Examples of JCanvas

diva.canvas.JCanvas
The JCanvas class is the center-piece of this package. The canvas is composed of a canvas pane, which in turn is composed of one or more layers. Each layer may contain arbitrary graphics, although commonly at least one layer is an instance of a "figure layer" class that contains figure objects. The main role of the JCanvas class is to provide the physical screen space on which layers draw themselves, and to interface to the Swing component hierarchy.
This architecture allows a graphics developer to write code for a pane and a set of layers, without being concerned about whether the pane and its layers will be directly contained by a JCanvas or within some other layer. For example, it will be possible for a visualization component to be "embedded" in a larger component. @version $Id: JCanvas.java,v 1.27 2005/07/08 19:54:46 cxh Exp $ @author John Reekie @Pt.AcceptedRating Yellow

Examples of diva.canvas.JCanvas

    Interactor defaultInteractor;


    /** Create a JCanvas and put it into a window
     */
    public IconTutorial() {
        canvas = new JCanvas();
        graphicsPane = (GraphicsPane) canvas.getCanvasPane();


        // Create a controller to do the work.
        controller = new BasicController(graphicsPane);
        defaultInteractor = controller.getSelectionInteractor();

View Full Code Here

Examples of diva.canvas.JCanvas

        return _target;
    }


    public void paintComponent(Graphics g) {
        if (_target != null) {
            JCanvas canvas = null;
            try {
                canvas = (JCanvas) _target.getView();
            } catch (ClassCastException ex) {
                throw new RuntimeException("Failed to cast "
                        + _target.getView() + " to JCanvas.", ex);
            }
            Dimension viewSize = canvas.getSize();
            Rectangle viewRect = new Rectangle(0, 0, viewSize.width,
                    viewSize.height);


            Rectangle myRect = _getInsetBounds();


            AffineTransform forward = CanvasUtilities.computeFitTransform(
                    viewRect, myRect);


            // Also invert the current transform on the canvas.
            AffineTransform current = canvas.getCanvasPane()
                    .getTransformContext().getTransform();
            AffineTransform inverse;


            try {
                inverse = forward.createInverse();
                inverse.concatenate(current.createInverse());
            } catch (NoninvertibleTransformException e) {
                throw new RuntimeException(e.toString());
            }


            Graphics2D g2d = (Graphics2D) g;
            g2d.transform(forward);
            canvas.paint(g);


            g.setColor(Color.red);


            Rectangle r = _target.getViewRect();
            g.drawRect(r.x, r.y, r.width, r.height);

View Full Code Here

Examples of diva.canvas.JCanvas

                scale = 0.0;
            }


            scale = Math.pow(1.3, scale);


            JCanvas canvas = (JCanvas) _target.getView();


            AffineTransform current = canvas.getCanvasPane()
                    .getTransformContext().getTransform();
            current.setTransform(transformOrigin);
            current.translate(scaled.getX(), scaled.getY());
            current.scale(scale, scale);
            current.translate(-scaled.getX(), -scaled.getY());
            canvas.getCanvasPane().setTransform(current);
        }

View Full Code Here

Examples of diva.canvas.JCanvas

            if ((_target != null)
                    && ((evt.getModifiers() & InputEvent.BUTTON3_MASK) != 0)) {
                setPosition(evt.getX(), evt.getY());
                origin = evt.getPoint();


                JCanvas canvas = ((JCanvas) _target.getView());
                TransformContext context = canvas.getCanvasPane()
                        .getTransformContext();


                // clone the transform that is in the context, so we can
                // avoid a lot of repeated scaling of the same transform.
                transformOrigin = (AffineTransform) context.getTransform()

View Full Code Here

Examples of diva.canvas.JCanvas

        return _target;
    }


    public void paintComponent(Graphics g) {
        if (_target != null) {
            JCanvas canvas = _target;
            Rectangle2D viewRect = getViewSize();


            //  System.out.println("viewRect = " + viewRect);
            Rectangle myRect = _getInsetBounds();


            AffineTransform forward = CanvasUtilities.computeFitTransform(
                    viewRect, myRect);


            // Also invert the current transform on the canvas.
            AffineTransform current = canvas.getCanvasPane()
                    .getTransformContext().getTransform();


            AffineTransform inverse;


            try {
                forward.concatenate(current.createInverse());
                inverse = forward.createInverse();
            } catch (NoninvertibleTransformException e) {
                throw new RuntimeException(e.toString());
            }


            Graphics2D g2d = (Graphics2D) g;
            g2d.transform(forward);
            canvas.paint(g);
            g2d.transform(inverse);


            // Draw the Rectangles in untransformed coordinates, since we
            // always want them to show up 1 pixel wide.
            Dimension size = _target.getSize();

View Full Code Here

Examples of diva.canvas.JCanvas

                public void run() {
                    try {
                        JFrame f = new JFrame();


                        SimplePane rootPane = new SimplePane();
                        JCanvas canvas = new JCanvas(rootPane);
                        canvas.setSize(200, 200);


                        JCanvasPanner pan = new JCanvasPanner(canvas);
                        pan.setSize(50, 50);
                        pan.setPreferredSize(new Dimension(50, 50));
                        f.getContentPane().setLayout(new GridLayout(2, 1));

View Full Code Here

0 1 2

TOP

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.