USHORTPaint.java

package ini.trakem2.display.paint;

import java.awt.Paint;
import java.awt.PaintContext;
import java.awt.Rectangle;
import java.awt.RenderingHints;
import java.awt.Transparency;
import java.awt.color.ColorSpace;
import java.awt.geom.AffineTransform;
import java.awt.geom.Rectangle2D;
import java.awt.image.ColorModel;
import java.awt.image.ComponentColorModel;
import java.awt.image.DataBuffer;

public final class USHORTPaint implements Paint
{
	private final short[] value;
	private final ComponentColorModel ccm = new ComponentColorModel(ColorSpace.getInstance(ColorSpace.CS_GRAY), new int[]{16}, false, false, Transparency.OPAQUE, DataBuffer.TYPE_USHORT);

	public USHORTPaint(final short value) {
		this.value = new short[]{value};
	}

	/** Will alter the value for this instance and for all {@link USHORTPaintContext} instances
	 * returned from {@link USHORTPaint#createContext(ColorModel, Rectangle, Rectangle2D, AffineTransform, RenderingHints)}. */
	public void setValue(final short value) {
		this.value[0] = value;
	}

	@Override
	public int getTransparency() {
		return Transparency.OPAQUE;
	}

	/** Return a new {@link USHORTPaintContext} that shares the value and ccm fields with this instance. */
	@Override
	public PaintContext createContext(
			ColorModel cm, Rectangle deviceBounds,
			Rectangle2D userBounds,
			AffineTransform xform,
			RenderingHints hints) {
		return new USHORTPaintContext(this.ccm, this.value);
	}

	public ComponentColorModel getComponentColorModel() {
		return this.ccm;
	}
}