[Webkit-unassigned] [Bug 97695] New: Add optional keywords 'luminance'/'alpha' to 'mask-image' property

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=97695

           Summary: Add optional keywords 'luminance'/'alpha' to
                    'mask-image' property
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: krit at webkit.org
                CC: hyatt at apple.com
            Blocks: 95389


The 'mask-image' property has the new optional keywords 'luminance' and 'alpha' to differ between the masking type. Without the argument, or with 'alpha', the transparency level is chosen. For 'luminance' the luminance value is chosen. This is backwards compatible with WebKit's definition of '-webkit-mask-image'.

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