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Class jotsa.JotsaAnimationApplet

java.lang.Object
   |
   +----java.awt.Component
           |
           +----java.awt.Container
                   |
                   +----java.awt.Panel
                           |
                           +----java.applet.Applet
                                   |
                                   +----jotsa.JotsaAnimationApplet

public class JotsaAnimationApplet

extends Applet

Version:

0.886 Last modified August 17, 1997

current_level

fix_java_arc_bug

JotsaBackGC

JotsaBackGround

JotsaBackgroundImagelist

JotsaCanvases

JotsaClearBackGC

JotsaClearBackGround

JotsaDefaultCanvas

JotsaImagelist

JotsaLog

JotsaPopupWindows

JotsaScaledWindows

JotsaShowPopupWindows

JotsaShowScaledWindows

JotsaTempGC

JotsaTempimage

JotsaVersion

JotsaVersionDate

JotsaVersionMajor

JotsaVersionMinor

JotsaVtime

last_display_time

OBJECT_FINISHED_EVENT

scheduler

sizex

sizey

JotsaAnimationApplet()

action(Event, Object)

This method handles some default buttons.

display_code_name_change(String, String)

display_obsolete_code(String)

init()

The applet should execute super.init() to inialize the JOTSA data structures.

JotsaAddToVirtualTime(int)

Add the given number of milliseconds to the virtual time.

JotsaAllPopupsChosen()

This is called when all popups are chosen.

JotsaChangeParameters()

This is called when a JOTSA widget changes a parameter.

JotsaChangeParameters(int, Object)

JotsaClearVirtualTime()

This sets the virtual time to zero.

JotsaDebugTimers()

This is a debugging routine and is not supported.

JotsaDisplayCanvases()

This is called by the default paint method to display all JOTSA canvases.

JotsaDrawAll()

JotsaDrawAll(long)

This draws all objects fot the default canvas.

JotsaDrawAllClip(long)

Clipping is not supported at this time.

JotsaDrawAllScaledWindow(double, int, int, Graphics)

This is obsloete.

JotsaDrawBackground()

This is obsolete.

JotsaDrawImage(Graphics)

This is obsolete.

JotsaDrawScaledBackground(double, int, int, Graphics)

This is obsolete.

JotsaForceRedisplay()

Force a redisplay of the screen as soon as possible.

JotsaForceRedisplay(int)

Force a redisplay of the screen as soon as possible.

JotsaGetObject(int)

Return the object from the default canvas with the given key.

JotsaGetObjectAt(int)

Return the object from the default canvas which is at the given position in the list of objects to be displayed.

JotsaGetRemainingTime(int)

Return the time remaining on the timer with the given key
or -1 if there is no active timer with this key.

JotsaGetVirtualTime()

Return the current virtual time.

JotsaGetVirtualTime(long)

Return the virtual time corresponding to the given current time.

JotsaHandleCanvasAction(Event, Object)

This method is currently not supported.

JotsaHandleCanvasAction(Event, Object, JotsaCanvas)

This method is currently not supported.

JotsaHandleCanvasEvent(Event)

This is called by a JotsaCanvas when an event occurs.

JotsaHandleCanvasEvent(Event, JotsaCanvas)

This is called by a JotsaCanvas when an event occurs.

JotsaInhibitDisplay()

JotsaInhibitDisplayOff()

JotsaInhibitDisplayTest()

JotsaInitImages()

Initialize the JOTSA images for the default canvas.

JotsaInsertCanvas(JotsaCanvas)

Insert the canvas into the list of canvases to be displayed.

JotsaInsertIntoBackground(JotsaAnimationObject)

JotsaInsertObject(JotsaAnimationObject)

Insert the object in the list of objects for the JotsaDefaultCanvas.

JotsaInsertObject(JotsaAnimationObject, JotsaCanvas)

Insert the object in the last of objects for the given canvas.

JotsaLastDisplayTime()

Return the virtual time of the last display.

JotsaMakePopupWindow(String, int, int)

Make a new popup window.

JotsaMakePopupWindow(String, int, int, boolean)

Make a new popup window.

JotsaMakeScaledWindow(String, int, int)

This method is obsolete and will be replaced.

JotsaMoveAllIntoBackground()

JotsaMoveIntoBackground(JotsaAnimationObject)

JotsaMovieSpecialModeClear()

JotsaMovieSpecialModeGet()

JotsaMovieSpecialModeSet()

JotsaNextLevel()

Return the level number of the next object.

JotsaNotifyIfNecessary()

Notify all threads of pending notifications

JotsaNumObjects()

Return the number of objects in the list for the default canvas.

JotsaPaintCanvas(Graphics)

Allow the overriding of the paint method for the default canvas.

JotsaPaintCanvas(Graphics, JotsaCanvas)

Allow the overriding of the paint method for any canvas.

JotsaPaintEnd()

This is called at the end of the default paint method after all other drawing methods have been called.

JotsaPaintLocal(long)

This is called by the default paint method before drawing any of the canvases.

JotsaPaintLocal(long, JotsaCanvas)

This is called by the default paint method of each canvas before drawing and objects.

JotsaPaintStart()

This is called at the start of the default paint method before any other drawing methods have been called.

JotsaPaintTime()

Return the virtual time that the last paint was entered.

JotsaPause()

Do not automatically restart time when the browser revisits this page.

JotsaPopupChosen(JotsaPopupWindow)

This is called when a particular popup is chosen.

JotsaRecreateBackground()

This is called to recreate the backgound image of the default canvas.

JotsaRemoveAllObjects()

Remove all objects corresponding to the default canvas.

JotsaRemoveCanvas(JotsaCanvas)

Remove the canvas from the list of canvases to be displayed.

JotsaRemoveObject(int)

Remove a particular object from the list of objects displayed for the default canvas.

JotsaRemoveObject(JotsaAnimationObject)

Remove a particular object from the list of objects displayed for the default canvas.

JotsaRemovePopupWindow(String)

Remove a given popup window.

JotsaRemoveScaledWindow(String)

Remove a given scaled window from the default canvas.

JotsaRemoveTimerGivenKey(int)

Remove a given timer.

JotsaResetAllToFinal()

JotsaRestartTime()

Restart the virtual time that was stopped with JotsaStopTime.

JotsaSetBackground(Color)

Set the background color of the default canvas.

JotsaSetBackgroundSkip(int)

JotsaSetDefaultSleepTime(int)

Set the default sleep time in milliseconds.

JotsaSetDisplayCodeNameChange(boolean)

JotsaSetDisplayCodeNameChangeOne(boolean)

JotsaSetDisplayObsolete(boolean)

JotsaSetDisplayObsoleteOne(boolean)

JotsaSetFixJavaArcBug(boolean)

This method has not yet been implemented.

JotsaSetMovieFrameTime(double)

Set to repaint the screen at a fixed rate independent of the motion of objects.

JotsaSetRate(double)

Set the rate at which virtual time moves.

JotsaSetTimeout(int, int, JotsaWaitingThread)

Set a timer to notify a thread at a later time.

JotsaSetTimeout(int, int, Object, JotsaWaitingThread)

Set a timer to notify a thread at a later time.

JotsaSetWakeupDelay(int)

This is the smallest time interval that can be handled by the virutal time.

JotsaShowNames()

JotsaSpecialDisplayModeClear()

JotsaSpecialDisplayModeGet()

JotsaSpecialDisplayModeSet()

JotsaStartLogger(String, String)

JotsaStopTime()

Stop the virtual time.

JotsaTerminateAll()

Terminate all objects associated with the default canvas.

JotsaUpdateAll(long)

JotsaUpdateSleep()

JotsaWriteBackgroundLine(int, int, int, int, Color)

Draw a line in the background of the default canvas.

JotsaWriteBackgroundString(String, int, int, Color)

Draw a string in the background of the default canvas.

paint(Graphics)

This is the default paint method>

repaint_clip()

This is currently not supported.

repaint_full()

This is currently not supported.

ShowObjects()

ShowTimingStats()

ShowTimingStats(int)

start()

This is the start method for the applet.

stop()

This is the stop method for the applet.

update(Graphics)

The default update just calls paint without redrawing the background.

  protected Image JotsaBackGround

  protected Image JotsaClearBackGround

  protected Graphics JotsaBackGC

  protected Graphics JotsaClearBackGC

  public Image JotsaTempimage

  protected Graphics JotsaTempGC

  protected final String JotsaVersion

  protected JotsaVirtualTime JotsaVtime

  public final int JotsaVersionMajor

  public final int JotsaVersionMinor

  public final String JotsaVersionDate

  public Vector JotsaScaledWindows

  public Vector JotsaPopupWindows

  public Vector JotsaCanvases

  public long last_display_time

  public int sizex

  public int sizey

  public Choice JotsaShowScaledWindows

  public Choice JotsaShowPopupWindows

  public int current_level

  public int OBJECT_FINISHED_EVENT

  public JotsaLogger JotsaLog

  protected boolean fix_java_arc_bug

  protected JotsaScheduler scheduler

  protected JotsaAnimationObjectList JotsaImagelist

  protected JotsaAnimationObjectList JotsaBackgroundImagelist

  public JotsaCanvas JotsaDefaultCanvas

  public JotsaAnimationApplet()

  public boolean action(Event e,
                        Object arg)

This method handles some default buttons.

Overrides:

action in class Component

  public void init()

The applet should execute super.init() to inialize the JOTSA data structures.

Overrides:

init in class Applet

  public void JotsaAddToVirtualTime(int millisec)

Add the given number of milliseconds to the virtual time.

Parameters:

millsec - The number of milliseconds to add to the virtual time

  public void JotsaAllPopupsChosen()

This is called when all popups are chosen.
It should be overridden if the applet want to take some action when the occurs.

  public void JotsaChangeParameters()

This is called when a JOTSA widget changes a parameter.
It should be overridden if the applet must take some action when this happens.

  public void JotsaChangeParameters(int key,
                                    Object obj)

  public void JotsaClearVirtualTime()

This sets the virtual time to zero.

  public void JotsaDebugTimers()

This is a debugging routine and is not supported.

  public void JotsaDisplayCanvases()

This is called by the default paint method to display all JOTSA canvases.

  public void JotsaDrawAll(long timenow)

This draws all objects fot the default canvas.
It is obsolete and JotsaDisplayCanvases should be used instead.

See Also:

JotsaDisplayCanvases

  public void JotsaDrawAllClip(long timenow)

Clipping is not supported at this time.

  public void JotsaDrawAllScaledWindow(double scale,
                                       int xoff,
                                       int yoff,
                                       Graphics g)

This is obsloete.

See Also:

JotsaDisplayCanvases

  public void JotsaDrawBackground()

This is obsolete.

See Also:

JotsaDisplayCanvases

  public void JotsaDrawImage(Graphics g)

This is obsolete.

See Also:

JotsaDisplayCanvases

  public void JotsaDrawScaledBackground(double scale,
                                        int xoff,
                                        int yoff,
                                        Graphics g)

This is obsolete.

See Also:

JotsaDisplayCanvases

  public void JotsaForceRedisplay()

Force a redisplay of the screen as soon as possible.

  public void JotsaForceRedisplay(int n)

Force a redisplay of the screen as soon as possible.

  public JotsaAnimationObject JotsaGetObject(int key)

Return the object from the default canvas with the given key.

Parameters:

key - The key of the object to return

Returns:

The object with the given key or null is none exists.

  public JotsaAnimationObject JotsaGetObjectAt(int which)

Return the object from the default canvas which is at the given position in the list of objects to be displayed.

Parameters:

i - The index of the object to be returned.

Returns:

The object from the default canvas

  public int JotsaGetRemainingTime(int key)

Return the time remaining on the timer with the given key
or -1 if there is no active timer with this key.

Parameters:

key - The key for the timer.

Returns:

The virtual time remaining in milliseconds

  public long JotsaGetVirtualTime()

Return the current virtual time.

Returns:

The current virtual time in milliseconds

  public long JotsaGetVirtualTime(long n)

Return the virtual time corresponding to the given current time.

Returns:

The current virtual time in milliseconds

  public boolean JotsaHandleCanvasAction(Event e,
                                         Object arg)

This method is currently not supported.

  public boolean JotsaHandleCanvasAction(Event e,
                                         Object arg,
                                         JotsaCanvas can)

This method is currently not supported.

  public boolean JotsaHandleCanvasEvent(Event e)

This is called by a JotsaCanvas when an event occurs.
If it returns false (the default) then
JotsaHandleCanvasEvent(Event e, JotsaCanvas can) is called.
Override this if you are only using the default canvas and you need to capture events.

Parameters:

e - The event from HandleEvent

Returns:

true if this handled the event and false otherwise

  public boolean JotsaHandleCanvasEvent(Event e,
                                        JotsaCanvas can)

This is called by a JotsaCanvas when an event occurs.

  public void JotsaInitImages()

Initialize the JOTSA images for the default canvas.
This should be called after a layout containing the JotsaDefaultCanvas has been set up and validated.

See Also:

validate

  public void JotsaInsertCanvas(JotsaCanvas can)

Insert the canvas into the list of canvases to be displayed.
The JotsaDefaultCanvas is automatically inserted into this list by init.

Parameters:

can - The canvas to insert

See Also:

JotsaRemoveCanvas

  public void JotsaInsertIntoBackground(JotsaAnimationObject obj)

  public void JotsaInsertObject(JotsaAnimationObject obj)

Insert the object in the list of objects for the JotsaDefaultCanvas.

Parameters:

obj - The object to insert

  public void JotsaInsertObject(JotsaAnimationObject obj,
                                JotsaCanvas can)

Insert the object in the last of objects for the given canvas.

Parameters:

obj - The object to insert

can - The canvas to insert the object in

  public long JotsaLastDisplayTime()

Return the virtual time of the last display.

Returns:

The virtual time (in milliseconds) of the last display

  public JotsaPopupWindow JotsaMakePopupWindow(String str,
                                               int xsize,
                                               int ysize)

Make a new popup window.

Parameters:

str - The name of the window

xsize - The number of pixels in the x-dimension for the window

ysize - The number of pixels in the y-dimension for the window

Returns:

The new popup window

  public JotsaPopupWindow JotsaMakePopupWindow(String str,
                                               int xsize,
                                               int ysize,
                                               boolean show)

Make a new popup window.

Parameters:

str - The name of the window

xsize - The number of pixels in the x-dimension for the window

ysize - The number of pixels in the y-dimension for the window

show - If true, the window is shown, otherwise, it is hidden

Returns:

The new popup window

  public JotsaScaledWindow JotsaMakeScaledWindow(String str,
                                                 int xsize,
                                                 int ysize)

This method is obsolete and will be replaced.

  public int JotsaNextLevel()

Return the level number of the next object. Each time this is called it returns a new level number.

Returns:

The next level number to use

  public void JotsaNotifyIfNecessary()

Notify all threads of pending notifications

  public int JotsaNumObjects()

Return the number of objects in the list for the default canvas.

Returns:

The number of objects for the default canvas

  public boolean JotsaPaintCanvas(Graphics g)

Allow the overriding of the paint method for the default canvas.
Each canvas calls JotsaPaintCanvas(Graphics g, JotsaCanvas can) in its paint method. If this returns false the default paint mehtod is used. If it returns true no other action is taken by the canvas's paint method.
By default, JotsaPaintCanvas(Graphics g, JotsaCanvas can) calls JotsaPaintCanvas(Graphics g) and returns its return value, which by default is false.
If JotsaPaintCanvas(Graphics g) is overridden and returns true, the overriding method must handle all painting in all canvases.
Since no information is provided as to the canvas, it is useful only when the default canvas is the only one used.

Parameters:

g - The graphics context passed to paint

Returns:

false, by default, means that the canvas handles its onwn paint
true if the canvas is not to handle its own paint.

  public boolean JotsaPaintCanvas(Graphics g,
                                  JotsaCanvas can)

Allow the overriding of the paint method for any canvas.
Each canvas calls JotsaPaintCanvas(Graphics g, JotsaCanvas can) in its paint method. If this returns false the default paint mehtod is used. If it returns true no other action is taken by the canvas's paint method.
By default, JotsaPaintCanvas(Graphics g, JotsaCanvas can) calls JotsaPaintCanvas(Graphics g) and returns its return value, which by default is false.
Overriding JotsaPaintCanvas(Graphics g, JotsaCanvas can) allows the applet to tkae some action either before or instead of the paint method used by a canvas.

Parameters:

g - The graphics context passed to paint

can - The canvas whose paint method was entered

Returns:

false, by default, means that the canvas handles its onwn paint
true if the canvas is not to handle its own paint.

  public void JotsaPaintEnd()

This is called at the end of the default paint method after all other drawing methods have been called.

  public void JotsaPaintLocal(long ldt)

This is called by the default paint method before drawing any of the canvases.
By default, it does nothing. It can be overridden tp customize paint.

Parameters:

ldt - The virtual time of the last display

  public void JotsaPaintLocal(long ldt,
                              JotsaCanvas can)

This is called by the default paint method of each canvas before drawing and objects. By default, it does nothing. It can be overridden tp customize paint.

Parameters:

ldt - The virtual time of the last display

can - The canves that called this function

  public void JotsaPaintStart()

This is called at the start of the default paint method before any other drawing methods have been called.

  public long JotsaPaintTime()

Return the virtual time that the last paint was entered. return Last virtual time that paint was called

  public void JotsaPause()

Do not automatically restart time when the browser revisits this page.

  public void JotsaPopupChosen(JotsaPopupWindow win)

This is called when a particular popup is chosen.
It should be overridden if the applet want to take some action when the occurs.

Parameters:

win - The popup window that was chosen

  public void JotsaRecreateBackground()

This is called to recreate the backgound image of the default canvas.
For efficiency, the objects in the background are not redrawn each time.
Instead, an image containing all background objects is made and this image is drawn as the background.
Use JotsaRecreateBackground to remake this background image when a background object changes.

  public void JotsaRemoveAllObjects()

Remove all objects corresponding to the default canvas.
Background objects are not removed.

See Also:

JotsaRemoveObject

  public void JotsaRemoveCanvas(JotsaCanvas can)

Remove the canvas from the list of canvases to be displayed.

Parameters:

can - The canvas to remove

See Also:

JotsaInsertCanvas

  public void JotsaRemoveObject(int key)

Remove a particular object from the list of objects displayed for the default canvas.

Parameters:

key - The key of the object to be removed.

See Also:

JotsaRemoveAllObjects

  public void JotsaRemoveObject(JotsaAnimationObject obj)

Remove a particular object from the list of objects displayed for the default canvas.

Parameters:

obj - The object to be removed.

See Also:

JotsaRemoveAllObjects

  public void JotsaRemovePopupWindow(String str)

Remove a given popup window.

Parameters:

str - The name of the popup window to remove

See Also:

JotsaMakePopupWindow

  public void JotsaRemoveScaledWindow(String str)

Remove a given scaled window from the default canvas.

Parameters:

str - The name of the scaled window to remove

See Also:

JotsaMakeScaledWindow

  public void JotsaRemoveTimerGivenKey(int key)

Remove a given timer.
Timers are created with JotsaSetTimeout

See Also:

JotsaSetTimeout

  public void JotsaRestartTime()

Restart the virtual time that was stopped with JotsaStopTime.

See Also:

JotsaStopTime

  public void JotsaSetBackground(Color c)

Set the background color of the default canvas.

Parameters:

c - The color for the background of the default canvas

  public void JotsaSetDefaultSleepTime(int millisec)

Set the default sleep time in milliseconds.
This is the time between redisplays when no object is moving

Parameters:

millsec - The number of milliseconds to sleep

  public void JotsaSetMovieFrameTime(double frame_time)

Set to repaint the screen at a fixed rate independent of the motion of objects.
The mode is turned off by setting this time to 0.0.

Parameters:

frame_time - The time between redisplays

  public void JotsaMovieSpecialModeSet()

  public void JotsaMovieSpecialModeClear()

  public boolean JotsaMovieSpecialModeGet()

  public void JotsaSpecialDisplayModeSet()

  public void JotsaSpecialDisplayModeClear()

  public int JotsaSpecialDisplayModeGet()

  public void JotsaSetRate(double r)

Set the rate at which virtual time moves.
If this is 1.0, virtual time moves at the same rate as real time.
If this value is greater than 1, virtual time moves faster than real time.
If this value is smaller than 1, virtual time moves slower than real time.

Parameters:

r - New virtual time rate

See Also:

JotsaStopTime

  public void JotsaSetTimeout(int timeout,
                              int key,
                              JotsaWaitingThread w)

Set a timer to notify a thread at a later time.

Parameters:

timout - The number of milliseconds of virtual time until the timeout occurs

key - A key for use in remooving this timer

w - The thread to notify when the timer expires

  public void JotsaSetTimeout(int timeout,
                              int key,
                              Object obj,
                              JotsaWaitingThread w)

Set a timer to notify a thread at a later time.

Parameters:

timout - The number of milliseconds of virtual time until the timeout occurs

key - A key for use in remooving this timer

w - The thread to notify when the timer expires

obj - Additional information to pass to the waiting thread

  public void JotsaSetWakeupDelay(int millisec)

This is the smallest time interval that can be handled by the virutal time.

Parameters:

millisec - The number of milliseconds for the virtual timer to sleep

  public void JotsaStopTime()

Stop the virtual time.
All all objects will stop moving.

See Also:

JotsaRestartTime

  public void JotsaTerminateAll()

Terminate all objects associated with the default canvas.
This causes them to notify their waiting threads.

  public JotsaAnimationObject JotsaWriteBackgroundLine(int x1,
                                                       int y1,
                                                       int x2,
                                                       int y2,
                                                       Color C)

Draw a line in the background of the default canvas.

Parameters:

x1 - The x-coordinate of the first endpoint of the line

y1 - The y-coordinate of the first endpoint of the line

x2 - The x-coordinate of the second endpoint of the line

y2 - The y-coordinate of the second endpoint of the line

C - The color of the line

See Also:

JotsaWriteBackgroundString

  public JotsaAnimationObject JotsaWriteBackgroundString(String str,
                                                         int x,
                                                         int y,
                                                         Color C)

Draw a string in the background of the default canvas.

Parameters:

str - The string to draw

x - The x-coordinate of the lower left corner of the string

y - The y-coordinate of the lower left corner of the string

C - The color of the string

  public void paint(Graphics g)

This is the default paint method>

Parameters:

g - The graphics context for painting the screen

Overrides:

paint in class Component

  public void repaint_clip()

This is currently not supported.

  public void repaint_full()

This is currently not supported.

  public void JotsaUpdateAll(long timenow)

  public int JotsaUpdateSleep()

  public void JotsaDrawAll()

  public void start()

This is the start method for the applet.
It restarts the master thread used for timing.

Overrides:

start in class Applet

  public void stop()

This is the stop method for the applet.
It stops the time and kills the master thread used for timing.

Overrides:

stop in class Applet

  public void update(Graphics g)

The default update just calls paint without redrawing the background.

Parameters:

g - The graphics context for painting the screen.

Overrides:

update in class Component

  public void ShowTimingStats()

  public void ShowTimingStats(int n)

  public void ShowObjects()

  public void JotsaResetAllToFinal()

  public void JotsaMoveIntoBackground(JotsaAnimationObject obj)

  public void JotsaMoveAllIntoBackground()

  public void JotsaShowNames()

  public void JotsaInhibitDisplay()

  public void JotsaInhibitDisplayOff()

  public void JotsaSetBackgroundSkip(int n)

  public boolean JotsaInhibitDisplayTest()

  public void JotsaSetDisplayObsolete(boolean flg)

  public void JotsaSetDisplayObsoleteOne(boolean flg)

  public void JotsaSetDisplayCodeNameChange(boolean flg)

  public void JotsaSetDisplayCodeNameChangeOne(boolean flg)

  public void JotsaSetFixJavaArcBug(boolean flg)

This method has not yet been implemented.

  protected void display_obsolete_code(String str)

  protected void display_code_name_change(String str1,
                                          String str2)

  public void JotsaStartLogger(String name,
                               String fn)

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