| /* GraphicsConfiguration.java -- describes characteristics of graphics |
| Copyright (C) 2000, 2001, 2002 Free Software Foundation |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath 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 for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package java.awt; |
| |
| import gnu.classpath.NotImplementedException; |
| |
| import java.awt.geom.AffineTransform; |
| import java.awt.image.BufferedImage; |
| import java.awt.image.ColorModel; |
| import java.awt.image.VolatileImage; |
| |
| /** |
| * This class describes the configuration of various graphics devices, such |
| * as a monitor or printer. Different configurations may exist for the same |
| * device, according to the different native modes supported. |
| * |
| * <p>Virtual devices are supported (for example, in a multiple screen |
| * environment, a virtual device covers all screens simultaneously); the |
| * configuration will have a non-zero relative coordinate system in such |
| * a case. |
| * |
| * @author Eric Blake (ebb9@email.byu.edu) |
| * @see Window |
| * @see Frame |
| * @see GraphicsEnvironment |
| * @see GraphicsDevice |
| * @since 1.0 |
| * @status updated to 1.4 |
| */ |
| public abstract class GraphicsConfiguration |
| { |
| |
| /** The cached image capabilities. */ |
| private ImageCapabilities imageCapabilities; |
| |
| /** The cached buffer capabilities. */ |
| private BufferCapabilities bufferCapabilities; |
| |
| /** |
| * The default constructor. |
| * |
| * @see GraphicsDevice#getConfigurations() |
| * @see GraphicsDevice#getDefaultConfiguration() |
| * @see GraphicsDevice#getBestConfiguration(GraphicsConfigTemplate) |
| * @see Graphics2D#getDeviceConfiguration() |
| */ |
| protected GraphicsConfiguration () |
| { |
| } |
| |
| /** |
| * Gets the associated device that this configuration describes. |
| * |
| * @return the device |
| */ |
| public abstract GraphicsDevice getDevice(); |
| |
| /** |
| * Returns a buffered image optimized to this device, so that blitting can |
| * be supported in the buffered image. |
| * |
| * @param w the width of the buffer |
| * @param h the height of the buffer |
| * @return the buffered image, or null if none is supported |
| */ |
| public abstract BufferedImage createCompatibleImage(int w, int h); |
| |
| /** |
| * Returns a buffered volatile image optimized to this device, so that |
| * blitting can be supported in the buffered image. Because the buffer is |
| * volatile, it can be optimized by native graphics accelerators. |
| * |
| * @param w the width of the buffer |
| * @param h the height of the buffer |
| * @return the buffered image, or null if none is supported |
| * @see Component#createVolatileImage(int, int) |
| * @since 1.4 |
| */ |
| public abstract VolatileImage createCompatibleVolatileImage(int w, int h); |
| |
| /** |
| * Returns a buffered volatile image optimized to this device, and with the |
| * given capabilities, so that blitting can be supported in the buffered |
| * image. Because the buffer is volatile, it can be optimized by native |
| * graphics accelerators. |
| * |
| * @param w the width of the buffer |
| * @param h the height of the buffer |
| * @param caps the desired capabilities of the image buffer |
| * @return the buffered image, or null if none is supported |
| * @throws AWTException if the capabilities cannot be met |
| * @since 1.4 |
| */ |
| public VolatileImage createCompatibleVolatileImage(int w, int h, |
| ImageCapabilities caps) |
| throws AWTException |
| { |
| throw new AWTException("not implemented"); |
| } |
| |
| /** |
| * Returns a buffered volatile image optimized to this device, and |
| * with the given transparency. Because the buffer is volatile, it |
| * can be optimized by native graphics accelerators. |
| * |
| * @param width the width of the buffer |
| * @param height the height of the buffer |
| * @param transparency the transparency value for the buffer |
| * @return the buffered image, or null if none is supported |
| * @since 1.5 |
| */ |
| public abstract VolatileImage createCompatibleVolatileImage(int width, |
| int height, |
| int transparency); |
| |
| /** |
| * Returns a buffered image optimized to this device, and with the specified |
| * transparency, so that blitting can be supported in the buffered image. |
| * |
| * @param w the width of the buffer |
| * @param h the height of the buffer |
| * @param transparency the transparency of the buffer |
| * @return the buffered image, or null if none is supported |
| * @see Transparency#OPAQUE |
| * @see Transparency#BITMASK |
| * @see Transparency#TRANSLUCENT |
| */ |
| public abstract BufferedImage createCompatibleImage(int w, int h, |
| int transparency); |
| |
| /** |
| * Gets the color model of the corresponding device. |
| * |
| * @return the color model |
| */ |
| public abstract ColorModel getColorModel(); |
| |
| /** |
| * Gets a color model for the corresponding device which supports the desired |
| * transparency level. |
| * |
| * @param transparency the transparency of the model |
| * @return the color model, with transparency |
| * @see Transparency#OPAQUE |
| * @see Transparency#BITMASK |
| * @see Transparency#TRANSLUCENT |
| */ |
| public abstract ColorModel getColorModel(int transparency); |
| |
| /** |
| * Returns a transform that maps user coordinates to device coordinates. The |
| * preferred mapping is about 72 user units to 1 inch (2.54 cm) of physical |
| * space. This is often the identity transform. The device coordinates have |
| * the origin at the upper left, with increasing x to the right, and |
| * increasing y to the bottom. |
| * |
| * @return the transformation from user space to device space |
| * @see #getNormalizingTransform() |
| */ |
| public abstract AffineTransform getDefaultTransform(); |
| |
| /** |
| * Returns a transform that maps user coordinates to device coordinates. The |
| * exact mapping is 72 user units to 1 inch (2.54 cm) of physical space. |
| * This is often the identity transform. The device coordinates have the |
| * origin at the upper left, with increasing x to the right, and increasing |
| * y to the bottom. Note that this is more accurate (and thus, sometimes more |
| * costly) than the default transform. |
| * |
| * @return the normalized transformation from user space to device space |
| * @see #getDefaultTransform() |
| */ |
| public abstract AffineTransform getNormalizingTransform(); |
| |
| /** |
| * Returns the bounds of the configuration, in device coordinates. If this |
| * is a virtual device (for example, encompassing several screens), the |
| * bounds may have a non-zero origin. |
| * |
| * @return the device bounds |
| * @since 1.3 |
| */ |
| public abstract Rectangle getBounds(); |
| |
| /** |
| * Returns the buffering capabilities of this configuration. |
| * |
| * @return the buffer capabilities |
| * @since 1.4 |
| */ |
| public BufferCapabilities getBufferCapabilities() |
| { |
| if (imageCapabilities == null) |
| getImageCapabilities(); |
| |
| if (bufferCapabilities == null) |
| bufferCapabilities = new BufferCapabilities(imageCapabilities, |
| imageCapabilities, null); |
| return bufferCapabilities; |
| } |
| |
| /** |
| * Returns the imaging capabilities of this configuration. |
| * |
| * @return the image capabilities |
| * @since 1.4 |
| */ |
| public ImageCapabilities getImageCapabilities() |
| { |
| if (imageCapabilities == null) |
| imageCapabilities = new ImageCapabilities(false); |
| return imageCapabilities; |
| } |
| } // class GraphicsConfiguration |