloneLayer()
 {
     if (m_d->copyFrom) {
         m_d->copyFrom->unregisterClone(this);
     }
     delete m_d;
 }
 
 KisLayerSP KisCloneLayer::reincarnateAsPaintLayer() const
 {
     KisPaintDeviceSP newOriginal = new KisPaintDevice(*original());
     KisPaintLayerSP newLayer = new KisPaintLayer(image(), name(), opacity(), newOriginal);
     newLayer->setX(newLayer->x() + x());
     newLayer->setY(newLayer->y() + y());
     newLayer->setCompositeOpId(compositeOpId());
     newLayer->mergeNodeProperties(nodeProperties());
 
     return newLayer;
 }
 
 void KisCloneLayer::setImage(KisImageWSP image)
 {
     m_d->fallback->setDefaultBounds(new KisDefaultBounds(image));
     m_d->offset.setDefaultBounds(new KisDefaultBounds(image));
     KisLayer::setImage(image);
 }
 
 bool KisCloneLayer::allowAsChild(KisNodeSP node) const
 {
     return node->inherits("KisMask");
 }
 
 KisPaintDeviceSP KisCloneLayer::paintDevice() const
 {
     return 0;
 }
 
 KisPaintDeviceSP KisCloneLayer::original() const
 {
     if (!m_d->copyFrom || !m_d->copyFrom->projection()) return m_d->fallback;
     KisPaintDeviceSP retval;
     switch (m_d->type) {
     case COPY_PROJECTION:
         retval = m_d->copyFrom->projection();
         break;
 
     case COPY_ORIGINAL:
     default:
         retval = m_d->copyFrom->original();
     }
 
     return retval;
 }
 
 bool KisCloneLayer::needProjection() const
 {
     return m_d->offset->x() || m_d->offset->y();
 }
 
 const KoColorSpace *KisCloneLayer::colorSpace() const
 {
     return m_d->copyFrom ? m_d->copyFrom->colorSpace() : m_d->fallback->colorSpace();
 }
 
 void KisCloneLayer::copyOriginalToProjection(const KisPaintDeviceSP original,
         KisPaintDeviceSP projection,
         const QRect& rect) const
 {
     QRect copyRect = rect;
     copyRect.translate(-m_d->offset->x(), -m_d->offset->y());
 
     KisPainter::copyAreaOptimized(rect.topLeft(), original, projection, copyRect);
 }
 
 void KisCloneLayer::setDirtyOriginal(const QRect &rect)
 {
     /**
      * The original will be updated when the clone becomes visible
      * again.
      */
     if (!visible(true)) return;
 
     /**
      *  HINT: this method is present for historical reasons only.
      *        Long time ago the updates were calculated in
      *        "copyOriginalToProjection" coordinate system. Now
      *        everything is done in "original()" space.
      */
     KisLayer::setDirty(rect);
 }
 
 void KisCloneLayer::notifyParentVisibilityChanged(bool value)
 {
     KisImageSP imageSP = image().toStrongRef();
     if (!imageSP) {
         return;
     }
     KisLayer::setDirty(imageSP->bounds());
     KisLayer::notifyParentVisibilityChanged(value);
 }
 
 QRect KisCloneLayer::needRectOnSourceForMasks(const QRect &rc) const
 {
     QStack<QRect> applyRects_unused;
     bool rectVariesFlag;
 
     QList<KisEffectMaskSP> effectMasks = this->effectMasks();
     if (effectMasks.isEmpty()) return QRect();
 
     QRect needRect = this->masksNeedRect(effectMasks,
                                          rc,
                                          applyRects_unused,
                                          rectVariesFlag);
 
     if (needRect.isEmpty() ||
         (!rectVariesFlag && needRect == rc)) {
 
         return QRect();
     }
 
     return needRect;
 }
 
 qint32 KisCloneLayer::x() const
 {
     return m_d->offset->x();
 }
 qint32 KisCloneLayer::y() const
 {
     return m_d->offset->y();
 }
 void KisCloneLayer::setX(qint32 x)
 {
     m_d->offset->setX(x);
 }
 void KisCloneLayer::setY(qint32 y)
 {
     m_d->offset->setY(y);
 }
 
 QRect KisCloneLayer::extent() const
 {
     QRect rect = original()->extent();
 
     // HINT: no offset now. See a comment in setDirtyOriginal()
     return rect | projection()->extent();
 }
 
 QRect KisCloneLayer::exactBounds() const
 {
     QRect rect = original()->exactBounds();
 
     // HINT: no offset now. See a comment in setDirtyOriginal()
     return rect | projection()->exactBounds();
 }
 
 QRect KisCloneLayer::accessRect(const QRect &rect, PositionToFilthy pos) const
 {
     QRect resultRect = rect;
 
     if(pos & (N_FILTHY_PROJECTION | N_FILTHY)) {
         if (m_d->offset->x() || m_d->offset->y()) {
             resultRect |= rect.translated(-m_d->offset->x(), -m_d->offset->y());
         }
 
         /**
          * KisUpdateOriginalVisitor will try to recalculate some area
          * on the clone's source, so this extra rectangle should also
          * be taken into account
          */
         resultRect |= needRectOnSourceForMasks(rect);
     }
 
     return resultRect;
 }
 
 QRect KisCloneLayer::outgoingChangeRect(const QRect &rect) const
 {
     return rect.translated(m_d->offset->x(), m_d->offset->y());
 }
 
 bool KisCloneLayer::accept(KisNodeVisitor & v)
 {
     return v.visit(this);
 }
 
 void KisCloneLayer::accept(KisProcessingVisitor &visitor, KisUndoAdapter *undoAdapter)
 {
     return visitor.visit(this, undoAdapter);
 }
 
 void KisCloneLayer::setCopyFrom(KisLayerSP fromLayer)
 {
     if (m_d->copyFrom) {
         m_d->copyFrom->unregisterClone(this);
     }
 
     m_d->copyFrom = fromLayer;
 
     if (m_d->copyFrom) {
         m_d->copyFrom->registerClone(this);
     }
 }
 
 KisLayerSP KisCloneLayer::copyFrom() const
 {
     return m_d->copyFrom;
 }
 
 void KisCloneLayer::setCopyType(CopyLayerType type)
 {
     m_d->type = type;
 }
 
 CopyLayerType KisCloneLayer::copyType() const
 {
     return m_d->type;
 }
 
 KisNodeUuidInfo KisCloneLayer::copyFromInfo() const
 {
     return m_d->copyFrom ? KisNodeUuidInfo(m_d->copyFrom) : m_d->copyFromInfo;
 }
 
 void KisCloneLayer::setCopyFromInfo(KisNodeUuidInfo info)
 {
     Q_ASSERT(!m_d->copyFrom);
     m_d->copyFromInfo = info;
 }
 
 QIcon KisCloneLayer::icon() const
 {
     return KisIconUtils::loadIcon("cloneLayer");
 }
 
 KisBaseNode::PropertyList KisCloneLayer::sectionModelProperties() const
 {
     KisBaseNode::PropertyList l = KisLayer::sectionModelProperties();
     if (m_d->copyFrom)
         l << KisBaseNode::Property(KoID("copy_from", i18n("Copy From")), m_d->copyFrom->name());
 
     return l;
 }
 
 void KisCloneLayer::syncLodCache()
 {
     KisLayer::syncLodCache();
     m_d->offset.syncLodCache();
 }