[jbosstools-issues] [JBoss JIRA] (ERT-733) [GTK] Display.getBounds() returns wrong values for most multi monitor setups [EBZ#547375]

[Eric Williams (Jira)]

     [ https://issues.jboss.org/browse/ERT-733?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Eric Williams reassigned ERT-733:
---------------------------------

      Sprint: devex #168 June 2019
    Assignee: Eric Williams


> [GTK] Display.getBounds() returns wrong values for most multi monitor setups [EBZ#547375]
> -----------------------------------------------------------------------------------------
>
>                 Key: ERT-733
>                 URL: https://issues.jboss.org/browse/ERT-733
>             Project: Eclipse Release Train
>          Issue Type: Task
>          Components: Platform
>            Reporter: Friendly Jira Robot
>            Assignee: Eric Williams
>            Priority: Major
>              Labels: 4.13, SWT, bzira
>
> Display.getBounds() should return a bounding box over all monitors. It should take into account each monitor's x and y values as well as their width and height.
> The current implementation iterates over all available monitors, takes the width and height of the first one it can find and then simply adds the x and y values of all the other monitors on top. Therefore this algorithm only properly works when there are at most two monitors next to each other with the same screen resolution and they are iterated in order.
> For example I have two monitors (2560x1440 and 1920x1080) horizontally aligned next to each other, with the smaller screen aligning at the bottom. I would have expected getBounds to return (0,0,2560+1920=4480,1440). Instead (0,0,5120,1800) is returned. If I align them at the top (0,0,5120,1440) is returned. If it had iterated them in the other possible order a different, also wrong result would have been returned.
> The calculation of a proper bounding box should cover all possible use cases, including having more than two monitors, having different screen resolutions and having different setups like being aligned in multiple rows.



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