Bug 934, Bug 935: NEWT: Add support for custom Application/Window and Pointer Icons

- Utilizing JOGL's PNG decoder for all icons, if available.

- Application/window icons:
  - Providing default application/window icons in 16x16 and 32x32 size
  - NewtFactory.setWindowIcons(..) or property 'newt.window.icons' maybe used to override default icons.
  - Using icons at application/window instantiation

- Display.PointerIcons:
  - NativeWindow Win32 WindowClass no more references a default cursor
    in favor of fine grained cursor control [in NEWT]

  - Display provides create/destroy methods,
    where display destruction also releases open PointerIcon references.

  - Window.setPointerIcon(..) sets custom PointerIcon

- Implemented Platforms
  - X11
  - Windows
  - OSX

- Manual Test: TestGearsES2NEWT (Press 'c')

1 files changed, 52 insertions, 0 deletions

diff --git a/src/newt/native/X11Display.c b/src/newt/native/X11Display.c
index e2392a113..19e733111 100644
--- a/src/newt/native/X11Display.c
+++ b/src/newt/native/X11Display.c
@@ -28,6 +28,8 @@
 
 #include "X11Common.h"
 
+#include <X11/Xcursor/Xcursor.h>
+
 // #include <X11/XKBlib.h> // XKB disabled for now
 
 jclass X11NewtWindowClazz = NULL;
@@ -670,4 +672,54 @@ JNIEXPORT void JNICALL Java_jogamp_newt_driver_x11_DisplayDriver_DispatchMessage
     }
 }
 
+/*
+ * Class:     Java_jogamp_newt_driver_x11_DisplayDriver
+ * Method:    createPointerIcon0
+ * Signature: (JJILjava/lang/Object;I)V
+ */
+JNIEXPORT jlong JNICALL Java_jogamp_newt_driver_x11_DisplayDriver_createPointerIcon0
+  (JNIEnv *env, jclass clazz, jlong display, jobject data, jint data_offset, jint width, jint height, jint hotX, jint hotY)
+{
+    Cursor c;
+
+    if( 0 != data ) {
+        Display * dpy = (Display *) (intptr_t) display;
+        char * data_ptr = (char *) (*env)->GetDirectBufferAddress(env, data) + data_offset;
+        XcursorImage ci;
+        ci.version = 1; // XCURSOR_IMAGE_VERSION;
+        ci.size = width; // nominal size (assume square ..)
+        ci.width = width;
+        ci.height = height;
+        ci.xhot = hotX;
+        ci.yhot = hotY;
+        ci.delay = 0;
+        ci.pixels = (XcursorPixel *)(intptr_t)data_ptr;
+
+        c = XcursorImageLoadCursor (dpy, &ci);
+
+        DBG_PRINT( "X11: createPointerIcon0: %p %dx%d %d/%d -> %p\n", data_ptr, width, height, hotX, hotY, (void *)c);
+
+    } else {
+        c = 0;
+    }
+    return (jlong) (intptr_t) c;
+}
+
+/*
+ * Class:     Java_jogamp_newt_driver_x11_DisplayDriver
+ * Method:    destroyPointerIcon0
+ * Signature: (JJILjava/lang/Object;I)V
+ */
+JNIEXPORT void JNICALL Java_jogamp_newt_driver_x11_DisplayDriver_destroyPointerIcon0
+  (JNIEnv *env, jclass clazz, jlong display, jlong handle)
+{
+    Display * dpy = (Display *) (intptr_t) display;
+
+    if( 0 != handle ) {
+        Cursor c = (Cursor) (intptr_t) handle;
+        DBG_PRINT( "X11: destroyPointerIcon0: %p\n", (void *)c);
+        XFreeCursor(dpy, c);
+    }
+}
+