Package com.jogamp.opengl

Class GLAutoDrawableDelegate

java.lang.Object

jogamp.opengl.GLAutoDrawableBase

com.jogamp.opengl.GLAutoDrawableDelegate

All Implemented Interfaces:

NativeSurfaceHolder, FPSCounter, GLAutoDrawable, GLDrawable, GLSharedContextSetter, GLStateKeeper

public class GLAutoDrawableDelegate
extends jogamp.opengl.GLAutoDrawableBase
implements GLAutoDrawable

Fully functional GLAutoDrawable implementation utilizing already created GLDrawable and GLContext instances.

Since no native windowing system events are being processed, it is recommended to handle at least the window events:

• repaint using windowRepaintOp()
• resize using #windowResizedOp()

and setup a custom toolkit destruction issuing windowDestroyNotifyOp().

See example TestGLAutoDrawableDelegateNEWT.

OpenGL Context Sharing

To share a GLContext see the following note in the documentation overview: context sharing as well as GLSharedContextSetter.

Nested Class Summary

Nested classes/interfaces inherited from interface com.jogamp.opengl.GLStateKeeper

GLStateKeeper.Listener

Field Summary

Fields inherited from class jogamp.opengl.GLAutoDrawableBase

DEBUG

Fields inherited from interface com.jogamp.opengl.FPSCounter

DEFAULT_FRAMES_PER_INTERVAL

Fields inherited from interface com.jogamp.opengl.GLAutoDrawable

SCREEN_CHANGE_ACTION_ENABLED

Constructor Summary

Constructors

Constructor	Description
GLAutoDrawableDelegate(GLDrawable drawable, GLContext context, Object upstreamWidget, boolean ownDevice, RecursiveLock lock)	The GLContext can be assigned later manually via setContext(ctx) or it will be created lazily at the 1st display() method call. Lazy GLContext creation will take a shared GLContext into account which has been set directly or via another GLAutoDrawable.

Method Summary

Modifier and Type	Method	Description
void	destroy()	Destroys all resources associated with this GLAutoDrawable, inclusive the GLContext.
void	display()	Causes OpenGL rendering to be performed for this GLAutoDrawable in the following order: Calling display(..) for all registered GLEventListeners.
GLDrawableFactory	getFactory()	Return the GLDrawableFactory being used to create this instance.
RecursiveLock	getUpstreamLock()	Returns the recursive lock object of the upstream widget to synchronize multithreaded access on top of NativeSurface.lockSurface().
Object	getUpstreamWidget()	Method may return the upstream UI toolkit object holding this GLAutoDrawable instance, if exist.
void	setUpstreamWidget(Object newUpstreamWidget)	Set the upstream UI toolkit object.
void	swapBuffers()	Swaps the front and back buffers of this drawable.
String	toString()
void	windowDestroyNotifyOp()	Implementation to handle destroy notifications from the windowing system.
void	windowRepaintOp()	Default implementation to handle repaint events from the windowing system
void	windowResizedOp(int newWidth, int newHeight)	Handling resize events from the windowing system.

Methods inherited from class jogamp.opengl.GLAutoDrawableBase

addGLEventListener, addGLEventListener, areAllGLEventListenerInitialized, clearPreservedGLState, createContext, defaultSwapBuffers, disposeGLEventListener, flushGLRunnables, getAnimator, getAutoSwapBufferMode, getChosenGLCapabilities, getContext, getContextCreationFlags, getDelegatedDrawable, getExclusiveContextThread, getFPSStartTime, getGL, getGLEventListener, getGLEventListenerCount, getGLEventListenerInitState, getGLProfile, getHandle, getLastFPS, getLastFPSPeriod, getLastFPSUpdateTime, getNativeSurface, getPreservedGLState, getRequestedGLCapabilities, getSurfaceHeight, getSurfaceWidth, getTotalFPS, getTotalFPSDuration, getTotalFPSFrames, getUpdateFPSFrames, invoke, invoke, invokeOnCurrentThread, invokeOnNewThread, isGLOriented, isGLStatePreservationSupported, isRealized, isThreadGLCapable, preserveGLStateAtDestroy, removeGLEventListener, resetFPSCounter, setAnimator, setAutoSwapBufferMode, setContext, setContextCreationFlags, setExclusiveContextThread, setGL, setGLEventListenerInitState, setGLStateKeeperListener, setRealized, setSharedAutoDrawable, setSharedContext, setUpdateFPSFrames

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.jogamp.opengl.GLAutoDrawable

addGLEventListener, addGLEventListener, areAllGLEventListenerInitialized, createContext, disposeGLEventListener, flushGLRunnables, getAnimator, getAutoSwapBufferMode, getContext, getContextCreationFlags, getDelegatedDrawable, getExclusiveContextThread, getGL, getGLEventListener, getGLEventListenerCount, getGLEventListenerInitState, invoke, invoke, isThreadGLCapable, removeGLEventListener, setAnimator, setAutoSwapBufferMode, setContext, setContextCreationFlags, setExclusiveContextThread, setGL, setGLEventListenerInitState

Methods inherited from interface com.jogamp.opengl.GLDrawable

getChosenGLCapabilities, getGLProfile, getHandle, getNativeSurface, getRequestedGLCapabilities, getSurfaceHeight, getSurfaceWidth, isGLOriented, isRealized, setRealized

Constructor Detail

GLAutoDrawableDelegate

public GLAutoDrawableDelegate(GLDrawable drawable,
                              GLContext context,
                              Object upstreamWidget,
                              boolean ownDevice,
                              RecursiveLock lock)

The GLContext can be assigned later manually via setContext(ctx) or it will be created lazily at the 1st display() method call.
Lazy GLContext creation will take a shared GLContext into account which has been set directly or via another GLAutoDrawable.

Parameters:

drawable - a valid GLDrawable, may not be realized yet.

context - a valid GLContext, may not have been made current (created) yet, may not be associated w/ drawable yet, may be null for lazy initialization at 1st display().

upstreamWidget - optional UI element holding this instance, see getUpstreamWidget().

ownDevice - pass true if AbstractGraphicsDevice.close() shall be issued, otherwise pass false. Closing the device is required in case the drawable is created w/ it's own new instance, e.g. offscreen drawables, and no further lifecycle handling is applied.

lock - optional custom RecursiveLock.

Method Detail

windowRepaintOp

public final void windowRepaintOp()

Default implementation to handle repaint events from the windowing system

windowResizedOp

public final void windowResizedOp(int newWidth,
                                  int newHeight)

Handling resize events from the windowing system.

Implementation:

• resizes the GLDrawable, if offscreen,
• triggers a pending reshape events, and
• issues a display() call, if no animator is present.

All required locks are being claimed.

Parameters:

newWidth - new width in pixel units

newWidth - new height in pixel units

windowDestroyNotifyOp

public final void windowDestroyNotifyOp()

Implementation to handle destroy notifications from the windowing system.

If the NativeSurface does not implement WindowClosingProtocol or WindowClosingProtocol.WindowClosingMode.DISPOSE_ON_CLOSE is enabled (default), a thread safe destruction is being induced.

getUpstreamLock

public final RecursiveLock getUpstreamLock()

Description copied from interface: GLAutoDrawable

Returns the recursive lock object of the upstream widget to synchronize multithreaded access on top of NativeSurface.lockSurface().

See GLAutoDrawable Locking.

Specified by:

getUpstreamLock in interface GLAutoDrawable

getUpstreamWidget

public final Object getUpstreamWidget()

Description copied from interface: GLAutoDrawable

Method may return the upstream UI toolkit object holding this GLAutoDrawable instance, if exist.

Currently known Java UI toolkits and it's known return types are:

Toolkit	GLAutoDrawable Implementation	~	Return Type of getUpstreamWidget()
NEWT	GLWindow	has a	Window
SWT	GLCanvas	is a	Canvas
AWT	GLCanvas	is a	Canvas
AWT	GLJPanel	is a	JPanel

However, the result may be other object types than the listed above due to new supported toolkits.

This method may also return null if no UI toolkit is being used, as common for offscreen rendering.

Specified by:

getUpstreamWidget in interface GLAutoDrawable

setUpstreamWidget

public final void setUpstreamWidget(Object newUpstreamWidget)

Set the upstream UI toolkit object.

See Also:

getUpstreamWidget()

destroy

public final void destroy()

Destroys all resources associated with this GLAutoDrawable, inclusive the GLContext. If a window is attached to it's implementation, it shall be closed. Causes disposing of all OpenGL resources by calling dispose(..) for all registered GLEventListeners. Called automatically by the window system toolkit upon receiving a destroy notification. This routine may be called manually.

This implementation calls GLAutoDrawableBase.defaultDestroy().

User still needs to destroy the upstream window, which details are hidden from this aspect. This can be performed by overriding destroyImplInLock().

Specified by:

destroy in interface GLAutoDrawable

display

public void display()

Description copied from interface: GLAutoDrawable

Causes OpenGL rendering to be performed for this GLAutoDrawable in the following order:

• Calling display(..) for all registered GLEventListeners.
• Executes all one-shot GLRunnable, enqueued via GLAutoDrawable.invoke(boolean, GLRunnable).

May be called periodically by a running GLAnimatorControl implementation,
which must register itself with GLAutoDrawable.setAnimator(com.jogamp.opengl.GLAnimatorControl).

Called automatically by the window system toolkit upon receiving a repaint() request,
except an GLAnimatorControl implementation GLAnimatorControl.isAnimating().

This routine may also be called manually for better control over the rendering process. It is legal to call another GLAutoDrawable's display method from within the display(..) callback.

In case of a new generated OpenGL context, the implementation shall call init(..) for all registered GLEventListeners before making the actual display(..) calls, in case this has not been done yet.

Specified by:

display in interface GLAutoDrawable

See Also:

GLAutoDrawable.setAnimator(com.jogamp.opengl.GLAnimatorControl)

getFactory

public final GLDrawableFactory getFactory()

Description copied from interface: GLDrawable

Return the GLDrawableFactory being used to create this instance.

Specified by:

getFactory in interface GLDrawable

swapBuffers

public final void swapBuffers()
                       throws GLException

Description copied from interface: GLDrawable

Swaps the front and back buffers of this drawable. For GLAutoDrawable implementations, when automatic buffer swapping is enabled (as is the default), this method is called automatically and should not be called by the end user.

Specified by:

swapBuffers in interface GLDrawable

Throws:

GLException

toString

public String toString()

Specified by:

toString in interface GLDrawable

Overrides:

toString in class jogamp.opengl.GLAutoDrawableBase