[Webkit-unassigned] [Bug 133110] New: [WK2] Fixed layout size of UIProcess isn't sync with WebProcess while viewport meta tag is changed.

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Tue May 20 00:41:08 PDT 2014


https://bugs.webkit.org/show_bug.cgi?id=133110

           Summary: [WK2] Fixed layout size of UIProcess isn't sync with
                    WebProcess while viewport meta tag is changed.
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit2
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: gyuyoung.kim at samsung.com


When viewport attribute is updated, WebPage::sendViewportAttributesChanged() changes fixed layout size of WebCore(ScrollView). However, it doesn't update fixed layout size with new fixed layout size for UIProcess. It can cause that UIProcess API (e.g. WKPageSetFixedLayoutSize()) can't change fixed layout size because WebPageProxy::m_fixedLayoutSize wasn't updated.

    void WebPage::sendViewportAttributesChanged()
    {
       ...
       // This also takes care of the relayout.
       setFixedLayoutSize(roundedIntSize(attr.layoutSize));
       ...
    }

    void WebPage::setFixedLayoutSize(const IntSize& size)
    {
        FrameView* view = mainFrameView();
        ...
        view->setFixedLayoutSize(size); => Change WebCore's fixed layout size !
        ...
    }



If WebPageProxy::m_fixedLayoutSize wasn't updated, WKPageSetFixedLayoutSize() can't update fixed layout size for WebCore.

    void WebPageProxy::setFixedLayoutSize(const IntSize& size)
    {
        ...
        if (size == m_fixedLayoutSize)
            return;

        m_fixedLayoutSize = size;
        m_process->send(Messages::WebPage::SetFixedLayoutSize(size), m_pageID);
    }

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