Java Code Examples for javafx.scene.layout.Region#getLayoutX()

/**
 * Checks if a node's JavaFX region has different layout values than those currently stored in the model.
 *
 * @param node the model instance for the node
 *
 * @return {@code true} if any layout value has changed, {@code false if not}
 */
private boolean checkNodeChanged(final GNode node) {

    final GNodeSkin nodeSkin = skinLookup.lookupNode(node);

    if (nodeSkin == null) {
        return false;
    }

    final Region nodeRegion = nodeSkin.getRoot();

    if (nodeRegion.getLayoutX() != node.getX()) {
        return true;
    } else if (nodeRegion.getLayoutY() != node.getY()) {
        return true;
    } else if (nodeRegion.getWidth() != node.getWidth()) {
        return true;
    } else if (nodeRegion.getHeight() != node.getHeight()) {
        return true;
    }
    return false;
}
 

/**
 * Checks if a joint's JavaFX region has different layout values than those currently stored in the model.
 *
 * @param joint the model instance for the joint
 *
 * @return {@code true} if any layout value has changed, {@code false if not}
 */
private boolean checkJointChanged(final GJoint joint) {

    final GJointSkin jointSkin = skinLookup.lookupJoint(joint);

    if (jointSkin == null) {
        return false;
    }

    final Region jointRegion = jointSkin.getRoot();

    final double jointRegionX = jointRegion.getLayoutX() + jointSkin.getWidth() / 2;
    final double jointRegionY = jointRegion.getLayoutY() + jointSkin.getHeight() / 2;

    if (jointRegionX != joint.getX()) {
        return true;
    } else if (jointRegionY != joint.getY()) {
        return true;
    }
    return false;
}
 

private static void dragEast(MouseEvent event, Wrapper<Point2D> mouseLocation, Region region, double handleRadius) {
	final double deltaX = event.getSceneX() - mouseLocation.value.getX();
	final double newMaxX = region.getLayoutX() + region.getWidth() + deltaX;
	if(newMaxX >= region.getLayoutX() && newMaxX <= region.getParent().getBoundsInLocal().getWidth() - handleRadius) {
		region.setPrefWidth(region.getPrefWidth() + deltaX);
	}
}
 

private static void dragWest(MouseEvent event, Wrapper<Point2D> mouseLocation, Region region, double handleRadius) {
	final double deltaX = event.getSceneX() - mouseLocation.value.getX();
	final double newX = region.getLayoutX() + deltaX;
	if(newX != 0 && newX <= region.getParent().getBoundsInLocal().getWidth() - handleRadius) {
		region.setLayoutX(newX);
		region.setPrefWidth(region.getPrefWidth() - deltaX);
	}
}
 

/**
 * Updates the model's layout values to match those in the skin instances.
 *
 * <p>
 * This method adds set operations to the given compound command but does <b>not</b> execute it.
 * </p>
 *
 * @param command a {@link CompoundCommand} to which the set commands will be added
 * @param model the {@link GModel} whose layout values should be updated
 * @param skinLookup the {@link SkinLookup} in use for this graph editor instance
 */
public static void updateLayoutValues(final CompoundCommand command, final GModel model, final SkinLookup skinLookup) {

    final EditingDomain editingDomain = getEditingDomain(model);

    if (editingDomain != null) {

        for (final GNode node : model.getNodes()) {

            final Region nodeRegion = skinLookup.lookupNode(node).getRoot();

            command.append(SetCommand.create(editingDomain, node, NODE_X, nodeRegion.getLayoutX()));
            command.append(SetCommand.create(editingDomain, node, NODE_Y, nodeRegion.getLayoutY()));
            command.append(SetCommand.create(editingDomain, node, NODE_WIDTH, nodeRegion.getWidth()));
            command.append(SetCommand.create(editingDomain, node, NODE_HEIGHT, nodeRegion.getHeight()));
        }

        for (final GConnection connection : model.getConnections()) {

            for (final GJoint joint : connection.getJoints()) {

                final GJointSkin jointSkin = skinLookup.lookupJoint(joint);
                final Region jointRegion = jointSkin.getRoot();

                final double x = jointRegion.getLayoutX() + jointSkin.getWidth() / 2;
                final double y = jointRegion.getLayoutY() + jointSkin.getHeight() / 2;

                command.append(SetCommand.create(editingDomain, joint, JOINT_X, x));
                command.append(SetCommand.create(editingDomain, joint, JOINT_Y, y));
            }
        }
    }
}
 

/**
 * Gets the layout x and y values from all joints in a list of joint skins.
 *
 * @param jointSkins a list of joint skin instances
 *
 * @return a {@link List} of {@link Point2D} objects containing joint x and y values
 */
public static List<Point2D> getJointPositions(final List<GJointSkin> jointSkins) {

    final List<Point2D> jointPositions = new ArrayList<>();

    for (final GJointSkin jointSkin : jointSkins) {

        final Region region = jointSkin.getRoot();

        final double x = region.getLayoutX() + jointSkin.getWidth() / 2;
        final double y = region.getLayoutY() + jointSkin.getHeight() / 2;

        jointPositions.add(new Point2D(x, y));
    }

    return jointPositions;
}