[Webkit-unassigned] [Bug 44083] SVGLocatable.getScreenCTM ignores scrolling

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=44083





--- Comment #5 from Mike Bostock <mbostock at cs.stanford.edu>  2010-08-24 23:42:55 PST ---
(In reply to comment #4)
> Notice how it stops at the first non-SVG element.

That's true for mode == NearestViewportScope (getCTM), but not mode == ScreenScope (getScreenCTM), where stopAtElement is 0 and it goes all the way to the root element.

I think what's needed is something like this at the end of computeCTM:

    if (mode == ScreenScope) {
        DOMWindow* window = element->ownerDocument()->defaultView();
        ctm = ctm.translate(window->scrollX(), window->scrollY());
    }

    return ctm;

Although I haven't thought through whether it should be translate or translateRight, yet. Or maybe -scrollX and -scrollY.

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