Source for javax.imageio.event.IIOReadUpdateListener

   1: /* IIOReadUpdateListener.java --
   2:    Copyright (C) 2004  Free Software Foundation, Inc.
   3: 
   4: This file is part of GNU Classpath.
   5: 
   6: GNU Classpath is free software; you can redistribute it and/or modify
   7: it under the terms of the GNU General Public License as published by
   8: the Free Software Foundation; either version 2, or (at your option)
   9: any later version.
  10: 
  11: GNU Classpath is distributed in the hope that it will be useful, but
  12: WITHOUT ANY WARRANTY; without even the implied warranty of
  13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14: General Public License for more details.
  15: 
  16: You should have received a copy of the GNU General Public License
  17: along with GNU Classpath; see the file COPYING.  If not, write to the
  18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 USA.
  20: 
  21: Linking this library statically or dynamically with other modules is
  22: making a combined work based on this library.  Thus, the terms and
  23: conditions of the GNU General Public License cover the whole
  24: combination.
  25: 
  26: As a special exception, the copyright holders of this library give you
  27: permission to link this library with independent modules to produce an
  28: executable, regardless of the license terms of these independent
  29: modules, and to copy and distribute the resulting executable under
  30: terms of your choice, provided that you also meet, for each linked
  31: independent module, the terms and conditions of the license of that
  32: module.  An independent module is a module which is not derived from
  33: or based on this library.  If you modify this library, you may extend
  34: this exception to your version of the library, but you are not
  35: obligated to do so.  If you do not wish to do so, delete this
  36: exception statement from your version. */
  37: 
  38: 
  39: package javax.imageio.event;
  40: 
  41: import java.awt.image.BufferedImage;
  42: import java.util.EventListener;
  43: 
  44: import javax.imageio.ImageReader;
  45: 
  46: public interface IIOReadUpdateListener extends EventListener
  47: {
  48:   /**
  49:    * Reports that a given region of the image has been updated.
  50:    * 
  51:    * @param source the <code>ImageReader</code> object calling this method
  52:    * @param image the BufferedImage being updated
  53:    * @param minX the X coordinate of the leftmost updated column of pixels
  54:    * @param minY the Y coordinate of the uppermost updated row of pixels
  55:    * @param width the number of updated pixels horizontally
  56:    * @param height the number of updated pixels vertically
  57:    * @param periodX the horizontal spacing between updated pixels; a value of 1 means no gaps
  58:    * @param periodY the vertical spacing between updated pixels; a value of 1 means no gaps
  59:    * @param bands an array of <code>int</code>s indicating which bands are being updated
  60:    */
  61:   void imageUpdate(ImageReader source, BufferedImage image, int minX,
  62:                    int minY, int width, int height, int periodX, int periodY,
  63:                    int[] bands);
  64: 
  65:   /**
  66:    * Reports that the current read operation has completed a progressive pass.
  67:    * 
  68:    * @param source the <code>ImageReader</code> object calling this method
  69:    * @param image the BufferedImage being updated
  70:    */
  71:   void passComplete(ImageReader source, BufferedImage image);
  72: 
  73:   /**
  74:    * Reports that the current read operation is about to begin a progressive pass.
  75:    * 
  76:    * @param source the <code>ImageReader</code> object calling this method
  77:    * @param image the BufferedImage being updated
  78:    * @param pass the numer of the pass that is about to begin, starting with 0
  79:    * @param minPass the index of the first pass that will be decoded
  80:    * @param maxPass the index of the last pass that will be decoded
  81:    * @param minX the X coordinate of the leftmost updated column of pixels
  82:    * @param minY the Y coordinate of the uppermost updated row of pixels
  83:    * @param periodX the horizontal spacing between updated pixels; a value of 1 means no gaps
  84:    * @param periodY the vertical spacing between updated pixels; a value of 1 means no gaps
  85:    * @param bands an array of <code>int</code>s indicating which bands are being updated
  86:    */
  87:   void passStarted(ImageReader source, BufferedImage image, int pass,
  88:                    int minPass, int maxPass, int minX, int minY, int periodX,
  89:                    int periodY, int[] bands);
  90: 
  91:   /**
  92:    * Reports that the current thumbnail read operation has completed a progressive pass.
  93:    * 
  94:    * @param source the <code>ImageReader</code> object calling this method
  95:    * @param image the BufferedImage being updated
  96:    */
  97:   void thumbnailPassComplete(ImageReader source, BufferedImage image);
  98: 
  99:   /**
 100:    * Reports that the current thumbnail read operation is about to begin a progressive pass.
 101:    * 
 102:    * @param source the <code>ImageReader</code> object calling this method
 103:    * @param image the BufferedImage being updated
 104:    * @param pass the numer of the pass that is about to begin, starting with 0
 105:    * @param minPass the index of the first pass that will be decoded
 106:    * @param maxPass the index of the last pass that will be decoded
 107:    * @param minX the X coordinate of the leftmost updated column of pixels
 108:    * @param minY the Y coordinate of the uppermost updated row of pixels
 109:    * @param periodX the horizontal spacing between updated pixels; a value of 1 means no gaps
 110:    * @param periodY the vertical spacing between updated pixels; a value of 1 means no gaps
 111:    * @param bands an array of <code>int</code>s indicating which bands are being updated
 112:    */
 113:   void thumbnailPassStarted(ImageReader source, BufferedImage image, int pass,
 114:                             int minPass, int maxPass, int minX, int minY,
 115:                             int periodX, int periodY, int[] bands);
 116: 
 117:   /**
 118:    * Reports that a given region of a thumbnail image has been updated.
 119:    *
 120:    * @param source the <code>ImageReader</code> object calling this method
 121:    * @param image the BufferedImage being updated
 122:    * @param minX the X coordinate of the leftmost updated column of pixels
 123:    * @param minY the Y coordinate of the uppermost updated row of pixels
 124:    * @param width the number of updated pixels horizontally
 125:    * @param height the number of updated pixels vertically
 126:    * @param periodX the horizontal spacing between updated pixels; a value of 1 means no gaps
 127:    * @param periodY the vertical spacing between updated pixels; a value of 1 means no gaps
 128:    * @param bands an array of <code>int</code>s indicating which bands are being updated
 129:    */
 130:   void thumbnailUpdate(ImageReader source, BufferedImage image, int minX,
 131:                        int minY, int width, int height, int periodX,
 132:                        int periodY, int[] bands);
 133: }