Re: Proposed function: x-display-usable-bounds

["Jan Djärv" <jan.h.d@swipnet.se>]

Adrian Robert skrev:
> Hi,
> 
> On the Mac platform both the Carbon and Cocoa ports face the problem
> of determining where on the display to place new frames.  For this it
> is helpful not just to know the overall dimensions of the display
> (x-display-pixel-width,height) but also the portion of the display
> that is not obscured/reserved for the dock and menubar.  I assume this
> issue comes up as well on Windows (task bar) and on X desktops such as
> Gnome or KDE.
> 

Gnome and KDE follow the Extended windowmanager hints specification.  It 
defines a property on the root window which gives the "usable" display area.

http://freedesktop.org/wiki/Specifications/wm-spec

The implementation for KDE and Gnome could easily be done in elisp.  Does your 
patch handle multiple desktops/screens?

> The Carbon port was defining its own function to return (top left
> width height) for the usable screen area.  Since it seems relevant for
> all platforms, it would seem appropriate to name this function with an
> x- prefix, e.g., x-display-usable-bounds, and define it for all
> platforms.  As a placeholder implementation, a list (0 0
> x-display-pixel-width x-display-pixel-height) could be returned.  See
> the thread below for the current Carbon and Cocoa implementations.
> 
> http://sourceforge.net/mailarchive/forum.php?thread_name=2CE05DE2-B276-4F80-918B-9C1A28DF169A%40gmail.com&forum_name=emacs-app-dev-
> 

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