this is just an undocumented class that shows how you can get the
filesize of a file in a loaderqueue
without completely loading the file (I kill the further loading once
sizxe is obtained).
I only use this class once to get the totalbytes.
After that I usuyally hard-code this result in the rest off my app.
Here I get the total combined filesizes from a loaderQueue object which
holds
the url for every "image" or clip to load.
This is just to give you an idea. the way I present the code is nt
copy-paste-able.
______________________________________________________
// first builds the loaderQueue object !!!! // loaderQueue[index_ID].url
private function checkFileSizes(){
//processLoaderQueue()
var startTime=getTimer()
var _CLASS=classHook;
var FS:Array=new Array()
var index_ID=0;
for (index_ID; index_ID < loaderQueue.length; index_ID++){
FS[index_ID]=new getFileSize() //!!!!!!!!!!!!!!!!!!!!! check down
FS[index_ID].ID=index_ID
FS[index_ID].onSize=function(){
if(this.size==-1){
trace("error getting filesize")
}else{
_CLASS.allFilesBytesTotal+=this.size
}
_CLASS.loaderQueue[this.ID].size=this.size
_CLASS.totalChekedFileSizes++
if(_CLASS.totalChekedFileSizes==_CLASS.loaderQueue.length){
var loadTime=(getTimer()-startTime)/1000
dbg.dbg('totalChekedFileSizes: ' +
_CLASS.totalChekedFileSizes+' in '+loadTime+' seconds')
dbg.dbg("FILESIZE
"+(_CLASS.allFilesBytesTotal/1048576)+" MB / "+_CLASS.allFilesBytesTotal)
_CLASS.processLoaderQueue()
}
}
FS[index_ID].url=loaderQueue[index_ID].url
}
}
_______________________________________________________-
class nl.latcho.util.file.getFileSize extends MovieClip{
private var classRoot:getFileSize;
private var mediaURL:String=null;
private var mediaSize:Number=null;
private var temp_mc:MovieClip;
private var mc_loader:MovieClipLoader
private var loadListener:Object;
public var onSize:Function;
public function getFileSize(){
classRoot=this;
}
public function set url(URL_str:String){
if(temp_mc==null){
//creates temporary mc container for MovieClipLoader with
unique random name;
var
temp_mc_str:String="fileSizeCheckTmp"+random(100000)+"-"+random(100000)+"-"+random(100000)+"_mc"
temp_mc=_root.createEmptyMovieClip(temp_mc_str,_root.getNextHighestDepth())
temp_mc._visible=false
temp_mc._x=temp_mc._y=-3333
}
mediaURL=URL_str;
checkSize()
}//endd set url
public function get size():Number{
return mediaSize;
}
private function checkSize(){
if(mediaURL){
var CR:getFileSize=classRoot;
mc_loader=new MovieClipLoader()
loadListener=new Object()
mc_loader.addListener(loadListener);
loadListener.onLoadProgress=function(targ_mc:MovieClip,curBytes:Number,ttlBytes:Number){
CR.stopLoading(targ_mc)
CR.mediaSize=ttlBytes;
CR.mediaSize=ttlBytes;
//trace("CHECKEDFILES:"+targ_mc+"size:"+ttlBytes+"
url:"+CR.mediaURL)
CR.onSize(); // call - for the user to define:
remoteFileSize.onSize=function(){myMediaSize=this.size}
delete this;
}
loadListener.onLoadError=function(targ_mc:MovieClip){
CR.stopLoading(targ_mc)
//trace("CHECKEDFILES:"+targ_mc+"size:"+ttlBytes+"
url:"+CR.mediaURL)
CR.mediaSize=-1
CR.onSize(); // call - for the user to define:
remoteFileSize.onSize=function(){myMediaSize=this.size}
trace("remoteFileSize loadError:size=-1 :"+ CR.mediaURL)
delete this;
}
loadListener.onLoadComplete=function(targ_mc:MovieClip){
trace("COMPLETED [remoteFileSize/checkSize]:"+targ_mc+ "
this should hardly happen, only if file is small or cached or local")
}
mc_loader.loadClip(mediaURL,temp_mc)
}else{
trace("remoteFileSize: no url specified")
}
}
private function stopLoading(targ_mc){
mc_loader.removeListener(loadListener)
mc_loader.unloadClip(targ_mc)
temp_mc.removeMovieClip()
}
}//end remoteFileSize
Sascha Balkau wrote:
Hi Adrian,
thanks for the idea but this approach will not work in my case because
the images are loaded sequencially. If one image is finished loading,
my class starts loading the next and so on, one after one. And the
amount of images varies (the image filenames are fetched from a XML
file).
I'm now defining a segmentWidth by dividing the full progressbar width
by the amount of images that are going to be loaded. That gives me the
100% for one image on the whol bar. I just haven't figured out yet how
to make it work so that the bar doesn't start from 0 at every image.
Any other idea?
Sascha
----- Original Message ----- From: "Adrian Park" <[EMAIL PROTECTED]>
To: "Flashcoders mailing list" <[email protected]>
Sent: Sunday, March 12, 2006 3:24 AM
Subject: Re: [Flashcoders] Loading several images with one progressbar?
Say you have 3 images loading, use something like this:
var bytesLoaded:Number = 0;
var bytesTotal:Number = 0;
bytesLoaded += image1.getBytesLoaded();
bytesTotal += image1.getBytesTotal();
bytesLoaded += image2.getBytesLoaded();
bytesTotal += image2.getBytesTotal();
bytesLoaded += image3.getBytesLoaded();
bytesTotal += image3.getBytesTotal();
var percentageLoaded:Number = (bytesLoaded/bytesTotal) * 100;
There may be ways to optimise this code depending on your
circumstances (e.g.
just calculate bytesTotal once and reuse it) but this shows the basic
idea.
Adrian P.
On 3/11/06, Sascha Balkau <[EMAIL PROTECTED]> wrote:
Hi,
this is probably an old hat but I can't get it right. I want to display
the
load progress of several images with one progress bar. How do I
calculate
the percentage of the bar?
Thanks alot,
Sascha
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http://training.figleaf.com
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