iOS: Initial working commit supporting iOS (ipad pro 11)

using our OpenJFK 9 x86_64 and arm64 build.

Test demo class is 'com.jogamp.opengl.demos.ios.Hello',
residing in the new demo folder 'src/demos/com/jogamp/opengl/demos/ios/Hello.java'.

This commit does not yet include a working NEWT
specialization for iOS, but it shall followup soon.

Instead this commit demonstrates JOGL operating on
native UIWindow, UIView and CAEAGLLayer as provided by
Nativewindow's IOSUtil.

Test Video https://www.youtube.com/watch?v=Z4lUQNFTGMI

+++

Notable bug: The FBO used and sharing the COLORBUFFER RENDERBUFFER
memory resources with CAEAGLLayer to be displayed in the UIView
seemingly cannot handle GL_DEPTH_COMPONENT16, GL_DEPTH_COMPONENT24
or GL_DEPTH_COMPONENT32 depth buffer - none at all (Device + Simulation).

Therefor the default demo GLEventListener chosen here
don't require a depth buffer ;-)

This issue can hopefully be mitigated with other means
than using a flat FBO sink similar to FBO multisampling.

1 files changed, 152 insertions, 0 deletions

diff --git a/src/newt/native/IOSNewtUIWindow.h b/src/newt/native/IOSNewtUIWindow.h
new file mode 100644
index 000000000..27ca7f3c7
--- /dev/null
+++ b/src/newt/native/IOSNewtUIWindow.h
@@ -0,0 +1,152 @@
+/**
+ * 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.
+ */
+
+#import <UIKit/UIKit.h>
+#import <QuartzCore/QuartzCore.h>
+#import <pthread.h>
+#import "jni.h"
+
+#include "NewtCommon.h"
+
+// #define VERBOSE_ON 1
+
+#ifdef VERBOSE_ON
+    #define DBG_PRINT(...) NSLog(@ __VA_ARGS__) ; fflush(stderr)
+    // #define DBG_PRINT(...) fprintf(stderr, __VA_ARGS__); fflush(stderr)
+#else
+    #define DBG_PRINT(...)
+#endif
+
+// #define DBG_LIFECYCLE 1
+
+@interface NewtUIView : UIView
+{
+    jobject javaWindowObject;
+
+    volatile BOOL destroyNotifySent;
+    volatile int softLockCount;
+    pthread_mutex_t softLockSync;
+
+    BOOL modsDown[4]; // shift, ctrl, alt/option, win/command
+}
+
+- (id)initWithFrame:(CGRect)frameRect;
+
+#ifdef DBG_LIFECYCLE
+- (void) release;
+#endif
+- (void) dealloc;
+
+/* Register or deregister (NULL) the java Window object, 
+   ie, if NULL, no events are send */
+- (void) setJavaWindowObject: (jobject) javaWindowObj;
+- (jobject) getJavaWindowObject;
+
+- (void) setDestroyNotifySent: (BOOL) v;
+- (BOOL) getDestroyNotifySent;
+
+- (BOOL) softLock;
+- (BOOL) softUnlock;
+
+- (void) drawRect:(CGRect)dirtyRect;
+- (BOOL) acceptsFirstResponder;
+- (BOOL) becomeFirstResponder;
+- (BOOL) resignFirstResponder;
+
+- (void) sendMouseEvent: (UIEvent*) event eventType: (jshort) evType;
+- (CGPoint) screenPos2NewtClientWinPos: (CGPoint) p;
+
+- (void) handleFlagsChanged:(NSUInteger) mods;
+- (void) handleFlagsChanged:(int) keyMask keyIndex: (int) keyIdx keyCode: (int) keyCode modifiers: (NSUInteger) mods;
+- (void) sendKeyEvent: (UIEvent*) event eventType: (jshort) evType;
+- (void) sendKeyEvent: (jshort) keyCode characters: (NSString*) chars modifiers: (NSUInteger)mods eventType: (jshort) evType;
+
+@end
+
+@interface NewtUIWindow : UIWindow
+{
+    BOOL realized;
+    jboolean withinLiveResize;
+@public
+    BOOL hasPresentationSwitch;
+    NSUInteger defaultPresentationOptions;
+    NSUInteger fullscreenPresentationOptions;
+    BOOL isFullscreenWindow;
+    int cachedInsets[4]; // l, r, t, b
+}
+
++ (BOOL) initNatives: (JNIEnv*) env forClass: (jobject) clazz;
+
+- (id) initWithFrame: (CGRect) contentRect
+       styleMask: (NSUInteger) windowStyle
+       backing: (NSUInteger) bufferingType
+       defer: (BOOL) deferCreation
+       isFullscreenWindow:(BOOL)isfs;
+#ifdef DBG_LIFECYCLE
+- (void) release;
+#endif
+- (void) dealloc;
+- (void) setRealized: (BOOL)v;
+- (BOOL) isRealized;
+
+- (void) setAlwaysOn: (BOOL)top bottom:(BOOL)bottom;
+
+- (void) updateInsets: (JNIEnv*) env jwin: (jobject) javaWin;
+- (void) updateSizePosInsets: (JNIEnv*) env jwin: (jobject) javaWin defer: (jboolean)defer;
+- (void) attachToParent: (UIWindow*) parent;
+- (void) detachFromParent: (UIWindow*) parent;
+
+- (CGPoint) newtRelClientTLWinPos2AbsTLScreenPos: (CGPoint) p;
+- (CGSize) newtClientSize2TLSize: (CGSize) nsz;
+- (CGPoint) getLocationOnScreen: (CGPoint) p;
+
+- (void) focusChanged: (BOOL) gained;
+
+- (void) flagsChanged: (UIEvent *) theEvent;
+- (BOOL) acceptsMouseMovedEvents;
+- (BOOL) acceptsFirstResponder;
+- (BOOL) becomeFirstResponder;
+- (BOOL) resignFirstResponder;
+- (BOOL) canBecomeKeyWindow;
+- (void) becomeKeyWindow;
+- (void) resignKeyWindow;
+- (void) windowDidBecomeKey: (NSNotification *) notification;
+- (void) windowDidResignKey: (NSNotification *) notification;
+
+- (void) windowWillStartLiveResize: (NSNotification *) notification;
+- (void) windowDidEndLiveResize: (NSNotification *) notification;
+- (CGSize) windowWillResize: (UIWindow *)sender toSize:(CGSize)frameSize;
+- (void) windowDidResize: (NSNotification*) notification;
+- (void) sendResizeEvent;
+
+- (void) windowDidMove: (NSNotification*) notification;
+- (BOOL) windowClosingImpl: (BOOL) force;
+- (BOOL) windowShouldClose: (id) sender;
+- (void) windowWillClose: (NSNotification*) notification;
+
+@end