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package com.mxgraph.shape;

import java.awt.Polygon;
import java.awt.Shape;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Line2D;
import java.util.Hashtable;
import java.util.Map;

import org.yaoqiang.graph.util.Constants;

import com.mxgraph.canvas.mxGraphics2DCanvas;
import com.mxgraph.util.mxConstants;
import com.mxgraph.util.mxPoint;
import com.mxgraph.util.mxUtils;
import com.mxgraph.view.mxCellState;

public class mxMarkerRegistry {
	/**
	 * 
	 */
	protected static Map markers = new Hashtable();

	static {

		registerMarker(mxConstants.ARROW_CLASSIC, new mxIMarker() {
			public mxPoint paintMarker(mxGraphics2DCanvas canvas, mxCellState state, String type, mxPoint pe, double nx, double ny, double size, boolean source) {
				Polygon poly = new Polygon();
				poly.addPoint((int) Math.round(pe.getX()), (int) Math.round(pe.getY()));
				poly.addPoint((int) Math.round(pe.getX() - nx - ny / 2), (int) Math.round(pe.getY() - ny + nx / 2));

				poly.addPoint((int) Math.round(pe.getX() - nx * 3 / 4), (int) Math.round(pe.getY() - ny * 3 / 4));

				poly.addPoint((int) Math.round(pe.getX() + ny / 2 - nx), (int) Math.round(pe.getY() - ny - nx / 2));

				if (mxUtils.isTrue(state.getStyle(), (source) ? "startFill" : "endFill", true)) {
					canvas.fillShape(poly);
				}
				canvas.getGraphics().draw(poly);

				return new mxPoint(-nx, -ny);
			}
		});

		mxMarkerRegistry.registerMarker(Constants.ARROW_STYLE_OPEN_BLOCK, new mxIMarker() {
			public mxPoint paintMarker(mxGraphics2DCanvas canvas, mxCellState state, String type, mxPoint pe, double nx, double ny, double size, boolean source) {
				Polygon poly = new Polygon();
				poly.addPoint((int) Math.round(pe.getX()), (int) Math.round(pe.getY()));
				poly.addPoint((int) Math.round(pe.getX() - nx - ny / 2), (int) Math.round(pe.getY() - ny + nx / 2));
				poly.addPoint((int) Math.round(pe.getX() + ny / 2 - nx), (int) Math.round(pe.getY() - ny - nx / 2));

				canvas.getGraphics().draw(poly);

				return new mxPoint(-nx, -ny);
			}
		});

		mxMarkerRegistry.registerMarker(mxConstants.ARROW_OPEN, new mxIMarker() {
			public mxPoint paintMarker(mxGraphics2DCanvas canvas, mxCellState state, String type, mxPoint pe, double nx, double ny, double size, boolean source) {
				canvas.getGraphics().draw(
						new Line2D.Float((int) Math.round(pe.getX() - nx - ny / 2), (int) Math.round(pe.getY() - ny + nx / 2), (int) Math.round(pe.getX() - nx
								/ 6), (int) Math.round(pe.getY() - ny / 6)));
				canvas.getGraphics().draw(
						new Line2D.Float((int) Math.round(pe.getX() - nx / 6), (int) Math.round(pe.getY() - ny / 6), (int) Math.round(pe.getX() + ny / 2 - nx),
								(int) Math.round(pe.getY() - ny - nx / 2)));

				return new mxPoint(-nx / 2, -ny / 2);
			}
		});

		mxMarkerRegistry.registerMarker(Constants.ARROW_STYLE_OPEN_OVAL, new mxIMarker() {
			public mxPoint paintMarker(mxGraphics2DCanvas canvas, mxCellState state, String type, mxPoint pe, double nx, double ny, double size, boolean source) {
				double cx = pe.getX() - nx / 2;
				double cy = pe.getY() - ny / 2;
				double a = size / 2;
				Shape shape = new Ellipse2D.Double(cx - a, cy - a, size * 1.2, size * 1.2);

				canvas.getGraphics().draw(shape);

				return new mxPoint(-nx, -ny);
			}
		});

		mxMarkerRegistry.registerMarker(Constants.ARROW_STYLE_OPEN_DIAMOND, new mxIMarker() {
			public mxPoint paintMarker(mxGraphics2DCanvas canvas, mxCellState state, String type, mxPoint pe, double nx, double ny, double size, boolean source) {
				nx *= 1.8;
				ny *= 1.8;
				int d = (int) (8 * canvas.getScale());
				if (nx > 0 || ny > 0) {
					d = (int) (-8 * canvas.getScale());
				}
				Polygon poly = new Polygon();
				if (ny == 0) {
					poly.addPoint((int) Math.round(pe.getX() + nx / 2 - d), (int) Math.round(pe.getY()));
					poly.addPoint((int) Math.round(pe.getX() - d), (int) Math.round(pe.getY() + nx / 3));
					poly.addPoint((int) Math.round(pe.getX() - nx / 2 - d), (int) Math.round(pe.getY()));
					poly.addPoint((int) Math.round(pe.getX() - d), (int) Math.round(pe.getY() - nx / 3));
				} else {
					poly.addPoint((int) Math.round(pe.getX() + ny / 3), (int) Math.round(pe.getY()) - d);
					poly.addPoint((int) Math.round(pe.getX()), (int) Math.round(pe.getY() + ny / 2) - d);
					poly.addPoint((int) Math.round(pe.getX() - ny / 3), (int) Math.round(pe.getY()) - d);
					poly.addPoint((int) Math.round(pe.getX()), (int) Math.round(pe.getY() - ny / 2) - d);
				}

				canvas.getGraphics().draw(poly);

				return new mxPoint(0, 0);
			}
		});

		mxMarkerRegistry.registerMarker(Constants.ARROW_STYLE_SLASH, new mxIMarker() {
			public mxPoint paintMarker(mxGraphics2DCanvas canvas, mxCellState state, String type, mxPoint pe, double nx, double ny, double size, boolean source) {
				nx *= 1.8;
				ny *= 1.8;
				int d = (int) (-8 * canvas.getScale());
				if (nx > 0 || ny > 0) {
					d = (int) (8 * canvas.getScale());
				}
				Polygon poly = new Polygon();
				if (ny == 0) {
					poly.addPoint((int) Math.round(pe.getX() - d), (int) Math.round(pe.getY() + nx / 3));
					poly.addPoint((int) Math.round(pe.getX() - 2 * d), (int) Math.round(pe.getY() - nx / 3));
					poly.addPoint((int) Math.round(pe.getX() - d), (int) Math.round(pe.getY() + nx / 3));
					poly.addPoint((int) Math.round(pe.getX() - 2 * d), (int) Math.round(pe.getY() - nx / 3));
				} else {
					poly.addPoint((int) Math.round(pe.getX() + ny / 3), (int) Math.round(pe.getY()) - d);
					poly.addPoint((int) Math.round(pe.getX() - ny / 3), (int) Math.round(pe.getY()) - 2 * d);
					poly.addPoint((int) Math.round(pe.getX() + ny / 3), (int) Math.round(pe.getY()) - d);
					poly.addPoint((int) Math.round(pe.getX() - ny / 3), (int) Math.round(pe.getY()) - 2 * d);
				}

				canvas.getGraphics().draw(poly);

				return new mxPoint(1, 1);
			}
		});
	}

	/**
	 * 
	 */
	public static mxIMarker getMarker(String name) {
		return markers.get(name);
	}

	/**
	 * 
	 */
	public static void registerMarker(String name, mxIMarker marker) {
		markers.put(name, marker);
	}

}