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Java > Open Source Codes > org > apache > tools > ant > types > optional > image > DrawOperation


1 /*
2  * Licensed to the Apache Software Foundation (ASF) under one or more
3  * contributor license agreements. See the NOTICE file distributed with
4  * this work for additional information regarding copyright ownership.
5  * The ASF licenses this file to You under the Apache License, Version 2.0
6  * (the "License"); you may not use this file except in compliance with
7  * the License. You may obtain a copy of the License at
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  *
17  */

18 package org.apache.tools.ant.types.optional.image;
19
20 import javax.media.jai.PlanarImage;
21
22 /**
23  * Interface which represents an Operation which is "drawable", such
24  * as a Rectangle, Circle or Text. The Operation is responsible for
25  * creating its own image buffer and drawing itself into it, then
26  * wrapping and returning it as a PlanarImage. This allows multible
27  * "drawable" objects to be nested.
28  *
29  * @see org.apache.tools.ant.taskdefs.optional.image.Image
30  */

31 public interface DrawOperation {
32     /**
33      * Abstract method which is intended to create an image buffer
34      * and return it so it can be drawn into another object. Use
35      * an Alpha channel for a "transparent" background.
36      * @return a planar image
37      */

38     PlanarImage executeDrawOperation();
39 }
40
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