1 files changed, 813 insertions, 0 deletions
diff --git a/src/nativewindow/native/ios/IOSmisc.m b/src/nativewindow/native/ios/IOSmisc.m
new file mode 100644
index 000000000..5826b9eef
--- /dev/null
+++ b/src/nativewindow/native/ios/IOSmisc.m
@@ -0,0 +1,813 @@
+/**
+ * Copyright 2019 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ * 
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ * 
+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+ 
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdarg.h>
+#include <unistd.h>
+
+#include "CAEAGLLayered.h"
+
+#import "NativeWindowProtocols.h"
+
+#include "jogamp_nativewindow_ios_IOSUtil.h"
+
+// #define VERBOSE 1
+//
+#ifdef VERBOSE
+    // #define DBG_PRINT(...) NSLog(@ ## __VA_ARGS__)
+    #define DBG_PRINT(...) fprintf(stderr, __VA_ARGS__); fflush(stderr)
+#else
+    #define DBG_PRINT(...)
+#endif
+
+// #define VERBOSE2 1
+//
+#ifdef VERBOSE2
+    #define DBG_PRINT2(...) fprintf(stderr, __VA_ARGS__); fflush(stderr)
+#else
+    #define DBG_PRINT2(...)
+#endif
+
+// #define DBG_LIFECYCLE 1
+
+static const char * const ClazzNameRunnable = "java/lang/Runnable";
+static jmethodID runnableRunID = NULL;
+
+static const char * const ClazzAnyCstrName = "<init>";
+
+static const char * const ClazzNamePoint = "com/jogamp/nativewindow/util/Point";
+static const char * const ClazzNamePointCstrSignature = "(II)V";
+static jclass pointClz = NULL;
+static jmethodID pointCstr = NULL;
+
+static const char * const ClazzNameInsets = "com/jogamp/nativewindow/util/Insets";
+static const char * const ClazzNameInsetsCstrSignature = "(IIII)V";
+static jclass insetsClz = NULL;
+static jmethodID insetsCstr = NULL;
+
+JNIEXPORT jboolean JNICALL 
+Java_jogamp_nativewindow_ios_IOSUtil_initIDs0(JNIEnv *env, jclass _unused) {
+    if( NativewindowCommon_init(env) ) {
+        jclass c;
+        c = (*env)->FindClass(env, ClazzNamePoint);
+        if(NULL==c) {
+            NativewindowCommon_FatalError(env, "FatalError Java_jogamp_nativewindow_ios_IOSUtil_initIDs0: can't find %s", ClazzNamePoint);
+        }
+        pointClz = (jclass)(*env)->NewGlobalRef(env, c);
+        (*env)->DeleteLocalRef(env, c);
+        if(NULL==pointClz) {
+            NativewindowCommon_FatalError(env, "FatalError Java_jogamp_nativewindow_ios_IOSUtil_initIDs0: can't use %s", ClazzNamePoint);
+        }
+        pointCstr = (*env)->GetMethodID(env, pointClz, ClazzAnyCstrName, ClazzNamePointCstrSignature);
+        if(NULL==pointCstr) {
+            NativewindowCommon_FatalError(env, "FatalError Java_jogamp_nativewindow_ios_IOSUtil_initIDs0: can't fetch %s.%s %s",
+                ClazzNamePoint, ClazzAnyCstrName, ClazzNamePointCstrSignature);
+        }
+
+        c = (*env)->FindClass(env, ClazzNameInsets);
+        if(NULL==c) {
+            NativewindowCommon_FatalError(env, "FatalError Java_jogamp_nativewindow_ios_IOSUtil_initIDs0: can't find %s", ClazzNameInsets);
+        }
+        insetsClz = (jclass)(*env)->NewGlobalRef(env, c);
+        (*env)->DeleteLocalRef(env, c);
+        if(NULL==insetsClz) {
+            NativewindowCommon_FatalError(env, "FatalError Java_jogamp_nativewindow_ios_IOSUtil_initIDs0: can't use %s", ClazzNameInsets);
+        }
+        insetsCstr = (*env)->GetMethodID(env, insetsClz, ClazzAnyCstrName, ClazzNameInsetsCstrSignature);
+        if(NULL==insetsCstr) {
+            NativewindowCommon_FatalError(env, "FatalError Java_jogamp_nativewindow_ios_IOSUtil_initIDs0: can't fetch %s.%s %s",
+                ClazzNameInsets, ClazzAnyCstrName, ClazzNameInsetsCstrSignature);
+        }
+
+        c = (*env)->FindClass(env, ClazzNameRunnable);
+        if(NULL==c) {
+            NativewindowCommon_FatalError(env, "FatalError Java_jogamp_nativewindow_ios_IOSUtil_initIDs0: can't find %s", ClazzNameRunnable);
+        }
+        runnableRunID = (*env)->GetMethodID(env, c, "run", "()V");
+        if(NULL==runnableRunID) {
+            NativewindowCommon_FatalError(env, "FatalError Java_jogamp_nativewindow_ios_IOSUtil_initIDs0: can't fetch %s.run()V", ClazzNameRunnable);
+        }
+    }
+    return JNI_TRUE;
+}
+
+JNIEXPORT jboolean JNICALL 
+Java_jogamp_nativewindow_ios_IOSUtil_isCAEAGLLayer0(JNIEnv *env, jclass _unused, jlong object) {
+    NSObject *nsObj = (NSObject*) (intptr_t) object;
+    jboolean u = [nsObj isKindOfClass:[CAEAGLLayer class]];
+    DBG_PRINT( "isEAGLCALayer(obj: %p): %s -> %d\n", nsObj, [[nsObj description] UTF8String], u);
+    return u;
+}
+
+JNIEXPORT jboolean JNICALL 
+Java_jogamp_nativewindow_ios_IOSUtil_isCALayer0(JNIEnv *env, jclass _unused, jlong object) {
+    NSObject *nsObj = (NSObject*) (intptr_t) object;
+    jboolean u = [nsObj isKindOfClass:[CALayer class]];
+    DBG_PRINT( "isCALayer(obj: %p): %s -> %d\n", nsObj, [[nsObj description] UTF8String], u);
+    return u;
+}
+
+JNIEXPORT jboolean JNICALL 
+Java_jogamp_nativewindow_ios_IOSUtil_isUIView0(JNIEnv *env, jclass _unused, jlong object) {
+    NSObject *nsObj = (NSObject*) (intptr_t) object;
+    jboolean u = [nsObj isKindOfClass:[UIView class]];
+    DBG_PRINT( "isUIView(obj: %p): %s -> %d\n", nsObj, [[nsObj description] UTF8String], u);
+    return u;
+}
+
+JNIEXPORT jboolean JNICALL 
+Java_jogamp_nativewindow_ios_IOSUtil_isUIWindow0(JNIEnv *env, jclass _unused, jlong object) {
+    NSObject *nsObj = (NSObject*) (intptr_t) object;
+    jboolean u = [nsObj isKindOfClass:[UIWindow class]];
+    DBG_PRINT( "isUIWindow(obj: %p): %s -> %d\n", nsObj, [[nsObj description] UTF8String], u);
+    return u;
+}
+
+/*
+ * Class:     Java_jogamp_nativewindow_ios_IOSUtil
+ * Method:    getLocationOnScreen0
+ * Signature: (JII)Lcom/jogamp/nativewindow/util/Point;
+ */
+JNIEXPORT jobject JNICALL Java_jogamp_nativewindow_ios_IOSUtil_GetLocationOnScreen0
+  (JNIEnv *env, jclass unused, jlong winOrView, jint src_x, jint src_y)
+{
+    NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
+
+    /**
+     * return location in 0/0 top-left space,
+     * OSX NSView is 0/0 bottom-left space naturally
+     * iOS UIView is 0/0 top-left space naturally
+     */
+    NSObject *nsObj = (NSObject*) (intptr_t) winOrView;
+    UIWindow* win = NULL;
+
+    if( [nsObj isKindOfClass:[UIWindow class]] ) {
+        win = (UIWindow*) nsObj;
+    } else if( nsObj != NULL && [nsObj isKindOfClass:[UIView class]] ) {
+        UIView* view = (UIView*) nsObj;
+        win = [view window];
+        if( NULL == win ) {
+            NativewindowCommon_throwNewRuntimeException(env, "view has null window, view %p\n", nsObj);
+        }
+    } else {
+        NativewindowCommon_throwNewRuntimeException(env, "neither win nor view %p\n", nsObj);
+    }
+    CGPoint p = CGPointMake(src_x, src_y);
+    UIScreen* screen = [win screen];
+    CGPoint pS = [win convertPoint: p toCoordinateSpace: screen.fixedCoordinateSpace];
+
+#ifdef VERBOSE_ON
+    CGRect winFrame = [self frame];
+    DBG_PRINT( "GetLocationOnScreen0(window: %p):: point-in[%d/%d], winFrame[%d/%d %dx%d] -> %d/%d\n",
+        win, 
+        (int)p.x, (int)p.y,
+        (int)winFrame.origin.x, (int)winFrame.origin.y, (int)winFrame.size.width, (int)winFrame.size.height,
+        (int)pS.x, (int)pS.y);
+#endif
+
+    jobject res = (*env)->NewObject(env, pointClz, pointCstr, (jint)pS.x, (jint)pS.y);
+
+    [pool release];
+
+    return res;
+}
+
+/*
+ * Class:     Java_jogamp_nativewindow_ios_IOSUtil
+ * Method:    getInsets0
+ * Signature: (J)Lcom/jogamp/nativewindow/util/Insets;
+ */
+JNIEXPORT jobject JNICALL Java_jogamp_nativewindow_ios_IOSUtil_GetInsets0
+  (JNIEnv *env, jclass unused, jlong winOrView)
+{
+    NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
+
+    NSObject *nsObj = (NSObject*) (intptr_t) winOrView;
+    UIWindow* win = NULL;
+    jint il,ir,it,ib;
+
+    if( [nsObj isKindOfClass:[UIWindow class]] ) {
+        win = (UIWindow*) nsObj;
+    } else if( nsObj != NULL && [nsObj isKindOfClass:[UIView class]] ) {
+        UIView* view = (UIView*) nsObj;
+        win = [view window];
+        if( NULL == win ) {
+            NativewindowCommon_throwNewRuntimeException(env, "view has null window, view %p\n", nsObj);
+        }
+    } else {
+        NativewindowCommon_throwNewRuntimeException(env, "neither win nor view %p\n", nsObj);
+    }
+
+    UIEdgeInsets uiInsets = [win safeAreaInsets];
+    il = uiInsets.left;
+    ir = uiInsets.right;
+    it = uiInsets.top;
+    ib = uiInsets.bottom;
+    /**
+    CGRect frameRect = [win frame];
+    CGRect contentRect = [win contentRectForFrameRect: frameRect];
+
+    // note: this is a simplistic implementation which doesn't take
+    // into account DPI and scaling factor
+    CGFloat l = contentRect.origin.x - frameRect.origin.x;
+    il = (jint)l;                                                     // l
+    ir = (jint)(frameRect.size.width - (contentRect.size.width + l)); // r
+    it = (jint)(frameRect.size.height - contentRect.size.height);     // t
+    ib = (jint)(contentRect.origin.y - frameRect.origin.y);           // b
+    */
+
+    jobject res = (*env)->NewObject(env, insetsClz, insetsCstr, il, ir, it, ib);
+
+    [pool release];
+
+    return res;
+}
+
+/*
+ * Class:     Java_jogamp_nativewindow_ios_IOSUtil
+ * Method:    GetPixelScale1
+ * Signature: (I)D
+ */
+JNIEXPORT jdouble JNICALL Java_jogamp_nativewindow_ios_IOSUtil_GetPixelScale1
+  (JNIEnv *env, jclass unused, jint displayID)
+{
+    NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
+
+    CGFloat pixelScale = 1.0; // default
+    // UIScreen *screen =  IOSUtil_getUIScreenByCGDirectDisplayID((CGDirectDisplayID)displayID);
+    UIScreen *screen =  [UIScreen mainScreen];
+    if( NULL != screen ) {
+NS_DURING
+        // Available >= 10.7
+        pixelScale = [screen scale]; // HiDPI scaling
+NS_HANDLER
+NS_ENDHANDLER
+    }
+    [pool release];
+
+    return (jdouble)pixelScale;
+}
+
+/*
+ * Class:     Java_jogamp_nativewindow_ios_IOSUtil
+ * Method:    GetPixelScale1
+ * Signature: (J)D
+ */
+JNIEXPORT jdouble JNICALL Java_jogamp_nativewindow_ios_IOSUtil_GetPixelScale2
+  (JNIEnv *env, jclass unused, jlong winOrView)
+{
+    NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
+
+    NSObject *nsObj = (NSObject*) (intptr_t) winOrView;
+    UIScreen *screen = NULL;
+
+    if( [nsObj isKindOfClass:[UIWindow class]] ) {
+        UIWindow* win = (UIWindow*) nsObj;
+        screen = [win screen];
+    } else if( nsObj != NULL && [nsObj isKindOfClass:[UIView class]] ) {
+        UIView* view = (UIView*) nsObj;
+        UIWindow* win = [view window];
+        if( NULL == win ) {
+            NativewindowCommon_throwNewRuntimeException(env, "view has null window, view %p\n", nsObj);
+        }
+        screen = [win screen];
+    } else {
+        NativewindowCommon_throwNewRuntimeException(env, "neither win nor view %p\n", nsObj);
+    }
+
+    CGFloat pixelScale = 1.0; // default
+NS_DURING
+    // Available >= 10.7
+    pixelScale = [screen scale]; // HiDPI scaling
+NS_HANDLER
+NS_ENDHANDLER
+
+    [pool release];
+
+    return (jdouble)pixelScale;
+}
+
+/*
+ * Class:     Java_jogamp_nativewindow_ios_IOSUtil
+ * Method:    CreateUIWindow0
+ * Signature: (IIIIZ)J
+ */
+JNIEXPORT jlong JNICALL Java_jogamp_nativewindow_ios_IOSUtil_CreateUIWindow0
+  (JNIEnv *env, jclass unused, jint x, jint y, jint width, jint height)
+{
+    NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
+    [CATransaction begin];
+    CGRect boundsWin = CGRectMake(x, y, width, height);
+    CGRect boundsView = CGRectMake(0, 0, width, height);
+
+    // Allocate the window
+    UIWindow *myWindow = [[[[UIWindow alloc] initWithFrame:boundsWin] autorelease] retain];
+    myWindow.rootViewController = [[[UIViewController alloc] initWithNibName:nil bundle:nil] autorelease];
+    [myWindow setBackgroundColor: [UIColor redColor]];
+
+    // n/a iOS [myWindow setPreservesContentDuringLiveResize: YES];
+
+    // FIXME invisible .. (we keep it visible for testing)
+    // FIXME [myWindow setOpaque: NO];
+    // FIXME [myWindow setBackgroundColor: [UIColor clearColor]];
+    [myWindow makeKeyAndVisible];
+
+    CAEAGLUIView *uiView = [[CAEAGLUIView alloc] initWithFrame:boundsView];
+    CAEAGLLayer* l = (CAEAGLLayer*)[uiView layer];
+    [l setOpaque: YES];
+
+    [myWindow addSubview: uiView];
+
+    [CATransaction commit];
+    [pool release];
+    return (jlong) ((intptr_t) myWindow);
+}
+
+/*
+ * Class:     Java_jogamp_nativewindow_ios_IOSUtil
+ * Method:    DestroyUIWindow0
+ * Signature: (J)V
+ */
+JNIEXPORT void JNICALL Java_jogamp_nativewindow_ios_IOSUtil_DestroyUIWindow0
+  (JNIEnv *env, jclass unused, jlong nsWindow)
+{
+    NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
+    [CATransaction begin];
+
+NS_DURING
+    UIWindow* mWin = (UIWindow*) ((intptr_t) nsWindow);
+    [mWin resignKeyWindow];
+    [mWin setHidden: YES];
+    NSArray* subviews = [mWin subviews];
+    if(NULL != subviews) {
+        for(int i=0; i<[subviews count]; i++) {
+            UIView* sub = [subviews objectAtIndex: i];
+            [sub setHidden: YES];
+            [sub release];
+        }
+    }
+    [mWin release];
+NS_HANDLER
+    // On killing or terminating the process [UIWindow _close], rarely
+    // throws an NSRangeException while ordering out menu items
+NS_ENDHANDLER
+
+    [CATransaction commit];
+    [pool release];
+}
+
+/*
+ * Class:     Java_jogamp_nativewindow_ios_IOSUtil
+ * Method:    GetCALayer0
+ * Signature: (J)J
+ */
+JNIEXPORT jlong JNICALL Java_jogamp_nativewindow_ios_IOSUtil_GetCALayer0
+  (JNIEnv *env, jclass unused, jlong view)
+{
+    NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
+    UIView* uiView = (UIWindow*) ((intptr_t) view);
+
+    jlong res = (jlong) ((intptr_t) (CALayer *) [uiView layer]);
+
+    DBG_PRINT( "GetCALayer(view: %p): %p\n", uiView, (void*) (intptr_t) res);
+
+    [pool release];
+    return res;
+}
+
+/*
+ * Class:     Java_jogamp_nativewindow_ios_IOSUtil
+ * Method:    GetCAEAGLLayer0
+ * Signature: (J)J
+ */
+JNIEXPORT jlong JNICALL Java_jogamp_nativewindow_ios_IOSUtil_GetCAEAGLLayer0
+  (JNIEnv *env, jclass unused, jlong view)
+{
+    NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
+    UIView* uiView = (UIWindow*) ((intptr_t) view);
+
+    CALayer* l = [uiView layer];
+    jboolean isRes = [l isKindOfClass:[CAEAGLLayer class]];
+    jlong res = isRes ? (jlong) ((intptr_t) l) : 0;
+
+    DBG_PRINT( "GetCAEAGLLayer(view: %p): CALayer %p, CAEAGLLayer %p (%d)\n", uiView, l, (void*) (intptr_t) res, isRes);
+
+    [pool release];
+    return res;
+}
+
+/*
+ * Class:     Java_jogamp_nativewindow_ios_IOSUtil
+ * Method:    GetUIView0
+ * Signature: (J)J
+ */
+JNIEXPORT jlong JNICALL Java_jogamp_nativewindow_ios_IOSUtil_GetUIView0
+  (JNIEnv *env, jclass unused, jlong window, jboolean onlyCAEAGLUIView)
+{
+    NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
+    UIWindow* win = (UIWindow*) ((intptr_t) window);
+    jlong res;
+
+    if( onlyCAEAGLUIView ) {
+        CAEAGLUIView* v0 = [CAEAGLUIView findCAEAGLUIView: win
+                                         startIdx: 0];
+        res = (jlong) ((intptr_t) v0);
+    } else {
+        UIView* v0 = [CAEAGLUIView getUIView: win startIdx: 0];
+        res = (jlong) ((intptr_t) v0);
+    }
+
+    DBG_PRINT( "GetUIView(window: %p): %p\n", win, (void*) (intptr_t) res);
+
+    [pool release];
+    return res;
+}
+
+/*
+ * Class:     Java_jogamp_nativewindow_ios_IOSUtil
+ * Method:    GetUIWindow0
+ * Signature: (J)J
+ */
+JNIEXPORT jlong JNICALL Java_jogamp_nativewindow_ios_IOSUtil_GetUIWindow0
+  (JNIEnv *env, jclass unused, jlong view)
+{
+    NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
+    UIView* v = (UIView*) ((intptr_t) view);
+
+    jlong res = (jlong) ((intptr_t) [v window]);
+
+    DBG_PRINT( "GetUIWindow(view: %p): %p\n", v, (void*) (intptr_t) res);
+
+    [pool release];
+    return res;
+}
+
+/*
+ * Class:     Java_jogamp_nativewindow_ios_IOSUtil
+ * Method:    SetUIViewPixelScale0
+ * Signature: (JF)V
+ */
+JNIEXPORT void JNICALL Java_jogamp_nativewindow_ios_IOSUtil_SetUIViewPixelScale0
+  (JNIEnv *env, jclass unused, jlong view, jfloat contentScale)
+{
+    NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
+    UIView* v = (UIView*) ((intptr_t) view);
+
+NS_DURING
+    if( NULL != v ) {
+        [v setContentScaleFactor: (CGFloat)contentScale];
+    }
+NS_HANDLER
+NS_ENDHANDLER
+
+    [pool release];
+}
+/*
+ * Class:     Java_jogamp_nativewindow_ios_IOSUtil
+ * Method:    GetUIViewPixelScale0
+ * Signature: (J)F
+ */
+JNIEXPORT jfloat JNICALL Java_jogamp_nativewindow_ios_IOSUtil_GetUIViewPixelScale0
+  (JNIEnv *env, jclass unused, jlong view)
+{
+    NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
+    UIView* v = (UIView*) ((intptr_t) view);
+    jfloat r = 0.0f;
+
+NS_DURING
+    if( NULL != v ) {
+        r = [v contentScaleFactor];
+    }
+NS_HANDLER
+NS_ENDHANDLER
+
+    [pool release];
+    return r;
+}
+
+/*
+ * Class:     Java_jogamp_nativewindow_ios_IOSUtil
+ * Method:    SetCALayerPixelScale0
+ * Signature: (JJF)V
+ */
+JNIEXPORT void JNICALL Java_jogamp_nativewindow_ios_IOSUtil_SetCALayerPixelScale0
+  (JNIEnv *env, jclass unused, jlong rootCALayer, jlong subCALayer, jfloat contentsScale)
+{
+    NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
+    CALayer* rootLayer = (CALayer*) ((intptr_t) rootCALayer);
+    CALayer* subLayer = (CALayer*) ((intptr_t) subCALayer);
+
+    [CATransaction begin];
+    [CATransaction setValue:(id)kCFBooleanTrue forKey:kCATransactionDisableActions];
+
+NS_DURING
+    if( NULL != rootLayer ) {
+        [rootLayer setContentsScale: (CGFloat)contentsScale];
+    }
+    if( NULL != subLayer ) {
+        [subLayer setContentsScale: (CGFloat)contentsScale];
+    }
+NS_HANDLER
+NS_ENDHANDLER
+
+    [CATransaction commit];
+
+    [pool release];
+}
+/*
+ * Class:     Java_jogamp_nativewindow_ios_IOSUtil
+ * Method:    GetCALayerPixelScale0
+ * Signature: (J)F
+ */
+JNIEXPORT jfloat JNICALL Java_jogamp_nativewindow_ios_IOSUtil_GetCALayerPixelScale0
+  (JNIEnv *env, jclass unused, jlong caLayer)
+{
+    NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
+    CALayer* v = (CALayer*) ((intptr_t) caLayer);
+    jfloat r = 0.0f;
+
+NS_DURING
+    if( NULL != v ) {
+        r = [v contentsScale];
+    }
+NS_HANDLER
+NS_ENDHANDLER
+
+    [pool release];
+    return r;
+}
+
+@interface MainRunnable : NSObject
+
+{
+    jobject runnableObj;
+}
+
+- (id) initWithRunnable: (jobject)runnable;
+- (void) jRun;
+
+#ifdef DBG_LIFECYCLE
+- (id)retain;
+- (oneway void)release;
+- (void)dealloc;
+#endif
+
+
+@end
+
+@implementation MainRunnable
+
+- (id) initWithRunnable: (jobject)runnable
+{
+    runnableObj = runnable;
+    return [super init];
+}
+
+- (void) jRun
+{
+    int shallBeDetached = 0;
+    JNIEnv* env = NativewindowCommon_GetJNIEnv(1 /* asDaemon */, &shallBeDetached);
+    DBG_PRINT2("MainRunnable.1 env: %d\n", (int)(NULL!=env));
+    if(NULL!=env) {
+        DBG_PRINT2("MainRunnable.1.0\n");
+        (*env)->CallVoidMethod(env, runnableObj, runnableRunID);
+        DBG_PRINT2("MainRunnable.1.1\n");
+        (*env)->DeleteGlobalRef(env, runnableObj);
+
+        DBG_PRINT2("MainRunnable.1.3\n");
+        // detaching thread not required - daemon
+        // NativewindowCommon_ReleaseJNIEnv(shallBeDetached);
+    }
+    DBG_PRINT2("MainRunnable.X\n");
+}
+
+#ifdef DBG_LIFECYCLE
+
+- (id)retain
+{
+    DBG_PRINT2("MainRunnable::retain.0: %p (refcnt %d)\n", self, (int)[self retainCount]);
+    id o = [super retain];
+    DBG_PRINT2("MainRunnable::retain.X: %p (refcnt %d)\n", o, (int)[o retainCount]);
+    return o;
+}
+
+- (oneway void)release
+{
+    DBG_PRINT2("MainRunnable::release.0: %p (refcnt %d)\n", self, (int)[self retainCount]);
+    [super release];
+    // DBG_PRINT2("MainRunnable::release.X: %p (refcnt %d)\n", self, (int)[self retainCount]);
+}
+
+- (void)dealloc
+{
+    DBG_PRINT2("MainRunnable::dealloc.0 %p (refcnt %d)\n", self, (int)[self retainCount]);
+    [super dealloc];
+    // DBG_PRINT2("MainRunnable.dealloc.X: %p\n", self);
+}
+
+#endif
+
+@end
+
+// #define UIApp [UIApplication sharedApplication]
+// #define NSApp [NSApplication sharedApplication]
+
+static void RunOnThread (JNIEnv *env, jobject runnable, BOOL onMain, jint delayInMS)
+{
+    BOOL isMainThread = [NSThread isMainThread];
+    BOOL forkOnMain = onMain && ( NO == isMainThread || 0 < delayInMS );
+    // UIApplication * UIApp = [UIApplication sharedApplication];
+
+    DBG_PRINT2( "RunOnThread0: forkOnMain %d [onMain %d, delay %dms, isMainThread %d], UIApp %d, UIApp-isRunning %d\n", 
+        (int)forkOnMain, (int)onMain, (int)delayInMS, (int)isMainThread, (int)(NULL!=UIApp), (int)([UIApp applicationState]));
+
+    if ( forkOnMain ) {
+        jobject runnableObj = (*env)->NewGlobalRef(env, runnable);
+
+        DBG_PRINT2( "RunOnThread.1.0\n");
+        MainRunnable * mr = [[MainRunnable alloc] initWithRunnable: runnableObj];
+
+        if( onMain ) {
+            [mr performSelectorOnMainThread:@selector(jRun) withObject:nil waitUntilDone:NO];
+        } else {
+            NSTimeInterval delay = (double)delayInMS/1000.0;
+            [mr performSelector:@selector(jRun) withObject:nil afterDelay:delay];
+        }
+        DBG_PRINT2( "RunOnThread.1.1\n");
+
+        [mr release];
+        DBG_PRINT2( "RunOnThread.1.2\n");
+
+    } else {
+        DBG_PRINT2( "RunOnThread.2\n");
+        (*env)->CallVoidMethod(env, runnable, runnableRunID);
+    }
+    DBG_PRINT2( "RunOnThread.X\n");
+}
+
+static void IOSUtil_KickUIApp() {
+    // UIApplication * UIApp = [UIApplication sharedApplication];
+    /*** iOS-FIXME: UIEvent creation and post n/a !!!
+    UIEvent* event = [UIEvent otherEventWithType: UIApplicationDefined
+                                        location: NSMakePoint(0,0)
+                                   modifierFlags: 0
+                                       timestamp: 0.0
+                                    windowNumber: 0
+                                         context: nil
+                                         subtype: 0
+                                           data1: 0
+                                           data2: 0];
+    [UIApp postEvent: event atStart: true];
+    */
+}
+
+/**
+ * Class:     Java_jogamp_nativewindow_ios_IOSUtil
+ * Method:    RunOnMainThread0
+ * Signature: (ZLjava/lang/Runnable;)V
+ */
+JNIEXPORT void JNICALL Java_jogamp_nativewindow_ios_IOSUtil_RunOnMainThread0
+  (JNIEnv *env, jclass unused, jboolean kickUIApp, jobject runnable)
+{
+    NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
+    RunOnThread (env, runnable, YES, 0);
+    if( kickUIApp ) {
+        IOSUtil_KickUIApp();
+    }
+    [pool release];
+}
+
+/*
+ * Class:     Java_jogamp_nativewindow_ios_IOSUtil
+ * Method:    RunLater0
+ * Signature: (ZZLjava/lang/Runnable;I)V
+ */
+JNIEXPORT void JNICALL Java_jogamp_nativewindow_ios_IOSUtil_RunLater0
+  (JNIEnv *env, jclass unused, jboolean onMain, jboolean kickUIApp, jobject runnable, jint delay)
+{
+    NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
+    RunOnThread (env, runnable, onMain ? YES : NO, delay);
+    if( kickUIApp ) {
+        IOSUtil_KickUIApp();
+    }
+    [pool release];
+}
+
+/*
+ * Class:     Java_jogamp_nativewindow_ios_IOSUtil
+ * Method:    IsMainThread0
+ * Signature: (V)Z
+ */
+JNIEXPORT jboolean JNICALL Java_jogamp_nativewindow_ios_IOSUtil_IsMainThread0
+  (JNIEnv *env, jclass unused)
+{
+    return ( [NSThread isMainThread] == YES ) ? JNI_TRUE : JNI_FALSE ;
+}
+
+#define EAGL_TEST 1
+
+#ifdef EAGL_TEST
+#include <OpenGLES/ES2/gl.h>
+#include <OpenGLES/ES2/glext.h>
+
+@interface GLView : UIView
+{    
+    CAEAGLLayer *glLayer;
+    EAGLContext *glContext;
+    GLuint renderbuffer;
+}
+@end
+@implementation GLView
++ (Class)layerClass
+{
+    return [CAEAGLLayer class];
+}
+
+- (id)initWithFrame:(CGRect)frame
+{
+    if (self = [super initWithFrame:frame]) {
+        [self initGL];
+        [self render];
+    }
+    
+    return self;
+}
+
+- (void)render
+{
+    glClearColor(150.0/255.0, 200.0/255.0, 255.0/255.0, 1.0);
+    
+    glClear(GL_COLOR_BUFFER_BIT);
+    
+    [glContext presentRenderbuffer:GL_RENDERBUFFER];
+}
+
+- (void)initGL
+{    
+    glLayer = (CAEAGLLayer *)self.layer;
+    glLayer.opaque = YES;
+
+    glContext = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2];
+    if (!glContext) {
+        NSLog(@"Unable to create EAGLContext");
+        exit(1);
+    }
+    if (![EAGLContext setCurrentContext:glContext]) {
+        NSLog(@"Unable to set current EAGLContext");
+        exit(1);
+    }
+    glGenRenderbuffers(1, &renderbuffer);
+    glBindRenderbuffer(GL_RENDERBUFFER, renderbuffer);
+    [glContext renderbufferStorage:GL_RENDERBUFFER fromDrawable:glLayer];
+
+    GLuint framebuffer;
+    glGenFramebuffers(1, &framebuffer);
+    glBindFramebuffer(GL_FRAMEBUFFER, framebuffer);
+    glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, renderbuffer);
+}
+@end
+#endif /* EAGL_TEST */
+
+JNIEXPORT void JNICALL Java_jogamp_nativewindow_ios_IOSUtil_CreateGLViewDemoA0
+  (JNIEnv *env, jclass unused)
+{
+#ifdef EAGL_TEST
+    CGRect boundsW2 = CGRectMake(500, 10, 320, 320);
+    CGRect boundsV2 = CGRectMake(0, 0, 320, 320);
+    UIWindow* window2 = [[[[UIWindow alloc] initWithFrame:boundsW2] autorelease] retain];
+    window2.rootViewController = [[[UIViewController alloc] initWithNibName:nil bundle:nil] autorelease];
+    [window2 setBackgroundColor: [UIColor redColor]];
+    [window2 makeKeyAndVisible];
+
+    GLView *glView = [[GLView alloc] initWithFrame:boundsV2];
+    [window2 addSubview:glView];
+#endif /* EAGL_TEST */
+}
+