[Webkit-unassigned] [Bug 29365] New: Background images not freed when changing CSS classes
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Fri Sep 18 02:46:10 PDT 2009
https://bugs.webkit.org/show_bug.cgi?id=29365
Summary: Background images not freed when changing CSS classes
Product: WebKit
Version: 528+ (Nightly build)
Platform: PC
OS/Version: Linux
Status: UNCONFIRMED
Severity: Normal
Priority: P2
Component: CSS
AssignedTo: webkit-unassigned at lists.webkit.org
ReportedBy: j at dna.ie
If css is defined as follows:
.bg1 {
background-image: url(img1.jpg);
}
.bg2 {
background-image: url(img2.jpg);
}
And then you change the background on an element using:
document.getElementById('pagebg').className = "bg1";
or
document.getElementById('pagebg').className = "bg2";
The "old" image reference is not freed up. (Use of cache has been disabled)
If I change the image background using
document.getElementById('pagebg').style.backgroundImage = 'url(img1.jpg)';
or
document.getElementById('pagebg').style.backgroundImage = 'url(img2.jpg)';
The old image reference is correctly freed up.
I have put up pages to illustrate this behaviour:
The first use case (which caches the image) is at:
http://www.joelebeau.co.uk/testcssbg/index.htm
The 2nd use case is at:
http://www.joelebeau.co.uk/testcssbg/index2.htm
(In both pages the image loads/transitions are triggered by a key press)
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