File indexing completed on 2024-05-12 15:58:32

 /*
  *  SPDX-FileCopyrightText: 2005 C. Boemann <cbo@boemann.dk>
  *  SPDX-FileCopyrightText: 2006 Bart Coppens <kde@bartcoppens.be>
  *  SPDX-FileCopyrightText: 2007 Boudewijn Rempt <boud@valdyas.org>
  *  SPDX-FileCopyrightText: 2009 Dmitry Kazakov <dimula73@gmail.com>
  *
  *  SPDX-License-Identifier: GPL-2.0-or-later
  */
 
 #include "kis_paint_layer.h"
 
 #include <kis_debug.h>
 #include <klocalizedstring.h>
 
 #include <KoIcon.h>
 #include <kis_icon.h>
 #include <KoColorSpace.h>
 #include <KoColorProfile.h>
 #include <KoCompositeOpRegistry.h>
 #include <KoProperties.h>
 
 #include "kis_image.h"
 #include "kis_painter.h"
 #include "kis_paint_device.h"
 #include "kis_node_visitor.h"
 #include "kis_processing_visitor.h"
 #include "kis_default_bounds.h"
 
 #include "kis_onion_skin_compositor.h"
 #include "kis_raster_keyframe_channel.h"
 
 #include "kis_signal_auto_connection.h"
 #include "kis_layer_properties_icons.h"
 
 #include "kis_onion_skin_cache.h"
 
 struct Q_DECL_HIDDEN KisPaintLayer::Private
 {
 public:
     Private() : contentChannel(0) {}
 
     KisPaintDeviceSP paintDevice;
     QBitArray        paintChannelFlags;
 
     // the real pointer is owned by the paint device
     KisRasterKeyframeChannel *contentChannel;
 
     KisSignalAutoConnectionsStore onionSkinConnection;
     KisOnionSkinCache onionSkinCache;
 
     bool onionSkinVisibleOverride = true;
 };
 
 KisPaintLayer::KisPaintLayer(KisImageWSP image, const QString& name, quint8 opacity, KisPaintDeviceSP dev)
     : KisLayer(image, name, opacity)
     , m_d(new Private())
 {
     Q_ASSERT(dev);
 
     init(dev);
     m_d->paintDevice->setDefaultBounds(new KisDefaultBounds(image));
 }
 
 
 KisPaintLayer::KisPaintLayer(KisImageWSP image, const QString& name, quint8 opacity)
     : KisLayer(image, name, opacity)
     , m_d(new Private())
 {
     Q_ASSERT(image);
 
     init(new KisPaintDevice(this, image->colorSpace(), new KisDefaultBounds(image)));
 }
 
 KisPaintLayer::KisPaintLayer(KisImageWSP image, const QString& name, quint8 opacity, const KoColorSpace * colorSpace)
     : KisLayer(image, name, opacity)
     , m_d(new Private())
 {
     if (!colorSpace) {
         Q_ASSERT(image);
         colorSpace = image->colorSpace();
     }
     Q_ASSERT(colorSpace);
     init(new KisPaintDevice(this, colorSpace, new KisDefaultBounds(image)));
 }
 
 KisPaintLayer::KisPaintLayer(const KisPaintLayer& rhs)
     : KisLayer(rhs)
     , KisIndirectPaintingSupport()
     , m_d(new Private)
 {
     const bool copyFrames = (rhs.m_d->contentChannel != 0);
     if (!copyFrames) {
         init(new KisPaintDevice(*rhs.m_d->paintDevice.data()), rhs.m_d->paintChannelFlags);
     } else {
         init(new KisPaintDevice(*rhs.m_d->paintDevice.data(), KritaUtils::CopyAllFrames), rhs.m_d->paintChannelFlags);
 
         m_d->contentChannel = m_d->paintDevice->keyframeChannel();
         addKeyframeChannel(m_d->contentChannel);
 
         m_d->contentChannel->setOnionSkinsEnabled(rhs.onionSkinEnabled());
 
         KisLayer::enableAnimation();
     }
 }
 
 void KisPaintLayer::init(KisPaintDeviceSP paintDevice, const QBitArray &paintChannelFlags)
 {
     m_d->paintDevice = paintDevice;
     m_d->paintDevice->setParentNode(this);
 
     m_d->paintChannelFlags = paintChannelFlags;
 }
 
 KisPaintLayer::~KisPaintLayer()
 {
     delete m_d;
 }
 
 bool KisPaintLayer::allowAsChild(KisNodeSP node) const
 {
     return node->inherits("KisMask");
 }
 
 KisPaintDeviceSP KisPaintLayer::original() const
 {
     return m_d->paintDevice;
 }
 
 KisPaintDeviceSP KisPaintLayer::paintDevice() const
 {
     return m_d->paintDevice;
 }
 
 bool KisPaintLayer::needProjection() const
 {
     return hasTemporaryTarget() || (isAnimated() && onionSkinEnabled());
 }
 
 void KisPaintLayer::copyOriginalToProjection(const KisPaintDeviceSP original,
                                              KisPaintDeviceSP projection,
                                              const QRect& rect) const
 {
     KisIndirectPaintingSupport::ReadLocker l(this);
 
     KisPainter::copyAreaOptimized(rect.topLeft(), original, projection, rect);
 
     if (hasTemporaryTarget()) {
         KisPainter gc(projection);
         setupTemporaryPainter(&gc);
         gc.bitBlt(rect.topLeft(), temporaryTarget(), rect);
     }
 
     if (m_d->contentChannel &&
             m_d->contentChannel->keyframeCount() > 1 &&
             onionSkinEnabled() &&
             m_d->onionSkinVisibleOverride &&
             !m_d->paintDevice->defaultBounds()->externalFrameActive()) {
 
         KisPaintDeviceSP skins = m_d->onionSkinCache.projection(m_d->paintDevice);
 
         KisPainter gcDest(projection);
         gcDest.setCompositeOpId(COMPOSITE_BEHIND);
         gcDest.bitBlt(rect.topLeft(), skins, rect);
         gcDest.end();
     }
 
     if (!m_d->contentChannel ||
         (m_d->contentChannel->keyframeCount() <= 1) || !onionSkinEnabled()) {
         m_d->onionSkinCache.reset();
     }
 }
 
 QIcon KisPaintLayer::icon() const
 {
     return KisIconUtils::loadIcon("paintLayer");
 }
 
 void KisPaintLayer::setImage(KisImageWSP image)
 {
     m_d->paintDevice->setDefaultBounds(new KisDefaultBounds(image));
     KisLayer::setImage(image);
 }
 
 KisBaseNode::PropertyList KisPaintLayer::sectionModelProperties() const
 {
     KisBaseNode::PropertyList l = KisLayer::sectionModelProperties();
 
     l << KisLayerPropertiesIcons::getProperty(KisLayerPropertiesIcons::alphaLocked, alphaLocked());
 
     if (isAnimated()) {
         l << KisLayerPropertiesIcons::getProperty(KisLayerPropertiesIcons::onionSkins, onionSkinEnabled());
     }
 
     return l;
 }
 
 void KisPaintLayer::setSectionModelProperties(const KisBaseNode::PropertyList &properties)
 {
     Q_FOREACH (const KisBaseNode::Property &property, properties) {
         if (property.name == i18n("Alpha Locked")) {
             setAlphaLocked(property.state.toBool());
         }
         else if (property.name == i18n("Onion Skins")) {
             setOnionSkinEnabled(property.state.toBool());
         }
     }
 
     KisLayer::setSectionModelProperties(properties);
 }
 
 bool KisPaintLayer::accept(KisNodeVisitor &v)
 {
     return v.visit(this);
 }
 
 void KisPaintLayer::accept(KisProcessingVisitor &visitor, KisUndoAdapter *undoAdapter)
 {
     return visitor.visit(this, undoAdapter);
 }
 
 void KisPaintLayer::setChannelLockFlags(const QBitArray& channelFlags)
 {
     Q_ASSERT(((quint32)channelFlags.count() == colorSpace()->channelCount() || channelFlags.isEmpty()));
     m_d->paintChannelFlags = channelFlags;
 }
 
 const QBitArray& KisPaintLayer::channelLockFlags() const
 {
     return m_d->paintChannelFlags;
 }
 
 QRect KisPaintLayer::extent() const
 {
     KisPaintDeviceSP t = temporaryTarget();
     QRect rect = t ? t->extent() : QRect();
     if (onionSkinEnabled() && m_d->onionSkinVisibleOverride) rect |= KisOnionSkinCompositor::instance()->calculateExtent(m_d->paintDevice);
     return rect | KisLayer::extent();
 }
 
 QRect KisPaintLayer::exactBounds() const
 {
     KisPaintDeviceSP t = temporaryTarget();
     QRect rect = t ? t->extent() : QRect();
     if (onionSkinEnabled() && m_d->onionSkinVisibleOverride) rect |= KisOnionSkinCompositor::instance()->calculateExtent(m_d->paintDevice);
     return rect | KisLayer::exactBounds();
 }
 
 bool KisPaintLayer::alphaLocked() const
 {
     QBitArray flags = colorSpace()->channelFlags(false, true) & m_d->paintChannelFlags;
     return flags.count(true) == 0 && !m_d->paintChannelFlags.isEmpty();
 }
 
 void KisPaintLayer::setAlphaLocked(bool lock)
 {
     if(m_d->paintChannelFlags.isEmpty())
         m_d->paintChannelFlags = colorSpace()->channelFlags(true, true);
 
     if(lock)
         m_d->paintChannelFlags &= colorSpace()->channelFlags(true, false);
     else
         m_d->paintChannelFlags |= colorSpace()->channelFlags(false, true);
 
     baseNodeChangedCallback();
 }
 
 bool KisPaintLayer::onionSkinEnabled() const
 {
     return nodeProperties().boolProperty("onionskin", false);
 }
 
 void KisPaintLayer::setOnionSkinEnabled(bool state)
 {
     const auto oldState = onionSkinEnabled();
     if (oldState == state) return;
 
     if (!state && oldState) {
         // FIXME: change ordering! race condition possible!
 
         // Turning off onionskins shrinks our extent. Let's clean up the onion skins first
         setDirty(KisOnionSkinCompositor::instance()->calculateExtent(m_d->paintDevice));
     }
 
     if (state) {
         m_d->onionSkinConnection.addConnection(KisOnionSkinCompositor::instance(),
                                                SIGNAL(sigOnionSkinChanged()),
                                                this,
                                                SLOT(slotExternalUpdateOnionSkins()));
     } else {
         m_d->onionSkinConnection.clear();
     }
 
     if (m_d->contentChannel) {
         m_d->contentChannel->setOnionSkinsEnabled(state);
     }
 
     setNodeProperty("onionskin", state);
 }
 
 void KisPaintLayer::flushOnionSkinCache() {
     m_d->onionSkinCache.reset();
 }
 
 void KisPaintLayer::slotExternalUpdateOnionSkins()
 {
     if (!onionSkinEnabled()) return;
 
     const QRect dirtyRect =
             KisOnionSkinCompositor::instance()->calculateFullExtent(m_d->paintDevice);
 
     setDirty(dirtyRect);
 }
 
 KisKeyframeChannel *KisPaintLayer::requestKeyframeChannel(const QString &id)
 {
     if (id == KisKeyframeChannel::Raster.id()) {
         m_d->contentChannel = m_d->paintDevice->createKeyframeChannel(KisKeyframeChannel::Raster);
         m_d->contentChannel->setOnionSkinsEnabled(onionSkinEnabled());
         enableAnimation();
         return m_d->contentChannel;
     }
 
     return KisLayer::requestKeyframeChannel(id);
 }
 
 bool KisPaintLayer::supportsKeyframeChannel(const QString &id)
 {
      if (id == KisKeyframeChannel::Raster.id()) {
          return true;
      }
 
      return KisLayer::supportsKeyframeChannel(id);
 }
 
 KisPaintDeviceList KisPaintLayer::getLodCapableDevices() const
 {
     KisPaintDeviceList list = KisLayer::getLodCapableDevices();
 
     KisPaintDeviceSP onionSkinsDevice = m_d->onionSkinCache.lodCapableDevice();
     if (onionSkinsDevice) {
         list << onionSkinsDevice;
     }
 
     return list;
 }
 
 bool KisPaintLayer::decorationsVisible() const
 {
     return m_d->onionSkinVisibleOverride;
 }
 
 void KisPaintLayer::setDecorationsVisible(bool value, bool update)
 {
     if (value == decorationsVisible()) return;
 
     const QRect oldExtent = extent();
 
     m_d->onionSkinVisibleOverride = value;
 
     if (update && onionSkinEnabled()) {
         setDirty(oldExtent | extent());
     }
 }