Example usage for org.jfree.chart.block BlockContainer getBlocks

Introduction

In this page you can find the example usage for org.jfree.chart.block BlockContainer getBlocks.

Prototype

public List getBlocks() 

Source Link

Document

Returns an unmodifiable list of the Block objects managed by this arrangement.

Usage

From source file:com.hmsinc.epicenter.webapp.chart.SNColumnArrangement.java

/**
 * Calculates and sets the bounds of all the items in the specified
 * container, subject to the given constraint. The <code>Graphics2D</code>
 * can be used by some items (particularly items containing text) to
 * calculate sizing parameters./*from   w  ww  .ja  v  a2s  .c o  m*/
 * 
 * @param container
 *            the container whose items are being arranged.
 * @param g2
 *            the graphics device.
 * @param constraint
 *            the size constraint.
 * 
 * @return The size of the container after arrangement of the contents.
 */
@SuppressWarnings("unchecked")
public Size2D arrange(BlockContainer container, Graphics2D g2, RectangleConstraint constraint) {
    List<Block> blocks = container.getBlocks();

    // calculate max width of entries
    double maxWidth = 0.0;
    double maxHeight = 0.0;
    for (Block block : blocks) {
        Size2D size = block.arrange(g2, RectangleConstraint.NONE);
        maxWidth = Math.max(maxWidth, size.width + this.horizontalGap);
        maxHeight = Math.max(maxHeight, size.height + this.verticalGap);
    }

    // calculate number of columns
    double width = 0.0;
    if (constraint.getWidthConstraintType() == LengthConstraintType.FIXED) {
        width = constraint.getWidth();
    } else if (constraint.getWidthConstraintType() == LengthConstraintType.RANGE) {
        Range range = constraint.getWidthRange();
        width = range.getUpperBound();
    } else {
        throw new RuntimeException("Not implemented.");
    }

    int columns = (int) (Math.floor(width / maxWidth));
    if (columns > 0) {
        columns--;
    }

    // for all columns
    int colx = -1;
    int coly = 0;
    for (Block block : blocks) {
        Size2D size = block.arrange(g2, RectangleConstraint.NONE);
        if (colx < columns) {
            colx++;
        } else {
            colx = 0;
            coly++;
        }
        double x = colx * maxWidth;
        double y = coly * maxHeight;
        block.setBounds(new Rectangle2D.Double(x, y, size.width, size.height));
    }

    // calculate size of bounding
    double bWidth = (coly == 0) ? (colx + 1) * maxWidth : (columns + 1) * maxWidth;
    double bHeight = (coly + 1) * maxHeight;
    return new Size2D(bWidth, bHeight);
}

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