2013-03-14 12:45:57 +08:00
|
|
|
(function($){var defaultSettings={wheelSpeed:10,wheelPropagation:false};$.fn.perfectScrollbar=function(suppliedSettings,option){var settings=$.extend(true,{},defaultSettings);if(typeof suppliedSettings==="object"){$.extend(true,settings,suppliedSettings)}else{option=suppliedSettings}if(option==="update"){if($(this).data("perfect_scrollbar_update")){$(this).data("perfect_scrollbar_update")()}return $(this)}else if(option==="destroy"){if($(this).data("perfect_scrollbar_destroy")){$(this).data("perfect_scrollbar_destroy")()}return $(this)}if($(this).data("perfect_scrollbar")){return $(this).data("perfect_scrollbar")}var $this=$(this).addClass("ps-container"),$content=$(this).children(),$scrollbar_x=$("<div class='ps-scrollbar-x'></div>").appendTo($this),$scrollbar_y=$("<div class='ps-scrollbar-y'></div>").appendTo($this),container_width,container_height,content_width,content_height,scrollbar_x_width,scrollbar_x_left,scrollbar_x_bottom=parseInt($scrollbar_x.css("bottom")),scrollbar_y_height,scrollbar_y_top,scrollbar_y_right=parseInt($scrollbar_y.css("right"));var updateContentScrollTop=function(){var scroll_top=parseInt(scrollbar_y_top*content_height/container_height);$this.scrollTop(scroll_top);$scrollbar_x.css({bottom:scrollbar_x_bottom-scroll_top})};var updateContentScrollLeft=function(){var scroll_left=parseInt(scrollbar_x_left*content_width/container_width);$this.scrollLeft(scroll_left);$scrollbar_y.css({right:scrollbar_y_right-scroll_left})};var updateBarSizeAndPosition=function(){container_width=$this.width();container_height=$this.height();content_width=$content.outerWidth(false);content_height=$content.outerHeight(false);if(container_width<content_width){scrollbar_x_width=parseInt(container_width*container_width/content_width);scrollbar_x_left=parseInt($this.scrollLeft()*container_width/content_width)}else{scrollbar_x_width=0;scrollbar_x_left=0;$this.scrollLeft(0)}if(container_height<content_height){scrollbar_y_height=parseInt(container_height*container_height/content_height);scrollbar_y_top=parseInt($this.scrollTop()*container_height/content_height)}else{scrollbar_y_height=0;scrollbar_y_left=0;$this.scrollTop(0)}$scrollbar_x.css({left:scrollbar_x_left+$this.scrollLeft(),bottom:scrollbar_x_bottom-$this.scrollTop(),width:scrollbar_x_width});$scrollbar_y.css({top:scrollbar_y_top+$this.scrollTop(),right:scrollbar_y_right-$this.scrollLeft(),height:scrollbar_y_height})};var moveBarX=function(current_left,delta_x){var new_left=current_left+delta_x,max_left=container_width-scrollbar_x_width;if(new_left<0){scrollbar_x_left=0}else if(new_left>max_left){scrollbar_x_left=max_left}else{scrollbar_x_left=new_left}$scrollbar_x.css({left:scrollbar_x_left+$this.scrollLeft()})};var moveBarY=function(current_top,delta_y){var new_top=current_top+delta_y,max_top=container_height-scrollbar_y_height;if(new_top<0){scrollbar_y_top=0}else if(new_top>max_top){scrollbar_y_top=max_top}else{scrollbar_y_top=new_top}$scrollbar_y.css({top:scrollbar_y_top+$this.scrollTop()})};var bindMouseScrollXHandler=function(){var current_left,current_page_x;$scrollbar_x.bind("mousedown.perfect-scroll",function(e){current_page_x=e.pageX;current_left=$scrollbar_x.position().left;$scrollbar_x.addClass("in-scrolling");e.stopPropagation();e.preventDefault()});$(document).bind("mousemove.perfect-scroll",function(e){if($scrollbar_x.hasClass("in-scrolling")){moveBarX(current_left,e.pageX-current_page_x);updateContentScrollLeft();e.stopPropagation();e.preventDefault()}});$(document).bind("mouseup.perfect-scroll",function(e){if($scrollbar_x.hasClass("in-scrolling")){$scrollbar_x.removeClass("in-scrolling")}})};var bindMouseScrollYHandler=function(){var current_top,current_page_y;$scrollbar_y.bind("mousedown.perfect-scroll",function(e){current_page_y=e.pageY;current_top=$scrollbar_y.position().top;$scrollbar_y.addClass("in-scrolling");e.stopPropagation();e.preventDefault()});$(document).bind("mousemove.perfect-scroll",function(e){if($scrollbar_y.hasClass("in-scrolling")){moveBarY(current_top,e.pageY-current_page_y);updateContentScrollTop();e.stopPropagation();e.preventDe
|
