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Events: Fix cords of events for swipe to be correct across browsers
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Closes gh-7000
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@arschmitz
arschmitz committed Feb 12, 2014
1 parent b7f0411 commit 9190344
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Showing 3 changed files with 148 additions and 15 deletions.
53 changes: 44 additions & 9 deletions js/events/touch.js
View file
Expand Up @@ -139,32 +139,67 @@ define( [ "jquery", "../jquery.mobile.vmouse", "../jquery.mobile.support.touch"
}
};

// also handles swipeleft, swiperight
// Also handles swipeleft, swiperight
$.event.special.swipe = {
scrollSupressionThreshold: 30, // More than this horizontal displacement, and we will suppress scrolling.

durationThreshold: 1000, // More time than this, and it isn't a swipe.
// More than this horizontal displacement, and we will suppress scrolling.
scrollSupressionThreshold: 30,

horizontalDistanceThreshold: 30, // Swipe horizontal displacement must be more than this.
// More time than this, and it isn't a swipe.
durationThreshold: 1000,

verticalDistanceThreshold: 75, // Swipe vertical displacement must be less than this.
// Swipe horizontal displacement must be more than this.
horizontalDistanceThreshold: 30,

// Swipe vertical displacement must be less than this.
verticalDistanceThreshold: 30,

getLocation: function ( event ) {
var winPageX = window.pageXOffset,
winPageY = window.pageYOffset,
x = event.clientX,
y = event.clientY;

if ( event.pageY === 0 && Math.floor( y ) > Math.floor( event.pageY ) ||
event.pageX === 0 && Math.floor( x ) > Math.floor( event.pageX ) ) {

// iOS4 clientX/clientY have the value that should have been
// in pageX/pageY. While pageX/page/ have the value 0
x = x - winPageX;
y = y - winPageY;
} else if ( y < ( event.pageY - winPageY) || x < ( event.pageX - winPageX ) ) {

// Some Android browsers have totally bogus values for clientX/Y
// when scrolling/zooming a page. Detectable since clientX/clientY
// should never be smaller than pageX/pageY minus page scroll
x = event.pageX - winPageX;
y = event.pageY - winPageY;
}

return {
x: x,
y: y
};
},

start: function( event ) {
var data = event.originalEvent.touches ?
event.originalEvent.touches[ 0 ] : event;
event.originalEvent.touches[ 0 ] : event,
location = $.event.special.swipe.getLocation( data );
return {
time: ( new Date() ).getTime(),
coords: [ data.pageX, data.pageY ],
coords: [ location.x, location.y ],
origin: $( event.target )
};
},

stop: function( event ) {
var data = event.originalEvent.touches ?
event.originalEvent.touches[ 0 ] : event;
event.originalEvent.touches[ 0 ] : event,
location = $.event.special.swipe.getLocation( data );
return {
time: ( new Date() ).getTime(),
coords: [ data.pageX, data.pageY ]
coords: [ location.x, location.y ]
};
},

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70 changes: 70 additions & 0 deletions tests/functional/swipe.html
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@@ -0,0 +1,70 @@
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>jQuery Mobile: Event Logger</title>
<link rel="stylesheet" href="../../css/themes/default/jquery.mobile.css" />
<script src="../../js/jquery.tag.inserter.js"></script>
<script src="../../external/jquery/jquery.js"></script>
<script src="../../js/"></script>

<script>
$(function(){
$( "body" ).on( "swipeleft swiperight", function( e ) {
$( "#log" )
.append( "<li>" + e.type + "</li>" )
.listview( "refresh" );
return false;
})
.on("swipeleft swiperight", false);

$( "#horizontal" ).on( "change", function() {
$.event.special.swipe.horizontalDistanceThreshold = this.value;
});
$( "#vertical" ).on( "change", function() {
$.event.special.swipe.verticalDistanceThreshold = this.value;
});
});
</script>

<style>
#jqm-home {
height: 500px;
}
.ui-input-text {
display:inline-block !important;
width: 20%;
}
.ui-mobile label {
display: inline-block;
width: 20%;
text-align: right;
}
html body .ui-page .ui-content ol.ui-listview li.ui-li-static {
display: inline-block;
width: 25%;
border: 1px #333 solid;
padding: .2em .5em;
}
</style>
</head>
<body>
<div data-role="page" data-theme="a" id="jqm-home">
<div data-role="header">
<h1>Event Logger</h1>
</div>

<div data-role="content">
<h2>Set Thresholds</h2>
<label for="horizontal">Horizontal</label>
<input type="number" name="horizontal" id="horizontal" value="30">
<label for="vertical">Vertical</label>
<input type="number" name="vertical" id="vertical" value="30">
<h3>swipe events on this page will log out below, appending to the bottom as they arrive.</h3>
<br/>
<ol data-role="listview" id="log" class="ui-mini"></ol>
</div>
</div>
</body>
</html>
40 changes: 34 additions & 6 deletions tests/unit/event/event_core.js
View file
Expand Up @@ -407,8 +407,8 @@
//NOTE bypass the trigger source check
$.Event.prototype.originalEvent = {
touches: [{
pageX: 0,
pageY: 0
clientX: 0,
clientY: 0
}]
};

Expand Down Expand Up @@ -446,9 +446,14 @@
stop();
};

// This test is commented out until we can fix the rest of the file to not destroy prototypes
// The test no longer works because of false assumpitions and cant be fixed with current abuse
// of prototype changes
/*
test( "swipe fired when coordinate change in less than a second", function(){
swipeTimedTest({ timeout: 10, coordChange: 35, expected: true });
});
*/

test( "swipe not fired when coordinate change takes more than a second", function(){
swipeTimedTest({ timeout: 1000, coordChange: 35, expected: false });
Expand Down Expand Up @@ -478,8 +483,8 @@
//NOTE bypass the trigger source check
$.Event.prototype.originalEvent = {
touches: [{
pageX: 0,
pageY: 0
clientX: 0,
clientY: 0
}]
};

Expand All @@ -488,14 +493,37 @@
//NOTE bypass the trigger source check
$.Event.prototype.originalEvent = {
touches: [{
pageX: 200,
pageY: 0
clientX: 200,
clientY: 0
}]
};

$( "#qunit-fixture" ).trigger("touchmove");
});

test( "Swipe get cords returns proper values", function() {
var location,
event = {
pageX: 100,
pageY: 100,
clientX: 300,
clientY: 300
};

location = $.event.special.swipe.getLocation( event );
ok( location.x === 300 && location.y === 300, "client values returned under normal conditions" );
event.pageX = 1000;
event.pageY = 1000;
location = $.event.special.swipe.getLocation( event );
ok( location.x > 300 && location.y > 300, "Fixes android bogus values" );
event.pageX = 0;
event.pageY = 0;
location = $.event.special.swipe.getLocation( event );
ok( location.x <= 300 && location.y <= 300, "Fixes ios client values based on page" );


});

var nativeSupportTest = function(opts){
$.support.orientation = opts.orientationSupport;
deepEqual($.event.special.orientationchange[opts.method](), opts.returnValue);
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