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authorAndrew Haley <aph@redhat.com>2016-09-30 16:24:48 +0000
committerAndrew Haley <aph@gcc.gnu.org>2016-09-30 16:24:48 +0000
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Makefile.def: Remove libjava.
2016-09-30 Andrew Haley <aph@redhat.com> * Makefile.def: Remove libjava. * Makefile.tpl: Likewise. * Makefile.in: Regenerate. * configure.ac: Likewise. * configure: Likewise. * gcc/java: Remove. * libjava: Likewise. From-SVN: r240662
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-/* VolatileImage.java -- a hardware-accelerated image buffer
- Copyright (C) 2002, 2005 Free Software Foundation, Inc.
-
-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.image;
-
-import java.awt.Graphics;
-import java.awt.Graphics2D;
-import java.awt.GraphicsConfiguration;
-import java.awt.Image;
-import java.awt.Transparency;
-import java.awt.ImageCapabilities;
-
-/**
- * VolatileImage represents a hardware-accelerated graphics buffer.
- * The native graphics system may free or damage the resources
- * occupied by a VolatileImage at any time. As such, one must
- * frequently check the "validity" of the image buffer's resources.
- *
- * A volatile image's "validity" depends on multiple factors. Its
- * resources may have become unavailble in which case you must
- * reallocate them. If you move the image from one output device to
- * another, you may need to recreate the image's resources if the new
- * output device's capabilities don't match the old one's. Finally,
- * if the contents of the image's buffer have been damaged you must
- * re-render the image.
- *
- * VolatileImages should always be created using either
- * Component.createVolatileImage or
- * GraphicsConfiguration.createCompatibleVolatileImage.
- */
-public abstract class VolatileImage extends Image
- implements Transparency
-{
- /**
- * One of validate's possible return values. Indicates that the
- * image buffer matches its graphics configuration's capabilities
- * and that its resources are initialized and ready to be drawn
- * into. Also implies that any existing image rendered to the
- * buffer is intact and need not be re-rendered.
- */
- public static final int IMAGE_OK = 0;
-
- /**
- * One of validate's possible return values. Indicates that the
- * image buffer has been restored, meaning that it is valid and
- * ready-to-use but that its previous contents have been lost. This
- * return value implies that the image needs to be re-rendered.
- */
- public static final int IMAGE_RESTORED = 1;
-
- /**
- * One of validate's possible return values. Indicates that the
- * image buffer type is unsupported by the current graphics
- * configuration. The graphics configuration may have changed, for
- * example if the image moved from one output device to another.
- * This return value implies that the image buffer's resources
- * should be re-acquired.
- */
- public static final int IMAGE_INCOMPATIBLE = 2;
-
- /**
- * This image's transparency type. One of Transparency.BITMASK,
- * Transparency.OPAQUE or Transparency.TRANSLUCENT.
- *
- * @since 1.5
- */
- protected int transparency;
-
- /**
- * Default constructor. VolatileImages should not be created
- * directly. Rather, you should use Component.createVolatileImage
- * or GraphicsConfiguration.createCompatibleVolatileImage.
- */
- public VolatileImage()
- {
- }
-
- /**
- * Returns an image representing the current state of the volatile
- * image buffer. The returned image is static meaning that it is
- * not updated after being created. It is a snapshot of the
- * volatile image buffer at the time getSnapshot is called.
- *
- * This method, which reads pixels from the volatile image buffer,
- * may be less-performant than methods that write pixels since
- * VolatileImages are typically optimized for writing.
- *
- * @return a BufferedImage representing this VolatileImage
- */
- public abstract BufferedImage getSnapshot();
-
- /**
- * Returns the width of this image buffer.
- *
- * @return the width of this VolatileImage
- */
- public abstract int getWidth();
-
- /**
- * Returns the height of this image buffer.
- *
- * @return the height of this VolatileImage
- */
- public abstract int getHeight();
-
- /**
- * Calling this method is equivalent to calling
- * getSnapshot().getSource(). The ImageProducer produces pixels
- * from the BufferedImage snapshot and not from the VolatileImage
- * itself. Thus, changes to the VolatileImage that occur after this
- * ImageProducer has been retrieved will not be reflected in the
- * produced pixels.
- *
- * This method, which reads pixels from the volatile image buffer,
- * may be less-performant than methods that write pixels since
- * VolatileImages are typically optimized for writing.
- *
- * @return an ImageProducer for a static BufferedImage snapshot of
- * this image buffer
- */
- public ImageProducer getSource()
- {
- return getSnapshot().getSource();
- }
-
- /**
- * Releases the system resources taken by this image.
- */
- public void flush()
- {
- }
-
- /**
- * Returns a Graphics2D object that can be used to draw onto this
- * image. This method is present for backwards-compatibility. It
- * simply returns the result of createGraphics.
- *
- * @return a Graphics2D object that can be used to draw onto this
- * image
- */
- public Graphics getGraphics()
- {
- return createGraphics();
- }
-
- /**
- * Returns a Graphics2D object that can be used to draw onto this
- * image.
- *
- * @return a Graphics2D object that can be used to draw onto this
- * image
- */
- public abstract Graphics2D createGraphics();
-
- /**
- * Validates and restores this image. If the image buffer has
- * become unavailable for further use since the last call to
- * validate, validate will allocate a new image buffer. The image
- * is also "validated" against the GraphicsConfiguration parameter.
- *
- * "Validating" the image means checking that the capabilities it
- * requires of the output device are indeed supported by the given
- * output device. If the image's characteristics, which can be
- * highly output device-specific, are not supported by the graphics
- * configuration, then IMAGE_INCOMPATIBLE will be returned. This
- * can happen, for example, if this image was created on one output
- * device, then validated against a different output device with
- * different capabilities. Calling validate with a NULL gc argument
- * causes validate to skip the validation test.
- *
- * @param gc graphics configuration against which to validate or
- * NULL
- *
- * @return a code indicating the result of validation. One of:
- * <ul>
- * <li><code>IMAGE_OK</code> if the image did not need to be
- * validated and didn't need to be restored</li>
- * <li><code>IMAGE_RESTORED</code> if the image may need to be
- * re-rendered.</li>
- * <li><code>IMAGE_INCOMPATIBLE</code> if this image's
- * requirements are not fulfilled by the graphics configuration
- * parameter. This implies that you need to create a new
- * VolatileImage for the different GraphicsConfiguration or
- * Component. This return value implies nothing about whether the
- * image is valid or needs to be re-rendered.</li>
- * </ul>
- */
- public abstract int validate(GraphicsConfiguration gc);
-
- /**
- * Returns true if the contents of the image buffer have been
- * damaged or if the image buffer's resources have been reclaimed by
- * the graphics system. You should call this method after a series
- * of rendering operations to or from the image, to see if the image
- * buffer needs to be revalidated or the image re-rendered.
- *
- * @return true if the validate should be called, false otherwise
- */
- public abstract boolean contentsLost();
-
- /**
- * Returns the capabilities of this image buffer.
- *
- * @return the capabilities of this image buffer
- */
- public abstract ImageCapabilities getCapabilities();
-
- /**
- * Returns the transparency type of this image.
- *
- * @return Transparency.OPAQUE, Transparency.BITMASK or
- * Transparency.TRANSLUCENT
- */
- public int getTransparency()
- {
- return transparency;
- }
-}