538573 - Opening background tabs/links while zoomed and panned is broken

Status: VERIFIED FIXED

(Firefox for Android Graveyard :: Panning/Zooming, defect)

Description

[Mark Finkle (:mfinkle) (use needinfo?)]

STR:
1. Go to google news (other linked story sites will work too)
2. Pan down the page
3. Zoom in on a story
4. Ctrl+Click to open a link in a new tab

Actual Results:
* Screen goes full checkerboard
* After 2-3 secs (or if you pan) the screen will redraw
* Select the newly opened tab and you'll see that you are already panned way down the page.

Expected Results:
* No redrawing or checkerboarding occurs on the initial page (google news)
* Newly opened background tab content is at top/left, not panned down

I think there are at least two bugs here: 1. the checkerboarding on the initial page and 2. the panning on the opened background page.

Vivien and I think this call to scrollContentToBrowser is to blame:
http://mxr.mozilla.org/mobile-browser/source/chrome/content/browser.js#2915

scrollContentToBrowser only works on the active browser, not the background browser and endLoading for the background browser is calling it.

The patch in bug 537694 changes the initial page bug slightly: With the patch applied, the full screen does not checkerboard anymore, but the content is shifted to the left, causing a small checkerboard too. Also, the background page panning issue is unaffected by the patch.

Comment 1

[Vivien Nicolas (:vingtetun) (:21) - (NOT reading bugmails, needinfo? please)]

patch in bug 537694 resolve this problem.

Comment 2

[Mark Finkle (:mfinkle) (use needinfo?)]

Yes, this appears to be fixed by bug 537694

Comment 3

[Aakash Desai [:aakashd]]

verified FIXED on builds:
Mozilla/5.0 (X11; U; Linux armv7l; Nokia N900; en-US; rv:1.9.2pre) Gecko/20100119 Firefox/3.6pre Fennec/1.1a1pre

and

Mozilla/5.0 (X11; U; Linux armv6l; Nokia N8xx; en-US; rv:1.9.3a1pre) Gecko/20100119 Firefox/3.7a1pre Fennec/1.1a1pre