[Webkit-unassigned] [Bug 53922] New: Web Inspector: add screen snapshots for each timeline paint event

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=53922

           Summary: Web Inspector: add screen snapshots for each timeline
                    paint event
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: UNCONFIRMED
          Severity: Enhancement
          Priority: P2
         Component: Web Inspector
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: bmcquade at google.com
                CC: timothy at apple.com, rik at webkit.org, keishi at webkit.org,
                    pmuellr at yahoo.com, joepeck at webkit.org,
                    pfeldman at chromium.org, yurys at chromium.org,
                    bweinstein at apple.com, apavlov at chromium.org,
                    loislo at chromium.org


The timeline is a fantastic addition to web inspector. One thing that'd make it even more useful for me is to have screen snapshots for each paint event. Currently it's hard for me to tell if a "paint" just painted one pixel, the top banner, or the entire page. I do get a paint dimensions but it's not always obvious what was within those dimensions at the time of the paint event. Having a low-res snapshot that shows the entire page as well as the changed region (for instance, gray out/fade the entire page, and show the newly painted region without being faded) in order to understand what the whole page looks like as well as what changed during that paint event would be a great addition to this tool.

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