[Webkit-unassigned] [Bug 44426] New: [Images] Fix related to image down sampling in cairo port

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=44426

           Summary: [Images] Fix related to image down sampling in cairo
                    port
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Images
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: k.kosacki at samsung.com


As can be seen on www.ask.com when using Cairo port, the images are shown incorrectly. Ask.com uses a specific way of showing images - each image is in fact a part of a single large one - appropriate part is shown using absolute positioning. In cairo, positioning of the big image was broken due to down sampling. I ported some code from OpenVG (from ImageOpenVG.cpp) - adjusting source rectangle when down sampling is used. Most part (related to adjustSourceRectForDownSampling function) is just copied, small adjustment to call have been made. I will provide the fix shortly.

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