Class Sequencer
- java.lang.Object
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- java.lang.Thread
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- org.htmlparser.lexerapplications.thumbelina.Sequencer
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- All Implemented Interfaces:
java.lang.Runnable
public class Sequencer extends java.lang.Thread
Display received images at a constant rate.
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Field Summary
Fields Modifier and Type Field Description protected static int
DEFAULT_DELAY
The default delay time, 500 milliseconds.protected boolean
mActive
Activity state.protected int
mDelay
Delay between picture displays.protected java.util.ArrayList
mPending
Pictures awaiting display.protected java.util.Random
mRandom
Random number generator for picture placement.protected Thumbelina
mThumbelina
The thumbelina object to drive.
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Constructor Summary
Constructors Constructor Description Sequencer(Thumbelina thumbelina)
Creates a new instance of a Sequencer.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
add(java.awt.Image image, java.net.URL url)
Add an image to the pending list.void
add(java.awt.Image image, java.net.URL url, boolean background)
Add an image to the panel.int
getDelay()
Getter for property delay.protected void
place(Picture picture, boolean add)
Place a picture in the display area.protected java.awt.Point
random(java.lang.String url, int width, int height)
Compute a random point to load the image.void
reset()
Clears the pending images list.void
run()
Display pictures from pending list with delay between.void
setDelay(int delay)
Setter for property delay.-
Methods inherited from class java.lang.Thread
activeCount, checkAccess, clone, countStackFrames, currentThread, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, onSpinWait, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, suspend, toString, yield
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Field Detail
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DEFAULT_DELAY
protected static final int DEFAULT_DELAY
The default delay time, 500 milliseconds.- See Also:
- Constant Field Values
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mThumbelina
protected Thumbelina mThumbelina
The thumbelina object to drive.
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mPending
protected java.util.ArrayList mPending
Pictures awaiting display.
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mActive
protected boolean mActive
Activity state.true
means fetching and displaying,false
not.
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mDelay
protected int mDelay
Delay between picture displays.
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mRandom
protected java.util.Random mRandom
Random number generator for picture placement.
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Constructor Detail
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Sequencer
public Sequencer(Thumbelina thumbelina)
Creates a new instance of a Sequencer.- Parameters:
thumbelina
- The object to push images to.
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Method Detail
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reset
public void reset()
Clears the pending images list.
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random
protected java.awt.Point random(java.lang.String url, int width, int height)
Compute a random point to load the image. Generate a random point for one of the corners of the image and then condition the numbers so the image is on screen.- Parameters:
url
- The url this picture was fetched from. Used in computing the random position, so the picture is always placed in the same location, even when refetched.width
- The width of the image.height
- The height of the image.- Returns:
- The random point to use.
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add
public void add(java.awt.Image image, java.net.URL url)
Add an image to the pending list.- Parameters:
image
- The image to add.url
- The url the image came from.
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add
public void add(java.awt.Image image, java.net.URL url, boolean background)
Add an image to the panel.- Parameters:
image
- The image to add.url
- The url the image came from.background
- Iftrue
, just add to pending list.
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place
protected void place(Picture picture, boolean add)
Place a picture in the display area. Places the picture at a random location on screen.- Parameters:
picture
- The picture to place on screen.add
- Iftrue
, the picture is added to the history.
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run
public void run()
Display pictures from pending list with delay between. If the list is empty it waits on the pending list for new pictures.- Specified by:
run
in interfacejava.lang.Runnable
- Overrides:
run
in classjava.lang.Thread
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getDelay
public int getDelay()
Getter for property delay.- Returns:
- Value of property delay.
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setDelay
public void setDelay(int delay)
Setter for property delay.- Parameters:
delay
- New value of property delay.
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