[Webkit-unassigned] [Bug 7702] New: CSS background images don't print properly, they are shifted down

[bugzilla-daemon at opendarwin.org]

http://bugzilla.opendarwin.org/show_bug.cgi?id=7702

           Summary: CSS background images don't print properly, they are
                    shifted down
           Product: WebKit
           Version: 412
          Platform: Macintosh
        OS/Version: Mac OS X 10.4
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Printing
        AssignedTo: webkit-unassigned at opendarwin.org
        ReportedBy: sullivan at apple.com


This bug is also in Radar as <rdar://4469664>

* SUMMARY
When viewing a page in Safari which contains a background image defined by CSS,
the images appears correctly on screen, but shifted up/down from its original
position in print preview.

* STEPS TO REPRODUCE
1. Download the attached HTML and PNG.
2. Open bug.html in Safari.  You should see a table with 2 cells: the top one
has a background image.
3. File > Print...
4. Choose the "Safari" printer options in the Print dialog.
5. Make sure that "Print backgrounds" is checked.
6. Click "Preview".

* RESULTS
In comparing the Safari screen with the print preview, notice that the
background image behind "foo" has been shifted down roughly 7 pixels.  The
print preview should look exactly like the screen (with the exception of page
headers/footers).

* REGRESSION
I noticed this while trying to develop a print CSS for an existing page.  I
added the background image to give the table's head cells visual contrast from
the rest of its cells.  I tried specifying the background image position with
no luck.  I build a stripped-down web page and style to isolate the problem.  I
have attached that bare-bones file to this bug and used it to demonstrate the
problem.


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