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gnu.java.awt.peer.headless

Class HeadlessGraphicsEnvironment

public class HeadlessGraphicsEnvironment
extends GraphicsEnvironment

Method Summary

Graphics2D
createGraphics(BufferedImage image)
Return a Graphics2D object which will render into the specified image.
Font[]
getAllFonts()
Returns an array of the one-point size fonts available in this environment.
String[]
getAvailableFontFamilyNames()
Returns an array of the font family names available in this environment.
String[]
getAvailableFontFamilyNames(Locale l)
Returns an array of the font family names available in this environment, localized to the current Locale if l is non-null.
GraphicsDevice
getDefaultScreenDevice()
Get the default screen GraphicsDevice object.
GraphicsDevice[]
getScreenDevices()
Get an array of all the GraphicsDevice objects.

Methods inherited from class java.awt.GraphicsEnvironment

createGraphics, getAllFonts, getAvailableFontFamilyNames, getAvailableFontFamilyNames, getCenterPoint, getDefaultScreenDevice, getLocalGraphicsEnvironment, getMaximumWindowBounds, getScreenDevices, isHeadless, isHeadlessInstance

Methods inherited from class java.lang.Object

clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

createGraphics

public Graphics2D createGraphics(BufferedImage image)
Return a Graphics2D object which will render into the specified image.
Overrides:
createGraphics in interface GraphicsEnvironment
Parameters:
image - the image to render into
Returns:
the object that renders into the image

getAllFonts

public Font[] getAllFonts()
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 deriveFont. 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.
Overrides:
getAllFonts in interface GraphicsEnvironment
Returns:
the array of available fonts
Since:
1.2
See Also:
GraphicsEnvironment.getAvailableFontFamilyNames(), Font.deriveFont(int,float)

getAvailableFontFamilyNames

public String[] getAvailableFontFamilyNames()
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.
Overrides:
getAvailableFontFamilyNames in interface GraphicsEnvironment
Returns:
the array of available font families
Since:
1.2
See Also:
GraphicsEnvironment.getAllFonts(), Font.getFamily()

getAvailableFontFamilyNames

public String[] getAvailableFontFamilyNames(Locale l)
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.
Overrides:
getAvailableFontFamilyNames in interface GraphicsEnvironment
Parameters:
l - the locale to use
Returns:
the array of available font families, localized
Since:
1.2
See Also:
GraphicsEnvironment.getAllFonts(), Font.getFamily()

getDefaultScreenDevice

public GraphicsDevice getDefaultScreenDevice()
Get the default screen GraphicsDevice object.
Overrides:
getDefaultScreenDevice in interface GraphicsEnvironment
Returns:
the default screen device
Throws:
HeadlessException - if the environment is headless

getScreenDevices

public GraphicsDevice[] getScreenDevices()
Get an array of all the GraphicsDevice objects.
Overrides:
getScreenDevices in interface GraphicsEnvironment
Returns:
the available graphics devices, may be 0 length
Throws:
HeadlessException - if the environment is headless
HeadlessGraphicsEnvironment.java -- A graphics environment for headless mode Copyright (C) 2006 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.

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