1 files changed, 92 insertions, 0 deletions
diff --git a/src/java/org/apache/fop/render/AbstractGraphics2DAdapter.java b/src/java/org/apache/fop/render/AbstractGraphics2DAdapter.java
new file mode 100644
index 000000000..af5343f33
--- /dev/null
+++ b/src/java/org/apache/fop/render/AbstractGraphics2DAdapter.java
@@ -0,0 +1,92 @@
+/*
+ * Copyright 2006 The Apache Software Foundation.
+ * 
+ * Licensed 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.
+ */
+
+/* $Id$ */
+ 
+package org.apache.fop.render;
+
+import java.awt.Color;
+import java.awt.Graphics2D;
+import java.awt.RenderingHints;
+import java.awt.geom.Rectangle2D;
+import java.awt.image.BufferedImage;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.apache.fop.render.Graphics2DAdapter;
+import org.apache.fop.render.Graphics2DImagePainter;
+import org.apache.fop.render.RendererContext.RendererContextWrapper;
+import org.apache.fop.util.UnitConv;
+
+/**
+ * Graphics2DAdapter implementation for PCL and HP GL/2.
+ */
+public abstract class AbstractGraphics2DAdapter implements Graphics2DAdapter {
+
+    /**
+     * Paints the image to a BufferedImage and returns that.
+     * @param painter the painter which will paint the actual image
+     * @param context the renderer context for the current renderer
+     * @param resolution the requested bitmap resolution
+     * @param gray true if the generated image should be in grayscales
+     * @return the generated BufferedImage
+     */
+    protected BufferedImage paintToBufferedImage(Graphics2DImagePainter painter, 
+             RendererContextWrapper context, int resolution, boolean gray) {
+        int bmw = UnitConv.mpt2px(context.getWidth(), resolution);
+        int bmh = UnitConv.mpt2px(context.getHeight(), resolution);
+        BufferedImage bi;
+        if (gray) {
+            bi = new BufferedImage(bmw, bmh, BufferedImage.TYPE_BYTE_GRAY);
+        } else {
+            bi = new BufferedImage(bmw, bmh, BufferedImage.TYPE_INT_ARGB);
+        }
+        Graphics2D g2d = bi.createGraphics();
+        try {
+            g2d.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS, 
+                    RenderingHints.VALUE_FRACTIONALMETRICS_ON);
+            setRenderingHintsForBufferedImage(g2d);
+            
+            g2d.setBackground(Color.white);
+            g2d.setColor(Color.black);
+            g2d.clearRect(0, 0, bmw, bmh);
+            double sx = (double)bmw / context.getWidth();
+            double sy = (double)bmh / context.getHeight();
+            g2d.scale(sx, sy);
+
+            //Paint the image on the BufferedImage
+            Rectangle2D area = new Rectangle2D.Double(
+                    0.0, 0.0, context.getWidth(), context.getHeight());
+            painter.paint(g2d, area);
+        } finally {
+            g2d.dispose();
+        }
+        return bi;
+    }
+
+    /**
+     * Sets rendering hints on the Graphics2D created for painting to a BufferedImage. Subclasses
+     * can modify the settings to customize the behaviour.
+     * @param g2d the Graphics2D instance
+     */
+    protected void setRenderingHintsForBufferedImage(Graphics2D g2d) {
+        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, 
+            RenderingHints.VALUE_ANTIALIAS_OFF);
+        g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, 
+            RenderingHints.VALUE_TEXT_ANTIALIAS_OFF);
+    }
+
+}