1 /*
   2  * Copyright (c) 2011, 2014, 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. If the mouse position is unknown it is obtained from
 150     // CGEvents. The peer also tracks the mouse button desired state,
 151     // the appropriate key modifier state, and whether the mouse action
 152     // is simply a mouse move with no mouse button state changes.
 153 
 154     CGError err = kCGErrorSuccess;
 155 
 156     CGRect globalDeviceBounds = CGDisplayBounds(displayID);
 157 
 158     // Set unknown mouse location, if needed.
 159     if ((mouseLastX == sun_lwawt_macosx_CRobot_MOUSE_LOCATION_UNKNOWN) ||
 160         (mouseLastY == sun_lwawt_macosx_CRobot_MOUSE_LOCATION_UNKNOWN))
 161     {
 162         CGEventRef event = CGEventCreate(NULL);
 163         if (event == NULL) {
 164             return;
 165         }
 166 
 167         CGPoint globalPos = CGEventGetLocation(event);
 168         CFRelease(event);
 169 
 170         // Normalize the coords within this display device, as
 171         // per Robot rules.
 172         if (globalPos.x < CGRectGetMinX(globalDeviceBounds)) {
 173             globalPos.x = CGRectGetMinX(globalDeviceBounds);
 174         }
 175         else if (globalPos.x > CGRectGetMaxX(globalDeviceBounds)) {
 176             globalPos.x = CGRectGetMaxX(globalDeviceBounds);
 177         }
 178 
 179         if (globalPos.y < CGRectGetMinY(globalDeviceBounds)) {
 180             globalPos.y = CGRectGetMinY(globalDeviceBounds);
 181         }
 182         else if (globalPos.y > CGRectGetMaxY(globalDeviceBounds)) {
 183             globalPos.y = CGRectGetMaxY(globalDeviceBounds);
 184         }
 185 
 186         mouseLastX = (jint)globalPos.x;
 187         mouseLastY = (jint)globalPos.y;
 188     }
 189 
 190     // volatile, otherwise it warns that it might be clobbered by 'longjmp'
 191     volatile CGPoint point;
 192 
 193     point.x = mouseLastX;
 194     point.y = mouseLastY;
 195 
 196     __block CGMouseButton button = kCGMouseButtonLeft;
 197     __block CGEventType type = kCGEventMouseMoved;
 198 
 199     void (^HandleRobotButton)(CGMouseButton, CGEventType, CGEventType, CGEventType) =
 200         ^(CGMouseButton cgButton, CGEventType cgButtonUp, CGEventType cgButtonDown,
 201           CGEventType cgButtonDragged) {
 202 
 203             button = cgButton;
 204             type = cgButtonUp;
 205 
 206             if (isButtonsDownState) {
 207                 if (isMouseMove) {
 208                     type = cgButtonDragged;
 209                 } else {
 210                     type = cgButtonDown;
 211                 }
 212             }
 213         };
 214 
 215     // Left
 216     if (buttonsState & java_awt_event_InputEvent_BUTTON1_MASK ||
 217         buttonsState & java_awt_event_InputEvent_BUTTON1_DOWN_MASK ) {
 218 
 219         HandleRobotButton(kCGMouseButtonLeft, kCGEventLeftMouseUp,
 220                           kCGEventLeftMouseDown, kCGEventLeftMouseDragged);
 221     }
 222 
 223     // Other
 224     if (buttonsState & java_awt_event_InputEvent_BUTTON2_MASK ||
 225         buttonsState & java_awt_event_InputEvent_BUTTON2_DOWN_MASK ) {
 226 
 227         HandleRobotButton(kCGMouseButtonCenter, kCGEventOtherMouseUp,
 228                           kCGEventOtherMouseDown, kCGEventOtherMouseDragged);
 229     }
 230 
 231     // Right
 232     if (buttonsState & java_awt_event_InputEvent_BUTTON3_MASK ||
 233         buttonsState & java_awt_event_InputEvent_BUTTON3_DOWN_MASK ) {
 234 
 235         HandleRobotButton(kCGMouseButtonRight, kCGEventRightMouseUp,
 236                           kCGEventRightMouseDown, kCGEventRightMouseDragged);
 237     }
 238 
 239     // Extra
 240     if (gNumberOfButtons > 3) {
 241         int extraButton;
 242         for (extraButton = 3; extraButton < gNumberOfButtons; ++extraButton) {
 243             if ((buttonsState & gButtonDownMasks[extraButton])) {
 244                 HandleRobotButton(extraButton, kCGEventOtherMouseUp,
 245                             kCGEventOtherMouseDown, kCGEventOtherMouseDragged);
 246             }
 247         }
 248     }
 249 
 250     int clickCount = 0;
 251     int eventNumber = gsEventNumber;
 252 
 253     if (isMouseMove) {
 254         // any mouse movement resets click count
 255         gsLastClickTime = 0;
 256     } else {
 257         clickCount = GetClickCount(isButtonsDownState);
 258 
 259         if (isButtonsDownState) {
 260             gsButtonEventNumber[button] = gsEventNumber++;
 261         }
 262         eventNumber = gsButtonEventNumber[button];
 263     }
 264 
 265     PostMouseEvent(point, button, type, clickCount, eventNumber);
 266 
 267     JNF_COCOA_EXIT(env);
 268 }
 269 
 270 /*
 271  * Class:     sun_lwawt_macosx_CRobot
 272  * Method:    mouseWheel
 273  * Signature: (I)V
 274  */
 275 JNIEXPORT void JNICALL
 276 Java_sun_lwawt_macosx_CRobot_mouseWheel
 277 (JNIEnv *env, jobject peer, jint wheelAmt)
 278 {
 279     CGEventRef event = CGEventCreateScrollWheelEvent(NULL,
 280                                             kCGScrollEventUnitLine,
 281                                             k_JAVA_ROBOT_WHEEL_COUNT, wheelAmt);
 282 
 283     if (event != NULL) {
 284         CGEventPost(kCGSessionEventTap, event);
 285         CFRelease(event);
 286     }
 287 }
 288 
 289 /*
 290  * Class:     sun_lwawt_macosx_CRobot
 291  * Method:    keyEvent
 292  * Signature: (IZ)V
 293  */
 294 JNIEXPORT void JNICALL
 295 Java_sun_lwawt_macosx_CRobot_keyEvent
 296 (JNIEnv *env, jobject peer, jint javaKeyCode, jboolean keyPressed)
 297 {
 298     /*
 299      * Well, using CGEventCreateKeyboardEvent/CGEventPost would have been
 300      * a better solution, however, it gives me all kinds of trouble and I have
 301      * no idea how to solve them without inserting delays between simulated
 302      * events. So, I've ended up disabling it and opted for another approach
 303      * that uses Accessibility API instead.
 304      */
 305     CGKeyCode keyCode = GetCGKeyCode(javaKeyCode);
 306     AXUIElementRef elem = AXUIElementCreateSystemWide();
 307     AXUIElementPostKeyboardEvent(elem, (CGCharCode)0, keyCode, keyPressed);
 308     CFRelease(elem);
 309 
 310 
 311 #if 0
 312     CGEventRef event = CGEventCreateKeyboardEvent(NULL, keyCode, keyPressed);
 313     if (event != NULL) {
 314         CGEventPost(kCGSessionEventTap, event);
 315         CFRelease(event);
 316     }
 317 #endif
 318 }
 319 
 320 /*
 321  * Class:     sun_lwawt_macosx_CRobot
 322  * Method:    nativeGetScreenPixels
 323  * Signature: (IIIII[I)V
 324  */
 325 JNIEXPORT void JNICALL
 326 Java_sun_lwawt_macosx_CRobot_nativeGetScreenPixels
 327 (JNIEnv *env, jobject peer,
 328  jint x, jint y, jint width, jint height, jintArray pixels)
 329 {
 330     JNF_COCOA_ENTER(env);
 331 
 332     jint picX = x;
 333     jint picY = y;
 334     jint picWidth = width;
 335     jint picHeight = height;
 336 
 337     CGRect screenRect = CGRectMake(picX, picY, picWidth, picHeight);
 338     CGImageRef screenPixelsImage = CGWindowListCreateImage(screenRect,
 339                                         kCGWindowListOptionOnScreenOnly,
 340                                         kCGNullWindowID, kCGWindowImageDefault);
 341 
 342     if (screenPixelsImage == NULL) {
 343         return;
 344     }
 345 
 346     // get a pointer to the Java int array
 347     void *jPixelData = (*env)->GetPrimitiveArrayCritical(env, pixels, 0);
 348     CHECK_NULL(jPixelData);
 349 
 350     // create a graphics context around the Java int array
 351     CGColorSpaceRef picColorSpace = CGColorSpaceCreateWithName(
 352                                             kCGColorSpaceGenericRGB);
 353     CGContextRef jPicContextRef = CGBitmapContextCreate(
 354                                             jPixelData,
 355                                             picWidth, picHeight,
 356                                             8, picWidth * sizeof(jint),
 357                                             picColorSpace,
 358                                             kCGBitmapByteOrder32Host |
 359                                             kCGImageAlphaPremultipliedFirst);
 360 
 361     CGColorSpaceRelease(picColorSpace);
 362 
 363     // flip, scale, and color correct the screen image into the Java pixels
 364     CGRect bounds = { { 0, 0 }, { picWidth, picHeight } };
 365     CGContextDrawImage(jPicContextRef, bounds, screenPixelsImage);
 366     CGContextFlush(jPicContextRef);
 367 
 368     // cleanup
 369     CGContextRelease(jPicContextRef);
 370     CGImageRelease(screenPixelsImage);
 371 
 372     // release the Java int array back up to the JVM
 373     (*env)->ReleasePrimitiveArrayCritical(env, pixels, jPixelData, 0);
 374 
 375     JNF_COCOA_EXIT(env);
 376 }
 377 
 378 /****************************************************
 379  * Helper methods
 380  ****************************************************/
 381 
 382 static void PostMouseEvent(const CGPoint point, CGMouseButton button,
 383                            CGEventType type, int clickCount, int eventNumber)
 384 {
 385     CGEventRef mouseEvent = CGEventCreateMouseEvent(NULL, type, point, button);
 386     if (mouseEvent != NULL) {
 387         CGEventSetIntegerValueField(mouseEvent, kCGMouseEventClickState, clickCount);
 388         CGEventSetIntegerValueField(mouseEvent, kCGMouseEventNumber, eventNumber);
 389         CGEventPost(kCGSessionEventTap, mouseEvent);
 390         CFRelease(mouseEvent);
 391     }
 392 }
 393 
 394 // NOTE: Don't modify this table directly. It is machine generated. See below.
 395 static const unsigned char javaToMacKeyCode[] = {
 396     127,    //     0     0 VK_UNDEFINED                      No_Equivalent
 397     127,    //     1   0x1 Not_Used
 398     127,    //     2   0x2 Not_Used
 399     127,    //     3   0x3 VK_CANCEL                         No_Equivalent
 400     127,    //     4   0x4 Not_Used
 401     127,    //     5   0x5 Not_Used
 402     127,    //     6   0x6 Not_Used
 403     127,    //     7   0x7 Not_Used
 404      51,    //     8   0x8 VK_BACK_SPACE
 405      48,    //     9   0x9 VK_TAB
 406      36,    //    10   0xa VK_ENTER
 407     127,    //    11   0xb Not_Used
 408      71,    //    12   0xc VK_CLEAR
 409     127,    //    13   0xd Not_Used
 410     127,    //    14   0xe Not_Used
 411     127,    //    15   0xf Not_Used
 412      56,    //    16  0x10 VK_SHIFT
 413      59,    //    17  0x11 VK_CONTROL
 414      58,    //    18  0x12 VK_ALT
 415     113,    //    19  0x13 VK_PAUSE
 416      57,    //    20  0x14 VK_CAPS_LOCK
 417     127,    //    21  0x15 VK_KANA                           No_Equivalent
 418     127,    //    22  0x16 Not_Used
 419     127,    //    23  0x17 Not_Used
 420     127,    //    24  0x18 VK_FINAL                          No_Equivalent
 421     127,    //    25  0x19 VK_KANJI                          No_Equivalent
 422     127,    //    26  0x1a Not_Used
 423      53,    //    27  0x1b VK_ESCAPE
 424     127,    //    28  0x1c VK_CONVERT                        No_Equivalent
 425     127,    //    29  0x1d VK_NONCONVERT                     No_Equivalent
 426     127,    //    30  0x1e VK_ACCEPT                         No_Equivalent
 427     127,    //    31  0x1f VK_MODECHANGE                     No_Equivalent
 428      49,    //    32  0x20 VK_SPACE
 429     116,    //    33  0x21 VK_PAGE_UP
 430     121,    //    34  0x22 VK_PAGE_DOWN
 431     119,    //    35  0x23 VK_END
 432     115,    //    36  0x24 VK_HOME
 433     123,    //    37  0x25 VK_LEFT
 434     126,    //    38  0x26 VK_UP
 435     124,    //    39  0x27 VK_RIGHT
 436     125,    //    40  0x28 VK_DOWN
 437     127,    //    41  0x29 Not_Used
 438     127,    //    42  0x2a Not_Used
 439     127,    //    43  0x2b Not_Used
 440      43,    //    44  0x2c VK_COMMA
 441      27,    //    45  0x2d VK_MINUS
 442      47,    //    46  0x2e VK_PERIOD
 443      44,    //    47  0x2f VK_SLASH
 444      29,    //    48  0x30 VK_0
 445      18,    //    49  0x31 VK_1
 446      19,    //    50  0x32 VK_2
 447      20,    //    51  0x33 VK_3
 448      21,    //    52  0x34 VK_4
 449      23,    //    53  0x35 VK_5
 450      22,    //    54  0x36 VK_6
 451      26,    //    55  0x37 VK_7
 452      28,    //    56  0x38 VK_8
 453      25,    //    57  0x39 VK_9
 454     127,    //    58  0x3a Not_Used
 455      41,    //    59  0x3b VK_SEMICOLON
 456     127,    //    60  0x3c Not_Used
 457      24,    //    61  0x3d VK_EQUALS
 458     127,    //    62  0x3e Not_Used
 459     127,    //    63  0x3f Not_Used
 460     127,    //    64  0x40 Not_Used
 461       0,    //    65  0x41 VK_A
 462      11,    //    66  0x42 VK_B
 463       8,    //    67  0x43 VK_C
 464       2,    //    68  0x44 VK_D
 465      14,    //    69  0x45 VK_E
 466       3,    //    70  0x46 VK_F
 467       5,    //    71  0x47 VK_G
 468       4,    //    72  0x48 VK_H
 469      34,    //    73  0x49 VK_I
 470      38,    //    74  0x4a VK_J
 471      40,    //    75  0x4b VK_K
 472      37,    //    76  0x4c VK_L
 473      46,    //    77  0x4d VK_M
 474      45,    //    78  0x4e VK_N
 475      31,    //    79  0x4f VK_O
 476      35,    //    80  0x50 VK_P
 477      12,    //    81  0x51 VK_Q
 478      15,    //    82  0x52 VK_R
 479       1,    //    83  0x53 VK_S
 480      17,    //    84  0x54 VK_T
 481      32,    //    85  0x55 VK_U
 482       9,    //    86  0x56 VK_V
 483      13,    //    87  0x57 VK_W
 484       7,    //    88  0x58 VK_X
 485      16,    //    89  0x59 VK_Y
 486       6,    //    90  0x5a VK_Z
 487      33,    //    91  0x5b VK_OPEN_BRACKET
 488      42,    //    92  0x5c VK_BACK_SLASH
 489      30,    //    93  0x5d VK_CLOSE_BRACKET
 490     127,    //    94  0x5e Not_Used
 491     127,    //    95  0x5f Not_Used
 492      82,    //    96  0x60 VK_NUMPAD0
 493      83,    //    97  0x61 VK_NUMPAD1
 494      84,    //    98  0x62 VK_NUMPAD2
 495      85,    //    99  0x63 VK_NUMPAD3
 496      86,    //   100  0x64 VK_NUMPAD4
 497      87,    //   101  0x65 VK_NUMPAD5
 498      88,    //   102  0x66 VK_NUMPAD6
 499      89,    //   103  0x67 VK_NUMPAD7
 500      91,    //   104  0x68 VK_NUMPAD8
 501      92,    //   105  0x69 VK_NUMPAD9
 502      67,    //   106  0x6a VK_MULTIPLY
 503      69,    //   107  0x6b VK_ADD
 504     127,    //   108  0x6c VK_SEPARATER                      No_Equivalent
 505      78,    //   109  0x6d VK_SUBTRACT
 506      65,    //   110  0x6e VK_DECIMAL
 507      75,    //   111  0x6f VK_DIVIDE
 508     122,    //   112  0x70 VK_F1
 509     120,    //   113  0x71 VK_F2
 510      99,    //   114  0x72 VK_F3
 511     118,    //   115  0x73 VK_F4
 512      96,    //   116  0x74 VK_F5
 513      97,    //   117  0x75 VK_F6
 514      98,    //   118  0x76 VK_F7
 515     100,    //   119  0x77 VK_F8
 516     101,    //   120  0x78 VK_F9
 517     109,    //   121  0x79 VK_F10
 518     103,    //   122  0x7a VK_F11
 519     111,    //   123  0x7b VK_F12
 520     127,    //   124  0x7c Not_Used
 521     127,    //   125  0x7d Not_Used
 522     127,    //   126  0x7e Not_Used
 523     117,    //   127  0x7f VK_DELETE
 524     127,    //   128  0x80 VK_DEAD_GRAVE                     No_Equivalent
 525     127,    //   129  0x81 VK_DEAD_ACUTE                     No_Equivalent
 526     127,    //   130  0x82 VK_DEAD_CIRCUMFLEX                No_Equivalent
 527     127,    //   131  0x83 VK_DEAD_TILDE                     No_Equivalent
 528     127,    //   132  0x84 VK_DEAD_MACRON                    No_Equivalent
 529     127,    //   133  0x85 VK_DEAD_BREVE                     No_Equivalent
 530     127,    //   134  0x86 VK_DEAD_ABOVEDOT                  No_Equivalent
 531     127,    //   135  0x87 VK_DEAD_DIAERESIS                 No_Equivalent
 532     127,    //   136  0x88 VK_DEAD_ABOVERING                 No_Equivalent
 533     127,    //   137  0x89 VK_DEAD_DOUBLEACUTE               No_Equivalent
 534     127,    //   138  0x8a VK_DEAD_CARON                     No_Equivalent
 535     127,    //   139  0x8b VK_DEAD_CEDILLA                   No_Equivalent
 536     127,    //   140  0x8c VK_DEAD_OGONEK                    No_Equivalent
 537     127,    //   141  0x8d VK_DEAD_IOTA                      No_Equivalent
 538     127,    //   142  0x8e VK_DEAD_VOICED_SOUND              No_Equivalent
 539     127,    //   143  0x8f VK_DEAD_SEMIVOICED_SOUND          No_Equivalent
 540     127,    //   144  0x90 VK_NUM_LOCK                       No_Equivalent
 541     107,    //   145  0x91 VK_SCROLL_LOCK
 542     127,    //   146  0x92 Not_Used
 543     127,    //   147  0x93 Not_Used
 544     127,    //   148  0x94 Not_Used
 545     127,    //   149  0x95 Not_Used
 546     127,    //   150  0x96 VK_AMPERSAND                      No_Equivalent
 547     127,    //   151  0x97 VK_ASTERISK                       No_Equivalent
 548     127,    //   152  0x98 VK_QUOTEDBL                       No_Equivalent
 549     127,    //   153  0x99 VK_LESS                           No_Equivalent
 550     105,    //   154  0x9a VK_PRINTSCREEN
 551     127,    //   155  0x9b VK_INSERT                         No_Equivalent
 552     114,    //   156  0x9c VK_HELP
 553      55,    //   157  0x9d VK_META
 554     127,    //   158  0x9e Not_Used
 555     127,    //   159  0x9f Not_Used
 556     127,    //   160  0xa0 VK_GREATER                        No_Equivalent
 557     127,    //   161  0xa1 VK_BRACELEFT                      No_Equivalent
 558     127,    //   162  0xa2 VK_BRACERIGHT                     No_Equivalent
 559     127,    //   163  0xa3 Not_Used
 560     127,    //   164  0xa4 Not_Used
 561     127,    //   165  0xa5 Not_Used
 562     127,    //   166  0xa6 Not_Used
 563     127,    //   167  0xa7 Not_Used
 564     127,    //   168  0xa8 Not_Used
 565     127,    //   169  0xa9 Not_Used
 566     127,    //   170  0xaa Not_Used
 567     127,    //   171  0xab Not_Used
 568     127,    //   172  0xac Not_Used
 569     127,    //   173  0xad Not_Used
 570     127,    //   174  0xae Not_Used
 571     127,    //   175  0xaf Not_Used
 572     127,    //   176  0xb0 Not_Used
 573     127,    //   177  0xb1 Not_Used
 574     127,    //   178  0xb2 Not_Used
 575     127,    //   179  0xb3 Not_Used
 576     127,    //   180  0xb4 Not_Used
 577     127,    //   181  0xb5 Not_Used
 578     127,    //   182  0xb6 Not_Used
 579     127,    //   183  0xb7 Not_Used
 580     127,    //   184  0xb8 Not_Used
 581     127,    //   185  0xb9 Not_Used
 582     127,    //   186  0xba Not_Used
 583     127,    //   187  0xbb Not_Used
 584     127,    //   188  0xbc Not_Used
 585     127,    //   189  0xbd Not_Used
 586     127,    //   190  0xbe Not_Used
 587     127,    //   191  0xbf Not_Used
 588      50,    //   192  0xc0 VK_BACK_QUOTE
 589     127,    //   193  0xc1 Not_Used
 590     127,    //   194  0xc2 Not_Used
 591     127,    //   195  0xc3 Not_Used
 592     127,    //   196  0xc4 Not_Used
 593     127,    //   197  0xc5 Not_Used
 594     127,    //   198  0xc6 Not_Used
 595     127,    //   199  0xc7 Not_Used
 596     127,    //   200  0xc8 Not_Used
 597     127,    //   201  0xc9 Not_Used
 598     127,    //   202  0xca Not_Used
 599     127,    //   203  0xcb Not_Used
 600     127,    //   204  0xcc Not_Used
 601     127,    //   205  0xcd Not_Used
 602     127,    //   206  0xce Not_Used
 603     127,    //   207  0xcf Not_Used
 604     127,    //   208  0xd0 Not_Used
 605     127,    //   209  0xd1 Not_Used
 606     127,    //   210  0xd2 Not_Used
 607     127,    //   211  0xd3 Not_Used
 608     127,    //   212  0xd4 Not_Used
 609     127,    //   213  0xd5 Not_Used
 610     127,    //   214  0xd6 Not_Used
 611     127,    //   215  0xd7 Not_Used
 612     127,    //   216  0xd8 Not_Used
 613     127,    //   217  0xd9 Not_Used
 614     127,    //   218  0xda Not_Used
 615     127,    //   219  0xdb Not_Used
 616     127,    //   220  0xdc Not_Used
 617     127,    //   221  0xdd Not_Used
 618      39     //   222  0xde VK_QUOTE
 619 };
 620 
 621 // NOTE: All values above 222 don't have an equivalent on MacOSX.
 622 static inline CGKeyCode GetCGKeyCode(jint javaKeyCode)
 623 {
 624     if (javaKeyCode > 222) {
 625         return 127;
 626     } else {
 627         return javaToMacKeyCode[javaKeyCode];
 628     }
 629 }
 630 
 631 static int GetClickCount(BOOL isDown) {
 632     NSTimeInterval now = [[NSDate date] timeIntervalSinceReferenceDate];
 633     NSTimeInterval clickInterval = now - gsLastClickTime;
 634     BOOL isWithinTreshold = clickInterval < [NSEvent doubleClickInterval];
 635 
 636     if (isDown) {
 637         if (isWithinTreshold) {
 638             gsClickCount++;
 639         } else {
 640             gsClickCount = 1;
 641         }
 642 
 643         gsLastClickTime = now;
 644     } else {
 645         // In OS X, a mouse up has the click count of the last mouse down
 646         // if an interval between up and down is within the double click
 647         // threshold, and 0 otherwise.
 648         if (!isWithinTreshold) {
 649             gsClickCount = 0;
 650         }
 651     }
 652 
 653     return gsClickCount;
 654 }