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

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From: Anders Lindgren <andlind <at> gmail.com>
To: martin rudalics <rudalics <at> gmx.at>
Cc: Keith David Bershatsky <esq <at> lawlist.com>, 21415 <at> debbugs.gnu.org
Subject: bug#21415: 25.0.50; Emacs Trunk -- pixelwise width/height for x-create-frame
Date: Sun, 20 Sep 2015 09:25:30 +0200

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Hi,

I've attached the patch, sorry for posting it in the mail.

You can read more about "screen coordinates" here:

https://developer.apple.com/library/ios/documentation/General/Conceptual/Devpedia-CocoaApp/CoordinateSystem.html

Sincerely,
    Anders

On Sun, Sep 20, 2015 at 12:17 AM, martin rudalics <rudalics <at> gmx.at> wrote:

> > Below is a patch that should correct the problem:
>
> Thanks.  But pretty please send it as an attachment.  Here it arrived
> as:
>
> > diff --git a/src/nsterm.m b/src/nsterm.m
> > index 2806f31..14f2beb 100644--- a/src/nsterm.m
> > +++ b/src/nsterm.m@@ -1333,6 +1333,7 @@ x_set_window_size (struct
> > frame *f,   int tb = FRAME_EXTERNAL_TOOL_BAR (f);
> >     int pixelwidth, pixelheight;
> >     int rows, cols;+  int orig_height = wr.size.height;
> >     NSTRACE (x_set_window_size);
> >   @@ -1386,7 +1387,7 @@ x_set_window_size (struct frame *f,  if
> > (f->output_data.ns->zooming)
> >      f->output_data.ns->zooming = 0;
> >    else-   wr.origin.y += FRAME_PIXEL_HEIGHT (f) - pixelheight;+
> > wr.origin.y += orig_height - wr.size.height;
> >     [view setRows: rows andColumns: cols];
> >     [window setFrame: wr display: YES];
>
> > Effectively, this will ensure that whenever the height of a frame is
> > changed, the origin (the distance from the lower left corner of the
> display
> > to the lower left hand corner of the frame) is updated accordingly.
>
> Can you please tell us why the "origin" on OS X is apparently the lower
> left corner?  Where can I read about this?
>
> martin
>

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