Ant example source code file (Arc.java)

This example Ant source code file (Arc.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Ant tags/keywords

arc, awt, basicshape, basicstroke, bufferedimage, drawoperation, drawoperation, geometry, graphics2d, graphics2d, image, imageoperation, planarimage, planarimage, transformoperation, transformoperation

The Arc.java source code

/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 */
package org.apache.tools.ant.types.optional.image;

import javax.media.jai.PlanarImage;
import java.awt.BasicStroke;
import java.awt.Graphics2D;
import java.awt.geom.Arc2D;
import java.awt.image.BufferedImage;

/**
 * Draw an arc.
 */
public class Arc extends BasicShape implements DrawOperation {
    // CheckStyle:VisibilityModifier OFF - bc
    protected int width = 0;
    protected int height = 0;
    protected int start = 0;
    protected int stop = 0;
    protected int type = Arc2D.OPEN;
    // CheckStyle:VisibilityModifier ON

    /**
     * Set the width.
     * @param width the width of the arc.
     */
    public void setWidth(int width) {
        this.width = width;
    }

    /**
     * Set the height.
     * @param height the height of the arc.
     */
    public void setHeight(int height) {
        this.height = height;
    }

    /**
     * Set the start of the arc.
     * @param start the start of the arc.
     */
    public void setStart(int start) {
        this.start = start;
    }

    /**
     * Set the stop of the arc.
     * @param stop the stop of the arc.
     */
    public void setStop(int stop) {
        this.stop = stop;
    }

    /**
     * Set the type of arc.
     * @param strType the type to use - open, pie or chord.
     * @todo refactor using an EnumeratedAttribute
     */
    public void setType(String strType) {
        if (strType.toLowerCase().equals("open")) {
            type = Arc2D.OPEN;
        } else if (strType.toLowerCase().equals("pie")) {
            type = Arc2D.PIE;
        } else if (strType.toLowerCase().equals("chord")) {
            type = Arc2D.CHORD;
        }
    }

    /** {@inheritDoc}. */
    public PlanarImage executeDrawOperation() {
        BufferedImage bi = new BufferedImage(width + (stroke_width * 2),
            height + (stroke_width * 2), BufferedImage.TYPE_4BYTE_ABGR_PRE);

        Graphics2D graphics = (Graphics2D) bi.getGraphics();

        if (!stroke.equals("transparent")) {
            BasicStroke bStroke = new BasicStroke(stroke_width);
            graphics.setColor(ColorMapper.getColorByName(stroke));
            graphics.setStroke(bStroke);
            graphics.draw(new Arc2D.Double(stroke_width, stroke_width, width,
                height, start, stop, type));
        }

        if (!fill.equals("transparent")) {
            graphics.setColor(ColorMapper.getColorByName(fill));
            graphics.fill(new Arc2D.Double(stroke_width, stroke_width,
                width, height, start, stop, type));
        }


        for (int i = 0; i < instructions.size(); i++) {
            ImageOperation instr = ((ImageOperation) instructions.elementAt(i));
            if (instr instanceof DrawOperation) {
                PlanarImage img = ((DrawOperation) instr).executeDrawOperation();
                graphics.drawImage(img.getAsBufferedImage(), null, 0, 0);
            } else if (instr instanceof TransformOperation) {
                graphics = (Graphics2D) bi.getGraphics();
                PlanarImage image = ((TransformOperation) instr)
                    .executeTransformOperation(PlanarImage.wrapRenderedImage(bi));
                bi = image.getAsBufferedImage();
            }
        }
        return PlanarImage.wrapRenderedImage(bi);
    }
}