;;; xterm.el --- define function key sequences and standard colors for xterm
;; Copyright (C) 1995, 2001, 2002, 2003, 2004, 2005,
-;; 2006, 2007, 2008 Free Software Foundation, Inc.
+;; 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
;; Author: FSF
;; Keywords: terminals
;; This file is part of GNU Emacs.
-;; GNU Emacs is free software; you can redistribute it and/or modify
+;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation; either version 3, or (at your option)
-;; any later version.
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs; see the file COPYING. If not, write to the
-;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-;; Boston, MA 02110-1301, USA.
+;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
(set-keymap-parent input-decode-map map)))
(xterm-register-default-colors)
- ;; This recomputes all the default faces given the colors we've just set up.
(tty-set-up-initial-frame-faces)
-
+
;; Try to turn on the modifyOtherKeys feature on modern xterms.
;; When it is turned on many more key bindings work: things like
;; C-. C-, etc.
;; modifyOtherKeys. At this time only xterm does.
(let ((coding-system-for-read 'binary)
(chr nil)
- (str nil))
+ (str nil)
+ (recompute-faces nil)
+ version)
+ ;; Pending input can be mistakenly returned by the calls to
+ ;; read-event below. Discard it.
+ (discard-input)
;; Try to find out the type of terminal by sending a "Secondary
;; Device Attributes (DA)" query.
(send-string-to-terminal "\e[>0c")
(while (not (equal (setq chr (read-event nil nil 2)) ?c))
(setq str (concat str (string chr))))
(when (string-match ">0;\\([0-9]+\\);0" str)
+ (setq version (string-to-number
+ (substring str (match-beginning 1) (match-end 1))))
+ ;; xterm version 242 supports reporting the background
+ ;; color, maybe earlier versions do too...
+ (when (>= version 242)
+ (send-string-to-terminal "\e]11;?\e\\")
+ (when (equal (read-event nil nil 2) ?\e)
+ (when (equal (read-event nil nil 2) ?\])
+ (setq str "")
+ (while (not (equal (setq chr (read-event nil nil 2)) ?\\))
+ (setq str (concat str (string chr))))
+ (when (string-match "11;rgb:\\([a-f0-9]+\\)/\\([a-f0-9]+\\)/\\([a-f0-9]+\\)" str)
+ (setq recompute-faces
+ (xterm-maybe-set-dark-background-mode
+ (string-to-number (match-string 1 str) 16)
+ (string-to-number (match-string 2 str) 16)
+ (string-to-number (match-string 3 str) 16)))))))
;; NUMBER2 is the xterm version number, look for something
;; greater than 216, the version when modifyOtherKeys was
;; introduced.
- (when (>= (string-to-number
- (substring str (match-beginning 1) (match-end 1))) 216)
+ (when (>= version 216)
;; Make sure that the modifyOtherKeys state is restored when
;; suspending, resuming and exiting.
(add-hook 'suspend-hook 'xterm-turn-off-modify-other-keys)
;; need to deal with modify-other-keys.
(push (frame-terminal (selected-frame))
xterm-modify-other-keys-terminal-list)
- (xterm-turn-on-modify-other-keys))))))
+ (xterm-turn-on-modify-other-keys))
+
+ ;; Recompute faces here in case the background mode was
+ ;; set to dark. We used to call
+ ;; `tty-set-up-initial-frame-faces' only once, but that
+ ;; caused the light background faces to be computed
+ ;; incorrectly. See:
+ ;; http://permalink.gmane.org/gmane.emacs.devel/119627
+ (when recompute-faces
+ (tty-set-up-initial-frame-faces))))))
(run-hooks 'terminal-init-xterm-hook))
(clear-face-cache)))
(defun xterm-turn-on-modify-other-keys ()
- "Turn on the modifyOtherKeys feature of xterm."
+ "Turn the modifyOtherKeys feature of xterm back on."
(let ((terminal (frame-terminal (selected-frame))))
(when (and (terminal-live-p terminal)
(memq terminal xterm-modify-other-keys-terminal-list))
- (send-string-to-terminal "\e[>4;1m"))))
+ (send-string-to-terminal "\e[>4;1m" terminal))))
(defun xterm-turn-off-modify-other-keys (&optional frame)
- "Turn off the modifyOtherKeys feature of xterm."
+ "Temporarily turn off the modifyOtherKeys feature of xterm."
(let ((terminal (when frame (frame-terminal frame))))
- (when (and (frame-live-p terminal)
+ (when (and (terminal-live-p terminal)
(memq terminal xterm-modify-other-keys-terminal-list))
- (send-string-to-terminal "\e[>4m"))))
+ (send-string-to-terminal "\e[>4m" terminal))))
(defun xterm-remove-modify-other-keys (&optional terminal)
- "Turn off the modifyOtherKeys feature of xterm and remove frame from consideration."
- (setq terminal (and terminal (frame-terminal (selected-frame))))
+ "Turn off the modifyOtherKeys feature of xterm for good."
+ (setq terminal (or terminal (frame-terminal (selected-frame))))
(when (and (terminal-live-p terminal)
(memq terminal xterm-modify-other-keys-terminal-list))
(setq xterm-modify-other-keys-terminal-list
(delq terminal xterm-modify-other-keys-terminal-list))
- (send-string-to-terminal "\e[>4m")))
+ (send-string-to-terminal "\e[>4m" terminal)))
+
+(defun xterm-maybe-set-dark-background-mode (redc greenc bluec)
+ ;; Use the heuristic in `frame-set-background-mode' to decide if a
+ ;; frame is dark.
+ (when (< (+ redc greenc bluec) (* .6 (+ 65535 65535 65535)))
+ (set-terminal-parameter nil 'background-mode 'dark)
+ t))
;; arch-tag: 12e7ebdd-1e6c-4b25-b0f9-35ace25e855a
;;; xterm.el ends here
HCoop / bpt / emacs.git / blobdiff