gnu.java.awt
Class ClasspathToolkit
An abstract superclass for Classpath toolkits.
There exist some parts of AWT and Java2D that are specific to
the underlying platform, but for which the
Toolkit class
does not provide suitable abstractions. Examples include some
methods of
Font or
GraphicsEnvironment. Those
methods use ClasspathToolkit as a central place for obtaining
platform-specific functionality.
In addition, ClasspathToolkit implements some abstract methods
of
Toolkit that are not really platform-specific,
such as the maintenance of a cache of loaded images.
Thread Safety: The methods of this class may safely be
called without external synchronization. This also hold for any
inherited
Toolkit methods. Subclasses are responsible for
the necessary synchronization.
addAWTEventListener, addPropertyChangeListener, beep, checkImage, createButton, createCanvas, createCheckbox, createCheckboxMenuItem, createChoice, createComponent, createCustomCursor, createDesktopPeer, createDialog, createDragSourceContextPeer, createFileDialog, createFrame, createImage, createImage, createImage, createImage, createImage, createLabel, createList, createMenu, createMenuBar, createMenuItem, createPanel, createPopupMenu, createScrollPane, createScrollbar, createTextArea, createTextField, createWindow, extends DragGestureRecognizer> T
createDragGestureRecognizer, getAWTEventListeners, getAWTEventListeners, getBestCursorSize, getColorModel, getDefaultToolkit, getDesktopProperty, getFontList, getFontMetrics, getFontPeer, getImage, getImage, getLockingKeyState, getMaximumCursorColors, getMenuShortcutKeyMask, getMouseInfoPeer, getNativeContainer, getPrintJob, getPrintJob, getProperty, getPropertyChangeListeners, getPropertyChangeListeners, getScreenInsets, getScreenResolution, getScreenSize, getSystemClipboard, getSystemEventQueue, getSystemEventQueueImpl, getSystemSelection, initializeDesktopProperties, isDynamicLayoutActive, isDynamicLayoutSet, isFrameStateSupported, isModalExclusionTypeSupported, isModalityTypeSupported, lazilyLoadDesktopProperty, loadSystemColors, mapInputMethodHighlight, prepareImage, removeAWTEventListener, removePropertyChangeListener, setDesktopProperty, setDynamicLayout, setLockingKeyState, sync |
clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait |
createFont
public abstract Font createFont(int format,
InputStream stream) Creates a font, reading the glyph definitions from a stream.
This method provides the platform-specific implementation for
the static factory method
Font.createFont(int,InputStream).
format - the format of the font data, such as Font.TRUETYPE_FONT. An implementation may ignore this argument
if it is able to automatically recognize the font format from the
provided data.stream - an input stream from where the font data is read
in. The stream will be advanced to the position after the font
data, but not closed.
getClasspathFontPeer
public abstract ClasspathFontPeer getClasspathFontPeer(String name,
Map attrs)name - The logical name of the font. This may be either a face
name or a logical font name, or may even be null. A default
implementation of name decoding is provided in
ClasspathFontPeer, but may be overridden in other toolkits.attrs - Any extra TextAttribute attributes
this font peer should have, such as size, weight, family name, or
transformation.
getLocalGraphicsEnvironment
public abstract GraphicsEnvironment getLocalGraphicsEnvironment()
Returns a shared instance of the local, platform-specific
graphics environment.
This method is specific to GNU Classpath. It gets called by
the Classpath implementation of
GraphicsEnvironment.getLocalGraphcisEnvironment().
getMouseNumberOfButtons
public int getMouseNumberOfButtons()
Returns the number of mouse buttons.
(used by java.awt.MouseInfo).
This dummy implementation returns -1 (no mouse).
toolkit implementors should overload this method if possible.
registerImageIOSpis
public void registerImageIOSpis(IIORegistry reg)
Used to register ImageIO SPIs provided by the toolkit.
Our default implementation does nothing.
ClasspathToolkit.java -- Abstract superclass for Classpath toolkits.
Copyright (C) 2003, 2004, 2005, 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.