org.objectweb.tribe.demos.draw
Class WhiteBoard.DrawPanel

java.lang.Object
  extended byjava.awt.Component
      extended byjava.awt.Container
          extended byjavax.swing.JComponent
              extended byjavax.swing.JPanel
                  extended byorg.objectweb.tribe.demos.draw.WhiteBoard.DrawPanel
All Implemented Interfaces:
javax.accessibility.Accessible, java.util.EventListener, java.awt.image.ImageObserver, java.awt.MenuContainer, java.awt.event.MouseMotionListener, java.io.Serializable
Enclosing class:
WhiteBoard

private class WhiteBoard.DrawPanel
extends javax.swing.JPanel
implements java.awt.event.MouseMotionListener

This class defines a DrawPanel used for handling mouse events and display.

Version:
1.0
Author:
Bela Ban, Emmanuel Cecchet

Nested Class Summary
 
Nested classes inherited from class javax.swing.JPanel
javax.swing.JPanel.AccessibleJPanel
 
Nested classes inherited from class javax.swing.JComponent
javax.swing.JComponent.AccessibleJComponent
 
Nested classes inherited from class java.awt.Container
java.awt.Container.AccessibleAWTContainer
 
Nested classes inherited from class java.awt.Component
java.awt.Component.AccessibleAWTComponent, java.awt.Component.BltBufferStrategy, java.awt.Component.FlipBufferStrategy
 
Field Summary
(package private)  java.awt.Dimension d
           
(package private)  java.awt.Graphics gr
           
(package private)  java.awt.Image img
           
(package private)  java.awt.Dimension imgsize
           
(package private)  java.awt.Dimension preferred_size
           
 
Fields inherited from class javax.swing.JPanel
 
Fields inherited from class javax.swing.JComponent
accessibleContext, listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW
 
Fields inherited from class java.awt.Container
 
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
WhiteBoard.DrawPanel()
          Creates a new DrawPanel object
 
Method Summary
 void clear()
          Clear the frame content
(package private)  void createOffscreenImage()
          Create an off screen image.
 void drawPoint(WhiteBoardCommand c)
          Adds pixel to queue and calls repaint() whenever we have MAX_ITEMS pixels in the queue or when MAX_TIME msecs have elapsed (whichever comes first).
 java.awt.Dimension getPreferredSize()
           
 void mouseDragged(java.awt.event.MouseEvent e)
           
 void mouseMoved(java.awt.event.MouseEvent e)
           
 void paintComponent(java.awt.Graphics g)
           
 
Methods inherited from class javax.swing.JPanel
getAccessibleContext, getUI, getUIClassID, paramString, setUI, updateUI
 
Methods inherited from class javax.swing.JComponent
addAncestorListener, addNotify, addPropertyChangeListener, addPropertyChangeListener, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBorder, getBounds, getClientProperty, getComponentGraphics, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getGraphics, getHeight, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPropertyChangeListeners, getPropertyChangeListeners, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, isDoubleBuffered, isLightweightComponent, isManagingFocus, isMaximumSizeSet, isMinimumSizeSet, isOpaque, isOptimizedDrawingEnabled, isPaintingTile, isPreferredSizeSet, isRequestFocusEnabled, isValidateRoot, paint, paintBorder, paintChildren, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removePropertyChangeListener, removePropertyChangeListener, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setEnabled, setFont, setForeground, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update
 
Methods inherited from class java.awt.Container
add, add, add, add, add, addContainerListener, addImpl, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setFocusCycleRoot, setFocusTraversalKeys, setFocusTraversalPolicy, setLayout, transferFocusBackward, 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, createImage, createImage, createVolatileImage, createVolatileImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMouseWheelListeners, getName, getParent, getPeer, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, repaint, repaint, repaint, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusUpCycle
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Field Detail

preferred_size

java.awt.Dimension preferred_size

img

java.awt.Image img

d

java.awt.Dimension d

imgsize

java.awt.Dimension imgsize

gr

java.awt.Graphics gr
Constructor Detail

WhiteBoard.DrawPanel

public WhiteBoard.DrawPanel()
Creates a new DrawPanel object

Method Detail

createOffscreenImage

void createOffscreenImage()
Create an off screen image.


mouseDragged

public void mouseDragged(java.awt.event.MouseEvent e)
Specified by:
mouseDragged in interface java.awt.event.MouseMotionListener
See Also:
MouseMotionListener.mouseDragged(java.awt.event.MouseEvent)

mouseMoved

public void mouseMoved(java.awt.event.MouseEvent e)
Specified by:
mouseMoved in interface java.awt.event.MouseMotionListener
See Also:
MouseMotionListener.mouseMoved(java.awt.event.MouseEvent)

drawPoint

public void drawPoint(WhiteBoardCommand c)
Adds pixel to queue and calls repaint() whenever we have MAX_ITEMS pixels in the queue or when MAX_TIME msecs have elapsed (whichever comes first). The advantage compared to just calling repaint() after adding a pixel to the queue is that repaint() can most often draw multiple points at the same time.


clear

public void clear()
Clear the frame content


getPreferredSize

public java.awt.Dimension getPreferredSize()
See Also:
Component.getPreferredSize()

paintComponent

public void paintComponent(java.awt.Graphics g)
See Also:
JComponent.paintComponent(java.awt.Graphics)


Copyright © 2004 - ObjectWeb Consortium - All Rights Reserved.