@Override
public List<? extends Shape> getHandles(Translate translate, Scale scale, ReadOnlyObjectProperty<Color> colorProperty) {
   List<Shape> handles = new ArrayList<>();

   IntStream.range(0, getPoints().size() / 2).forEach(idx -> {
      Handle handle = new Handle(idx, getPoints());
      handles.add(handle);

      // Maintain constant handle size at different zoom level
      scale.addEventHandler(TransformChangedEvent.TRANSFORM_CHANGED, event -> {
         handle.setRadius(HANDLE_RADIUS / scale.getX());
      });
      handle.fillProperty().bind(colorProperty);
      handle.setRadius(HANDLE_RADIUS / scale.getX());
      handle.getTransforms().addAll(translate, scale);
   });

   return handles;
}
 

@Override
public List<? extends Shape> getHandles(Translate translate, Scale scale, ReadOnlyObjectProperty<Color> colorProperty) {
   // 4 corner resize handles
   List<Rectangle> handles = Arrays.asList(new Rectangle[]{
         createHandle(Location.NW, cursorNW),
         createHandle(Location.NE, cursorNE),
         createHandle(Location.SE, cursorSE),
         createHandle(Location.SW, cursorSW)});

   // Maintain constant handle size at different zoom level
   handles.forEach(handle -> {
      scale.addEventHandler(TransformChangedEvent.TRANSFORM_CHANGED, event -> {
         handle.setWidth(HANDLE_SIZE / scale.getX());
         handle.setHeight(HANDLE_SIZE / scale.getY());
      });
      handle.fillProperty().bind(colorProperty);
      handle.setWidth(HANDLE_SIZE / scale.getX());
      handle.setHeight(HANDLE_SIZE / scale.getY());
      handle.getTransforms().addAll(translate, scale);
   });
   return handles;
}
 

/**
 * Wrap a given Node (e.g. a Pin button) in a {@link StackPane} to be placed on to the map. Applies a scaling function (used to scales it
 * relative to the current zoom factor) and translations (to keep it at a given world space position and centered).
 */
static StackPane wrapGui(Node node, Vector2dc position, DoubleBinding scale, DisplayViewport viewport) {
	StackPane stack = new StackPane(node);
	Translate center = new Translate();
	center.xProperty().bind(stack.widthProperty().multiply(-0.5));
	center.yProperty().bind(stack.heightProperty().multiply(-0.5));
	if (position != null)
		stack.getTransforms().add(new Translate(position.x(), position.y()));
	if (scale != null) {
		Scale scaleTransform = new Scale();
		scaleTransform.xProperty().bind(scale);
		scaleTransform.yProperty().bind(scale);
		stack.getTransforms().add(scaleTransform);
	}
	stack.getTransforms().add(center);
	stack.setVisible(false);
	stack.setPickOnBounds(false);
	stack.setOpacity(0.0);
	return stack;
}
 

@Override
public Region getGraphic(Graph graph) {
	final double width = 50;
	final double height = 50;

	final Polygon view = new Polygon(width / 2, 0, width, height, 0, height);

	view.setStroke(Color.RED);
	view.setFill(Color.RED);

	final Pane pane = new Pane(view);
	pane.setPrefSize(50, 50);
	final Scale scale = new Scale(1, 1);
	view.getTransforms().add(scale);
	scale.xProperty().bind(pane.widthProperty().divide(50));
	scale.yProperty().bind(pane.heightProperty().divide(50));
	CellGestures.makeResizable(pane);

	return pane;
}
 

@Override
public void start(Stage primaryStage) {
    primaryStage.setTitle("Digital Clock");
    Group root = new Group();
    Scene scene = new Scene(root, 480, 412);
    // add background image
    ImageView background = new ImageView(new Image(getClass().getResourceAsStream("DigitalClock-background.png")));
    // add digital clock
    clock = new Clock(Color.ORANGERED, Color.rgb(50,50,50));
    clock.setLayoutX(45);
    clock.setLayoutY(186);
    clock.getTransforms().add(new Scale(0.83f, 0.83f, 0, 0));
    // add background and clock to sample
    root.getChildren().addAll(background, clock);
    primaryStage.setScene(scene);
    primaryStage.show();
}
 

/** Update lines that indicate model's size in edit mode */
private void updateModelSizeIndicators()
{
    int width = model.propWidth().getValue();
    int height = model.propHeight().getValue();

    final ObservableList<Transform> transforms = widget_parent.getTransforms();
    if (transforms.size() > 0  &&  transforms.get(0) instanceof Scale)
    {
        final Scale scale = (Scale) transforms.get(0);
        width  *= scale.getX();
        height *= scale.getY();
    }

    horiz_bound.setStartY(height);
    horiz_bound.setEndX(width);
    horiz_bound.setEndY(height);

    vert_bound.setStartX(width);
    vert_bound.setEndY(height);
    vert_bound.setEndX(width);
}
 

private void print(final Node node)
{
    try
    {
        // Select printer
        final PrinterJob job = Objects.requireNonNull(PrinterJob.createPrinterJob(), "Cannot create printer job");
        final Scene scene = Objects.requireNonNull(node.getScene(), "Missing Scene");

        if (! job.showPrintDialog(scene.getWindow()))
            return;

        // Get Screenshot
        final WritableImage screenshot = node.snapshot(null, null);

        // Scale image to full page
        final Printer printer = job.getPrinter();
        final Paper paper = job.getJobSettings().getPageLayout().getPaper();
        final PageLayout pageLayout = printer.createPageLayout(paper,
                                                               PageOrientation.LANDSCAPE,
                                                               Printer.MarginType.DEFAULT);
        final double scaleX = pageLayout.getPrintableWidth() / screenshot.getWidth();
        final double scaleY = pageLayout.getPrintableHeight() / screenshot.getHeight();
        final double scale = Math.min(scaleX, scaleY);
        final ImageView print_node = new ImageView(screenshot);
        print_node.getTransforms().add(new Scale(scale, scale));

        // Print off the UI thread
        JobManager.schedule(Messages.Print, monitor ->
        {
            if (job.printPage(print_node))
                job.endJob();
        });
    }
    catch (Exception ex)
    {
        ExceptionDetailsErrorDialog.openError(node, Messages.Print, Messages.PrintErr, ex);
    }
}
 

@Override
public void start(Stage primaryStage) throws Exception {
	final Polygon p = new Polygon(10, 30, 20, 20, 20, 40);
	p.setFill(Color.RED);
	p.setStroke(Color.BLACK);

	final Rectangle r = new Rectangle();
	r.setFill(new Color(0, 0, 1, 0.5));
	r.setX(p.getLayoutBounds().getMinX());
	r.setY(p.getLayoutBounds().getMinY());
	r.setWidth(p.getLayoutBounds().getWidth());
	r.setHeight(p.getLayoutBounds().getHeight());

	Group g = new Group(r, p);
	g.getTransforms().add(new Scale(10, 10));
	Scene scene = new Scene(g, 500, 500);
	primaryStage.setScene(scene);
	primaryStage.sizeToScene();
	primaryStage.show();
}
 

@Override
protected void layoutChildren() {
    // calculate scale
    double scale = getWidth() / computePrefWidth(-1);
    getChildren().stream().filter(child -> child instanceof Region).forEach(child -> {
        Region region = (Region) child;
        if (region.getShape() != null) {
            region.resize(
                    region.getShape().getLayoutBounds().getMaxX(),
                    region.getShape().getLayoutBounds().getMaxY()
            );
            region.getTransforms().setAll(new Scale(scale, scale, 0, 0));
        } else {
            region.autosize();
        }
    });
}
 

/**
 * Creates a thumbnail from the given selection in the given file.
 * @param templateFile The file of the future thumbnail.
 * @param selection The set of shapes composing the template.
 */
private void createTemplateThumbnail(final File templateFile, final javafx.scene.Group selection) {
	final Bounds bounds = selection.getBoundsInParent();
	final double scale = 70d / Math.max(bounds.getWidth(), bounds.getHeight());
	final WritableImage img = new WritableImage((int) (bounds.getWidth() * scale), (int) (bounds.getHeight() * scale));
	final SnapshotParameters snapshotParameters = new SnapshotParameters();

	snapshotParameters.setFill(Color.WHITE);
	snapshotParameters.setTransform(new Scale(scale, scale));
	selection.snapshot(snapshotParameters, img);

	final BufferedImage bufferedImage = SwingFXUtils.fromFXImage(img, null);

	try {
		ImageIO.write(bufferedImage, "png", templateFile);  //NON-NLS
	}catch(final IOException ex) {
		BadaboomCollector.INSTANCE.add(ex);
	}
	bufferedImage.flush();
}
 

private void initModel(Annotation model) {
   scale = new Scale(1, 1);
   translate = new Translate(PADDING, PADDING);
   rotate = new Rotate();
   board.getTransforms().setAll(scale, rotate);

   scale.addEventHandler(TransformChangedEvent.TRANSFORM_CHANGED, event -> {
      // Maintain constant padding at different zoom level
      board.setPadding(new Insets(max(PADDING / scale.getX(), PADDING / scale.getY())));

      canvas.setWidth(imageView.getBoundsInLocal().getWidth());
      canvas.setHeight(imageView.getBoundsInLocal().getHeight());
   });

   scale.setX(1);
   scale.setY(1);
   rotate.setAngle(0);
   selectedObjectProperty.setValue(null);
   tagCoordsProperty.set("");
   objectsProperty.clear();
   hintsProperty.clear();
   imageView.setImage(model == null ? null : model.getSize().getImage());
   imageView.setCache(true);
   if (model != null && model.getObjects().size() > 0) {
      model.getObjects().forEach(obj -> createObjectTag(obj));
      statusProperty.set(MessageFormat.format(bundle.getString("msg.objectsCount"), model.getObjects().size()));
   }
   else {
      statusProperty.set(bundle.getString("msg.noObjects"));
   }
   findHints();
}
 

public ContentResizerPane(Node content) {
    this.content = content;

    getChildren().add(content);

    Scale scale = new Scale(1, 1);
    content.getTransforms().add(scale);

    resizeFActor.addListener((ObservableValue<? extends Number> observable, Number oldValue, Number newValue) -> {
        scale.setX(newValue.doubleValue());
        scale.setY(newValue.doubleValue());
        requestLayout();
    });
}
 

public PinDecoration(DisplayViewport viewport) {
	this.viewport = Objects.requireNonNull(viewport);
	this.viewport.scaleProperty.addListener(new WeakChangeListener<>(this));

	world = new AnchorPane();
	world.getStylesheets().add("/de/piegames/blockmap/gui/decoration/pins.css");
	{
		Scale s = new Scale();
		s.xProperty().bind(viewport.scaleProperty);
		s.yProperty().bind(viewport.scaleProperty);
		Translate t = new Translate();
		t.xProperty().bind(Bindings.createDoubleBinding(() -> viewport.translationProperty.get().x(), viewport.translationProperty));
		t.yProperty().bind(Bindings.createDoubleBinding(() -> viewport.translationProperty.get().y(), viewport.translationProperty));
		world.getTransforms().add(s);
		world.getTransforms().add(t);
	}
	world.setPickOnBounds(false);
	getChildren().add(world);

	setMinSize(0, 0);
	setPrefSize(0, 0);
	setPickOnBounds(false);

	{
		final Rectangle outputClip = new Rectangle();
		this.setClip(outputClip);

		this.layoutBoundsProperty().addListener((ov, oldValue, newValue) -> {
			outputClip.setWidth(newValue.getWidth());
			outputClip.setHeight(newValue.getHeight());
		});
	}

	visiblePins.addListener((InvalidationListener) e -> executeUpdate.requestExecution());
}
 

/**
 * Scales the game rendering (as defined by gameResolution) to fill the current
 * stage size. <b>Should be called whenever stage size or game resolution is
 * changed</b> - currently called only when toggling fullscreen mode.
 */
private void scaleResolution() {
	canvas.getTransforms().clear();
	canvas.setTranslateX(-scene.getWidth() / 2 + gameResolution.x / 2); // recenters after scale
	canvas.setTranslateY(-scene.getHeight() / 2 + gameResolution.y / 2); // recenters after scale
	if (!(scene.getWidth() == gameResolution.x && scene.getHeight() == gameResolution.y)) {
		canvas.setWidth(gameResolution.x);
		canvas.setHeight(gameResolution.y);
		width = (int) gameResolution.x;
		height = (int) gameResolution.y;
		final double scaleX = scene.getWidth() / gameResolution.x;
		final double scaleY = scene.getHeight() / gameResolution.y;
		canvas.getTransforms().setAll(new Scale(scaleX, scaleY)); // scale canvas
	}
}
 

public DigitalClock() {
    super(480, 412);
    // add background image
    ImageView background = new ImageView(new Image(getClass().getResourceAsStream("DigitalClock-background.png")));
    // add digital clock
    clock = new Clock(Color.ORANGERED, Color.rgb(50,50,50));
    clock.setLayoutX(45);
    clock.setLayoutY(186);
    clock.getTransforms().add(new Scale(0.83f, 0.83f, 0, 0));
    // add background and clock to sample
    getChildren().addAll(background, clock);
}
 

public DigitalClock() {
    super(480, 412);
    // add background image
    ImageView background = new ImageView(new Image(getClass().getResourceAsStream("DigitalClock-background.png")));
    // add digital clock
    clock = new Clock(Color.ORANGERED, Color.rgb(50,50,50));
    clock.setLayoutX(45);
    clock.setLayoutY(186);
    clock.getTransforms().add(new Scale(0.83f, 0.83f, 0, 0));
    // add background and clock to sample
    getChildren().addAll(background, clock);
}
 

/** @return Zoom factor, 1.0 for 1:1 */
public double getZoom()
{
    final List<Transform> transforms = widget_parent.getTransforms();
    if (transforms.isEmpty()  ||
        transforms.size() > 1 ||
        ! (transforms.get(0) instanceof Scale))
        return 1.0;
    // Have one 'scale'
    final Scale scale = (Scale) transforms.get(0);
    // Expect scaling in X == Y, but just in case return average
    return ( scale.getX() + scale.getY() ) / 2.0;
}
 

@Override
public ScrollPane createJFXNode() throws Exception
{
    // inner.setScaleX() and setScaleY() zoom from the center
    // and not the top-left edge, requiring adjustments to
    // inner.setTranslateX() and ..Y() to compensate.
    // Using a separate Scale transformation does not have that problem.
    // See http://stackoverflow.com/questions/10707880/javafx-scale-and-translate-operation-results-in-anomaly
    inner = new Pane();
    inner.getTransforms().add(zoom = new Scale());

    scroll = new ScrollPane(inner);
    //  By default it seems that the minimum size is set to 36x36.
    //  This will make the border (if visible) not smaller that this minimum size
    //  even if the widget is actually smaller.
    scroll.setMinSize(1, 1);
    //  Removing 1px border around the ScrollPane's content. See https://stackoverflow.com/a/29376445
    scroll.getStyleClass().addAll("embedded_display", "edge-to-edge");
    // Panning tends to 'jerk' the content when clicked
    // scroll.setPannable(true);


    // If there are scrollbars, the scroll pane may react
    // to the mouse wheel and scroll the content.
    // Unfortunately it will also react to the mouse wheel
    // when there are no scrollbars and might end up with
    // the content moved out of the viewport.
    // --> Suppress scrolling unless we have scrollbars.
    scroll.addEventFilter(ScrollEvent.ANY, event ->
    {
        if (model_widget.propResize().getValue() != Resize.None)
            event.consume();
    });
    return scroll;
}
 

/**
 * Save to png.
 *
 * @param f
 *            the f
 */
public void saveToPng(File f) {
	String fName = f.getAbsolutePath();

	if (!fName.toLowerCase().endsWith(".png")) {
		fName += ".png";
	}

	int snWidth = 1024;
	int snHeight = 1024;

	double realWidth = getRoot().getBoundsInLocal().getWidth();
	double realHeight = getRoot().getBoundsInLocal().getHeight();

	double scaleX = snWidth / realWidth;
	double scaleY = snHeight / realHeight;

	double scale = Math.min(scaleX, scaleY);

	PerspectiveCamera snCam = new PerspectiveCamera(false);
	snCam.setTranslateZ(-200);

	SnapshotParameters snapshotParameters = new SnapshotParameters();
	snapshotParameters.setTransform(new Scale(scale, scale));
	snapshotParameters.setCamera(snCam);
	snapshotParameters.setDepthBuffer(true);
	snapshotParameters.setFill(Color.TRANSPARENT);

	WritableImage snapshot = new WritableImage(snWidth, (int) (realHeight * scale));

	getRoot().snapshot(snapshotParameters, snapshot);

	try {
		ImageIO.write(SwingFXUtils.fromFXImage(snapshot, null), "png", new File(fName));
	} catch (IOException ex) {
		ex.printStackTrace();
		Log.error(ex.getMessage());
	}
}
 

/**
 * Creates the {@link Pane} that is used to display nested content.
 *
 * @return The {@link Pane} that is used to display nested content.
 */
private Pane createNestedContentPane() {
	Pane nestedChildrenPaneScaled = new Pane();
	Scale scale = new Scale();
	nestedChildrenPaneScaled.getTransforms().add(scale);
	scale.setX(DEFAULT_NESTED_CHILDREN_ZOOM_FACTOR);
	scale.setY(DEFAULT_NESTED_CHILDREN_ZOOM_FACTOR);
	return nestedChildrenPaneScaled;
}
 

public JFXPopupSkin(JFXPopup control) {
        this.control = control;
        // set scale y to 0.01 instead of 0 to allow layout of the content,
        // otherwise it will cause exception in traverse engine, when focusing the 1st node
        scale = new Scale(1, 0.01, 0, 0);
        popupContent = control.getPopupContent();
        container.getStyleClass().add("jfx-popup-container");
        container.setBackground(new Background(new BackgroundFill(Color.WHITE, CornerRadii.EMPTY, Insets.EMPTY)));
        container.getChildren().add(popupContent);
        container.getTransforms().add(scale);
        container.setOpacity(0);
        root = JFXDepthManager.createMaterialNode(container, 4);
        animation = getAnimation();
}
 

/**
 * will retrieve icons from the glyphs map for a certain glyphName
 *
 * @param glyphName the glyph name
 * @return SVGGlyph node
 */
public static SVGGlyph getIcoMoonGlyph(String glyphName) throws Exception{
    SVGGlyphBuilder builder = glyphsMap.get(glyphName);
    if(builder == null) throw new Exception("Glyph '" + glyphName + "' not found!");
    SVGGlyph glyph = builder.build();
    // we need to apply transformation to correct the icon since
    // its being inverted after importing from icomoon
    glyph.getTransforms().add(new Scale(1, -1));
    Translate height = new Translate();
    height.yProperty().bind(Bindings.createDoubleBinding(() -> -glyph.getHeight(), glyph.heightProperty()));
    glyph.getTransforms().add(height);
    return glyph;
}
 

private void resizeMapControl() {
    double scale = Math.min(mapCanvasPane.getWidth() / mapControl.getSize(), mapCanvasPane.getHeight() / mapControl.getSize());

    double sw = mapControl.getSize() * scale;
    double dx = mapCanvasPane.getWidth() - sw;
    double dy = mapCanvasPane.getHeight() - sw;

    mapCanvasPane.getTransforms().clear();
    mapCanvasPane.getTransforms().add(new Scale(scale, scale));
    mapCanvasPane.getTransforms().add(new Translate(0.5 * dx / scale, 0.5 * dy / scale));
}
 

public MapControl() {
    mapImage = new Image(getClass().getResourceAsStream("/images/minimap_686.jpg"));

    double scale = getSize() / mapImage.getWidth();
    background = new ImageView(mapImage);
    background.getTransforms().add(new Scale(scale, scale));
    getChildren().add(background);

    icons = new Group();
    getChildren().add(icons);
}
 

@Override
protected void layoutChildren() {
    // calculate scale
    double scale = getWidth() / computePrefWidth(-1);
    getChildren().stream().filter(child -> child instanceof Region).forEach(child -> {
        Region region = (Region) child;
        if (region.getShape() != null) {
            region.resize(region.getShape().getLayoutBounds().getMaxX(),
                    region.getShape().getLayoutBounds().getMaxY());
            region.getTransforms().setAll(new Scale(scale, scale, 0, 0));
        } else {
            region.autosize();
        }
    });
}
 

/**
 * Initializes the menu bar.
 */
private void initializeMenuBar() {

    scaleTransform = new Scale(currentZoomFactor, currentZoomFactor, 0, 0);
    scaleTransform.yProperty().bind(scaleTransform.xProperty());

    graphEditor.getView().getTransforms().add(scaleTransform);

    final ToggleGroup skinGroup = new ToggleGroup();
    skinGroup.getToggles().addAll(defaultSkinButton, treeSkinButton, titledSkinButton);

    final ToggleGroup connectionStyleGroup = new ToggleGroup();
    connectionStyleGroup.getToggles().addAll(gappedStyleButton, detouredStyleButton);

    final ToggleGroup connectorTypeGroup = new ToggleGroup();
    connectorTypeGroup.getToggles().addAll(inputConnectorTypeButton, outputConnectorTypeButton);

    final ToggleGroup positionGroup = new ToggleGroup();
    positionGroup.getToggles().addAll(leftConnectorPositionButton, rightConnectorPositionButton);
    positionGroup.getToggles().addAll(topConnectorPositionButton, bottomConnectorPositionButton);

    graphEditor.getProperties().gridVisibleProperty().bind(showGridButton.selectedProperty());
    graphEditor.getProperties().snapToGridProperty().bind(snapToGridButton.selectedProperty());

    minimapButton.setGraphic(AwesomeIcon.MAP.node());

    initializeZoomOptions();

    final ListChangeListener<? super GNode> selectedNodesListener = change -> {
        checkConnectorButtonsToDisable();
    };

    graphEditor.getSelectionManager().getSelectedNodes().addListener(selectedNodesListener);
    checkConnectorButtonsToDisable();
}
 

public Axes(double scale) {
    axisX.getTransforms().addAll(new Rotate(90, Rotate.Z_AXIS), new Translate(0, 30, 0));
    axisX.setMaterial(new PhongMaterial(Color.RED));
    axisY.getTransforms().add(new Translate(0, 30, 0));
    axisY.setMaterial(new PhongMaterial(Color.GREEN));
    axisZ.setMaterial(new PhongMaterial(Color.BLUE));
    axisZ.getTransforms().addAll(new Rotate(90, Rotate.X_AXIS), new Translate(0, 30, 0));
    getChildren().addAll(axisX, axisY, axisZ);
    getTransforms().add(new Scale(scale, scale, scale));
}
 

private Group getThingsGroup(boolean infraredOn, boolean effectsOn) {
	Group things = new Group();
	things.getChildren().addAll(getNodesForThingsInOrder(infraredOn, effectsOn));

	if (VisualDebugger.DEBUG)
		things.getChildren().add(getVisualDebuggingSegments());

	things.getTransforms().add(new Translate(-viewport.getPositionEC().x, -viewport.getPositionEC().y));
	things.getTransforms().add(
		new Scale(viewport.getZoomLevel(), viewport.getZoomLevel(), viewport.getPositionEC().x, viewport.getPositionEC().y));

	return things;
}
 

public Node toNode(boolean infraredOn) {
	Node result = infraredOn ? infraredBackground : background;

	double minimumZoomLevelToSeeSpeckles = 0.20;
	if (viewport.getZoomLevel() <= minimumZoomLevelToSeeSpeckles)
		return null;

	result.getTransforms().clear();
	result.getTransforms().add(new Translate(-viewport.getPositionEC().x, -viewport.getPositionEC().y));
	result.getTransforms().add(
			new Scale(viewport.getZoomLevel(), viewport.getZoomLevel(), viewport.getPositionEC().x, viewport.getPositionEC().y));

	return result;
}
 

/**
 * @return A writable image that contains given views (not null).
 */
private @NotNull BufferedImage createRenderedImage() {
	final Group views = canvas.getViews();
	final Bounds bounds = views.getBoundsInParent();
	final double scale = 3d;
	final WritableImage img = new WritableImage((int) (bounds.getWidth() * scale), (int) (bounds.getHeight() * scale));
	final SnapshotParameters snapshotParameters = new SnapshotParameters();

	snapshotParameters.setFill(Color.WHITE);
	snapshotParameters.setTransform(new Scale(scale, scale));

	views.snapshot(snapshotParameters, img);
	return SwingFXUtils.fromFXImage(img, null);
}