1 /*
   2  * Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 
  27 #import "jni_util.h"
  28 
  29 #import <JavaNativeFoundation/JavaNativeFoundation.h>
  30 #import <ApplicationServices/ApplicationServices.h>
  31 
  32 #import "LWCToolkit.h"
  33 #import "sun_lwawt_macosx_CRobot.h"
  34 #import "java_awt_event_InputEvent.h"
  35 #import "sizecalc.h"
  36 
  37 
  38 // Starting number for event numbers generated by Robot.
  39 // Apple docs don't mention at all what are the requirements
  40 // for these numbers. It seems that they must be higher
  41 // than event numbers from real events, which start at some
  42 // value close to zero. There is no API for obtaining current
  43 // event number, so we have to start from some random number.
  44 // 32000 as starting value works for me, let's hope that it will
  45 // work for others as well.
  46 #define ROBOT_EVENT_NUMBER_START 32000
  47 
  48 #define k_JAVA_ROBOT_WHEEL_COUNT 1
  49 
  50 #if !defined(kCGBitmapByteOrder32Host)
  51 #define kCGBitmapByteOrder32Host 0
  52 #endif
  53 
  54 // In OS X, left and right mouse button share the same click count.
  55 // That is, if one starts clicking the left button rapidly and then
  56 // switches to the right button, then the click count will continue
  57 // increasing, without dropping to 1 in between. The middle button,
  58 // however, has its own click count.
  59 // For robot, we aren't going to emulate all that complexity. All our
  60 // synhtetic clicks share the same click count.
  61 static int gsClickCount;
  62 static NSTimeInterval gsLastClickTime;
  63 
  64 // Apparently, for mouse up/down events we have to set an event number
  65 // that is incremented on each button press. Otherwise, strange things
  66 // happen with z-order.
  67 static int gsEventNumber;
  68 static int* gsButtonEventNumber;
  69 
  70 static inline CGKeyCode GetCGKeyCode(jint javaKeyCode);
  71 
  72 static void PostMouseEvent(const CGPoint point, CGMouseButton button,
  73                            CGEventType type, int clickCount, int eventNumber);
  74 
  75 static int GetClickCount(BOOL isDown);
  76 
  77 static void
  78 CreateJavaException(JNIEnv* env, CGError err)
  79 {
  80     // Throw a java exception indicating what is wrong.
  81     NSString* s = [NSString stringWithFormat:@"Robot: CGError: %d", err];
  82     (*env)->ThrowNew(env, (*env)->FindClass(env, "java/awt/AWTException"),
  83                      [s UTF8String]);
  84 }
  85 
  86 /*
  87  * Class:     sun_lwawt_macosx_CRobot
  88  * Method:    initRobot
  89  * Signature: (V)V
  90  */
  91 JNIEXPORT void JNICALL
  92 Java_sun_lwawt_macosx_CRobot_initRobot
  93 (JNIEnv *env, jobject peer)
  94 {
  95     // Set things up to let our app act like a synthetic keyboard and mouse.
  96     // Always set all states, in case Apple ever changes default behaviors.
  97     static int setupDone = 0;
  98     if (!setupDone) {
  99         int i;
 100         jint* tmp;
 101         jboolean copy = JNI_FALSE;
 102 
 103         setupDone = 1;
 104         // Don't block local events after posting ours
 105         CGSetLocalEventsSuppressionInterval(0.0);
 106 
 107         // Let our event's modifier key state blend with local hardware events
 108         CGEnableEventStateCombining(TRUE);
 109 
 110         // Don't let our events block local hardware events
 111         CGSetLocalEventsFilterDuringSupressionState(
 112                                     kCGEventFilterMaskPermitAllEvents,
 113                                     kCGEventSupressionStateSupressionInterval);
 114         CGSetLocalEventsFilterDuringSupressionState(
 115                                     kCGEventFilterMaskPermitAllEvents,
 116                                     kCGEventSupressionStateRemoteMouseDrag);
 117 
 118         gsClickCount = 0;
 119         gsLastClickTime = 0;
 120         gsEventNumber = ROBOT_EVENT_NUMBER_START;
 121 
 122         gsButtonEventNumber = (int*)SAFE_SIZE_ARRAY_ALLOC(malloc, sizeof(int), gNumberOfButtons);
 123         if (gsButtonEventNumber == NULL) {
 124             JNU_ThrowOutOfMemoryError(env, NULL);
 125             return;
 126         }
 127 
 128         for (i = 0; i < gNumberOfButtons; ++i) {
 129             gsButtonEventNumber[i] = ROBOT_EVENT_NUMBER_START;
 130         }
 131     }
 132 }
 133 
 134 /*
 135  * Class:     sun_lwawt_macosx_CRobot
 136  * Method:    mouseEvent
 137  * Signature: (IIIIZZ)V
 138  */
 139 JNIEXPORT void JNICALL
 140 Java_sun_lwawt_macosx_CRobot_mouseEvent
 141 (JNIEnv *env, jobject peer,
 142  jint displayID, jint mouseLastX, jint mouseLastY, jint buttonsState,
 143  jboolean isButtonsDownState, jboolean isMouseMove)
 144 {
 145     JNF_COCOA_ENTER(env);
 146 
 147     // This is the native method called when Robot mouse events occur.
 148     // The CRobot tracks the mouse position, and which button was
 149     // pressed. The peer also tracks the mouse button desired state,
 150     // the appropriate key modifier state, and whether the mouse action
 151     // is simply a mouse move with no mouse button state changes.
 152 
 153     // volatile, otherwise it warns that it might be clobbered by 'longjmp'
 154     volatile CGPoint point;
 155 
 156     point.x = mouseLastX;
 157     point.y = mouseLastY;
 158 
 159     __block CGMouseButton button = kCGMouseButtonLeft;
 160     __block CGEventType type = kCGEventMouseMoved;
 161 
 162     void (^HandleRobotButton)(CGMouseButton, CGEventType, CGEventType, CGEventType) =
 163         ^(CGMouseButton cgButton, CGEventType cgButtonUp, CGEventType cgButtonDown,
 164           CGEventType cgButtonDragged) {
 165 
 166             button = cgButton;
 167             type = cgButtonUp;
 168 
 169             if (isButtonsDownState) {
 170                 if (isMouseMove) {
 171                     type = cgButtonDragged;
 172                 } else {
 173                     type = cgButtonDown;
 174                 }
 175             }
 176         };
 177 
 178     // Left
 179     if (buttonsState & java_awt_event_InputEvent_BUTTON1_MASK ||
 180         buttonsState & java_awt_event_InputEvent_BUTTON1_DOWN_MASK ) {
 181 
 182         HandleRobotButton(kCGMouseButtonLeft, kCGEventLeftMouseUp,
 183                           kCGEventLeftMouseDown, kCGEventLeftMouseDragged);
 184     }
 185 
 186     // Other
 187     if (buttonsState & java_awt_event_InputEvent_BUTTON2_MASK ||
 188         buttonsState & java_awt_event_InputEvent_BUTTON2_DOWN_MASK ) {
 189 
 190         HandleRobotButton(kCGMouseButtonCenter, kCGEventOtherMouseUp,
 191                           kCGEventOtherMouseDown, kCGEventOtherMouseDragged);
 192     }
 193 
 194     // Right
 195     if (buttonsState & java_awt_event_InputEvent_BUTTON3_MASK ||
 196         buttonsState & java_awt_event_InputEvent_BUTTON3_DOWN_MASK ) {
 197 
 198         HandleRobotButton(kCGMouseButtonRight, kCGEventRightMouseUp,
 199                           kCGEventRightMouseDown, kCGEventRightMouseDragged);
 200     }
 201 
 202     // Extra
 203     if (gNumberOfButtons > 3) {
 204         int extraButton;
 205         for (extraButton = 3; extraButton < gNumberOfButtons; ++extraButton) {
 206             if ((buttonsState & gButtonDownMasks[extraButton])) {
 207                 HandleRobotButton(extraButton, kCGEventOtherMouseUp,
 208                             kCGEventOtherMouseDown, kCGEventOtherMouseDragged);
 209             }
 210         }
 211     }
 212 
 213     int clickCount = 0;
 214     int eventNumber = gsEventNumber;
 215 
 216     if (isMouseMove) {
 217         // any mouse movement resets click count
 218         gsLastClickTime = 0;
 219     } else {
 220         clickCount = GetClickCount(isButtonsDownState);
 221 
 222         if (isButtonsDownState) {
 223             gsButtonEventNumber[button] = gsEventNumber++;
 224         }
 225         eventNumber = gsButtonEventNumber[button];
 226     }
 227 
 228     PostMouseEvent(point, button, type, clickCount, eventNumber);
 229 
 230     JNF_COCOA_EXIT(env);
 231 }
 232 
 233 /*
 234  * Class:     sun_lwawt_macosx_CRobot
 235  * Method:    mouseWheel
 236  * Signature: (I)V
 237  */
 238 JNIEXPORT void JNICALL
 239 Java_sun_lwawt_macosx_CRobot_mouseWheel
 240 (JNIEnv *env, jobject peer, jint wheelAmt)
 241 {
 242     CGEventRef event = CGEventCreateScrollWheelEvent(NULL,
 243                                             kCGScrollEventUnitLine,
 244                                             k_JAVA_ROBOT_WHEEL_COUNT, wheelAmt);
 245 
 246     if (event != NULL) {
 247         CGEventPost(kCGSessionEventTap, event);
 248         CFRelease(event);
 249     }
 250 }
 251 
 252 /*
 253  * Class:     sun_lwawt_macosx_CRobot
 254  * Method:    keyEvent
 255  * Signature: (IZ)V
 256  */
 257 JNIEXPORT void JNICALL
 258 Java_sun_lwawt_macosx_CRobot_keyEvent
 259 (JNIEnv *env, jobject peer, jint javaKeyCode, jboolean keyPressed)
 260 {
 261     /*
 262      * Well, using CGEventCreateKeyboardEvent/CGEventPost would have been
 263      * a better solution, however, it gives me all kinds of trouble and I have
 264      * no idea how to solve them without inserting delays between simulated
 265      * events. So, I've ended up disabling it and opted for another approach
 266      * that uses Accessibility API instead.
 267      */
 268     CGKeyCode keyCode = GetCGKeyCode(javaKeyCode);
 269     AXUIElementRef elem = AXUIElementCreateSystemWide();
 270     AXUIElementPostKeyboardEvent(elem, (CGCharCode)0, keyCode, keyPressed);
 271     CFRelease(elem);
 272 
 273 
 274 #if 0
 275     CGEventRef event = CGEventCreateKeyboardEvent(NULL, keyCode, keyPressed);
 276     if (event != NULL) {
 277         CGEventPost(kCGSessionEventTap, event);
 278         CFRelease(event);
 279     }
 280 #endif
 281 }
 282 
 283 /*
 284  * Class:     sun_lwawt_macosx_CRobot
 285  * Method:    nativeGetScreenPixels
 286  * Signature: (IIIII[I)V
 287  */
 288 JNIEXPORT void JNICALL
 289 Java_sun_lwawt_macosx_CRobot_nativeGetScreenPixels
 290 (JNIEnv *env, jobject peer,
 291  jint x, jint y, jint width, jint height, jintArray pixels)
 292 {
 293     JNF_COCOA_ENTER(env);
 294 
 295     jint picX = x;
 296     jint picY = y;
 297     jint picWidth = width;
 298     jint picHeight = height;
 299 
 300     CGRect screenRect = CGRectMake(picX, picY, picWidth, picHeight);
 301     CGImageRef screenPixelsImage = CGWindowListCreateImage(screenRect,
 302                                         kCGWindowListOptionOnScreenOnly,
 303                                         kCGNullWindowID, kCGWindowImageDefault);
 304 
 305     if (screenPixelsImage == NULL) {
 306         return;
 307     }
 308 
 309     // get a pointer to the Java int array
 310     void *jPixelData = (*env)->GetPrimitiveArrayCritical(env, pixels, 0);
 311     CHECK_NULL(jPixelData);
 312 
 313     // create a graphics context around the Java int array
 314     CGColorSpaceRef picColorSpace = CGColorSpaceCreateWithName(
 315                                             kCGColorSpaceGenericRGB);
 316     CGContextRef jPicContextRef = CGBitmapContextCreate(
 317                                             jPixelData,
 318                                             picWidth, picHeight,
 319                                             8, picWidth * sizeof(jint),
 320                                             picColorSpace,
 321                                             kCGBitmapByteOrder32Host |
 322                                             kCGImageAlphaPremultipliedFirst);
 323 
 324     CGColorSpaceRelease(picColorSpace);
 325 
 326     // flip, scale, and color correct the screen image into the Java pixels
 327     CGRect bounds = { { 0, 0 }, { picWidth, picHeight } };
 328     CGContextDrawImage(jPicContextRef, bounds, screenPixelsImage);
 329     CGContextFlush(jPicContextRef);
 330 
 331     // cleanup
 332     CGContextRelease(jPicContextRef);
 333     CGImageRelease(screenPixelsImage);
 334 
 335     // release the Java int array back up to the JVM
 336     (*env)->ReleasePrimitiveArrayCritical(env, pixels, jPixelData, 0);
 337 
 338     JNF_COCOA_EXIT(env);
 339 }
 340 
 341 /****************************************************
 342  * Helper methods
 343  ****************************************************/
 344 
 345 static void PostMouseEvent(const CGPoint point, CGMouseButton button,
 346                            CGEventType type, int clickCount, int eventNumber)
 347 {
 348     CGEventRef mouseEvent = CGEventCreateMouseEvent(NULL, type, point, button);
 349     if (mouseEvent != NULL) {
 350         CGEventSetIntegerValueField(mouseEvent, kCGMouseEventClickState, clickCount);
 351         CGEventSetIntegerValueField(mouseEvent, kCGMouseEventNumber, eventNumber);
 352         CGEventPost(kCGSessionEventTap, mouseEvent);
 353         CFRelease(mouseEvent);
 354     }
 355 }
 356 
 357 // NOTE: Don't modify this table directly. It is machine generated. See below.
 358 static const unsigned char javaToMacKeyCode[] = {
 359     127,    //     0     0 VK_UNDEFINED                      No_Equivalent
 360     127,    //     1   0x1 Not_Used
 361     127,    //     2   0x2 Not_Used
 362     127,    //     3   0x3 VK_CANCEL                         No_Equivalent
 363     127,    //     4   0x4 Not_Used
 364     127,    //     5   0x5 Not_Used
 365     127,    //     6   0x6 Not_Used
 366     127,    //     7   0x7 Not_Used
 367      51,    //     8   0x8 VK_BACK_SPACE
 368      48,    //     9   0x9 VK_TAB
 369      36,    //    10   0xa VK_ENTER
 370     127,    //    11   0xb Not_Used
 371      71,    //    12   0xc VK_CLEAR
 372     127,    //    13   0xd Not_Used
 373     127,    //    14   0xe Not_Used
 374     127,    //    15   0xf Not_Used
 375      56,    //    16  0x10 VK_SHIFT
 376      59,    //    17  0x11 VK_CONTROL
 377      58,    //    18  0x12 VK_ALT
 378     113,    //    19  0x13 VK_PAUSE
 379      57,    //    20  0x14 VK_CAPS_LOCK
 380     127,    //    21  0x15 VK_KANA                           No_Equivalent
 381     127,    //    22  0x16 Not_Used
 382     127,    //    23  0x17 Not_Used
 383     127,    //    24  0x18 VK_FINAL                          No_Equivalent
 384     127,    //    25  0x19 VK_KANJI                          No_Equivalent
 385     127,    //    26  0x1a Not_Used
 386      53,    //    27  0x1b VK_ESCAPE
 387     127,    //    28  0x1c VK_CONVERT                        No_Equivalent
 388     127,    //    29  0x1d VK_NONCONVERT                     No_Equivalent
 389     127,    //    30  0x1e VK_ACCEPT                         No_Equivalent
 390     127,    //    31  0x1f VK_MODECHANGE                     No_Equivalent
 391      49,    //    32  0x20 VK_SPACE
 392     116,    //    33  0x21 VK_PAGE_UP
 393     121,    //    34  0x22 VK_PAGE_DOWN
 394     119,    //    35  0x23 VK_END
 395     115,    //    36  0x24 VK_HOME
 396     123,    //    37  0x25 VK_LEFT
 397     126,    //    38  0x26 VK_UP
 398     124,    //    39  0x27 VK_RIGHT
 399     125,    //    40  0x28 VK_DOWN
 400     127,    //    41  0x29 Not_Used
 401     127,    //    42  0x2a Not_Used
 402     127,    //    43  0x2b Not_Used
 403      43,    //    44  0x2c VK_COMMA
 404      27,    //    45  0x2d VK_MINUS
 405      47,    //    46  0x2e VK_PERIOD
 406      44,    //    47  0x2f VK_SLASH
 407      29,    //    48  0x30 VK_0
 408      18,    //    49  0x31 VK_1
 409      19,    //    50  0x32 VK_2
 410      20,    //    51  0x33 VK_3
 411      21,    //    52  0x34 VK_4
 412      23,    //    53  0x35 VK_5
 413      22,    //    54  0x36 VK_6
 414      26,    //    55  0x37 VK_7
 415      28,    //    56  0x38 VK_8
 416      25,    //    57  0x39 VK_9
 417     127,    //    58  0x3a Not_Used
 418      41,    //    59  0x3b VK_SEMICOLON
 419     127,    //    60  0x3c Not_Used
 420      24,    //    61  0x3d VK_EQUALS
 421     127,    //    62  0x3e Not_Used
 422     127,    //    63  0x3f Not_Used
 423     127,    //    64  0x40 Not_Used
 424       0,    //    65  0x41 VK_A
 425      11,    //    66  0x42 VK_B
 426       8,    //    67  0x43 VK_C
 427       2,    //    68  0x44 VK_D
 428      14,    //    69  0x45 VK_E
 429       3,    //    70  0x46 VK_F
 430       5,    //    71  0x47 VK_G
 431       4,    //    72  0x48 VK_H
 432      34,    //    73  0x49 VK_I
 433      38,    //    74  0x4a VK_J
 434      40,    //    75  0x4b VK_K
 435      37,    //    76  0x4c VK_L
 436      46,    //    77  0x4d VK_M
 437      45,    //    78  0x4e VK_N
 438      31,    //    79  0x4f VK_O
 439      35,    //    80  0x50 VK_P
 440      12,    //    81  0x51 VK_Q
 441      15,    //    82  0x52 VK_R
 442       1,    //    83  0x53 VK_S
 443      17,    //    84  0x54 VK_T
 444      32,    //    85  0x55 VK_U
 445       9,    //    86  0x56 VK_V
 446      13,    //    87  0x57 VK_W
 447       7,    //    88  0x58 VK_X
 448      16,    //    89  0x59 VK_Y
 449       6,    //    90  0x5a VK_Z
 450      33,    //    91  0x5b VK_OPEN_BRACKET
 451      42,    //    92  0x5c VK_BACK_SLASH
 452      30,    //    93  0x5d VK_CLOSE_BRACKET
 453     127,    //    94  0x5e Not_Used
 454     127,    //    95  0x5f Not_Used
 455      82,    //    96  0x60 VK_NUMPAD0
 456      83,    //    97  0x61 VK_NUMPAD1
 457      84,    //    98  0x62 VK_NUMPAD2
 458      85,    //    99  0x63 VK_NUMPAD3
 459      86,    //   100  0x64 VK_NUMPAD4
 460      87,    //   101  0x65 VK_NUMPAD5
 461      88,    //   102  0x66 VK_NUMPAD6
 462      89,    //   103  0x67 VK_NUMPAD7
 463      91,    //   104  0x68 VK_NUMPAD8
 464      92,    //   105  0x69 VK_NUMPAD9
 465      67,    //   106  0x6a VK_MULTIPLY
 466      69,    //   107  0x6b VK_ADD
 467     127,    //   108  0x6c VK_SEPARATER                      No_Equivalent
 468      78,    //   109  0x6d VK_SUBTRACT
 469      65,    //   110  0x6e VK_DECIMAL
 470      75,    //   111  0x6f VK_DIVIDE
 471     122,    //   112  0x70 VK_F1
 472     120,    //   113  0x71 VK_F2
 473      99,    //   114  0x72 VK_F3
 474     118,    //   115  0x73 VK_F4
 475      96,    //   116  0x74 VK_F5
 476      97,    //   117  0x75 VK_F6
 477      98,    //   118  0x76 VK_F7
 478     100,    //   119  0x77 VK_F8
 479     101,    //   120  0x78 VK_F9
 480     109,    //   121  0x79 VK_F10
 481     103,    //   122  0x7a VK_F11
 482     111,    //   123  0x7b VK_F12
 483     127,    //   124  0x7c Not_Used
 484     127,    //   125  0x7d Not_Used
 485     127,    //   126  0x7e Not_Used
 486     117,    //   127  0x7f VK_DELETE
 487     127,    //   128  0x80 VK_DEAD_GRAVE                     No_Equivalent
 488     127,    //   129  0x81 VK_DEAD_ACUTE                     No_Equivalent
 489     127,    //   130  0x82 VK_DEAD_CIRCUMFLEX                No_Equivalent
 490     127,    //   131  0x83 VK_DEAD_TILDE                     No_Equivalent
 491     127,    //   132  0x84 VK_DEAD_MACRON                    No_Equivalent
 492     127,    //   133  0x85 VK_DEAD_BREVE                     No_Equivalent
 493     127,    //   134  0x86 VK_DEAD_ABOVEDOT                  No_Equivalent
 494     127,    //   135  0x87 VK_DEAD_DIAERESIS                 No_Equivalent
 495     127,    //   136  0x88 VK_DEAD_ABOVERING                 No_Equivalent
 496     127,    //   137  0x89 VK_DEAD_DOUBLEACUTE               No_Equivalent
 497     127,    //   138  0x8a VK_DEAD_CARON                     No_Equivalent
 498     127,    //   139  0x8b VK_DEAD_CEDILLA                   No_Equivalent
 499     127,    //   140  0x8c VK_DEAD_OGONEK                    No_Equivalent
 500     127,    //   141  0x8d VK_DEAD_IOTA                      No_Equivalent
 501     127,    //   142  0x8e VK_DEAD_VOICED_SOUND              No_Equivalent
 502     127,    //   143  0x8f VK_DEAD_SEMIVOICED_SOUND          No_Equivalent
 503     127,    //   144  0x90 VK_NUM_LOCK                       No_Equivalent
 504     107,    //   145  0x91 VK_SCROLL_LOCK
 505     127,    //   146  0x92 Not_Used
 506     127,    //   147  0x93 Not_Used
 507     127,    //   148  0x94 Not_Used
 508     127,    //   149  0x95 Not_Used
 509     127,    //   150  0x96 VK_AMPERSAND                      No_Equivalent
 510     127,    //   151  0x97 VK_ASTERISK                       No_Equivalent
 511     127,    //   152  0x98 VK_QUOTEDBL                       No_Equivalent
 512     127,    //   153  0x99 VK_LESS                           No_Equivalent
 513     105,    //   154  0x9a VK_PRINTSCREEN
 514     127,    //   155  0x9b VK_INSERT                         No_Equivalent
 515     114,    //   156  0x9c VK_HELP
 516      55,    //   157  0x9d VK_META
 517     127,    //   158  0x9e Not_Used
 518     127,    //   159  0x9f Not_Used
 519     127,    //   160  0xa0 VK_GREATER                        No_Equivalent
 520     127,    //   161  0xa1 VK_BRACELEFT                      No_Equivalent
 521     127,    //   162  0xa2 VK_BRACERIGHT                     No_Equivalent
 522     127,    //   163  0xa3 Not_Used
 523     127,    //   164  0xa4 Not_Used
 524     127,    //   165  0xa5 Not_Used
 525     127,    //   166  0xa6 Not_Used
 526     127,    //   167  0xa7 Not_Used
 527     127,    //   168  0xa8 Not_Used
 528     127,    //   169  0xa9 Not_Used
 529     127,    //   170  0xaa Not_Used
 530     127,    //   171  0xab Not_Used
 531     127,    //   172  0xac Not_Used
 532     127,    //   173  0xad Not_Used
 533     127,    //   174  0xae Not_Used
 534     127,    //   175  0xaf Not_Used
 535     127,    //   176  0xb0 Not_Used
 536     127,    //   177  0xb1 Not_Used
 537     127,    //   178  0xb2 Not_Used
 538     127,    //   179  0xb3 Not_Used
 539     127,    //   180  0xb4 Not_Used
 540     127,    //   181  0xb5 Not_Used
 541     127,    //   182  0xb6 Not_Used
 542     127,    //   183  0xb7 Not_Used
 543     127,    //   184  0xb8 Not_Used
 544     127,    //   185  0xb9 Not_Used
 545     127,    //   186  0xba Not_Used
 546     127,    //   187  0xbb Not_Used
 547     127,    //   188  0xbc Not_Used
 548     127,    //   189  0xbd Not_Used
 549     127,    //   190  0xbe Not_Used
 550     127,    //   191  0xbf Not_Used
 551      50,    //   192  0xc0 VK_BACK_QUOTE
 552     127,    //   193  0xc1 Not_Used
 553     127,    //   194  0xc2 Not_Used
 554     127,    //   195  0xc3 Not_Used
 555     127,    //   196  0xc4 Not_Used
 556     127,    //   197  0xc5 Not_Used
 557     127,    //   198  0xc6 Not_Used
 558     127,    //   199  0xc7 Not_Used
 559     127,    //   200  0xc8 Not_Used
 560     127,    //   201  0xc9 Not_Used
 561     127,    //   202  0xca Not_Used
 562     127,    //   203  0xcb Not_Used
 563     127,    //   204  0xcc Not_Used
 564     127,    //   205  0xcd Not_Used
 565     127,    //   206  0xce Not_Used
 566     127,    //   207  0xcf Not_Used
 567     127,    //   208  0xd0 Not_Used
 568     127,    //   209  0xd1 Not_Used
 569     127,    //   210  0xd2 Not_Used
 570     127,    //   211  0xd3 Not_Used
 571     127,    //   212  0xd4 Not_Used
 572     127,    //   213  0xd5 Not_Used
 573     127,    //   214  0xd6 Not_Used
 574     127,    //   215  0xd7 Not_Used
 575     127,    //   216  0xd8 Not_Used
 576     127,    //   217  0xd9 Not_Used
 577     127,    //   218  0xda Not_Used
 578     127,    //   219  0xdb Not_Used
 579     127,    //   220  0xdc Not_Used
 580     127,    //   221  0xdd Not_Used
 581      39     //   222  0xde VK_QUOTE
 582 };
 583 
 584 // NOTE: All values above 222 don't have an equivalent on MacOSX.
 585 static inline CGKeyCode GetCGKeyCode(jint javaKeyCode)
 586 {
 587     if (javaKeyCode > 222) {
 588         return 127;
 589     } else {
 590         return javaToMacKeyCode[javaKeyCode];
 591     }
 592 }
 593 
 594 static int GetClickCount(BOOL isDown) {
 595     NSTimeInterval now = [[NSDate date] timeIntervalSinceReferenceDate];
 596     NSTimeInterval clickInterval = now - gsLastClickTime;
 597     BOOL isWithinTreshold = clickInterval < [NSEvent doubleClickInterval];
 598 
 599     if (isDown) {
 600         if (isWithinTreshold) {
 601             gsClickCount++;
 602         } else {
 603             gsClickCount = 1;
 604         }
 605 
 606         gsLastClickTime = now;
 607     } else {
 608         // In OS X, a mouse up has the click count of the last mouse down
 609         // if an interval between up and down is within the double click
 610         // threshold, and 0 otherwise.
 611         if (!isWithinTreshold) {
 612             gsClickCount = 0;
 613         }
 614     }
 615 
 616     return gsClickCount;
 617 }