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HwBasicUserPlugIn.java
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1997-01-24
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package kinetix.hyperc1.runtime;
/********************************************************************************\
** **
** (C) Copyright 1997 by Autodesk, Inc. **
** **
** This program is copyrighted by Autodesk, Inc. and is licensed to you under **
** the following conditions. You may not distribute or publish the source **
** code of this program in any form. You may incorporate this code in object **
** form in derivative works provided such derivative works are (i.) are de- **
** signed and intended to work solely with Autodesk, Inc. products, and (ii.) **
** contain Autodesk's copyright notice "(C) Copyright 1997 by Autodesk, Inc." **
** **
** AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS. AUTODESK SPE- **
** CIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR **
** A PARTICULAR USE. AUTODESK, INC. DOES NOT WARRANT THAT THE OPERATION OF **
** THE PROGRAM WILL BE UNINTERRUPTED OR ERROR FREE. **
** **
\********************************************************************************/
import java.applet.Applet;
import java.awt.Event;
/******************************************************************************\
** **
** Class: HwBasicUserPlugIn **
** Purpose: **
** Base class for user added plugins. **
** **
\******************************************************************************/
public class HwBasicUserPlugIn extends HwBasicPlugIn
{
/** piEventAppletInit **
* Called by the system when the applet
* containing the plug-in is initialized (sent
* init() message).
*/
public void piEventAppletInit(Applet theApplet)
throws HwException
{}
/** piEventAppletDestroy **
* Called by the system when the applet
* is about to be destroyed. The plug-in should release
* any resources which need to be released
*/
public void piEventAppletDestroy(Applet theApplet)
throws HwException
{}
/** piEventAppletStart **
* Called by the system when the applet
* containing the plug-in is becomes visible.
*/
public void piEventAppletStart(Applet theApplet)
throws HwException
{}
/** piEventAppletStop **
* Called by the system when the applet
* containing the plug-in is no longer visible.
*/
public void piEventAppletStop(Applet theApplet)
throws HwException
{}
/** piGetRunService **
* Called by the plug-in to get access to the system
* services. The plug-in should return the run service
* received in the piInit( method
*/
public BasicRunService piGetRunService()
{
return super.piGetRunService();
}
/** piInit **
* Called by the system just after the plug-in is created
* The implementation should:
* (1) Save the run service in an instance variable
* (2) Create the necessary data structures to save the static
* authored properties unique to the plug-in and the
* corresponding dynamic copy of the properties for run-time
* (3) piInit(ialize the static properties of the plug-in
* from the piInit(ialProperties parameter
*/
public void piInit(BasicRunService aRunService)
throws HwException
{
super.piInit(aRunService);
}
/** piIsContainer **
* Return true if the plug-in is a container, false otherwise
*/
public boolean piIsContainer()
{
return false;
}
/** piIsVisual **
* Return true if the plug-in is visual, falst otherwise
*/
public boolean piIsVisual()
{
return false;
}
/** piEventParentMovedBy **
* Called by the system when the immediate parent of the
* plug-in has been moved. The plug-in should update its
* appearance and internal state accordingly. This method is
* called before the bounding rectangle of the plug-in has
* been translated by the system. It is primarily for plug-ins
* which do not rely on piDraw to draw themselves
*/
public void piEventParentMovedBy(VisualRunPlugIn aParent, int xOffset, int yOffset)
throws HwException
{}
/** piRestoreInitialRunState **
* Called by the system when it is necessary to re-piInit(ialize
* transient run-time properties unique to the plug-in which
* are not also stored as static authored properties
*/
public void piRestoreInitialRunState()
throws HwException
{}
/** piEventRefreshDaemonTick **
* Now is the when we dance. Called by the system when a
* refresh daemon tick occurs.
* timeNow is the tick time, in milliseconds.
*/
public void piEventRefreshDaemonTick(long timeNow, RefreshDaemon worldMover)
throws HwException
{}
/** piPerformUserPort **
* Called by the system when a user-added port on this module is
* triggered. The first argument is the name of the triggered port
*/
public HwObject piPerformUserPort(String portName, HwObject args[])
throws HwException
{
return HwLObject.from(null);
}
/** piEventKeyDown **
* Called by the system when a key down event occurs.
* Returning true will consume the key down event.
*/
public boolean piEventKeyDown(Event evt, int key)
throws HwException
{
return false;
}
/** piEventKeyUp **
* Called by the system when a key up event occurs.
* Returning true will consume the key up event.
*/
public boolean piEventKeyUp(Event evt, int key)
throws HwException
{
return false;
}
/** piPrepareMedia **
* Called by the system in preparation for asking the plug-in to draw in
* the case where the system wishes to defer all drawing until all
* necessary images are loaded and ready to draw.
* The implementation should call piGetRunService().siGetApplet().getImage(...)
* to initiate the asynchronous load of any images required to draw itself.
* If the images do not need to be scaled, the implementation should call
* theTracker.addImage(theImage, priority). If the image needs to be scaled,
* the implementation should call theTracker.addImage(theImage, priority,
* width, height)
*/
public void piPrepareMedia(HwMediaTracker theTracker, int priority)
{
piPrepareImage(theTracker, priority);
}
/** piPrepareImage **
* retained for backward compatibility.
*/
public void piPrepareImage(HwMediaTracker theTracker, int priority)
{}
/** piSetRadioState **
* Called when a module in the same container calls siSetRadioNodule().
* If the parameter is true, this plug-in is the one that made the call
* to siSetRadioNodule(). All other plug-ins in the same container
* will receive a parameter of false. What the plug-ins choose to do
* with this information is completely up to them.
* Generally, plug-ins use it to maintain an "active radio state". When
* one of the plug-ins wants to become active it calls siSetRadioNodule().
* It should not become active until it receives a call to piSetRadioState(true),
* since another module might call siSetRadioNodule() at the same time.
* The other plug-ins will receive a call to piSetRadioState(false), and
* should become inactive. This ensures that only one module is active
* at a time, similar to radio buttons on a dialog.
*/
public boolean piSetRadioState(boolean state)
throws HwException
{
return false;
}
/** piMouseDown **
* Called by the system when the user has depressed the mouse
* within the plug-in's clickable extent. This extent may exclude
* transparent areas and may include selection highlights.
* The plug-in should update its appearance and internal state
* accordingly. Wire messages initiated by the event will be sent
* automatically by the system. The implementation should return
* true if it wishes to terminate the broadcast of the event
* through the module hierarchy, and false, if the event should be
* broadcast to other modules as well.
*/
public boolean piMouseDown(Event evt, int x, int y)
throws HwException
{
return true;
}
/** piMouseMove **
* Called by the system when the user has moved the mouse with
* the mouse up within the plug-in bounding rectangle. The plug-in
* should update its appearance and internal state accordingly. Wire
* messages initiated by the event will be sent automatically
* by the system. The implementation should return
* true if it wishes to terminate the broadcast of the event
* through the module hierarchy, and false, if the event should be
* broadcast to other modules as well.
*/
public boolean piMouseMove(Event evt, int x, int y)
throws HwException
{
return true;
}
/** piMouseDrag **
* Called by the system when the user has moved the mouse with
* the mouse down within the plug-in bounding rectangle. The plug-in
* should update its appearance and internal state accordingly. Wire
* messages initiated by the event will be sent automatically
* by the system. The implementation should return
* true if it wishes to terminate the broadcast of the event
* through the module hierarchy, and false, if the event should be
* broadcast to other modules as well. This event will only be sent if
* the module is not moveable. If the module is moveable, the drag will
* result in the visual representation of the module being dragged in
* the display.
*/
public boolean piMouseDrag(Event evt, int x, int y)
throws HwException
{
return true;
}
/** piMouseUp **
* Called by the system when the user has let up the mouse
* within the plug-in's clickable extent. This extent may exclude
* transparent areas and may include selection highlights.
* The plug-in should update its appearance and internal state
* accordingly. Wire messages initiated by the event will be sent
* automatically by the system. The implementation should return
* true if it wishes to terminate the broadcast of the event
* through the module hierarchy, and false, if the event should be
* broadcast to other modules as well.
*/
public boolean piMouseUp(Event evt, int x, int y)
throws HwException
{
return true;
}
}