krut.KRUT_GUI
Class SnapShot

java.lang.Object
  java.lang.Thread
      krut.KRUT_GUI.SnapShot

All Implemented Interfaces:

java.lang.Runnable

public class SnapShot
extends java.lang.Thread

This class is used to show a snapshot. Originally the snapshot was only used to show a single screenshot; however it was later expanded to include the preview window. The new methods (the preview related ones) use the old methods for initialization. This update was done more like a hack than as a restructuring, and the readability of the code suffered. This should be worked on. The original code for showing just a screenshot is found in the snapshot-related methods in RunKRUT and ScreenGrabber, and the new calls for updating the preview window are made from the run method in the ScreenGrabber class.

Nested Class Summary

class

SnapShot.ShowPic This class shows the image.

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

java.lang.Thread.State, java.lang.Thread.UncaughtExceptionHandler

Field Summary

javax.swing.JFrame	previewFrame The JFrame used to show the animation of the film as it records.
int	sleepMillis This is the amount of milliseconds to sleep between each update of the window.

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

SnapShot()

Method Summary

void	createAndShowGUI(javax.swing.JFrame frame, java.awt.image.BufferedImage image) Show a new image in a new SnapShot window.
void	initPreviewWindow(int width, int height) Initializes and shows the preview window, displaying a new BufferedImage.
java.awt.Image	loadPic(java.lang.String fileName, java.awt.Component comp) Load a picture from file into an Image
void	run() As long as the isRunning parameter is true, the present method sleeps an amount of time determined by the sleepMillis parameter.
void	setFps(int fps) Changes the update frequency of the preview window.
void	stopPreviewWindow() Closes the preview window and free system resources.
void	updatePreviewImage(java.awt.image.BufferedImage nextImage) Update the image in the preview window.

Methods inherited from class java.lang.Thread

activeCount, checkAccess, 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

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

Field Detail

previewFrame

public javax.swing.JFrame previewFrame

The JFrame used to show the animation of the film as it records.

sleepMillis

public int sleepMillis

This is the amount of milliseconds to sleep between each update of the window. The window will only update if updatePreviewImage has been called since the last update.

Constructor Detail

SnapShot

public SnapShot()

Method Detail

run

public void run()

As long as the isRunning parameter is true, the present method sleeps an amount of time determined by the sleepMillis parameter. After sleeping, the updateImage method is called if the imageUpdated parameter is true. Then the present method sleeps again.

Specified by:

run in interface java.lang.Runnable

Overrides:

run in class java.lang.Thread

loadPic

public java.awt.Image loadPic(java.lang.String fileName,
                              java.awt.Component comp)
                       throws java.lang.OutOfMemoryError

Load a picture from file into an Image

Parameters:

fileName - The name of the file containing the picture

comp - A component (like the frame where the image should be drawn) to use for the MediaTracker.

Returns:

The Image.

Throws:

java.lang.OutOfMemoryError

initPreviewWindow

public void initPreviewWindow(int width,
                              int height)

Initializes and shows the preview window, displaying a new BufferedImage.

Parameters:

width - The width of the preview window.

height - The height of the preview window.

setFps

public void setFps(int fps)

Changes the update frequency of the preview window.

Parameters:

fps - The update frequency given as updates per second.

stopPreviewWindow

public void stopPreviewWindow()

Closes the preview window and free system resources.

updatePreviewImage

public void updatePreviewImage(java.awt.image.BufferedImage nextImage)

Update the image in the preview window. The actual updating of the image seen in the window is done by the run method.

Parameters:

nextImage - The BufferedImage that should be shown in the preview window at the next update.

createAndShowGUI

public void createAndShowGUI(javax.swing.JFrame frame,
                             java.awt.image.BufferedImage image)
                      throws java.lang.OutOfMemoryError

Show a new image in a new SnapShot window.

Parameters:

frame - The frame to show the image in.

image - The image.

Throws:

java.lang.OutOfMemoryError