317124 - Canvas changes height when opacity changes.

Status: RESOLVED WORKSFORME

(Core :: Graphics: Canvas2D, defect)

Description

[Dave Townsend [:mossop]]

See the upcoming testcase.

When a canvas element has a border and has its opacity changed from 1 to <1 its height shrinks by the border height and does not return to normal when the opacity returns to 1.

If the opacity begins as <1 (even as 0.9999) the initial height is the same as the opacity 1 case but the height never drops.

Comment 1

[Dave Townsend [:mossop]]

Attachment: Testcase

Here is the testcase. The box is a canvas element. Moving the mouse over it will change it's opacity from 1.0 to 0.5.

Comment 2

[Peter van der Woude [:Peter6]]

Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8) Gecko/20051119 Firefox/1.5 ID:2005111903

confirmed

Comment 3

[Vladimir Vukicevic [:vlad] [:vladv] (needinfo me, slow to respond)]

Hrm, I don't think this is canvas itself; maybe roc has some input on what it could be?

Comment 4

[Vladimir Vukicevic [:vlad] [:vladv] (needinfo me, slow to respond)]

This looks like it's worksforme