Mention `frame-resize-pixelwise' to make frames truly fullscreen or maximized.

* frame.el (toggle-frame-maximized, toggle-frame-fullscreen):
In doc-string mention need of setting `frame-resize-pixelwise'.

* frames.texi (Frame Commands):
* cmdargs.texi (Window Size X): Mention the use of
`frame-resize-pixelwise' to make frames truly fullscreen or
maximized.

* frames.texi (Size Parameters, Size and Position): Mention that
with some window managers you have to set
`frame-resize-pixelwise' in order make a frame truly fullscreen
or maximized.

diff --git a/doc/emacs/ChangeLog b/doc/emacs/ChangeLog
index a4f4739e120b6d891d3ab441d599a031b9e7f57d..4e0625ea9891a06d44fe7ca9b3c7d6c8939a7d9d 100644 (file)
--- a/doc/emacs/ChangeLog
+++ b/doc/emacs/ChangeLog
@@ -1,3 +1,10 @@
+2014-10-03  Martin Rudalics  <rudalics@gmx.at>
+
+       * frames.texi (Frame Commands):
+       * cmdargs.texi (Window Size X): Mention the use of
+       `frame-resize-pixelwise' to make frames truly fullscreen or
+       maximized.
+
 2014-10-01  Glenn Morris  <rgm@gnu.org>
 
        * package.texi (Package Installation): Mention etc/package-keyring.gpg.

diff --git a/doc/emacs/cmdargs.texi b/doc/emacs/cmdargs.texi
index 8b3654dae68d3e8c9f713891b479e9af247bd691..56137272be6a7a3232791418808ac6318c64e65d 100644 (file)
--- a/doc/emacs/cmdargs.texi
+++ b/doc/emacs/cmdargs.texi
@@ -987,10 +987,10 @@ size with no tool bar, use an X resource to specify ``no tool bar''
 (@pxref{Table of Resources}); then Emacs will already know there's no
 tool bar when it processes the specified geometry.
 
-  When using one of @samp{--fullscreen}, @samp{--maximized}, @samp{--fullwidth}
-or @samp{--fullheight} there may be some space around the frame
-anyway.  That is because Emacs rounds the sizes so they are an
-even number of character heights and widths.
+  When using one of @samp{--fullscreen}, @samp{--maximized},
+@samp{--fullwidth} or @samp{--fullheight}, some window managers require
+to set the variable @code{frame-resize-pixelwise} to a non-@code{nil}
+value to make a frame appear truly ``maximized'' or ``fullscreen''.
 
  Some window managers have options that can make them ignore both
 program-specified and user-specified positions.  If these are set,

diff --git a/doc/emacs/frames.texi b/doc/emacs/frames.texi
index 036e8cf65ebc8e97b7d1be7232d430d6e75c8479..8c2289b83de189c4ebc56738b4de6db6cb3726ae 100644 (file)
--- a/doc/emacs/frames.texi
+++ b/doc/emacs/frames.texi
@@ -469,6 +469,10 @@ hides window manager decorations, giving slightly more screen space to
 Emacs itself.)
 @end table
 
+  Note that with some window managers you may have to customize the
+variable @code{frame-resize-pixelwise} to a non-@code{nil} value in
+order to make a frame truly ``maximized'' or ``fullscreen''.
+
   The @kbd{C-x 5 0} (@code{delete-frame}) command deletes the selected
 frame.  However, it will refuse to delete the last frame in an Emacs
 session, to prevent you from losing the ability to interact with the

diff --git a/doc/lispref/ChangeLog b/doc/lispref/ChangeLog
index c6e519a9a2847a3200354f4d76739603592dfebc..818f0b7e5c2953c21925dfdcb8f0be4fab0a2b9c 100644 (file)
--- a/doc/lispref/ChangeLog
+++ b/doc/lispref/ChangeLog
@@ -1,3 +1,10 @@
+2014-10-03  Martin Rudalics  <rudalics@gmx.at>
+
+       * frames.texi (Size Parameters, Size and Position): Mention that
+       with some window managers you have to set
+       `frame-resize-pixelwise' in order make a frame truly fullscreen
+       or maximized.
+
 2014-09-04  Stefan Monnier  <monnier@iro.umontreal.ca>
 
        * functions.texi (Core Advising Primitives): Add a note about the

diff --git a/doc/lispref/frames.texi b/doc/lispref/frames.texi
index b65134269099ababb461d357283dbcdf99cc5eb7..92b5791051b4acb8fdea2c518a98fb95170e822f 100644 (file)
--- a/doc/lispref/frames.texi
+++ b/doc/lispref/frames.texi
@@ -686,6 +686,11 @@ difference between @code{maximized} and @code{fullboth} is that the
 former can still be resized by dragging window manager decorations
 with the mouse, while the latter really covers the whole screen and
 does not allow resizing by mouse dragging.
+
+With some window managers you may have to customize the variable
+@code{frame-resize-pixelwise} to a non-@code{nil} value in order to make
+a frame appear ``maximized'' or ``fullscreen''.
+
 @end table
 
 @node Layout Parameters
@@ -1163,7 +1168,10 @@ on the toolkit used: Dragging the frame border with the mouse is usually
 always done character-wise.  Calling @code{set-frame-size} (see below)
 with arguments that do not specify the frame size as an integer multiple
 of its character size may be, however, either ignored or cause a
-rounding (GTK+, Windows) or get accepted (Lucid, Motif).
+rounding (GTK+) or get accepted (Lucid, Motif, Windows).
+
+With some window managers you may have to set this to non-@code{nil} in
+order to make a frame appear truly ``maximized'' or ``fullscreen''.
 @end defopt
 
 @defun set-frame-size frame width height pixelwise

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 9b1c5a78a7a0c8a2429bb2a01a6cebc34dd661ca..c38b2c13f9bd1d77f2f42c68db289f6be56f3bcd 100644 (file)
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,8 @@
+2014-10-03  Martin Rudalics  <rudalics@gmx.at>
+
+       * frame.el (toggle-frame-maximized, toggle-frame-fullscreen):
+       In doc-string mention need of setting `frame-resize-pixelwise'.
+
 2014-10-03  Stefan Monnier  <monnier@iro.umontreal.ca>
 
        * vc/vc-svn.el (vc-svn-after-dir-status): Fix the non-remote regexp,

diff --git a/lisp/frame.el b/lisp/frame.el
index 5e9b535100588240995c16e42f42102fd8ef209c..a14b0c2910312598cfec4fe98fe4b775021c299c 100644 (file)
--- a/lisp/frame.el
+++ b/lisp/frame.el
@@ -1844,6 +1844,11 @@ If the frame is in fullscreen mode, don't change its mode,
 just toggle the temporary frame parameter `maximized',
 so the frame will go to the right maximization state
 after disabling fullscreen mode.
+
+Note that with some window managers you may have to set
+`frame-resize-pixelwise' to non-nil in order to make a frame
+appear truly maximized.
+
 See also `toggle-frame-fullscreen'."
   (interactive)
   (if (memq (frame-parameter nil 'fullscreen) '(fullscreen fullboth))
@@ -1865,6 +1870,11 @@ already fullscreen.  Ignore window manager screen decorations.
 When turning on fullscreen mode, remember the previous value of the
 maximization state in the temporary frame parameter `maximized'.
 Restore the maximization state when turning off fullscreen mode.
+
+Note that with some window managers you may have to set
+`frame-resize-pixelwise' to non-nil in order to make a frame
+appear truly fullscreen.
+
 See also `toggle-frame-maximized'."
   (interactive)
   (modify-frame-parameters