904353 - primaryScreen.GetRect() on a background process seems to return CSS pixels instead of device pixels

Status: RESOLVED DUPLICATE of bug 1525379

(Core :: Widget: Cocoa, defect)

Description

[Tim Taubert [:ttaubert] (inactive)]

I noticed this problem on Mac where I do have a devicePixelRatio of 2.0. In the main process, there is:

primaryScreen.GetRect() != primaryScreen.GetRectDisplayPix()

When the same is called in a <browser remote=true> it returns different values where:

primaryScreen.GetRect() == primaryScreen.GetRectDisplayPix()

Comment 1

[Steven Michaud [:smichaud] (Retired)]

> <browser remote=true>

I don't know what this means.  And "on a background process" is ambiguous.

Does it just mean that Firefox isn't the currently focused app (doesn't currently have application focus)?

Comment 2

[Tim Taubert [:ttaubert] (inactive)]

Sorry, I was talking about remote browsers. When a browser/tab is created with the remote attribute set to true then we create a separate process. Code running in that remote process returns the wrong screen size.

Comment 3

[Josh Aas]

I'm pretty sure this is bug 1525379, which is fixed now.