1 /*
   2  * Copyright (c) 2008, 2013, 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
  23  * questions.
  24  */
  25 
  26 package com.sun.scenario.effect.impl.prism;
  27 
  28 import com.sun.scenario.effect.Effect;
  29 import com.sun.scenario.effect.FilterContext;
  30 import com.sun.scenario.effect.ImageData;
  31 import com.sun.scenario.effect.Merge;
  32 import com.sun.scenario.effect.impl.EffectPeer;
  33 import com.sun.scenario.effect.impl.Renderer;
  34 import com.sun.javafx.geom.Rectangle;
  35 import com.sun.javafx.geom.transform.BaseTransform;
  36 import com.sun.prism.Graphics;
  37 
  38 public class PrMergePeer extends EffectPeer {
  39 
  40     public PrMergePeer(FilterContext fctx, Renderer r, String uniqueName) {
  41         super(fctx, r, uniqueName);
  42     }
  43 
  44     @Override
  45     public ImageData filter(Effect effect,
  46                             BaseTransform transform,
  47                             Rectangle outputClip,
  48                             ImageData... inputs)
  49     {
  50         FilterContext fctx = getFilterContext();
  51         Merge merge = (Merge)effect;
  52 
  53         Rectangle unionbounds = merge.getResultBounds(transform, outputClip, inputs);
  54         PrDrawable dst = (PrDrawable)getRenderer().
  55             getCompatibleImage(unionbounds.width, unionbounds.height);
  56         if (dst == null) {
  57             return new ImageData(fctx, null, unionbounds);
  58         }
  59 
  60         Graphics gdst = dst.createGraphics();
  61         for (ImageData input : inputs) {
  62             PrEffectHelper.renderImageData(gdst, input, unionbounds);
  63         }
  64 
  65         return new ImageData(fctx, dst, unionbounds);
  66     }
  67 }