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CSS3 PIE Forums - View topic - Misaligned background-image in IE7
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Reply to topic  [ 7 posts ] 
 Misaligned background-image in IE7 
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Joined: Thu Aug 05, 2010 12:51 pm
Posts: 12
Post Misaligned background-image in IE7


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Tue Sep 14, 2010 2:29 pm
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Joined: Wed Jul 14, 2010 11:46 am
Posts: 1452
Post Re: Misaligned background-image in IE7
This problem has been discussed before, here: viewtopic.php?f=3&t=24

It appears there is some sort of rounding error that makes the clipping get a pixel off in some circumstances. I haven't had a chance to find the pattern yet; if anyone is willing to help that would be great. I'm guessing it's a combination of the image size and its position within the background area.


Tue Sep 14, 2010 7:53 pm
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Joined: Thu Aug 05, 2010 12:51 pm
Posts: 12
Post Re: Misaligned background-image in IE7


Tue Sep 14, 2010 8:13 pm
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Joined: Wed Jul 14, 2010 11:46 am
Posts: 1452
Post Re: Misaligned background-image in IE7
Yeah your exact symptoms are slightly different but they seem like they're probably related to me, based on how PIE implements non-repeated background images. In VML there is no such thing as a non-repeated background, so PIE draws a repeated background and then clips it at appropriate lengths from the left, right, top, and bottom. It appears that in some cases either the clipping or the positioning of the image is off by a pixel in one direction or another.

That other post was specifically for IE8 but I've seen it happen in IE7 too; it seems to usually happen in one or the other but not both, which indicates a difference in how the 2 versions are calculating things.


Wed Sep 15, 2010 8:28 am
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Joined: Tue Nov 09, 2010 5:30 am
Posts: 2
Post Re: Misaligned background-image in IE7


Tue Nov 09, 2010 5:33 am
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Joined: Tue Nov 09, 2010 5:30 am
Posts: 2
Post Re: Misaligned background-image in IE7
Changed all the bg images to be 45x45 pixels instead of 43x43 and now they look fine.
Just added a border of ttransparent pixels basically..


Tue Nov 09, 2010 5:52 am
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Joined: Thu Nov 18, 2010 5:52 am
Posts: 7
Post Re: Misaligned background-image in IE7
I too am having this issue Jason.
It only seems apparent in IE7 for me. IE6, IE8 and IE9 seem fine.


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