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Diffstat (limited to 'libjava/classpath/java/awt/GraphicsEnvironment.java')
| -rw-r--r-- | libjava/classpath/java/awt/GraphicsEnvironment.java | 244 |
1 files changed, 0 insertions, 244 deletions
diff --git a/libjava/classpath/java/awt/GraphicsEnvironment.java b/libjava/classpath/java/awt/GraphicsEnvironment.java deleted file mode 100644 index a82e7a3..0000000 --- a/libjava/classpath/java/awt/GraphicsEnvironment.java +++ /dev/null @@ -1,244 +0,0 @@ -/* GraphicsEnvironment.java -- information about the graphics environment - Copyright (C) 2002, 2004, 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; - -import gnu.java.awt.ClasspathToolkit; -import gnu.classpath.SystemProperties; -import java.awt.image.BufferedImage; -import java.util.Locale; - -/** - * This descibes the collection of GraphicsDevice and Font objects available - * on a given platform. The resources might be local or remote, and specify - * the valid configurations for displaying graphics. - * - * @author Eric Blake (ebb9@email.byu.edu) - * @see GraphicsDevice - * @see GraphicsConfiguration - * @since 1.4 - * @status updated to 1.4 - */ -public abstract class GraphicsEnvironment -{ - private static GraphicsEnvironment localGraphicsEnvironment; - - /** - * The environment must be obtained from a factory or query method, hence - * this constructor is protected. - */ - protected GraphicsEnvironment() - { - } - - /** - * Returns the local graphics environment. If the java.awt.graphicsenv - * system property is set, it instantiates the specified class, - * otherwise it assume that the awt toolkit is a ClasspathToolkit - * and delegates to it to create the instance. - * - * @return the local environment - */ - public static GraphicsEnvironment getLocalGraphicsEnvironment() - { - if (localGraphicsEnvironment != null) - return localGraphicsEnvironment; - - String graphicsenv = SystemProperties.getProperty("java.awt.graphicsenv", - null); - if (graphicsenv != null) - { - try - { - // We intentionally use the bootstrap class loader. - localGraphicsEnvironment = (GraphicsEnvironment) - Class.forName(graphicsenv).newInstance(); - return localGraphicsEnvironment; - } - catch (Exception x) - { - throw (InternalError) - new InternalError("Unable to instantiate java.awt.graphicsenv") - .initCause(x); - } - } - else - { - ClasspathToolkit tk; - tk = ((ClasspathToolkit) Toolkit.getDefaultToolkit()); - localGraphicsEnvironment = tk.getLocalGraphicsEnvironment(); - return localGraphicsEnvironment; - } - } - - /** - * Check if the local environment is headless, meaning that it does not - * support a display, keyboard, or mouse. Many methods in the Abstract - * Windows Toolkit (java.awt) throw a {@link HeadlessException} if this - * returns true. - * - * This method returns true if the java.awt.headless property is set - * to "true". - * - * @return true if the environment is headless, meaning that graphics are - * unsupported - * @since 1.4 - */ - public static boolean isHeadless() - { - String headless = SystemProperties.getProperty("java.awt.headless", null); - return "true".equalsIgnoreCase(headless); - } - - /** - * Check if the given environment is headless, meaning that it does not - * support a display, keyboard, or mouse. Many methods in the Abstract - * Windows Toolkit (java.awt) throw a {@link HeadlessException} if this - * returns true. This default implementation returns isHeadless(), so - * subclasses need only override it if they differ. - * - * @return true if the environment is headless, meaning that graphics are - * unsupported - * @since 1.4 - */ - public boolean isHeadlessInstance() - { - return isHeadless(); - } - - /** - * Get an array of all the GraphicsDevice objects. - * - * @return the available graphics devices, may be 0 length - * @throws HeadlessException if the environment is headless - */ - public abstract GraphicsDevice[] getScreenDevices(); - - /** - * Get the default screen GraphicsDevice object. - * - * @return the default screen device - * @throws HeadlessException if the environment is headless - */ - public abstract GraphicsDevice getDefaultScreenDevice(); - - /** - * Return a Graphics2D object which will render into the specified image. - * - * @param image the image to render into - * @return the object that renders into the image - */ - public abstract Graphics2D createGraphics(BufferedImage image); - - /** - * Returns an array of the one-point size fonts available in this - * environment. From there, the user can select the font and derive the - * correct one of proper size and attributes, using <code>deriveFont</code>. - * Only one master version of each font appears in this array; if a font - * can be derived from another, it must be created in that way. - * - * @return the array of available fonts - * @see #getAvailableFontFamilyNames() - * @see Font#deriveFont(int, float) - * @since 1.2 - */ - public abstract Font[] getAllFonts(); - - /** - * Returns an array of the font family names available in this environment. - * This allows flexibility in choosing the style of font, while still letting - * the Font class decide its best match. - * - * @return the array of available font families - * @see #getAllFonts() - * @see Font#getFamily() - * @since 1.2 - */ - public abstract String[] getAvailableFontFamilyNames(); - - /** - * Returns an array of the font family names available in this environment, - * localized to the current Locale if l is non-null. This allows - * flexibility in choosing the style of font, while still letting the Font - * class decide its best match. - * - * @param l the locale to use - * @return the array of available font families, localized - * @see #getAllFonts() - * @see Font#getFamily() - * @since 1.2 - */ - public abstract String[] getAvailableFontFamilyNames(Locale l); - - /** - * Returns the point where a window should be centered. You should probably - * also check that the window fits within the screen bounds. The default - * simply returns the center of the maximum window bounds; subclasses should - * override this if native objects (like scrollbars) make that off-centered. - * - * @return the centering point - * @throws HeadlessException if the environment is headless - * @see #getMaximumWindowBounds() - * @since 1.4 - */ - public Point getCenterPoint() - { - Rectangle r = getMaximumWindowBounds(); - return new Point(r.x + r.width / 2, r.y + r.height / 2); - } - - /** - * Returns the maximum bounds for a centered window object. The default - * implementation simply returns the bounds of the default configuration - * of the default screen; subclasses should override this to if native - * objects (like scrollbars) reduce what is truly available. Also, - * subclasses should override this if the window should be centered across - * a multi-screen display. - * - * @return the maximum window bounds - * @throws HeadlessException if the environment is headless - * @see #getCenterPoint() - * @see GraphicsConfiguration#getBounds() - * @see Toolkit#getScreenInsets(GraphicsConfiguration) - * @since 1.4 - */ - public Rectangle getMaximumWindowBounds() - { - return getDefaultScreenDevice().getDefaultConfiguration().getBounds(); - } -} // class GraphicsEnvironment |