Closed
Bug 12065
Opened 26 years ago
Closed 26 years ago
Fixed elements without background display ghosts of other screen sections
Categories
(Core Graveyard :: GFX, defect, P3)
Tracking
(Not tracked)
M12
People
(Reporter: BVoigt, Assigned: beard)
References
()
Details
Observed on: Windows NT4 SP5 (didn't check any others) Mozilla apprunner builds 19990727, 19990728, 19990729, 19990817 (didn't check any others) Does not occur in viewer: defaults to black background When a DIV using fixed positioning does not specify a background, the previous contents of the device context are used as the background. This is probably less a bug in the renderer itself than a failure to provide a appropriate default background. I would expect the page-background color to be used, although any solid color would be usable. The following code causes the Mozilla toolbar to be displayed within the fixed DIV: <div style="position: fixed; left: 0; top: 0; width: 50%; height: 400px; overflow: auto"> </div> EXAMPLES (Please note that these files are on my personal computer and may not be available at all times) http://ksu.kas.com/nsbug1.htm (screenshot http://ksu.kas.com/nsbug1.gif) Simplest possible case: DIV in document by itself. http://ksu.kas.com/nsbug1b.htm Added guilty code to a copy of bugzilla home page. http://ksu.kas.com/nsbug1c.htm (screenshot http://ksu.kas.com/nsbug1c.gif) More complex example in which another fixed DIV is first rendered, and then the contents overlaid. http://ksu.kas.com/nsbug1d.htm Demonstrates that LAYER causes the same problem. One possible fix would be to use the page background color as the default for fixed elements whenever no background is explicitly specified.
Assignee | ||
Updated•26 years ago
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Status: NEW → ASSIGNED
Assignee | ||
Comment 1•26 years ago
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Confirmed on Mac OS tip as of 8/31/99.
Assignee | ||
Updated•26 years ago
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Target Milestone: M12
Updated•26 years ago
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Status: ASSIGNED → RESOLVED
Closed: 26 years ago
Resolution: --- → DUPLICATE
Comment 2•26 years ago
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Known limitiation. Dup of bug 4209. *** This bug has been marked as a duplicate of 4209 ***
Updated•26 years ago
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Status: RESOLVED → VERIFIED
Comment 3•26 years ago
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Agreed. This is a duplicate of 4209.
Updated•16 years ago
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Product: Core → Core Graveyard
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Description
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