borderarrangement.java

jfreechart-1.0.12.zip 可以用来作图

     *
     * @param container  the container.
     * @param g2  the graphics device.
     * @param width  the fixed width.
     *
     * @return The container size after arranging the contents.
     */
    protected Size2D arrangeFN(BlockContainer container, Graphics2D g2,
                               double width) {
        double[] w = new double[5];
        double[] h = new double[5];
        RectangleConstraint c1 = new RectangleConstraint(width, null,
                LengthConstraintType.FIXED, 0.0, null,
                LengthConstraintType.NONE);
        if (this.topBlock != null) {
            Size2D size = this.topBlock.arrange(g2, c1);
            w[0] = size.width;
            h[0] = size.height;
        }
        if (this.bottomBlock != null) {
            Size2D size = this.bottomBlock.arrange(g2, c1);
            w[1] = size.width;
            h[1] = size.height;
        }
        RectangleConstraint c2 = new RectangleConstraint(0.0,
                new Range(0.0, width), LengthConstraintType.RANGE,
                0.0, null, LengthConstraintType.NONE);
        if (this.leftBlock != null) {
            Size2D size = this.leftBlock.arrange(g2, c2);
            w[2] = size.width;
            h[2] = size.height;
        }
        if (this.rightBlock != null) {
            double maxW = Math.max(width - w[2], 0.0);
            RectangleConstraint c3 = new RectangleConstraint(0.0,
                    new Range(Math.min(w[2], maxW), maxW),
                    LengthConstraintType.RANGE, 0.0, null,
                    LengthConstraintType.NONE);
            Size2D size = this.rightBlock.arrange(g2, c3);
            w[3] = size.width;
            h[3] = size.height;
        }

        h[2] = Math.max(h[2], h[3]);
        h[3] = h[2];

        if (this.centerBlock != null) {
            RectangleConstraint c4 = new RectangleConstraint(width - w[2]
                    - w[3], null, LengthConstraintType.FIXED, 0.0, null,
                    LengthConstraintType.NONE);
            Size2D size = this.centerBlock.arrange(g2, c4);
            w[4] = size.width;
            h[4] = size.height;
        }
        double height = h[0] + h[1] + Math.max(h[2], Math.max(h[3], h[4]));
        return arrange(container, g2, new RectangleConstraint(width, height));
    }

    /**
     * Performs an arrangement with range constraints on both the vertical
     * and horizontal sides.
     *
     * @param container  the container.
     * @param widthRange  the allowable range for the container width.
     * @param heightRange  the allowable range for the container height.
     * @param g2  the graphics device.
     *
     * @return The container size.
     */
    protected Size2D arrangeRR(BlockContainer container,
                               Range widthRange, Range heightRange,
                               Graphics2D g2) {
        double[] w = new double[5];
        double[] h = new double[5];
        if (this.topBlock != null) {
            RectangleConstraint c1 = new RectangleConstraint(widthRange,
                    heightRange);
            Size2D size = this.topBlock.arrange(g2, c1);
            w[0] = size.width;
            h[0] = size.height;
        }
        if (this.bottomBlock != null) {
            Range heightRange2 = Range.shift(heightRange, -h[0], false);
            RectangleConstraint c2 = new RectangleConstraint(widthRange,
                    heightRange2);
            Size2D size = this.bottomBlock.arrange(g2, c2);
            w[1] = size.width;
            h[1] = size.height;
        }
        Range heightRange3 = Range.shift(heightRange, -(h[0] + h[1]));
        if (this.leftBlock != null) {
            RectangleConstraint c3 = new RectangleConstraint(widthRange,
                    heightRange3);
            Size2D size = this.leftBlock.arrange(g2, c3);
            w[2] = size.width;
            h[2] = size.height;
        }
        Range widthRange2 = Range.shift(widthRange, -w[2], false);
        if (this.rightBlock != null) {
            RectangleConstraint c4 = new RectangleConstraint(widthRange2,
                    heightRange3);
            Size2D size = this.rightBlock.arrange(g2, c4);
            w[3] = size.width;
            h[3] = size.height;
        }

        h[2] = Math.max(h[2], h[3]);
        h[3] = h[2];
        Range widthRange3 = Range.shift(widthRange, -(w[2] + w[3]), false);
        if (this.centerBlock != null) {
            RectangleConstraint c5 = new RectangleConstraint(widthRange3,
                    heightRange3);
            Size2D size = this.centerBlock.arrange(g2, c5);
            w[4] = size.width;
            h[4] = size.height;
        }
        double width = Math.max(w[0], Math.max(w[1], w[2] + w[4] + w[3]));
        double height = h[0] + h[1] + Math.max(h[2], Math.max(h[3], h[4]));
        if (this.topBlock != null) {
            this.topBlock.setBounds(new Rectangle2D.Double(0.0, 0.0, width,
                    h[0]));
        }
        if (this.bottomBlock != null) {
            this.bottomBlock.setBounds(new Rectangle2D.Double(0.0,
                    height - h[1], width, h[1]));
        }
        if (this.leftBlock != null) {
            this.leftBlock.setBounds(new Rectangle2D.Double(0.0, h[0], w[2],
                    h[2]));
        }
        if (this.rightBlock != null) {
            this.rightBlock.setBounds(new Rectangle2D.Double(width - w[3],
                    h[0], w[3], h[3]));
        }

        if (this.centerBlock != null) {
            this.centerBlock.setBounds(new Rectangle2D.Double(w[2], h[0],
                    width - w[2] - w[3], height - h[0] - h[1]));
        }
        return new Size2D(width, height);
    }

    /**
     * Arranges the items within a container.
     *
     * @param container  the container.
     * @param constraint  the constraint.
     * @param g2  the graphics device.
     *
     * @return The container size after the arrangement.
     */
    protected Size2D arrangeFF(BlockContainer container, Graphics2D g2,
                               RectangleConstraint constraint) {
        double[] w = new double[5];
        double[] h = new double[5];
        w[0] = constraint.getWidth();
        if (this.topBlock != null) {
            RectangleConstraint c1 = new RectangleConstraint(w[0], null,
                    LengthConstraintType.FIXED, 0.0,
                    new Range(0.0, constraint.getHeight()),
                    LengthConstraintType.RANGE);
            Size2D size = this.topBlock.arrange(g2, c1);
            h[0] = size.height;
        }
        w[1] = w[0];
        if (this.bottomBlock != null) {
            RectangleConstraint c2 = new RectangleConstraint(w[0], null,
                    LengthConstraintType.FIXED, 0.0, new Range(0.0,
                    constraint.getHeight() - h[0]), LengthConstraintType.RANGE);
            Size2D size = this.bottomBlock.arrange(g2, c2);
            h[1] = size.height;
        }
        h[2] = constraint.getHeight() - h[1] - h[0];
        if (this.leftBlock != null) {
            RectangleConstraint c3 = new RectangleConstraint(0.0,
                    new Range(0.0, constraint.getWidth()),
                    LengthConstraintType.RANGE, h[2], null,
                    LengthConstraintType.FIXED);
            Size2D size = this.leftBlock.arrange(g2, c3);
            w[2] = size.width;
        }
        h[3] = h[2];
        if (this.rightBlock != null) {
            RectangleConstraint c4 = new RectangleConstraint(0.0,
                    new Range(0.0, Math.max(constraint.getWidth() - w[2], 0.0)),
                    LengthConstraintType.RANGE, h[2], null,
                    LengthConstraintType.FIXED);
            Size2D size = this.rightBlock.arrange(g2, c4);
            w[3] = size.width;
        }
        h[4] = h[2];
        w[4] = constraint.getWidth() - w[3] - w[2];
        RectangleConstraint c5 = new RectangleConstraint(w[4], h[4]);
        if (this.centerBlock != null) {
            this.centerBlock.arrange(g2, c5);
        }

        if (this.topBlock != null) {
            this.topBlock.setBounds(new Rectangle2D.Double(0.0, 0.0, w[0],
                    h[0]));
        }
        if (this.bottomBlock != null) {
            this.bottomBlock.setBounds(new Rectangle2D.Double(0.0, h[0] + h[2],
                    w[1], h[1]));
        }
        if (this.leftBlock != null) {
            this.leftBlock.setBounds(new Rectangle2D.Double(0.0, h[0], w[2],
                    h[2]));
        }
        if (this.rightBlock != null) {
            this.rightBlock.setBounds(new Rectangle2D.Double(w[2] + w[4], h[0],
                    w[3], h[3]));
        }
        if (this.centerBlock != null) {
            this.centerBlock.setBounds(new Rectangle2D.Double(w[2], h[0], w[4],
                    h[4]));
        }
        return new Size2D(constraint.getWidth(), constraint.getHeight());
    }

    /**
     * Clears the layout.
     */
    public void clear() {
        this.centerBlock = null;
        this.topBlock = null;
        this.bottomBlock = null;
        this.leftBlock = null;
        this.rightBlock = null;
    }

    /**
     * Tests this arrangement 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 BorderArrangement)) {
            return false;
        }
        BorderArrangement that = (BorderArrangement) obj;
        if (!ObjectUtilities.equal(this.topBlock, that.topBlock)) {
            return false;
        }
        if (!ObjectUtilities.equal(this.bottomBlock, that.bottomBlock)) {
            return false;
        }
        if (!ObjectUtilities.equal(this.leftBlock, that.leftBlock)) {
            return false;
        }
        if (!ObjectUtilities.equal(this.rightBlock, that.rightBlock)) {
            return false;
        }
        if (!ObjectUtilities.equal(this.centerBlock, that.centerBlock)) {
            return false;
        }
        return true;
    }
}