var div = document.body;
var mouse = {
isDown: false,
inLeft: false,
inRight: false,
downTimestamp: null
};
var width, thresholdStart, thresholdEnd, thresholdMilliseconds;
function resize(){
width = window.innerWidth;
thresholdStart = 0.1*width;
thresholdEnd = 0.13*width;
thresholdMilliseconds = 500;
}
document.addEventListener("resize", resize, false);
resize();
div.addEventListener('mousedown', function(e){
var x = e.pageX;
mouse.isDown = true;
mouse.downTimestamp = performance.now();
if(x < thresholdStart){
mouse.inLeft = true;
} else if(x > width-thresholdStart){
mouse.inRight = true;
}
});
div.addEventListener('mousemove', function(e){
var x = e.pageX;
if(mouse.inLeft && x > thresholdEnd){
mouse.inLeft = false;
if(performance.now() - mouse.downTimestamp < thresholdMilliseconds){
swipeEdgeFromLeft();
}
} else if(mouse.inRight && x < width-thresholdEnd){
mouse.inRight = false;
if(performance.now() - mouse.downTimestamp < thresholdMilliseconds){
swipeEdgeFromRight();
}
}
});
div.addEventListener('mouseup', function(e){
mouse.isDown = false;
mouse.inLeft = false;
mouse.inRight = false;
mouse.downTimestamp = null;
});
function swipeEdgeFromLeft(){
console.log("edge swipe from left");
}
function swipeEdgeFromRight(){
console.log("edge swipe from right");
}
body {
max-width: 100vw;
height: 100vh;
}
.bar {
height: 100vh;
background-color: rgba(0,0,0,0.4);
position: fixed;
pointer-events: none;
}
#left-inner-threshold {
width: calc(0.1 * 100vw);
left: 0;
}
#right-inner-threshold {
width: calc(0.1 * 100vw);
right: 0;
}
#left-outer-threshold {
width: calc(0.13 * 100vw);
left: 0;
}
#right-outer-threshold {
width: calc(0.13 * 100vw);
right: 0;
}
<div id="left-inner-threshold" class="bar"></div>
<div id="left-outer-threshold" class="bar"></div>
<div id="right-inner-threshold" class="bar"></div>
<div id="right-outer-threshold" class="bar"></div>