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zoomevent.html
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zoomevent.html
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<html>
<head>
<meta charset="utf-8">
<script>
var TIMEOUT_DELAY=500;
document.addEventListener("DOMContentLoaded", function(event) {
var tapup
, tapdown
, tapinfo
, mouseup
, mousedown
, mouseinfo
, link
;
tapup = document.getElementById("tapup");
tapdown = document.getElementById("tapdown");
tapdowninfo = document.getElementById("tapdowninfo");
tapupinfo = document.getElementById("tapupinfo");
mouseup = document.getElementById("mouseup");
mousedown = document.getElementById("mousedown");
mousedowninfo = document.getElementById("mousedowninfo");
mouseupinfo = document.getElementById("mouseupinfo");
document.getElementById("link").addEventListener("click", linkClicked, false);
document.addEventListener("touchstart", createTapCallback(tapdown, tapdowninfo), false);
document.addEventListener("touchend", createTapCallback(tapup, tapupinfo), false);
document.addEventListener("mousedown", createMouseCallback(mousedown, mousedowninfo), false);
document.addEventListener("mouseup", createMouseCallback(mouseup, mouseupinfo), false);
});
function linkClicked(evt) {
console.log("got event at client(" + evt.clientX + "," + evt.clientY + ") page(" + evt.pageX + "," + evt.pageY + ")");
}
function updateInfo(info, data) {
info.innerHTML = "P:(" + data.pageX + ", " + data.pageY + ") C:(" + data.clientX + ", " + data.clientY + ")";
}
function createTapCallback(el, info) {
var offset = el.offsetHeight / 2;
return function(evt) {
var touches = evt.changedTouches;
if (touches.length > 0) {
window.setTimeout(function() {
el.style.visibility = "visible";
el.style.top = (touches[0].pageY - offset).toString() + "px";
el.style.left = (touches[0].pageX - offset).toString() + "px";
updateInfo(info, touches[0]);
}, TIMEOUT_DELAY);
}
};
}
function createMouseCallback(el, info) {
var offset = el.offsetHeight / 2;
return function(evt) {
window.setTimeout(function() {
el.style.visibility = "visible";
el.style.top = (evt.pageY - offset).toString() + "px";
el.style.left = (evt.pageX - offset).toString() + "px";
updateInfo(info, evt);
}, TIMEOUT_DELAY);
};
}
</script>
<style type="text/css">
body {
background-color: white;
}
.inline {
display: inline-block;
font-family: monospace;
}
#info {
z-index: 6;
display: inline-block;
position: fixed;
bottom: 5px;
}
#tapup, #tapdown, #mouseup, #mousedown {
display: inline-block;
visibility: hidden;
position: absolute;
top: 20px;
left: 30px;
margin: 0 auto;
}
#tapup {
z-index: 5;
background-color: rgb(255, 0, 0);
width: 20px;
height: 20px;
}
#tapdown {
z-index: 4;
background-color: rgb(100, 100, 255);
width: 30px;
height: 30px;
}
#mouseup {
z-index: 3;
background-color: rgb(0, 255, 0);
width: 40px;
height: 40px;
}
#mousedown {
z-index: 2;
background-color: rgb(127, 127, 127);
width: 50px;
height: 50px;
}
.container {
display: flex;
flex-direction: column;
height: 100%;
box-sizing: border-box;
}
.box {
flex: none;
flex-grow: 0;
flex-shrink: 0;
flex-basis: auto;
box-sizing: border-box;
}
.space {
height: 300px;
}
.scroll {
flex: 1;
flex-grow: 1;
flex-shrink: 1;
flex-basis: 0%;
position: relative;
overflow-y: auto;
box-sizing: border-box;
}
.shift {
text-align: center;
}
</style>
</head>
<body>
<div class="inline" id="info">
<div style="background-color: rgb(127,127,127); display: inline-block;"> </div>
Down Mouse: <div class="inline" id="mousedowninfo">None</div><br>
<div style="background-color: rgb(0,255,0); display: inline-block;"> </div>
Up Mouse: <div class="inline" id="mouseupinfo">None</div><br>
<div style="background-color: rgb(100,100,255); display: inline-block;"> </div>
Down Tap: <div class="inline" id="tapdowninfo">None</div><br>
<div style="background-color: rgb(255,0,0); display: inline-block;"> </div>
Up Tap: <div class="inline" id="tapupinfo">None</div>
</div>
<div id="mouseup"></div>
<div id="mousedown"></div>
<div id="tapdown"></div>
<div id="tapup"></div>
<div class="container">
<div class="box">Text before the div.</div>
<div class="scroll">
<!--
<div class="space"></div>
<div class="space"></div>
<div class="space"></div>
<div class="space"></div>
-->
<div class="space"></div>
<div class="shift">
<a id="link" href="#">LINK</a>
</div>
<div class="space"></div>
<!--
<div class="space"></div>
<div class="space"></div>
<div class="space"></div>
<div class="space"></div>
<div class="space"></div>
-->
</div>
<p>
</div>
</body>
</html>