[Webkit-unassigned] [Bug 169396] New: Calculate the right sizeForDrawing for image async decoding taking ancestor transforms into account, including ancestor SVG transforms.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=169396

            Bug ID: 169396
           Summary: Calculate the right sizeForDrawing for image async
                    decoding taking ancestor transforms into account,
                    including ancestor SVG transforms.
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Images
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: sabouhallawa at apple.com

For async image decoding we have to decode for a specific size. Currently the request for async image decoding happens before the drawing starts. We can take the pageScaleFactor, the pageZoomFactor and the deviceScaleFactor into account easily. But the css and svg transformation both need more work to known before the drawing starts. Alternately the requests of async image decoding might be delayed till the drawing starts and all the transformations are applied to the graphics context.

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