/*
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* 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.
*
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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);
}
}