691225 - image/border redrawn on image resize in contenteditable div

Status: RESOLVED INCOMPLETE

(Core :: Graphics, defect)

Description

[Daniel Bates]

Attachment: Example

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_1) AppleWebKit/534.48.3 (KHTML, like Gecko) Version/5.1 Safari/534.48.3

Steps to reproduce:

Paste/drag-and-drop an image A into a contenteditable <div> then resize the image such that you make it smaller.

This issue is present in Mac Nightly 9.0a1 (2011-09-27) and Mac Firefox 6.0.2.


Actual results:

Rendering artifacts are seen as you resize the image. In particular, the image (as it appeared at the start of the drag) is still visible and the border associated with the image resize handle is repeatedly drawn as you resize the image.

It may be easier to reproduce this issue by resizing the image from either a bottom center or right-side resize handle (why?).


Expected results:

There shouldn't be any rendering artifacts as you resize the image regardless of the resize handle used to initiate the resize operation.

Comment 1

[Daniel Bates]

Attachment: Screen capture of rendering artifacts on resize

A screen capture demonstrating the issue using the Example page (attachment 564103 [details]) attached to this bug.

Notice the rendering artifacts as the image is resized.

Comment 2

[Alice0775 White]

Reproduced on Firefox4.0.1 to Nightly10.0a1

Regression window(cached m-c hourly):
Works:
http://hg.mozilla.org/mozilla-central/rev/a93c9118f16d
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b6pre) Gecko/20100902 Firefox/4.0b6pre ID:20100902105243
Fails:
http://hg.mozilla.org/mozilla-central/rev/886665dec3cb
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b6pre) Gecko/20100901 Firefox/4.0b6pre ID:20100902120235
Pushlog:
http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=a93c9118f16d&tochange=886665dec3cb

Comment 3

[Boris Zbarsky [:bzbarsky]]

Benoit, given that regression range, could you take a look please?

Comment 4

[Alice0775 White]

Triggered by:
f6916eb6b678	Robert O'Callahan — Bug 584494 - Regression: Transform rotation testcase performs significantly worse - r=dbaron

Comment 5

[Boris Zbarsky [:bzbarsky]]

ah, in that case ccing roc!

Comment 6

[u279076]

I am closing this bug as incomplete since I cannot reproduce it with the information provided. Please reopen this bug if you can still reproduce it and please provide updated info when doing so.