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an Open Source BPMN 2.0 Modeler

There is a newer version: 2.2.18

package org.yaoqiang.graph.shape;

import java.awt.Rectangle;
import java.awt.Shape;
import java.awt.geom.Ellipse2D;
import java.util.Map;

import org.yaoqiang.graph.util.Constants;

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

/**
 * EventShape
 * 
 * @author Shi Yaoqiang([email protected])
 */
public class EventShape extends mxBasicShape {

	public void paintShape(mxGraphics2DCanvas canvas, mxCellState state) {
		super.paintShape(canvas, state);

		Rectangle rect = state.getRectangle();
		Map style = state.getStyle();

		// Paint Image
		double scale = canvas.getScale();
		int imgWidth = (int) (mxUtils.getInt(style, mxConstants.STYLE_IMAGE_WIDTH, mxConstants.DEFAULT_IMAGESIZE) * scale);
		int imgHeight = (int) (mxUtils.getInt(style, mxConstants.STYLE_IMAGE_HEIGHT, mxConstants.DEFAULT_IMAGESIZE) * scale);
		Rectangle imageBounds = state.getRectangle();
		imageBounds.setRect(imageBounds.getX() + (imageBounds.getWidth() - imgWidth) / 2, imageBounds.getY() + (imageBounds.getHeight() - imgHeight) / 2,
				imgWidth, imgHeight);

		canvas.drawImage(imageBounds, canvas.getImageForStyle(style));

		String type = mxUtils.getString(style, Constants.STYLE_TYPE, "");
		if (type.equals(Constants.EVENT_STYLE_INTERMEDIATE)) {
			int inset = (int) Math.round((mxUtils.getFloat(style, mxConstants.STYLE_STROKEWIDTH, 1) + 3) * canvas.getScale());

			int x = rect.x + inset;
			int y = rect.y + inset;
			int w = rect.width - 2 * inset;
			int h = rect.height - 2 * inset;

			canvas.getGraphics().drawOval(x, y, w, h);
		}
	}

	public Shape createShape(mxGraphics2DCanvas canvas, mxCellState state) {
		Rectangle rect = state.getRectangle();
		return new Ellipse2D.Float(rect.x, rect.y, rect.width, rect.height);
	}
}