20

I'm trying to achieve the following behavior in Emacs24:

I like to use a different theme (solarized-dark vs. solarized-light) depending on whether I connect to the running server with a terminal frame

% emacsclient -t

or with a gtk frame

% emacsclient -c

This seems to have worked in older Emacs, but the current Emacs I couldn't find a way. I alreday checked SO (e.g., https://stackoverflow.com/q/18904529/152439 and answers) and the mailing lists (e.g., https://lists.gnu.org/archive/html/help-gnu-emacs/2012-02/msg00227.html and https://lists.gnu.org/archive/html/help-gnu-emacs/2012-02/msg00237.html).

My current setup looks like this:

(add-to-list 'custom-theme-load-path "~/.emacs.d/themes/solarized")
(if (daemonp)
  (add-hook 'after-make-frame-functions
    (lambda (frame)
      (select-frame frame)
      (if (display-graphic-p frame)
        (load-theme 'solarized-light t)
        (load-theme 'solarized-dark t)
      )
    )
  )
  (load-theme 'solarized-light t)
)

The problem with this is that if I have a graphical frame open and then open a terminal frame with emacsclient -t, the theme solarized-dark gets applied to both the new terminal frame (which is correct) and the already open graphical frame (which should be left untouched, ideally). The equivalent happens when a terminal frame is already open and I open a new graphical frame with emacsclient -c.

EDIT: In case this is not possible with current Emacs24, are there any plans to make it possible again?

  • 1
    Afaik (from other search for this very purpose), the old color-theme implementation allowed for some per-buffer settings. With emacs 24 came a built-in theme support (known as deftheme or load-theme), which doesn't support this: the theme is the same for the whole emacs session. For this kind of setup, maybe you can manage an acceptable hack by always loading solarized-dark, and using the -rv flag to start the graphical frames, but it will be far from perfect. – T. Verron Oct 12 '14 at 11:39
  • One workaround is to run separate clients for the terminal and for the GUI as discussed here: emacs.stackexchange.com/q/41/93 Depending on your workflow, this may not be a feasible solution. It works for me because I am doing different types of tasks in each, with little or no overlap. – nispio Oct 12 '14 at 14:43
  • If the inbuilt customt theming in emacs24 does not fit your needs, you can always use color-theme.el which IIRC had frame dependent color settings. There is no great advantage in using the inbuilt theming capabilities apart from ubiquity. – Vamsi Oct 12 '14 at 18:10
  • 2
    color-theme-buffer-local provides buffer-local theme support for both color-theme and the Emacs 24 theme systems. My version of the solarized theme also supports both systems, if you decide to go this route. – sanityinc Oct 13 '14 at 7:27
  • @sanityinc Thanks; I'm using Emacs 24.3, and there seem to be some problems, see github.com/vic/color-theme-buffer-local/issues/5. But I'll keep an eye on the project. – andreas-h Oct 13 '14 at 12:14
7

You cannot do this using different themes. The solution is to create a theme that has different face definitions depending on the terminal. If you look at an example like font-lock-comment-face, you'll see how it works. Instead of specifying ((class color) (min-colors 88) (background dark)) you could also specifcy (type tty) or (type graphic) etc. The manual has more info.

(defface font-lock-comment-face
  '((((class grayscale) (background light))
 :foreground "DimGray" :weight bold :slant italic)
(((class grayscale) (background dark))
 :foreground "LightGray" :weight bold :slant italic)
(((class color) (min-colors 88) (background light))
 :foreground "Firebrick")
(((class color) (min-colors 88) (background dark))
 :foreground "chocolate1")
(((class color) (min-colors 16) (background light))
 :foreground "red")
(((class color) (min-colors 16) (background dark))
 :foreground "red1")
(((class color) (min-colors 8) (background light))
 :foreground "red")
(((class color) (min-colors 8) (background dark))
 :foreground "yellow")
(t :weight bold :slant italic))
  "Font Lock mode face used to highlight comments."
  :group 'font-lock-faces)

I guess you could write a function that takes two themes and produces a merged theme, with faces from one theme being assigned (type tty) and faces from the other theme being assigned (type graphic) where both of the original themes use t.

5

color-theme-buffer-local provides buffer-local theme support for both color-theme and the Emacs 24 theme systems. My version of the solarized theme also supports both systems, if you decide to go this route.

  • thanks for the pointer to your version of solarized, I really like it! – andreas-h Feb 26 '15 at 0:14
2

You can define conditions for face customizations, like "terminal mode" or "minimal colors" in the customization editor:

When customizing a face, click the [State] button and select "Show all display specs". Then you can set up the conditions for further specialization of the face.

Here's a minimal variant to set the background color to black when the frame is a tty:

(custom-set-faces
 '(default (
            (((type tty) (min-colors 256))
             (:background "black"))
            (t
             (:background "#181a26")))
    ))

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