ballworlds.framework
Class WorldPanel

java.lang.Object
  java.awt.Component
      java.awt.Container
          javax.swing.JComponent
              javax.swing.JPanel
                  ballworlds.framework.WorldPanel

All Implemented Interfaces:

MouseListener, MouseMotionListener, ImageObserver, MenuContainer, Serializable, Runnable, EventListener, Accessible

public class WorldPanel
extends JPanel
implements MouseListener, MouseMotionListener, Runnable

A WorldPanel displays its associated World and the Balls in that World.

Author:

David Mutchler, Salman Azhar and others, January 2005. Modified September, 2008.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class javax.swing.JPanel

JPanel.AccessibleJPanel

Nested classes/interfaces inherited from class javax.swing.JComponent

JComponent.AccessibleJComponent

Nested classes/interfaces inherited from class java.awt.Container

Container.AccessibleAWTContainer

Nested classes/interfaces inherited from class java.awt.Component

Component.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy

Field Summary

static Color

SELECTED_BALL_COLOR Color of the selected Ball.

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.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

WorldPanel(Dimension size, Color color, World world)
Makes this panel respond to mouse actions and repeatedly repaint itself.

Method Summary

void	mouseClicked(MouseEvent event) Toggles the nearest Ball between the paused and not-paused state.
void	mouseDragged(MouseEvent event) For the selected Ball (if any), moves the Ball to the current mouse point.
void	mouseEntered(MouseEvent event) Does nothing.
void	mouseExited(MouseEvent event) Does nothing.
void	mouseMoved(MouseEvent event) Does nothing.
void	mousePressed(MouseEvent event) Sets the selected Ball to the Ball nearest the mouse point.
void	mouseReleased(MouseEvent event) Sets the selected Ball to null (i.e., no Ball is selected).
void	paintComponent(Graphics g) Draws the World and its Balls.
void	run() Repeatedly repaints this panel.

Methods inherited from class javax.swing.JPanel

getAccessibleContext, getUI, getUIClassID, paramString, setUI, updateUI

Methods inherited from class javax.swing.JComponent

addAncestorListener, addNotify, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBaseline, getBaselineResizeBehavior, getBorder, getBounds, getClientProperty, getComponentGraphics, getComponentPopupMenu, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getFontMetrics, getGraphics, getHeight, getInheritsPopupMenu, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPopupLocation, getPreferredSize, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingForPrint, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paint, paintBorder, paintChildren, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setComponentPopupMenu, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setEnabled, setFocusTraversalKeys, setFont, setForeground, setInheritsPopupMenu, 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, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, getMousePosition, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, 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, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isPreferredSizeSet, 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, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, 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

SELECTED_BALL_COLOR

public static final Color SELECTED_BALL_COLOR

Color of the selected Ball.

Constructor Detail

WorldPanel

public WorldPanel(Dimension size,
                  Color color,
                  World world)

Makes this panel respond to mouse actions and repeatedly repaint itself. Also sets the size of this panel to the given size and associates this WorldPanel with the given World,

Parameters:

size - size of this panel.

color - Background color for this WorldPanel.

world - the World associated with this WorldPanel.

Method Detail

paintComponent

public void paintComponent(Graphics g)

Draws the World and its Balls.

Overrides:

paintComponent in class JComponent

Parameters:

g - the Graphics object onto which to draw.

mousePressed

public void mousePressed(MouseEvent event)

Sets the selected Ball to the Ball nearest the mouse point.

Specified by:

mousePressed in interface MouseListener

Parameters:

event - The MouseEvent that caused this method to be invoked.

mouseReleased

public void mouseReleased(MouseEvent event)

Sets the selected Ball to null (i.e., no Ball is selected).

Specified by:

mouseReleased in interface MouseListener

Parameters:

event - The MouseEvent that caused this method to be invoked.

mouseEntered

public void mouseEntered(MouseEvent event)

Does nothing.

Specified by:

mouseEntered in interface MouseListener

Parameters:

event - The MouseEvent that caused this method to be invoked.

mouseExited

public void mouseExited(MouseEvent event)

Does nothing.

Specified by:

mouseExited in interface MouseListener

Parameters:

event - The MouseEvent that caused this method to be invoked.

mouseClicked

public void mouseClicked(MouseEvent event)

Toggles the nearest Ball between the paused and not-paused state.

Specified by:

mouseClicked in interface MouseListener

Parameters:

event - The MouseEvent that caused this method to be invoked.

mouseDragged

public void mouseDragged(MouseEvent event)

For the selected Ball (if any), moves the Ball to the current mouse point.

Specified by:

mouseDragged in interface MouseMotionListener

Parameters:

event - The MouseEvent that caused this method to be invoked.

mouseMoved

public void mouseMoved(MouseEvent event)

Does nothing.

Specified by:

mouseMoved in interface MouseMotionListener

Parameters:

event - The MouseEvent that caused this method to be invoked.

run

public void run()

Repeatedly repaints this panel.

Specified by:

run in interface Runnable