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List:       webkit-unassigned
Subject:    [Webkit-unassigned] [Bug 141116] New: Mousemove event is not firing	as intended
From:       bugzilla-daemon () webkit ! org
Date:       2015-01-31 15:28:59
Message-ID: bug-141116-2851 () https ! bugs ! webkit ! org/
[Download RAW message or body]

--1422718148.aE650.22879
Date: Sat, 31 Jan 2015 07:29:08 -0800
MIME-Version: 1.0
Content-Type: text/plain

https://bugs.webkit.org/show_bug.cgi?id=141116

            Bug ID: 141116
           Summary: Mousemove event is not firing as intended
    Classification: Unclassified
           Product: WebKit
           Version: 420+
          Hardware: PC
                OS: Windows 8
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: HTML Events
          Assignee: webkit-unassigned@lists.webkit.org
          Reporter: wowmotty@gmail.com

Created attachment 245781
  --> https://bugs.webkit.org/attachment.cgi?id=245781&action=review
CPU Profile of 12 image demo

I apologize in advance for not being able to determine the exact issue here, or \
provide a reduced test case.

Overview: Essentially, this is was found while using the jQuery AnythingZoomer \
plugin. There is a significant delay (2-3 seconds) that is introduced when trying to \
position a div containing more than 10 stacked images under the cursor; with 10 or \
less images the behavior is as expected. This issue does not occur in Firefox, Opera \
or IE11 (I didn't test in older IE versions).

Here is a demo of the plugin behaving as expected (10 images in large container): \
http://jsfiddle.net/5j354atc/3/ Here is a demo of the huge delay (12 images in large \
container): http://jsfiddle.net/5j354atc/2/

Steps to Reproduce:
1) Load the demo; there is an expected initialization delay of a second or two.
2) Move the mouse anywhere over the map.
3) Notice how long it takes for the zoom window to appear under the mouse.

Actual Results:
In the 12 image demo, I ran and profile and examined the flame graph (CPU profile \
attached). I noticed that jQuery was not receiving any mousemove events

-- 
You are receiving this mail because:
You are the assignee for the bug.
--1422718148.aE650.22879
Date: Sat, 31 Jan 2015 07:29:08 -0800
MIME-Version: 1.0
Content-Type: text/html

<html>
    <head>
      <base href="https://bugs.webkit.org/" />
    </head>
    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Mousemove event is not firing as intended"
   href="https://bugs.webkit.org/show_bug.cgi?id=141116">141116</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Mousemove event is not firing as intended
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>WebKit
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>420+
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>PC
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Windows 8
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>Normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P2
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>HTML Events
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>webkit-unassigned&#64;lists.webkit.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>wowmotty&#64;gmail.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=245781" \
name="attach_245781" title="CPU Profile of 12 image demo">attachment 245781</a> <a \
href="attachment.cgi?id=245781&amp;action=edit" title="CPU Profile of 12 image \
demo">[details]</a></span> CPU Profile of 12 image demo

I apologize in advance for not being able to determine the exact issue here, or \
provide a reduced test case.

Overview: Essentially, this is was found while using the jQuery AnythingZoomer \
plugin. There is a significant delay (2-3 seconds) that is introduced when trying to \
position a div containing more than 10 stacked images under the cursor; with 10 or \
less images the behavior is as expected. This issue does not occur in Firefox, Opera \
or IE11 (I didn't test in older IE versions).

Here is a demo of the plugin behaving as expected (10 images in large container): <a \
href="http://jsfiddle.net/5j354atc/3/">http://jsfiddle.net/5j354atc/3/</a> Here is a \
demo of the huge delay (12 images in large container): <a \
href="http://jsfiddle.net/5j354atc/2/">http://jsfiddle.net/5j354atc/2/</a>

Steps to Reproduce:
1) Load the demo; there is an expected initialization delay of a second or two.
2) Move the mouse anywhere over the map.
3) Notice how long it takes for the zoom window to appear under the mouse.

Actual Results:
In the 12 image demo, I ran and profile and examined the flame graph (CPU profile \
attached). I noticed that jQuery was not receiving any mousemove events</pre>  </div>
      </p>
      <hr>
      <span>You are receiving this mail because:</span>
      
      <ul>
          <li>You are the assignee for the bug.</li>
      </ul>
    </body>
</html>
--1422718148.aE650.22879--



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