OLD | NEW |
| (Empty) |
1 /* | |
2 * Copyright (C) 2004, 2006, 2007 Apple Inc. All rights reserved. | |
3 * Copyright (C) 2006-2009 Google Inc. | |
4 * | |
5 * Redistribution and use in source and binary forms, with or without | |
6 * modification, are permitted provided that the following conditions | |
7 * are met: | |
8 * 1. Redistributions of source code must retain the above copyright | |
9 * notice, this list of conditions and the following disclaimer. | |
10 * 2. Redistributions in binary form must reproduce the above copyright | |
11 * notice, this list of conditions and the following disclaimer in the | |
12 * documentation and/or other materials provided with the distribution. | |
13 * | |
14 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY | |
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR | |
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
25 */ | |
26 | |
27 #include "config.h" | |
28 #include "public/web/mac/WebInputEventFactory.h" | |
29 | |
30 #include <ApplicationServices/ApplicationServices.h> | |
31 #import <AvailabilityMacros.h> | |
32 #import <Cocoa/Cocoa.h> | |
33 | |
34 #include "platform/WindowsKeyboardCodes.h" | |
35 #include "public/web/WebInputEvent.h" | |
36 #include "wtf/ASCIICType.h" | |
37 | |
38 #if __MAC_OS_X_VERSION_MAX_ALLOWED == 1060 | |
39 | |
40 // Additional Lion APIs. | |
41 enum { | |
42 NSEventPhaseNone = 0, | |
43 NSEventPhaseBegan = 0x1 << 0, | |
44 NSEventPhaseStationary = 0x1 << 1, | |
45 NSEventPhaseChanged = 0x1 << 2, | |
46 NSEventPhaseEnded = 0x1 << 3, | |
47 NSEventPhaseCancelled = 0x1 << 4 | |
48 }; | |
49 typedef NSUInteger NSEventPhase; | |
50 | |
51 #endif // __MAC_OS_X_VERSION_MAX_ALLOWED == 1060 | |
52 | |
53 #if __MAC_OS_X_VERSION_MAX_ALLOWED < 1080 | |
54 | |
55 // Additional Mountain Lion APIs. | |
56 enum { | |
57 NSEventPhaseMayBegin = 0x1 << 5 | |
58 }; | |
59 | |
60 enum { | |
61 NSEventTypeSmartMagnify = 32 | |
62 }; | |
63 | |
64 #endif // __MAC_OS_X_VERSION_MAX_ALLOWED < 1080 | |
65 | |
66 // Redeclare methods only available on OSX 10.7+ to suppress -Wpartial-availabil
ity warnings. | |
67 | |
68 #if !defined(MAC_OS_X_VERSION_10_7) || MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_
VERSION_10_7 | |
69 | |
70 @interface NSEvent (LionSDKDeclarations) | |
71 - (NSEventPhase)phase; | |
72 - (NSEventPhase)momentumPhase; | |
73 @end | |
74 | |
75 #endif // !defined(MAC_OS_X_VERSION_10_7) || MAC_OS_X_VERSION_MIN_REQUIRED < MA
C_OS_X_VERSION_10_7 | |
76 | |
77 namespace blink { | |
78 | |
79 static int windowsKeyCodeForKeyCode(uint16_t keyCode) | |
80 { | |
81 static const int windowsKeyCode[] = { | |
82 /* 0 */ VK_A, | |
83 /* 1 */ VK_S, | |
84 /* 2 */ VK_D, | |
85 /* 3 */ VK_F, | |
86 /* 4 */ VK_H, | |
87 /* 5 */ VK_G, | |
88 /* 6 */ VK_Z, | |
89 /* 7 */ VK_X, | |
90 /* 8 */ VK_C, | |
91 /* 9 */ VK_V, | |
92 /* 0x0A */ VK_OEM_3, // "Section" - key to the left from 1 (ISO Keyboard
Only) | |
93 /* 0x0B */ VK_B, | |
94 /* 0x0C */ VK_Q, | |
95 /* 0x0D */ VK_W, | |
96 /* 0x0E */ VK_E, | |
97 /* 0x0F */ VK_R, | |
98 /* 0x10 */ VK_Y, | |
99 /* 0x11 */ VK_T, | |
100 /* 0x12 */ VK_1, | |
101 /* 0x13 */ VK_2, | |
102 /* 0x14 */ VK_3, | |
103 /* 0x15 */ VK_4, | |
104 /* 0x16 */ VK_6, | |
105 /* 0x17 */ VK_5, | |
106 /* 0x18 */ VK_OEM_PLUS, // =+ | |
107 /* 0x19 */ VK_9, | |
108 /* 0x1A */ VK_7, | |
109 /* 0x1B */ VK_OEM_MINUS, // -_ | |
110 /* 0x1C */ VK_8, | |
111 /* 0x1D */ VK_0, | |
112 /* 0x1E */ VK_OEM_6, // ]} | |
113 /* 0x1F */ VK_O, | |
114 /* 0x20 */ VK_U, | |
115 /* 0x21 */ VK_OEM_4, // {[ | |
116 /* 0x22 */ VK_I, | |
117 /* 0x23 */ VK_P, | |
118 /* 0x24 */ VK_RETURN, // Return | |
119 /* 0x25 */ VK_L, | |
120 /* 0x26 */ VK_J, | |
121 /* 0x27 */ VK_OEM_7, // '" | |
122 /* 0x28 */ VK_K, | |
123 /* 0x29 */ VK_OEM_1, // ;: | |
124 /* 0x2A */ VK_OEM_5, // \| | |
125 /* 0x2B */ VK_OEM_COMMA, // ,< | |
126 /* 0x2C */ VK_OEM_2, // /? | |
127 /* 0x2D */ VK_N, | |
128 /* 0x2E */ VK_M, | |
129 /* 0x2F */ VK_OEM_PERIOD, // .> | |
130 /* 0x30 */ VK_TAB, | |
131 /* 0x31 */ VK_SPACE, | |
132 /* 0x32 */ VK_OEM_3, // `~ | |
133 /* 0x33 */ VK_BACK, // Backspace | |
134 /* 0x34 */ 0, // n/a | |
135 /* 0x35 */ VK_ESCAPE, | |
136 /* 0x36 */ VK_APPS, // Right Command | |
137 /* 0x37 */ VK_LWIN, // Left Command | |
138 /* 0x38 */ VK_LSHIFT, // Left Shift | |
139 /* 0x39 */ VK_CAPITAL, // Caps Lock | |
140 /* 0x3A */ VK_LMENU, // Left Option | |
141 /* 0x3B */ VK_LCONTROL, // Left Ctrl | |
142 /* 0x3C */ VK_RSHIFT, // Right Shift | |
143 /* 0x3D */ VK_RMENU, // Right Option | |
144 /* 0x3E */ VK_RCONTROL, // Right Ctrl | |
145 /* 0x3F */ 0, // fn | |
146 /* 0x40 */ VK_F17, | |
147 /* 0x41 */ VK_DECIMAL, // Num Pad . | |
148 /* 0x42 */ 0, // n/a | |
149 /* 0x43 */ VK_MULTIPLY, // Num Pad * | |
150 /* 0x44 */ 0, // n/a | |
151 /* 0x45 */ VK_ADD, // Num Pad + | |
152 /* 0x46 */ 0, // n/a | |
153 /* 0x47 */ VK_CLEAR, // Num Pad Clear | |
154 /* 0x48 */ VK_VOLUME_UP, | |
155 /* 0x49 */ VK_VOLUME_DOWN, | |
156 /* 0x4A */ VK_VOLUME_MUTE, | |
157 /* 0x4B */ VK_DIVIDE, // Num Pad / | |
158 /* 0x4C */ VK_RETURN, // Num Pad Enter | |
159 /* 0x4D */ 0, // n/a | |
160 /* 0x4E */ VK_SUBTRACT, // Num Pad - | |
161 /* 0x4F */ VK_F18, | |
162 /* 0x50 */ VK_F19, | |
163 /* 0x51 */ VK_OEM_PLUS, // Num Pad =. There is no such key on common PC
keyboards, mapping to normal "+=". | |
164 /* 0x52 */ VK_NUMPAD0, | |
165 /* 0x53 */ VK_NUMPAD1, | |
166 /* 0x54 */ VK_NUMPAD2, | |
167 /* 0x55 */ VK_NUMPAD3, | |
168 /* 0x56 */ VK_NUMPAD4, | |
169 /* 0x57 */ VK_NUMPAD5, | |
170 /* 0x58 */ VK_NUMPAD6, | |
171 /* 0x59 */ VK_NUMPAD7, | |
172 /* 0x5A */ VK_F20, | |
173 /* 0x5B */ VK_NUMPAD8, | |
174 /* 0x5C */ VK_NUMPAD9, | |
175 /* 0x5D */ 0, // Yen (JIS Keyboard Only) | |
176 /* 0x5E */ 0, // Underscore (JIS Keyboard Only) | |
177 /* 0x5F */ 0, // KeypadComma (JIS Keyboard Only) | |
178 /* 0x60 */ VK_F5, | |
179 /* 0x61 */ VK_F6, | |
180 /* 0x62 */ VK_F7, | |
181 /* 0x63 */ VK_F3, | |
182 /* 0x64 */ VK_F8, | |
183 /* 0x65 */ VK_F9, | |
184 /* 0x66 */ 0, // Eisu (JIS Keyboard Only) | |
185 /* 0x67 */ VK_F11, | |
186 /* 0x68 */ 0, // Kana (JIS Keyboard Only) | |
187 /* 0x69 */ VK_F13, | |
188 /* 0x6A */ VK_F16, | |
189 /* 0x6B */ VK_F14, | |
190 /* 0x6C */ 0, // n/a | |
191 /* 0x6D */ VK_F10, | |
192 /* 0x6E */ 0, // n/a (Windows95 key?) | |
193 /* 0x6F */ VK_F12, | |
194 /* 0x70 */ 0, // n/a | |
195 /* 0x71 */ VK_F15, | |
196 /* 0x72 */ VK_INSERT, // Help | |
197 /* 0x73 */ VK_HOME, // Home | |
198 /* 0x74 */ VK_PRIOR, // Page Up | |
199 /* 0x75 */ VK_DELETE, // Forward Delete | |
200 /* 0x76 */ VK_F4, | |
201 /* 0x77 */ VK_END, // End | |
202 /* 0x78 */ VK_F2, | |
203 /* 0x79 */ VK_NEXT, // Page Down | |
204 /* 0x7A */ VK_F1, | |
205 /* 0x7B */ VK_LEFT, // Left Arrow | |
206 /* 0x7C */ VK_RIGHT, // Right Arrow | |
207 /* 0x7D */ VK_DOWN, // Down Arrow | |
208 /* 0x7E */ VK_UP, // Up Arrow | |
209 /* 0x7F */ 0 // n/a | |
210 }; | |
211 | |
212 if (keyCode >= 0x80) | |
213 return 0; | |
214 | |
215 return windowsKeyCode[keyCode]; | |
216 } | |
217 | |
218 static int windowsKeyCodeForCharCode(unichar charCode) | |
219 { | |
220 switch (charCode) { | |
221 | |
222 case 'a': case 'A': return VK_A; | |
223 case 'b': case 'B': return VK_B; | |
224 case 'c': case 'C': return VK_C; | |
225 case 'd': case 'D': return VK_D; | |
226 case 'e': case 'E': return VK_E; | |
227 case 'f': case 'F': return VK_F; | |
228 case 'g': case 'G': return VK_G; | |
229 case 'h': case 'H': return VK_H; | |
230 case 'i': case 'I': return VK_I; | |
231 case 'j': case 'J': return VK_J; | |
232 case 'k': case 'K': return VK_K; | |
233 case 'l': case 'L': return VK_L; | |
234 case 'm': case 'M': return VK_M; | |
235 case 'n': case 'N': return VK_N; | |
236 case 'o': case 'O': return VK_O; | |
237 case 'p': case 'P': return VK_P; | |
238 case 'q': case 'Q': return VK_Q; | |
239 case 'r': case 'R': return VK_R; | |
240 case 's': case 'S': return VK_S; | |
241 case 't': case 'T': return VK_T; | |
242 case 'u': case 'U': return VK_U; | |
243 case 'v': case 'V': return VK_V; | |
244 case 'w': case 'W': return VK_W; | |
245 case 'x': case 'X': return VK_X; | |
246 case 'y': case 'Y': return VK_Y; | |
247 case 'z': case 'Z': return VK_Z; | |
248 | |
249 // AppKit generates Unicode PUA character codes for some function keys;
using these when key code is not known. | |
250 case NSPauseFunctionKey: return VK_PAUSE; | |
251 case NSSelectFunctionKey: return VK_SELECT; | |
252 case NSPrintFunctionKey: return VK_PRINT; | |
253 case NSExecuteFunctionKey: return VK_EXECUTE; | |
254 case NSPrintScreenFunctionKey: return VK_SNAPSHOT; | |
255 case NSInsertFunctionKey: return VK_INSERT; | |
256 | |
257 case NSF21FunctionKey: return VK_F21; | |
258 case NSF22FunctionKey: return VK_F22; | |
259 case NSF23FunctionKey: return VK_F23; | |
260 case NSF24FunctionKey: return VK_F24; | |
261 case NSScrollLockFunctionKey: return VK_SCROLL; | |
262 | |
263 // This is for U.S. keyboard mapping, and doesn't necessarily make sense
for different keyboard layouts. | |
264 // For example, '"' on Windows Russian layout is VK_2, not VK_OEM_7. | |
265 case ';': case ':': return VK_OEM_1; | |
266 case '=': case '+': return VK_OEM_PLUS; | |
267 case ',': case '<': return VK_OEM_COMMA; | |
268 case '-': case '_': return VK_OEM_MINUS; | |
269 case '.': case '>': return VK_OEM_PERIOD; | |
270 case '/': case '?': return VK_OEM_2; | |
271 case '`': case '~': return VK_OEM_3; | |
272 case '[': case '{': return VK_OEM_4; | |
273 case '\\': case '|': return VK_OEM_5; | |
274 case ']': case '}': return VK_OEM_6; | |
275 case '\'': case '"': return VK_OEM_7; | |
276 | |
277 } | |
278 | |
279 return 0; | |
280 } | |
281 | |
282 // Return true if the target modifier key is up. OS X has an "official" flag | |
283 // to test whether either left or right versions of a modifier key are held, | |
284 // and "unofficial" flags for the left and right versions independently. This | |
285 // function verifies that |targetKeyMask| and |otherKeyMask| (which should be | |
286 // the left and right versions of a modifier) are consistent with with the | |
287 // state of |eitherKeyMask| (which should be the corresponding ""official" | |
288 // flag). If they are consistent, it tests |targetKeyMask|; otherwise it tests | |
289 // |eitherKeyMask|. | |
290 static inline bool isModifierKeyUp( | |
291 unsigned int flags, unsigned int targetKeyMask, unsigned int otherKeyMask, | |
292 unsigned int eitherKeyMask) | |
293 { | |
294 bool eitherKeyDown = (flags & eitherKeyMask) != 0; | |
295 bool targetKeyDown = (flags & targetKeyMask) != 0; | |
296 bool otherKeyDown = (flags & otherKeyMask) != 0; | |
297 if (eitherKeyDown != (targetKeyDown || otherKeyDown)) | |
298 return !eitherKeyDown; | |
299 return !targetKeyDown; | |
300 } | |
301 | |
302 static inline bool isKeyUpEvent(NSEvent* event) | |
303 { | |
304 if ([event type] != NSFlagsChanged) | |
305 return [event type] == NSKeyUp; | |
306 | |
307 // Unofficial bit-masks for left- and right-hand versions of modifier keys. | |
308 // These values were determined empirically. | |
309 const unsigned int kLeftControlKeyMask = 1 << 0; | |
310 const unsigned int kLeftShiftKeyMask = 1 << 1; | |
311 const unsigned int kRightShiftKeyMask = 1 << 2; | |
312 const unsigned int kLeftCommandKeyMask = 1 << 3; | |
313 const unsigned int kRightCommandKeyMask = 1 << 4; | |
314 const unsigned int kLeftAlternateKeyMask = 1 << 5; | |
315 const unsigned int kRightAlternateKeyMask = 1 << 6; | |
316 const unsigned int kRightControlKeyMask = 1 << 13; | |
317 | |
318 switch ([event keyCode]) { | |
319 case 54: // Right Command | |
320 return isModifierKeyUp([event modifierFlags], kRightCommandKeyMask, | |
321 kLeftCommandKeyMask, NSCommandKeyMask); | |
322 case 55: // Left Command | |
323 return isModifierKeyUp([event modifierFlags], kLeftCommandKeyMask, | |
324 kRightCommandKeyMask, NSCommandKeyMask); | |
325 | |
326 case 57: // Capslock | |
327 return ([event modifierFlags] & NSAlphaShiftKeyMask) == 0; | |
328 | |
329 case 56: // Left Shift | |
330 return isModifierKeyUp([event modifierFlags], kLeftShiftKeyMask, | |
331 kRightShiftKeyMask, NSShiftKeyMask); | |
332 case 60: // Right Shift | |
333 return isModifierKeyUp([event modifierFlags],kRightShiftKeyMask, | |
334 kLeftShiftKeyMask, NSShiftKeyMask); | |
335 | |
336 case 58: // Left Alt | |
337 return isModifierKeyUp([event modifierFlags], kLeftAlternateKeyMask, | |
338 kRightAlternateKeyMask, NSAlternateKeyMask); | |
339 case 61: // Right Alt | |
340 return isModifierKeyUp([event modifierFlags], kRightAlternateKeyMask, | |
341 kLeftAlternateKeyMask, NSAlternateKeyMask); | |
342 | |
343 case 59: // Left Ctrl | |
344 return isModifierKeyUp([event modifierFlags], kLeftControlKeyMask, | |
345 kRightControlKeyMask, NSControlKeyMask); | |
346 case 62: // Right Ctrl | |
347 return isModifierKeyUp([event modifierFlags], kRightControlKeyMask, | |
348 kLeftControlKeyMask, NSControlKeyMask); | |
349 | |
350 case 63: // Function | |
351 return ([event modifierFlags] & NSFunctionKeyMask) == 0; | |
352 } | |
353 return false; | |
354 } | |
355 | |
356 static bool isKeypadEvent(NSEvent* event) | |
357 { | |
358 // Check that this is the type of event that has a keyCode. | |
359 switch ([event type]) { | |
360 case NSKeyDown: | |
361 case NSKeyUp: | |
362 case NSFlagsChanged: | |
363 break; | |
364 default: | |
365 return false; | |
366 } | |
367 | |
368 switch ([event keyCode]) { | |
369 case 71: // Clear | |
370 case 81: // = | |
371 case 75: // / | |
372 case 67: // * | |
373 case 78: // - | |
374 case 69: // + | |
375 case 76: // Enter | |
376 case 65: // . | |
377 case 82: // 0 | |
378 case 83: // 1 | |
379 case 84: // 2 | |
380 case 85: // 3 | |
381 case 86: // 4 | |
382 case 87: // 5 | |
383 case 88: // 6 | |
384 case 89: // 7 | |
385 case 91: // 8 | |
386 case 92: // 9 | |
387 return true; | |
388 } | |
389 | |
390 return false; | |
391 } | |
392 | |
393 static int windowsKeyCodeForKeyEvent(NSEvent* event) | |
394 { | |
395 int code = 0; | |
396 // There are several kinds of characters for which we produce key code from
char code: | |
397 // 1. Roman letters. Windows keyboard layouts affect both virtual key codes
and character codes for these, | |
398 // so e.g. 'A' gets the same keyCode on QWERTY, AZERTY or Dvorak layouts. | |
399 // 2. Keys for which there is no known Mac virtual key codes, like PrintScre
en. | |
400 // 3. Certain punctuation keys. On Windows, these are also remapped dependin
g on current keyboard layout, | |
401 // but see comment in windowsKeyCodeForCharCode(). | |
402 if (!isKeypadEvent(event) && ([event type] == NSKeyDown || [event type] == N
SKeyUp)) { | |
403 // Cmd switches Roman letters for Dvorak-QWERTY layout, so try modified
characters first. | |
404 NSString* s = [event characters]; | |
405 code = [s length] > 0 ? windowsKeyCodeForCharCode([s characterAtIndex:0]
) : 0; | |
406 if (code) | |
407 return code; | |
408 | |
409 // Ctrl+A on an AZERTY keyboard would get VK_Q keyCode if we relied on -
[NSEvent keyCode] below. | |
410 s = [event charactersIgnoringModifiers]; | |
411 code = [s length] > 0 ? windowsKeyCodeForCharCode([s characterAtIndex:0]
) : 0; | |
412 if (code) | |
413 return code; | |
414 } | |
415 | |
416 // Map Mac virtual key code directly to Windows one for any keys not handled
above. | |
417 // E.g. the key next to Caps Lock has the same Event.keyCode on U.S. keyboar
d ('A') and on Russian keyboard (CYRILLIC LETTER EF). | |
418 return windowsKeyCodeForKeyCode([event keyCode]); | |
419 } | |
420 | |
421 static inline NSString* textFromEvent(NSEvent* event) | |
422 { | |
423 if ([event type] == NSFlagsChanged) | |
424 return @""; | |
425 return [event characters]; | |
426 } | |
427 | |
428 static inline NSString* unmodifiedTextFromEvent(NSEvent* event) | |
429 { | |
430 if ([event type] == NSFlagsChanged) | |
431 return @""; | |
432 return [event charactersIgnoringModifiers]; | |
433 } | |
434 | |
435 static NSString* keyIdentifierForKeyEvent(NSEvent* event) | |
436 { | |
437 if ([event type] == NSFlagsChanged) { | |
438 switch ([event keyCode]) { | |
439 case 54: // Right Command | |
440 case 55: // Left Command | |
441 return @"Meta"; | |
442 | |
443 case 57: // Capslock | |
444 return @"CapsLock"; | |
445 | |
446 case 56: // Left Shift | |
447 case 60: // Right Shift | |
448 return @"Shift"; | |
449 | |
450 case 58: // Left Alt | |
451 case 61: // Right Alt | |
452 return @"Alt"; | |
453 | |
454 case 59: // Left Ctrl | |
455 case 62: // Right Ctrl | |
456 return @"Control"; | |
457 | |
458 // Begin non-Apple addition/modification -------------------------------------- | |
459 case 63: // Function | |
460 return @"Function"; | |
461 | |
462 default: // Unknown, but this may be a strange/new keyboard. | |
463 return @"Unidentified"; | |
464 // End non-Apple addition/modification ---------------------------------------- | |
465 } | |
466 } | |
467 | |
468 NSString* s = [event charactersIgnoringModifiers]; | |
469 if ([s length] != 1) | |
470 return @"Unidentified"; | |
471 | |
472 unichar c = [s characterAtIndex:0]; | |
473 switch (c) { | |
474 // Each identifier listed in the DOM spec is listed here. | |
475 // Many are simply commented out since they do not appear on standard Macint
osh keyboards | |
476 // or are on a key that doesn't have a corresponding character. | |
477 | |
478 // "Accept" | |
479 // "AllCandidates" | |
480 | |
481 // "Alt" | |
482 case NSMenuFunctionKey: | |
483 return @"Alt"; | |
484 | |
485 // "Apps" | |
486 // "BrowserBack" | |
487 // "BrowserForward" | |
488 // "BrowserHome" | |
489 // "BrowserRefresh" | |
490 // "BrowserSearch" | |
491 // "BrowserStop" | |
492 // "CapsLock" | |
493 | |
494 // "Clear" | |
495 case NSClearLineFunctionKey: | |
496 return @"Clear"; | |
497 | |
498 // "CodeInput" | |
499 // "Compose" | |
500 // "Control" | |
501 // "Crsel" | |
502 // "Convert" | |
503 // "Copy" | |
504 // "Cut" | |
505 | |
506 // "Down" | |
507 case NSDownArrowFunctionKey: | |
508 return @"Down"; | |
509 // "End" | |
510 case NSEndFunctionKey: | |
511 return @"End"; | |
512 // "Enter" | |
513 case 0x3: case 0xA: case 0xD: // Macintosh calls the one on the main keyboar
d Return, but Windows calls it Enter, so we'll do the same for the DOM | |
514 return @"Enter"; | |
515 | |
516 // "EraseEof" | |
517 | |
518 // "Execute" | |
519 case NSExecuteFunctionKey: | |
520 return @"Execute"; | |
521 | |
522 // "Exsel" | |
523 | |
524 // "F1" | |
525 case NSF1FunctionKey: | |
526 return @"F1"; | |
527 // "F2" | |
528 case NSF2FunctionKey: | |
529 return @"F2"; | |
530 // "F3" | |
531 case NSF3FunctionKey: | |
532 return @"F3"; | |
533 // "F4" | |
534 case NSF4FunctionKey: | |
535 return @"F4"; | |
536 // "F5" | |
537 case NSF5FunctionKey: | |
538 return @"F5"; | |
539 // "F6" | |
540 case NSF6FunctionKey: | |
541 return @"F6"; | |
542 // "F7" | |
543 case NSF7FunctionKey: | |
544 return @"F7"; | |
545 // "F8" | |
546 case NSF8FunctionKey: | |
547 return @"F8"; | |
548 // "F9" | |
549 case NSF9FunctionKey: | |
550 return @"F9"; | |
551 // "F10" | |
552 case NSF10FunctionKey: | |
553 return @"F10"; | |
554 // "F11" | |
555 case NSF11FunctionKey: | |
556 return @"F11"; | |
557 // "F12" | |
558 case NSF12FunctionKey: | |
559 return @"F12"; | |
560 // "F13" | |
561 case NSF13FunctionKey: | |
562 return @"F13"; | |
563 // "F14" | |
564 case NSF14FunctionKey: | |
565 return @"F14"; | |
566 // "F15" | |
567 case NSF15FunctionKey: | |
568 return @"F15"; | |
569 // "F16" | |
570 case NSF16FunctionKey: | |
571 return @"F16"; | |
572 // "F17" | |
573 case NSF17FunctionKey: | |
574 return @"F17"; | |
575 // "F18" | |
576 case NSF18FunctionKey: | |
577 return @"F18"; | |
578 // "F19" | |
579 case NSF19FunctionKey: | |
580 return @"F19"; | |
581 // "F20" | |
582 case NSF20FunctionKey: | |
583 return @"F20"; | |
584 // "F21" | |
585 case NSF21FunctionKey: | |
586 return @"F21"; | |
587 // "F22" | |
588 case NSF22FunctionKey: | |
589 return @"F22"; | |
590 // "F23" | |
591 case NSF23FunctionKey: | |
592 return @"F23"; | |
593 // "F24" | |
594 case NSF24FunctionKey: | |
595 return @"F24"; | |
596 | |
597 // "FinalMode" | |
598 | |
599 // "Find" | |
600 case NSFindFunctionKey: | |
601 return @"Find"; | |
602 | |
603 // "FullWidth" | |
604 // "HalfWidth" | |
605 // "HangulMode" | |
606 // "HanjaMode" | |
607 | |
608 // "Help" | |
609 case NSHelpFunctionKey: | |
610 return @"Help"; | |
611 | |
612 // "Hiragana" | |
613 | |
614 // "Home" | |
615 case NSHomeFunctionKey: | |
616 return @"Home"; | |
617 // "Insert" | |
618 case NSInsertFunctionKey: | |
619 return @"Insert"; | |
620 | |
621 // "JapaneseHiragana" | |
622 // "JapaneseKatakana" | |
623 // "JapaneseRomaji" | |
624 // "JunjaMode" | |
625 // "KanaMode" | |
626 // "KanjiMode" | |
627 // "Katakana" | |
628 // "LaunchApplication1" | |
629 // "LaunchApplication2" | |
630 // "LaunchMail" | |
631 | |
632 // "Left" | |
633 case NSLeftArrowFunctionKey: | |
634 return @"Left"; | |
635 | |
636 // "Meta" | |
637 // "MediaNextTrack" | |
638 // "MediaPlayPause" | |
639 // "MediaPreviousTrack" | |
640 // "MediaStop" | |
641 | |
642 // "ModeChange" | |
643 case NSModeSwitchFunctionKey: | |
644 return @"ModeChange"; | |
645 | |
646 // "Nonconvert" | |
647 // "NumLock" | |
648 | |
649 // "PageDown" | |
650 case NSPageDownFunctionKey: | |
651 return @"PageDown"; | |
652 // "PageUp" | |
653 case NSPageUpFunctionKey: | |
654 return @"PageUp"; | |
655 | |
656 // "Paste" | |
657 | |
658 // "Pause" | |
659 case NSPauseFunctionKey: | |
660 return @"Pause"; | |
661 | |
662 // "Play" | |
663 // "PreviousCandidate" | |
664 | |
665 // "PrintScreen" | |
666 case NSPrintScreenFunctionKey: | |
667 return @"PrintScreen"; | |
668 | |
669 // "Process" | |
670 // "Props" | |
671 | |
672 // "Right" | |
673 case NSRightArrowFunctionKey: | |
674 return @"Right"; | |
675 | |
676 // "RomanCharacters" | |
677 | |
678 // "Scroll" | |
679 case NSScrollLockFunctionKey: | |
680 return @"Scroll"; | |
681 // "Select" | |
682 case NSSelectFunctionKey: | |
683 return @"Select"; | |
684 | |
685 // "SelectMedia" | |
686 // "Shift" | |
687 | |
688 // "Stop" | |
689 case NSStopFunctionKey: | |
690 return @"Stop"; | |
691 // "Up" | |
692 case NSUpArrowFunctionKey: | |
693 return @"Up"; | |
694 // "Undo" | |
695 case NSUndoFunctionKey: | |
696 return @"Undo"; | |
697 | |
698 // "VolumeDown" | |
699 // "VolumeMute" | |
700 // "VolumeUp" | |
701 // "Win" | |
702 // "Zoom" | |
703 | |
704 // More function keys, not in the key identifier specification. | |
705 case NSF25FunctionKey: | |
706 return @"F25"; | |
707 case NSF26FunctionKey: | |
708 return @"F26"; | |
709 case NSF27FunctionKey: | |
710 return @"F27"; | |
711 case NSF28FunctionKey: | |
712 return @"F28"; | |
713 case NSF29FunctionKey: | |
714 return @"F29"; | |
715 case NSF30FunctionKey: | |
716 return @"F30"; | |
717 case NSF31FunctionKey: | |
718 return @"F31"; | |
719 case NSF32FunctionKey: | |
720 return @"F32"; | |
721 case NSF33FunctionKey: | |
722 return @"F33"; | |
723 case NSF34FunctionKey: | |
724 return @"F34"; | |
725 case NSF35FunctionKey: | |
726 return @"F35"; | |
727 | |
728 // Turn 0x7F into 0x08, because backspace needs to always be 0x08. | |
729 case 0x7F: | |
730 return @"U+0008"; | |
731 // Standard says that DEL becomes U+007F. | |
732 case NSDeleteFunctionKey: | |
733 return @"U+007F"; | |
734 | |
735 // Always use 0x09 for tab instead of AppKit's backtab character. | |
736 case NSBackTabCharacter: | |
737 return @"U+0009"; | |
738 | |
739 case NSBeginFunctionKey: | |
740 case NSBreakFunctionKey: | |
741 case NSClearDisplayFunctionKey: | |
742 case NSDeleteCharFunctionKey: | |
743 case NSDeleteLineFunctionKey: | |
744 case NSInsertCharFunctionKey: | |
745 case NSInsertLineFunctionKey: | |
746 case NSNextFunctionKey: | |
747 case NSPrevFunctionKey: | |
748 case NSPrintFunctionKey: | |
749 case NSRedoFunctionKey: | |
750 case NSResetFunctionKey: | |
751 case NSSysReqFunctionKey: | |
752 case NSSystemFunctionKey: | |
753 case NSUserFunctionKey: | |
754 // FIXME: We should use something other than the vendor-area Unicode val
ues for the above keys. | |
755 // For now, just fall through to the default. | |
756 default: | |
757 return [NSString stringWithFormat:@"U+%04X", WTF::toASCIIUpper(c)]; | |
758 } | |
759 } | |
760 | |
761 // End Apple code. | |
762 // ---------------------------------------------------------------------------- | |
763 | |
764 static inline int modifiersFromEvent(NSEvent* event) { | |
765 int modifiers = 0; | |
766 | |
767 if ([event modifierFlags] & NSControlKeyMask) | |
768 modifiers |= WebInputEvent::ControlKey; | |
769 if ([event modifierFlags] & NSShiftKeyMask) | |
770 modifiers |= WebInputEvent::ShiftKey; | |
771 if ([event modifierFlags] & NSAlternateKeyMask) | |
772 modifiers |= WebInputEvent::AltKey; | |
773 if ([event modifierFlags] & NSCommandKeyMask) | |
774 modifiers |= WebInputEvent::MetaKey; | |
775 if ([event modifierFlags] & NSAlphaShiftKeyMask) | |
776 modifiers |= WebInputEvent::CapsLockOn; | |
777 | |
778 // The return value of 1 << 0 corresponds to the left mouse button, | |
779 // 1 << 1 corresponds to the right mouse button, | |
780 // 1 << n, n >= 2 correspond to other mouse buttons. | |
781 NSUInteger pressedButtons = [NSEvent pressedMouseButtons]; | |
782 | |
783 if (pressedButtons & (1 << 0)) | |
784 modifiers |= WebInputEvent::LeftButtonDown; | |
785 if (pressedButtons & (1 << 1)) | |
786 modifiers |= WebInputEvent::RightButtonDown; | |
787 if (pressedButtons & (1 << 2)) | |
788 modifiers |= WebInputEvent::MiddleButtonDown; | |
789 | |
790 return modifiers; | |
791 } | |
792 | |
793 static inline void setWebEventLocationFromEventInView(WebMouseEvent* result, | |
794 NSEvent* event, | |
795 NSView* view) { | |
796 NSPoint windowLocal = [event locationInWindow]; | |
797 | |
798 NSPoint screenLocal = [[view window] convertBaseToScreen:windowLocal]; | |
799 result->globalX = screenLocal.x; | |
800 // Flip y. | |
801 NSScreen* primaryScreen = ([[NSScreen screens] count] > 0) ? | |
802 [[NSScreen screens] objectAtIndex:0] : nil; | |
803 if (primaryScreen) | |
804 result->globalY = [primaryScreen frame].size.height - screenLocal.y; | |
805 else | |
806 result->globalY = screenLocal.y; | |
807 | |
808 NSPoint contentLocal = [view convertPoint:windowLocal fromView:nil]; | |
809 result->x = contentLocal.x; | |
810 result->y = [view frame].size.height - contentLocal.y; // Flip y. | |
811 | |
812 result->windowX = result->x; | |
813 result->windowY = result->y; | |
814 | |
815 result->movementX = [event deltaX]; | |
816 result->movementY = [event deltaY]; | |
817 } | |
818 | |
819 bool WebInputEventFactory::isSystemKeyEvent(const WebKeyboardEvent& event) | |
820 { | |
821 // Windows and Linux set |isSystemKey| if alt is down. Blink looks at this | |
822 // flag to decide if it should handle a key or not. E.g. alt-left/right | |
823 // shouldn't be used by Blink to scroll the current page, because we want | |
824 // to get that key back for it to do history navigation. Hence, the | |
825 // corresponding situation on OS X is to set this for cmd key presses. | |
826 // cmd-b and and cmd-i are system wide key bindings that OS X doesn't | |
827 // handle for us, so the editor handles them. | |
828 return event.modifiers & WebInputEvent::MetaKey | |
829 && event.windowsKeyCode != VK_B | |
830 && event.windowsKeyCode != VK_I; | |
831 } | |
832 | |
833 WebKeyboardEvent WebInputEventFactory::keyboardEvent(NSEvent* event) | |
834 { | |
835 WebKeyboardEvent result; | |
836 | |
837 result.type = | |
838 isKeyUpEvent(event) ? WebInputEvent::KeyUp : WebInputEvent::RawKeyDown; | |
839 | |
840 result.modifiers = modifiersFromEvent(event); | |
841 | |
842 if (isKeypadEvent(event)) | |
843 result.modifiers |= WebInputEvent::IsKeyPad; | |
844 | |
845 if (([event type] != NSFlagsChanged) && [event isARepeat]) | |
846 result.modifiers |= WebInputEvent::IsAutoRepeat; | |
847 | |
848 int windowsKeyCode = windowsKeyCodeForKeyEvent(event); | |
849 result.windowsKeyCode = WebKeyboardEvent::windowsKeyCodeWithoutLocation(wind
owsKeyCode); | |
850 result.modifiers |= WebKeyboardEvent::locationModifiersFromWindowsKeyCode(wi
ndowsKeyCode); | |
851 result.nativeKeyCode = [event keyCode]; | |
852 NSString* textStr = textFromEvent(event); | |
853 NSString* unmodifiedStr = unmodifiedTextFromEvent(event); | |
854 NSString* identifierStr = keyIdentifierForKeyEvent(event); | |
855 | |
856 // Begin Apple code, copied from KeyEventMac.mm | |
857 | |
858 // Always use 13 for Enter/Return -- we don't want to use AppKit's | |
859 // different character for Enter. | |
860 if (result.windowsKeyCode == '\r') { | |
861 textStr = @"\r"; | |
862 unmodifiedStr = @"\r"; | |
863 } | |
864 | |
865 // The adjustments below are only needed in backward compatibility mode, | |
866 // but we cannot tell what mode we are in from here. | |
867 | |
868 // Turn 0x7F into 8, because backspace needs to always be 8. | |
869 if ([textStr isEqualToString:@"\x7F"]) | |
870 textStr = @"\x8"; | |
871 if ([unmodifiedStr isEqualToString:@"\x7F"]) | |
872 unmodifiedStr = @"\x8"; | |
873 // Always use 9 for tab -- we don't want to use AppKit's different character | |
874 // for shift-tab. | |
875 if (result.windowsKeyCode == 9) { | |
876 textStr = @"\x9"; | |
877 unmodifiedStr = @"\x9"; | |
878 } | |
879 | |
880 // End Apple code. | |
881 | |
882 if ([textStr length] < WebKeyboardEvent::textLengthCap && | |
883 [unmodifiedStr length] < WebKeyboardEvent::textLengthCap) { | |
884 [textStr getCharacters:&result.text[0]]; | |
885 [unmodifiedStr getCharacters:&result.unmodifiedText[0]]; | |
886 } else | |
887 ASSERT_NOT_REACHED(); | |
888 | |
889 [identifierStr getCString:&result.keyIdentifier[0] | |
890 maxLength:sizeof(result.keyIdentifier) | |
891 encoding:NSASCIIStringEncoding]; | |
892 | |
893 result.timeStampSeconds = [event timestamp]; | |
894 result.isSystemKey = isSystemKeyEvent(result); | |
895 | |
896 return result; | |
897 } | |
898 | |
899 // WebMouseEvent -------------------------------------------------------------- | |
900 | |
901 WebMouseEvent WebInputEventFactory::mouseEvent(NSEvent* event, NSView* view) | |
902 { | |
903 WebMouseEvent result; | |
904 | |
905 result.clickCount = 0; | |
906 | |
907 switch ([event type]) { | |
908 case NSMouseExited: | |
909 result.type = WebInputEvent::MouseLeave; | |
910 result.button = WebMouseEvent::ButtonNone; | |
911 break; | |
912 case NSLeftMouseDown: | |
913 result.type = WebInputEvent::MouseDown; | |
914 result.clickCount = [event clickCount]; | |
915 result.button = WebMouseEvent::ButtonLeft; | |
916 break; | |
917 case NSOtherMouseDown: | |
918 result.type = WebInputEvent::MouseDown; | |
919 result.clickCount = [event clickCount]; | |
920 result.button = WebMouseEvent::ButtonMiddle; | |
921 break; | |
922 case NSRightMouseDown: | |
923 result.type = WebInputEvent::MouseDown; | |
924 result.clickCount = [event clickCount]; | |
925 result.button = WebMouseEvent::ButtonRight; | |
926 break; | |
927 case NSLeftMouseUp: | |
928 result.type = WebInputEvent::MouseUp; | |
929 result.clickCount = [event clickCount]; | |
930 result.button = WebMouseEvent::ButtonLeft; | |
931 break; | |
932 case NSOtherMouseUp: | |
933 result.type = WebInputEvent::MouseUp; | |
934 result.clickCount = [event clickCount]; | |
935 result.button = WebMouseEvent::ButtonMiddle; | |
936 break; | |
937 case NSRightMouseUp: | |
938 result.type = WebInputEvent::MouseUp; | |
939 result.clickCount = [event clickCount]; | |
940 result.button = WebMouseEvent::ButtonRight; | |
941 break; | |
942 case NSMouseMoved: | |
943 case NSMouseEntered: | |
944 result.type = WebInputEvent::MouseMove; | |
945 break; | |
946 case NSLeftMouseDragged: | |
947 result.type = WebInputEvent::MouseMove; | |
948 result.button = WebMouseEvent::ButtonLeft; | |
949 break; | |
950 case NSOtherMouseDragged: | |
951 result.type = WebInputEvent::MouseMove; | |
952 result.button = WebMouseEvent::ButtonMiddle; | |
953 break; | |
954 case NSRightMouseDragged: | |
955 result.type = WebInputEvent::MouseMove; | |
956 result.button = WebMouseEvent::ButtonRight; | |
957 break; | |
958 default: | |
959 ASSERT_NOT_REACHED(); | |
960 } | |
961 | |
962 setWebEventLocationFromEventInView(&result, event, view); | |
963 | |
964 result.modifiers = modifiersFromEvent(event); | |
965 | |
966 result.timeStampSeconds = [event timestamp]; | |
967 | |
968 return result; | |
969 } | |
970 | |
971 // WebMouseWheelEvent --------------------------------------------------------- | |
972 | |
973 static WebMouseWheelEvent::Phase phaseForNSEventPhase(NSEventPhase eventPhase) | |
974 { | |
975 uint32_t phase = WebMouseWheelEvent::PhaseNone; | |
976 if (eventPhase & NSEventPhaseBegan) | |
977 phase |= WebMouseWheelEvent::PhaseBegan; | |
978 if (eventPhase & NSEventPhaseStationary) | |
979 phase |= WebMouseWheelEvent::PhaseStationary; | |
980 if (eventPhase & NSEventPhaseChanged) | |
981 phase |= WebMouseWheelEvent::PhaseChanged; | |
982 if (eventPhase & NSEventPhaseEnded) | |
983 phase |= WebMouseWheelEvent::PhaseEnded; | |
984 if (eventPhase & NSEventPhaseCancelled) | |
985 phase |= WebMouseWheelEvent::PhaseCancelled; | |
986 if (eventPhase & NSEventPhaseMayBegin) | |
987 phase |= WebMouseWheelEvent::PhaseMayBegin; | |
988 return static_cast<WebMouseWheelEvent::Phase>(phase); | |
989 } | |
990 | |
991 static WebMouseWheelEvent::Phase phaseForEvent(NSEvent *event) | |
992 { | |
993 if (![event respondsToSelector:@selector(phase)]) | |
994 return WebMouseWheelEvent::PhaseNone; | |
995 | |
996 NSEventPhase eventPhase = [event phase]; | |
997 return phaseForNSEventPhase(eventPhase); | |
998 } | |
999 | |
1000 static WebMouseWheelEvent::Phase momentumPhaseForEvent(NSEvent *event) | |
1001 { | |
1002 if (![event respondsToSelector:@selector(momentumPhase)]) | |
1003 return WebMouseWheelEvent::PhaseNone; | |
1004 | |
1005 NSEventPhase eventMomentumPhase = [event momentumPhase]; | |
1006 return phaseForNSEventPhase(eventMomentumPhase); | |
1007 } | |
1008 | |
1009 WebMouseWheelEvent WebInputEventFactory::mouseWheelEvent(NSEvent* event, NSView*
view, bool canRubberbandLeft, bool canRubberbandRight) | |
1010 { | |
1011 WebMouseWheelEvent result; | |
1012 | |
1013 result.type = WebInputEvent::MouseWheel; | |
1014 result.button = WebMouseEvent::ButtonNone; | |
1015 | |
1016 result.modifiers = modifiersFromEvent(event); | |
1017 | |
1018 setWebEventLocationFromEventInView(&result, event, view); | |
1019 | |
1020 result.canRubberbandLeft = canRubberbandLeft; | |
1021 result.canRubberbandRight = canRubberbandRight; | |
1022 | |
1023 // Of Mice and Men | |
1024 // --------------- | |
1025 // | |
1026 // There are three types of scroll data available on a scroll wheel CGEvent. | |
1027 // Apple's documentation ([1]) is rather vague in their differences, and not | |
1028 // terribly helpful in deciding which to use. This is what's really going on
. | |
1029 // | |
1030 // First, these events behave very differently depending on whether a standa
rd | |
1031 // wheel mouse is used (one that scrolls in discrete units) or a | |
1032 // trackpad/Mighty Mouse is used (which both provide continuous scrolling). | |
1033 // You must check to see which was used for the event by testing the | |
1034 // kCGScrollWheelEventIsContinuous field. | |
1035 // | |
1036 // Second, these events refer to "axes". Axis 1 is the y-axis, and axis 2 is | |
1037 // the x-axis. | |
1038 // | |
1039 // Third, there is a concept of mouse acceleration. Scrolling the same amoun
t | |
1040 // of physical distance will give you different results logically depending
on | |
1041 // whether you scrolled a little at a time or in one continuous motion. Some | |
1042 // fields account for this while others do not. | |
1043 // | |
1044 // Fourth, for trackpads there is a concept of chunkiness. When scrolling | |
1045 // continuously, events can be delivered in chunks. That is to say, lots of | |
1046 // scroll events with delta 0 will be delivered, and every so often an event | |
1047 // with a non-zero delta will be delivered, containing the accumulated delta
s | |
1048 // from all the intermediate moves. [2] | |
1049 // | |
1050 // For notchy wheel mice (kCGScrollWheelEventIsContinuous == 0) | |
1051 // ------------------------------------------------------------ | |
1052 // | |
1053 // kCGScrollWheelEventDeltaAxis* | |
1054 // This is the rawest of raw events. For each mouse notch you get a value
of | |
1055 // +1/-1. This does not take acceleration into account and thus is less | |
1056 // useful for building UIs. | |
1057 // | |
1058 // kCGScrollWheelEventPointDeltaAxis* | |
1059 // This is smarter. In general, for each mouse notch you get a value of | |
1060 // +1/-1, but this _does_ take acceleration into account, so you will get | |
1061 // larger values on longer scrolls. This field would be ideal for building | |
1062 // UIs except for one nasty bug: when the shift key is pressed, this set o
f | |
1063 // fields fails to move the value into the axis2 field (the other two type
s | |
1064 // of data do). This wouldn't be so bad except for the fact that while the | |
1065 // number of axes is used in the creation of a CGScrollWheelEvent, there i
s | |
1066 // no way to get that information out of the event once created. | |
1067 // | |
1068 // kCGScrollWheelEventFixedPtDeltaAxis* | |
1069 // This is a fixed value, and for each mouse notch you get a value of | |
1070 // +0.1/-0.1 (but, like above, scaled appropriately for acceleration). Thi
s | |
1071 // value takes acceleration into account, and in fact is identical to the | |
1072 // results you get from -[NSEvent delta*]. (That is, if you linked on Tige
r | |
1073 // or greater; see [2] for details.) | |
1074 // | |
1075 // A note about continuous devices | |
1076 // ------------------------------- | |
1077 // | |
1078 // There are two devices that provide continuous scrolling events (trackpads | |
1079 // and Mighty Mouses) and they behave rather differently. The Mighty Mouse | |
1080 // behaves a lot like a regular mouse. There is no chunking, and the | |
1081 // FixedPtDelta values are the PointDelta values multiplied by 0.1. With the | |
1082 // trackpad, though, there is chunking. While the FixedPtDelta values are | |
1083 // reasonable (they occur about every fifth event but have values five times | |
1084 // larger than usual) the Delta values are unreasonable. They don't appear t
o | |
1085 // accumulate properly. | |
1086 // | |
1087 // For continuous devices (kCGScrollWheelEventIsContinuous != 0) | |
1088 // ------------------------------------------------------------- | |
1089 // | |
1090 // kCGScrollWheelEventDeltaAxis* | |
1091 // This provides values with no acceleration. With a trackpad, these value
s | |
1092 // are chunked but each non-zero value does not appear to be cumulative. | |
1093 // This seems to be a bug. | |
1094 // | |
1095 // kCGScrollWheelEventPointDeltaAxis* | |
1096 // This provides values with acceleration. With a trackpad, these values a
re | |
1097 // not chunked and are highly accurate. | |
1098 // | |
1099 // kCGScrollWheelEventFixedPtDeltaAxis* | |
1100 // This provides values with acceleration. With a trackpad, these values a
re | |
1101 // chunked but unlike Delta events are properly cumulative. | |
1102 // | |
1103 // Summary | |
1104 // ------- | |
1105 // | |
1106 // In general the best approach to take is: determine if the event is | |
1107 // continuous. If it is not, then use the FixedPtDelta events (or just stick | |
1108 // with Cocoa events). They provide both acceleration and proper horizontal | |
1109 // scrolling. If the event is continuous, then doing pixel scrolling with th
e | |
1110 // PointDelta is the way to go. In general, avoid the Delta events. They're | |
1111 // the oldest (dating back to 10.4, before CGEvents were public) but they la
ck | |
1112 // acceleration and precision, making them useful only in specific edge case
s. | |
1113 // | |
1114 // References | |
1115 // ---------- | |
1116 // | |
1117 // [1] <http://developer.apple.com/documentation/Carbon/Reference/QuartzEven
tServicesRef/Reference/reference.html> | |
1118 // [2] <http://developer.apple.com/releasenotes/Cocoa/AppKitOlderNotes.html> | |
1119 // Scroll to the section headed "NSScrollWheel events". | |
1120 // | |
1121 // P.S. The "smooth scrolling" option in the system preferences is utterly | |
1122 // unrelated to any of this. | |
1123 | |
1124 CGEventRef cgEvent = [event CGEvent]; | |
1125 ASSERT(cgEvent); | |
1126 | |
1127 // Wheel ticks are supposed to be raw, unaccelerated values, one per physica
l | |
1128 // mouse wheel notch. The delta event is perfect for this (being a good | |
1129 // "specific edge case" as mentioned above). Trackpads, unfortunately, do | |
1130 // event chunking, and sending mousewheel events with 0 ticks causes some | |
1131 // websites to malfunction. Therefore, for all continuous input devices we u
se | |
1132 // the point delta data instead, since we cannot distinguish trackpad data | |
1133 // from data from any other continuous device. | |
1134 | |
1135 // Conversion between wheel delta amounts and number of pixels to scroll. | |
1136 static const double scrollbarPixelsPerCocoaTick = 40.0; | |
1137 | |
1138 if (CGEventGetIntegerValueField(cgEvent, kCGScrollWheelEventIsContinuous)) { | |
1139 result.deltaX = CGEventGetIntegerValueField(cgEvent, kCGScrollWheelEvent
PointDeltaAxis2); | |
1140 result.deltaY = CGEventGetIntegerValueField(cgEvent, kCGScrollWheelEvent
PointDeltaAxis1); | |
1141 result.wheelTicksX = result.deltaX / scrollbarPixelsPerCocoaTick; | |
1142 result.wheelTicksY = result.deltaY / scrollbarPixelsPerCocoaTick; | |
1143 result.hasPreciseScrollingDeltas = true; | |
1144 } else { | |
1145 result.deltaX = [event deltaX] * scrollbarPixelsPerCocoaTick; | |
1146 result.deltaY = [event deltaY] * scrollbarPixelsPerCocoaTick; | |
1147 result.wheelTicksY = CGEventGetIntegerValueField(cgEvent, kCGScrollWheel
EventDeltaAxis1); | |
1148 result.wheelTicksX = CGEventGetIntegerValueField(cgEvent, kCGScrollWheel
EventDeltaAxis2); | |
1149 } | |
1150 | |
1151 result.timeStampSeconds = [event timestamp]; | |
1152 | |
1153 result.phase = phaseForEvent(event); | |
1154 result.momentumPhase = momentumPhaseForEvent(event); | |
1155 | |
1156 return result; | |
1157 } | |
1158 | |
1159 WebGestureEvent WebInputEventFactory::gestureEvent(NSEvent *event, NSView *view) | |
1160 { | |
1161 WebGestureEvent result; | |
1162 | |
1163 // Use a temporary WebMouseEvent to get the location. | |
1164 WebMouseEvent temp; | |
1165 | |
1166 setWebEventLocationFromEventInView(&temp, event, view); | |
1167 result.x = temp.x; | |
1168 result.y = temp.y; | |
1169 result.globalX = temp.globalX; | |
1170 result.globalY = temp.globalY; | |
1171 | |
1172 result.modifiers = modifiersFromEvent(event); | |
1173 result.timeStampSeconds = [event timestamp]; | |
1174 | |
1175 result.sourceDevice = WebGestureDeviceTouchpad; | |
1176 switch ([event type]) { | |
1177 case NSEventTypeMagnify: | |
1178 result.type = WebInputEvent::GesturePinchUpdate; | |
1179 result.data.pinchUpdate.scale = [event magnification] + 1.0; | |
1180 break; | |
1181 case NSEventTypeSmartMagnify: | |
1182 // Map the Cocoa "double-tap with two fingers" zoom gesture to regular | |
1183 // GestureDoubleTap, because the effect is similar to single-finger | |
1184 // double-tap zoom on mobile platforms. Note that tapCount is set to 1 | |
1185 // because the gesture type already encodes that information. | |
1186 result.type = WebInputEvent::GestureDoubleTap; | |
1187 result.data.tap.tapCount = 1; | |
1188 break; | |
1189 case NSEventTypeBeginGesture: | |
1190 case NSEventTypeEndGesture: | |
1191 // The specific type of a gesture is not defined when the gesture begin | |
1192 // and end NSEvents come in. Leave them undefined. The caller will need | |
1193 // to specify them when the gesture is differentiated. | |
1194 result.type = WebInputEvent::Undefined; | |
1195 break; | |
1196 default: | |
1197 ASSERT_NOT_REACHED(); | |
1198 result.type = WebInputEvent::Undefined; | |
1199 } | |
1200 | |
1201 return result; | |
1202 } | |
1203 | |
1204 } // namespace blink | |
OLD | NEW |