jdk/src/java.desktop/share/classes/sun/awt/image/BufferedImageGraphicsConfig.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/java.desktop/share/classes/sun/awt/image/BufferedImageGraphicsConfig.java Sun Aug 17 15:54:13 2014 +0100
@@ -0,0 +1,173 @@
+/*
+ * Copyright (c) 1997, 2005, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package sun.awt.image;
+
+import java.awt.AWTException;
+import java.awt.Component;
+import java.awt.Graphics2D;
+import java.awt.GraphicsConfiguration;
+import java.awt.GraphicsDevice;
+import java.awt.ImageCapabilities;
+import java.awt.Rectangle;
+import java.awt.Transparency;
+import java.awt.geom.AffineTransform;
+import java.awt.image.BufferedImage;
+import java.awt.image.ColorModel;
+import java.awt.image.DirectColorModel;
+import java.awt.image.Raster;
+import java.awt.image.VolatileImage;
+import java.awt.image.WritableRaster;
+
+public class BufferedImageGraphicsConfig
+ extends GraphicsConfiguration
+{
+ private static final int numconfigs = BufferedImage.TYPE_BYTE_BINARY;
+ private static BufferedImageGraphicsConfig configs[] =
+ new BufferedImageGraphicsConfig[numconfigs];
+
+ public static BufferedImageGraphicsConfig getConfig(BufferedImage bImg) {
+ BufferedImageGraphicsConfig ret;
+ int type = bImg.getType();
+ if (type > 0 && type < numconfigs) {
+ ret = configs[type];
+ if (ret != null) {
+ return ret;
+ }
+ }
+ ret = new BufferedImageGraphicsConfig(bImg, null);
+ if (type > 0 && type < numconfigs) {
+ configs[type] = ret;
+ }
+ return ret;
+ }
+
+ GraphicsDevice gd;
+ ColorModel model;
+ Raster raster;
+ int width, height;
+
+ public BufferedImageGraphicsConfig(BufferedImage bufImg, Component comp) {
+ if (comp == null) {
+ this.gd = new BufferedImageDevice(this);
+ } else {
+ Graphics2D g2d = (Graphics2D)comp.getGraphics();
+ this.gd = g2d.getDeviceConfiguration().getDevice();
+ }
+ this.model = bufImg.getColorModel();
+ this.raster = bufImg.getRaster().createCompatibleWritableRaster(1, 1);
+ this.width = bufImg.getWidth();
+ this.height = bufImg.getHeight();
+ }
+
+ /**
+ * Return the graphics device associated with this configuration.
+ */
+ public GraphicsDevice getDevice() {
+ return gd;
+ }
+
+ /**
+ * Returns a BufferedImage with channel layout and color model
+ * compatible with this graphics configuration. This method
+ * has nothing to do with memory-mapping
+ * a device. This BufferedImage has
+ * a layout and color model
+ * that is closest to this native device configuration and thus
+ * can be optimally blitted to this device.
+ */
+ public BufferedImage createCompatibleImage(int width, int height) {
+ WritableRaster wr = raster.createCompatibleWritableRaster(width, height);
+ return new BufferedImage(model, wr, model.isAlphaPremultiplied(), null);
+ }
+
+ /**
+ * Returns the color model associated with this configuration.
+ */
+ public ColorModel getColorModel() {
+ return model;
+ }
+
+ /**
+ * Returns the color model associated with this configuration that
+ * supports the specified transparency.
+ */
+ public ColorModel getColorModel(int transparency) {
+
+ if (model.getTransparency() == transparency) {
+ return model;
+ }
+ switch (transparency) {
+ case Transparency.OPAQUE:
+ return new DirectColorModel(24, 0xff0000, 0xff00, 0xff);
+ case Transparency.BITMASK:
+ return new DirectColorModel(25, 0xff0000, 0xff00, 0xff, 0x1000000);
+ case Transparency.TRANSLUCENT:
+ return ColorModel.getRGBdefault();
+ default:
+ return null;
+ }
+ }
+
+ /**
+ * Returns the default Transform for this configuration. This
+ * Transform is typically the Identity transform for most normal
+ * screens. Device coordinates for screen and printer devices will
+ * have the origin in the upper left-hand corner of the target region of
+ * the device, with X coordinates
+ * increasing to the right and Y coordinates increasing downwards.
+ * For image buffers, this Transform will be the Identity transform.
+ */
+ public AffineTransform getDefaultTransform() {
+ return new AffineTransform();
+ }
+
+ /**
+ *
+ * Returns a Transform that can be composed with the default Transform
+ * of a Graphics2D so that 72 units in user space will equal 1 inch
+ * in device space.
+ * Given a Graphics2D, g, one can reset the transformation to create
+ * such a mapping by using the following pseudocode:
+ * <pre>
+ * GraphicsConfiguration gc = g.getGraphicsConfiguration();
+ *
+ * g.setTransform(gc.getDefaultTransform());
+ * g.transform(gc.getNormalizingTransform());
+ * </pre>
+ * Note that sometimes this Transform will be identity (e.g. for
+ * printers or metafile output) and that this Transform is only
+ * as accurate as the information supplied by the underlying system.
+ * For image buffers, this Transform will be the Identity transform,
+ * since there is no valid distance measurement.
+ */
+ public AffineTransform getNormalizingTransform() {
+ return new AffineTransform();
+ }
+
+ public Rectangle getBounds() {
+ return new Rectangle(0, 0, width, height);
+ }
+}