313178 - canvas drawWindow fails to draw anything when window is scrolled past a certain point

Status: RESOLVED WORKSFORME

(Core :: Graphics: Canvas2D, defect)

Description

[(not currently active) Ted Mielczarek]

See attached testcase.  If the window is scrolled past 299, and you call
cx.drawWindow(w,0,0,300,300,"rgb(255,255,255)");  nothing is drawn in the canvas.

This breaks the usefulness of drawWindow, although you can work around it by
increasing the height of the area you draw.  For example:

cx.drawWindow(w,0,0,300,w.innerHeight+1,"rgb(255,255,255)");

Comment 1

[(not currently active) Ted Mielczarek]

Attachment: Scroll window and try to draw it

Testcase showing drawWindow behavior (requires UniversalBrowserRead)

Comment 2

[(not currently active) Ted Mielczarek]

Looks broken on trunk too.

Comment 3

[Robert O'Callahan (:roc) (email my personal email if necessary)]

Actually, this works for me on trunk. Could it be Windows only?

Comment 4

[(not currently active) Ted Mielczarek]

I just tested with
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9a1) Gecko/20051020 Firefox/1.6a1
and it still doesn't work for me.  Are you using a tinderbox build or your own?

Comment 5

[Robert O'Callahan (:roc) (email my personal email if necessary)]

It's my own build, but it's not patched.

Comment 6

[Chris Thomas (CTho) [formerly [e-mail] [e-mail]]]

I can reproduce this.

Comment 7

[(not currently active) Ted Mielczarek]

Attachment: Scroll window and try to draw it (without cnn)

Less CNN, more solid color div.  Same bug.

Comment 8

[(not currently active) Ted Mielczarek]

This WFM in Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a1) Gecko/20060130 Firefox/1.6a1

I bet frame display lists fixed it.

Comment 9

[Dave Townsend [:mossop]]

Im not sure it was actually since this appears to be fixed on 1.8.1 branch as well as trunk. Anyway thats useful info for those that need it.

Comment 10

[Mark Smith [:mcs]]

(In reply to comment #9)
> Im not sure it was actually since this appears to be fixed on 1.8.1 branch as
> well as trunk. Anyway thats useful info for those that need it.

Was this very recently fixed on the branch (that seems unlikely to me)?  I still see the problem in FF 2.0.0.3 on WinXP.