GNU bug report logs - #21415
25.0.50; Emacs Trunk -- pixelwise width/height for x-create-frame

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Message #41 received at 21415 <at> debbugs.gnu.org (full text, mbox):

From: Keith David Bershatsky <esq <at> lawlist.com>
To: martin rudalics <rudalics <at> gmx.at>
Cc: 21415 <at> debbugs.gnu.org
Subject: Re: bug#21415: 25.0.50;
 Emacs Trunk -- pixelwise width/height for x-create-frame
Date: Tue, 08 Sep 2015 09:13:04 -0700

Yes, `(setq ns-auto-hide-menu-bar t)` is directly/indirectly related to the new large frame appearing one-half out of sight (above the top of the display).  Setting that variable to the default value of `nil` avoids the problem.  The behavior is not caused by the patch, but is something that I recently noticed (again) when trying to control the exact parameters upon frame creation.  I have been programmatically using `set-frame-position FRAME 0 0` following the creation of new frames to compensate for the inability to set the `top` correctly on frame creation.

With this feature request (#21415), I was hoping to incorporate the magic of `set-frame-size` with the pixelwise argument.  That function is magical because it lets a user precisely control the outer dimensions of a frame on OSX -- i.e., a user can make the outer dimensions exactly one or more pixels larger or smaller.

The patch, from what I understand, seeks to convert pixel specifications into the standard character width and standard text line height.  I believe that method cannot be used to precisely control the pixel outer dimensions of the frame.

The feature request (as I understand it) seeks to control the exact pixel height/width of the outer frame -- irregardless of the character width and text line height.  For example, the laptop that I am using today uses the following:  `(set-frame-size FRAME 1260 774 t)` to precisely fill the display.  The corresponding frame parameters are (width . 114) (height . 38); however, those are insufficient to fill the screen precisely.  I can get close (but no cigar) with (width . 114) (height . 38), and then I need to use `(set-frame-size FRAME 1260 774 t)` to fix what `make-frame` cannot accomplish.

Keith

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