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Added support for flicking using mouse events on the desktop #2

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Added support for flicking using mouse events on the desktop #2

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b38ec2c
support for desktop flicking
marioestrada Feb 24, 2012
f7a656a
not using global variable to prevent conflicts
marioestrada Feb 24, 2012
0e515e7
added click prevention when scrolling is vertical
marioestrada Feb 24, 2012
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52 changes: 45 additions & 7 deletions src/zepto.flickable.js
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Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,6 @@
* Zepto JavaScript Library
*/
(function( $ ){

var eventData,
eventDataObject = {

Expand All @@ -38,7 +37,8 @@
flickableObjects = 0, // Number of flickable objects that have been initialised
flickThreshold = 0.7, // Threshold in which a "touch and move" becomes a "flick" (the higher the number, the faster the swipe)
minTravelDistance = 5, // This is the minimum distance in px the user's finger must travel for it to be considered a valid flick
debug = false; // If true, a floating div will display event data on screen during touches
debug = false, // If true, a floating div will display event data on screen during touches
element_moving;


var methods = {
Expand Down Expand Up @@ -133,6 +133,14 @@
$(this).flickable('flickDown', settings.onFlickDown);
},

mousedown: function(e) {
element_moving = $(this)[0];
e.preventDefault();

_resetEventData(e);
$(this).trigger("onStart");
},

touchstart: function(e) {
_resetEventData(e);
$(this).trigger("onStart");
Expand All @@ -155,6 +163,31 @@

});

$('body').bind({
mousemove: function(e) {
el = $(element_moving);

if(el && el.length) {
if(settings.preventDefault) {
e.preventDefault();
}
_updateDelta(e);
el.trigger("onMove");
}
},
mouseup: function(e) {

el = $(element_moving);
element_moving = null;

if(el) {
e.preventDefault();

_endTouch(e);
el.trigger("onEnd");
}
}
});

if(!_browserSupports('transform')){
// Browser does not support CSS3 transitions ಠ_ಠ
Expand Down Expand Up @@ -547,8 +580,8 @@
var pageX, pageY;

// Android and iOS structure event data differently
(typeof e.touches[0].pageX != 'undefined') ? pageX=e.touches[0].pageX : pageX=e.pageX;
(typeof e.touches[0].pageY != 'undefined') ? pageY=e.touches[0].pageY : pageY=e.pageY;
(e.touches && typeof e.touches[0].pageX != 'undefined') ? pageX=e.touches[0].pageX : pageX=e.pageX;
(e.touches && typeof e.touches[0].pageY != 'undefined') ? pageY=e.touches[0].pageY : pageY=e.pageY;

eventData = eventDataObject;
eventData.start = {x:pageX, y:pageY, time: e.timeStamp};
Expand All @@ -567,8 +600,8 @@
var pageX, pageY;

// Android and iOS structure event data differently
(typeof e.touches[0].pageX != 'undefined') ? pageX=e.touches[0].pageX : pageX=e.pageX;
(typeof e.touches[0].pageY != 'undefined') ? pageY=e.touches[0].pageY : pageY=e.pageY;
(e.touches && typeof e.touches[0].pageX != 'undefined') ? pageX=e.touches[0].pageX : pageX=e.pageX;
(e.touches && typeof e.touches[0].pageY != 'undefined') ? pageY=e.touches[0].pageY : pageY=e.pageY;

var dirX, dirY,
prevX = pageX,
Expand Down Expand Up @@ -617,8 +650,13 @@
flickY = 0;

if((speedX > flickThreshold)) {
el = $(element_moving);
if(el)
$(this).one('click', function(e) { e.preventDefault(); });
(Math.abs(eventData.delta.dist.x) >= minTravelDistance) ? flickX = dirX : flickX = 0;
} else if((speedY > flickThreshold)) {
if(el)
$(this).one('click', function(e) { e.preventDefault(); });
(Math.abs(eventData.delta.dist.y) >= minTravelDistance) ? flickY = dirY : flickY = 0;
}

Expand Down Expand Up @@ -734,4 +772,4 @@

}

})( Zepto );
})( Zepto );