219 lines
7.6 KiB
Java
219 lines
7.6 KiB
Java
/* GraphicsConfiguration.java -- describes characteristics of graphics
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Copyright (C) 2000, 2001, 2002 Free Software Foundation
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package java.awt;
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import java.awt.geom.AffineTransform;
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import java.awt.image.BufferedImage;
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import java.awt.image.ColorModel;
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import java.awt.image.VolatileImage;
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/**
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* This class describes the configuration of various graphics devices, such
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* as a monitor or printer. Different configurations may exist for the same
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* device, according to the different native modes supported.
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*
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* <p>Virtual devices are supported (for example, in a multiple screen
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* environment, a virtual device covers all screens simultaneously); the
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* configuration will have a non-zero relative coordinate system in such
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* a case.
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*
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* @author Eric Blake <ebb9@email.byu.edu>
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* @see Window
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* @see Frame
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* @see GraphicsEnvironment
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* @see GraphicsDevice
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* @since 1.0
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* @status updated to 1.4
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*/
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public abstract class GraphicsConfiguration
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{
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/**
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* The default constructor.
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*
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* @see GraphicsDevice#getConfigurations()
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* @see GraphicsDevice#getDefaultConfiguration()
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* @see GraphicsDevice#getBestConfiguration(GraphicsConfigTemplate)
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* @see Graphics2D#getDeviceConfiguration()
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*/
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protected GraphicsConfiguration ()
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{
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}
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/**
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* Gets the associated device that this configuration describes.
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*
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* @return the device
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*/
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public abstract GraphicsDevice getDevice();
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/**
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* Returns a buffered image optimized to this device, so that blitting can
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* be supported in the buffered image.
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*
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* @param w the width of the buffer
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* @param h the height of the buffer
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* @return the buffered image, or null if none is supported
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*/
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public abstract BufferedImage createCompatibleImage(int w, int h);
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/**
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* Returns a buffered volatile image optimized to this device, so that
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* blitting can be supported in the buffered image. Because the buffer is
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* volatile, it can be optimized by native graphics accelerators.
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*
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* @param w the width of the buffer
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* @param h the height of the buffer
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* @return the buffered image, or null if none is supported
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* @see Component#createVolatileImage(int, int)
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* @since 1.4
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*/
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public abstract VolatileImage createCompatibleVolatileImage(int w, int h);
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/**
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* Returns a buffered volatile image optimized to this device, and with the
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* given capabilities, so that blitting can be supported in the buffered
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* image. Because the buffer is volatile, it can be optimized by native
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* graphics accelerators.
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*
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* @param w the width of the buffer
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* @param h the height of the buffer
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* @param caps the desired capabilities of the image buffer
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* @return the buffered image, or null if none is supported
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* @throws AWTException if the capabilities cannot be met
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* @since 1.4
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*/
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public VolatileImage createCompatibleVolatileImage(int w, int h,
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ImageCapabilities caps)
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throws AWTException
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{
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throw new AWTException("not implemented");
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}
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/**
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* Returns a buffered image optimized to this device, and with the specified
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* transparency, so that blitting can be supported in the buffered image.
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*
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* @param w the width of the buffer
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* @param h the height of the buffer
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* @param transparency the transparency of the buffer
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* @return the buffered image, or null if none is supported
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* @see Transparency#OPAQUE
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* @see Transparency#BITMASK
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* @see Transparency#TRANSLUCENT
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*/
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public abstract BufferedImage createCompatibleImage(int w, int h,
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int transparency);
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/**
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* Gets the color model of the corresponding device.
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*
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* @return the color model
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*/
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public abstract ColorModel getColorModel();
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/**
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* Gets a color model for the corresponding device which supports the desired
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* transparency level.
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*
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* @param transparency the transparency of the model
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* @return the color model, with transparency
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* @see Transparency#OPAQUE
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* @see Transparency#BITMASK
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* @see Transparency#TRANSLUCENT
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*/
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public abstract ColorModel getColorModel(int transparency);
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/**
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* Returns a transform that maps user coordinates to device coordinates. The
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* preferred mapping is about 72 user units to 1 inch (2.54 cm) of physical
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* space. This is often the identity transform. The device coordinates have
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* the origin at the upper left, with increasing x to the right, and
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* increasing y to the bottom.
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*
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* @return the transformation from user space to device space
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* @see #getNormalizingTransform()
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*/
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public abstract AffineTransform getDefaultTransform();
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/**
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* Returns a transform that maps user coordinates to device coordinates. The
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* exact mapping is 72 user units to 1 inch (2.54 cm) of physical space.
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* This is often the identity transform. The device coordinates have the
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* origin at the upper left, with increasing x to the right, and increasing
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* y to the bottom. Note that this is more accurate (and thus, sometimes more
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* costly) than the default transform.
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*
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* @return the normalized transformation from user space to device space
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* @see #getDefaultTransform()
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*/
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public abstract AffineTransform getNormalizingTransform();
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/**
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* Returns the bounds of the configuration, in device coordinates. If this
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* is a virtual device (for example, encompassing several screens), the
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* bounds may have a non-zero origin.
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*
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* @return the device bounds
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* @since 1.3
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*/
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public abstract Rectangle getBounds();
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/**
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* Returns the buffering capabilities of this configuration.
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*
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* @return the buffer capabilities
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* @since 1.4
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*/
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public BufferCapabilities getBufferCapabilities()
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{
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throw new Error("not implemented");
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}
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/**
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* Returns the imaging capabilities of this configuration.
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*
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* @return the image capabilities
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* @since 1.4
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*/
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public ImageCapabilities getImageCapabilities()
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{
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throw new Error("not implemented");
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}
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} // class GraphicsConfiguration
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