xobs/lca2020-pay-it-forward
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enable pinch to zoom interaction if overview is disabled (#175)

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Hakim El Hattab 2012-10-14 19:58:24 -04:00
parent 6e0d0e279d
commit 86a907e8cc
2 changed files with 15 additions and 11 deletions
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14
js/reveal.js
View File

@ -102,7 +102,7 @@ var Reveal = (function(){
startSpan: 0, startSpan: 0,
startCount: 0, startCount: 0,
handled: false, handled: false,
threshold: 40 threshold: 80
}; };
/** /**
@ -471,7 +471,7 @@ var Reveal = (function(){
// If there's two touches we need to memorize the distance // If there's two touches we need to memorize the distance
// between those two points to detect pinching // between those two points to detect pinching
if( event.touches.length === 2 ) { if( event.touches.length === 2 && config.overview ) {
touch.startSpan = distanceBetween( { touch.startSpan = distanceBetween( {
x: event.touches[1].clientX, x: event.touches[1].clientX,
y: event.touches[1].clientY y: event.touches[1].clientY
@ -493,7 +493,7 @@ var Reveal = (function(){
// If the touch started off with two points and still has // If the touch started off with two points and still has
// two active touches; test for the pinch gesture // two active touches; test for the pinch gesture
if( event.touches.length === 2 && touch.startCount === 2 ) { if( event.touches.length === 2 && touch.startCount === 2 && config.overview ) {
// The current distance in pixels between the two touch points // The current distance in pixels between the two touch points
var currentSpan = distanceBetween( { var currentSpan = distanceBetween( {
@ -517,9 +517,12 @@ var Reveal = (function(){
} }
} }
event.preventDefault();
} }
// There was only one touch point, look for a swipe // There was only one touch point, look for a swipe
else if( event.touches.length === 1 ) { else if( event.touches.length === 1 && touch.startCount !== 2 ) {
var deltaX = currentX - touch.startX, var deltaX = currentX - touch.startX,
deltaY = currentY - touch.startY; deltaY = currentY - touch.startY;
@ -539,9 +542,10 @@ var Reveal = (function(){
touch.handled = true; touch.handled = true;
navigateDown(); navigateDown();
} }
}
event.preventDefault(); event.preventDefault();
}
} }
// There's a bug with swiping on some Android devices unless // There's a bug with swiping on some Android devices unless
// the default action is always prevented // the default action is always prevented

10
js/reveal.min.js vendored
View File

@ -5,7 +5,7 @@
* *
* Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se * Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se
*/ */
var Reveal=(function(){var l=".reveal .slides>section",b=".reveal .slides>section.present>section",R={controls:true,progress:true,history:false,keyboard:true,overview:true,loop:false,autoSlide:0,mouseWheel:true,rollingLinks:true,theme:null,transition:"default",dependencies:[]},Y=R.autoSlide,m=0,e=0,y,G,ai=[],f={},T="WebkitPerspective" in document.body.style||"MozPerspective" in document.body.style||"msPerspective" in document.body.style||"OPerspective" in document.body.style||"perspective" in document.body.style,n="WebkitTransform" in document.body.style||"MozTransform" in document.body.style||"msTransform" in document.body.style||"OTransform" in document.body.style||"transform" in document.body.style,z=0,k=0,D=0,ab={startX:0,startY:0,startSpan:0,startCount:0,handled:false,threshold:40}; var Reveal=(function(){var l=".reveal .slides>section",b=".reveal .slides>section.present>section",R={controls:true,progress:true,history:false,keyboard:true,overview:true,loop:false,autoSlide:0,mouseWheel:true,rollingLinks:true,theme:null,transition:"default",dependencies:[]},Y=R.autoSlide,m=0,e=0,y,G,ai=[],f={},T="WebkitPerspective" in document.body.style||"MozPerspective" in document.body.style||"msPerspective" in document.body.style||"OPerspective" in document.body.style||"perspective" in document.body.style,n="WebkitTransform" in document.body.style||"MozTransform" in document.body.style||"msTransform" in document.body.style||"OTransform" in document.body.style||"transform" in document.body.style,z=0,k=0,D=0,ab={startX:0,startY:0,startSpan:0,startCount:0,handled:false,threshold:80};
function i(aj){if((!n&&!T)){document.body.setAttribute("class","no-transforms");return;}t(R,aj);P();d();V();}function P(){f.theme=document.querySelector("#theme"); function i(aj){if((!n&&!T)){document.body.setAttribute("class","no-transforms");return;}t(R,aj);P();d();V();}function P(){f.theme=document.querySelector("#theme");
f.wrapper=document.querySelector(".reveal");if(!f.wrapper.querySelector(".progress")&&R.progress){var am=document.createElement("div");am.classList.add("progress"); f.wrapper=document.querySelector(".reveal");if(!f.wrapper.querySelector(".progress")&&R.progress){var am=document.createElement("div");am.classList.add("progress");
am.innerHTML="<span></span>";f.wrapper.appendChild(am);}if(!f.wrapper.querySelector(".controls")&&R.controls){var al=document.createElement("aside");al.classList.add("controls"); am.innerHTML="<span></span>";f.wrapper.appendChild(am);}if(!f.wrapper.querySelector(".controls")&&R.controls){var al=document.createElement("aside");al.classList.add("controls");
@ -33,11 +33,11 @@ t(al,aj);f.wrapper.dispatchEvent(al);}function ag(ak){if(document.querySelector(
}var aj=true;switch(ak.keyCode){case 80:case 33:Z();break;case 78:case 34:x();break;case 72:case 37:B();break;case 76:case 39:j();break;case 75:case 38:u(); }var aj=true;switch(ak.keyCode){case 80:case 33:Z();break;case 78:case 34:x();break;case 72:case 37:B();break;case 76:case 39:j();break;case 75:case 38:u();
break;case 74:case 40:F();break;case 36:O(0);break;case 35:O(Number.MAX_VALUE);break;case 32:L()?ad():x();break;case 13:L()?ad():aj=false;break;case 66:case 190:aa(); break;case 74:case 40:F();break;case 36:O(0);break;case 35:O(Number.MAX_VALUE);break;case 32:L()?ad():x();break;case 13:L()?ad():aj=false;break;case 66:case 190:aa();
break;default:aj=false;}if(aj){ak.preventDefault();}else{if(ak.keyCode===27&&T){X();ak.preventDefault();}}N();}function A(aj){ab.startX=aj.touches[0].clientX; break;default:aj=false;}if(aj){ak.preventDefault();}else{if(ak.keyCode===27&&T){X();ak.preventDefault();}}N();}function A(aj){ab.startX=aj.touches[0].clientX;
ab.startY=aj.touches[0].clientY;ab.startCount=aj.touches.length;if(aj.touches.length===2){ab.startSpan=S({x:aj.touches[1].clientX,y:aj.touches[1].clientY},{x:ab.startX,y:ab.startY}); ab.startY=aj.touches[0].clientY;ab.startCount=aj.touches.length;if(aj.touches.length===2&&R.overview){ab.startSpan=S({x:aj.touches[1].clientX,y:aj.touches[1].clientY},{x:ab.startX,y:ab.startY});
}}function ae(ao){if(!ab.handled){var am=ao.touches[0].clientX;var al=ao.touches[0].clientY;if(ao.touches.length===2&&ab.startCount===2){var an=S({x:ao.touches[1].clientX,y:ao.touches[1].clientY},{x:ab.startX,y:ab.startY}); }}function ae(ao){if(!ab.handled){var am=ao.touches[0].clientX;var al=ao.touches[0].clientY;if(ao.touches.length===2&&ab.startCount===2&&R.overview){var an=S({x:ao.touches[1].clientX,y:ao.touches[1].clientY},{x:ab.startX,y:ab.startY});
if(Math.abs(ab.startSpan-an)>ab.threshold){ab.handled=true;if(an<ab.startSpan){I();}else{ad();}}}else{if(ao.touches.length===1){var ak=am-ab.startX,aj=al-ab.startY; if(Math.abs(ab.startSpan-an)>ab.threshold){ab.handled=true;if(an<ab.startSpan){I();}else{ad();}}ao.preventDefault();}else{if(ao.touches.length===1&&ab.startCount!==2){var ak=am-ab.startX,aj=al-ab.startY;
if(ak>ab.threshold&&Math.abs(ak)>Math.abs(aj)){ab.handled=true;B();}else{if(ak<-ab.threshold&&Math.abs(ak)>Math.abs(aj)){ab.handled=true;j();}else{if(aj>ab.threshold){ab.handled=true; if(ak>ab.threshold&&Math.abs(ak)>Math.abs(aj)){ab.handled=true;B();}else{if(ak<-ab.threshold&&Math.abs(ak)>Math.abs(aj)){ab.handled=true;j();}else{if(aj>ab.threshold){ab.handled=true;
u();}else{if(aj<-ab.threshold){ab.handled=true;F();}}}}}}ao.preventDefault();}else{if(navigator.userAgent.match(/android/gi)){ao.preventDefault();}}}function W(aj){ab.handled=false; u();}else{if(aj<-ab.threshold){ab.handled=true;F();}}}}ao.preventDefault();}}}else{if(navigator.userAgent.match(/android/gi)){ao.preventDefault();}}}function W(aj){ab.handled=false;
}function p(aj){clearTimeout(z);z=setTimeout(function(){var ak=aj.detail||-aj.wheelDelta;if(ak>0){x();}else{Z();}},100);}function w(aj){J();}function C(aj){if(L()){aj.preventDefault(); }function p(aj){clearTimeout(z);z=setTimeout(function(){var ak=aj.detail||-aj.wheelDelta;if(ak>0){x();}else{Z();}},100);}function w(aj){J();}function C(aj){if(L()){aj.preventDefault();
ad();m=this.getAttribute("data-index-h");e=this.getAttribute("data-index-v");a();}}function M(){if(T&&!("msPerspective" in document.body.style)){var ak=document.querySelectorAll(".reveal .slides section a:not(.image)"); ad();m=this.getAttribute("data-index-h");e=this.getAttribute("data-index-v");a();}}function M(){if(T&&!("msPerspective" in document.body.style)){var ak=document.querySelectorAll(".reveal .slides section a:not(.image)");
for(var al=0,aj=ak.length;al<aj;al++){var am=ak[al];if(am.textContent&&!am.querySelector("img")&&(!am.className||!am.classList.contains(am,"roll"))){am.classList.add("roll"); for(var al=0,aj=ak.length;al<aj;al++){var am=ak[al];if(am.textContent&&!am.querySelector("img")&&(!am.className||!am.classList.contains(am,"roll"))){am.classList.add("roll");