/*
* 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 Alexey A. Petrenko
* @version $Revision$
*/
package java.awt;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import java.awt.image.ColorModel;
import java.awt.image.VolatileImage;
import org.apache.harmony.awt.internal.nls.Messages;
/**
* The GraphicsConfiguration class contains the characteristics of graphics
* devices such as a printer or monitor, and represents device's capabilities
* and modes. Many GraphicsConfiguration objects can be associated with single
* graphics device.
*
* @since Android 1.0
*/
public abstract class GraphicsConfiguration {
/**
* Constructor could not be used directly and should be obtained in extended
* classes.
*/
protected GraphicsConfiguration() {
}
/**
* Creates BufferedImage image object with a data layout and color model
* compatible with this GraphicsConfiguration with specified width and
* height parameters.
*
* @param width
* the width of BufferedImage.
* @param height
* the height of BufferedImage.
* @return the BufferedImage object with specified width and height
* parameters.
*/
public abstract BufferedImage createCompatibleImage(int width, int height);
/**
* Creates a BufferedImage that has the specified width, height,
* transparency and has a data layout and color model compatible with this
* GraphicsConfiguration.
*
* @param width
* the width of image.
* @param height
* the height of image.
* @param transparency
* the transparency mode.
* @return the BufferedImage object.
*/
public abstract BufferedImage createCompatibleImage(int width, int height, int transparency);
/**
* Creates a VolatileImage that has the specified width and height and has a
* data layout and color model compatible with this GraphicsConfiguration.
*
* @param width
* the width of image.
* @param height
* the height of image.
* @return the VolatileImage object.
*/
public abstract VolatileImage createCompatibleVolatileImage(int width, int height);
/**
* Creates a VolatileImage that supports the specified width, height,
* transparency and has a data layout and color model compatible with this
* GraphicsConfiguration.
*
* @param width
* the width of image.
* @param height
* the height of image.
* @param transparency
* the transparency mode.
* @return the VolatileImage object.
*/
public abstract VolatileImage createCompatibleVolatileImage(int width, int height,
int transparency);
/**
* Gets the bounds of area covered by the GraphicsConfiguration in the
* device coordinates space.
*
* @return the Rectangle of GraphicsConfiguration's bounds.
*/
public abstract Rectangle getBounds();
/**
* Gets the ColorModel of the GraphicsConfiguration.
*
* @return the ColorModel object of the GraphicsConfiguration.
*/
public abstract ColorModel getColorModel();
/**
* Gets the ColorModel of the GraphicsConfiguration which supports specified
* Transparency.
*
* @param transparency
* the Transparency mode: OPAQUE, BITMASK, or TRANSLUCENT.
* @return the ColorModel of the GraphicsConfiguration which supports
* specified Transparency.
*/
public abstract ColorModel getColorModel(int transparency);
/**
* Gets the default AffineTransform of the GraphicsConfiguration. This
* method translates user coordinates to device coordinates.
*
* @return the default AffineTransform of the GraphicsConfiguration.
*/
public abstract AffineTransform getDefaultTransform();
/**
* Gets the GraphicsDevice of the GraphicsConfiguration.
*
* @return the GraphicsDevice of the GraphicsConfiguration.
*/
public abstract GraphicsDevice getDevice();
/**
* Gets the normalizing AffineTransform of the GraphicsConfiguration.
*
* @return the normalizing AffineTransform of the GraphicsConfiguration.
*/
public abstract AffineTransform getNormalizingTransform();
/**
* Creates VolatileImage with specified width, height, ImageCapabilities; a
* data layout and color model compatible with this GraphicsConfiguration.
*
* @param width
* the width of image.
* @param height
* the height of image.
* @param caps
* the ImageCapabilities object.
* @return the VolatileImage which data layout and color model compatible
* with this GraphicsConfiguration.
* @throws AWTException
* if ImageCapabilities is not supported by the
* GraphicsConfiguration.
*/
public VolatileImage createCompatibleVolatileImage(int width, int height, ImageCapabilities caps)
throws AWTException {
VolatileImage res = createCompatibleVolatileImage(width, height);
if (!res.getCapabilities().equals(caps)) {
// awt.14A=Can not create VolatileImage with specified capabilities
throw new AWTException(Messages.getString("awt.14A")); //$NON-NLS-1$
}
return res;
}
/**
* Creates a VolatileImage with specified width, height, transparency and
* ImageCapabilities; a data layout and color model compatible with this
* GraphicsConfiguration.
*
* @param width
* the width of image.
* @param height
* the height of image.
* @param caps
* the ImageCapabilities object.
* @param transparency
* the Transparency mode: OPAQUE, BITMASK, or TRANSLUCENT.
* @return the VolatileImage which data layout and color model compatible
* with this GraphicsConfiguration.
* @throws AWTException
* if ImageCapabilities is not supported by the
* GraphicsConfiguration.
*/
public VolatileImage createCompatibleVolatileImage(int width, int height,
ImageCapabilities caps, int transparency) throws AWTException {
VolatileImage res = createCompatibleVolatileImage(width, height, transparency);
if (!res.getCapabilities().equals(caps)) {
// awt.14A=Can not create VolatileImage with specified capabilities
throw new AWTException(Messages.getString("awt.14A")); //$NON-NLS-1$
}
return res;
}
/**
* Gets the buffering capabilities of the GraphicsConfiguration.
*
* @return the BufferCapabilities object.
*/
public BufferCapabilities getBufferCapabilities() {
return new BufferCapabilities(new ImageCapabilities(false), new ImageCapabilities(false),
BufferCapabilities.FlipContents.UNDEFINED);
}
/**
* Gets the image capabilities of the GraphicsConfiguration.
*
* @return the ImageCapabilities object.
*/
public ImageCapabilities getImageCapabilities() {
return new ImageCapabilities(false);
}
}
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