2013-09-21 12:43:10 +02:00
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(function($){var abs=Math.abs,max=Math.max,min=Math.min,round=Math.round;function div(){return $('<div/>')}$.imgAreaSelect=function(img,options){var $img=$(img),imgLoaded,$box=div(),$area=div(),$border=div().add(div()).add(div()).add(div()),$outer=div().add(div()).add(div()).add(div()),$handles=$([]),$areaOpera,left,top,imgOfs={left:0,top:0},imgWidth,imgHeight,$parent,parOfs={left:0,top:0},zIndex=0,position='absolute',startX,startY,scaleX,scaleY,resize,minWidth,minHeight,maxWidth,maxHeight,aspectRatio,shown,x1,y1,x2,y2,selection={x1:0,y1:0,x2:0,y2:0,width:0,height:0},docElem=document.documentElement,ua=navigator.userAgent,$p,d,i,o,w,h,adjusted;function viewX(x){return x+imgOfs.left-parOfs.left}function viewY(y){return y+imgOfs.top-parOfs.top}function selX(x){return x-imgOfs.left+parOfs.left}function selY(y){return y-imgOfs.top+parOfs.top}function evX(event){return event.pageX-parOfs.left}function evY(event){return event.pageY-parOfs.top}function getSelection(noScale){var sx=noScale||scaleX,sy=noScale||scaleY;return{x1:round(selection.x1*sx),y1:round(selection.y1*sy),x2:round(selection.x2*sx),y2:round(selection.y2*sy),width:round(selection.x2*sx)-round(selection.x1*sx),height:round(selection.y2*sy)-round(selection.y1*sy)}}function setSelection(x1,y1,x2,y2,noScale){var sx=noScale||scaleX,sy=noScale||scaleY;selection={x1:round(x1/sx||0),y1:round(y1/sy||0),x2:round(x2/sx||0),y2:round(y2/sy||0)};selection.width=selection.x2-selection.x1;selection.height=selection.y2-selection.y1}function adjust(){if(!imgLoaded||!$img.width())return;imgOfs={left:round($img.offset().left),top:round($img.offset().top)};imgWidth=$img.innerWidth();imgHeight=$img.innerHeight();imgOfs.top+=($img.outerHeight()-imgHeight)>>1;imgOfs.left+=($img.outerWidth()-imgWidth)>>1;minWidth=round(options.minWidth/scaleX)||0;minHeight=round(options.minHeight/scaleY)||0;maxWidth=round(min(options.maxWidth/scaleX||1<<24,imgWidth));maxHeight=round(min(options.maxHeight/scaleY||1<<24,imgHeight));if($().jquery=='1.3.2'&&position=='fixed'&&!docElem['getBoundingClientRect']){imgOfs.top+=max(document.body.scrollTop,docElem.scrollTop);imgOfs.left+=max(document.body.scrollLeft,docElem.scrollLeft)}parOfs=/absolute|relative/.test($parent.css('position'))?{left:round($parent.offset().left)-$parent.scrollLeft(),top:round($parent.offset().top)-$parent.scrollTop()}:position=='fixed'?{left:$(document).scrollLeft(),top:$(document).scrollTop()}:{left:0,top:0};left=viewX(0);top=viewY(0);if(selection.x2>imgWidth||selection.y2>imgHeight)doResize()}function update(resetKeyPress){if(!shown)return;$box.css({left:viewX(selection.x1),top:viewY(selection.y1)}).add($area).width(w=selection.width).height(h=selection.height);$area.add($border).add($handles).css({left:0,top:0});$border.width(max(w-$border.outerWidth()+$border.innerWidth(),0)).height(max(h-$border.outerHeight()+$border.innerHeight(),0));$($outer[0]).css({left:left,top:top,width:selection.x1,height:imgHeight});$($outer[1]).css({left:left+selection.x1,top:top,width:w,height:selection.y1});$($outer[2]).css({left:left+selection.x2,top:top,width:imgWidth-selection.x2,height:imgHeight});$($outer[3]).css({left:left+selection.x1,top:top+selection.y2,width:w,height:imgHeight-selection.y2});w-=$handles.outerWidth();h-=$handles.outerHeight();switch($handles.length){case 8:$($handles[4]).css({left:w>>1});$($handles[5]).css({left:w,top:h>>1});$($handles[6]).css({left:w>>1,top:h});$($handles[7]).css({top:h>>1});case 4:$handles.slice(1,3).css({left:w});$handles.slice(2,4).css({top:h})}if(resetKeyPress!==false){if($.imgAreaSelect.onKeyPress!=docKeyPress)$(document).unbind($.imgAreaSelect.keyPress,$.imgAreaSelect.onKeyPress);if(options.keys)$(document)[$.imgAreaSelect.keyPress]($.imgAreaSelect.onKeyPress=docKeyPress)}if(msie&&$border.outerWidth()-$border.innerWidth()==2){$border.css('margin',0);setTimeout(function(){$border.css('margin','auto')},0)}}function doUpdate(resetKeyPress){adjust();update(resetKeyPress);x1=viewX(selection.x1);y1=viewY(selection.y1);x2=viewX(selection.x2);y2=viewY(selection.y2)}function hide($elem,fn){options.fadeSpeed?$e
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