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bachir
2020-09-23 15:50:29 +02:00
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sites/all/modules/gui/jqplug/js/jquery.clicknscroll.v1.0.js
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/* ␍ * jQuery.clickNScroll v1.0␍ *␍ * Copyright (c) 2010 Joshua Faulkenberry␍ * Dual licensed under the MIT and GPL licenses.␍ * Joshua Faulkenberry␍ *␍ * $Date: 2010-10-25 18:55:27 -0700 (Mon, 25 Oct 2010) $␍ * $Revision: 5 $␍ */␍␍(function($){ ␍ ␍ jQuery.extend({␍ mouse: {␍ x: 0,␍ y: 0␍ },␍ clickNScroll: {␍ mousedown:false,␍ emaX: 0,␍ emaY: 0␍ } ␍ });␍ ␍ jQuery.fn.extend({␍ clickNScroll: function(options) {␍ var ops = $.extend({␍ allowHiliting:false,␍ acceleration:.65,␍ deceleration:.85,␍ decelRate:64,␍ reverse:false,␍ rightMouse:false,␍ allowThrowing:true,␍ throwOnOut:true␍ }, options || {});␍ return this.each(function(){ ␍ var $this = $(this).data("options", ops); ␍ if(!ops.allowHiliting) {␍ if (jQuery.browser.msie) {␍ $this.get(0).onselectstart = function () { return false; };␍ } ␍ else {␍ $this.get(0).onmousedown = function(e){e.preventDefault()}␍ } ␍ }␍ $this.mousedown(function(e) {␍ $.clickNScroll.mousedown = $this;␍ }).mouseup(function(e) { ␍ if(ops.allowThrowing) sling($(this)); ␍ $.clickNScroll.mousedown = false;␍ }).mouseout(function(e) { ␍ var from = e.relatedTarget || e.toElement;␍ if (!from || from.nodeName == "HTML") {␍ if($.clickNScroll.mousedown && ops.allowThrowing && ops.throwOnOut) sling($(this)); ␍ $.clickNScroll.mousedown = false;␍ }␍ }) ␍ });␍ } ␍ });␍ ␍ function sling($this) { ␍ var ops = $this.data("options"), ␍ changeX = ($.clickNScroll.emaX)*ops.deceleration, ␍ changeY = ($.clickNScroll.emaY)*ops.deceleration; ␍ if((changeX < .01 && changeX > -.01) || (changeY < .01 && changeY > -.01)) {return;} ␍ move($this, changeX, changeY); ␍ setTimeout(function() {␍ sling($this);␍ }, 1000/ops.decelRate); ␍ }␍ ␍ function move($this, changeX, changeY) { ␍ if(($.clickNScroll.emaX < 0 && changeX > 0) || ($.clickNScroll.emaX > 0 && changeX < 0)) $.clickNScroll.emaX = 0;␍ if(($.clickNScroll.emaY < 0 && changeY > 0) || ($.clickNScroll.emaY > 0 && changeY < 0)) $.clickNScroll.emaY = 0;␍ ␍ var ops = $this.data("options"), ␍ amntX = ops.acceleration * changeX + (1 - ops.acceleration) * $.clickNScroll.emaX,␍ amntY = ops.acceleration * changeY + (1 - ops.acceleration) * $.clickNScroll.emaY,␍ scrollRight = $this[0].scrollWidth ? $this[0].scrollWidth - $this[0].clientWidth : $this[0].body.scrollWidth - $this[0].body.clientWidth,␍ scrollBottom = $this[0].scrollHeight ? $this[0].scrollHeight - $this[0].clientHeight : $this[0].body.scrollHeight - $this[0].body.clientHeight; ␍␍ if(($this.scrollLeft() <= 0 && changeX <= 0) || ($this.scrollLeft() >= scrollRight && changeX >= 0)) {} ␍ else $this.scrollLeft($this.scrollLeft() + (amntX));␍ if(($this.scrollTop() <= 0 && changeY <= 0) || ($this.scrollTop() >= scrollBottom && changeY >= 0)) {} ␍ else $this.scrollTop($this.scrollTop() + (amntY)); ␍ $.clickNScroll.emaX = amntX;␍ $.clickNScroll.emaY = amntY;␍ }␍ ␍ $(document).mousemove(function(e) { ␍ if($.clickNScroll.mousedown) { ␍ var $this = $.clickNScroll.mousedown,␍ ops = $this.data("options");␍ if(ops.rightMouse && e.button != 2) return;␍ else if(!ops.rightMouse && e.button == 2) return; ␍ var changeX = e.pageX - $.mouse.x, ␍ changeY = e.pageY - $.mouse.y; ␍ if(!ops.reverse) {␍ changeX = 0-changeX;␍ changeY = 0-changeY;␍ } ␍ move($this, changeX, changeY);␍ } ␍ $.mouse = {␍ x: e.pageX,␍ y: e.pageY␍ }; ␍ }); ␍ ␍})(jQuery);