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How to use pinch method in Airtest
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jquery.pinchzoomer.js
Source:jquery.pinchzoomer.js 
1/*!2 * VERSION: 1.1 beta3 * DATE: 07-17-20154 * 5 * PinchZoomer jQuery Plugin6 *7 * @license Copyright (c) 2014, Ron Feliciano. All rights reserved.8 * This work is subject to the terms at http://codecanyon.net/licenses9 * 10 * @author: Ron Feliciano11 * contact me through http://codecanyon.net/user/ronfeliciano/?ref=ronfeliciano12 **/13 14(function(window, $)15{16 var ua = navigator.userAgent;17 18 function Utils()19 {20 21 }22 23 Utils.isFirefox = ua.indexOf('firefox') >= 0;24 Utils.isAndroid = (ua.indexOf("Android") >= 0);25 Utils.androidVer = (Utils.isAndroid) ? parseFloat(ua.slice(ua.indexOf("Android")+8)) : null;26 27 Utils.isiPad = navigator.userAgent.match(/iPad/i) != null;28 Utils.isiPhone = (navigator.platform.indexOf("iPhone") != -1) || (navigator.platform.indexOf("iPod") != -1);29 30 31 Utils.browser = (function()32 {33 var ua= navigator.userAgent, 34 tem, 35 M = ua.match(/(opera|chrome|safari|firefox|msie|trident(?=\/))\/?\s*([\d\.]+)/i) || [];36 37 if(/trident/i.test(M[1]))38 {39 tem= /\brv[ :]+(\d+(\.\d+)?)/g.exec(ua) || [];40 return {name:"IE", version:(tem[1] || '') };41 }42 M = M[2] ? [M[1], M[2]] : [navigator.appName, navigator.appVersion, '-?'];43 44 if((tem= ua.match(/version\/([\.\d]+)/i))!= null) 45 {46 M[2]= tem[1];47 }48 49 if(M.length > 2)50 {51 return {name:M[0], version:M[2] };52 }53 else54 {55 return {name:M[0], version:M[1] };56 }57 58 })();59 Utils.objectToString = function(o)60 {61 var parse = function(_o)62 {63 var a = [], t;64 for(var p in _o)65 {66 if(_o.hasOwnProperty(p))67 {68 t = _o[p];69 if(t && typeof t == "object")70 {71 a[a.length]= p + ":{ " + arguments.callee(t).join(", ") + "}";72 }73 else 74 {75 if(typeof t == "string")76 {77 a[a.length] = [ p+ ": \"" + t.toString() + "\"" ];78 }79 else80 {81 if(t != null)82 {83 a[a.length] = [ p+ ": " + t.toString()];84 }85 }86 }87 }88 }89 90 return a;91 }92 93 return "{" + parse(o).join(", ") + "}";94 }95 96 Utils.getRealValue = function (str)97 {98 val = str;99 if(str !== undefined)100 {101 if(!isNaN(Number(str)))102 {103 val = Number(str);104 }105 else if(str.toLowerCase !== undefined && (str.toLowerCase() == "true" || str.toLowerCase() == "false"))106 {107 val = (str.toLowerCase() == "true");108 }109 else110 {111 var temp = Utils.getObj(str);112 if(temp != null)113 {114 val = temp;115 }116 }117 }118 119 return val;120 }121 122 Utils.getObj = function(str)123 {124 str = (str === undefined) ? "" : str;125 var f = window;126 var m = str.split(".");127 var length = m.length;128 for(var i = 0; i < length; i++)129 {130 if(f[m[i]] !== undefined)131 {132 f = f[m[i]];133 }134 else135 {136 i = length; 137 }138 }139 140 f = (f !== window) ? f : null;141 142 return f;143 }144 145 Utils.getObjects = function(value)146 {147 var objectNames = value.split(";");148 var objects = [];149 var i;150 var length = objectNames.length;151 152 if(length == 0)153 {154 objectNames = value.split(",");155 length = objectNames.length;156 }157 158 for(i = 0; i < length; i++)159 {160 var objectName = Utils.hyphenToCamelCase($.trim(objectNames[i]));161 var object = Utils.getObj(objectName);162 if(object != null)163 {164 if($.isArray(object))165 {166 var objectLength = object.length;167 var j;168 for(j = 0; j < objectLength; j++)169 {170 objects.push(object[j]);171 }172 }173 else174 {175 objects.push(object); 176 }177 }178 }179 180 return objects;181 }182 183 Utils.getScope = function(str)184 { 185 var f = window;186 var m = str.split(".");187 188 if(m.length > 0)189 {190 var length = m.length;191 for(var i = 1; i < length - 1; i++)192 {193 if(f[m[i]] !== undefined)194 {195 f = f[m[i]];196 }197 else198 {199 i = length; 200 } 201 }202 }203 204 return f;205 }206 207 Utils.getParams = function(str)208 {209 var params = null;210 if(str !== undefined)211 {212 params = [];213 var values = str.split(",");214 var i;215 var length = values.length;216 for(i = 0; i < values.length; i++)217 {218 params.push(Utils.getRealValue($.trim(values[i])))219 }220 }221 222 return params;223 }224 225 Utils.trimSpaces = function(str)226 {227 var trimStr = "";228 if(str !== undefined)229 {230 trimStr = str;231 var length = trimStr.length;232 var startIndex = 0;233 var endIndex = length - 1;234 var i;235 236 for(i = 0; i < length; i++)237 {238 if(trimStr.charAt(i) != ' ')239 {240 startIndex = i;241 i = length;242 }243 }244 245 for(i = length - 1; i >= 0; i--)246 {247 if(trimStr.charAt(i) != ' ')248 {249 endIndex = i;250 i = -1;251 }252 }253 254 trimStr = trimStr.substr(startIndex, endIndex - startIndex + 1);255 }256 257 return trimStr;258 }259 260 Utils.getAttrObjectFromString = function(str, initObject)261 {262 str = str || "";263 var o = (initObject == null) ? {} : initObject;264 265 if(str != "")266 {267 var groups = str.split(";"),268 i,269 length = groups.length;270 271 if(length == 0)272 {273 groups = str.split(",");274 length = groups.length;275 }276 277 for(i = 0; i < length; i++)278 {279 var attr = groups[i].split(":"),280 prop = Utils.hyphenToCamelCase($.trim(attr[0])),281 val = attr[1];282 283 for(var j = 2; j < attr.length; j++)284 {285 val += ":" + attr[j];286 }287 288 val = Utils.getRealValue($.trim(val));289 290 291 if(prop != "")292 {293 o[prop] = val; 294 }295 }296 }297 298 return o;299 }300 301 Utils.getChildAttrObjectFromElem = function(elem, pluginName)302 {303 var o = {};304 305 var children = elem.children();306 var length = children.length;307 for (var i = 0; i < length; i++)308 { 309 var child = children.eq(i);310 if(child.is(pluginName))311 {312 var elemChild = children.get(i);313 for (var j = 0; j < elemChild.attributes.length; j++) 314 {315 var attr = elemChild.attributes[j];316 o[attr.name] = getRealValue(attr.value);317 }318 }319 }320 321 return o;322 }323 324 Utils.hyphenToCamelCase = function(value)325 {326 return value.replace(/-([a-z])/gi, function(s, g) { return g.toUpperCase(); } );327 }328 329 Utils.getStyleSheetObject = function (selector)330 {331 var styleObj = {};332 333 for(var i = 0; i < document.styleSheets.length; i++)334 {335 var cssRules = document.styleSheets[i].cssRules || document.styleSheets[i].rules || [];336 for(var j = 0; j < cssRules.length; j++)337 {338 var selectorText = cssRules[j].selectorText;339 if(selectorText !== undefined)340 {341 var selectors = selectorText.split(",");342 343 for(var k = 0; k < selectors.length; k++)344 {345 var styleSelector = $.trim(selectors[k]);346 if(styleSelector == selector)347 {348 styleObj = $.extend(styleObj, Utils.getAttrObjectFromString(cssRules[j].style.cssText));349 }350 }351 }352 }353 }354 355 return styleObj;356 }357 358 Utils.preventDefault = function (e)359 {360 if (e.preventDefault) 361 { 362 e.preventDefault(); 363 } 364 else 365 { 366 e.returnValue = false; 367 }368 }369 370 Utils.preventGestureDefault = function (e)371 {372 e.gesture.preventDefault();373 }374 375 Utils.shuffleArray = function(array) 376 {377 var currentIndex = array.length, 378 temporaryValue,379 randomIndex;380 381 while (0 !== currentIndex) 382 {383 randomIndex = Math.floor(Math.random() * currentIndex);384 currentIndex -= 1;385 386 temporaryValue = array[currentIndex];387 array[currentIndex] = array[randomIndex];388 array[randomIndex] = temporaryValue;389 }390 391 return array;392 }393 394 window.Utils = Utils;395 396}(window, jQuery));397(function(window, $)398{399 function PinchZoomer(_pinchZoomerDiv, imageUrl, varsObj)400 {401 TweenLite.defaultOverwrite = "auto";402 //_vars403 var _vars = $.extend({ animDuration:0.3, maxZoom:5, minZoom:1, ease:Power4.easeOut, allowZoom:true, allowMouseWheel:true, doubleTapZoom:2, zoomStep:0.5, adjustWidth:0, adjustHeight:0, preloaderUrl:null, resizeDuration:-1, initXPercent:0.5, initYPercent:0.5, scrollTarget:window, force3D:true, onZoom:null, onZoomParams:null, onZoomStart:null, onZoomStartParams:null, onZoomComplete:null, onZoomCompleteParams:null, onImageLoad:null, onImageLoadParams:null, onInit:null, onInitParams:null, handleOverDragX:true, handleOverDragY:false }, varsObj),404 //elements405 pinchZoomerDiv = $(_pinchZoomerDiv),406 imageHolder = $("<div style='position:absolute; width:100%; height:100%; overflow:hidden; -ms-touch-action:none; touch-action:none;'></div>"),407 _image = $("<img style='position:absolute; max-width:none; display:block;'>").load(onImageLoad),408 preloader = ($.type(_vars.preloaderUrl) === "string") ? $("<img style='position:absolute; max-width:none; display:block;'>").load( onPreloaderImageLoad ) : null,409 hiddenHolder = $("<div style='width:1px; height:1px; left:-1px; top:-1px; position:absolute; overflow:hidden'></div>"),410 411 //size _vars412 _imageHolderWidth = -1,413 _imageHolderHeight = -1,414 prevHolderWidth = -1,415 prevHolderHeight = -1,416 _imageWidth = 0,417 _imageHeight = 0,418 preloaderWidth = 0,419 preloaderHeight = 0,420 _newImageWidth = 0,421 _newImageHeight = 0,422 realLeft = 0,423 realTop = 0,424 _imageLoaded = false,425 mouseEnabled = true,426 mouseTweenObj = {},427 428 //browser function test429 useTransform = (window.Modernizr != undefined) ? Modernizr.csstransforms : true,430 431 //touch events432 touchHandler = null,433 imageTouchHandler = null,434 435 //transform _vars436 endZoom = 1,437 computedZoom = 1,438 oldZoom = -1,439 curX = 0,440 curY = 0,441 oldX = 0,442 oldY = 0,443 oldScalePosObj = {spx:0, spy:0, nspx:0, nspy:0, cx:0, cy:0},444 parScalePosObj = {spx:0, spy:0, nspx:0, nspy:0, cx:0, cy:0},445 newScalePosObj = {spx:0, spy:0, nspx:0, nspy:0, cx:0, cy:0},446 dragDistanceX = 0,447 dragDistanceY = 0,448 snap = false,449 oldSlideIndex = 0,450 startDragX = 0,451 startDragY = 0,452 touchCount = 0,453 oldTouchCount = -1,454 touchId = 0,455 oldTouchId = -1,456 transformInit = false,457 dragInit = false,458 touchReady = true,459 useControls = false,460 sliderLeft = 0,461 sliderTop = 0,462 startScrollX = 0,463 startScrollY = 0,464 startScrollLeft = 0,465 startScrollTop = 0,466 appendScrollX = 0,467 appendScrollY = 0,468 scrollInit = true,469 useSize = false,470 _enableMouseWheel = _vars.allowMouseWheel,471 multiPointer = (navigator.msMaxTouchPoints && navigator.msMaxTouchPoints > 1) || (navigator.maxTouchPoints && navigator.maxTouchPoints > 1),472 curTouchAction = "",473 panTouchAction = "pan-x pan-y",474 use3D = Utils.browser.name != "Chrome" && !useSize;475 476 var zoomSpx = null,477 zoomSpy = null;478 479 if($(_vars.scrollTarget).length != 0)480 {481 _vars.scrollTarget = $(_vars.scrollTarget);482 }483 else484 {485 _vars.scrollTarget = $(window);486 }487 488 this.zoomIn = _zoomIn;489 this.zoomOut = _zoomOut;490 this.zoom = _zoom;491 this.imageWidth = getImageWidth;492 this.imageHeight = getImageHeight;493 this.newImageWidth = getNewImageWidth;494 this.newImageHeight = getNewImageHeight;495 this.resize = onWindowResize;496 this.imageLoaded = isImageLoaded;497 this.image = _image;498 this.vars = _vars;499 this.imageX = _imageX;500 this.imageY = _imageY;501 this.imageHolderWidth = getImageHolderWidth;502 this.imageHolderHeight = getImageHolderHeight;503 504 this.naturalWidth = getImageWidth;505 this.naturalHeight = getImageHeight;506 this.naturalOffsetX = getNaturalOffsetX;507 this.naturalOffsetY = getNaturalOffsetY;508 this.enableMouseWheel = enableMouseWheel;509 510 _init();511 512 function _init()513 {514 pinchZoomerDiv.prepend(imageHolder);515 useSize = (Utils.isAndroid || Utils.isiPad || Utils.isiPhone) && (imageUrl.indexOf(".svg") != -1) || (Utils.androidVer !== null && Utils.androidVer < 3);516 517 518 $("body").append(hiddenHolder);519 520 if(preloader != null)521 {522 TweenMax.set(preloader, { autoAlpha:0 } );523 hiddenHolder.append(preloader);524 preloader.attr("src", _vars.preloaderUrl);525 }526 527 hiddenHolder.append(_image);528 TweenMax.set(_image, { autoAlpha:0 } );529 _image.attr("src", imageUrl);530 531 onWindowResize();532 533 //touch events534 touchHandler = imageHolder.hammer( 535 {536 swipe:false,537 dragMaxTouches: 4538 });539 540 var touchEvt = "touchstart touchend";541 542 if(window.PointerEvent) 543 {544 touchEvt = "pointerdown pointerup";545 } 546 else if (window.MSPointerEvent)547 {548 touchEvt = "MSPointerDown MSPointerUp";549 }550 else551 {552 //enableMouse(); 553 }554 555 //touchHandler.on(touchEvt, onTouch);556 touchHandler.on("gesture", onGesture);557 558 if(_vars.allowZoom && _vars.allowMouseWheel)559 {560 imageHolder.on("mousewheel", Utils.preventDefault);561 imageHolder.on("mousewheel", onImageWheel);562 }563 564 imageTouchHandler = _image.hammer( 565 {566 dragMinDistance: 0,567 swipe:false,568 dragMaxTouches: 4569 });570 571 imageTouchHandler.on("doubletap", onDoubleTap);572 //document.ondragstart = function () { return false; };573 //imageTouchHandler.on("drag", Utils.preventGestureDefault);574 575 if(_vars.scaleMode != "fullWidth" && _vars.scaleMode != "fullHeight")576 {577 _vars.initXPercent = 0.5;578 _vars.initYPercent = 0.5;579 }580 581 $(window).resize(onWindowResize);582 583 if(!isNaN(_vars.resizeDuration) && _vars.resizeDuration > 0)584 {585 TweenMax.to(this, _vars.resizeDuration, { onRepeat:onWindowResize, repeat:-1 } );586 }587 }588 589 function onGesture(e)590 {591 var type = e.gesture.eventType;592 593 touchCount = e.gesture.touches.length;594 if(type != "move")595 {596 if(type == "end")597 {598 touchCount = 0; 599 if(touchCount > 1 || endZoom > 1)600 {601 setTouchAction("none");602 603 }604 else 605 {606 setTouchAction(panTouchAction);607 } 608 }609 if(touchCount != oldTouchCount)610 {611 setupGestures();612 }613 oldTouchCount = touchCount;614 if(touchCount > 1 || endZoom > 1)615 {616 setTouchAction("none");617 e.gesture.srcEvent.preventDefault(); 618 }619 else 620 {621 setTouchAction(panTouchAction);622 }623 }624 625 if(touchCount > 1 || endZoom > 1)626 {627 e.gesture.srcEvent.preventDefault(); 628 }629 }630 631 function setTouchAction(value)632 {633 if(multiPointer && value != curTouchAction)634 {635 curTouchAction = value;636 if(imageHolder != null)637 {638 TweenLite.set(imageHolder, { touchAction:curTouchAction });639 }640 }641 }642 643 function enableMouseWheel(val)644 {645 if(val !== undefined)646 {647 _enableMouseWheel = val == true;648 if(_enableMouseWheel)649 {650 imageHolder.on("mousewheel", Utils.preventDefault);651 imageHolder.on("mousewheel", onImageWheel);652 }653 else654 {655 imageHolder.off("mousewheel", Utils.preventDefault);656 imageHolder.off("mousewheel", onImageWheel);657 }658 }659 660 return _enableMouseWheel;661 }662 663 function onPreloaderImageLoad(e)664 {665 if(!_imageLoaded)666 {667 preloaderWidth = preloader.width();668 preloaderHeight = preloader.height();669 670 var preloaderX = ((_imageHolderWidth - preloaderWidth) * 0.5) + "px",671 preloaderY = ((_imageHolderHeight - preloaderHeight) * 0.5) + "px";672 673 TweenMax.set(preloader, { position:"absolute", maxWidth:"none", x:preloaderX, y:preloaderY, autoAlpha:1} );674 imageHolder.append(preloader);675 }676 }677 678 function onWindowResize(e)679 {680 var forceResize = ($.type(e) === "boolean") ? e : false;681 682 _imageHolderWidth = imageHolder.width() + _vars.adjustWidth;683 _imageHolderHeight = imageHolder.height() + _vars.adjustHeight;684 685 if(forceResize || prevHolderWidth != _imageHolderWidth || prevHolderHeight != _imageHolderHeight)686 {687 688 if(preloaderWidth != 0)689 {690 onPreloaderImageLoad();691 }692 693 resetImage();694 695 dragDistanceX = 0;696 dragDistanceY = 0;697 698 resetTransform();699 700 touchCount = 0;701 touchId = 0;702 oldTouchId = -1;703 snap = false;704 touchReady = true;705 706 prevHolderWidth = _imageHolderWidth;707 prevHolderHeight = _imageHolderHeight;708 }709 }710 711 function onImageLoad(e)712 {713 TweenMax.set(_image, { width:"auto", height:"auto" } );714 _imageWidth = _image.width();715 _imageHeight = _image.height();716 _imageLoaded = true;717 718 TweenMax.to(_image, _vars.animDuration, { autoAlpha:1, ease:_vars.ease } );719 TweenMax.set(_image, { display:"block" } );720 if(preloader != null)721 {722 preloader.detach();723 }724 725 imageHolder.prepend(_image);726 727 resetImage();728 onWindowResize();729 730 if($.isFunction(_vars.onImageLoad))731 {732 _vars.onImageLoad.apply(null, _vars.onImageLoadParams);733 }734 735 if($.isFunction(_vars.onInit))736 {737 _vars.onInit.apply(null, _vars.onInitParams);738 }739 740 }741 742 function getImageWidth()743 {744 return _imageWidth; 745 }746 747 function getImageHeight()748 {749 return _imageHeight; 750 }751 752 function getNaturalWidth()753 {754 return _imageWidth; 755 }756 757 function getNaturalHeight()758 {759 return _imageHeight; 760 }761 762 function getNaturalOffsetX()763 {764 return curX / _newImageWidth;765 }766 767 function getNaturalOffsetY()768 {769 return curY / _newImageHeight;770 }771 772 function getNewImageWidth()773 {774 return _newImageWidth; 775 }776 777 function getNewImageHeight()778 {779 return _newImageHeight; 780 }781 782 function isImageLoaded()783 {784 return _imageLoaded; 785 }786 787 function resetImage()788 {789 if(_imageLoaded)790 {791 if(_imageWidth == 0 || _imageHeight == 0)792 {793 _imageWidth = _image.width();794 _imageHeight = _image.height();795 }796 797 var tempImageWidth = _imageWidth,798 tempImageHeight = _imageHeight,799 horizontalScale = _imageHolderWidth / tempImageWidth, 800 verticalScale = _imageHolderHeight / tempImageHeight,801 curScale = horizontalScale;802 803 if(_vars.scaleMode == "fullWidth")804 {805 curScale = horizontalScale;806 }807 else if(_vars.scaleMode == "fullHeight")808 {809 curScale = verticalScale;810 }811 else if(tempImageHeight * horizontalScale > _imageHolderHeight)812 {813 curScale = verticalScale;814 }815 816 if(tempImageWidth == 0 || tempImageHeight == 0 || isNaN(curScale))817 {818 curScale = 1;819 }820 821 _newImageWidth = Math.ceil(tempImageWidth * curScale),822 _newImageHeight = Math.ceil(tempImageHeight * curScale);823 824 _imageWidth = tempImageWidth;825 _imageHeight = tempImageHeight;826 827 realLeft = ((((_imageHolderWidth - _newImageWidth) * _vars.initXPercent)) >> 0);828 realTop = ((((_imageHolderHeight - _newImageHeight) * _vars.initYPercent)) >> 0);829 830 831 var cssObj = { width:_newImageWidth, height:_newImageHeight, left:realLeft + "px", top:realTop + "px" };832 833 if(useTransform && !useSize)834 {835 cssObj.scale = 1;836 cssObj.transformOrigin = "0 0";837 cssObj.x = 0;838 cssObj.y = 0; 839 }840 else841 {842 cssObj.marginLeft = 0;843 cssObj.marginTop = 0; 844 }845 846 TweenMax.set(_image, cssObj);847 }848 }849 850 function onImageWheel(e, delta, deltaX, deltaY)851 {852 if(_vars.allowZoom)853 {854 sliderLeft = imageHolder.offset().left;855 sliderTop = imageHolder.offset().top;856 var spx = (e.pageX - realLeft - curX - sliderLeft) / endZoom,857 spy = (e.pageY - realTop - curY - sliderTop) / endZoom;858 859 initZoom(spx, spy);860 if(delta > 0)861 {862 computedZoom += _vars.zoomStep;863 }864 else865 {866 computedZoom -= _vars.zoomStep;867 }868 setPosition();869 adjustPosition();870 endZoom = computedZoom;871 872 handleZoom();873 }874 875 Utils.preventDefault(e);876 }877 878 function onTouch(e)879 {880 var type = e.type;881 882 if(type !== undefined && type.indexOf("ointer") != -1)883 {884 if(type == "pointerdown" || type == "MSPointerDown")885 {886 touchCount ++;887 }888 else if(type == "pointerup" || type == "MSPointerUp")889 {890 touchCount --;891 if(touchCount < 0)892 {893 touchCount = 0;894 }895 }896 }897 else898 {899 touchCount = e.originalEvent.touches.length;900 if(touchCount > 0)901 {902 TweenMax.to(mouseTweenObj, 0.0, { onComplete:disableMouse } );903 }904 else905 {906 TweenMax.to(mouseTweenObj, 0.5, { onComplete:enableMouse } );907 }908 }909 910 if(touchCount != oldTouchCount)911 {912 setupGestures();913 }914 915 oldTouchCount = touchCount;916 }917 918 function onImageDown(e)919 {920 921 if(mouseEnabled)922 {923 touchCount = 1;924 925 if(touchCount != oldTouchCount)926 {927 setupGestures();928 }929 930 oldTouchCount = touchCount;931 }932 933 }934 935 function onImageUp(e)936 {937 938 if(mouseEnabled)939 {940 touchCount = 0;941 942 if(touchCount != oldTouchCount)943 {944 setupGestures();945 }946 947 oldTouchCount = touchCount;948 }949 950 }951 952 function enableMouse()953 {954 imageHolder.on("mousedown", onImageDown);955 imageHolder.on("mouseup mouseleave", onImageUp);956 mouseEnabled = true;957 }958 959 function disableMouse()960 {961 imageHolder.off("mousedown", onImageDown);962 imageHolder.off("mouseup mouseleave", onImageUp);963 mouseEnabled = false;964 }965 966 function setupGestures()967 {968 touchId = (touchCount > 1) ? 2 : touchCount;969 var gestureInit = (touchId != oldTouchId);970 971 if(touchCount == 1)972 {973 if(touchReady)974 {975 dragInit = gestureInit;976 disableTransform();977 enableDrag();978 }979 980 if(oldTouchId == 2)981 {982 endZoom = computedZoom;983 }984 }985 else if(touchCount > 1)986 {987 if(touchReady)988 {989 transformInit = gestureInit;990 disableDrag();991 enableTransform();992 }993 }994 else995 {996 disableTransform();997 disableDrag();998 onGestureEnd();999 }1000 1001 oldTouchId = touchId;1002 }1003 1004 function onGestureEnd()1005 {1006 endZoom = computedZoom;1007 }1008 1009 function enableDrag()1010 {1011 dragInit = true;1012 scrollInit = true;1013 touchHandler.on("drag", onDrag);1014 }1015 1016 function enableTransform()1017 {1018 if(_vars.allowZoom)1019 {1020 touchHandler.on("transform", onTransform);1021 }1022 }1023 1024 function disableDrag()1025 {1026 touchHandler.off("drag", onDrag);1027 }1028 1029 function disableTransform()1030 {1031 touchHandler.off("transform", onTransform);1032 }1033 1034 function onDoubleTap(e)1035 {1036 sliderLeft = imageHolder.offset().left;1037 sliderTop = imageHolder.offset().top;1038 var spx = (e.gesture.touches[0].pageX - realLeft - curX - sliderLeft) / endZoom,1039 spy = (e.gesture.touches[0].pageY- realTop - curY - sliderTop) / endZoom;1040 1041 initZoom(spx, spy);1042 transformInit = false;1043 1044 computedZoom = (endZoom == 1) ? _vars.doubleTapZoom : 1;1045 1046 setPosition();1047 adjustPosition();1048 endZoom = computedZoom;1049 handleZoom();1050 }1051 1052 function onTransform(e)1053 {1054 if(transformInit)1055 { 1056 sliderLeft = imageHolder.offset().left;1057 sliderTop = imageHolder.offset().top;1058 var spx = (e.gesture.center.pageX - realLeft - curX - sliderLeft) / endZoom,1059 spy = (e.gesture.center.pageY - realTop - curY - sliderTop) / endZoom;1060 1061 initZoom(spx, spy);1062 transformInit = false;1063 }1064 1065 computedZoom = endZoom * e.gesture.scale;1066 1067 setPosition();1068 adjustPosition();1069 handleZoom();1070 }1071 1072 function onDrag(e)1073 {1074 if(dragInit)1075 {1076 startDragX = e.gesture.center.clientX;1077 startDragY = e.gesture.center.clientY;1078 oldX = curX;1079 oldY = curY;1080 dragInit = false;1081 }1082 curX = oldX + e.gesture.center.clientX - startDragX;1083 curY = oldY + e.gesture.center.clientY - startDragY;1084 1085 //console.log("cx: " + curX + " cy: " + curY);1086 //console.log(e);1087 setMove();1088 }1089 1090 function adjustPosition()1091 {1092 var computedWidth = _newImageWidth * computedZoom;1093 computedHeight = _newImageHeight * computedZoom;1094 1095 var oY = curY;1096 if(computedWidth <= _imageHolderWidth)1097 {1098 curX = ((_imageHolderWidth - computedWidth) * _vars.initXPercent) - realLeft;1099 }1100 else if(curX + realLeft > 0 || curX + computedWidth + realLeft < _imageHolderWidth)1101 {1102 if(curX + realLeft > 0)1103 {1104 curX = -realLeft;1105 }1106 else if(curX + computedWidth + realLeft < _imageHolderWidth)1107 {1108 curX = _imageHolderWidth - computedWidth - realLeft;1109 }1110 }1111 1112 if(computedHeight <= _imageHolderHeight)1113 {1114 curY = ((_imageHolderHeight - computedHeight) * _vars.initYPercent) - realTop;1115 }1116 else if(curY + realTop > 0 || curY + computedHeight + realTop < _imageHolderHeight)1117 {1118 if(curY + realTop > 0)1119 {1120 curY = -realTop;1121 }1122 else if(curY + computedHeight + realTop < _imageHolderHeight)1123 {1124 curY = _imageHolderHeight - computedHeight - realTop;1125 }1126 }1127 1128 curX = curX >> 0;1129 curY = curY >> 0;1130 1131 //_vars.scrollTarget.scrollLeft(_vars.scrollTarget.scrollLeft() + (appendScrollX));1132 /*1133 if(curY != oY)1134 {1135 var minus = Math.abs(oY - curY);1136 //_vars.scrollTarget.scrollTop(_vars.scrollTarget.scrollTop() + (appendScrollY + minus));1137 }1138 */1139 }1140 1141 function setPosition()1142 {1143 if(computedZoom > _vars.maxZoom)1144 {1145 computedZoom = _vars.maxZoom;1146 }1147 else if(computedZoom < _vars.minZoom)1148 {1149 computedZoom = _vars.minZoom;1150 }1151 1152 newScalePosObj.spx = parScalePosObj.spx;1153 newScalePosObj.spy = parScalePosObj.spy;1154 1155 newScalePosObj.nspx = (newScalePosObj.spx * computedZoom);1156 newScalePosObj.nspy = (newScalePosObj.spy * computedZoom);1157 1158 newScalePosObj.cx = (newScalePosObj.spx - newScalePosObj.nspx) >> 0;1159 newScalePosObj.cy = (newScalePosObj.spy - newScalePosObj.nspy) >> 0;1160 1161 curX = oldScalePosObj.cx + newScalePosObj.cx - parScalePosObj.cx;1162 curY = oldScalePosObj.cy + newScalePosObj.cy - parScalePosObj.cy;1163 }1164 1165 function resetTransform()1166 {1167 endZoom = 1;1168 computedZoom = 1;1169 1170 curX = 0;1171 curY = 0;1172 1173 oldScalePosObj = {spx:0, spy:0, nspx:0, nspy:0, cx:0, cy:0};1174 parScalePosObj = {spx:0, spy:0, nspx:0, nspy:0, cx:0, cy:0};1175 newScalePosObj = {spx:0, spy:0, nspx:0, nspy:0, cx:0, cy:0};1176 1177 zoomSpx = null;1178 zoomSpy = null;1179 1180 if($.isFunction(_vars.onZoom))1181 {1182 _vars.onZoom.apply(null, _vars.onZoomParams);1183 }1184 }1185 1186 function initZoom(spx, spy)1187 {1188 zoomSpx = spx;1189 zoomSpy = spy;1190 1191 oldScalePosObj.spx = newScalePosObj.spx;1192 oldScalePosObj.spy = newScalePosObj.spy;1193 oldScalePosObj.nspx = newScalePosObj.nspx;1194 oldScalePosObj.nspy = newScalePosObj.nspy;1195 oldScalePosObj.cx = curX;1196 oldScalePosObj.cy = curY;1197 1198 parScalePosObj.spx = spx >> 0;1199 parScalePosObj.spy = spy >> 0;1200 1201 parScalePosObj.nspx = (parScalePosObj.spx * endZoom);1202 parScalePosObj.nspy = (parScalePosObj.spy * endZoom);1203 1204 parScalePosObj.cx = (parScalePosObj.spx - parScalePosObj.nspx) >> 0;1205 parScalePosObj.cy = (parScalePosObj.spy - parScalePosObj.nspy) >> 0;1206 1207 computedZoom = endZoom;1208 }1209 1210 function handleZoom(duration)1211 {1212 var cssObj = { position:"absolute", ease:_vars.ease },1213 computedWidth = _newImageWidth * computedZoom;1214 computedHeight = _newImageHeight * computedZoom;1215 1216 if(use3D)1217 {1218 cssObj.force3D = _vars.force3D;1219 }1220 1221 duration = (!isNaN(duration)) ? duration : _vars.animDuration;1222 1223 //if($.isFunction(_vars.onZoomStart))1224 //{1225 1226 // if(oldZoom == 1 && computedZoom > 1 || oldZoom > 1 && computedZoom == _vars.maxZoom)1227 // {1228 cssObj.onStart = _vars.onZoomStart;1229 cssObj.onStartParams = _vars.onZoomStartParams;1230 // oldZoom = computedZoom;1231 // }1232 //}1233 1234 //if($.isFunction(_vars.onZoomComplete))1235 //{1236 cssObj.onComplete = _vars.onZoomComplete;1237 cssObj.onCompleteParams = _vars.onZoomCompleteParams;1238 //}1239 1240 if(useSize)1241 {1242 cssObj.width = computedWidth;1243 cssObj.height = computedHeight;1244 }1245 else1246 {1247 cssObj.scale = computedZoom; 1248 }1249 1250 if(useTransform && !useSize)1251 {1252 cssObj.x = curX;1253 cssObj.y = curY;1254 }1255 else1256 {1257 cssObj.marginLeft = curX;1258 cssObj.marginTop = curY;1259 }1260 1261 TweenMax.to(_image, duration, cssObj );1262 1263 1264 if($.isFunction(_vars.onZoom))1265 {1266 _vars.onZoom.apply(null, _vars.onZoomParams);1267 }1268 }1269 1270 1271 function setMove()1272 {1273 var adjX = curX,1274 adjY = curY;1275 1276 adjustPosition();1277 1278 snap = false;1279 1280 var cssObj = { ease:_vars.ease };1281 /*1282 if(use3D)1283 {1284 cssObj.force3D = _vars.force3D;1285 }1286 1287 if(useTransform && !useSize)1288 {1289 cssObj.x = curX;1290 cssObj.y = curY;1291 }1292 else1293 {1294 cssObj.marginLeft = curX;1295 cssObj.marginTop = curY;1296 }*/1297 cssObj.x = curX;1298 cssObj.y = curY;1299 TweenMax.to(_image, _vars.animDuration, cssObj );1300 1301 /*1302 if($.isFunction(_vars.onDrag))1303 {1304 _vars.onDrag.apply(null, _vars.onDrag);1305 }1306 */1307 }1308 1309 function _zoomIn()1310 {1311 _zoom(computedZoom + _vars.zoomStep);1312 }1313 1314 function _zoomOut()1315 {1316 _zoom(computedZoom - _vars.zoomStep);1317 }1318 1319 function _zoom(value, duration)1320 {1321 if(value !== undefined && _vars.allowZoom)1322 {1323 duration = (!isNaN(duration)) ? duration : _vars.animDuration;1324 var spx = Math.abs(curX / computedZoom) + ((_imageHolderWidth * 0.5) / computedZoom),1325 spy = Math.abs(curY / computedZoom) + ((_imageHolderHeight * 0.5) / computedZoom); 1326 1327 initZoom(spx, spy);1328 computedZoom = value;1329 1330 setPosition();1331 1332 adjustPosition();1333 endZoom = computedZoom;1334 1335 handleZoom(duration);1336 }1337 1338 return computedZoom;1339 }1340 1341 function _imageX(val)1342 {1343 if(val !== undefined)1344 {1345 curX = val;1346 adjustPosition(); 1347 handleZoom();1348 }1349 return curX;1350 }1351 1352 function _imageY(val)1353 {1354 if(val !== undefined)1355 {1356 curY = val;1357 adjustPosition(); 1358 handleZoom();1359 }1360 1361 return curY;1362 }1363 1364 function getImageHolderWidth()1365 {1366 return _imageHolderWidth; 1367 }1368 1369 function getImageHolderHeight()1370 {1371 return _imageHolderHeight;1372 }1373 }1374 1375 window.PinchZoomer = PinchZoomer;1376 PinchZoomer.objs = [];1377 PinchZoomer.lastIndex = 0;1378 PinchZoomer.fullscreenDiv = $("<div style='width:100%; height:100%; top:0px; left:0px; position:absolute;' class='fullscreenDivBg'></div>");1379 PinchZoomer.initFullScreenEvent = false;1380 PinchZoomer.fullscreenAllowed = window.screenfull !== undefined && screenfull.enabled;1381 PinchZoomer.curScrollLeft = $("body").scrollLeft();1382 PinchZoomer.curScrollTop = $("body").scrollTop();1383 PinchZoomer.curBodyOverflow = $("body").css("overflow");1384 1385 PinchZoomer.remove = function(idOrIndex)1386 {1387 var pinchZoomerObj = null;1388 1389 if(!isNaN(idOrIndex))1390 {1391 pinchZoomerObj = PinchZoomer.objs[idOrIndex];1392 pinchZoomerObj.outerDiv.remove();1393 PinchZoomer.objs[i] = null;1394 PinchZoomer.objs[i] = { removed:true };1395 }1396 else1397 {1398 var len = PinchZoomer.objs.length;1399 for(var i = 0; i < len; i++)1400 {1401 if(PinchZoomer.objs[i].id == idOrIndex)1402 {1403 pinchZoomerObj = PinchZoomer.objs[i];1404 pinchZoomerObj.outerDiv.remove();1405 PinchZoomer.objs[i] = null;1406 PinchZoomer.objs[i] = { removed:true };1407 i = len;1408 }1409 }1410 }1411 }1412 1413 PinchZoomer.removeAll = function()1414 {1415 var len = PinchZoomer.objs.length;1416 for(var i = 0; i < len; i++)1417 {1418 var pinchZoomerObj = PinchZoomer.objs[i];1419 if(!pinchZoomerObj.removed)1420 {1421 pinchZoomerObj.outerDiv.remove();1422 }1423 PinchZoomer.objs[i] = null;1424 }1425 1426 PinchZoomer.objs = null;1427 PinchZoomer.objs = [];1428 }1429 1430 1431 PinchZoomer.getObj = function(idOrIndex)1432 {1433 var pinchZoomerObj = null;1434 1435 if(!isNaN(idOrIndex))1436 {1437 pinchZoomerObj = PinchZoomer.objs[idOrIndex];1438 }1439 else1440 {1441 var len = PinchZoomer.objs.length;1442 for(var i = 0; i < len; i++)1443 {1444 if(PinchZoomer.objs[i].id == idOrIndex)1445 {1446 pinchZoomerObj = PinchZoomer.objs[i];1447 i = len;1448 }1449 }1450 }1451 1452 return pinchZoomerObj;1453 }1454 1455 PinchZoomer.get = function(idOrIndex)1456 {1457 var pinchZoomerObj = PinchZoomer.getObj(idOrIndex),1458 pinchZoomer = (pinchZoomerObj != null && !pinchZoomerObj.removed) ? pinchZoomerObj.pinchZoomer : null;1459 1460 return pinchZoomer;1461 }1462 1463 PinchZoomer.init = function(imgs, _vars)1464 {1465 _vars = _vars || {};1466 1467 if (!PinchZoomer.initFullScreenEvent && PinchZoomer.fullscreenAllowed) 1468 {1469 var versionNum = Number(Utils.browser.version.split(".")[0]);1470 1471 if(Utils.browser.name == "Safari" && versionNum < 6)1472 {1473 PinchZoomer.fullscreenAllowed = false; 1474 }1475 else1476 { 1477 document.addEventListener(screenfull.raw.fullscreenchange, onFullScreenChange);1478 document.addEventListener(screenfull.raw.fullscreenerror, onFullScreenError);1479 }1480 }1481 1482 if (!PinchZoomer.initFullScreenEvent)1483 {1484 PinchZoomer.fullscreenDiv.hammer().on("drag", Utils.preventGestureDefault);1485 }1486 1487 PinchZoomer.initFullScreenEvent = true;1488 1489 var pinchZoomerImages = $(imgs || "img[data-elem='pinchzoomer']").filter("img"),1490 pinchZoomerLen = pinchZoomerImages.length;1491 1492 for(var i = 0; i < pinchZoomerLen; i++)1493 {1494 var pinchZoomerObj = {},1495 index = PinchZoomer.objs.length;1496 1497 pinchZoomerObj.removed = false;1498 pinchZoomerObj.image = pinchZoomerImages.eq(i);1499 pinchZoomerObj.originalImage = pinchZoomerImages.eq(i);1500 pinchZoomerObj.id = pinchZoomerObj.image.attr("id") || "img" + PinchZoomer.lastIndex;1501 pinchZoomerObj.vars = $.extend( { scaleMode:"widthOnly" }, (_vars.imageOptions || Utils.getAttrObjectFromString(pinchZoomerObj.image.data("options"))));1502 pinchZoomerObj.origScaleMode = pinchZoomerObj.vars.scaleMode;1503 pinchZoomerObj.controlVars = $.extend( { alwaysShow:false }, (_vars.controlOptions || Utils.getAttrObjectFromString(pinchZoomerObj.image.data("control-options"))));1504 pinchZoomerObj.vars.onImageLoad = onPinchZoomerImageLoad;1505 pinchZoomerObj.vars.onImageLoadParams = [index];1506 pinchZoomerObj.vars.onZoomStart = onImageZoom;1507 pinchZoomerObj.vars.onZoomStartParams = [index];1508 1509 pinchZoomerObj.outerDiv = $("<div class='outerDiv' style='position:relative;'></div>")1510 pinchZoomerObj.innerDiv = $("<div class='innerDiv' style='position:absolute: top:0px; left:0px; width:100%; height:100%;'></div>");1511 1512 pinchZoomerObj.outerDiv.append(pinchZoomerObj.innerDiv);1513 pinchZoomerObj.originalParent = pinchZoomerObj.image.parent();1514 pinchZoomerObj.tempDiv = $("<div></div>");1515 pinchZoomerObj.image.replaceWith(pinchZoomerObj.outerDiv);1516 1517 pinchZoomerObj.zoomInButton = $("<div></div>");1518 pinchZoomerObj.outerDiv.append(pinchZoomerObj.zoomInButton);1519 1520 pinchZoomerObj.zoomInOnObj = getStyle(_vars.zoomInOnStyle || pinchZoomerObj.image.data("zoomin-on") || "zoomInOn");1521 pinchZoomerObj.zoomInOffObj = getStyle(_vars.zoomInOffStyle || pinchZoomerObj.image.data("zoomin-off") || "zoomInOff");1522 1523 pinchZoomerObj.zoomOutButton = $("<div></div>");1524 pinchZoomerObj.outerDiv.append(pinchZoomerObj.zoomOutButton);1525 1526 pinchZoomerObj.zoomOutOnObj = getStyle(_vars.zoomOutOnStyle || pinchZoomerObj.image.data("zoomout-on") || "zoomOutOn");1527 pinchZoomerObj.zoomOutOffObj = getStyle(_vars.zoomOutOffStyle || pinchZoomerObj.image.data("zoomout-off") || "zoomOutOff");1528 1529 1530 pinchZoomerObj.zoomInButton.hammer().on("tap", {index:index}, onZoomIn);1531 pinchZoomerObj.zoomOutButton.hammer().on("tap", {index:index}, onZoomOut);1532 1533 pinchZoomerObj.fullscreenButton = $("<div></div>");1534 if(PinchZoomer.fullscreenAllowed)1535 {1536 pinchZoomerObj.outerDiv.append(pinchZoomerObj.fullscreenButton);1537 }1538 pinchZoomerObj.fullscreenObj = getStyle(_vars.fullscreenStyle || pinchZoomerObj.image.data("fullscreen") || "fullscreen");1539 pinchZoomerObj.fullscreenButton.on("click", {index:index}, onFullscreenToggle);1540 1541 pinchZoomerObj.controlVisible = false;1542 pinchZoomerObj.oldZoomInEnabled = true;1543 pinchZoomerObj.oldZoomOutEnabled = false;1544 1545 pinchZoomerObj.image.remove();1546 1547 pinchZoomerObj.outerDiv.hammer().on("tap", {index:index}, onInput);1548 pinchZoomerObj.outerDiv.on("mouseover", {index:index}, onInput);1549 pinchZoomerObj.outerDiv.on("mouseout", {index:-1}, onInput);1550 1551 var imgSrc = pinchZoomerObj.image.attr("src"), 1552 src = (imgSrc != "#") ? imgSrc : pinchZoomerObj.image.data("src");1553 1554 1555 pinchZoomerObj.pinchZoomer = new PinchZoomer(pinchZoomerObj.innerDiv, src, pinchZoomerObj.vars );1556 1557 PinchZoomer.objs.push(pinchZoomerObj);1558 setZoomButtonState(index, true);1559 PinchZoomer.lastIndex ++;1560 }1561 1562 1563 1564 setActiveControls(-1);1565 $(window).resize(resizeAll);1566 1567 function getStyle(value)1568 {1569 var style = {};1570 1571 if(value.indexOf(":") == -1)1572 {1573 style = { className:value };1574 1575 }1576 else1577 {1578 style = Utils.getAttrObjectFromString(value);1579 }1580 1581 return style;1582 }1583 1584 function resizeAll()1585 {1586 for(var i = 0; i < PinchZoomer.objs.length; i++)1587 {1588 var pinchZoomerObj = PinchZoomer.objs[i],1589 scaleMode = pinchZoomerObj.vars.scaleMode;1590 1591 if(scaleMode != "none" && PinchZoomer.objs[i].outerDiv.is(":visible"))1592 {1593 resizeOuterDiv(i);1594 }1595 }1596 }1597 1598 function onPinchZoomerImageLoad(index)1599 {1600 resizeOuterDiv(index);1601 setActiveControls(-1);1602 }1603 1604 function resizeOuterDiv(index)1605 {1606 var pinchZoomerObj = PinchZoomer.objs[index];1607 1608 if(!pinchZoomerObj.removed) 1609 { 1610 var pinchZoomer = PinchZoomer.objs[index].pinchZoomer;1611 1612 if(pinchZoomer.imageLoaded())1613 {1614 var scaleMode = pinchZoomerObj.vars.scaleMode,1615 imageWidth = pinchZoomer.imageWidth(),1616 imageHeight = pinchZoomer.imageHeight(),1617 holderWidth = pinchZoomerObj.outerDiv.parent().width(),1618 holderHeight = pinchZoomerObj.outerDiv.parent().height(),1619 widthScale = holderWidth / imageWidth,1620 heightScale = holderHeight / imageHeight,1621 newOuterWidth = imageWidth * heightScale,1622 newOuterHeight = imageHeight * widthScale;1623 1624 if(scaleMode.indexOf("full") != -1)1625 {1626 newOuterWidth = "100%";1627 newOuterHeight = "100%";1628 }1629 else1630 {1631 if(scaleMode == "widthOnly")1632 {1633 newOuterWidth = holderWidth;1634 newOuterHeight = (holderWidth / imageWidth) * imageHeight;1635 }1636 else if(scaleMode == "heightOnly")1637 {1638 newOuterHeight = holderHeight;1639 newOuterWidth = (holderHeight / imageHeight) * imageWidth;1640 }1641 else if(scaleMode == "proportionalInside")1642 {1643 if(newOuterHeight <= holderHeight)1644 {1645 newOuterWidth = holderWidth;1646 }1647 else1648 {1649 newOuterHeight = holderHeight;1650 }1651 }1652 else if(scaleMode == "proportionalOutside")1653 {1654 if(newOuterHeight >= holderHeight)1655 {1656 newOuterWidth = holderWidth;1657 scale = holderWidth / newOuterWidth;1658 }1659 else1660 {1661 newOuterHeight = holderHeight;1662 scale = holderHeight / newOuterHeight;1663 }1664 }1665 else1666 {1667 newOuterWidth = imageWidth;1668 newOuterHeight = imageHeight;1669 }1670 1671 newOuterWidth = Math.ceil(newOuterWidth);1672 newOuterHeight = Math.ceil(newOuterHeight);1673 }1674 1675 TweenMax.set(pinchZoomerObj.outerDiv, {width:newOuterWidth, height:newOuterHeight });1676 pinchZoomer.resize();1677 }1678 }1679 }1680 1681 function onInput(e)1682 {1683 var index = e.data.index;1684 setActiveControls(index);1685 }1686 1687 function onFullScreenChange()1688 {1689 if(!screenfull.isFullscreen)1690 {1691 PinchZoomer.fullscreenDiv.detach();1692 1693 var pinchZoomerObj = PinchZoomer.objs[PinchZoomer.fullscreenIndex];1694 if(!pinchZoomerObj.removed)1695 {1696 if(PinchZoomer.fullscreenDiv.find(pinchZoomerObj.outerDiv).length == 1)1697 { 1698 pinchZoomerObj.vars.scaleMode = pinchZoomerObj.origScaleMode;1699 pinchZoomerObj.tempDiv.after(pinchZoomerObj.outerDiv);1700 pinchZoomerObj.tempDiv.detach();1701 1702 if(!PinchZoomer.fullscreenAllowed)1703 {1704 returnScroll();1705 }1706 1707 $(window).trigger("resize");1708 }1709 }1710 }1711 }1712 1713 function onFullScreenError()1714 {1715 //console.log("fullscreen error");1716 }1717 1718 function onFullscreenToggle(e)1719 {1720 var index = e.data.index,1721 pinchZoomerObj = PinchZoomer.objs[index],1722 isFullscreen = false;1723 1724 if(PinchZoomer.fullscreenAllowed)1725 {1726 isFullscreen = screenfull.isFullscreen;1727 }1728 else1729 {1730 isFullscreen = (PinchZoomer.fullscreenDiv.parent().length > 0);1731 }1732 1733 if(!isFullscreen)1734 {1735 pinchZoomerObj.vars.scaleMode = "full";1736 PinchZoomer.fullscreenIndex = index;1737 $("body").append(PinchZoomer.fullscreenDiv);1738 pinchZoomerObj.outerDiv.after(pinchZoomerObj.tempDiv);1739 PinchZoomer.fullscreenDiv.append(pinchZoomerObj.outerDiv);1740 1741 if(PinchZoomer.fullscreenAllowed)1742 {1743 screenfull.request(PinchZoomer.fullscreenDiv.get(0));1744 }1745 else1746 {1747 resetScroll();1748 }1749 triggerResize();1750 }1751 else1752 {1753 if(PinchZoomer.fullscreenAllowed)1754 {1755 screenfull.exit();1756 }1757 else1758 {1759 onFullScreenChange();1760 }1761 }1762 }1763 1764 function returnScroll()1765 {1766 window.scrollTo(PinchZoomer.curScrollLeft, PinchZoomer.curScrollTop); 1767 TweenMax.set($("body"), {overflow:PinchZoomer.curBodyOverflow});1768 }1769 1770 function resetScroll()1771 {1772 PinchZoomer.curScrollLeft = $("body").scrollLeft();1773 PinchZoomer.curScrollTop = $("body").scrollTop();1774 1775 if(PinchZoomer.curScrollLeft != 0 || PinchZoomer.curScrollTop != 0)1776 { 1777 window.scrollTo(0, 0);1778 }1779 1780 PinchZoomer.curBodyOverflow = $("body").css("overflow");1781 TweenMax.set($("body"), {overflow:"hidden"});1782 }1783 1784 function triggerResize()1785 {1786 $(window).trigger("resize");1787 }1788 1789 function onZoomIn(e)1790 {1791 1792 var index = e.data.index,1793 pinchZoomerObj = PinchZoomer.objs[index];1794 1795 if(!pinchZoomerObj.removed)1796 {1797 pinchZoomerObj.pinchZoomer.zoomIn();1798 setActiveControls(index);1799 }1800 }1801 1802 function onZoomOut(e)1803 {1804 var index = e.data.index,1805 pinchZoomerObj = PinchZoomer.objs[index];1806 1807 if(!pinchZoomerObj.removed)1808 {1809 pinchZoomerObj.pinchZoomer.zoomOut();1810 setActiveControls(index);1811 }1812 }1813 1814 function onImageZoom(index)1815 {1816 setActiveControls(index);1817 }1818 1819 function setZoomButtonState(index, forceCss)1820 {1821 forceCss = (forceCss === true);1822 1823 if(index >= 0 && index < PinchZoomer.objs.length)1824 {1825 var pinchZoomerObj = PinchZoomer.objs[index];1826 1827 if(!pinchZoomerObj.removed)1828 {1829 var pinchZoomer = pinchZoomerObj.pinchZoomer,1830 curZoom = pinchZoomer.zoom();1831 1832 if(curZoom == pinchZoomer.vars.minZoom)1833 {1834 if(pinchZoomerObj.oldZoomOutEnabled || forceCss)1835 {1836 TweenMax.set(pinchZoomerObj.zoomOutButton, pinchZoomerObj.zoomOutOffObj);1837 }1838 1839 pinchZoomerObj.oldZoomOutEnabled = false;1840 }1841 else1842 {1843 if(!pinchZoomerObj.oldZoomOutEnabled || forceCss)1844 {1845 TweenMax.set(pinchZoomerObj.zoomOutButton, pinchZoomerObj.zoomOutOnObj);1846 }1847 1848 pinchZoomerObj.oldZoomOutEnabled = true;1849 }1850 1851 if(curZoom == pinchZoomer.vars.maxZoom)1852 {1853 if(pinchZoomerObj.oldZoomInEnabled || forceCss)1854 {1855 TweenMax.set(pinchZoomerObj.zoomInButton, pinchZoomerObj.zoomInOffObj);1856 }1857 1858 pinchZoomerObj.oldZoomInEnabled = false;1859 }1860 else1861 {1862 if(!pinchZoomerObj.oldZoomInEnabled || forceCss)1863 {1864 TweenMax.set(pinchZoomerObj.zoomInButton, pinchZoomerObj.zoomInOnObj);1865 }1866 1867 pinchZoomerObj.oldZoomInEnabled = true;1868 }1869 1870 //TweenMax.set(pinchZoomerObj.fullscreenButton, pinchZoomerObj.fullscreenObj);1871 }1872 }1873 } 1874 1875 function setActiveControls(index)1876 {1877 for(var i = 0; i < PinchZoomer.objs.length; i++)1878 {1879 var pinchZoomerObj = PinchZoomer.objs[i];1880 if(!pinchZoomerObj.removed)1881 {1882 if(i == index)1883 {1884 if(!pinchZoomerObj.controlVisible)1885 {1886 if(!pinchZoomerObj.controlVars.alwaysShow)1887 {1888 TweenMax.set([pinchZoomerObj.zoomInButton, pinchZoomerObj.zoomOutButton, pinchZoomerObj.fullscreenButton], { visibility:"visible" });1889 }1890 }1891 1892 pinchZoomerObj.controlVisible = true;1893 1894 setZoomButtonState(i);1895 }1896 else1897 {1898 if(pinchZoomerObj.controlVisible || index == -1)1899 {1900 if(!pinchZoomerObj.controlVars.alwaysShow)1901 {1902 TweenMax.set([pinchZoomerObj.zoomInButton, pinchZoomerObj.zoomOutButton, pinchZoomerObj.fullscreenButton], { visibility:"hidden" });1903 }1904 }1905 1906 pinchZoomerObj.controlVisible = false;1907 }1908 }1909 }1910 }1911 }1912 1913}(window, jQuery));1914(function ($) 1915{1916 $.fn.pinchzoomer = function(_vars) 1917 {1918 PinchZoomer.init(this, _vars);1919 };1920 1921}(jQuery));1922(function($)1923{1924 function onReady()1925 {1926 PinchZoomer.init();1927 }1928 1929 $(onReady);1930 ...
touch-input.js
Source:touch-input.js
1var TouchInput = pc.createScript('touchInput');2TouchInput.MASK_VALUE = 2;3TouchInput.attributes.add('orbitSensitivity', {4 type: 'number',5 default: 0.4,6 title: 'Orbit Sensitivity',7 description: 'How fast the camera moves around the orbit. Higher is faster'8});9TouchInput.attributes.add('distanceSensitivity', {10 type: 'number',11 default: 0.2,12 title: 'Distance Sensitivity',13 description: 'How fast the camera moves in and out. Higher is faster'14});15TouchInput.attributes.add('panEnabled', {16 type: 'boolean',17 default: true,18 title: 'Panning Allowed',19 description: 'Is panning allowed via 2-touches and drag?'20});21TouchInput.attributes.add('yawOrientedPan', {22 type: 'boolean',23 enum: [24 { 'None': false },25 { '(x,z) Top': true },26 ],27 title: "Pan Plane 2D",28 description: "Pan along camera yaw oriented 2D plane?",29 default: false30});31TouchInput.attributes.add('reverseControlScheme', {32 type: 'boolean',33 default: false,34 title: 'Reverse Control Scheme'35});36TouchInput.attributes.add('domId', {37 type: 'string'38});39TouchInput.hackedTouch = false;40// initialize code called once per entity41TouchInput.prototype.initialize = function() {42 this.orbitCamera = this.entity.script.orbitCamera;43 this.fromWorldPoint = new pc.Vec3();44 this.toWorldPoint = new pc.Vec3();45 this.worldDiff = new pc.Vec3();46 this.calcMatrix = new pc.Mat4();47 this.dualTouched = false;48 // Store the position of the touch so we can calculate the distance moved49 this.lastTouchPoint = new pc.Vec2();50 this.lastPinchMidPoint = new pc.Vec2();51 this.lastPinchDistanceX = 0;52 this.lastPinchDistanceY = 0;53 this.lastPinchDistance = 0;54 //this.lastAxial = new pc.Vec2();55 //this.curAxial = new pc.Vec2();56 this.lastRotation = 0;57 this.touchDevice = this.app.touch;58 this.originalDistanceSensitivity = this.distanceSensitivity;59 // NOTE: this is a hack, assume fullscreen yea...so it's simplified60 if (!TouchInput.hackTouched) {61 pc.getTouchTargetCoords = function (touch) {62 return {63 x: touch.pageX,64 y: touch.pageY65 };66 };67 TouchInput.hackTouched = true;68 }69};70TouchInput.prototype.postInitialize = function() {71 if (this.orbitCamera && this.app.touch) {72 if (this.domId) {73 var elem = document.getElementById(this.domId);74 if (elem) {75 this.touchDevice = new pc.TouchDevice(elem);76 console.log("Switching to element id for touch:"+this.domId);77 }78 else {79 console.warn("could not find document by element id:"+this.domId);80 }81 }82 // Use the same callback for the touchStart, touchEnd and touchCancel events as they83 // all do the same thing which is to deal the possible multiple touches to the screen84 this.initListeners();85 this.on("enable", function() {86 this.initListeners();87 }, this);88 this.on("disable", function() {89 this.disableListeners();90 }, this);91 this.on('destroy', function() {92 this.disableListeners();93 }, this);94 }95};96TouchInput.prototype.initListeners = function() {97 this.touchDevice.on(pc.EVENT_TOUCHSTART, this.onTouchStartEndCancel, this);98 this.touchDevice.on(pc.EVENT_TOUCHEND, this.onTouchStartEndCancel, this);99 this.touchDevice.on(pc.EVENT_TOUCHCANCEL, this.onTouchStartEndCancel, this);100 this.touchDevice.on(pc.EVENT_TOUCHMOVE, this.onTouchMove, this);101};102TouchInput.prototype.disableListeners = function() {103 this.touchDevice.off(pc.EVENT_TOUCHSTART, this.onTouchStartEndCancel, this);104 this.touchDevice.off(pc.EVENT_TOUCHEND, this.onTouchStartEndCancel, this);105 this.touchDevice.off(pc.EVENT_TOUCHCANCEL, this.onTouchStartEndCancel, this);106 this.touchDevice.off(pc.EVENT_TOUCHMOVE, this.onTouchMove, this);107};108TouchInput.prototype.getPinchDistance = function (pointA, pointB) {109 // Return the distance between the two points110 var dx = pointA.x - pointB.x;111 var dy = pointA.y - pointB.y;112 return Math.sqrt((dx * dx) + (dy * dy));113};114TouchInput.prototype.getPinchDistanceX = function (pointA, pointB) {115 // Return the distance between the two points116 return Math.abs(pointA.x - pointB.x);117};118TouchInput.prototype.getPinchDistanceY = function (pointA, pointB) {119 // Return the distance between the two points120 return Math.abs(pointB.y - pointA.y);121};122TouchInput.prototype.calcMidPoint = function (pointA, pointB, result) {123 result.set(pointB.x - pointA.x, pointB.y - pointA.y);124 result.scale(0.5);125 result.x += pointA.x;126 result.y += pointA.y;127};128TouchInput.prototype.onTouchStartEndCancel = function(event) {129 // We only care about the first touch for camera rotation. As the user touches the screen,130 // we stored the current touch position131 var touches = event.touches;132 var wasDualTouched = this.dualTouched;133 this.dualTouched = false;134 if (touches.length === 1) {135 this.lastTouchPoint.set(touches[0].x, touches[0].y);136 this.lastPinchMidPoint.set(touches[0].x, touches[0].y);137 } else if (touches.length === 2) {138 this.dualTouched = true;139 wasDualTouched = true;140 // If there are 2 touches on the screen, then set the pinch distance141 /*142 this.lastPinchDistanceX = this.getPinchDistanceX(touches[0], touches[1]);143 this.lastPinchDistanceY = this.getPinchDistanceY(touches[0], touches[1]);144 this.lastPinchDistance = Math.sqrt(this.lastPinchDistanceX*this.lastPinchDistanceX + this.lastPinchDistanceY*this.lastPinchDistanceY);145 */146 this.lastPinchDistance = this.getPinchDistance(touches[0], touches[1]);147 this.calcMidPoint(touches[0], touches[1], this.lastPinchMidPoint);148 this.lastTouchPoint.set(touches[0].x, touches[0].y);149 // this.lastAxial.x = touches[0].x - this.lastPinchMidPoint.x;150 // this.lastAxial.y = touches[0].y - this.lastPinchMidPoint.y;151 // this.lastAxial.normalize();152 this.lastRotation = Math.atan2(touches[0].y - this.lastPinchMidPoint.y, touches[0].x - this.lastPinchMidPoint.x);153 }154 if (event.event.type === pc.EVENT_TOUCHSTART ) {155 this.orbitCamera.inputDetectMask |= TouchInput.MASK_VALUE;156 if (wasDualTouched) {157 this.orbitCamera.fire("panRelease");158 }159 }160 else {161 this.orbitCamera.inputDetectMask &= ~TouchInput.MASK_VALUE;162 if (wasDualTouched) {163 this.orbitCamera.fire("panRelease");164 }165 }166};167TouchInput.prototype.pan = function(midPoint) {168 var fromWorldPoint = this.fromWorldPoint;169 var toWorldPoint = this.toWorldPoint;170 var worldDiff = this.worldDiff;171 // For panning to work at any zoom level, we use screen point to world projection172 // to work out how far we need to pan the pivotEntity in world space173 var camera = this.entity.camera;174 var distance = this.orbitCamera.distance;175 if (!this.yawOrientedPan) {176 camera.screenToWorld(midPoint.x, midPoint.y, distance, fromWorldPoint);177 camera.screenToWorld(this.lastPinchMidPoint.x, this.lastPinchMidPoint.y, distance, toWorldPoint);178 worldDiff.sub2(toWorldPoint, fromWorldPoint);179 }180 else {181 if (this.entity.camera.myFakeOrtho) this.entity.camera.data.camera._projection = pc.PROJECTION_ORTHOGRAPHIC;182 camera.screenToWorld(midPoint.x, midPoint.y, distance, fromWorldPoint);183 camera.screenToWorld(this.lastPinchMidPoint.x, this.lastPinchMidPoint.y, distance, toWorldPoint);184 worldDiff.sub2(toWorldPoint, fromWorldPoint);185 if (this.entity.camera.myFakeOrtho) this.entity.camera.data.camera._projection = pc.PROJECTION_PERSPECTIVE;186 ///*187 if (!this.entity.camera.myFakeOrtho && this.entity.camera.projection === pc.PROJECTION_PERSPECTIVE) {188 var scale = worldDiff.length();189 var dx = this.lastPinchMidPoint.x - midPoint.x;190 var dy = this.lastPinchMidPoint.y - midPoint.y;191 var d = dx*dx+dy*dy;192 if (d === 0 ) return;193 d = Math.sqrt(d);194 d = 1/d;195 dx *=d;196 dy *=d;197 dx *= scale;198 dy *= scale;199 worldDiff.x = dx;200 worldDiff.y = 0;201 worldDiff.z = dy;202 this.calcMatrix.setFromEulerAngles(0, this.orbitCamera._targetYaw, 0);203 this.calcMatrix.transformVector(worldDiff, worldDiff);204 }205 }206 this.orbitCamera.panByAmount(worldDiff);207};208TouchInput.pinchMidPoint = new pc.Vec2();209TouchInput.prototype.onTouchMove = function(event) {210 var pinchMidPoint = TouchInput.pinchMidPoint;211 // We only care about the first touch for camera rotation. Work out the difference moved since the last event212 // and use that to update the camera target position213 var touches = event.touches;214 this.dualTouched = false;215 if ( touches.length === 1 ) {216 var touch = touches[0];217 if (!this.reverseControlScheme) {218 this.orbitCamera.pitch -= (touch.y - this.lastTouchPoint.y) * this.orbitSensitivity;219 this.orbitCamera.yaw -= (touch.x - this.lastTouchPoint.x) * this.orbitSensitivity;220 }221 else {222 pinchMidPoint.x = touch.x;223 pinchMidPoint.y = touch.y;224 this.pan(pinchMidPoint);225 }226 this.lastPinchMidPoint.set(touch.x, touch.y);227 this.lastTouchPoint.set(touch.x, touch.y);228 } else if ( touches.length === 2 ) {229 this.dualTouched = true;230 // Calculate the difference in pinch distance since the last event231 //var currentPinchDistanceX = this.getPinchDistanceX(touches[0], touches[1]);232 //var currentPinchDistanceY = this.getPinchDistanceY(touches[0], touches[1]);233 var currentPinchDistance = this.getPinchDistance(touches[0], touches[1]);//Math.sqrt(currentPinchDistanceX*currentPinchDistanceX + currentPinchDistanceY*currentPinchDistanceY);234 //var diffInPinchDistanceX = currentPinchDistanceX - this.lastPinchDistanceX;235 //var diffInPinchDistanceY = currentPinchDistanceY - this.lastPinchDistanceY;236 var diffInPinchDistance = currentPinchDistance - this.lastPinchDistance;237 // this.lastPinchDistanceX = currentPinchDistanceX;238 // this.lastPinchDistanceY = currentPinchDistanceY;239 this.lastPinchDistance = currentPinchDistance;240 if (!this.entity.camera.myFakeOrtho && this.entity.camera.projection === pc.PROJECTION_PERSPECTIVE) {241 if (!this.orbitCamera.fovZooming) {242 this.orbitCamera.distance -= (diffInPinchDistance * this.distanceSensitivity * 0.1) * (this.orbitCamera.distance * 0.1);243 }244 else {245 var curFOV = this.entity.camera.fov;246 var fov;247 fov = curFOV - diffInPinchDistance * this.distanceSensitivity * 0.1;248 if (fov < this.orbitCamera.minFOV) fov = this.orbitCamera.minFOV;249 if (fov > this.orbitCamera.maxFOV) fov = this.orbitCamera.maxFOV;250 this.entity.camera.fov = fov;251 if (this.entity.originalCameraFOV) {252 var fovVal = this.entity.camera.fov * pc.math.DEG_TO_RAD * 0.5;253 var fovVal2 = this.entity.originalCameraFOV * pc.math.DEG_TO_RAD * 0.5;254 //r focalLength = 1 / Math.tan(fovVal);255 var relativeRatio = Math.tan(fovVal) / Math.tan(fovVal2);256 this.distanceSensitivity = this.originalDistanceSensitivity * relativeRatio;257 }258 }259 }260 else if (this.orbitCamera.allowOrthoZoom) {261 this.orbitCamera.orthoDistance -= (diffInPinchDistance * this.distanceSensitivity * 0.1) * (this.orbitCamera.orthoDistance * 0.1);262 this.orbitCamera.fire("orthoHeightChange");263 }264 // Calculate pan difference265 this.calcMidPoint(touches[0], touches[1], pinchMidPoint);266 if (!this.reverseControlScheme) {267 if (this.panEnabled) {268 this.pan(pinchMidPoint);269 }270 }271 else {272 this.orbitCamera.pitch -= (pinchMidPoint.y - this.lastPinchMidPoint.y) * this.orbitSensitivity;273 // todo: this rotate yaw needs to be tested.274 // this.curAxial.x = touches[0].x - this.pinchMidPoint.x;275 // this.curAxial.y = touches[0].y - this.pinchMidPoint.y;276 //this.curAxial.normalize();277 var curRotation = Math.atan2(touches[0].y - pinchMidPoint.y, touches[0].x - pinchMidPoint.x);278 this.orbitCamera.yaw += (curRotation - this.lastRotation) * pc.math.RAD_TO_DEG;279 //Math.acos(this.curAxial.x*this.lastAxial.x + this.curAxial.y*this.lastAxial.y) * pc.math.RAD_TO_DEG;280 //(pinchMidPoint.x - this.lastPinchMidPoint.x) * this.orbitSensitivity;281 this.lastRotation = curRotation;282 }283 //this.lastAxial.x = touches[0].x - this.lastPinchMidPoint.x;284 // this.lastAxial.y = touches[0].y - this.lastPinchMidPoint.y;285 this.lastPinchMidPoint.copy(pinchMidPoint);286 }287};...
PinchRecognizer.js
Source:PinchRecognizer.js
1/*2 * Copyright 2003-2006, 2009, 2017, United States Government, as represented by the Administrator of the3 * National Aeronautics and Space Administration. All rights reserved.4 *5 * The NASAWorldWind/WebWorldWind platform is licensed under the Apache License, Version 2.0 (the "License");6 * you may not use this file except in compliance with the License.7 * You may obtain a copy of the License at8 *9 * http://www.apache.org/licenses/LICENSE-2.010 *11 * Unless required by applicable law or agreed to in writing, software12 * distributed under the License is distributed on an "AS IS" BASIS,13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.14 * See the License for the specific language governing permissions and15 * limitations under the License.16 */17/**18 * @exports PinchRecognizer19 */20define(['../gesture/GestureRecognizer'],21 function (GestureRecognizer) {22 "use strict";23 /**24 * Constructs a pinch gesture recognizer.25 * @alias PinchRecognizer26 * @constructor27 * @augments GestureRecognizer28 * @classdesc A concrete gesture recognizer subclass that looks for two finger pinch gestures.29 * @param {EventTarget} target The document element this gesture recognizer observes for mouse and touch events.30 * @param {Function} callback An optional function to call when this gesture is recognized. If non-null, the31 * function is called when this gesture is recognized, and is passed a single argument: this gesture recognizer,32 * e.g., <code>gestureCallback(recognizer)</code>.33 * @throws {ArgumentError} If the specified target is null or undefined.34 */35 var PinchRecognizer = function (target, callback) {36 GestureRecognizer.call(this, target, callback);37 // Intentionally not documented.38 this._scale = 1;39 // Intentionally not documented.40 this._offsetScale = 1;41 // Intentionally not documented.42 this.referenceDistance = 0;43 // Intentionally not documented.44 this.interpretThreshold = 20;45 // Intentionally not documented.46 this.weight = 0.4;47 // Intentionally not documented.48 this.pinchTouches = [];49 };50 PinchRecognizer.prototype = Object.create(GestureRecognizer.prototype);51 Object.defineProperties(PinchRecognizer.prototype, {52 scale: {53 get: function () {54 return this._scale * this._offsetScale;55 }56 }57 });58 // Documented in superclass.59 PinchRecognizer.prototype.reset = function () {60 GestureRecognizer.prototype.reset.call(this);61 this._scale = 1;62 this._offsetScale = 1;63 this.referenceDistance = 0;64 this.pinchTouches = [];65 };66 // Documented in superclass.67 PinchRecognizer.prototype.mouseDown = function (event) {68 if (this.state == WorldWind.POSSIBLE) {69 this.state = WorldWind.FAILED; // touch gestures fail upon receiving a mouse event70 }71 };72 // Documented in superclass.73 PinchRecognizer.prototype.touchStart = function (touch) {74 if (this.pinchTouches.length < 2) {75 if (this.pinchTouches.push(touch) == 2) {76 this.referenceDistance = this.currentPinchDistance();77 this._offsetScale *= this._scale;78 this._scale = 1;79 }80 }81 };82 // Documented in superclass.83 PinchRecognizer.prototype.touchMove = function (touch) {84 if (this.pinchTouches.length == 2) {85 if (this.state == WorldWind.POSSIBLE) {86 if (this.shouldRecognize()) {87 this.state = WorldWind.BEGAN;88 }89 } else if (this.state == WorldWind.BEGAN || this.state == WorldWind.CHANGED) {90 var distance = this.currentPinchDistance(),91 newScale = Math.abs(distance / this.referenceDistance),92 w = this.weight;93 this._scale = this._scale * (1 - w) + newScale * w;94 this.state = WorldWind.CHANGED;95 }96 }97 };98 // Documented in superclass.99 PinchRecognizer.prototype.touchEnd = function (touch) {100 var index = this.pinchTouches.indexOf(touch);101 if (index != -1) {102 this.pinchTouches.splice(index, 1);103 }104 // Transition to the ended state if this was the last touch.105 if (this.touchCount == 0) { // last touch ended106 if (this.state == WorldWind.POSSIBLE) {107 this.state = WorldWind.FAILED;108 } else if (this.state == WorldWind.BEGAN || this.state == WorldWind.CHANGED) {109 this.state = WorldWind.ENDED;110 }111 }112 };113 // Documented in superclass.114 PinchRecognizer.prototype.touchCancel = function (touch) {115 var index = this.pinchTouches.indexOf(touch);116 if (index != -1) {117 this.pinchTouches.splice(index, 1);118 }119 // Transition to the cancelled state if this was the last touch.120 if (this.touchCount == 0) {121 if (this.state == WorldWind.POSSIBLE) {122 this.state = WorldWind.FAILED;123 } else if (this.state == WorldWind.BEGAN || this.state == WorldWind.CHANGED) {124 this.state = WorldWind.CANCELLED;125 }126 }127 };128 // Documented in superclass.129 PinchRecognizer.prototype.prepareToRecognize = function () {130 this.referenceDistance = this.currentPinchDistance();131 this._scale = 1;132 };133 // Intentionally not documented.134 PinchRecognizer.prototype.shouldRecognize = function () {135 var distance = this.currentPinchDistance();136 return Math.abs(distance - this.referenceDistance) > this.interpretThreshold137 };138 // Intentionally not documented.139 PinchRecognizer.prototype.currentPinchDistance = function () {140 var touch0 = this.pinchTouches[0],141 touch1 = this.pinchTouches[1],142 dx = touch0.clientX - touch1.clientX,143 dy = touch0.clientY - touch1.clientY;144 return Math.sqrt(dx * dx + dy * dy);145 };146 return PinchRecognizer;...
pinchers.js
Source:pinchers.js
1export default {2 models: 'hands',3 enabled: true,4 tags: ['core'],5 // Index of fingertips6 fingertipIndex: [8, 12, 16, 20],7 // Number of frames the current element is the same as the last8 // [left, right]9 // [index, middle, ring, pinky]10 numFramesFocused: [[0, 0, 0, 0,], [0, 0, 0, 0]],11 // Whether the fingers are touching12 thresholdMet: [[0, 0, 0, 0,], [0, 0, 0, 0]],13 framesSinceLastGrab: [[0, 0, 0, 0,], [0, 0, 0, 0]],14 // The original grab point for each finger15 origPinch: [16 [{x: 0, y: 0}, {x: 0, y: 0}, {x: 0, y: 0}, {x: 0, y: 0}],17 [{x: 0, y: 0}, {x: 0, y: 0}, {x: 0, y: 0}, {x: 0, y: 0}]18 ],19 curPinch: [20 [{x: 0, y: 0}, {x: 0, y: 0}, {x: 0, y: 0}, {x: 0, y: 0}],21 [{x: 0, y: 0}, {x: 0, y: 0}, {x: 0, y: 0}, {x: 0, y: 0}]22 ],23 // Just downel24 pinchDowned: [25 [0, 0, 0, 0],26 [0, 0, 0, 0]27 ],28 pinchDown: [29 [false, false, false, false],30 [false, false, false, false]31 ],32 pinchUp: [33 [false, false, false, false],34 [false, false, false, false]35 ],36 // The tweened scrollTop, used to smoothen out scroll37 // [[leftHand], [rightHand]]38 tween: [39 [{x: 0, y: 0}, {x: 0, y: 0}, {x: 0, y: 0}, {x: 0, y: 0}],40 [{x: 0, y: 0}, {x: 0, y: 0}, {x: 0, y: 0}, {x: 0, y: 0}]41 ],42 // Number of frames that has passed since the last grab43 numFramesFocused: [[0, 0, 0, 0,], [0, 0, 0, 0]],44 // Number of frames mouse has been downed45 mouseDowned: 0,46 // Is the mouse up?47 mouseUp: false,48 // Whether one of the morph confidences have been met49 mouseThresholdMet: false,50 config: {51 // Number of frames over the same element before activating that element52 framesToFocus: 10,53 // Number of pixels the middle and thumb tips must be near each other to drag54 threshold: 50,55 // Number of frames where a hold is not registered before releasing a drag56 numThresholdErrorFrames: 5,57 maxMouseDownedFrames: 158 },59 onUse () {60 this.$target = window61 },62 /**63 * Scroll the page when the cursor goes above/below the threshold64 */65 onFrame ({hands}) {66 if (!hands.multiHandLandmarks) return67 const height = this.handsfree.debug.$canvas.hands.height68 const leftVisible = hands.multiHandedness.some(hand => hand.label === 'Right')69 const rightVisible = hands.multiHandedness.some(hand => hand.label === 'Left')70 71 // Detect if the threshold for clicking is met with specific morphs72 for (let n = 0; n < hands.multiHandLandmarks.length; n++) {73 // Set the hand index74 let hand = hands.multiHandedness[n].label === 'Right' ? 0 : 175 76 for (let finger = 0; finger < 4; finger++) {77 // Check if fingers are touching78 const a = hands.multiHandLandmarks[n][4].x - hands.multiHandLandmarks[n][this.fingertipIndex[finger]].x79 const b = hands.multiHandLandmarks[n][4].y - hands.multiHandLandmarks[n][this.fingertipIndex[finger]].y80 const c = Math.sqrt(a*a + b*b) * height81 const thresholdMet = this.thresholdMet[hand][finger] = c < this.config.threshold82 if (thresholdMet) {83 // Set the current pinch84 this.curPinch[hand][finger] = hands.multiHandLandmarks[n][4]85 86 // Store the original pinch87 if (this.framesSinceLastGrab[hand][finger] > this.config.numThresholdErrorFrames) {88 this.origPinch[hand][finger] = hands.multiHandLandmarks[n][4]89 this.handsfree.TweenMax.killTweensOf(this.tween[hand][finger])90 }91 this.framesSinceLastGrab[hand][finger] = 092 }93 ++this.framesSinceLastGrab[hand][finger]94 }95 }96 // Update the hands object97 hands.origPinch = this.origPinch98 hands.curPinch = this.curPinch99 this.handsfree.data.hands = this.getPinchStates(hands, leftVisible, rightVisible)100 },101 /**102 * Check if we are "mouse clicking"103 */104 getPinchStates (hands, leftVisible, rightVisible) {105 const visible = [leftVisible, rightVisible]106 // Make sure states are available107 hands.pinchState = [108 ['', '', '', ''],109 ['', '', '', '']110 ]111 112 // Loop through every hand and finger113 for (let hand = 0; hand < 2; hand++) {114 for (let finger = 0; finger < 4; finger++) {115 // Click116 if (visible[hand] && this.thresholdMet[hand][finger]) {117 this.pinchDowned[hand][finger]++118 document.body.classList.add(`handsfree-finger-pinched-${hand}-${finger}`, `handsfree-finger-pinched-${finger}`)119 } else {120 this.pinchUp[hand][finger] = this.pinchDowned[hand][finger]121 this.pinchDowned[hand][finger] = 0122 document.body.classList.remove(`handsfree-finger-pinched-${hand}-${finger}`, `handsfree-finger-pinched-${finger}`)123 }124 125 // Set the state126 if (this.pinchDowned[hand][finger] > 0 && this.pinchDowned[hand][finger] <= this.config.maxMouseDownedFrames) {127 hands.pinchState[hand][finger] = 'start'128 } else if (this.pinchDowned[hand][finger] > this.config.maxMouseDownedFrames) {129 hands.pinchState[hand][finger] = 'held'130 } else if (this.pinchUp[hand][finger]) {131 hands.pinchState[hand][finger] = 'released'132 } else {133 hands.pinchState[hand][finger] = ''134 }135 // Emit an event136 if (hands.pinchState[hand][finger]) {137 // Specific hand138 this.handsfree.emit(`finger-pinched-${hand}-${finger}`, {139 event: hands.pinchState[hand][finger],140 origPinch: hands.origPinch[hand][finger],141 curPinch: hands.curPinch[hand][finger]142 })143 this.handsfree.emit(`finger-pinched-${hands.pinchState[hand][finger]}-${hand}-${finger}`, {144 event: hands.pinchState[hand][finger],145 origPinch: hands.origPinch[hand][finger],146 curPinch: hands.curPinch[hand][finger]147 })148 // Any hand149 this.handsfree.emit(`finger-pinched-${finger}`, {150 event: hands.pinchState[hand][finger],151 origPinch: hands.origPinch[hand][finger],152 curPinch: hands.curPinch[hand][finger]153 })154 this.handsfree.emit(`finger-pinched-${hands.pinchState[hand][finger]}-${finger}`, {155 event: hands.pinchState[hand][finger],156 origPinch: hands.origPinch[hand][finger],157 curPinch: hands.curPinch[hand][finger]158 })159 }160 }161 }162 return hands163 }...
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