[Webkit-unassigned] [Bug 196025] New: Remove the SVG tear off objects for SVGColorAnimator

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=196025

            Bug ID: 196025
           Summary: Remove the SVG tear off objects for SVGColorAnimator
           Product: WebKit
           Version: WebKit 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

SVG attributes like "fill" and "stroke" do not have reflecting properties in SVGElement but they are animatable by SMIL. Since there is no animated properties for these attributes, a temporary variable must be created and initialized with the attribute value. This The value of this variable is progressed during the animation interval. The new progressed value has to be pushed to SVGElementRareData during the animation. When animation stops, the attribute and its animated value is removed from SVGElementRareData.

Because the attribute can be animated by multiple animators, all the multiple animators must reference the same temporary variable. A new animator named SVGColorAnimator will be created. The creator SVGPropertyAnimatorCreator will keep a RefCounted object for the temporary variable in a HashMap which is indexed by the attribute name. A new entry is created and appended to this HashMap when the first animator is created. An existing entry will be removed when the last animator is removed.

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