Examples of org.vaadin.gwtgraphics.client.DrawingArea

org.vaadin.gwtgraphics.client.DrawingArea

The following example shows how a DrawingArea instance is created and added to a GWT application. A rectangle is added to this DrawingArea instance. When the user clicks this rectangle its color changes.

 DrawingArea canvas = new DrawingArea(200, 200); RootPanel.get().add(canvas); Rectangle rect = new Rectangle(10, 10, 100, 50); canvas.add(rect); rect.setFillColor("blue"); rect.addClickHandler(new ClickHandler() { public void onClick(ClickEvent event) { Rectangle rect = (Rectangle) event.getSource(); if (rect.getFillColor().equals("blue")) { rect.setFillColor("red"); } else { rect.setFillColor("blue"); } } });

@author Henri Kerola / IT Mill Ltd

    // Attach an HtmlContainer inside the clipping area (used for rendering layers):
    layerHtmlContainer = new HtmlGroup();
    add(layerHtmlContainer, 0, 0);


    // Attach a DrawingArea inside the clipping area (used for vector rendering):
    drawingArea = new DrawingArea(100, 100);
    add(drawingArea, 0, 0);


    // First child within the vector drawing area is a group for the map to render it's non-HTML layers:
    layerVectorContainer = new VectorGroup();
    drawingArea.add(layerVectorContainer);

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        final HorizontalPanel main = new HorizontalPanel();
        initWidget(main);
        main.setVerticalAlignment(HorizontalPanel.ALIGN_MIDDLE);
        setStylePrimaryName(CLASSNAME);


        canvas = new DrawingArea(graphWidth, graphHeight);
        canvas.setStylePrimaryName(CLASSNAME + "graph");
        main.add(canvas);


        path = new Path(0, 0);
        path.setStrokeColor(pathColor);

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        }
      }
    });
    setDragAppearance(DragAppearance.TARGET);


    AREA = new DrawingArea(getWidth(), getHeight());
    addChild(AREA);
  }

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  private Circle c1, c2, c3;
  private Ball b;
  private DrawingArea canvas2;


  public void onModuleLoad() {
    canvas2 = new DrawingArea(WIDTH, HEIGHT);
    lp.add(canvas2);


    setup();
    Timer t = new Timer() {

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    ball = new VirtualCircle(xCTR, yCTR, ballRadius);
    ball.setFillColor("red");


    ballFast = new FastCircle(xCTR, yCTR, ballRadius);


    gwtCanvas = new DrawingArea(WIDTH, HEIGHT);


    gwtCanvas.add(new Rectangle(0, 0, WIDTH, HEIGHT));


    gwtCanvas.add(c1);
    gwtCanvas.add(c2);

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