org.jruby
Class JRubyApplet

java.lang.Object
  extended by java.awt.Component
      extended by java.awt.Container
          extended by java.awt.Panel
              extended by java.applet.Applet
                  extended by org.jruby.JRubyApplet
All Implemented Interfaces:
java.awt.image.ImageObserver, java.awt.MenuContainer, java.io.Serializable, javax.accessibility.Accessible

public class JRubyApplet
extends java.applet.Applet

Author:
MenTaLguY The JRubyApplet class provides a simple way to write Java applets using JRuby without needing to create a custom Java applet class. At applet initialization time, JRubyApplet starts up a JRuby runtime, then evaluates the scriptlet given as the "eval" applet parameter. The Java applet instance is available to the Ruby script as JRUBY_APPLET; the script can define callbacks for applet start, stop, and destroy by passing blocks to JRUBY_APPLET.on_start, JRUBY_APPLET.on_stop, and JRUBY_APPLET.on_destroy, respectively. Ruby code can install a custom paint callback using JRUBY_APPLET.on_paint (the Graphics2D object is passed as an argument to the callback). By default, JRubyApplet painting is double-buffered, but you can select single-buffered painting via JRUBY_APPLET.double_buffered = false. The applet's background color can be set via JRUBY_APPLET.background_color=. You may want to set it to nil if you're not using double-buffering, so that no background color will be drawn (your own paint code is then responsible for filling the area). Beyond these things, you should be able to use JRuby's Java integration to do whatever you would do in Java with the applet instance.
See Also:
Serialized Form

Nested Class Summary
static class JRubyApplet.RubyMethods
           
 
Nested classes/interfaces inherited from class java.applet.Applet
java.applet.Applet.AccessibleApplet
 
Nested classes/interfaces inherited from class java.awt.Panel
java.awt.Panel.AccessibleAWTPanel
 
Nested classes/interfaces inherited from class java.awt.Container
java.awt.Container.AccessibleAWTContainer
 
Nested classes/interfaces inherited from class java.awt.Component
java.awt.Component.AccessibleAWTComponent, java.awt.Component.BaselineResizeBehavior, java.awt.Component.BltBufferStrategy, java.awt.Component.FlipBufferStrategy
 
Field Summary
 
Fields inherited from class java.awt.Component
BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT
 
Fields inherited from interface java.awt.image.ImageObserver
ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH
 
Constructor Summary
JRubyApplet()
           
 
Method Summary
 void destroy()
           
 java.awt.Color getBackgroundColor()
           
 void init()
           
 boolean isDoubleBuffered()
           
 void paint(java.awt.Graphics g)
           
 void setBackgroundColor(java.awt.Color color)
           
 void setDoubleBuffered(boolean shouldBuffer)
           
 void start()
           
 void stop()
           
 void update(java.awt.Graphics g)
           
 
Methods inherited from class java.applet.Applet
getAccessibleContext, getAppletContext, getAppletInfo, getAudioClip, getAudioClip, getCodeBase, getDocumentBase, getImage, getImage, getLocale, getParameter, getParameterInfo, isActive, newAudioClip, play, play, resize, resize, setStub, showStatus
 
Methods inherited from class java.awt.Panel
addNotify
 
Methods inherited from class java.awt.Container
add, add, add, add, add, addContainerListener, addImpl, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getAlignmentX, getAlignmentY, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getInsets, getLayout, getListeners, getMaximumSize, getMinimumSize, getMousePosition, getPreferredSize, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, paramString, preferredSize, print, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, removeNotify, setComponentZOrder, setFocusCycleRoot, setFocusTraversalKeys, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setFont, setLayout, transferFocusDownCycle, validate, validateTree
 
Methods inherited from class java.awt.Component
action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, createVolatileImage, createVolatileImage, disable, disableEvents, dispatchEvent, enable, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBaseline, getBaselineResizeBehavior, getBounds, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphics, getGraphicsConfiguration, getHeight, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocation, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getSize, getToolkit, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isOpaque, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, printAll, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, reshape, setBackground, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setEnabled, setFocusable, setFocusTraversalKeysEnabled, setForeground, setIgnoreRepaint, setLocale, setLocation, setLocation, setMaximumSize, setMinimumSize, setName, setPreferredSize, setSize, setSize, setVisible, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

JRubyApplet

public JRubyApplet()
Method Detail

init

public void init()
Overrides:
init in class java.applet.Applet

setBackgroundColor

public void setBackgroundColor(java.awt.Color color)

getBackgroundColor

public java.awt.Color getBackgroundColor()

isDoubleBuffered

public boolean isDoubleBuffered()
Overrides:
isDoubleBuffered in class java.awt.Component

setDoubleBuffered

public void setDoubleBuffered(boolean shouldBuffer)

start

public void start()
Overrides:
start in class java.applet.Applet

stop

public void stop()
Overrides:
stop in class java.applet.Applet

destroy

public void destroy()
Overrides:
destroy in class java.applet.Applet

update

public void update(java.awt.Graphics g)
Overrides:
update in class java.awt.Container

paint

public void paint(java.awt.Graphics g)
Overrides:
paint in class java.awt.Container


Copyright © 2002-2009 JRuby Team. All Rights Reserved.