kis_node_manager.cpp

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/*
 *  SPDX-FileCopyrightText: 2007 Boudewijn Rempt <boud@valdyas.org>
 *
 *  SPDX-License-Identifier: GPL-2.0-or-later
 */
 
#include "kis_node_manager.h"
 
#include <QStandardPaths>
#include <QMessageBox>
#include <KisSignalMapper.h>
#include <QApplication>
 
#include <kactioncollection.h>
 
#include <QKeySequence>
 
#include <kis_icon.h>
#include <KoSelection.h>
#include <KoShapeManager.h>
#include <KoShape.h>
#include <KoShapeLayer.h>
#include <KisImportExportManager.h>
#include <KoFileDialog.h>
#include <KoToolManager.h>
#include <KoProperties.h>
 
#include <KoColorSpace.h>
#include <KoColorSpaceRegistry.h>
#include <KoColorModelStandardIds.h>
 
#include <kis_types.h>
#include <kis_node.h>
#include <kis_selection.h>
#include <kis_selection_mask.h>
#include <kis_layer.h>
#include <kis_mask.h>
#include <kis_image.h>
#include <kis_painter.h>
#include <kis_paint_layer.h>
#include <KisMimeDatabase.h>
#include <KisReferenceImagesLayer.h>
 
#include "KisPart.h"
#include "canvas/kis_canvas2.h"
#include "kis_shape_controller.h"
#include "kis_canvas_resource_provider.h"
#include "KisViewManager.h"
#include "KisDocument.h"
#include "kis_mask_manager.h"
#include "kis_group_layer.h"
#include "kis_layer_manager.h"
#include "kis_selection_manager.h"
#include "kis_node_commands_adapter.h"
#include "kis_action.h"
#include "kis_action_manager.h"
#include "kis_processing_applicator.h"
#include "kis_sequential_iterator.h"
#include "kis_transaction.h"
#include "kis_node_selection_adapter.h"
#include "kis_node_insertion_adapter.h"
#include "kis_node_juggler_compressed.h"
#include "KisNodeDisplayModeAdapter.h"
#include "kis_clipboard.h"
#include "kis_node_dummies_graph.h"
#include "kis_mimedata.h"
#include "kis_layer_utils.h"
#include "krita_utils.h"
#include "kis_shape_layer.h"
#include "kis_keyframe_channel.h"
#include "kis_raster_keyframe_channel.h"
#include "kis_paint_device_frames_interface.h"
#include "kis_layer_utils.h"
#include "kis_filter_mask.h"
 
#include "processing/kis_mirror_processing_visitor.h"
#include "KisView.h"
 
#include <kis_signals_blocker.h>
#include <libs/image/kis_layer_properties_icons.h>
#include <libs/image/commands/kis_node_property_list_command.h>
#include <KisSynchronizedConnection.h>
 
struct KisNodeManager::Private {
    Private(KisNodeManager *_q, KisViewManager *v)
        : q(_q)
        , view(v)
        , imageView(0)
        , layerManager(v)
        , maskManager(v)
        , commandsAdapter(v)
        , nodeSelectionAdapter(new KisNodeSelectionAdapter(q))
        , nodeInsertionAdapter(new KisNodeInsertionAdapter(q))
        , nodeDisplayModeAdapter(new KisNodeDisplayModeAdapter())
        , lastRequestedIsolatedModeStatus(false)
    {
    }
 
    KisNodeManager * q {nullptr};
    KisViewManager * view {nullptr};
    QPointer<KisView>imageView;
    KisLayerManager layerManager;
    KisMaskManager maskManager;
    KisNodeCommandsAdapter commandsAdapter;
    QScopedPointer<KisNodeSelectionAdapter> nodeSelectionAdapter;
    QScopedPointer<KisNodeInsertionAdapter> nodeInsertionAdapter;
    QScopedPointer<KisNodeDisplayModeAdapter> nodeDisplayModeAdapter;
 
    KisAction *pinToTimeline {nullptr};
 
    KisNodeList selectedNodes;
    QPointer<KisNodeJugglerCompressed> nodeJuggler;
 
    KisNodeWSP previouslyActiveNode;
 
    bool activateNodeImpl(KisNodeSP node);
 
    KisSignalMapper nodeCreationSignalMapper;
    KisSignalMapper nodeConversionSignalMapper;
 
    bool lastRequestedIsolatedModeStatus {false};
    KisSynchronizedConnection<KisNodeSP, KisNodeList> activateNodeConnection;
 
    void saveDeviceAsImage(KisPaintDeviceSP device,
                           const QString &defaultName,
                           const QRect &bounds,
                           qreal xRes,
                           qreal yRes,
                           quint8 opacity);
 
    void mergeTransparencyMaskAsAlpha(bool writeToLayers);
    KisNodeJugglerCompressed* lazyGetJuggler(const KUndo2MagicString &actionName);
};
 
bool KisNodeManager::Private::activateNodeImpl(KisNodeSP node)
{
    Q_ASSERT(view);
    Q_ASSERT(view->canvasBase());
    Q_ASSERT(view->canvasBase()->globalShapeManager());
    Q_ASSERT(imageView);
    if (node && node == q->activeNode()) {
        return false;
    }
 
    // Set the selection on the shape manager to the active layer
    // and set call KoSelection::setActiveLayer( KoShapeLayer* layer )
    // with the parent of the active layer.
    KoSelection *selection = view->canvasBase()->globalShapeManager()->selection();
    Q_ASSERT(selection);
    selection->deselectAll();
 
    // Disable all enter-group modes that were active
    view->canvasBase()->setCurrentShapeManagerOwnerShape(nullptr);
 
    if (!node) {
        selection->setActiveLayer(0);
        imageView->setCurrentNode(0);
        maskManager.activateMask(0);
        layerManager.activateLayer(0);
        previouslyActiveNode = q->activeNode();
    } else {
        previouslyActiveNode = q->activeNode();
 
        KoShape * shape = view->document()->shapeForNode(node);
 
        KIS_SAFE_ASSERT_RECOVER_RETURN_VALUE(shape, false);
 
        selection->select(shape);
        KoShapeLayer * shapeLayer = dynamic_cast<KoShapeLayer*>(shape);
 
        KIS_SAFE_ASSERT_RECOVER_RETURN_VALUE(shapeLayer, false);
 
        //         shapeLayer->setGeometryProtected(node->userLocked());
        //         shapeLayer->setVisible(node->visible());
        selection->setActiveLayer(shapeLayer);
 
        imageView->setCurrentNode(node);
        if (KisLayerSP layer = qobject_cast<KisLayer*>(node.data())) {
            maskManager.activateMask(0);
            layerManager.activateLayer(layer);
        } else if (KisMaskSP mask = dynamic_cast<KisMask*>(node.data())) {
            maskManager.activateMask(mask);
            // XXX_NODE: for now, masks cannot be nested.
            layerManager.activateLayer(static_cast<KisLayer*>(node->parent().data()));
        }
    }
    return true;
}
 
//=====================================================================================
 
KisNodeManager::KisNodeManager(KisViewManager *view)
    : m_d(new Private(this, view))
{
    m_d->activateNodeConnection.connectOutputSlot(this, &KisNodeManager::slotImageRequestNodeReselection);
}
 
KisNodeManager::~KisNodeManager()
{
    delete m_d;
}
 
void KisNodeManager::setView(QPointer<KisView>imageView)
{
    m_d->maskManager.setView(imageView);
    m_d->layerManager.setView(imageView);
 
    if (m_d->imageView) {
        KisShapeController *shapeController = dynamic_cast<KisShapeController*>(m_d->imageView->document()->shapeController());
        Q_ASSERT(shapeController);
        shapeController->disconnect(SIGNAL(sigActivateNode(KisNodeSP)), this);
        m_d->imageView->image()->disconnect(this);
        m_d->imageView->image()->disconnect(&m_d->activateNodeConnection);
    }
 
    m_d->imageView = imageView;
 
    if (m_d->imageView) {
        KisShapeController *shapeController = dynamic_cast<KisShapeController*>(m_d->imageView->document()->shapeController());
        Q_ASSERT(shapeController);
        connect(shapeController, SIGNAL(sigActivateNode(KisNodeSP)), SLOT(slotNonUiActivatedNode(KisNodeSP)));
 
        if (!m_d->imageView->currentNode()) {
            if (shapeController->lastActivatedNode() && !m_d->imageView->currentNode()) {
                slotNonUiActivatedNode(shapeController->lastActivatedNode());
            } else {
                // if last activated node is null, most probably, it means that the shape controller
                // is going to Q_EMIT the activation signal very soon
            }
        } else {
            if (!m_d->imageView->currentNode()->graphListener()) {
                slotNonUiActivatedNode(m_d->imageView->image()->root()->lastChild());
            }
        }
 
        m_d->activateNodeConnection.connectInputSignal(m_d->imageView->image(), &KisImage::sigRequestNodeReselection);
        m_d->imageView->resourceProvider()->slotNodeActivated(m_d->imageView->currentNode());
        connect(m_d->imageView->image(), SIGNAL(sigIsolatedModeChanged()), this, SLOT(handleExternalIsolationChange()));
    }
 
}
 
#define NEW_LAYER_ACTION(id, layerType)                                 \
{                                                                   \
    action = actionManager->createAction(id);                       \
    m_d->nodeCreationSignalMapper.setMapping(action, layerType);    \
    connect(action, SIGNAL(triggered()),                            \
    &m_d->nodeCreationSignalMapper, SLOT(map()));           \
    }
 
#define CONVERT_NODE_ACTION_2(id, layerType, exclude)                   \
{                                                                   \
    action = actionManager->createAction(id);                       \
    action->setExcludedNodeTypes(QStringList(exclude));             \
    actionManager->addAction(id, action);                           \
    m_d->nodeConversionSignalMapper.setMapping(action, layerType);  \
    connect(action, SIGNAL(triggered()),                            \
    &m_d->nodeConversionSignalMapper, SLOT(map()));         \
    }
 
#define CONVERT_NODE_ACTION(id, layerType)              \
    CONVERT_NODE_ACTION_2(id, layerType, layerType)
 
void KisNodeManager::setup(KisKActionCollection * actionCollection, KisActionManager* actionManager)
{
    m_d->layerManager.setup(actionManager);
    m_d->maskManager.setup(actionCollection, actionManager);
 
    KisAction * action = 0;
 
    action = actionManager->createAction("mirrorNodeX");
    connect(action, SIGNAL(triggered()), this, SLOT(mirrorNodeX()));
 
    action  = actionManager->createAction("mirrorNodeY");
    connect(action, SIGNAL(triggered()), this, SLOT(mirrorNodeY()));
 
    action = actionManager->createAction("mirrorAllNodesX");
    connect(action, SIGNAL(triggered()), this, SLOT(mirrorAllNodesX()));
 
    action  = actionManager->createAction("mirrorAllNodesY");
    connect(action, SIGNAL(triggered()), this, SLOT(mirrorAllNodesY()));
 
    action = actionManager->createAction("activateNextLayer");
    connect(action, SIGNAL(triggered()), this, SLOT(activateNextNode()));
 
    action = actionManager->createAction("activateNextSiblingLayer");
    connect(action, SIGNAL(triggered()), this, SLOT(activateNextSiblingNode()));
 
    action = actionManager->createAction("activatePreviousLayer");
    connect(action, SIGNAL(triggered()), this, SLOT(activatePreviousNode()));
 
    action = actionManager->createAction("activatePreviousSiblingLayer");
    connect(action, SIGNAL(triggered()), this, SLOT(activatePreviousSiblingNode()));
 
    action = actionManager->createAction("switchToPreviouslyActiveNode");
    connect(action, SIGNAL(triggered()), this, SLOT(switchToPreviouslyActiveNode()));
 
    action  = actionManager->createAction("save_node_as_image");
    connect(action, SIGNAL(triggered()), this, SLOT(saveNodeAsImage()));
 
    action  = actionManager->createAction("save_vector_node_to_svg");
    connect(action, SIGNAL(triggered()), this, SLOT(saveVectorLayerAsImage()));
    action->setActivationFlags(KisAction::ACTIVE_SHAPE_LAYER);
 
    action = actionManager->createAction("duplicatelayer");
    connect(action, SIGNAL(triggered()), this, SLOT(duplicateActiveNode()));
 
    action = actionManager->createAction("copy_layer_clipboard");
    connect(action, SIGNAL(triggered()), this, SLOT(copyLayersToClipboard()));
 
    action = actionManager->createAction("cut_layer_clipboard");
    connect(action, SIGNAL(triggered()), this, SLOT(cutLayersToClipboard()));
 
    action = actionManager->createAction("paste_layer_from_clipboard");
    connect(action, SIGNAL(triggered()), this, SLOT(pasteLayersFromClipboard()));
 
    action = actionManager->createAction("create_quick_group");
    connect(action, SIGNAL(triggered()), this, SLOT(createQuickGroup()));
 
    action = actionManager->createAction("create_quick_clipping_group");
    connect(action, SIGNAL(triggered()), this, SLOT(createQuickClippingGroup()));
 
    action = actionManager->createAction("quick_ungroup");
    connect(action, SIGNAL(triggered()), this, SLOT(quickUngroup()));
 
    action = actionManager->createAction("select_all_layers");
    connect(action, SIGNAL(triggered()), this, SLOT(selectAllNodes()));
 
    action = actionManager->createAction("select_visible_layers");
    connect(action, SIGNAL(triggered()), this, SLOT(selectVisibleNodes()));
 
    action = actionManager->createAction("select_locked_layers");
    connect(action, SIGNAL(triggered()), this, SLOT(selectLockedNodes()));
 
    action = actionManager->createAction("select_invisible_layers");
    connect(action, SIGNAL(triggered()), this, SLOT(selectInvisibleNodes()));
 
    action = actionManager->createAction("select_unlocked_layers");
    connect(action, SIGNAL(triggered()), this, SLOT(selectUnlockedNodes()));
 
    action = actionManager->createAction("new_from_visible");
    connect(action, SIGNAL(triggered()), this, SLOT(createFromVisible()));
    
    action = actionManager->createAction("create_reference_image_from_active_layer");
    connect(action, SIGNAL(triggered()), this, SLOT(createReferenceImageFromLayer()));
    
    action = actionManager->createAction("create_reference_image_from_visible_canvas");
    connect(action, SIGNAL(triggered()), this, SLOT(createReferenceImageFromVisible()));
 
    action = actionManager->createAction("pin_to_timeline");
    action->setCheckable(true);
    connect(action, SIGNAL(toggled(bool)), this, SLOT(slotPinToTimeline(bool)));
    m_d->pinToTimeline = action;
 
    NEW_LAYER_ACTION("add_new_paint_layer", "KisPaintLayer");
 
    NEW_LAYER_ACTION("add_new_group_layer", "KisGroupLayer");
 
    NEW_LAYER_ACTION("add_new_clone_layer", "KisCloneLayer");
 
    NEW_LAYER_ACTION("add_new_shape_layer", "KisShapeLayer");
 
    NEW_LAYER_ACTION("add_new_adjustment_layer", "KisAdjustmentLayer");
 
    NEW_LAYER_ACTION("add_new_fill_layer", "KisGeneratorLayer");
 
    NEW_LAYER_ACTION("add_new_file_layer", "KisFileLayer");
 
    NEW_LAYER_ACTION("add_new_transparency_mask", "KisTransparencyMask");
 
    NEW_LAYER_ACTION("add_new_filter_mask", "KisFilterMask");
 
    // NOTE: FastColorOverlayFilterMask is just an identifier, not an actual class name
    NEW_LAYER_ACTION("add_new_fast_color_overlay_mask", "FastColorOverlayFilterMask");
 
    NEW_LAYER_ACTION("add_new_colorize_mask", "KisColorizeMask");
 
    NEW_LAYER_ACTION("add_new_transform_mask", "KisTransformMask");
 
    NEW_LAYER_ACTION("add_new_selection_mask", "KisSelectionMask");
 
    connect(&m_d->nodeCreationSignalMapper, SIGNAL(mapped(QString)),
            this, SLOT(createNode(QString)));
 
    CONVERT_NODE_ACTION("convert_to_paint_layer", "KisPaintLayer");
 
    CONVERT_NODE_ACTION_2("convert_to_selection_mask", "KisSelectionMask", QStringList() << "KisSelectionMask" << "KisColorizeMask");
 
    CONVERT_NODE_ACTION_2("convert_to_filter_mask", "KisFilterMask", QStringList() << "KisFilterMask" << "KisColorizeMask");
 
    CONVERT_NODE_ACTION_2("convert_to_transparency_mask", "KisTransparencyMask", QStringList() << "KisTransparencyMask" << "KisColorizeMask");
 
    CONVERT_NODE_ACTION("convert_to_animated", "animated");
 
    CONVERT_NODE_ACTION_2("convert_to_file_layer", "KisFileLayer", QStringList() << "KisFileLayer" << "KisCloneLayer");
 
    connect(&m_d->nodeConversionSignalMapper, SIGNAL(mapped(QString)),
            this, SLOT(convertNode(QString)));
 
    // Isolation Modes...
    // Post Qt5.14 this can be replaced with QActionGroup + ExclusionPolicy::ExclusiveOptional.
    action = actionManager->createAction("isolate_active_layer");
    connect(action, SIGNAL(toggled(bool)), this, SLOT(setIsolateActiveLayerMode(bool)));
    action = actionManager->createAction("isolate_active_group");
    connect(action, SIGNAL(triggered(bool)), this, SLOT(setIsolateActiveGroupMode(bool)));
    connect(this, SIGNAL(sigNodeActivated(KisNodeSP)), SLOT(changeIsolationRoot(KisNodeSP)));
 
    action = actionManager->createAction("toggle_layer_visibility");
    connect(action, SIGNAL(triggered()), this, SLOT(toggleVisibility()));
 
    action = actionManager->createAction("toggle_layer_lock");
    connect(action, SIGNAL(triggered()), this, SLOT(toggleLock()));
 
    action = actionManager->createAction("toggle_layer_inherit_alpha");
    connect(action, SIGNAL(triggered()), this, SLOT(toggleInheritAlpha()));
 
    action = actionManager->createAction("toggle_layer_alpha_lock");
    connect(action, SIGNAL(triggered()), this, SLOT(toggleAlphaLock()));
 
    action  = actionManager->createAction("split_alpha_into_mask");
    connect(action, SIGNAL(triggered()), this, SLOT(slotSplitAlphaIntoMask()));
 
    action  = actionManager->createAction("split_alpha_write");
    connect(action, SIGNAL(triggered()), this, SLOT(slotSplitAlphaWrite()));
 
    // HINT: we can save even when the nodes are not editable
    action  = actionManager->createAction("split_alpha_save_merged");
    connect(action, SIGNAL(triggered()), this, SLOT(slotSplitAlphaSaveMerged()));
}
 
void KisNodeManager::updateGUI()
{
    // enable/disable all relevant actions
    m_d->layerManager.updateGUI();
    m_d->maskManager.updateGUI();
}
 
KisNodeSP KisNodeManager::activeNode()
{
    if (m_d->imageView) {
        return m_d->imageView->currentNode();
    }
    return 0;
}
 
KisLayerSP KisNodeManager::activeLayer()
{
    return m_d->layerManager.activeLayer();
}
 
const KoColorSpace* KisNodeManager::activeColorSpace()
{
    if (m_d->maskManager.activeDevice()) {
        return m_d->maskManager.activeDevice()->colorSpace();
    } else {
        Q_ASSERT(m_d->layerManager.activeLayer());
        if (m_d->layerManager.activeLayer()->parentLayer())
            return m_d->layerManager.activeLayer()->parentLayer()->colorSpace();
        else
            return m_d->view->image()->colorSpace();
    }
}
 
bool KisNodeManager::canModifyLayers(KisNodeList nodes, bool showWarning)
{
    KisNodeSP lockedNode;
    Q_FOREACH (KisNodeSP node, nodes) {
        if (!node->isEditable(false)) {
            lockedNode = node;
            break;
        }
    }
 
    if (lockedNode && showWarning) {
        QString errorMessage;
 
        if (nodes.size() <= 1) {
            errorMessage = i18n("Layer is locked");
        } else {
            errorMessage = i18n("Layer \"%1\" is locked", lockedNode->name());
        }
 
        m_d->view->showFloatingMessage(errorMessage, QIcon());
    }
 
    return !lockedNode;
}
 
bool KisNodeManager::canModifyLayer(KisNodeSP node, bool showWarning)
{
    return canModifyLayers({node}, showWarning);
}
 
bool KisNodeManager::canMoveLayers(KisNodeList nodes, bool showWarning)
{
    KisNodeSP lockedNode;
    Q_FOREACH (KisNodeSP node, nodes) {
        if (node->parent() && !node->parent()->isEditable(false)) {
            lockedNode = node->parent();
            break;
        }
    }
 
    if (lockedNode && showWarning) {
        QString errorMessage = i18n("Layer \"%1\" is locked", lockedNode->name());
        m_d->view->showFloatingMessage(errorMessage, QIcon());
    }
 
    return !lockedNode;
}
 
bool KisNodeManager::canMoveLayer(KisNodeSP node, bool showWarning)
{
    return canMoveLayers({node}, showWarning);
}
 
void KisNodeManager::moveNodeAt(KisNodeSP node, KisNodeSP parent, int index)
{
    if (parent->allowAsChild(node)) {
        if (node->inherits("KisSelectionMask") && parent->inherits("KisLayer")) {
            KisSelectionMask *m = dynamic_cast<KisSelectionMask*>(node.data());
            KisLayer *l = qobject_cast<KisLayer*>(parent.data());
            if (m && m->active() && l && l->selectionMask()) {
                l->selectionMask()->setActive(false);
            }
        }
        m_d->commandsAdapter.moveNode(node, parent, index);
    }
}
 
void KisNodeManager::moveNodesDirect(KisNodeList nodes, KisNodeSP parent, KisNodeSP aboveThis)
{
    KUndo2MagicString actionName = kundo2_i18n("Move Nodes");
    KisNodeJugglerCompressed *juggler = m_d->lazyGetJuggler(actionName);
    juggler->moveNode(nodes, parent, aboveThis);
}
 
void KisNodeManager::copyNodesDirect(KisNodeList nodes, KisNodeSP parent, KisNodeSP aboveThis)
{
    KUndo2MagicString actionName = kundo2_i18n("Copy Nodes");
    KisNodeJugglerCompressed *juggler = m_d->lazyGetJuggler(actionName);
    juggler->copyNode(nodes, parent, aboveThis);
}
 
void KisNodeManager::addNodesDirect(KisNodeList nodes, KisNodeSP parent, KisNodeSP aboveThis)
{
    KUndo2MagicString actionName = kundo2_i18n("Add Nodes");
    KisNodeJugglerCompressed *juggler = m_d->lazyGetJuggler(actionName);
    juggler->addNode(nodes, parent, aboveThis);
}
 
void KisNodeManager::toggleIsolateActiveNode()
{
    QAction* action = m_d->view->actionManager()->actionByName("isolate_active_layer");
    action->toggle();
}
 
void KisNodeManager::setIsolateActiveLayerMode(bool checked)
{
    KisImageWSP image = m_d->view->image();
    KIS_ASSERT_RECOVER_RETURN(image);
 
    const bool groupIsolationState = image->isIsolatingGroup();
    changeIsolationMode(checked, groupIsolationState);
}
 
void KisNodeManager::setIsolateActiveGroupMode(bool checked)
{
    KisImageWSP image = m_d->view->image();
    KIS_ASSERT_RECOVER_RETURN(image);
 
    const bool layerIsolationState = image->isIsolatingLayer();
    changeIsolationMode(layerIsolationState, checked);
}
 
void KisNodeManager::changeIsolationMode(bool isolateActiveLayer, bool isolateActiveGroup)
{
    KisImageWSP image = m_d->view->image();
    KisNodeSP activeNode = this->activeNode();
    KIS_ASSERT_RECOVER_RETURN(image && activeNode);
 
    if (isolateActiveLayer || isolateActiveGroup) {
        if (image->startIsolatedMode(activeNode, isolateActiveLayer, isolateActiveGroup) == false) {
            reinitializeIsolationActionGroup();
        }
    } else {
        image->stopIsolatedMode();
    }
}
 
void KisNodeManager::changeIsolationRoot(KisNodeSP isolationRoot)
{
    KisImageWSP image = m_d->view->image();
    if (!image || !isolationRoot) return;
 
    const bool isIsolatingLayer = image->isIsolatingLayer();
    const bool isIsolatingGroup = image->isIsolatingGroup();
 
    // Restart isolation with a new root node and the same settings.
    if (image->startIsolatedMode(isolationRoot, isIsolatingLayer, isIsolatingGroup) == false) {
        reinitializeIsolationActionGroup();
    }
}
 
void KisNodeManager::handleExternalIsolationChange()
{
    // It might be that we have multiple Krita windows open. In such a case
    // only the currently active one should restart isolated mode
    if (!m_d->view->mainWindowAsQWidget()->isActiveWindow()) return;
 
    KisImageWSP image = m_d->view->image();
    KisNodeSP activeNode = this->activeNode();
 
    const bool isIsolatingLayer = image->isIsolatingLayer();
    const bool isIsolatingGroup = image->isIsolatingGroup();
 
    m_d->view->actionManager()->actionByName("isolate_active_layer")->setChecked(isIsolatingLayer);
    m_d->view->actionManager()->actionByName("isolate_active_group")->setChecked(isIsolatingGroup);
}
 
void KisNodeManager::reinitializeIsolationActionGroup()
{
    m_d->view->actionManager()->actionByName("isolate_active_layer")->setChecked(false);
    m_d->view->actionManager()->actionByName("isolate_active_group")->setChecked(false);
}
 
KisNodeSP  KisNodeManager::createNode(const QString & nodeType, bool quiet, KisPaintDeviceSP copyFrom)
{
    if (!m_d->view->blockUntilOperationsFinished(m_d->view->image())) {
        return 0;
    }
 
    KisNodeSP activeNode = this->activeNode();
    if (!activeNode) {
        activeNode = m_d->view->image()->root();
    }
 
    KIS_ASSERT_RECOVER_RETURN_VALUE(activeNode, 0);
 
 
    // XXX: make factories for this kind of stuff,
    //      with a registry
 
    if (nodeType == "KisPaintLayer") {
        return m_d->layerManager.addPaintLayer(activeNode);
    } else if (nodeType == "KisGroupLayer") {
        return m_d->layerManager.addGroupLayer(activeNode);
    } else if (nodeType == "KisAdjustmentLayer") {
        return m_d->layerManager.addAdjustmentLayer(activeNode);
    } else if (nodeType == "KisGeneratorLayer") {
        return m_d->layerManager.addGeneratorLayer(activeNode);
    } else if (nodeType == "KisShapeLayer") {
        return m_d->layerManager.addShapeLayer(activeNode);
    } else if (nodeType == "KisCloneLayer") {
        KisNodeList nodes = selectedNodes();
        if (nodes.isEmpty()) {
            nodes.append(activeNode);
        }
        return m_d->layerManager.addCloneLayer(nodes);
    } else if (nodeType == "KisTransparencyMask") {
        return m_d->maskManager.createTransparencyMask(activeNode, copyFrom, false);
    } else if (nodeType == "KisFilterMask") {
        return m_d->maskManager.createFilterMask(activeNode, copyFrom, quiet, false);
    } else if (nodeType == "FastColorOverlayFilterMask") {
        return m_d->maskManager.createFastColorOverlayMask(activeNode);
    } else if (nodeType == "KisColorizeMask") {
        return m_d->maskManager.createColorizeMask(activeNode);
    } else if (nodeType == "KisTransformMask") {
        return m_d->maskManager.createTransformMask(activeNode);
    } else if (nodeType == "KisSelectionMask") {
        return m_d->maskManager.createSelectionMask(activeNode, copyFrom, false);
    } else if (nodeType == "KisFileLayer") {
        return m_d->layerManager.addFileLayer(activeNode);
    }
    return 0;
}
 
void KisNodeManager::createFromVisible()
{
    KisLayerUtils::newLayerFromVisible(m_d->view->image(), m_d->view->image()->root()->lastChild());
}
 
void KisNodeManager::slotPinToTimeline(bool value)
{
    Q_FOREACH (KisNodeSP node, selectedNodes()) {
        node->setPinnedToTimeline(value);
    }
}
 
KisLayerSP KisNodeManager::createPaintLayer()
{
    KisNodeSP node = createNode("KisPaintLayer");
    return dynamic_cast<KisLayer*>(node.data());
}
 
void KisNodeManager::convertNode(const QString &nodeType)
{
    if (!m_d->view->blockUntilOperationsFinished(m_d->view->image())) {
        return;
    }
 
    KisNodeSP activeNode = this->activeNode();
    if (!activeNode) return;
 
    if (!canModifyLayer(activeNode)) return;
 
    if (nodeType == "KisPaintLayer") {
        m_d->layerManager.convertNodeToPaintLayer(activeNode);
    } else if (nodeType == "KisSelectionMask" ||
               nodeType == "KisFilterMask" ||
               nodeType == "KisTransparencyMask") {
 
        KisPaintDeviceSP copyFrom = activeNode->paintDevice() ?
                    activeNode->paintDevice() : activeNode->projection();
 
        m_d->commandsAdapter.beginMacro(kundo2_i18n("Convert to a Selection Mask"));
 
        bool result = false;
 
        if (nodeType == "KisSelectionMask") {
            result = !m_d->maskManager.createSelectionMask(activeNode, copyFrom, true).isNull();
        } else if (nodeType == "KisFilterMask") {
            result = !m_d->maskManager.createFilterMask(activeNode, copyFrom, false, true).isNull();
        } else if (nodeType == "KisTransparencyMask") {
            result = !m_d->maskManager.createTransparencyMask(activeNode, copyFrom, true).isNull();
        }
 
        m_d->commandsAdapter.endMacro();
 
        if (!result) {
            m_d->view->blockUntilOperationsFinishedForced(m_d->imageView->image());
            m_d->commandsAdapter.undoLastCommand();
        }
    } else if (nodeType == "KisFileLayer") {
        m_d->layerManager.convertLayerToFileLayer(activeNode);
    } else {
        warnKrita << "Unsupported node conversion type:" << nodeType;
    }
}
 
void KisNodeManager::createReferenceImage(bool fromLayer) {
    KisViewManager* m_view = m_d->view;
    KisDocument *document = m_view->document();
    KisCanvas2 *canvas = m_view->canvasBase();
    
    const KisPaintDeviceSP paintDevice = fromLayer ? m_view->activeLayer()->projection()
                                                  : canvas->currentImage()->projection();
    const QImage image = paintDevice->convertToQImage(0, KoColorConversionTransformation::internalRenderingIntent(),
        KoColorConversionTransformation::internalConversionFlags());
    QScopedPointer<KisReferenceImage> reference(KisReferenceImage::fromQImage(*canvas->coordinatesConverter(), image));
    KIS_SAFE_ASSERT_RECOVER_RETURN(canvas);
    if (reference) {
        if (document->referenceImagesLayer()) {
            reference->setZIndex(document->referenceImagesLayer()->shapes().size());
        }
        canvas->addCommand(KisReferenceImagesLayer::addReferenceImages(document, {reference.take()}));
 
        KoToolManager::instance()->switchToolRequested("ToolReferenceImages");
 
    } else {
        if (canvas->canvasWidget()) {
            QString strMessage = fromLayer ? i18nc("error dialog from the reference tool", "Could not create a reference image from the active layer.")
                : i18nc("error dialog from the reference tool", "Could not create a reference image from the visible canvas.");
 
            m_d->view->showFloatingMessage(strMessage, QIcon(), 5000, KisFloatingMessage::High, Qt::TextSingleLine);
        }
    }
}
 
void KisNodeManager::createReferenceImageFromLayer() {
    createReferenceImage(true);
}
 
void KisNodeManager::createReferenceImageFromVisible() {
    createReferenceImage(false);
}
 
void KisNodeManager::slotSomethingActivatedNodeImpl(KisNodeSP node)
{
    KisDummiesFacadeBase *dummiesFacade = dynamic_cast<KisDummiesFacadeBase*>(m_d->imageView->document()->shapeController());
    KIS_SAFE_ASSERT_RECOVER_RETURN(dummiesFacade);
 
    const bool nodeVisible = !isNodeHidden(node, !m_d->nodeDisplayModeAdapter->showGlobalSelectionMask());
    if (!nodeVisible) {
        return;
    }
 
    KIS_ASSERT_RECOVER_RETURN(node != activeNode());
    if (m_d->activateNodeImpl(node)) {
        Q_EMIT sigUiNeedChangeActiveNode(node);
        Q_EMIT sigNodeActivated(node);
        nodesUpdated();
        if (node) {
            bool toggled =  m_d->view->actionCollection()->action("view_show_canvas_only")->isChecked();
            if (toggled) {
                m_d->view->showFloatingMessage( activeLayer()->name(), QIcon(), 1600, KisFloatingMessage::Medium, Qt::TextSingleLine);
            }
        }
    }
}
 
void KisNodeManager::slotNonUiActivatedNode(KisNodeSP node)
{
    // the node must still be in the graph, some asynchronous
    // signals may easily break this requirement
    if (node && !node->graphListener()) {
        node = 0;
    }
 
    if (node == activeNode()) return;
 
    slotSomethingActivatedNodeImpl(node);
 
    if (node) {
        bool toggled =  m_d->view->actionCollection()->action("view_show_canvas_only")->isChecked();
        if (toggled) {
            m_d->view->showFloatingMessage( activeLayer()->name(), QIcon(), 1600, KisFloatingMessage::Medium, Qt::TextSingleLine);
        }
    }
}
 
void KisNodeManager::slotUiActivatedNode(KisNodeSP node)
{
    // the node must still be in the graph, some asynchronous
    // signals may easily break this requirement
    if (node && !node->graphListener()) {
        node = 0;
    }
 
    if (node) {
        QStringList vectorTools = QStringList()
                << "InteractionTool"
                << "KarbonGradientTool"
                << "KarbonCalligraphyTool"
                << "PathTool";
 
        QStringList pixelTools = QStringList()
                << "KritaShape/KisToolBrush"
                << "KritaShape/KisToolDyna"
                << "KritaShape/KisToolMultiBrush"
                << "KritaFill/KisToolFill"
                << "KritaFill/KisToolGradient";
 
        KisSelectionMask *selectionMask = dynamic_cast<KisSelectionMask*>(node.data());
        const bool nodeHasVectorAbilities = node->inherits("KisShapeLayer") ||
                (selectionMask && selectionMask->selection()->hasShapeSelection());
 
        if (nodeHasVectorAbilities) {
            if (pixelTools.contains(KoToolManager::instance()->activeToolId())) {
                KoToolManager::instance()->switchToolRequested("InteractionTool");
            }
        }
        else {
            if (vectorTools.contains(KoToolManager::instance()->activeToolId())) {
                KoToolManager::instance()->switchToolRequested("KritaShape/KisToolBrush");
            }
        }
    }
 
    if (node == activeNode()) return;
 
    slotSomethingActivatedNodeImpl(node);
}
 
void KisNodeManager::nodesUpdated()
{
    KisNodeSP node = activeNode();
    if (!node) return;
 
    m_d->layerManager.layersUpdated();
    m_d->maskManager.masksUpdated();
 
    m_d->view->updateGUI();
    m_d->view->selectionManager()->selectionChanged();
 
    {
        KisSignalsBlocker b(m_d->pinToTimeline);
        m_d->pinToTimeline->setChecked(node->isPinnedToTimeline());
    }
}
 
KisPaintDeviceSP KisNodeManager::activePaintDevice()
{
    return m_d->maskManager.activeMask() ?
                m_d->maskManager.activeDevice() :
                m_d->layerManager.activeDevice();
}
 
void KisNodeManager::nodeProperties(KisNodeSP node)
{
    if ((selectedNodes().size() > 1 && node->inherits("KisLayer")) || node->inherits("KisLayer")) {
        m_d->layerManager.layerProperties();
    }
    else if (node->inherits("KisMask")) {
        m_d->maskManager.maskProperties();
    }
}
 
void KisNodeManager::nodePropertiesIgnoreSelection(KisNodeSP node)
{
    Q_ASSERT(node);
 
    // Change the current node temporarily
    KisNodeSP originalNode = m_d->imageView->currentNode();
    m_d->imageView->setCurrentNode(node);
 
    if (node->inherits("KisLayer")) {
        m_d->layerManager.layerProperties();
    }
    else if (node->inherits("KisMask")) {
        m_d->maskManager.maskProperties();
    }
 
    m_d->imageView->setCurrentNode(originalNode);
}
 
void KisNodeManager::changeCloneSource()
{
    m_d->layerManager.changeCloneSource();
}
 
qint32 KisNodeManager::convertOpacityToInt(qreal opacity)
{
    return qMin(255, int(opacity * 2.55 + 0.5));
}
 
void KisNodeManager::setNodeName(KisNodeSP node, const QString &name)
{
    if (!node) return;
    if (node->name() == name) return;
 
    m_d->commandsAdapter.setNodeName(node, name);
 
}
 
void KisNodeManager::setNodeOpacity(KisNodeSP node, qint32 opacity)
{
    if (!node) return;
    if (node->opacity() == opacity) return;
 
    m_d->commandsAdapter.setOpacity(node, opacity);
}
 
void KisNodeManager::setNodeCompositeOp(KisNodeSP node,
                                        const KoCompositeOp* compositeOp)
{
    if (!node) return;
    if (node->compositeOp() == compositeOp) return;
 
    m_d->commandsAdapter.setCompositeOp(node, compositeOp);
}
 
void KisNodeManager::slotImageRequestNodeReselection(KisNodeSP activeNode, const KisNodeList &selectedNodes)
{
    if (activeNode) {
        slotNonUiActivatedNode(activeNode);
    }
    if (!selectedNodes.isEmpty()) {
        slotSetSelectedNodes(selectedNodes);
    }
}
 
void KisNodeManager::slotSetSelectedNodes(const KisNodeList &nodes)
{
    m_d->selectedNodes = nodes;
    Q_EMIT sigUiNeedChangeSelectedNodes(nodes);
}
 
KisNodeList KisNodeManager::selectedNodes()
{
    return m_d->selectedNodes;
}
 
KisNodeSelectionAdapter* KisNodeManager::nodeSelectionAdapter() const
{
    return m_d->nodeSelectionAdapter.data();
}
 
KisNodeInsertionAdapter* KisNodeManager::nodeInsertionAdapter() const
{
    return m_d->nodeInsertionAdapter.data();
}
 
KisNodeDisplayModeAdapter *KisNodeManager::nodeDisplayModeAdapter() const
{
    return m_d->nodeDisplayModeAdapter.data();
}
 
bool KisNodeManager::isNodeHidden(KisNodeSP node, bool isGlobalSelectionHidden)
{
    if (node && node->isFakeNode()) {
        return true;
    }
 
    if (isGlobalSelectionHidden && dynamic_cast<KisSelectionMask *>(node.data()) &&
            (!node->parent() || !node->parent()->parent())) {
        return true;
    }
 
    return false;
}
 
bool KisNodeManager::trySetNodeProperties(KisNodeSP node, KisImageSP image, KisBaseNode::PropertyList properties) const
{
    const KisPaintLayer *paintLayer = dynamic_cast<KisPaintLayer*>(node.data());
    if (paintLayer) {
        const auto onionSkinOn = KisLayerPropertiesIcons::getProperty(KisLayerPropertiesIcons::onionSkins, true);
 
        if (properties.contains(onionSkinOn)) {
            const KisPaintDeviceSP &paintDevice = paintLayer->paintDevice();
            if (paintDevice && paintDevice->defaultPixel().opacityU8() == 255) {
                m_d->view->showFloatingMessage(i18n("Onion skins require a layer with transparent background."), QIcon());
                return false;
            }
        }
    }
 
    KisNodePropertyListCommand::setNodePropertiesAutoUndo(node, image, properties);
 
    return true;
}
 
void KisNodeManager::nodeOpacityChanged(qreal opacity)
{
    KisNodeSP node = activeNode();
 
    setNodeOpacity(node, convertOpacityToInt(opacity));
}
 
void KisNodeManager::nodeCompositeOpChanged(const KoCompositeOp* op)
{
    KisNodeSP node = activeNode();
 
    setNodeCompositeOp(node, op);
}
 
void KisNodeManager::duplicateActiveNode()
{
    KUndo2MagicString actionName = kundo2_i18n("Duplicate Nodes");
    KisNodeJugglerCompressed *juggler = m_d->lazyGetJuggler(actionName);
    juggler->duplicateNode(selectedNodes());
}
 
KisNodeJugglerCompressed* KisNodeManager::Private::lazyGetJuggler(const KUndo2MagicString &actionName)
{
    KisImageWSP image = view->image();
 
    if (!nodeJuggler ||
            (nodeJuggler &&
             (nodeJuggler->isEnded() ||
              !nodeJuggler->canMergeAction(actionName)))) {
 
        nodeJuggler = new KisNodeJugglerCompressed(actionName, image, q, 750);
        nodeJuggler->setAutoDelete(true);
    }
 
    return nodeJuggler;
}
 
void KisNodeManager::raiseNode()
{
    if (!canMoveLayers(selectedNodes())) return;
 
    KUndo2MagicString actionName = kundo2_i18n("Raise Nodes");
    KisNodeJugglerCompressed *juggler = m_d->lazyGetJuggler(actionName);
    juggler->raiseNode(selectedNodes());
}
 
void KisNodeManager::lowerNode()
{
    if (!canMoveLayers(selectedNodes())) return;
 
    KUndo2MagicString actionName = kundo2_i18n("Lower Nodes");
    KisNodeJugglerCompressed *juggler = m_d->lazyGetJuggler(actionName);
    juggler->lowerNode(selectedNodes());
}
 
void KisNodeManager::removeSingleNode(KisNodeSP node)
{
    if (!node || !node->parent()) {
        return;
    }
 
    KisNodeList nodes;
    nodes << node;
    removeSelectedNodes(nodes);
}
 
void KisNodeManager::removeSelectedNodes(KisNodeList nodes)
{
    if (!canModifyLayers(nodes)) return;
 
    KUndo2MagicString actionName = kundo2_i18n("Remove Nodes");
    KisNodeJugglerCompressed *juggler = m_d->lazyGetJuggler(actionName);
    juggler->removeNode(nodes);
}
 
void KisNodeManager::removeNode()
{
    removeSelectedNodes(selectedNodes());
}
 
void KisNodeManager::mirrorNodeX()
{
    KisNodeList nodes = selectedNodes();
 
    KUndo2MagicString commandName;
    if (nodes.size() == 1 && nodes[0]->inherits("KisMask")) {
        commandName = kundo2_i18n("Mirror Mask Horizontally");
    }
    else {
        commandName = kundo2_i18np("Mirror Layer Horizontally", "Mirror %1 Layers Horizontally", nodes.size());
    }
    mirrorNodes(nodes, commandName, Qt::Horizontal, m_d->view->selection());
}
 
void KisNodeManager::mirrorNodeY()
{
    KisNodeList nodes = selectedNodes();
 
    KUndo2MagicString commandName;
    if (nodes.size() == 1 && nodes[0]->inherits("KisMask")) {
        commandName = kundo2_i18n("Mirror Mask Vertically");
    }
    else {
        commandName = kundo2_i18np("Mirror Layer Vertically", "Mirror %1 Layers Vertically", nodes.size());
    }
    mirrorNodes(nodes, commandName, Qt::Vertical, m_d->view->selection());
}
 
void KisNodeManager::mirrorAllNodesX()
{
    KisNodeSP node = m_d->view->image()->root();
    mirrorNode(node, kundo2_i18n("Mirror All Layers Horizontally"),
               Qt::Horizontal, m_d->view->selection());
}
 
void KisNodeManager::mirrorAllNodesY()
{
    KisNodeSP node = m_d->view->image()->root();
    mirrorNode(node, kundo2_i18n("Mirror All Layers Vertically"),
               Qt::Vertical, m_d->view->selection());
}
 
void KisNodeManager::activateNextNode(bool siblingsOnly)
{
    KisNodeSP activeNode = this->activeNode();
    if (!activeNode) return;
 
    KisNodeSP nextNode = activeNode->nextSibling();
 
    if (!siblingsOnly) {
        // Recurse groups...
        while (nextNode && nextNode->childCount() > 0) {
            nextNode = nextNode->firstChild();
        }
 
        // Out of nodes? Back out of group...
        if (!nextNode && activeNode->parent()) {
            nextNode = activeNode->parent();
        }
    }
 
    // Skip nodes hidden from tree view..
    while (nextNode && isNodeHidden(nextNode, m_d->nodeDisplayModeAdapter->showGlobalSelectionMask())) {
        nextNode = nextNode->nextSibling();
    }
 
    // Select node, unless root..
    if (nextNode && nextNode->parent()) {
        slotNonUiActivatedNode(nextNode);
    }
}
 
void KisNodeManager::activateNextSiblingNode()
{
    activateNextNode(true);
}
 
void KisNodeManager::activatePreviousNode(bool siblingsOnly)
{
    KisNodeSP activeNode = this->activeNode();
    if (!activeNode) return;
 
    KisNodeSP nextNode = activeNode->prevSibling();
 
    if (!siblingsOnly) {
        // Enter groups..
        if (activeNode->childCount() > 0) {
            nextNode = activeNode->lastChild();
        }
 
        // Out of nodes? Back out of group...
        if (!nextNode && activeNode->parent()) {
            nextNode = activeNode->parent()->prevSibling();
        }
    }
 
    // Skip nodes hidden from tree view..
    while (nextNode && isNodeHidden(nextNode, m_d->nodeDisplayModeAdapter->showGlobalSelectionMask())) {
        nextNode = nextNode->prevSibling();
    }
 
    // Select node, unless root..
    if (nextNode && nextNode->parent()) {
        slotNonUiActivatedNode(nextNode);
    }
}
 
void KisNodeManager::activatePreviousSiblingNode()
{
    activatePreviousNode(true);
}
 
void KisNodeManager::switchToPreviouslyActiveNode()
{
    if (m_d->previouslyActiveNode && m_d->previouslyActiveNode->parent()) {
        slotNonUiActivatedNode(m_d->previouslyActiveNode);
    }
}
 
void KisNodeManager::mirrorNode(KisNodeSP node,
                                const KUndo2MagicString& actionName,
                                Qt::Orientation orientation,
                                KisSelectionSP selection)
{
    KisNodeList nodes = {node};
    mirrorNodes(nodes, actionName, orientation, selection);
}
 
void KisNodeManager::mirrorNodes(KisNodeList nodes,
                                const KUndo2MagicString& actionName,
                                Qt::Orientation orientation,
                                KisSelectionSP selection)
{
    Q_FOREACH(KisNodeSP node, nodes) {
        if (!canModifyLayer(node)) return;
    }
 
    KisImageSignalVector emitSignals;
 
    KisProcessingApplicator applicator(m_d->view->image(), nodes,
                                       KisProcessingApplicator::RECURSIVE,
                                       emitSignals, actionName);
 
    KisProcessingVisitorSP visitor;
 
    if (selection) {
        visitor = new KisMirrorProcessingVisitor(selection, orientation);
    } else {
        visitor = new KisMirrorProcessingVisitor(m_d->view->image()->bounds(), orientation);
    }
 
    if (!selection) {
        applicator.applyVisitorAllFrames(visitor, KisStrokeJobData::CONCURRENT);
    } else {
        applicator.applyVisitor(visitor, KisStrokeJobData::CONCURRENT);
    }
 
    applicator.end();
 
    nodesUpdated();
}
 
void KisNodeManager::Private::saveDeviceAsImage(KisPaintDeviceSP device,
                                                const QString &defaultName,
                                                const QRect &bounds,
                                                qreal xRes,
                                                qreal yRes,
                                                quint8 opacity)
{
    KoFileDialog dialog(view->mainWindowAsQWidget(), KoFileDialog::SaveFile, "savenodeasimage");
    dialog.setCaption(i18n("Export \"%1\"", defaultName));
    dialog.setDefaultDir(QStandardPaths::writableLocation(QStandardPaths::PicturesLocation));
    dialog.setMimeTypeFilters(KisImportExportManager::supportedMimeTypes(KisImportExportManager::Export));
    QString filename = dialog.filename();
 
    if (filename.isEmpty()) return;
 
    QString mimefilter = KisMimeDatabase::mimeTypeForFile(filename, false);
 
    QScopedPointer<KisDocument> doc(KisPart::instance()->createDocument());
 
    KisImageSP dst = new KisImage(doc->createUndoStore(),
                                  bounds.width(),
                                  bounds.height(),
                                  device->compositionSourceColorSpace(),
                                  defaultName);
    dst->setResolution(xRes, yRes);
    doc->setCurrentImage(dst);
    KisPaintLayer* paintLayer = new KisPaintLayer(dst, "paint device", opacity);
    paintLayer->paintDevice()->makeCloneFrom(device, bounds);
    dst->addNode(paintLayer, dst->rootLayer(), KisLayerSP(0));
 
    dst->initialRefreshGraph();
 
    if (!doc->exportDocumentSync(filename, mimefilter.toLatin1())) {
        QMessageBox::warning(qApp->activeWindow(),
                             i18nc("@title:window", "Krita"),
                             i18n("Could not save the layer. %1", doc->errorMessage().toUtf8().data()),
                             QMessageBox::Ok);
 
    }
}
 
void KisNodeManager::saveNodeAsImage()
{
    KisNodeSP node = activeNode();
 
    if (!node) {
        warnKrita << "BUG: Save Node As Image was called without any node selected";
        return;
    }
 
    KisPaintDeviceSP saveDevice = node->projection();
 
    if (!saveDevice) {
        m_d->view->showFloatingMessage(i18nc("warning message when trying to export a transform mask", "Layer has no pixel data"), QIcon());
        return;
    }
 
    KisImageSP image = m_d->view->image();
    QRect saveRect = image->bounds() | node->exactBounds();
 
    m_d->saveDeviceAsImage(saveDevice,
                           node->name(),
                           saveRect,
                           image->xRes(), image->yRes(),
                           node->opacity());
}
 
#include "SvgWriter.h"
 
void KisNodeManager::saveVectorLayerAsImage()
{
    KisShapeLayerSP shapeLayer = qobject_cast<KisShapeLayer*>(activeNode().data());
    if (!shapeLayer) {
        return;
    }
 
    KoFileDialog dialog(m_d->view->mainWindowAsQWidget(), KoFileDialog::SaveFile, "savenodeasimage");
    dialog.setCaption(i18nc("@title:window", "Export to SVG"));
    dialog.setDefaultDir(QStandardPaths::writableLocation(QStandardPaths::PicturesLocation));
    dialog.setMimeTypeFilters(QStringList() << "image/svg+xml", "image/svg+xml");
    QString filename = dialog.filename();
 
    if (filename.isEmpty()) return;
 
    QUrl url = QUrl::fromLocalFile(filename);
 
    if (url.isEmpty()) return;
 
    const QSizeF sizeInPx = m_d->view->image()->bounds().size();
    const QSizeF sizeInPt(sizeInPx.width() / m_d->view->image()->xRes(),
                          sizeInPx.height() / m_d->view->image()->yRes());
 
    QList<KoShape*> shapes = shapeLayer->shapes();
    std::sort(shapes.begin(), shapes.end(), KoShape::compareShapeZIndex);
 
    SvgWriter writer(shapes);
    if (!writer.save(filename, sizeInPt, true)) {
        QMessageBox::warning(qApp->activeWindow(), i18nc("@title:window", "Krita"), i18n("Could not save to svg: %1", filename));
    }
}
 
void KisNodeManager::slotSplitAlphaIntoMask()
{
    KisNodeSP node = activeNode();
    if (!canModifyLayer(node)) return;
 
    // guaranteed by KisActionManager
    KIS_ASSERT_RECOVER_RETURN(node->hasEditablePaintDevice());
 
    KisLayerUtils::splitAlphaToMask(node->image(), node, m_d->maskManager.createMaskNameCommon(node, "KisTransparencyMask",  i18n("Transparency Mask")));
}
 
void KisNodeManager::Private::mergeTransparencyMaskAsAlpha(bool writeToLayers)
{
    KisNodeSP node = q->activeNode();
    KisNodeSP parentNode = node->parent();
 
    // guaranteed by KisActionManager
    KIS_ASSERT_RECOVER_RETURN(node->inherits("KisTransparencyMask"));
 
    if (writeToLayers && (!parentNode->hasEditablePaintDevice() || !node->isEditable(false))) {
        QMessageBox::information(view->mainWindowAsQWidget(),
                                 i18nc("@title:window", "Layer %1 is not editable", parentNode->name()),
                                 i18n("Cannot write alpha channel of "
                                      "the parent layer \"%1\".\n"
                                      "The operation will be cancelled.", parentNode->name()));
        return;
    }
 
    KisPaintDeviceSP dstDevice;
    if (writeToLayers) {
        KIS_ASSERT_RECOVER_RETURN(parentNode->paintDevice());
        dstDevice = parentNode->paintDevice();
    } else {
        KisPaintDeviceSP copyDevice = parentNode->paintDevice();
        if (!copyDevice) {
            copyDevice = parentNode->original();
        }
        dstDevice = new KisPaintDevice(*copyDevice);
    }
 
    const KoColorSpace *dstCS = dstDevice->colorSpace();
 
    KisPaintDeviceSP selectionDevice = node->paintDevice();
    KIS_ASSERT_RECOVER_RETURN(selectionDevice->colorSpace()->pixelSize() == 1);
 
    const QRect processRect =
            selectionDevice->exactBounds() |
            dstDevice->exactBounds() |
            selectionDevice->defaultBounds()->bounds();
 
    QScopedPointer<KisTransaction> transaction;
 
    if (writeToLayers) {
        commandsAdapter.beginMacro(kundo2_i18n("Write Alpha into a Layer"));
        transaction.reset(new KisTransaction(kundo2_noi18n("__write_alpha_channel__"), dstDevice));
    }
 
    KisSequentialIterator srcIt(selectionDevice, processRect);
    KisSequentialIterator dstIt(dstDevice, processRect);
 
    while (srcIt.nextPixel() && dstIt.nextPixel()) {
        quint8 *alpha8Ptr = srcIt.rawData();
        quint8 *dstPtr = dstIt.rawData();
 
        dstCS->setOpacity(dstPtr, *alpha8Ptr, 1);
    }
 
    if (writeToLayers) {
        commandsAdapter.addExtraCommand(transaction->endAndTake());
        commandsAdapter.removeNode(node);
        commandsAdapter.endMacro();
    } else {
        KisImageWSP image = view->image();
        QRect saveRect = image->bounds();
 
        saveDeviceAsImage(dstDevice, parentNode->name(),
                          saveRect,
                          image->xRes(), image->yRes(),
                          OPACITY_OPAQUE_U8);
    }
}
 
 
void KisNodeManager::slotSplitAlphaWrite()
{
    m_d->mergeTransparencyMaskAsAlpha(true);
}
 
void KisNodeManager::slotSplitAlphaSaveMerged()
{
    m_d->mergeTransparencyMaskAsAlpha(false);
}
 
void KisNodeManager::toggleLock()
{
    KisNodeList nodes = this->selectedNodes();
    KisNodeSP active = activeNode();
    if (nodes.isEmpty() || !active) return;
 
    bool isLocked = active->userLocked();
 
    for (auto &node : nodes) {
        KisLayerPropertiesIcons::setNodePropertyAutoUndo(node, KisLayerPropertiesIcons::locked, !isLocked, m_d->view->image());
    }
}
 
void KisNodeManager::toggleVisibility()
{
    KisNodeList nodes = this->selectedNodes();
    KisNodeSP active = activeNode();
    if (nodes.isEmpty() || !active) return;
 
    bool isVisible = active->visible();
 
    for (auto &node : nodes) {
        KisLayerPropertiesIcons::setNodePropertyAutoUndo(node, KisLayerPropertiesIcons::visible, !isVisible, m_d->view->image());
    }
}
 
void KisNodeManager::toggleAlphaLock()
{
    KisNodeList nodes = this->selectedNodes();
    KisNodeSP active = activeNode();
    if (nodes.isEmpty() || !active) return;
 
    auto layer = qobject_cast<KisPaintLayer*>(active.data());
    if (!layer) {
        return;
    }
 
    bool isAlphaLocked = layer->alphaLocked();
    for (auto &node : nodes) {
        auto layer = qobject_cast<KisPaintLayer*>(node.data());
        if (layer) {
            KisLayerPropertiesIcons::setNodePropertyAutoUndo(node, KisLayerPropertiesIcons::alphaLocked, !isAlphaLocked, m_d->view->image());
        }
    }
}
 
void KisNodeManager::toggleInheritAlpha()
{
    KisNodeList nodes = this->selectedNodes();
    KisNodeSP active = activeNode();
    if (nodes.isEmpty() || !active) return;
 
    auto layer = qobject_cast<KisLayer*>(active.data());
    if (!layer) {
        return;
    }
 
    bool isAlphaDisabled = layer->alphaChannelDisabled();
    for (auto &node : nodes) {
        auto layer = qobject_cast<KisLayer*>(node.data());
        if (layer) {
            KisLayerPropertiesIcons::setNodePropertyAutoUndo(node, KisLayerPropertiesIcons::inheritAlpha, !isAlphaDisabled, m_d->view->image());
        }
    }
}
 
void KisNodeManager::colorOverlayMaskProperties(KisNodeSP node)
{
    Q_ASSERT(node);
    KisLayerSP layer = qobject_cast<KisLayer*>(node.data());
    if (!layer) {
        return;
    }
 
    KisFilterMaskSP mask = layer->colorOverlayMask();
    if (!mask) {
        // This layer does not use fast color overlay mask.
        return;
    }
 
    nodePropertiesIgnoreSelection(mask);
}
 
void KisNodeManager::cutLayersToClipboard()
{
    KisNodeList nodes = this->selectedNodes();
    if (nodes.isEmpty()) return;
 
    KisNodeList::Iterator it = nodes.begin();
    while (it != nodes.end()) {
        // make sure the deleted nodes aren't referenced here again
        if (!it->data()->parent()) {
            nodes.erase(it);
        }
        it++;
    }
 
    KisClipboard::instance()->setLayers(nodes, m_d->view->image(), false);
 
    if (canModifyLayers(nodes)) {
        KUndo2MagicString actionName = kundo2_i18n("Cut Nodes");
        KisNodeJugglerCompressed *juggler = m_d->lazyGetJuggler(actionName);
        juggler->removeNode(nodes);
    }
}
 
void KisNodeManager::copyLayersToClipboard()
{
    KisNodeList nodes = this->selectedNodes();
    KisClipboard::instance()->setLayers(nodes, m_d->view->image(), true);
}
 
void KisNodeManager::pasteLayersFromClipboard(bool changeOffset, QPointF offset, KisProcessingApplicator *applicator)
{
    const QMimeData *data = KisClipboard::instance()->layersMimeData();
    if (!data) return;
 
    KisNodeSP activeNode = this->activeNode();
 
    KisShapeController *shapeController = dynamic_cast<KisShapeController*>(m_d->imageView->document()->shapeController());
    Q_ASSERT(shapeController);
 
    KisDummiesFacadeBase *dummiesFacade = dynamic_cast<KisDummiesFacadeBase*>(m_d->imageView->document()->shapeController());
    Q_ASSERT(dummiesFacade);
 
    const bool copyNode = false;
    KisImageSP image = m_d->view->image();
    KisNodeDummy *parentDummy = dummiesFacade->dummyForNode(activeNode ? activeNode : image->root());
    KisNodeDummy *aboveThisDummy = parentDummy ? parentDummy->lastChild() : 0;
 
    KisMimeData::insertMimeLayers(data,
                                  image,
                                  shapeController,
                                  parentDummy,
                                  aboveThisDummy,
                                  copyNode,
                                  nodeInsertionAdapter(),
                                  changeOffset,
                                  offset,
                                  applicator);
}
 
bool KisNodeManager::createQuickGroupImpl(KisNodeJugglerCompressed *juggler,
                                          const QString &overrideGroupName,
                                          KisNodeSP *newGroup,
                                          KisNodeSP *newLastChild)
{
    KisNodeSP active = activeNode();
    if (!active) return false;
 
    if (!canMoveLayer(active)) return false;
 
    KisImageSP image = m_d->view->image();
    QString groupName = !overrideGroupName.isEmpty() ? overrideGroupName : image->nextLayerName(i18nc("A group of layers", "Group"));
    KisGroupLayerSP group = new KisGroupLayer(image.data(), groupName, OPACITY_OPAQUE_U8);
 
    KisNodeList nodes1;
    nodes1 << group;
 
    KisNodeList nodes2;
    nodes2 = KisLayerUtils::sortMergeableNodes(image->root(), selectedNodes());
    KisLayerUtils::filterMergeableNodes(nodes2);
 
    if (nodes2.size() == 0) return false;
 
    if (KisLayerUtils::checkIsChildOf(active, nodes2)) {
        active = nodes2.first();
    }
 
    KisNodeSP parent = active->parent();
    KisNodeSP aboveThis = active;
 
    juggler->addNode(nodes1, parent, aboveThis);
    juggler->moveNode(nodes2, group, 0);
 
    *newGroup = group;
    *newLastChild = nodes2.last();
 
    return true;
}
 
void KisNodeManager::createQuickGroup()
{
    KUndo2MagicString actionName = kundo2_i18n("Quick Group");
    KisNodeJugglerCompressed *juggler = m_d->lazyGetJuggler(actionName);
 
    KisNodeSP parent;
    KisNodeSP above;
 
    createQuickGroupImpl(juggler, "", &parent, &above);
}
 
void KisNodeManager::createQuickClippingGroup()
{
    KUndo2MagicString actionName = kundo2_i18n("Quick Clipping Group");
    KisNodeJugglerCompressed *juggler = m_d->lazyGetJuggler(actionName);
 
    KisNodeSP parent;
    KisNodeSP above;
 
    KisImageSP image = m_d->view->image();
    if (createQuickGroupImpl(juggler, image->nextLayerName(i18nc("default name for a clipping group layer", "Clipping Group")), &parent, &above)) {
        KisPaintLayerSP maskLayer = new KisPaintLayer(image.data(), i18nc("default name for quick clip group mask layer", "Mask Layer"), OPACITY_OPAQUE_U8, image->colorSpace());
        maskLayer->disableAlphaChannel(true);
 
        juggler->addNode(KisNodeList() << maskLayer, parent, above);
    }
}
 
void KisNodeManager::quickUngroup()
{
    KisNodeSP active = activeNode();
    if (!active) return;
 
    if (!canModifyLayer(active)) return;
 
    KisNodeSP parent = active->parent();
    KisNodeSP aboveThis = active;
 
    auto checkCanMoveLayers = [this] (KisNodeList nodes, KisNodeSP newParent) -> bool {
        auto incompatibleNode =
            std::find_if(nodes.begin(), nodes.end(),
                [newParent] (KisNodeSP node) {
                    return !newParent->allowAsChild(node);
                });
 
        if (incompatibleNode != nodes.end()) {
            const QString message =
                    newParent->parent() ?
                        i18n("Cannot move layer \"%1\" into new parent \"%2\"",
                             (*incompatibleNode)->name(),
                             newParent->name()) :
                        i18n("Cannot move layer \"%1\" into the root layer",
                             (*incompatibleNode)->name());
            m_d->view->showFloatingMessage(message, QIcon());
            return false;
        }
        return true;
    };
 
    KUndo2MagicString actionName = kundo2_i18n("Quick Ungroup");
 
    if (parent && dynamic_cast<KisGroupLayer*>(active.data())) {
        KisNodeList nodes = active->childNodes(QStringList(), KoProperties());
 
        if (checkCanMoveLayers(nodes, parent)) {
            KisNodeJugglerCompressed *juggler = m_d->lazyGetJuggler(actionName);
            juggler->moveNode(nodes, parent, active);
            juggler->removeNode(KisNodeList() << active);
        }
    } else if (parent && parent->parent()) {
        KisNodeSP grandParent = parent->parent();
 
        KisNodeList allChildNodes = parent->childNodes(QStringList(), KoProperties());
        KisNodeList allSelectedNodes = selectedNodes();
 
        const bool removeParent = KritaUtils::compareListsUnordered(allChildNodes, allSelectedNodes);
 
        if (checkCanMoveLayers(allSelectedNodes, parent)) {
            KisNodeJugglerCompressed *juggler = m_d->lazyGetJuggler(actionName);
            juggler->moveNode(allSelectedNodes, grandParent, parent);
            if (removeParent) {
                juggler->removeNode(KisNodeList() << parent);
            }
        }
    }
}
 
void KisNodeManager::selectLayersImpl(const KoProperties &props, const KoProperties &invertedProps)
{
    KisImageSP image = m_d->view->image();
    KisNodeList nodes = KisLayerUtils::findNodesWithProps(image->root(), props, true);
 
    KisNodeList selectedNodes = this->selectedNodes();
 
    if (KritaUtils::compareListsUnordered(nodes, selectedNodes)) {
        nodes = KisLayerUtils::findNodesWithProps(image->root(), invertedProps, true);
    }
 
    if (!nodes.isEmpty()) {
        slotImageRequestNodeReselection(nodes.last(), nodes);
    }
}
 
void KisNodeManager::selectAllNodes()
{
    KoProperties props;
    selectLayersImpl(props, props);
}
 
void KisNodeManager::selectVisibleNodes()
{
    KoProperties props;
    props.setProperty("visible", true);
 
    KoProperties invertedProps;
    invertedProps.setProperty("visible", false);
 
    selectLayersImpl(props, invertedProps);
}
 
void KisNodeManager::selectLockedNodes()
{
    KoProperties props;
    props.setProperty("locked", true);
 
    KoProperties invertedProps;
    invertedProps.setProperty("locked", false);
 
    selectLayersImpl(props, invertedProps);
}
 
void KisNodeManager::selectInvisibleNodes()
{
    KoProperties props;
    props.setProperty("visible", false);
 
    KoProperties invertedProps;
    invertedProps.setProperty("visible", true);
 
    selectLayersImpl(props, invertedProps);
}
 
void KisNodeManager::selectUnlockedNodes()
{
    KoProperties props;
    props.setProperty("locked", false);
 
    KoProperties invertedProps;
    invertedProps.setProperty("locked", true);
 
    selectLayersImpl(props, invertedProps);
}
 
void KisNodeManager::slotUiActivateNode()
{
    if (!sender()->property("node").isNull()) {
        QString name = sender()->property("node").toString();
        KisNodeSP node = KisLayerUtils::findNodeByName(m_d->imageView->image()->rootLayer(),name);
        if (node) {
            slotUiActivatedNode(node);
        }
    }
}