版权归本博主，转载需注明出处。
【分析】
1、网页嵌入flash后会覆盖html dom 元素，使用wmode为transparent时可以解决覆盖问题，因为此时它已经透明了。
2、transparent带来另一个问题，鼠标滚轮控制不了flash中的滚动条。
3、思路：通过js捕获鼠标滚轮事件，js调用flash方法传递滚轮->flash组件调用滚轮事件传递的参数。
【处理】
/**********鼠标滚轮*********/
function addMouseWheelListener(){
var flash = $FlexPaper('documentViewer');
var ua = navigator.userAgent;
console.log(ua.indexOf("Firefox"));
if(ua.indexOf("Firefox") > -1){
flash.addEventListener('DOMMouseScroll',onWheelZoom,false);
}else if(ua.indexOf("MSIE") == -1){
flash.addEventListener('mousewheel',false);
}else{
flash.attachEvent('onmousewheel',onWheelZoom);
}
flash.attachEvent('onmousewheel',onWheelZoom);
}
function onWheelZoom(event){
var app = $FlexPaper('documentViewer');
if (app) {
var o= {delta: event.wheelDelta};
$FlexPaper('documentViewer').jsWheelZoom(o);
}
}
2、在FlexPaper源码入口的init方法中添加如下监听：
//滚轮控制滚动条
ExternalInterface.addCallback("jsWheelZoom",jsWheelZoom);
ExternalInterface.call("addMouseWheelListener");
3、再实现两个方法：
/********滚轮事件实现************/
private function jsWheelZoom(o:Object):void {
var e:MouseEvent = new MouseEvent(MouseEvent.MOUSE_WHEEL,true);
e.delta = -(o.delta);
onWheelZoom(e);
}
private function onWheelZoom(e:MouseEvent):void {
if(e.delta>2)
{
this.FlexPaper.verticalScrollPosition += 1;
if(this.FlexPaper.verticalScrollPosition > this.FlexPaper.maxVerticalScrollPosition) {
this.FlexPaper.verticalScrollPosition = this.FlexPaper.maxVerticalScrollPosition
}
}
if(e.delta<-2) {
this.FlexPaper.verticalScrollPosition -= 1;
if(this.FlexPaper.verticalScrollPosition < 0) {
this.FlexPaper.verticalScrollPosition = 0;
}
}
//Alert.show("进来了！！！！！");
}
以上方法并不能完全使得Flexpaper的滚动条在各个浏览器下都能正常使用，于是有了下面的方法，把相应的JS操作写在Flexpaper的源码里面，而原来添加的两个鼠标事件去掉，初始化时加入以下代码：
@H_256_403@stage.addEventListener(MouseEvent.MOUSE_OVER,
@H_256_403@function(e: MouseEvent) : void {
@H_256_403@ ExternalInterface.call("eval","if(navigator.userAgent.indexOf ('Firefox')>0){var __on_flash_wheel=function(e){e.preventDefault(); e.stopPropagation();};window.addEventListener('DOMMouseScroll',__on_flash_wheel,false);}else{document.onmousewheel=function(){return false;};}");
@H_256_403@});
@H_256_403@stage.addEventListener(MouseEvent.MOUSE_OUT,"if (navigator.userAgent.indexOf('Firefox')>0){window.removeEventListener ('DOMMouseScroll',false);}else {document.onmousewheel=null;}");
@H_256_403@});
编译后替换FlexPaperViewer.swf文件，滚动条在各个浏览器都能正常浏览了！