lisp/term/w32console.el

   1 ;;; w32console.el -- Setup w32 console keys and colors.
   2
   3 ;; Copyright (C) 2007-2018 Free Software Foundation, Inc.
   4
   5 ;; Author: FSF
   6 ;; Keywords: terminals
   7
   8 ;; This file is part of GNU Emacs.
   9
  10 ;; GNU Emacs is free software: you can redistribute it and/or modify
  11 ;; it under the terms of the GNU General Public License as published by
  12 ;; the Free Software Foundation, either version 3 of the License, or
  13 ;; (at your option) any later version.
  14
  15 ;; GNU Emacs is distributed in the hope that it will be useful,
  16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 ;; GNU General Public License for more details.
  19
  20 ;; You should have received a copy of the GNU General Public License
  21 ;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
  22
  23 ;;; Commentary:
  24
  25 ;;; Code:
  26
  27 ;; W32 uses different color indexes than standard:
  28
  29 (defvar w32-tty-standard-colors
  30   '(("black"          0     0     0     0)
  31     ("blue"           1     0     0 52480) ; MediumBlue
  32     ("green"          2  8704 35584  8704) ; ForestGreen
  33     ("cyan"           3     0 52736 53504) ; DarkTurquoise
  34     ("red"            4 45568  8704  8704) ; FireBrick
  35     ("magenta"        5 35584     0 35584) ; DarkMagenta
  36     ("brown"          6 40960 20992 11520) ; Sienna
  37     ("lightgray"      7 48640 48640 48640) ; Gray
  38     ("darkgray"       8 26112 26112 26112) ; Gray40
  39     ("lightblue"      9     0     0 65535) ; Blue
  40     ("lightgreen"    10     0 65535     0) ; Green
  41     ("lightcyan"     11     0 65535 65535) ; Cyan
  42     ("lightred"      12 65535     0     0) ; Red
  43     ("lightmagenta"  13 65535     0 65535) ; Magenta
  44     ("yellow"        14 65535 65535     0) ; Yellow
  45     ("white"         15 65535 65535 65535))
  46 "A list of VGA console colors, their indices and 16-bit RGB values.")
  47
  48 (declare-function x-setup-function-keys "term/common-win" (frame))
  49 (declare-function get-screen-color "w32console.c" ())
  50 (declare-function w32-get-console-codepage "w32proc.c" ())
  51 (declare-function w32-get-console-output-codepage "w32proc.c" ())
  52
  53 (defun terminal-init-w32console ()
  54   "Terminal initialization function for w32 console."
  55   ;; Share function key initialization with w32 gui frames
  56   (x-setup-function-keys (selected-frame))
  57   ;; Set terminal and keyboard encodings to the current OEM codepage.
  58   (let ((oem-code-page-coding
  59          (intern (format "cp%d" (w32-get-console-codepage))))
  60         (oem-code-page-output-coding
  61          (intern (format "cp%d" (w32-get-console-output-codepage))))
  62         oem-cs-p oem-o-cs-p)
  63         (setq oem-cs-p (coding-system-p oem-code-page-coding))
  64         (setq oem-o-cs-p (coding-system-p oem-code-page-output-coding))
  65         (when oem-cs-p
  66           (set-keyboard-coding-system oem-code-page-coding)
  67           (set-terminal-coding-system
  68            (if oem-o-cs-p oem-code-page-output-coding oem-code-page-coding))
  69           ;; Since we changed the terminal encoding, we need to repeat
  70           ;; the test for Unicode quotes being displayable.
  71           (startup--setup-quote-display)))
  72   (let* ((colors w32-tty-standard-colors)
  73          (color (car colors)))
  74     (tty-color-clear)
  75     (while colors
  76       (tty-color-define (car color) (cadr color) (cddr color))
  77       (setq colors (cdr colors)
  78             color (car colors))))
  79   (clear-face-cache)
  80   ;; Figure out what are the colors of the console window, and set up
  81   ;; the background-mode correspondingly.
  82   (let* ((screen-color (get-screen-color))
  83          (bg (cadr screen-color))
  84          (descr (tty-color-by-index bg))
  85          r g b bg-mode)
  86     (setq r (nth 2 descr)
  87           g (nth 3 descr)
  88           b (nth 4 descr))
  89     (if (< (+ r g b) (* .6 (+ 65535 65535 65535)))
  90         (setq bg-mode 'dark)
  91       (setq bg-mode 'light))
  92     (set-terminal-parameter nil 'background-mode bg-mode))
  93   (tty-set-up-initial-frame-faces)
  94   (run-hooks 'terminal-init-w32-hook))
  95
  96 (provide 'term/w32console)
  97
  98 ;;; w32console.el ends here