File indexing completed on 2024-05-12 15:58:37

 /*
  *  SPDX-FileCopyrightText: 2011 Dmitry Kazakov <dimula73@gmail.com>
  *
  *  SPDX-License-Identifier: GPL-2.0-or-later
  */
 
 #include "kis_processing_applicator.h"
 
 #include "kis_image.h"
 #include "kis_paint_layer.h"
 #include "kis_node.h"
 #include "kis_clone_layer.h"
 #include "kis_processing_visitor.h"
 #include "commands_new/kis_processing_command.h"
 #include "kis_stroke_strategy_undo_command_based.h"
 #include "kis_layer_utils.h"
 #include "kis_command_utils.h"
 #include "kis_time_span.h"
 #include "kis_node.h"
 #include "kis_image_signal_router.h"
 #include "KisAsynchronouslyMergeableCommandInterface.h"
 #include "kis_command_ids.h"
 
 class DisableUIUpdatesCommand : public KisCommandUtils::FlipFlopCommand, public KisAsynchronouslyMergeableCommandInterface
 {
 public:
     DisableUIUpdatesCommand(KisImageWSP image,
                             bool finalUpdate)
         : FlipFlopCommand(finalUpdate),
           m_image(image)
     {
     }
 
     void partA() override {
         m_image->disableUIUpdates();
     }
 
     void partB() override {
         m_image->enableUIUpdates();
     }
 
     int id() const override {
         return KisCommandUtils::DisableUIUpdatesCommandId;
     }
 
     bool mergeWith(const KUndo2Command *command) override {
         return canMergeWith(command);
     }
 
     bool canMergeWith(const KUndo2Command *command) const override {
         const DisableUIUpdatesCommand *other =
             dynamic_cast<const DisableUIUpdatesCommand*>(command);
 
         return other && other->m_image == m_image;
     }
 
 private:
     KisImageWSP m_image;
 };
 
 
 class UpdateCommand : public KisCommandUtils::FlipFlopCommand, public KisAsynchronouslyMergeableCommandInterface
 {
 public:
     UpdateCommand(KisImageWSP image, KisNodeSP node,
                   KisProcessingApplicator::ProcessingFlags flags,
                   State initialState, QSharedPointer<bool> sharedAllFramesToken)
         : FlipFlopCommand(initialState),
           m_image(image),
           m_node(node),
           m_flags(flags),
           m_sharedAllFramesToken(sharedAllFramesToken)
     {
     }
 
 private:
     void partA() override {
         /**
          * We disable all non-centralized updates here. Everything
          * should be done by this command's explicit updates.
          *
          * If you still need third-party updates work, please add a
          * flag to the applicator.
          */
         m_image->disableDirtyRequests();
     }
 
     void partB() override {
         m_image->enableDirtyRequests();
 
         if (*m_sharedAllFramesToken) {
             KisLayerUtils::recursiveApplyNodes(m_image->root(), [](KisNodeSP node){
                 KisPaintLayer* paintLayer = qobject_cast<KisPaintLayer*>(node.data());
                 if (paintLayer && paintLayer->onionSkinEnabled()) {
                     paintLayer->flushOnionSkinCache();
                 }
             });
         }
 
         m_image->root()->graphListener()->invalidateFrames(KisTimeSpan::infinite(0), m_node->exactBounds());
 
         if (!m_flags.testFlag(KisProcessingApplicator::NO_IMAGE_UPDATES)) {
             if(m_flags.testFlag(KisProcessingApplicator::RECURSIVE)) {
                 m_image->refreshGraphAsync(m_node);
             }
 
             m_node->setDirty(m_image->bounds());
 
             updateClones(m_node);
         }
     }
 
     void updateClones(KisNodeSP node) {
         // simple tail-recursive iteration
 
         KisNodeSP prevNode = node->lastChild();
         while(prevNode) {
             updateClones(prevNode);
             prevNode = prevNode->prevSibling();
         }
 
         KisLayer *layer = qobject_cast<KisLayer*>(m_node.data());
         if(layer && layer->hasClones()) {
             Q_FOREACH (KisCloneLayerSP clone, layer->registeredClones()) {
                 if(!clone) continue;
 
                 QPoint offset(clone->x(), clone->y());
                 QRegion dirtyRegion(m_image->bounds());
                 dirtyRegion -= m_image->bounds().translated(offset);
 
                 clone->setDirty(KisRegion::fromQRegion(dirtyRegion));
             }
         }
     }
 
     int id() const override {
         return KisCommandUtils::UpdateCommandId;
     }
 
     bool mergeWith(const KUndo2Command *command) override {
         return canMergeWith(command);
     }
 
     bool canMergeWith(const KUndo2Command *command) const override {
         const UpdateCommand *other =
             dynamic_cast<const UpdateCommand*>(command);
 
         return other &&
             other->m_image == m_image &&
             other->m_node == m_node &&
             other->m_flags == m_flags &&
             bool(other->m_sharedAllFramesToken) == bool(m_sharedAllFramesToken) &&
             (!m_sharedAllFramesToken || *m_sharedAllFramesToken == *other->m_sharedAllFramesToken);
     }
 
 private:
     KisImageWSP m_image;
     KisNodeSP m_node;
     KisProcessingApplicator::ProcessingFlags m_flags;
     QSharedPointer<bool> m_sharedAllFramesToken;
 };
 
 class EmitImageSignalsCommand : public KisCommandUtils::FlipFlopCommand, public KisAsynchronouslyMergeableCommandInterface
 {
 public:
     EmitImageSignalsCommand(KisImageWSP image,
                             KisImageSignalVector emitSignals,
                             bool finalUpdate)
         : FlipFlopCommand(finalUpdate),
           m_image(image),
           m_emitSignals(emitSignals)
     {
     }
 
     void partB() override {
         if (getState() == State::FINALIZING) {
             doUpdate(m_emitSignals);
         } else {
             KisImageSignalVector reverseSignals;
 
             KisImageSignalVector::iterator i = m_emitSignals.end();
             while (i != m_emitSignals.begin()) {
                 --i;
                 reverseSignals.append(i->inverted());
             }
 
             doUpdate(reverseSignals);
         }
     }
 
     int id() const override {
         return KisCommandUtils::EmitImageSignalsCommandId;
     }
 
     bool mergeWith(const KUndo2Command *command) override {
         return canMergeWith(command);
     }
 
     bool canMergeWith(const KUndo2Command *command) const override {
         const EmitImageSignalsCommand *other =
             dynamic_cast<const EmitImageSignalsCommand*>(command);
 
         return other &&
             other->m_image == m_image;
 
             // TODO: implement proper comparison for emitted signals
             // other->m_emitSignals == m_emitSignals;
     }
 
 private:
     void doUpdate(KisImageSignalVector emitSignals) {
         Q_FOREACH (KisImageSignalType type, emitSignals) {
             m_image->signalRouter()->emitNotification(type);
         }
     }
 
 private:
     KisImageWSP m_image;
     KisImageSignalVector m_emitSignals;
 };
 
 
 KisProcessingApplicator::KisProcessingApplicator(KisImageWSP image,
                                                  KisNodeSP node,
                                                  ProcessingFlags flags,
                                                  KisImageSignalVector emitSignals,
                                                  const KUndo2MagicString &name,
                                                  KUndo2CommandExtraData *extraData,
                                                  int macroId)
     : m_image(image),
       m_node(node),
       m_flags(flags),
       m_emitSignals(emitSignals),
       m_finalSignalsEmitted(false),
       m_sharedAllFramesToken(new bool(false))
 {
     KisStrokeStrategyUndoCommandBased *strategy =
             new KisStrokeStrategyUndoCommandBased(name, false, m_image.data());
 
     if (m_flags.testFlag(SUPPORTS_WRAPAROUND_MODE)) {
         strategy->setSupportsWrapAroundMode(true);
     }
 
     if (extraData) {
         strategy->setCommandExtraData(extraData);
     }
 
     strategy->setMacroId(macroId);
 
     m_strokeId = m_image->startStroke(strategy);
     if(!m_emitSignals.isEmpty()) {
         applyCommand(new EmitImageSignalsCommand(m_image, m_emitSignals, false), KisStrokeJobData::BARRIER);
     }
 
     if(m_flags.testFlag(NO_UI_UPDATES)) {
         applyCommand(new DisableUIUpdatesCommand(m_image, false), KisStrokeJobData::BARRIER);
     }
 
     if (m_node) {
         applyCommand(new UpdateCommand(m_image, m_node, m_flags,
                                        UpdateCommand::INITIALIZING,
                                        m_sharedAllFramesToken));
     }
 }
 
 KisProcessingApplicator::~KisProcessingApplicator()
 {
 }
 
 const KisStrokeId KisProcessingApplicator::getStroke() const
 {
     return m_strokeId;
 }
 
 void KisProcessingApplicator::applyVisitor(KisProcessingVisitorSP visitor,
                                            KisStrokeJobData::Sequentiality sequentiality,
                                            KisStrokeJobData::Exclusivity exclusivity)
 {
     KUndo2Command *initCommand = visitor->createInitCommand();
     if (initCommand) {
         applyCommand(initCommand,
                      KisStrokeJobData::SEQUENTIAL, KisStrokeJobData::NORMAL);
     }
 
     if(!m_flags.testFlag(RECURSIVE)) {
         applyCommand(new KisProcessingCommand(visitor, m_node),
                      sequentiality, exclusivity);
     }
     else {
         visitRecursively(m_node, visitor, sequentiality, exclusivity);
     }
 }
 
 void KisProcessingApplicator::applyVisitorAllFrames(KisProcessingVisitorSP visitor,
                                                     KisStrokeJobData::Sequentiality sequentiality,
                                                     KisStrokeJobData::Exclusivity exclusivity)
 {
     *m_sharedAllFramesToken = true;
 
     KUndo2Command *initCommand = visitor->createInitCommand();
     if (initCommand) {
         applyCommand(initCommand,
                      KisStrokeJobData::SEQUENTIAL, KisStrokeJobData::NORMAL);
     }
 
     KisLayerUtils::FrameJobs jobs;
 
     // TODO: implement a nonrecursive case when !m_flags.testFlag(RECURSIVE)
     //       (such case is not yet used anywhere)
     KIS_SAFE_ASSERT_RECOVER_NOOP(m_flags.testFlag(RECURSIVE));
 
     KisLayerUtils::updateFrameJobsRecursive(&jobs, m_node);
 
     if (jobs.isEmpty()) {
         applyVisitor(visitor, sequentiality, exclusivity);
         return;
     }
 
     KisLayerUtils::FrameJobs::const_iterator it = jobs.constBegin();
     KisLayerUtils::FrameJobs::const_iterator end = jobs.constEnd();
 
     KisLayerUtils::SwitchFrameCommand::SharedStorageSP switchFrameStorage(
         new KisLayerUtils::SwitchFrameCommand::SharedStorage());
 
     for (; it != end; ++it) {
         const int frame = it.key();
         const QSet<KisNodeSP> &nodes = it.value();
 
         applyCommand(new KisLayerUtils::SwitchFrameCommand(m_image, frame, false, switchFrameStorage), KisStrokeJobData::BARRIER, KisStrokeJobData::EXCLUSIVE);
 
         foreach (KisNodeSP node, nodes) {
             applyCommand(new KisProcessingCommand(visitor, node),
                          sequentiality, exclusivity);
         }
 
         applyCommand(new KisLayerUtils::SwitchFrameCommand(m_image, frame, true, switchFrameStorage), KisStrokeJobData::BARRIER, KisStrokeJobData::EXCLUSIVE);
     }
 }
 
 void KisProcessingApplicator::visitRecursively(KisNodeSP node,
                                                KisProcessingVisitorSP visitor,
                                                KisStrokeJobData::Sequentiality sequentiality,
                                                KisStrokeJobData::Exclusivity exclusivity)
 {
     // simple tail-recursive iteration
 
     KisNodeSP prevNode = node->lastChild();
     while(prevNode) {
         visitRecursively(prevNode, visitor, sequentiality, exclusivity);
         prevNode = prevNode->prevSibling();
     }
 
     applyCommand(new KisProcessingCommand(visitor, node),
                  sequentiality, exclusivity);
 }
 
 void KisProcessingApplicator::applyCommand(KUndo2Command *command,
                                            KisStrokeJobData::Sequentiality sequentiality,
                                            KisStrokeJobData::Exclusivity exclusivity)
 {
     /*
      * One should not add commands after the final signals have been
      * emitted, only end or cancel the stroke
      */
     KIS_ASSERT_RECOVER_RETURN(!m_finalSignalsEmitted);
 
     m_image->addJob(m_strokeId,
                     new KisStrokeStrategyUndoCommandBased::Data(KUndo2CommandSP(command),
                                                                 false,
                                                                 sequentiality,
                                                                 exclusivity));
 }
 
 void KisProcessingApplicator::explicitlyEmitFinalSignals()
 {
     KIS_ASSERT_RECOVER_RETURN(!m_finalSignalsEmitted);
 
     if (m_node) {
         applyCommand(new UpdateCommand(m_image, m_node, m_flags,
                                        UpdateCommand::FINALIZING,
                                        m_sharedAllFramesToken));
     }
 
     if(m_flags.testFlag(NO_UI_UPDATES)) {
         applyCommand(new DisableUIUpdatesCommand(m_image, true), KisStrokeJobData::BARRIER);
     }
 
     if(!m_emitSignals.isEmpty()) {
         applyCommand(new EmitImageSignalsCommand(m_image, m_emitSignals, true), KisStrokeJobData::BARRIER);
     }
 
     // simple consistency check
     m_finalSignalsEmitted = true;
 }
 
 void KisProcessingApplicator::end()
 {
     if (!m_finalSignalsEmitted) {
         explicitlyEmitFinalSignals();
     }
 
     m_image->endStroke(m_strokeId);
 }
 
 void KisProcessingApplicator::cancel()
 {
     m_image->cancelStroke(m_strokeId);
 }
 
 void KisProcessingApplicator::runSingleCommandStroke(KisImageSP image, KUndo2Command *cmd, KisStrokeJobData::Sequentiality sequentiality, KisStrokeJobData::Exclusivity exclusivity)
 {
     KisProcessingApplicator applicator(image, 0,
                                        KisProcessingApplicator::NONE,
                                        KisImageSignalVector(),
                                        cmd->text());
     applicator.applyCommand(cmd, sequentiality, exclusivity);
     applicator.end();
 }