de.lmu.ifi.dbs.elki.visualization.visualizers.thumbs

Class ThumbnailThread

java.lang.Object

java.lang.Thread

de.lmu.ifi.dbs.elki.visualization.visualizers.thumbs.ThumbnailThread

All Implemented Interfaces:

Runnable

public class ThumbnailThread
extends Thread

Thread to render thumbnails in the background.

Author:

Erich Schubert

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	ThumbnailThread.Listener Listener interface for completed thumbnails.
static class	ThumbnailThread.Task A single thumbnailer task.

Nested classes/interfaces inherited from class java.lang.Thread

Thread.State, Thread.UncaughtExceptionHandler

Field Summary

Fields

Modifier and Type	Field and Description
private Queue<ThumbnailThread.Task>	queue Queue of thumbnails to generate.
private boolean	shutdown Flag to signal shutdown.
private static ThumbnailThread	THREAD The static thumbnail thread.

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

Constructors

Constructor and Description
ThumbnailThread()

Method Summary

Methods

Modifier and Type	Method and Description
private void	generateThumbnail(ThumbnailThread.Task ti) Generate a single Thumbnail.
static ThumbnailThread.Task	QUEUE(ThumbnailThread.Listener callback) Queue a thumbnail task in a global thumbnail thread.
private void	queue(ThumbnailThread.Task task) Queue a new thumbnail task.
void	run()
private void	shutdown() Set the shutdown flag.
static void	SHUTDOWN() Shutdown the thumbnailer thread.
static void	UNQUEUE(ThumbnailThread.Task task) Remove a pending task from the queue.

Methods inherited from class java.lang.Thread

activeCount, checkAccess, clone, countStackFrames, currentThread, destroy, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, stop, suspend, toString, yield

Methods inherited from class java.lang.Object

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

Field Detail

queue

private Queue<ThumbnailThread.Task> queue

Queue of thumbnails to generate.

shutdown

private boolean shutdown

Flag to signal shutdown.

THREAD

private static ThumbnailThread THREAD

The static thumbnail thread.

Constructor Detail

ThumbnailThread

public ThumbnailThread()

Method Detail

QUEUE

public static ThumbnailThread.Task QUEUE(ThumbnailThread.Listener callback)

Queue a thumbnail task in a global thumbnail thread.

Parameters:

callback - Callback

UNQUEUE

public static void UNQUEUE(ThumbnailThread.Task task)

Remove a pending task from the queue.

Parameters:

task - Task to remove.

SHUTDOWN

public static void SHUTDOWN()

Shutdown the thumbnailer thread.

queue

private void queue(ThumbnailThread.Task task)

Queue a new thumbnail task.

Parameters:

task - Thumbnail task

generateThumbnail

private void generateThumbnail(ThumbnailThread.Task ti)

Generate a single Thumbnail.

Parameters:

ti - Visualization task

run

public void run()

Specified by:

run in interface Runnable

Overrides:

run in class Thread

shutdown

private void shutdown()

Set the shutdown flag.