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package gl4java.drawable;
import java.awt.*;
import gl4java.*;
import gl4java.awt.*;
import gl4java.swing.*;
import java.security.*;
/** <P> Provides a VM- and OS-independent mechanism for creating
{@link gl4java.awt.GLAnimCanvas},
{@link gl4java.awt.GLCanvas},
{@link gl4java.swing.GLAnimJPanel}
and {@link gl4java.swing.GLJPanel}
objects. Most useful when used in conjunction with the {@link
gl4java.drawable.GLEventListener} model, where subclassing is not
required. </P>
<P> The {@link gl4java.GLCapabilities} objects passed in to the
various factory methods are used as a minimum specification for
the properties of the returned GLCanvas. The canvas will either
meet or exceed all of the integer properties such as color and
accumulation buffer depth and will match all of the boolean
properties such as enabling or disabling of stereo. The selection
algorithm in general attempts to select the most minimal window
type to meet the criteria, but is otherwise left loosely
specified.
</P>
<P> The implementing class of this abstract factory methods
does clone your given GLCapabilities. So your version is unchanged.
The GLContext's GLCapabilites instance is changed to
the used capabilities, so you can query GLContext's GLCapabilites!
</P>
<P> It is currently not possible to specify GLCapabilities for
lightweight components. </P>
*/
public abstract class GLDrawableFactory {
static {
GLContext.doLoadNativeLibraries(null, null, null);
}
private static GLDrawableFactory soleInstance;
/** Returns the sole instance of the GLCanvasFactory (singleton
pattern). */
public static GLDrawableFactory getFactory() {
GLContext.doLoadNativeLibraries(null, null, null);
String jvmVendor = GLContext.getJVMVendor();
boolean isIBMJvm = jvmVendor!=null && jvmVendor.indexOf("IBM")>=0 ;
boolean isMicrosoftJvm =
jvmVendor!=null && jvmVendor.indexOf("Microsoft")>=0 ;
if (soleInstance == null) {
if( GLContext.getJVMVersionMajor()>=2 ||
( GLContext.getJVMVersionMajor()==1 &&
GLContext.getJVMVersionMinor()>=4
) ||
( GLContext.getJVMVersionMajor()==1 &&
GLContext.getJVMVersionMinor()>=3 &&
!isIBMJvm && !isMicrosoftJvm
)
)
{
String clazzName = null;
switch(GLContext.getNativeOSType())
{
case GLContext.OsWindoof:
clazzName =
"gl4java.drawable.Win32SunJDK13GLDrawableFactory";
break;
case GLContext.OsMac9:
case GLContext.OsMacX:
clazzName =
"gl4java.drawable.MacSunJDK13GLDrawableFactory";
break;
case GLContext.OsX11:
clazzName =
"gl4java.drawable.X11SunJDK13GLDrawableFactory";
break;
default:
System.out.println("GLDrawableFactory: Unsupported OS: "+
GLContext.getNativeOSName() + ", using DummyGLDrawableFactory");
}
if(clazzName!=null)
{
final String f_clazzName = clazzName;
soleInstance = (GLDrawableFactory)
AccessController.doPrivileged(new PrivilegedAction() {
public Object run()
{
try {
return Class.forName(f_clazzName).newInstance();
} catch (Exception ex) {
System.out.println("GLDrawableFactory: could not create instance of: "+ f_clazzName + ", using DummyGLDrawableFactory");
}
return null;
}});
}
}
if( soleInstance == null )
{
soleInstance = new DummyGLDrawableFactory();
}
}
return soleInstance;
}
/** Create a new GLAnimCanvas given the specified GLCapabilities.
@param capabilities the requested set of OpenGL capabilities of
the canvas
@param width the canvas's initial width
@param height the canvas's initial height
@return a GLAnimCanvas supporting the set of specified capabilities,
or null if there was no matching visual */
public GLAnimCanvas createGLAnimCanvas(GLCapabilities capabilities,
int width,
int height)
{
return createGLAnimCanvas(capabilities, width, height, null, null);
}
/** Create a new GLAnimCanvas given the specified GLCapabilities.
@param capabilities the requested set of OpenGL capabilities of
the canvas
@param width the canvas's initial width
@param height the canvas's initial height
@param glName the name of the GLFunc implementation.
If null, the default class will be used
@param gluName the name of the GLUFunc implementation.
If null, the default class will be used
@return a GLAnimCanvas supporting the set of specified capabilities,
or null if there was no matching visual */
public abstract GLAnimCanvas createGLAnimCanvas(GLCapabilities capabilities,
int width,
int height,
String glName,
String gluName);
/** Create a new GLCanvas given the specified GLCapabilities.
@param capabilities the requested set of OpenGL capabilities of
the canvas
@param width the canvas's initial width
@param height the canvas's initial height
@return a GLCanvas supporting the set of specified capabilities,
or null if there was no matching visual */
public GLCanvas createGLCanvas(GLCapabilities capabilities,
int width,
int height)
{
return createGLCanvas(capabilities, width, height, null, null);
}
/** Create a new GLCanvas given the specified GLCapabilities.
@param capabilities the requested set of OpenGL capabilities of
the canvas
@param width the canvas's initial width
@param height the canvas's initial height
@param glName the name of the GLFunc implementation.
If null, the default class will be used
@param gluName the name of the GLUFunc implementation.
If null, the default class will be used
@return a GLCanvas supporting the set of specified capabilities,
or null if there was no matching visual */
public abstract GLCanvas createGLCanvas(GLCapabilities capabilities,
int width,
int height,
String glName,
String gluName);
/** Create a new GLAnimJPanel. */
public GLAnimJPanel createGLAnimJPanel() {
return new GLAnimJPanel();
}
/** Create a new GLAnimJPanel with the specified GL/GLU library names,
LayoutManager, and double buffering specification.
@param glName the name of the GLFunc implementation.
If null, the default class will be used
@param gluName the name of the GLUFunc implementation.
If null, the default class will be used
@param layout the layout manager
@param isDoubleBuffered indicates if double buffering should be used
*/
public GLAnimJPanel createGLAnimJPanel(String glName,
String gluName,
LayoutManager layout,
boolean isDoubleBuffered) {
return new GLAnimJPanel(glName, gluName, layout, isDoubleBuffered);
}
/** Create a new GLJPanel. */
public GLJPanel createGLJPanel() {
return new GLJPanel();
}
/** Create a new GLJPanel with the specified GL/GLU library names,
LayoutManager, and double buffering specification.
@param glName the name of the GLFunc implementation.
If null, the default class will be used
@param gluName the name of the GLUFunc implementation.
If null, the default class will be used
@param layout the layout manager
@param isDoubleBuffered indicates if double buffering should be used
*/
public GLJPanel createGLJPanel(String glName,
String gluName,
LayoutManager layout,
boolean isDoubleBuffered) {
return new GLJPanel(glName, gluName, layout, isDoubleBuffered);
}
}
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