Examples with DragSource java.awt.dnd.DragSource used on opensource projects

Example 11 with DragSource

use of java.awt.dnd.DragSource in project gdmatrix by gdmatrix.

the class ElementLabel method initComponents.

private void initComponents() {
    setBorder(new EmptyBorder(2, 4, 2, 4));
    addMouseListener(this);
    DragSource dragSource = DragSource.getDefaultDragSource();
    dragSource.createDefaultDragGestureRecognizer(this, DnDConstants.ACTION_COPY, new DragGestureListener() {

        @Override
        public void dragGestureRecognized(DragGestureEvent event) {
            DragSourceListener dragListener = new DragSourceAdapter() {

                @Override
                public void dragDropEnd(DragSourceDropEvent event) {
                    Palette palette = ElementLabel.this.getCategoryPane().getPalette();
                    palette.clearSelectedElement();
                }
            };
            event.startDrag(DragSource.DefaultCopyDrop, ElementLabel.this, dragListener);
        }
    });
}

Example 12 with DragSource

use of java.awt.dnd.DragSource in project Weasis by nroduit.

the class SeriesThumbnail method registerListeners.

@Override
public void registerListeners() {
    super.registerListeners();
    // Reactivate tooltip listener
    ToolTipManager.sharedInstance().registerComponent(this);
    if (dragSource != null) {
        dragSource.removeDragSourceListener(this);
        dragSource.removeDragSourceMotionListener(this);
        removeFocusListener(this);
    }
    addFocusListener(this);
    this.setFocusable(true);
    this.addMouseListener(this);
    dragSource = new DragSource();
    dragSource.createDefaultDragGestureRecognizer(this, DnDConstants.ACTION_COPY, this);
    dragSource.addDragSourceMotionListener(this);
}

Example 13 with DragSource

use of java.awt.dnd.DragSource in project darklaf by weisJ.

the class TransferUtil method setupDnD.

public static <T> Pair<DropTarget, AtomicBoolean> setupDnD(final JComponent c, final int sourceActions, final Class<T> dataType, final Supplier<T> exporter, final Consumer<T> importer, final Function<T, Icon> dragImageCreator) {
    DragSource ds = new DragSource();
    AtomicBoolean dragEnabled = new AtomicBoolean(true);
    TransferHandler handler = new TransferHandler() {

        private final DataFlavor flavor;

        {
            try {
                flavor = new DataFlavor(DataFlavor.javaJVMLocalObjectMimeType + ";class=" + dataType.getName());
            } catch (final ClassNotFoundException e) {
                throw new IllegalStateException(e);
            }
        }

        @Override
        public int getSourceActions(final JComponent c) {
            return sourceActions;
        }

        @Override
        public boolean canImport(final TransferSupport support) {
            return support.isDataFlavorSupported(flavor);
        }

        @Override
        public Icon getVisualRepresentation(final Transferable t) {
            try {
                // noinspection unchecked
                return dragImageCreator.apply((T) t.getTransferData(flavor));
            } catch (UnsupportedFlavorException | IOException e) {
                return null;
            }
        }

        @Override
        protected Transferable createTransferable(final JComponent c) {
            T value = exporter.get();
            setDragImage(IconUtil.iconToImage(dragImageCreator.apply(value), c));
            return new ObjectTransferable<>(value, dataType);
        }

        @Override
        public boolean importData(final TransferSupport support) {
            if (!support.isDrop())
                return false;
            try {
                // noinspection unchecked
                importer.accept((T) support.getTransferable().getTransferData(flavor));
            } catch (final Exception e) {
                LOGGER.log(Level.SEVERE, "Importing failed", e);
            }
            return false;
        }
    };
    c.setTransferHandler(handler);
    ds.createDefaultDragGestureRecognizer(c, sourceActions, dge -> {
        if (!dragEnabled.get())
            return;
        handler.exportAsDrag(c, dge.getTriggerEvent(), dge.getDragAction());
    });
    return new Pair<>(c.getDropTarget(), dragEnabled);
}