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src/java.desktop/share/classes/sun/java2d/pipe/AATileGenerator.java

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   1 /*
   2  * Copyright (c) 2007, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any


  84      * no coverage in any of its pixels, or it may be 0xff to indicate
  85      * that the current tile is completely covered by the path, or any
  86      * other value to indicate non-trivial coverage cases.
  87      * @return 0x00 for no coverage, 0xff for total coverage, or any other
  88      *         value for partial coverage of the tile
  89      */
  90     public int getTypicalAlpha();
  91 
  92     /**
  93      * Skips the current tile and moves on to the next tile.
  94      * Either this method, or the getAlpha() method should be called
  95      * once per tile, but not both.
  96      */
  97     public void nextTile();
  98 
  99     /**
 100      * Gets the alpha coverage values for the current tile.
 101      * Either this method, or the nextTile() method should be called
 102      * once per tile, but not both.
 103      */
 104     public void getAlpha(byte tile[], int offset, int rowstride);
 105 
 106     /**
 107      * Disposes this tile generator.
 108      * No further calls will be made on this instance.
 109      */
 110     public void dispose();
 111 }
   1 /*
   2  * Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any


  84      * no coverage in any of its pixels, or it may be 0xff to indicate
  85      * that the current tile is completely covered by the path, or any
  86      * other value to indicate non-trivial coverage cases.
  87      * @return 0x00 for no coverage, 0xff for total coverage, or any other
  88      *         value for partial coverage of the tile
  89      */
  90     public int getTypicalAlpha();
  91 
  92     /**
  93      * Skips the current tile and moves on to the next tile.
  94      * Either this method, or the getAlpha() method should be called
  95      * once per tile, but not both.
  96      */
  97     public void nextTile();
  98 
  99     /**
 100      * Gets the alpha coverage values for the current tile.
 101      * Either this method, or the nextTile() method should be called
 102      * once per tile, but not both.
 103      */
 104     public void getAlpha(byte[] tile, int offset, int rowstride);
 105 
 106     /**
 107      * Disposes this tile generator.
 108      * No further calls will be made on this instance.
 109      */
 110     public void dispose();
 111 }
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