| 1 | /*
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| 2 | * Copyright 2002,2004 The Apache Software Foundation
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| 3 | *
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License");
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| 5 | * you may not use this file except in compliance with the License.
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| 6 | * You may obtain a copy of the License at
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| 7 | *
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0
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| 9 | *
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| 10 | * Unless required by applicable law or agreed to in writing, software
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 13 | * See the License for the specific language governing permissions and
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| 14 | * limitations under the License.
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| 15 | *
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| 16 | */
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| 17 | package org.apache.tools.ant.types.optional.image;
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| 18 |
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| 19 | import javax.media.jai.PlanarImage;
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| 20 |
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| 21 | /**
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| 22 | * Interface which represents an Operation which is "drawable", such
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| 23 | * as a Rectangle, Circle or Text. The Operation is responsible for
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| 24 | * creating its own image buffer and drawing itself into it, then
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| 25 | * wrapping and returning it as a PlanarImage. This allows multible
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| 26 | * "drawable" objects to be nested.
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| 27 | *
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| 28 | * @see org.apache.tools.ant.taskdefs.optional.image.Image
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| 29 | */
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| 30 | public interface DrawOperation {
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| 31 | /**
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| 32 | * Abstract method which is intended to create an image buffer
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| 33 | * and return it so it can be drawn into another object. Use
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| 34 | * an Alpha channel for a "transparent" background.
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| 35 | */
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| 36 | public PlanarImage executeDrawOperation();
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| 37 | }
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