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/*
* 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.
*/
/**
* @author Sergey I. Salishev
* @version $Revision: 1.2 $
*/
package javax.imageio.event;
import java.awt.image.BufferedImage;
import java.util.EventListener;
import javax.imageio.ImageReader;
/*
* @author Sergey I. Salishev
* @version $Revision: 1.2 $
*/
/**
* The IIOReadUpdateListener interface provides functionality
* to receive notification of pixel updates during image and thumbnail
* reading operations.
*/
public interface IIOReadUpdateListener extends EventListener {
/**
* Notifies this listener that the specified area of the image has been updated.
*
* @param source the ImageReader object which calls this method.
* @param theImage the image to be updated.
* @param minX the minimum X coordinate of the pixels in the updated area.
* @param minY the minimum Y coordinate of the pixels in the updated area.
* @param width the width of updated area.
* @param height the height of updated area.
* @param periodX the horizontal spacing period between updated
* pixels, if it equals 1, there is no space between pixels.
* @param periodY the vertical spacing period between updated
* pixels, if it equals 1, there is no space between pixels.
* @param bands the array of int values indicating the bands being updated.
*/
void imageUpdate(ImageReader source, BufferedImage theImage, int minX,
int minY, int width, int height, int periodX, int periodY,
int[] bands);
/**
* Notifies this listener that the current read operation has completed a
* progressive pass.
*
* @param source the ImageReader object which calls this method.
* @param theImage the image to be updated.
*/
void passComplete(ImageReader source, BufferedImage theImage);
/**
* Notifies this listener that the current read operation has begun
* a progressive pass.
*
* @param source the ImageReader object which calls this method.
* @param theImage the image to be updated.
* @param pass the numer of the pass.
* @param minPass the index of the first pass that will be decoded.
* @param maxPass the index of the last pass that will be decoded.
* @param minX the minimum X coordinate of the pixels in the updated area.
* @param minY the minimum Y coordinate of the pixels in the updated area.
* @param periodX the horizontal spacing period between updated
* pixels, if it equals 1, there is no space between pixels.
* @param periodY the vertical spacing period between updated
* pixels, if it equals 1, there is no space between pixels.
* @param bands the array of int values indicating the bands being updated.
*/
void passStarted(ImageReader source, BufferedImage theImage, int pass,
int minPass, int maxPass, int minX, int minY, int periodX,
int periodY, int[] bands);
/**
* Notifies this listener that the current thumbnail read operation has
* completed a progressive pass.
*
* @param source the ImageReader object which calls this method.
* @param theImage the thumbnail to be updated.
*/
void thumbnailPassComplete(ImageReader source, BufferedImage theImage);
/**
* Notifies this listener that the current thumbnail read operation has
* begun a progressive pass.
*
* @param source the ImageReader object which calls this method.
* @param theThumbnail the thumbnail to be updated.
* @param pass the numer of the pass.
* @param minPass the index of the first pass that will be decoded.
* @param maxPass the index of the last pass that will be decoded.
* @param minX the minimum X coordinate of the pixels in the updated area.
* @param minY the minimum Y coordinate of the pixels in the updated area.
* @param periodX the horizontal spacing period between updated
* pixels, if it equals 1, there is no space between pixels.
* @param periodY the vertical spacing period between updated
* pixels, if it equals 1, there is no space between pixels.
* @param bands the array of int values indicating the bands being updated.
*/
void thumbnailPassStarted(ImageReader source, BufferedImage theThumbnail,
int pass, int minPass, int maxPass, int minX, int minY,
int periodX, int periodY, int[] bands);
/**
* Notifies this listener that a specified area of a thumbnail image has been
* updated.
*
* @param source the ImageReader object which calls this method.
* @param theThumbnail the thumbnail to be updated.
* @param minX the minimum X coordinate of the pixels in the updated area.
* @param minY the minimum Y coordinate of the pixels in the updated area.
* @param width the width of updated area.
* @param height the height of updated area.
* @param periodX the horizontal spacing period between updated
* pixels, if it equals 1, there is no space between pixels.
* @param periodY the vertical spacing period between updated
* pixels, if it equals 1, there is no space between pixels.
* @param bands the array of int values indicating the bands being updated.
*/
void thumbnailUpdate(ImageReader source, BufferedImage theThumbnail,
int minX, int minY, int width, int height, int periodX,
int periodY, int[] bands);
}
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