[Webkit-unassigned] [Bug 141725] New: SVG root viewBox transformation is not set correctly if the attribute 'viewBox' is omitted but the 'width' and 'height' are included.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=141725

            Bug ID: 141725
           Summary: SVG root viewBox transformation is not set correctly
                    if the attribute 'viewBox' is omitted but the 'width'
                    and 'height' are included.
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (Nightly build)
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: SVG
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: sabouhallawa at apple.com
                CC: zimmermann at kde.org

Created attachment 246767
  --> https://bugs.webkit.org/attachment.cgi?id=246767&action=review
Test case -- SVG root viewBox is omitted

Open the first test case in WebKit.

Results: The arrow shape is not scaled to fit in the SVG root css rectangle.
Expected: The arrow should fit in the SVG root css rectangle.

The svg root size = (50, 50) in SVG coordinates
And it is also = (32, 32) in css coordinates
So the svg root viewBox transformation = "scale(32/50, 32/50)"

The bug happens because the transformation in this case = the identity since the 'viewBox' attribute is omitted in the SVG root.

If the 'viewBox' attribute is included in the svg root, the bug does not happen. (see the second test case)

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