Difference between revisions of "Team:UCSC/new-testing"

Line 336: Line 336:
 
};
 
};
 
   </script>
 
   </script>
 +
 +
<script >
 +
    (function() {
 +
// Swipe Content Plugin - by CodyHouse.co
 +
// https://codyhouse.co/ds/components/info/swipe-content
 +
var SwipeContent = function(element) {
 +
this.element = element;
 +
this.delta = [false, false];
 +
this.dragging = false;
 +
this.intervalId = false;
 +
initSwipeContent(this);
 +
};
 +
 +
function initSwipeContent(content) {
 +
content.element.addEventListener('mousedown', handleEvent.bind(content));
 +
content.element.addEventListener('touchstart', handleEvent.bind(content));
 +
};
 +
 +
function initDragging(content) {
 +
//add event listeners
 +
content.element.addEventListener('mousemove', handleEvent.bind(content));
 +
content.element.addEventListener('touchmove', handleEvent.bind(content));
 +
content.element.addEventListener('mouseup', handleEvent.bind(content));
 +
content.element.addEventListener('mouseleave', handleEvent.bind(content));
 +
content.element.addEventListener('touchend', handleEvent.bind(content));
 +
};
 +
 +
function cancelDragging(content) {
 +
//remove event listeners
 +
if(content.intervalId) {
 +
(!window.requestAnimationFrame) ? clearInterval(content.intervalId) : window.cancelAnimationFrame(content.intervalId);
 +
content.intervalId = false;
 +
}
 +
content.element.removeEventListener('mousemove', handleEvent.bind(content));
 +
content.element.removeEventListener('touchmove', handleEvent.bind(content));
 +
content.element.removeEventListener('mouseup', handleEvent.bind(content));
 +
content.element.removeEventListener('mouseleave', handleEvent.bind(content));
 +
content.element.removeEventListener('touchend', handleEvent.bind(content));
 +
};
 +
 +
function handleEvent(event) {
 +
switch(event.type) {
 +
case 'mousedown':
 +
case 'touchstart':
 +
startDrag(this, event);
 +
break;
 +
case 'mousemove':
 +
case 'touchmove':
 +
drag(this, event);
 +
break;
 +
case 'mouseup':
 +
case 'mouseleave':
 +
case 'touchend':
 +
endDrag(this, event);
 +
break;
 +
}
 +
};
 +
 +
function startDrag(content, event) {
 +
content.dragging = true;
 +
// listen to drag movements
 +
initDragging(content);
 +
content.delta = [parseInt(unify(event).clientX), parseInt(unify(event).clientY)];
 +
// emit drag start event
 +
emitSwipeEvents(content, 'dragStart', content.delta);
 +
};
 +
 +
function endDrag(content, event) {
 +
cancelDragging(content);
 +
// credits: https://css-tricks.com/simple-swipe-with-vanilla-javascript/
 +
var dx = parseInt(unify(event).clientX),
 +
    dy = parseInt(unify(event).clientY);
 +
 +
  // check if there was a left/right swipe
 +
if(content.delta && (content.delta[0] || content.delta[0] === 0)) {
 +
    var s = Math.sign(dx - content.delta[0]);
 +
 +
if(Math.abs(dx - content.delta[0]) > 30) {
 +
(s < 0) ? emitSwipeEvents(content, 'swipeLeft', [dx, dy]) : emitSwipeEvents(content, 'swipeRight', [dx, dy]);
 +
}
 +
 +
    content.delta[0] = false;
 +
  }
 +
// check if there was a top/bottom swipe
 +
  if(content.delta && (content.delta[1] || content.delta[1] === 0)) {
 +
  var y = Math.sign(dy - content.delta[1]);
 +
 +
  if(Math.abs(dy - content.delta[1]) > 30) {
 +
    (y < 0) ? emitSwipeEvents(content, 'swipeUp', [dx, dy]) : emitSwipeEvents(content, 'swipeDown', [dx, dy]);
 +
    }
 +
 +
    content.delta[1] = false;
 +
  }
 +
// emit drag end event
 +
  emitSwipeEvents(content, 'dragEnd', [dx, dy]);
 +
  content.dragging = false;
 +
};
 +
 +
function drag(content, event) {
 +
if(!content.dragging) return;
 +
// emit dragging event with coordinates
 +
(!window.requestAnimationFrame)
 +
? content.intervalId = setTimeout(function(){emitDrag.bind(content, event);}, 250)
 +
: content.intervalId = window.requestAnimationFrame(emitDrag.bind(content, event));
 +
};
 +
 +
function emitDrag(event) {
 +
emitSwipeEvents(this, 'dragging', [parseInt(unify(event).clientX), parseInt(unify(event).clientY)]);
 +
};
 +
 +
function unify(event) {
 +
// unify mouse and touch events
 +
return event.changedTouches ? event.changedTouches[0] : event;
 +
};
 +
 +
function emitSwipeEvents(content, eventName, detail) {
 +
// emit event with coordinates
 +
var event = new CustomEvent(eventName, {detail: {x: detail[0], y: detail[1]}});
 +
content.element.dispatchEvent(event);
 +
};
 +
 +
window.SwipeContent = SwipeContent;
 +
 +
//initialize the SwipeContent objects
 +
var swipe = document.getElementsByClassName('js-swipe-content');
 +
if( swipe.length > 0 ) {
 +
for( var i = 0; i < swipe.length; i++) {
 +
(function(i){new SwipeContent(swipe[i]);})(i);
 +
}
 +
}
 +
}());
 +
  </script>
 +
 +
 +
  
  
 
</html>
 
</html>

Revision as of 03:23, 14 October 2019

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    January 16th, 2014

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