593698 - Aero Peek for minimized windows show the real window contents in the wrong location

Status: NEW

(Core :: Widget: Win32, defect)

Description

[Rob Arnold [:robarnold]]

I see two tabstrips when previewing a tab on a minimized window. The upper tabstrip seems to be the real one and we're drawing the previewed contents in the right place. I noticed this in today's nightly which has the d3d9 layers but I suspect that some recent widget changes may also be the likely cause of this regression.

Comment 1

[Jim Mathies [:jimm]]

WFM in

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b6pre) Gecko/20100904 Firefox/4.0b6pre

A screen shot might help. I'm using gdi.

Comment 2

[Rob Arnold [:robarnold]]

Attachment: Screenshot

Comment 3

[Rob Arnold [:robarnold]]

This is in
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b6pre) Gecko/20100905 Firefox/4.0b6pre
with GDI

Comment 4

[Asa Dotzler [:asa]]

I cannot reproduce this with Windows 7 in glass or basic Aero themes. Are there some additional steps besides minimizing the window?

Comment 5

[Rob Arnold [:robarnold]]

This only happens with D3D9 layers (10 untested). Every Firefox window exhibits this behavior with varying but consistent offsets.

Comment 6

[Jim Mathies [:jimm]]

(In reply to comment #5)
> This only happens with D3D9 layers (10 untested). Every Firefox window exhibits
> this behavior with varying but consistent offsets.

What are your layers settings Rob?

I've got 

layers.accelerate-all;true
layers.accelerate-none;false
layers.prefer-d3d9;true (for testing this bug)
layers.prefer-opengl;false

and

gfx.direct2d.disabled;true
(or)
gfx.direct2d.disabled;false


STT: 

1) set prefs
2) restart
3) open three tabs
4) minimize window
5) display live previews for each tab