gridarrangement.java

jfreechart-1.0.12.zip 可以用来作图

        }
    }

    /**
     * Arrange with a fixed height and a width within a given range.
     *
     * @param container  the container.
     * @param constraint  the constraint.
     * @param g2  the graphics device.
     *
     * @return The size of the arrangement.
     */
    protected Size2D arrangeRF(BlockContainer container, Graphics2D g2,
                               RectangleConstraint constraint) {

        RectangleConstraint c1 = constraint.toUnconstrainedWidth();
        Size2D size1 = arrange(container, g2, c1);

        if (constraint.getWidthRange().contains(size1.getWidth())) {
            return size1;
        }
        else {
            double w = constraint.getWidthRange().constrain(size1.getWidth());
            RectangleConstraint c2 = constraint.toFixedWidth(w);
            return arrange(container, g2, c2);
        }
    }

    /**
     * Arrange with a fixed width and no height constraint.
     *
     * @param container  the container.
     * @param constraint  the constraint.
     * @param g2  the graphics device.
     *
     * @return The size of the arrangement.
     */
    protected Size2D arrangeRN(BlockContainer container, Graphics2D g2,
                               RectangleConstraint constraint) {

        RectangleConstraint c1 = constraint.toUnconstrainedWidth();
        Size2D size1 = arrange(container, g2, c1);

        if (constraint.getWidthRange().contains(size1.getWidth())) {
            return size1;
        }
        else {
            double w = constraint.getWidthRange().constrain(size1.getWidth());
            RectangleConstraint c2 = constraint.toFixedWidth(w);
            return arrange(container, g2, c2);
        }
    }

    /**
     * Arrange with a fixed height and no width constraint.
     *
     * @param container  the container.
     * @param constraint  the constraint.
     * @param g2  the graphics device.
     *
     * @return The size of the arrangement.
     */
    protected Size2D arrangeNR(BlockContainer container, Graphics2D g2,
                               RectangleConstraint constraint) {

        RectangleConstraint c1 = constraint.toUnconstrainedHeight();
        Size2D size1 = arrange(container, g2, c1);

        if (constraint.getHeightRange().contains(size1.getHeight())) {
            return size1;
        }
        else {
            double h = constraint.getHeightRange().constrain(size1.getHeight());
            RectangleConstraint c2 = constraint.toFixedHeight(h);
            return arrange(container, g2, c2);
        }
    }

    /**
     * Arrange with ranges for both the width and height constraints.
     *
     * @param container  the container.
     * @param constraint  the constraint.
     * @param g2  the graphics device.
     *
     * @return The size of the arrangement.
     */
    protected Size2D arrangeRR(BlockContainer container, Graphics2D g2,
                               RectangleConstraint constraint) {

        Size2D size1 = arrange(container, g2, RectangleConstraint.NONE);

        if (constraint.getWidthRange().contains(size1.getWidth())) {
            if (constraint.getHeightRange().contains(size1.getHeight())) {
                return size1;
            }
            else {
                // width is OK, but height must be constrained
                double h = constraint.getHeightRange().constrain(
                        size1.getHeight());
                RectangleConstraint cc = new RectangleConstraint(
                        size1.getWidth(), h);
                return arrangeFF(container, g2, cc);
            }
        }
        else {
            if (constraint.getHeightRange().contains(size1.getHeight())) {
                // height is OK, but width must be constrained
                double w = constraint.getWidthRange().constrain(
                        size1.getWidth());
                RectangleConstraint cc = new RectangleConstraint(w,
                        size1.getHeight());
                return arrangeFF(container, g2, cc);

            }
            else {
                double w = constraint.getWidthRange().constrain(
                        size1.getWidth());
                double h = constraint.getHeightRange().constrain(
                        size1.getHeight());
                RectangleConstraint cc = new RectangleConstraint(w, h);
                return arrangeFF(container, g2, cc);
            }
        }
    }

    /**
     * Arrange with a fixed width and a height within a given range.
     *
     * @param container  the container.
     * @param g2  the graphics device.
     * @param constraint  the constraint.
     *
     * @return The size of the arrangement.
     */
    protected Size2D arrangeFN(BlockContainer container, Graphics2D g2,
                               RectangleConstraint constraint) {

        double width = constraint.getWidth() / this.columns;
        RectangleConstraint bc = constraint.toFixedWidth(width);
        List blocks = container.getBlocks();
        double maxH = 0.0;
        for (int r = 0; r < this.rows; r++) {
            for (int c = 0; c < this.columns; c++) {
                int index = r * this.columns + c;
                if (index >= blocks.size()) {
                    break;
                }
                Block b = (Block) blocks.get(index);
                if (b != null) {
                    Size2D s = b.arrange(g2, bc);
                    maxH = Math.max(maxH, s.getHeight());
                }
            }
        }
        RectangleConstraint cc = constraint.toFixedHeight(maxH * this.rows);
        return arrange(container, g2, cc);
    }

    /**
     * Arrange with a fixed height and no constraint for the width.
     *
     * @param container  the container.
     * @param g2  the graphics device.
     * @param constraint  the constraint.
     *
     * @return The size of the arrangement.
     */
    protected Size2D arrangeNF(BlockContainer container, Graphics2D g2,
                               RectangleConstraint constraint) {

        double height = constraint.getHeight() / this.rows;
        RectangleConstraint bc = constraint.toFixedHeight(height);
        List blocks = container.getBlocks();
        double maxW = 0.0;
        for (int r = 0; r < this.rows; r++) {
            for (int c = 0; c < this.columns; c++) {
                int index = r * this.columns + c;
                if (index >= blocks.size()) {
                    break;
                }
                Block b = (Block) blocks.get(index);
                if (b != null) {
                    Size2D s = b.arrange(g2, bc);
                    maxW = Math.max(maxW, s.getWidth());
                }
            }
        }
        RectangleConstraint cc = constraint.toFixedWidth(maxW * this.columns);
        return arrange(container, g2, cc);
    }

    /**
     * Clears any cached layout information retained by the arrangement.
     */
    public void clear() {
        // nothing to clear
    }

    /**
     * Compares this layout manager for equality with an arbitrary object.
     *
     * @param obj  the object.
     *
     * @return A boolean.
     */
    public boolean equals(Object obj) {
        if (obj == this) {
            return true;
        }
        if (!(obj instanceof GridArrangement)) {
            return false;
        }
        GridArrangement that = (GridArrangement) obj;
        if (this.columns != that.columns) {
            return false;
        }
        if (this.rows != that.rows) {
            return false;
        }
        return true;
    }

}