arcdialframe.java

提供JFreechart图表功能, 提供JFreechart图表功能,提供JFreechart图表功能

     * 
     * @see #getOuterRadius()
     */
    public void setOuterRadius(double radius) {
        if (radius < 0.0) {
            throw new IllegalArgumentException("Negative 'radius' argument.");
        }
        this.outerRadius = radius;
        notifyListeners(new DialLayerChangeEvent(this));
    }
    
    /**
     * Returns the start angle.
     * 
     * @return The start angle.
     * 
     * @see #setStartAngle(double)
     */
    public double getStartAngle() {
        return this.startAngle;
    }
    
    /**
     * Sets the start angle and sends a {@link DialLayerChangeEvent} to 
     * all registered listeners.
     * 
     * @param angle  the angle.
     * 
     * @see #getStartAngle()
     */
    public void setStartAngle(double angle) {
        this.startAngle = angle;
        notifyListeners(new DialLayerChangeEvent(this));
    }
    
    /**
     * Returns the extent.
     * 
     * @return The extent.
     * 
     * @see #setExtent(double)
     */
    public double getExtent() {
        return this.extent;
    }
    
    /**
     * Sets the extent and sends a {@link DialLayerChangeEvent} to 
     * all registered listeners.
     * 
     * @param extent  the extent.
     * 
     * @see #getExtent()
     */
    public void setExtent(double extent) {
        this.extent = extent;
        notifyListeners(new DialLayerChangeEvent(this));
    }
    
    /**
     * Returns the shape for the window for this dial.  Some dial layers will
     * request that their drawing be clipped within this window.
     *
     * @param frame  the reference frame (<code>null</code> not permitted).
     *
     * @return The shape of the dial's window.
     */
    public Shape getWindow(Rectangle2D frame) {
        
        Rectangle2D innerFrame = DialPlot.rectangleByRadius(frame, 
                this.innerRadius, this.innerRadius);
        Rectangle2D outerFrame = DialPlot.rectangleByRadius(frame, 
                this.outerRadius, this.outerRadius);
        Arc2D inner = new Arc2D.Double(innerFrame, this.startAngle, 
                this.extent, Arc2D.OPEN);
        Arc2D outer = new Arc2D.Double(outerFrame, this.startAngle 
                + this.extent, -this.extent, Arc2D.OPEN);
        GeneralPath p = new GeneralPath();
        Point2D point1 = inner.getStartPoint();
        p.moveTo((float) point1.getX(), (float) point1.getY());
        p.append(inner, true);
        p.append(outer, true);
        p.closePath();
        return p;
        
    }
    
    /**
     * Returns the outer window.
     * 
     * @param frame  the frame.
     * 
     * @return The outer window.
     */
    protected Shape getOuterWindow(Rectangle2D frame) {
        double radiusMargin = 0.02;
        double angleMargin = 1.5;
        Rectangle2D innerFrame = DialPlot.rectangleByRadius(frame, 
                this.innerRadius - radiusMargin, this.innerRadius 
                - radiusMargin);
        Rectangle2D outerFrame = DialPlot.rectangleByRadius(frame, 
                this.outerRadius + radiusMargin, this.outerRadius 
                + radiusMargin);
        Arc2D inner = new Arc2D.Double(innerFrame, this.startAngle 
                - angleMargin, this.extent + 2 * angleMargin, Arc2D.OPEN);
        Arc2D outer = new Arc2D.Double(outerFrame, this.startAngle 
                + angleMargin + this.extent, -this.extent - 2 * angleMargin, 
                Arc2D.OPEN);
        GeneralPath p = new GeneralPath();
        Point2D point1 = inner.getStartPoint();
        p.moveTo((float) point1.getX(), (float) point1.getY());
        p.append(inner, true);
        p.append(outer, true);
        p.closePath();
        return p;
    }
    
    /**
     * Draws the frame.
     * 
     * @param g2  the graphics target.
     * @param plot  the plot.
     * @param frame  the dial's reference frame.
     * @param view  the dial's view rectangle.
     */
    public void draw(Graphics2D g2, DialPlot plot, Rectangle2D frame, 
            Rectangle2D view) {
        
        Shape window = getWindow(frame);
        Shape outerWindow = getOuterWindow(frame);

        Area area1 = new Area(outerWindow);
        Area area2 = new Area(window);
        area1.subtract(area2);
        g2.setPaint(Color.lightGray);
        g2.fill(area1);
        
        g2.setStroke(this.stroke);
        g2.setPaint(this.foregroundPaint);
        g2.draw(window);
        g2.draw(outerWindow);
        
        
    }

    /**
     * Returns <code>false</code> to indicate that this dial layer is not
     * clipped to the dial window.
     *
     * @return <code>false</code>.
     */
    public boolean isClippedToWindow() {
        return false;
    }
    
    /**
     * Tests this instance for equality with an arbitrary object.
     * 
     * @param obj  the object (<code>null</code> permitted).
     * 
     * @return A boolean.
     */
    public boolean equals(Object obj) {
        if (obj == this) {
            return true;
        }
        if (!(obj instanceof ArcDialFrame)) {
            return false;
        }
        ArcDialFrame that = (ArcDialFrame) obj;
        if (!PaintUtilities.equal(this.backgroundPaint, that.backgroundPaint)) {
            return false;
        }
        if (!PaintUtilities.equal(this.foregroundPaint, that.foregroundPaint)) {
            return false;
        }
        if (this.startAngle != that.startAngle) {
            return false;
        }
        if (this.extent != that.extent) {
            return false;
        }
        if (this.innerRadius != that.innerRadius) {
            return false;
        }
        if (this.outerRadius != that.outerRadius) {
            return false;
        }
        if (!this.stroke.equals(that.stroke)) {
            return false;
        }
        return super.equals(obj);
    }
    
    /**
     * Returns a hash code for this instance.
     * 
     * @return The hash code.
     */
    public int hashCode() {
        int result = 193;
        long temp = Double.doubleToLongBits(this.startAngle);
        result = 37 * result + (int) (temp ^ (temp >>> 32));
        temp = Double.doubleToLongBits(this.extent);
        result = 37 * result + (int) (temp ^ (temp >>> 32));
        temp = Double.doubleToLongBits(this.innerRadius);
        result = 37 * result + (int) (temp ^ (temp >>> 32));
        temp = Double.doubleToLongBits(this.outerRadius);
        result = 37 * result + (int) (temp ^ (temp >>> 32));
        result = 37 * result + HashUtilities.hashCodeForPaint(
                this.backgroundPaint);
        result = 37 * result + HashUtilities.hashCodeForPaint(
                this.foregroundPaint);
        result = 37 * result + this.stroke.hashCode();
        return result;
    }
    
    /**
     * Returns a clone of this instance.
     * 
     * @return A clone.
     * 
     * @throws CloneNotSupportedException if any attribute of this instance
     *     cannot be cloned.
     */
    public Object clone() throws CloneNotSupportedException {
        return super.clone();
    }
    
    /**
     * Provides serialization support.
     *
     * @param stream  the output stream.
     *
     * @throws IOException  if there is an I/O error.
     */
    private void writeObject(ObjectOutputStream stream) throws IOException {
        stream.defaultWriteObject();
        SerialUtilities.writePaint(this.backgroundPaint, stream);
        SerialUtilities.writePaint(this.foregroundPaint, stream);
        SerialUtilities.writeStroke(this.stroke, stream);
    }

    /**
     * Provides serialization support.
     *
     * @param stream  the input stream.
     *
     * @throws IOException  if there is an I/O error.
     * @throws ClassNotFoundException  if there is a classpath problem.
     */
    private void readObject(ObjectInputStream stream) 
            throws IOException, ClassNotFoundException {
        stream.defaultReadObject();
        this.backgroundPaint = SerialUtilities.readPaint(stream);
        this.foregroundPaint = SerialUtilities.readPaint(stream);
        this.stroke = SerialUtilities.readStroke(stream);
    }
    
}