de.nidanet.dev.fun.winter.snow
Class Snow

java.lang.Object
  java.awt.Component
      java.awt.Canvas
          de.nidanet.dev.fun.winter.snow.Snow

All Implemented Interfaces:

ImageObserver, MenuContainer, Serializable, Runnable, Accessible

public class Snow
extends Canvas
implements Runnable

An object of this class represents the screen for the falling flakes. It runs as an single thread, too and produces every 5ms a new flake at a random x-position.

Since:

2009-12-19

Version:

1.0

Author:

Nico Danneberg (mail@danneberg.de)

See Also:

Serialized Form

Nested Class Summary

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

Canvas.AccessibleAWTCanvas

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

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

Field Summary

private boolean	active While the object is active, new flakes will occure.
private ThreadGroup	AllFlakes A group for all flakes is needed for calling common thread methods.
private boolean[][]	FixPoints An array for all fixed points at this screen.
private long	FlakeCounter A global flake's counter to create unique IDs.
private Vector<Flake>	Flakes The storage of all active flakes.
private Color	FontColor The color of the text.
private String[]	Messages The 3 lines of message that will be displayed.
private Image	Screen The screen all flakes are painting at.
static long	serialVersionUID Unique Id of this class.

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

Snow(String msg1, String msg2, String msg3, Color c)
Creates the new screen and initializes the text and color.

Method Summary

boolean[][]	getFixPoints() Reads reads the local array of all fixed points.
private void	initFixPoints() Initializes FixPoints by running through a raster of the complete screen and storing all point that are not of RGB( 0, 0, 0 ).
void	paint(Graphics g) Since the screen inherits from Canvas it has to know how to paint itself.
void	removeFlake(Flake f) When a flake reached a fixed point, it notifies this screen about this.
void	run() While the screen is active it created new flakes every 5ms at a random x-position.
void	stop() It stops the screen by setting active to false and interrupts all flakes.

Methods inherited from class java.awt.Canvas

addNotify, createBufferStrategy, createBufferStrategy, getAccessibleContext, getBufferStrategy, update

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, createVolatileImage, createVolatileImage, deliverEvent, disable, disableEvents, dispatchEvent, doLayout, enable, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getAlignmentX, getAlignmentY, getBackground, getBaseline, getBaselineResizeBehavior, getBounds, getBounds, getColorModel, getComponentAt, getComponentAt, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeys, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphics, getGraphicsConfiguration, getHeight, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getListeners, getLocale, getLocation, getLocation, getLocationOnScreen, getMaximumSize, getMinimumSize, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPeer, getPreferredSize, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getSize, getToolkit, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, invalidate, isBackgroundSet, isCursorSet, isDisplayable, isDoubleBuffered, isEnabled, isFocusable, isFocusCycleRoot, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isOpaque, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, layout, list, list, list, list, list, locate, location, lostFocus, minimumSize, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, paramString, postEvent, preferredSize, prepareImage, prepareImage, print, printAll, processComponentEvent, processEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removeNotify, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, reshape, resize, resize, setBackground, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setEnabled, setFocusable, setFocusTraversalKeys, setFocusTraversalKeysEnabled, setFont, setForeground, setIgnoreRepaint, setLocale, setLocation, setLocation, setMaximumSize, setMinimumSize, setName, setPreferredSize, setSize, setSize, setVisible, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle, validate

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

serialVersionUID

public static final long serialVersionUID

Unique Id of this class.

See Also:

Constant Field Values

active

private boolean active

While the object is active, new flakes will occure.

Flakes

private Vector<Flake> Flakes

The storage of all active flakes.

AllFlakes

private ThreadGroup AllFlakes

A group for all flakes is needed for calling common thread methods.

FlakeCounter

private long FlakeCounter

A global flake's counter to create unique IDs.

FixPoints

private boolean[][] FixPoints

An array for all fixed points at this screen.

Screen

private Image Screen

The screen all flakes are painting at.

Messages

private String[] Messages

The 3 lines of message that will be displayed.

FontColor

private Color FontColor

The color of the text.

Constructor Detail

Snow

public Snow(String msg1,
            String msg2,
            String msg3,
            Color c)

Creates the new screen and initializes the text and color. active is false right now.

Parameters:

msg1 - the 1^st line of the text

msg2 - the 2^nd line of the text

msg3 - the 3^rd line of the text

c - the Messages color

Method Detail

run

public void run()

While the screen is active it created new flakes every 5ms at a random x-position.

Specified by:

run in interface Runnable

stop

public void stop()

It stops the screen by setting active to false and interrupts all flakes.

paint

public void paint(Graphics g)

Since the screen inherits from Canvas it has to know how to paint itself. Here the text is written and the FixPoints are initialized.

Overrides:

paint in class Canvas

Parameters:

g - the graphics object

removeFlake

public void removeFlake(Flake f)

When a flake reached a fixed point, it notifies this screen about this. The flake will be removed from AllFlakes, and the new fixed point is stored locally and is given to every falling flake calling method Flake.addFixPoint(int, int).

Parameters:

f - the flake to remove

See Also:

Flake.addFixPoint(int, int)

getFixPoints

public boolean[][] getFixPoints()

Reads reads the local array of all fixed points.

Returns:

FixPoints

initFixPoints

private void initFixPoints()

Initializes FixPoints by running through a raster of the complete screen and storing all point that are not of RGB( 0, 0, 0 ).