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Updates mousewheel lib
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@stephomi
stephomi committed Jan 18, 2014
1 parent b45c617 commit ceae47c
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Showing 2 changed files with 132 additions and 46 deletions.
168 changes: 126 additions & 42 deletions lib/jquery.mousewheel.js
View file
@@ -1,16 +1,12 @@
/*! Copyright (c) 2013 Brandon Aaron (http://brandonaaron.net)
/*! Copyright (c) 2013 Brandon Aaron (http://brandon.aaron.sh)
* Licensed under the MIT License (LICENSE.txt).
*
* Thanks to: http://adomas.org/javascript-mouse-wheel/ for some pointers.
* Thanks to: Mathias Bank(http://www.mathias-bank.de) for a scope bug fix.
* Thanks to: Seamus Leahy for adding deltaX and deltaY
* Version: 3.1.9
*
* Version: 3.1.3
*
* Requires: 1.2.2+
* Requires: jQuery 1.2.2+
*/

(function (factory) {
(function (factory) {
if ( typeof define === 'function' && define.amd ) {
// AMD. Register as an anonymous module.
define(['jquery'], factory);
Expand All @@ -23,17 +19,21 @@
}
}(function ($) {

var toFix = ['wheel', 'mousewheel', 'DOMMouseScroll', 'MozMousePixelScroll'];
var toBind = 'onwheel' in document || document.documentMode >= 9 ? ['wheel'] : ['mousewheel', 'DomMouseScroll', 'MozMousePixelScroll'];
var lowestDelta, lowestDeltaXY;
var toFix = ['wheel', 'mousewheel', 'DOMMouseScroll', 'MozMousePixelScroll'],
toBind = ( 'onwheel' in document || document.documentMode >= 9 ) ?
['wheel'] : ['mousewheel', 'DomMouseScroll', 'MozMousePixelScroll'],
slice = Array.prototype.slice,
nullLowestDeltaTimeout, lowestDelta;

if ( $.event.fixHooks ) {
for ( var i = toFix.length; i; ) {
$.event.fixHooks[ toFix[--i] ] = $.event.mouseHooks;
}
}

$.event.special.mousewheel = {
var special = $.event.special.mousewheel = {
version: '3.1.9',

setup: function() {
if ( this.addEventListener ) {
for ( var i = toBind.length; i; ) {
Expand All @@ -42,6 +42,9 @@
} else {
this.onmousewheel = handler;
}
// Store the line height and page height for this particular element
$.data(this, 'mousewheel-line-height', special.getLineHeight(this));
$.data(this, 'mousewheel-page-height', special.getPageHeight(this));
},

teardown: function() {
Expand All @@ -52,66 +55,147 @@
} else {
this.onmousewheel = null;
}
},

getLineHeight: function(elem) {
return parseInt($(elem)['offsetParent' in $.fn ? 'offsetParent' : 'parent']().css('fontSize'), 10);
},

getPageHeight: function(elem) {
return $(elem).height();
},

settings: {
adjustOldDeltas: true
}
};

$.fn.extend({
mousewheel: function(fn) {
return fn ? this.bind("mousewheel", fn) : this.trigger("mousewheel");
return fn ? this.bind('mousewheel', fn) : this.trigger('mousewheel');
},

unmousewheel: function(fn) {
return this.unbind("mousewheel", fn);
return this.unbind('mousewheel', fn);
}
});


function handler(event) {
var orgEvent = event || window.event,
args = [].slice.call(arguments, 1),
delta = 0,
deltaX = 0,
deltaY = 0,
absDelta = 0,
absDeltaXY = 0,
fn;
var orgEvent = event || window.event,
args = slice.call(arguments, 1),
delta = 0,
deltaX = 0,
deltaY = 0,
absDelta = 0;
event = $.event.fix(orgEvent);
event.type = "mousewheel";
event.type = 'mousewheel';

// Old school scrollwheel delta
if ( orgEvent.wheelDelta ) { delta = orgEvent.wheelDelta; }
if ( orgEvent.detail ) { delta = orgEvent.detail * -1; }
if ( 'detail' in orgEvent ) { deltaY = orgEvent.detail * -1; }
if ( 'wheelDelta' in orgEvent ) { deltaY = orgEvent.wheelDelta; }
if ( 'wheelDeltaY' in orgEvent ) { deltaY = orgEvent.wheelDeltaY; }
if ( 'wheelDeltaX' in orgEvent ) { deltaX = orgEvent.wheelDeltaX * -1; }

// Firefox < 17 horizontal scrolling related to DOMMouseScroll event
if ( 'axis' in orgEvent && orgEvent.axis === orgEvent.HORIZONTAL_AXIS ) {
deltaX = deltaY * -1;
deltaY = 0;
}

// Set delta to be deltaY or deltaX if deltaY is 0 for backwards compatabilitiy
delta = deltaY === 0 ? deltaX : deltaY;

// New school wheel delta (wheel event)
if ( orgEvent.deltaY ) {
if ( 'deltaY' in orgEvent ) {
deltaY = orgEvent.deltaY * -1;
delta = deltaY;
}
if ( orgEvent.deltaX ) {
if ( 'deltaX' in orgEvent ) {
deltaX = orgEvent.deltaX;
delta = deltaX * -1;
if ( deltaY === 0 ) { delta = deltaX * -1; }
}

// Webkit
if ( orgEvent.wheelDeltaY !== undefined ) { deltaY = orgEvent.wheelDeltaY; }
if ( orgEvent.wheelDeltaX !== undefined ) { deltaX = orgEvent.wheelDeltaX * -1; }
// No change actually happened, no reason to go any further
if ( deltaY === 0 && deltaX === 0 ) { return; }

// Need to convert lines and pages to pixels if we aren't already in pixels
// There are three delta modes:
// * deltaMode 0 is by pixels, nothing to do
// * deltaMode 1 is by lines
// * deltaMode 2 is by pages
if ( orgEvent.deltaMode === 1 ) {
var lineHeight = $.data(this, 'mousewheel-line-height');
delta *= lineHeight;
deltaY *= lineHeight;
deltaX *= lineHeight;
} else if ( orgEvent.deltaMode === 2 ) {
var pageHeight = $.data(this, 'mousewheel-page-height');
delta *= pageHeight;
deltaY *= pageHeight;
deltaX *= pageHeight;
}

// Look for lowest delta to normalize the delta values
absDelta = Math.abs(delta);
if ( !lowestDelta || absDelta < lowestDelta ) { lowestDelta = absDelta; }
absDeltaXY = Math.max(Math.abs(deltaY), Math.abs(deltaX));
if ( !lowestDeltaXY || absDeltaXY < lowestDeltaXY ) { lowestDeltaXY = absDeltaXY; }
// Store lowest absolute delta to normalize the delta values
absDelta = Math.max( Math.abs(deltaY), Math.abs(deltaX) );

// Get a whole value for the deltas
fn = delta > 0 ? 'floor' : 'ceil';
delta = Math[fn](delta / lowestDelta);
deltaX = Math[fn](deltaX / lowestDeltaXY);
deltaY = Math[fn](deltaY / lowestDeltaXY);
if ( !lowestDelta || absDelta < lowestDelta ) {
lowestDelta = absDelta;

// Adjust older deltas if necessary
if ( shouldAdjustOldDeltas(orgEvent, absDelta) ) {
lowestDelta /= 40;
}
}

// Adjust older deltas if necessary
if ( shouldAdjustOldDeltas(orgEvent, absDelta) ) {
// Divide all the things by 40!
delta /= 40;
deltaX /= 40;
deltaY /= 40;
}

// Get a whole, normalized value for the deltas
delta = Math[ delta >= 1 ? 'floor' : 'ceil' ](delta / lowestDelta);
deltaX = Math[ deltaX >= 1 ? 'floor' : 'ceil' ](deltaX / lowestDelta);
deltaY = Math[ deltaY >= 1 ? 'floor' : 'ceil' ](deltaY / lowestDelta);

// Add information to the event object
event.deltaX = deltaX;
event.deltaY = deltaY;
event.deltaFactor = lowestDelta;
// Go ahead and set deltaMode to 0 since we converted to pixels
// Although this is a little odd since we overwrite the deltaX/Y
// properties with normalized deltas.
event.deltaMode = 0;

// Add event and delta to the front of the arguments
args.unshift(event, delta, deltaX, deltaY);

// Clearout lowestDelta after sometime to better
// handle multiple device types that give different
// a different lowestDelta
// Ex: trackpad = 3 and mouse wheel = 120
if (nullLowestDeltaTimeout) { clearTimeout(nullLowestDeltaTimeout); }
nullLowestDeltaTimeout = setTimeout(nullLowestDelta, 200);

return ($.event.dispatch || $.event.handle).apply(this, args);
}

}));
function nullLowestDelta() {
lowestDelta = null;
}

function shouldAdjustOldDeltas(orgEvent, absDelta) {
// If this is an older event and the delta is divisable by 120,
// then we are assuming that the browser is treating this as an
// older mouse wheel event and that we should divide the deltas
// by 40 to try and get a more usable deltaFactor.
// Side note, this actually impacts the reported scroll distance
// in older browsers and can cause scrolling to be slower than native.
// Turn this off by setting $.event.special.mousewheel.settings.adjustOldDeltas to false.
return special.settings.adjustOldDeltas && orgEvent.type === 'mousewheel' && absDelta % 120 === 0;
}

}));
10 changes: 6 additions & 4 deletions sculptgl.js
View file
Expand Up @@ -85,9 +85,9 @@ SculptGL.prototype = {
{
self.onMouseUp(event);
});
$canvas.mousewheel(function (event, delta)
$canvas.mousewheel(function (event)
{
self.onMouseWheel(event, delta);
self.onMouseWheel(event);
});
$canvas.mousemove(function (event)
{
Expand Down Expand Up @@ -473,11 +473,13 @@ SculptGL.prototype = {
},

/** Mouse wheel event */
onMouseWheel: function (event, delta)
onMouseWheel: function (event)
{
event.stopPropagation();
event.preventDefault();
this.camera_.zoom(delta / 100.0);
var dy = event.deltaY;
dy = dy > 1.0 ? 1.0 : dy < -1.0 ? -1.0 : dy;
this.camera_.zoom(dy * 0.02);
this.render();
},

Expand Down

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