[Webkit-unassigned] [Bug 123886] New: [CSSRegions] Unable to scroll a scrollable container for regions using mouse wheel

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=123886

           Summary: [CSSRegions] Unable to scroll a scrollable container
                    for regions using mouse wheel
           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: mihnea at adobe.com
                CC: WebkitBugTracker at adobe.com
            Blocks: 57312


Assume you have the following case:

<div id="container" style="overflow: auto">
    <!-- content to be flowed in regions -->
    <div id="article" style="-webkit-flow-into: flow"></div>

    <!-- regions that will fragment the content -->
    <div id="region" style="-webkit-flow-from: flow"></div>
    <div id="region2" style="-webkit-flow-from: flow"></div>
    <div id="region3" style="-webkit-flow-from: flow"></div>
    <div id="region4" style="-webkit-flow-from: flow"></div>
</div>

Assume that there is enough content in the flow to fill the regions and the size of the container is less than the size of regions so that the container gets vertical scrollbar.

Case1. If the mouse cursor is over the flow thread fragmented content inside a region, the user is unable to scroll the content inside the container.

Case2. However, if the mouse is outside the flow thread content but still inside the container, then the user is able to scroll the container content.

There *should be* a possibility to scroll the container content even when the mouse cursor is over the flow thread content in regions. (Case1)

-- 
Configure bugmail: https://bugs.webkit.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.