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d3796c14 JM |
1 | /* |
2 | * noVNC: HTML5 VNC client | |
1d728ace | 3 | * Copyright (C) 2012 Joel Martin |
b2f1961a | 4 | * Copyright (C) 2013 Samuel Mannehed for Cendio AB |
1d728ace | 5 | * Licensed under MPL 2.0 or any later version (see LICENSE.txt) |
d3796c14 JM |
6 | */ |
7 | ||
d6e281ba | 8 | /*jslint browser: true, white: false */ |
d3796c14 JM |
9 | /*global window, Util */ |
10 | ||
ae510306 | 11 | /* [module] |
bd5340c7 SR |
12 | * import Util from "../util"; |
13 | * import KeyboardUtil from "./util"; | |
ae510306 SR |
14 | */ |
15 | ||
16 | /* [module] export */ var Keyboard; | |
d6e281ba SR |
17 | |
18 | (function () { | |
19 | "use strict"; | |
20 | ||
21 | // | |
22 | // Keyboard event handler | |
23 | // | |
24 | ||
25 | Keyboard = function (defaults) { | |
26 | this._keyDownList = []; // List of depressed keys | |
27 | // (even if they are happy) | |
28 | ||
29 | Util.set_defaults(this, defaults, { | |
30 | 'target': document, | |
31 | 'focused': true | |
32 | }); | |
33 | ||
34 | // create the keyboard handler | |
ae510306 SR |
35 | this._handler = new KeyboardUtil.KeyEventDecoder(KeyboardUtil.ModifierSync(), |
36 | KeyboardUtil.VerifyCharModifier( /* jshint newcap: false */ | |
37 | KeyboardUtil.TrackKeyState( | |
38 | KeyboardUtil.EscapeModifiers(this._handleRfbEvent.bind(this)) | |
d6e281ba SR |
39 | ) |
40 | ) | |
41 | ); /* jshint newcap: true */ | |
42 | ||
43 | // keep these here so we can refer to them later | |
44 | this._eventHandlers = { | |
45 | 'keyup': this._handleKeyUp.bind(this), | |
46 | 'keydown': this._handleKeyDown.bind(this), | |
47 | 'keypress': this._handleKeyPress.bind(this), | |
48 | 'blur': this._allKeysUp.bind(this) | |
49 | }; | |
50 | }; | |
51 | ||
52 | Keyboard.prototype = { | |
53 | // private methods | |
54 | ||
55 | _handleRfbEvent: function (e) { | |
56 | if (this._onKeyPress) { | |
57 | Util.Debug("onKeyPress " + (e.type == 'keydown' ? "down" : "up") + | |
58 | ", keysym: " + e.keysym.keysym + "(" + e.keysym.keyname + ")"); | |
8f06673a | 59 | this._onKeyPress(e); |
d6e281ba SR |
60 | } |
61 | }, | |
d3796c14 | 62 | |
8f06673a | 63 | setQEMUVNCKeyboardHandler: function () { |
ae510306 SR |
64 | this._handler = new KeyboardUtil.QEMUKeyEventDecoder(KeyboardUtil.ModifierSync(), |
65 | KeyboardUtil.TrackQEMUKeyState( | |
8f06673a DHB |
66 | this._handleRfbEvent.bind(this) |
67 | ) | |
68 | ); | |
69 | }, | |
70 | ||
d6e281ba SR |
71 | _handleKeyDown: function (e) { |
72 | if (!this._focused) { return true; } | |
d3796c14 | 73 | |
d6e281ba SR |
74 | if (this._handler.keydown(e)) { |
75 | // Suppress bubbling/default actions | |
76 | Util.stopEvent(e); | |
77 | return false; | |
78 | } else { | |
79 | // Allow the event to bubble and become a keyPress event which | |
80 | // will have the character code translated | |
81 | return true; | |
82 | } | |
83 | }, | |
d3796c14 | 84 | |
d6e281ba SR |
85 | _handleKeyPress: function (e) { |
86 | if (!this._focused) { return true; } | |
c96f9003 | 87 | |
d6e281ba SR |
88 | if (this._handler.keypress(e)) { |
89 | // Suppress bubbling/default actions | |
90 | Util.stopEvent(e); | |
91 | return false; | |
92 | } else { | |
93 | // Allow the event to bubble and become a keyPress event which | |
94 | // will have the character code translated | |
95 | return true; | |
96 | } | |
97 | }, | |
d3796c14 | 98 | |
d6e281ba SR |
99 | _handleKeyUp: function (e) { |
100 | if (!this._focused) { return true; } | |
d3796c14 | 101 | |
d6e281ba SR |
102 | if (this._handler.keyup(e)) { |
103 | // Suppress bubbling/default actions | |
104 | Util.stopEvent(e); | |
105 | return false; | |
106 | } else { | |
107 | // Allow the event to bubble and become a keyPress event which | |
108 | // will have the character code translated | |
109 | return true; | |
110 | } | |
111 | }, | |
112 | ||
113 | _allKeysUp: function () { | |
114 | Util.Debug(">> Keyboard.allKeysUp"); | |
115 | this._handler.releaseAll(); | |
116 | Util.Debug("<< Keyboard.allKeysUp"); | |
117 | }, | |
118 | ||
119 | // Public methods | |
120 | ||
121 | grab: function () { | |
122 | //Util.Debug(">> Keyboard.grab"); | |
123 | var c = this._target; | |
124 | ||
b4ef49ea SR |
125 | c.addEventListener('keydown', this._eventHandlers.keydown); |
126 | c.addEventListener('keyup', this._eventHandlers.keyup); | |
127 | c.addEventListener('keypress', this._eventHandlers.keypress); | |
d6e281ba SR |
128 | |
129 | // Release (key up) if window loses focus | |
b4ef49ea | 130 | window.addEventListener('blur', this._eventHandlers.blur); |
d6e281ba SR |
131 | |
132 | //Util.Debug("<< Keyboard.grab"); | |
133 | }, | |
134 | ||
135 | ungrab: function () { | |
136 | //Util.Debug(">> Keyboard.ungrab"); | |
137 | var c = this._target; | |
138 | ||
b4ef49ea SR |
139 | c.removeEventListener('keydown', this._eventHandlers.keydown); |
140 | c.removeEventListener('keyup', this._eventHandlers.keyup); | |
141 | c.removeEventListener('keypress', this._eventHandlers.keypress); | |
142 | window.removeEventListener('blur', this._eventHandlers.blur); | |
d3796c14 | 143 | |
d6e281ba SR |
144 | // Release (key up) all keys that are in a down state |
145 | this._allKeysUp(); | |
d3796c14 | 146 | |
d6e281ba SR |
147 | //Util.Debug(">> Keyboard.ungrab"); |
148 | }, | |
149 | ||
150 | sync: function (e) { | |
151 | this._handler.syncModifiers(e); | |
152 | } | |
153 | }; | |
154 | ||
155 | Util.make_properties(Keyboard, [ | |
156 | ['target', 'wo', 'dom'], // DOM element that captures keyboard input | |
157 | ['focused', 'rw', 'bool'], // Capture and send key events | |
158 | ||
159 | ['onKeyPress', 'rw', 'func'] // Handler for key press/release | |
5210330a | 160 | ]); |
ae510306 | 161 | })(); |
d3796c14 | 162 | |
ae510306 | 163 | /* [module] export */ var Mouse; |
d6e281ba | 164 | |
ae510306 | 165 | (function () { |
d6e281ba SR |
166 | Mouse = function (defaults) { |
167 | this._mouseCaptured = false; | |
168 | ||
169 | this._doubleClickTimer = null; | |
170 | this._lastTouchPos = null; | |
171 | ||
172 | // Configuration attributes | |
173 | Util.set_defaults(this, defaults, { | |
174 | 'target': document, | |
175 | 'focused': true, | |
176 | 'scale': 1.0, | |
177 | 'touchButton': 1 | |
178 | }); | |
179 | ||
180 | this._eventHandlers = { | |
181 | 'mousedown': this._handleMouseDown.bind(this), | |
182 | 'mouseup': this._handleMouseUp.bind(this), | |
183 | 'mousemove': this._handleMouseMove.bind(this), | |
184 | 'mousewheel': this._handleMouseWheel.bind(this), | |
185 | 'mousedisable': this._handleMouseDisable.bind(this) | |
186 | }; | |
187 | }; | |
188 | ||
189 | Mouse.prototype = { | |
190 | // private methods | |
191 | _captureMouse: function () { | |
192 | // capturing the mouse ensures we get the mouseup event | |
193 | if (this._target.setCapture) { | |
194 | this._target.setCapture(); | |
195 | } | |
196 | ||
197 | // some browsers give us mouseup events regardless, | |
198 | // so if we never captured the mouse, we can disregard the event | |
199 | this._mouseCaptured = true; | |
200 | }, | |
201 | ||
202 | _releaseMouse: function () { | |
203 | if (this._target.releaseCapture) { | |
204 | this._target.releaseCapture(); | |
205 | } | |
206 | this._mouseCaptured = false; | |
207 | }, | |
208 | ||
209 | _resetDoubleClickTimer: function () { | |
210 | this._doubleClickTimer = null; | |
211 | }, | |
b2f1961a | 212 | |
d6e281ba SR |
213 | _handleMouseButton: function (e, down) { |
214 | if (!this._focused) { return true; } | |
cf19ad37 | 215 | |
d6e281ba SR |
216 | if (this._notify) { |
217 | this._notify(e); | |
218 | } | |
b2f1961a | 219 | |
d6e281ba SR |
220 | var evt = (e ? e : window.event); |
221 | var pos = Util.getEventPosition(e, this._target, this._scale); | |
222 | ||
223 | var bmask; | |
224 | if (e.touches || e.changedTouches) { | |
225 | // Touch device | |
226 | ||
227 | // When two touches occur within 500 ms of each other and are | |
f52105bc | 228 | // close enough together a double click is triggered. |
d6e281ba SR |
229 | if (down == 1) { |
230 | if (this._doubleClickTimer === null) { | |
231 | this._lastTouchPos = pos; | |
232 | } else { | |
233 | clearTimeout(this._doubleClickTimer); | |
234 | ||
235 | // When the distance between the two touches is small enough | |
236 | // force the position of the latter touch to the position of | |
237 | // the first. | |
238 | ||
239 | var xs = this._lastTouchPos.x - pos.x; | |
240 | var ys = this._lastTouchPos.y - pos.y; | |
241 | var d = Math.sqrt((xs * xs) + (ys * ys)); | |
242 | ||
243 | // The goal is to trigger on a certain physical width, the | |
244 | // devicePixelRatio brings us a bit closer but is not optimal. | |
f52105bc | 245 | var threshold = 20 * (window.devicePixelRatio || 1); |
246 | if (d < threshold) { | |
d6e281ba SR |
247 | pos = this._lastTouchPos; |
248 | } | |
249 | } | |
250 | this._doubleClickTimer = setTimeout(this._resetDoubleClickTimer.bind(this), 500); | |
a4ec2f5c | 251 | } |
d6e281ba SR |
252 | bmask = this._touchButton; |
253 | // If bmask is set | |
254 | } else if (evt.which) { | |
255 | /* everything except IE */ | |
256 | bmask = 1 << evt.button; | |
257 | } else { | |
258 | /* IE including 9 */ | |
259 | bmask = (evt.button & 0x1) + // Left | |
260 | (evt.button & 0x2) * 2 + // Right | |
261 | (evt.button & 0x4) / 2; // Middle | |
b2f1961a | 262 | } |
d6e281ba SR |
263 | |
264 | if (this._onMouseButton) { | |
265 | Util.Debug("onMouseButton " + (down ? "down" : "up") + | |
266 | ", x: " + pos.x + ", y: " + pos.y + ", bmask: " + bmask); | |
267 | this._onMouseButton(pos.x, pos.y, down, bmask); | |
268 | } | |
269 | Util.stopEvent(e); | |
270 | return false; | |
271 | }, | |
272 | ||
273 | _handleMouseDown: function (e) { | |
274 | this._captureMouse(); | |
275 | this._handleMouseButton(e, 1); | |
276 | }, | |
277 | ||
278 | _handleMouseUp: function (e) { | |
279 | if (!this._mouseCaptured) { return; } | |
280 | ||
281 | this._handleMouseButton(e, 0); | |
282 | this._releaseMouse(); | |
283 | }, | |
284 | ||
285 | _handleMouseWheel: function (e) { | |
286 | if (!this._focused) { return true; } | |
287 | ||
288 | if (this._notify) { | |
289 | this._notify(e); | |
290 | } | |
291 | ||
292 | var evt = (e ? e : window.event); | |
293 | var pos = Util.getEventPosition(e, this._target, this._scale); | |
294 | var wheelData = evt.detail ? evt.detail * -1 : evt.wheelDelta / 40; | |
295 | var bmask; | |
296 | if (wheelData > 0) { | |
297 | bmask = 1 << 3; | |
298 | } else { | |
299 | bmask = 1 << 4; | |
300 | } | |
301 | ||
302 | if (this._onMouseButton) { | |
303 | this._onMouseButton(pos.x, pos.y, 1, bmask); | |
304 | this._onMouseButton(pos.x, pos.y, 0, bmask); | |
305 | } | |
306 | Util.stopEvent(e); | |
307 | return false; | |
308 | }, | |
309 | ||
310 | _handleMouseMove: function (e) { | |
311 | if (! this._focused) { return true; } | |
312 | ||
313 | if (this._notify) { | |
314 | this._notify(e); | |
315 | } | |
316 | ||
317 | var evt = (e ? e : window.event); | |
318 | var pos = Util.getEventPosition(e, this._target, this._scale); | |
319 | if (this._onMouseMove) { | |
320 | this._onMouseMove(pos.x, pos.y); | |
321 | } | |
322 | Util.stopEvent(e); | |
323 | return false; | |
324 | }, | |
325 | ||
326 | _handleMouseDisable: function (e) { | |
327 | if (!this._focused) { return true; } | |
328 | ||
329 | var evt = (e ? e : window.event); | |
330 | var pos = Util.getEventPosition(e, this._target, this._scale); | |
331 | ||
332 | /* Stop propagation if inside canvas area */ | |
333 | if ((pos.realx >= 0) && (pos.realy >= 0) && | |
334 | (pos.realx < this._target.offsetWidth) && | |
335 | (pos.realy < this._target.offsetHeight)) { | |
336 | //Util.Debug("mouse event disabled"); | |
337 | Util.stopEvent(e); | |
338 | return false; | |
339 | } | |
340 | ||
341 | return true; | |
342 | }, | |
343 | ||
344 | ||
345 | // Public methods | |
346 | grab: function () { | |
347 | var c = this._target; | |
348 | ||
349 | if ('ontouchstart' in document.documentElement) { | |
b4ef49ea SR |
350 | c.addEventListener('touchstart', this._eventHandlers.mousedown); |
351 | window.addEventListener('touchend', this._eventHandlers.mouseup); | |
352 | c.addEventListener('touchend', this._eventHandlers.mouseup); | |
353 | c.addEventListener('touchmove', this._eventHandlers.mousemove); | |
d6e281ba | 354 | } else { |
b4ef49ea SR |
355 | c.addEventListener('mousedown', this._eventHandlers.mousedown); |
356 | window.addEventListener('mouseup', this._eventHandlers.mouseup); | |
357 | c.addEventListener('mouseup', this._eventHandlers.mouseup); | |
358 | c.addEventListener('mousemove', this._eventHandlers.mousemove); | |
359 | c.addEventListener((Util.Engine.gecko) ? 'DOMMouseScroll' : 'mousewheel', | |
d6e281ba SR |
360 | this._eventHandlers.mousewheel); |
361 | } | |
362 | ||
363 | /* Work around right and middle click browser behaviors */ | |
b4ef49ea SR |
364 | document.addEventListener('click', this._eventHandlers.mousedisable); |
365 | document.body.addEventListener('contextmenu', this._eventHandlers.mousedisable); | |
d6e281ba SR |
366 | }, |
367 | ||
368 | ungrab: function () { | |
369 | var c = this._target; | |
370 | ||
371 | if ('ontouchstart' in document.documentElement) { | |
b4ef49ea SR |
372 | c.removeEventListener('touchstart', this._eventHandlers.mousedown); |
373 | window.removeEventListener('touchend', this._eventHandlers.mouseup); | |
374 | c.removeEventListener('touchend', this._eventHandlers.mouseup); | |
375 | c.removeEventListener('touchmove', this._eventHandlers.mousemove); | |
d6e281ba | 376 | } else { |
b4ef49ea SR |
377 | c.removeEventListener('mousedown', this._eventHandlers.mousedown); |
378 | window.removeEventListener('mouseup', this._eventHandlers.mouseup); | |
379 | c.removeEventListener('mouseup', this._eventHandlers.mouseup); | |
380 | c.removeEventListener('mousemove', this._eventHandlers.mousemove); | |
381 | c.removeEventListener((Util.Engine.gecko) ? 'DOMMouseScroll' : 'mousewheel', | |
d6e281ba SR |
382 | this._eventHandlers.mousewheel); |
383 | } | |
384 | ||
385 | /* Work around right and middle click browser behaviors */ | |
b4ef49ea SR |
386 | document.removeEventListener('click', this._eventHandlers.mousedisable); |
387 | document.body.removeEventListener('contextmenu', this._eventHandlers.mousedisable); | |
d6e281ba | 388 | |
b2f1961a | 389 | } |
d6e281ba SR |
390 | }; |
391 | ||
392 | Util.make_properties(Mouse, [ | |
393 | ['target', 'ro', 'dom'], // DOM element that captures mouse input | |
394 | ['notify', 'ro', 'func'], // Function to call to notify whenever a mouse event is received | |
395 | ['focused', 'rw', 'bool'], // Capture and send mouse clicks/movement | |
396 | ['scale', 'rw', 'float'], // Viewport scale factor 0.0 - 1.0 | |
397 | ||
398 | ['onMouseButton', 'rw', 'func'], // Handler for mouse button click/release | |
399 | ['onMouseMove', 'rw', 'func'], // Handler for mouse movement | |
400 | ['touchButton', 'rw', 'int'] // Button mask (1, 2, 4) for touch devices (0 means ignore clicks) | |
401 | ]); | |
402 | })(); |