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touchtest.html
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touchtest.html
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<html>
<head>
<title>Touch Test</title>
<meta name="viewport" content="width=device-width, maximum-scale=1.0" />
<style type="text/css">
body {
-webkit-user-select: none;
}
#touchlog {
background-color: #AAAAAA;
overflow: auto;
position: absolute;
bottom: 0;
left: 0;
height: 10em;
width: 100%;
}
.message {
border: 0;
padding: 0;
margin: 0;
}
.touchpoint {
background-color: hsl(0, 100%, 50%);
display: block;
width: 100px;
height: 100px;
-moz-border-radius: 20px;
-webkit-border-radius: 20px;
margin: 0;
padding: 0;
position: absolute;
font-size: 2em;
}
</style>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<script type="text/javascript">
var log = function(message) {
// Remove all but last n messages
var numMessages = $('#touchlog .message').length;
$('#touchlog .message:lt(' + (numMessages - 10) + ')').remove();
$('#touchlog')
.append('<p class="message">' + message + '</p>')
.scrollTop( $('#touchlog').attr('scrollHeight') );
};
var bindTouch = function() {
var jTouchPoints = [];
for (var i = 0; i < 20; i++) {
var jTouchPoint = $('<span class="touchpoint">' + i + '</span>').hide().appendTo('body');
var colour = 'hsl(' + ((360 / 10) * i) % 360 + ', 100%, 50%)';
jTouchPoint.css( 'background-color', colour );
jTouchPoints[i] = jTouchPoint;
};
var updateFromTouches = function(touches) {
$('.touchpoint').hide();
for (var i = 0; i < touches.length; i++) {
var touch = touches[i];
var jTouchPoint = jTouchPoints[i];
var newPos = {
left: touch.pageX - jTouchPoint.width() / 2,
top: touch.pageY - jTouchPoint.height() / 2,
};
jTouchPoint.css(newPos).show();
}
};
$('body')
.bind('touchstart', function (event) {
event.preventDefault();
var touches = event.originalEvent.touches;
log('touchstart: touches(' + touches.length + ')');
updateFromTouches(touches);
})
.bind('touchmove', function (event) {
event.preventDefault();
var touches = event.originalEvent.touches;
log(' touchmove: touches(' + touches.length + '/' + event.originalEvent.changedTouches.length +')');
updateFromTouches(touches);
})
.bind('touchend', function (event) {
event.preventDefault();
log('touchend: touches(' + event.originalEvent.touches.length + ')');
})
.bind('gesturestart', function (event) {
event.preventDefault();
log('gesturestart');
})
.bind('gesturechange', function (event) {
event.preventDefault();
var rot = event.originalEvent.rotation.toFixed(2);
var scale = event.originalEvent.scale.toFixed(2);
log(' gesturechange: rot(' + rot + ') scale(' + scale + ')');
})
.bind('gestureend', function(event) {
event.preventDefault();
log('gestureend');
})
};
var synthesizeTouchEvent = function(which, pageX, pageY) {
var event = $.Event(which);
var touches = [{ 'pageX': pageX, 'pageY': pageY }];
// $$$ correct for touchend?
event.originalEvent = { 'touches': touches, 'changedTouches': touches };
touches = null;
return event;
};
var bindMouseTouch = function() {
$('body')
.bind('mousedown', function(event) {
if (event.which != 1) {
// not left button
return true;
};
log('mousedown: ' + event.pageX + ',' + event.pageY);
event.preventDefault();
if ($.data(this, 'mousestate') == 'down') {
return;
} else {
$.data(this, 'mousestate', 'down');
}
var touch = synthesizeTouchEvent('touchstart', event.pageX, event.pageY);
$(event.target).trigger(touch);
})
.bind('mousemove', function(event) {
if (event.which != 1) {
// not left button
return true;
};
event.preventDefault();
if ($.data(this, 'mousestate') != 'down') {
return;
}
log('mousemove: ' + event.pageX + ',' + event.pageY);
var touch = synthesizeTouchEvent('touchmove', event.pageX, event.pageY);
$(event.target).trigger(touch);
})
.bind('mouseup', function(event) {
if (event.which != 1) {
// not left button
return true;
};
log('mouseup: ' + event.pageX + ',' + event.pageY);
event.preventDefault();
if ($.data(this, 'mousestate') == 'down') {
var touch = synthesizeTouchEvent('touchend', event.pageX, event.pageY);
$(event.target).trigger(touch);
};
$.data(this, 'mousestate', 'up');
});
};
$(document).ready(function() {
log('Started');
bindTouch();
bindMouseTouch();
});
</script>
</head>
<body>
<h1>Touch Test</h1>
<span class='touchpoint'> </span>
<div id='touchlog'>
</div>
</body>
</html>