Differential D8057 Diff 21135 libs/ui/kis_node_model.cpp

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libs/ui/kis_node_model.cpp

Show First 20 Lines • Show All 66 Lines • ▼ Show 20 Line(s)58{
67 QPointer<KisDummiesFacadeBase> dummiesFacade = 0; 67​ QPointer<KisDummiesFacadeBase> dummiesFacade = 0;
68 bool needFinishRemoveRows = false; 68​ bool needFinishRemoveRows = false;
69 bool needFinishInsertRows = false; 69​ bool needFinishInsertRows = false;
70 bool showRootLayer = false; 70​ bool showRootLayer = false;
71 bool showGlobalSelection = false; 71​ bool showGlobalSelection = false;
72 QPersistentModelIndex activeNodeIndex; 72​ QPersistentModelIndex activeNodeIndex;
73 73​
74 QPointer<KisNodeDummy> parentOfRemovedNode = 0; 74​ QPointer<KisNodeDummy> parentOfRemovedNode = 0;
75​
76​ QSet<quintptr> dropEnabled;
75}; 77​};
76 78​
77KisNodeModel::KisNodeModel(QObject * parent) 79​KisNodeModel::KisNodeModel(QObject * parent)
78 : QAbstractItemModel(parent) 80​ : QAbstractItemModel(parent)
79 , m_d(new Private) 81​ , m_d(new Private)
80{ 82​{
81 updateSettings(); 83​ updateSettings();
82 connect(KisConfigNotifier::instance(), SIGNAL(configChanged()), this, SLOT(updateSettings())); 84​ connect(KisConfigNotifier::instance(), SIGNAL(configChanged()), this, SLOT(updateSettings()));
▲ Show 20 Lines • Show All 408 Lines • ▼ Show 20 Line(s)438{
491 493​
492 return QVariant(); 494​ return QVariant();
493} 495​}
494 496​
495Qt::ItemFlags KisNodeModel::flags(const QModelIndex &index) const 497​Qt::ItemFlags KisNodeModel::flags(const QModelIndex &index) const
496{ 498​{
497 if(!m_d->dummiesFacade || !index.isValid()) return Qt::ItemIsDropEnabled; 499​ if(!m_d->dummiesFacade || !index.isValid()) return Qt::ItemIsDropEnabled;
498 500​
499 Qt::ItemFlags flags = Qt::ItemIsEnabled | Qt::ItemIsSelectable | Qt::ItemIsDragEnabled | Qt::ItemIsEditable | Qt::ItemIsDropEnabled; 501​ Qt::ItemFlags flags = Qt::ItemIsEnabled | Qt::ItemIsSelectable | Qt::ItemIsDragEnabled | Qt::ItemIsEditable;
502​ if (m_d->dropEnabled.contains(index.internalId())) {
503​ flags |= Qt::ItemIsDropEnabled;
504​ }
500 return flags; 505​ return flags;
501} 506​}
502 507​
503bool KisNodeModel::setData(const QModelIndex &index, const QVariant &value, int role) 508​bool KisNodeModel::setData(const QModelIndex &index, const QVariant &value, int role)
504{ 509​{
510​ if (role == KisNodeModel::DropEnabled) {
511​ const QMimeData *mimeData = static_cast<const QMimeData*>(value.value<void*>());
512​ setDropEnabled(mimeData);
513​ return true;
514​ }
505 515​
506 if (role == KisNodeModel::ActiveRole || role == KisNodeModel::AlternateActiveRole) { 516​ if (role == KisNodeModel::ActiveRole || role == KisNodeModel::AlternateActiveRole) {
507 QModelIndex parentIndex; 517​ QModelIndex parentIndex;
508 if (!index.isValid() && m_d->parentOfRemovedNode && m_d->dummiesFacade && m_d->indexConverter) { 518​ if (!index.isValid() && m_d->parentOfRemovedNode && m_d->dummiesFacade && m_d->indexConverter) {
509 parentIndex = m_d->indexConverter->indexFromDummy(m_d->parentOfRemovedNode); 519​ parentIndex = m_d->indexConverter->indexFromDummy(m_d->parentOfRemovedNode);
510 m_d->parentOfRemovedNode = 0; 520​ m_d->parentOfRemovedNode = 0;
511 } 521​ }
512 522​
▲ Show 20 Lines • Show All 126 Lines • ▼ Show 20 Line(s)648 return KisMimeData::insertMimeLayers(data,
639 m_d->image, 649​ m_d->image,
640 m_d->shapeController, 650​ m_d->shapeController,
641 parentDummy, 651​ parentDummy,
642 aboveThisDummy, 652​ aboveThisDummy,
643 copyNode, 653​ copyNode,
644 m_d->nodeInsertionAdapter); 654​ m_d->nodeInsertionAdapter);
645} 655​}
646 656​
657​bool KisNodeModel::canDropMimeData(const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &parent) const {
658​ if (parent.isValid()) {
659​ // drop occured on an item. always return true as returning false will mess up
660​ // QT5's drag handling (see KisNodeModel::setDropEnabled).
661​ return true;
662​ } else {
663​ return QAbstractItemModel::canDropMimeData(data, action, row, column, parent);
664​ }
665​}
666​
667​void KisNodeModel::setDropEnabled(const QMimeData *data) {
668​ // what happens here should really happen in KisNodeModel::canDropMimeData(), but QT5
669​ // will mess up if an item's Qt::ItemIsDropEnabled does not match what is returned by
670​ // canDropMimeData; specifically, if we set the flag, but decide in canDropMimeData()
671​ // later on that an "onto" drag is not allowed, QT will display an drop indicator for
672​ // insertion, but not perform any drop when the mouse is released.
673​
674​ // the only robust implementation seems to set all flags correctly, which is done here.
675​
676​ bool copyNode = false;
677​ KisNodeList nodes = KisMimeData::loadNodesFast(data, m_d->image, m_d->shapeController, copyNode);
678​ m_d->dropEnabled.clear();
679​ updateDropEnabled(nodes);
680​}
681​
682​void KisNodeModel::updateDropEnabled(const QList<KisNodeSP> &nodes, QModelIndex parent) {
683​ for (int r = 0; r < rowCount(parent); r++) {
684​ QModelIndex idx = index(r, 0, parent);
685​
686​ KisNodeSP target = nodeFromIndex(idx);
687​
688​ bool dropEnabled = true;
689​ Q_FOREACH (const KisNodeSP &node, nodes) {
690​ if (!target->allowAsChild(node)) {
691​ dropEnabled = false;
692​ break;
693​ }
694​ }
695​ if (dropEnabled) {
696​ m_d->dropEnabled.insert(idx.internalId());
697​ }
698​ emit dataChanged(idx, idx); // indicate to QT that flags() have changed
699​
700​ if (hasChildren(idx)) {
701​ updateDropEnabled(nodes, idx);
702​ }
703​ }
704​}