OSX/SWT: Adding OSXUtil: RunOnMainThread(), IsMainThread() / Utilizing those for SWT access/calls

Adding OSXUtil: RunOnMainThread(), IsMainThread()
- Issuing a native call where the user Runnable is to be performed on the main thread
- Enable query if we are on the main thread.

Utilizing those for SWT access/calls
- Using the above to call all SWT functions on the main thread if required (incomplete)

TODO/Issues:
- JOGL OSX CGL Context fails, ie expecting NS, but having CGL

1 files changed, 217 insertions, 0 deletions

diff --git a/src/nativewindow/native/macosx/OSXmisc.m b/src/nativewindow/native/macosx/OSXmisc.m
new file mode 100644
index 000000000..af71b4a0a
--- /dev/null
+++ b/src/nativewindow/native/macosx/OSXmisc.m
@@ -0,0 +1,217 @@
+/**
+ * Copyright 2011 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 <AppKit/AppKit.h>
+
+#include "NativewindowCommon.h"
+#include "jogamp_nativewindow_macosx_OSXUtil.h"
+
+static const char * const ClazzNameRunnable = "java/lang/Runnable";
+static jmethodID runnableRunID = NULL;
+
+static const char * const ClazzNamePoint = "javax/media/nativewindow/util/Point";
+static const char * const ClazzAnyCstrName = "<init>";
+static const char * const ClazzNamePointCstrSignature = "(II)V";
+static jclass pointClz = NULL;
+static jmethodID pointCstr = NULL;
+
+static int _initialized=0;
+
+JNIEXPORT jboolean JNICALL 
+Java_jogamp_nativewindow_macosx_OSXUtil_initIDs0(JNIEnv *env, jclass _unused) {
+    if(0==_initialized) {
+        jclass c;
+        c = (*env)->FindClass(env, ClazzNamePoint);
+        if(NULL==c) {
+            NativewindowCommon_FatalError(env, "FatalError Java_jogamp_newt_driver_macosx_MacWindow_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_newt_driver_macosx_MacWindow_initIDs0: can't use %s", ClazzNamePoint);
+        }
+        pointCstr = (*env)->GetMethodID(env, pointClz, ClazzAnyCstrName, ClazzNamePointCstrSignature);
+        if(NULL==pointCstr) {
+            NativewindowCommon_FatalError(env, "FatalError Java_jogamp_newt_driver_macosx_MacWindow_initIDs0: can't fetch %s.%s %s",
+                ClazzNamePoint, ClazzAnyCstrName, ClazzNamePointCstrSignature);
+        }
+
+        c = (*env)->FindClass(env, ClazzNameRunnable);
+        if(NULL==c) {
+            NativewindowCommon_FatalError(env, "FatalError Java_jogamp_newt_driver_macosx_MacWindow_initIDs0: can't find %s", ClazzNameRunnable);
+        }
+        runnableRunID = (*env)->GetMethodID(env, c, "run", "()V");
+        if(NULL==runnableRunID) {
+            NativewindowCommon_FatalError(env, "FatalError Java_jogamp_newt_driver_macosx_MacWindow_initIDs0: can't fetch %s.run()V", ClazzNameRunnable);
+        }
+        _initialized=1;
+    }
+    return JNI_TRUE;
+}
+
+/*
+ * Class:     Java_jogamp_nativewindow_macosx_OSXUtil
+ * Method:    getLocationOnScreenImpl0
+ * Signature: (JII)Ljavax/media/nativewindow/util/Point;
+ */
+JNIEXPORT jobject JNICALL Java_jogamp_nativewindow_macosx_OSXUtil_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 is 0/0 bottom-left space naturally
+     */
+    NSRect r;
+    int dest_x=-1;
+    int dest_y=-1;
+
+    NSObject *nsObj = (NSObject*) ((intptr_t) winOrView);
+    NSWindow* win = NULL;
+    NSView* view = NULL;
+
+    if( [nsObj isKindOfClass:[NSWindow class]] ) {
+        win = (NSWindow*) nsObj;
+        view = [win contentView];
+    } else if( nsObj != NULL && [nsObj isKindOfClass:[NSView class]] ) {
+        view = (NSView*) nsObj;
+        win = [view window];
+    } else {
+        NativewindowCommon_throwNewRuntimeException(env, "neither win not view %p\n", nsObj);
+    }
+    NSScreen* screen = [win screen];
+    NSRect screenRect = [screen frame];
+
+    NSRect viewFrame = [view frame];
+
+    r.origin.x = src_x;
+    r.origin.y = viewFrame.size.height - src_y; // y-flip for 0/0 top-left
+    r.size.width = 0;
+    r.size.height = 0;
+    // NSRect rS = [win convertRectToScreen: r]; // 10.7
+    NSPoint oS = [win convertBaseToScreen: r.origin];
+    dest_x = (int) oS.x;
+    dest_y = (int) screenRect.origin.y + screenRect.size.height - oS.y;
+
+    jobject res = (*env)->NewObject(env, pointClz, pointCstr, (jint)dest_x, (jint)dest_y);
+
+    [pool release];
+
+    return res;
+}
+
+@interface MainRunnable : NSObject
+
+{
+    JavaVM *jvmHandle;
+    int jvmVersion;
+    jobject runnableObj;
+}
+
+- (id) initWithRunnable: (jobject)runnable jvmHandle: (JavaVM*)jvm jvmVersion: (int)jvmVers;
+- (void) jRun;
+
+@end
+
+@implementation MainRunnable
+
+- (id) initWithRunnable: (jobject)runnable jvmHandle: (JavaVM*)jvm jvmVersion: (int)jvmVers
+{
+    jvmHandle = jvm;
+    jvmVersion = jvmVers;
+    runnableObj = runnable;
+    return [super init];
+}
+
+- (void) jRun
+{
+    int shallBeDetached = 0;
+    JNIEnv* env = NativewindowCommon_GetJNIEnv(jvmHandle, jvmVersion, &shallBeDetached);
+    if(NULL!=env) {
+        (*env)->CallVoidMethod(env, runnableObj, runnableRunID);
+
+        if (shallBeDetached) {
+            (*jvmHandle)->DetachCurrentThread(jvmHandle);
+        }
+    }
+}
+
+@end
+
+
+/*
+ * Class:     Java_jogamp_nativewindow_macosx_OSXUtil
+ * Method:    RunOnMainThread0
+ * Signature: (ZLjava/lang/Runnable;)V
+ */
+JNIEXPORT void JNICALL Java_jogamp_nativewindow_macosx_OSXUtil_RunOnMainThread0
+  (JNIEnv *env, jclass unused, jboolean jwait, jobject runnable)
+{
+    NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
+
+    if ( NO == [NSThread isMainThread] ) {
+        jobject runnableGlob = (*env)->NewGlobalRef(env, runnable);
+
+        BOOL wait = (JNI_TRUE == jwait) ? YES : NO;
+        JavaVM *jvmHandle = NULL;
+        int jvmVersion = 0;
+
+        if(0 != (*env)->GetJavaVM(env, &jvmHandle)) {
+            jvmHandle = NULL;
+        } else {
+            jvmVersion = (*env)->GetVersion(env);
+        }
+
+        MainRunnable * mr = [[MainRunnable alloc] initWithRunnable: runnableGlob jvmHandle: jvmHandle jvmVersion: jvmVersion];
+        [mr performSelectorOnMainThread:@selector(jRun) withObject:nil waitUntilDone:wait];
+        [mr release];
+
+        (*env)->DeleteGlobalRef(env, runnableGlob);
+    } else {
+        (*env)->CallVoidMethod(env, runnable, runnableRunID);
+    }
+
+    [pool release];
+}
+
+/*
+ * Class:     Java_jogamp_nativewindow_macosx_OSXUtil
+ * Method:    RunOnMainThread0
+ * Signature: (ZLjava/lang/Runnable;)V
+ */
+JNIEXPORT jboolean JNICALL Java_jogamp_nativewindow_macosx_OSXUtil_IsMainThread0
+  (JNIEnv *env, jclass unused)
+{
+    return ( [NSThread isMainThread] == YES ) ? JNI_TRUE : JNI_FALSE ;
+}