Hi Tristan,
Today Tristan Koch wrote:
> Hi Tobias,
>
> > ImageLoader.js:202 (qooxdoo 1.4.2)
>
> Loads the image (unmanged, I suppose?) to determine its dimensions.
it is a chart generated on the server ...
> > and the second one from
> >
> > Appear.js:181 (qooxdoo 1.4.2)
>
> Not sure here but I guess the lookup of offsetWidth forces the
> browser to render (that is, paint the visual representation of
> the current document). But I'm surprised another request is made.
> Do you see log messages for the image in your HTTP server's log?
> Is the URL exactly identical?
yes the server gets two requests fro exactly the same chart. It
only happens when running the application on chrome ... firefox
only does one request ...
> > if I load a chart which I loaded before, the ImageLoader GET does
> > not happen, but the Appear GET does ...
>
> Thats because the dimensions of the image have already been determined.
hmmm I tried reproducing the problem with playground but there it
does not happen ...
// Create a button
var image = new qx.ui.basic.Image().set({
allowGrowX : true,
allowGrowY : true,
allowShrinkX : true,
allowShrinkY : true,
width: 300,
height: 400
});
this.getRoot().add(image,{left:0,top:0});
image.hide();
qx.html.Element.flush();
image.addListener('loaded',function(){image.show();});
image.addListener('appear',function(){this.debug("hello");});
var src = "http://oss.oetiker.ch/extopus/screenshot.png?rnd="+Math.random();
if (!qx.io.ImageLoader.isLoaded(src)){
image.setSource(src);
}
else {
image.setSource(src);
image.show();
}
> Regards
> Tristan
>
>
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--
Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland
http://it.oetiker.ch [email protected] ++41 62 775 9902 / sb: -9900
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BlackBerry® mobile platform with sessions, labs & more.
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