lisp/term/pc-win.el

   1 ;;; pc-win.el --- setup support for `PC windows' (whatever that is)
   2
   3 ;; Copyright (C) 1994, 1996, 1997, 1999, 2001, 2002, 2003, 2004,
   4 ;;   2005, 2006, 2007, 2008 Free Software Foundation, Inc.
   5
   6 ;; Author: Morten Welinder <terra@diku.dk>
   7 ;; Maintainer: FSF
   8
   9 ;; This file is part of GNU Emacs.
  10
  11 ;; GNU Emacs is free software: you can redistribute it and/or modify
  12 ;; it under the terms of the GNU General Public License as published by
  13 ;; the Free Software Foundation, either version 3 of the License, or
  14 ;; (at your option) any later version.
  15
  16 ;; GNU Emacs is distributed in the hope that it will be useful,
  17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 ;; GNU General Public License for more details.
  20
  21 ;; You should have received a copy of the GNU General Public License
  22 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  23
  24 ;;; Commentary:
  25
  26 ;;; Code:
  27
  28 (load "term/internal" nil t)
  29
  30 (declare-function msdos-remember-default-colors "msdos.c")
  31 (declare-function w16-set-clipboard-data "w16select.c")
  32 (declare-function w16-get-clipboard-data "w16select.c")
  33
  34 ;;; This is copied from etc/rgb.txt, except that some values were changed
  35 ;;; a bit to make them consistent with DOS console colors, and the RGB
  36 ;;; values were scaled up to 16 bits, as `tty-define-color' requires.
  37 ;;;
  38 ;;; The mapping between the 16 standard EGA/VGA colors and X color names
  39 ;;; was done by running a Unix version of Emacs inside an X client and a
  40 ;;; DJGPP-compiled Emacs on the same PC.  The names of X colors used to
  41 ;;; define the pixel values are shown as comments to each color below.
  42 ;;;
  43 ;;; If you want to change the RGB values, keep in mind that various pieces
  44 ;;; of Emacs think that a color whose RGB values add up to less than 0.6 of
  45 ;;; the values for WHITE (i.e. less than 117963) are ``dark'', otherwise the
  46 ;;; color is ``light''; see `frame-set-background-mode' in lisp/faces.el for
  47 ;;; an example.
  48 (defvar msdos-color-values
  49   '(("black"          0     0     0     0)
  50     ("blue"           1     0     0 52480) ; MediumBlue
  51     ("green"          2  8704 35584  8704) ; ForestGreen
  52     ("cyan"           3     0 52736 53504) ; DarkTurquoise
  53     ("red"            4 45568  8704  8704) ; FireBrick
  54     ("magenta"        5 35584     0 35584) ; DarkMagenta
  55     ("brown"          6 40960 20992 11520) ; Sienna
  56     ("lightgray"      7 48640 48640 48640) ; Gray
  57     ("darkgray"       8 26112 26112 26112) ; Gray40
  58     ("lightblue"      9     0     0 65535) ; Blue
  59     ("lightgreen"    10     0 65535     0) ; Green
  60     ("lightcyan"     11     0 65535 65535) ; Cyan
  61     ("lightred"      12 65535     0     0) ; Red
  62     ("lightmagenta"  13 65535     0 65535) ; Magenta
  63     ("yellow"        14 65535 65535     0) ; Yellow
  64     ("white"         15 65535 65535 65535))
  65   "A list of MS-DOS console colors, their indices and 16-bit RGB values.")
  66
  67 ;; ---------------------------------------------------------------------------
  68 ;; We want to delay setting frame parameters until the faces are setup
  69 (defvar default-frame-alist nil)
  70 (modify-frame-parameters terminal-frame default-frame-alist)
  71 (tty-color-clear)
  72
  73 (defun msdos-face-setup ()
  74   (set-face-foreground 'bold "yellow" terminal-frame)
  75   (set-face-foreground 'italic "red" terminal-frame)
  76   (set-face-foreground 'bold-italic "lightred" terminal-frame)
  77   (set-face-foreground 'underline "white" terminal-frame)
  78
  79   (make-face 'msdos-menu-active-face)
  80   (make-face 'msdos-menu-passive-face)
  81   (make-face 'msdos-menu-select-face)
  82   (set-face-foreground 'msdos-menu-active-face "white" terminal-frame)
  83   (set-face-foreground 'msdos-menu-passive-face "lightgray" terminal-frame)
  84   (set-face-background 'msdos-menu-active-face "blue" terminal-frame)
  85   (set-face-background 'msdos-menu-passive-face "blue" terminal-frame)
  86   (set-face-background 'msdos-menu-select-face "red" terminal-frame))
  87
  88 (add-hook 'before-init-hook 'msdos-face-setup)
  89
  90 (defun msdos-handle-reverse-video (frame parameters)
  91   "Handle the reverse-video frame parameter on MS-DOS frames."
  92   (when (cdr (or (assq 'reverse parameters)
  93                  (assq 'reverse default-frame-alist)))
  94       (let* ((params (frame-parameters frame))
  95              (fg (cdr (assq 'foreground-color params)))
  96              (bg (cdr (assq 'background-color params))))
  97         (if (equal fg (cdr (assq 'mouse-color params)))
  98             (modify-frame-parameters frame
  99                                      (list (cons 'mouse-color bg))))
 100         (if (equal fg (cdr (assq 'cursor-color params)))
 101             (modify-frame-parameters frame
 102                                      (list (cons 'cursor-color bg)))))))
 103
 104 ;; This must run after all the default colors are inserted into
 105 ;; tty-color-alist, since msdos-handle-reverse-video needs to know the
 106 ;; actual frame colors.  tty-color-alist is set up by startup.el, but
 107 ;; only after it runs before-init-hook and after-init-hook.
 108 (defun msdos-setup-initial-frame ()
 109   (modify-frame-parameters terminal-frame default-frame-alist)
 110   ;; This remembers the screen colors after applying default-frame-alist,
 111   ;; so that all subsequent frames could begin with those colors.
 112   (msdos-remember-default-colors terminal-frame)
 113   (modify-frame-parameters terminal-frame initial-frame-alist)
 114   (msdos-handle-reverse-video terminal-frame
 115                               (frame-parameters terminal-frame))
 116
 117   (frame-set-background-mode terminal-frame)
 118   (face-set-after-frame-default terminal-frame))
 119
 120 (add-hook 'term-setup-hook 'msdos-setup-initial-frame)
 121
 122 ;; We create frames as if we were a terminal, but with a twist.
 123 (defun make-msdos-frame (&optional parameters)
 124   (let ((frame (make-terminal-frame parameters))
 125         success)
 126     (unwind-protect
 127         (progn
 128           (msdos-handle-reverse-video frame (frame-parameters frame))
 129           (frame-set-background-mode frame)
 130           (face-set-after-frame-default frame)
 131           (setq success t))
 132       (unless success (delete-frame frame)))
 133     frame))
 134
 135 (add-to-list 'frame-creation-function-alist '(pc . make-msdos-frame))
 136
 137 ;; ---------------------------------------------------------------------------
 138 ;; More or less useful imitations of certain X-functions.  A lot of the
 139 ;; values returned are questionable, but usually only the form of the
 140 ;; returned value matters.  Also, by the way, recall that `ignore' is
 141 ;; a useful function for returning 'nil regardless of argument.
 142
 143 ;; From src/xfns.c
 144 (defun x-list-fonts (pattern &optional face frame maximum width)
 145   (if (or (null width) (and (numberp width) (= width 1)))
 146       (list "ms-dos")
 147     (list "no-such-font")))
 148 (defun x-display-pixel-width (&optional frame) (frame-width frame))
 149 (defun x-display-pixel-height (&optional frame) (frame-height frame))
 150 (defun x-display-planes (&optional frame) 4) ;bg switched to 16 colors as well
 151 (defun x-display-color-cells (&optional frame) 16)
 152 (defun x-server-max-request-size (&optional frame) 1000000) ; ???
 153 (defun x-server-vendor (&optional frame) t "GNU")
 154 (defun x-server-version (&optional frame) '(1 0 0))
 155 (defun x-display-screens (&optional frame) 1)
 156 (defun x-display-mm-height (&optional frame) 245) ; Guess the size of my
 157 (defun x-display-mm-width (&optional frame) 322)  ; monitor, EZ...
 158 (defun x-display-backing-store (&optional frame) 'not-useful)
 159 (defun x-display-visual-class (&optional frame) 'static-color)
 160 (fset 'x-display-save-under 'ignore)
 161 (fset 'x-get-resource 'ignore)
 162
 163 ;; From lisp/term/x-win.el
 164 (defvar x-display-name "pc"
 165   "The display name specifying the MS-DOS display and frame type.")
 166 (setq split-window-keep-point t)
 167 (defvar x-colors (mapcar 'car msdos-color-values)
 168   "The list of colors available on a PC display under MS-DOS.")
 169
 170 ;; From lisp/term/w32-win.el
 171 ;
 172 ;;;; Selections and cut buffers
 173 ;
 174 ;;; We keep track of the last text selected here, so we can check the
 175 ;;; current selection against it, and avoid passing back our own text
 176 ;;; from x-cut-buffer-or-selection-value.
 177 (defvar x-last-selected-text nil)
 178
 179 (defcustom x-select-enable-clipboard t
 180   "Non-nil means cutting and pasting uses the clipboard.
 181 This is the default on this system, since MS-Windows does not
 182 support other types of selections."
 183   :type 'boolean
 184   :group 'killing)
 185
 186 (defun x-select-text (text &optional push)
 187   (if x-select-enable-clipboard
 188       (w16-set-clipboard-data text))
 189   (setq x-last-selected-text text))
 190
 191 ;;; Return the value of the current selection.
 192 ;;; Consult the selection, then the cut buffer.  Treat empty strings
 193 ;;; as if they were unset.
 194 (defun x-get-selection-value ()
 195   (if x-select-enable-clipboard
 196       (let (text)
 197         ;; Don't die if x-get-selection signals an error.
 198         (condition-case c
 199             (setq text (w16-get-clipboard-data))
 200           (error (message "w16-get-clipboard-data:%s" c)))
 201         (if (string= text "") (setq text nil))
 202         (cond
 203          ((not text) nil)
 204          ((eq text x-last-selected-text) nil)
 205          ((string= text x-last-selected-text)
 206           ;; Record the newer string, so subsequent calls can use the 'eq' test.
 207           (setq x-last-selected-text text)
 208           nil)
 209          (t
 210           (setq x-last-selected-text text))))))
 211
 212 ;;; Arrange for the kill and yank functions to set and check the clipboard.
 213 (setq interprogram-cut-function 'x-select-text)
 214 (setq interprogram-paste-function 'x-get-selection-value)
 215
 216 ;; From lisp/faces.el: we only have one font, so always return
 217 ;; it, no matter which variety they've asked for.
 218 (defun x-frob-font-slant (font which)
 219   font)
 220 (make-obsolete 'x-frob-font-slant 'make-face-... "21.1")
 221 (defun x-frob-font-weight (font which)
 222   font)
 223 (make-obsolete 'x-frob-font-weight 'make-face-... "21.1")
 224 (defun x-font-family-list ()
 225   "Return a list of available font families on FRAME.\n\
 226 If FRAME is omitted or nil, use the selected frame.\n\
 227 Value is a list of conses (FAMILY . FIXED-P) where FAMILY\n\
 228 is a font family, and FIXED-P is non-nil if fonts of that family\n\
 229 are fixed-pitch."
 230   '(("default" . t)))
 231
 232 ;; From src/fontset.c:
 233 (fset 'query-fontset 'ignore)
 234
 235 ;; From lisp/term/x-win.el: make iconify-or-deiconify-frame a no-op.
 236 (fset 'iconify-or-deiconify-frame 'ignore)
 237
 238 ;; From lisp/frame.el
 239 (fset 'set-default-font 'ignore)
 240 (fset 'set-mouse-color 'ignore)         ; We cannot, I think.
 241 (fset 'set-cursor-color 'ignore)        ; Hardware determined by char under.
 242 (fset 'set-border-color 'ignore)        ; Not useful.
 243
 244 ;; ---------------------------------------------------------------------------
 245
 246 ;; arch-tag: 5cbdb455-b495-427b-95d0-e417d77d00b4
 247 ;;; pc-win.el ends here