Initial Contribution

1 files changed, 182 insertions, 0 deletions

diff --git a/awt/java/awt/image/renderable/RenderableImageOp.java b/awt/java/awt/image/renderable/RenderableImageOp.java
new file mode 100644
index 0000000..993ba5f
--- /dev/null
+++ b/awt/java/awt/image/renderable/RenderableImageOp.java
@@ -0,0 +1,182 @@
+/*
+ *  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 Igor V. Stolyarov
+ * @version $Revision$
+ */
+package java.awt.image.renderable;
+
+import java.awt.RenderingHints;
+import java.awt.geom.AffineTransform;
+import java.awt.geom.Rectangle2D;
+import java.awt.image.RenderedImage;
+import java.util.Vector;
+
+import org.apache.harmony.awt.internal.nls.Messages;
+
+/**
+ * The Class RenderableImageOp is a basic implementation of RenderableImage, 
+ * with methods to access the parameter data and perform rendering
+ * operations.
+ */
+public class RenderableImageOp implements RenderableImage {
+
+    /** The CRIF. */
+    ContextualRenderedImageFactory CRIF;
+    
+    /** The param block. */
+    ParameterBlock paramBlock;
+    
+    /** The height. */
+    float minX, minY, width, height;
+
+    /**
+     * Instantiates a new renderable image op.
+     * 
+     * @param CRIF the cRIF
+     * @param paramBlock the param block
+     */
+    public RenderableImageOp(ContextualRenderedImageFactory CRIF, ParameterBlock paramBlock) {
+        this.CRIF = CRIF;
+        this.paramBlock = (ParameterBlock) paramBlock.clone();
+        Rectangle2D r = CRIF.getBounds2D(paramBlock);
+        minX = (float) r.getMinX();
+        minY = (float) r.getMinY();
+        width = (float) r.getWidth();
+        height = (float) r.getHeight();
+    }
+
+    public Object getProperty(String name) {
+        return CRIF.getProperty(paramBlock, name);
+    }
+
+    /**
+     * Sets the parameter block.
+     * 
+     * @param paramBlock the param block
+     * 
+     * @return the parameter block
+     */
+    public ParameterBlock setParameterBlock(ParameterBlock paramBlock) {
+        ParameterBlock oldParam = this.paramBlock;
+        this.paramBlock = (ParameterBlock) paramBlock.clone();
+        return oldParam;
+    }
+
+    public RenderedImage createRendering(RenderContext renderContext) {
+
+        Vector<RenderableImage> sources = getSources();
+        ParameterBlock rdParam = (ParameterBlock) paramBlock.clone();
+
+        if (sources != null) {
+            Vector<Object> rdSources = new Vector<Object>();
+            int i = 0;
+            while (i < sources.size()) {
+                RenderContext newContext = CRIF.mapRenderContext(i, renderContext, paramBlock,
+                        this);
+                RenderedImage rdim = sources.elementAt(i).createRendering(newContext);
+
+                if (rdim != null) {
+                    rdSources.addElement(rdim);
+                }
+                i++;
+            }
+            if (rdSources.size() > 0) {
+                rdParam.setSources(rdSources);
+            }
+        }
+        return CRIF.create(renderContext, rdParam);
+    }
+
+    public RenderedImage createScaledRendering(int w, int h, RenderingHints hints) {
+        if(w == 0 && h == 0) {
+            // awt.60=Width and Height mustn't be equal zero both
+            throw new IllegalArgumentException(Messages.getString("awt.60")); //$NON-NLS-1$
+        }
+        if(w == 0){
+            w = Math.round(h*(getWidth()/getHeight()));
+        }
+
+        if(h == 0){
+            h = Math.round(w*(getHeight()/getWidth()));
+        }
+
+        double sx = (double)w/getWidth();
+        double sy = (double)h/getHeight();
+
+        AffineTransform at = AffineTransform.getScaleInstance(sx, sy);
+        RenderContext context = new RenderContext(at, hints);
+        return createRendering(context);
+    }
+
+    public Vector<RenderableImage> getSources() {
+        if(paramBlock.getNumSources() == 0) {
+            return null;
+        }
+        Vector<RenderableImage> v = new Vector<RenderableImage>();
+        int  i = 0;
+        while(i < paramBlock.getNumSources()){
+            Object o = paramBlock.getSource(i);
+            if(o instanceof RenderableImage){
+                v.addElement((RenderableImage) o);
+            }
+            i++;
+        }
+        return v;
+    }
+
+    public String[] getPropertyNames() {
+        return CRIF.getPropertyNames();
+    }
+
+    /**
+     * Gets the parameter block.
+     * 
+     * @return the parameter block
+     */
+    public ParameterBlock getParameterBlock() {
+        return paramBlock;
+    }
+
+    public RenderedImage createDefaultRendering() {
+        AffineTransform at = new AffineTransform();
+        RenderContext context = new RenderContext(at);
+        return createRendering(context);
+    }
+
+    public boolean isDynamic() {
+        return CRIF.isDynamic();
+    }
+
+    public float getWidth() {
+        return width;
+    }
+
+    public float getMinY() {
+        return minY;
+    }
+
+    public float getMinX() {
+        return minX;
+    }
+
+    public float getHeight() {
+        return height;
+    }
+
+}
+