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 Free Software Foundation, Inc.
   4
   5 ;; Author: Morten Welinder <terra@diku.dk>
   6 ;; Maintainer: FSF
   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 2, or (at your option)
  13 ;; 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; see the file COPYING.  If not, write to the
  22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  23 ;; Boston, MA 02111-1307, USA.
  24
  25 ;;; Code:
  26
  27 (load "term/internal" nil t)
  28
  29 ;;; This is copied from etc/rgb.txt, except that some values were changed
  30 ;;; a bit to make them consistent with DOS console colors, and the RGB
  31 ;;; values were scaled up to 16 bits, as `tty-define-color' requires.
  32 ;;;
  33 ;;; The mapping between the 16 standard EGA/VGA colors and X color names
  34 ;;; was done by running a Unix version of Emacs inside an X client and a
  35 ;;; DJGPP-compiled Emacs on the same PC.  The names of X colors used to
  36 ;;; define the pixel values are shown as comments to each color below.
  37 ;;;
  38 ;;; If you want to change the RGB values, keep in mind that various pieces
  39 ;;; of Emacs think that a color whose RGB values add up to less than 0.6 of
  40 ;;; the values for WHITE (i.e. less than 117963) are ``dark'', otherwise the
  41 ;;; color is ``light''; see `frame-set-background-mode' in lisp/faces.el for
  42 ;;; an example.
  43 (defvar msdos-color-values
  44   '(("white"         15 65535 65535 65535)
  45     ("yellow"        14 65535 65535     0) ; Yellow
  46     ("lightmagenta"  13 65535     0 65535) ; Magenta
  47     ("lightred"      12 65535     0     0) ; Red
  48     ("lightcyan"     11     0 65535 65535) ; Cyan
  49     ("lightgreen"    10     0 65535     0) ; Green
  50     ("lightblue"      9     0     0 65535) ; Blue
  51     ("darkgray"       8 26112 26112 26112) ; Gray40
  52     ("lightgray"      7 48640 48640 48640) ; Gray
  53     ("brown"          6 40960 20992 11520) ; Sienna
  54     ("magenta"        5 35584     0 35584) ; DarkMagenta
  55     ("red"            4 45568  8704  8704) ; FireBrick
  56     ("cyan"           3     0 52736 53504) ; DarkTurquoise
  57     ("green"          2  8704 35584  8704) ; ForestGreen
  58     ("blue"           1     0     0 52480) ; MediumBlue
  59     ("black"          0     0     0     0))
  60   "A list of MS-DOS console colors, their indices and 16-bit RGB values.")
  61
  62 ;; ---------------------------------------------------------------------------
  63 ;; We want to delay setting frame parameters until the faces are setup
  64 (defvar default-frame-alist nil)
  65 (modify-frame-parameters terminal-frame default-frame-alist)
  66 (tty-color-clear)
  67
  68 (defun msdos-face-setup ()
  69   (set-face-foreground 'bold "yellow" terminal-frame)
  70   (set-face-foreground 'italic "red" terminal-frame)
  71   (set-face-foreground 'bold-italic "lightred" terminal-frame)
  72   (set-face-foreground 'underline "white" terminal-frame)
  73
  74   (make-face 'msdos-menu-active-face)
  75   (make-face 'msdos-menu-passive-face)
  76   (make-face 'msdos-menu-select-face)
  77   (set-face-foreground 'msdos-menu-active-face "white" terminal-frame)
  78   (set-face-foreground 'msdos-menu-passive-face "lightgray" terminal-frame)
  79   (set-face-background 'msdos-menu-active-face "blue" terminal-frame)
  80   (set-face-background 'msdos-menu-passive-face "blue" terminal-frame)
  81   (set-face-background 'msdos-menu-select-face "red" terminal-frame))
  82
  83 (add-hook 'before-init-hook 'msdos-face-setup)
  84
  85 (defun msdos-handle-reverse-video (frame parameters)
  86   "Handle the reverse-video frame parameter on MS-DOS frames."
  87   (when (cdr (or (assq 'reverse parameters)
  88                  (assq 'reverse default-frame-alist)))
  89       (let* ((params (frame-parameters frame))
  90              (fg (cdr (assq 'foreground-color params)))
  91              (bg (cdr (assq 'background-color params))))
  92         (if (equal fg (cdr (assq 'mouse-color params)))
  93             (modify-frame-parameters frame
  94                                      (list (cons 'mouse-color bg))))
  95         (if (equal fg (cdr (assq 'cursor-color params)))
  96             (modify-frame-parameters frame
  97                                      (list (cons 'cursor-color bg)))))))
  98
  99 ;; This must run after all the default colors are inserted into
 100 ;; tty-color-alist, since msdos-handle-reverse-video needs to know the
 101 ;; actual frame colors.  tty-color-alist is set up by startup.el, but
 102 ;; only after it runs before-init-hook and after-init-hook.
 103 (defun msdos-setup-initial-frame ()
 104   (modify-frame-parameters terminal-frame default-frame-alist)
 105   ;; This remembers the screen colors after applying default-frame-alist,
 106   ;; so that all subsequent frames could begin with those colors.
 107   (msdos-remember-default-colors terminal-frame)
 108   (modify-frame-parameters terminal-frame initial-frame-alist)
 109   (msdos-handle-reverse-video terminal-frame
 110                               (frame-parameters terminal-frame))
 111
 112   (frame-set-background-mode terminal-frame)
 113   (face-set-after-frame-default terminal-frame))
 114
 115 (add-hook 'term-setup-hook 'msdos-setup-initial-frame)
 116
 117 ;; We create frames as if we were a terminal, but with a twist.
 118 (defun make-msdos-frame (&optional parameters)
 119   (let ((frame (make-terminal-frame parameters))
 120         success)
 121     (unwind-protect
 122         (progn
 123           (msdos-handle-reverse-video frame (frame-parameters frame))
 124           (frame-set-background-mode frame)
 125           (face-set-after-frame-default frame)
 126           (setq success t))
 127       (unless success (delete-frame frame)))
 128     frame))
 129
 130 (setq frame-creation-function 'make-msdos-frame)
 131
 132 ;; ---------------------------------------------------------------------------
 133 ;; More or less useful imitations of certain X-functions.  A lot of the
 134 ;; values returned are questionable, but usually only the form of the
 135 ;; returned value matters.  Also, by the way, recall that `ignore' is
 136 ;; a useful function for returning 'nil regardless of argument.
 137
 138 ;; From src/xfns.c
 139 (defun x-list-fonts (pattern &optional face frame maximum width)
 140   (if (or (null width) (and (numberp width) (= width 1)))
 141       (list "ms-dos")
 142     (list "no-such-font")))
 143 (defun x-display-pixel-width (&optional frame) (frame-width frame))
 144 (defun x-display-pixel-height (&optional frame) (frame-height frame))
 145 (defun x-display-planes (&optional frame) 4) ;bg switched to 16 colors as well
 146 (defun x-display-color-cells (&optional frame) 16)
 147 (defun x-server-max-request-size (&optional frame) 1000000) ; ???
 148 (defun x-server-vendor (&optional frame) t "GNU")
 149 (defun x-server-version (&optional frame) '(1 0 0))
 150 (defun x-display-screens (&optional frame) 1)
 151 (defun x-display-mm-height (&optional frame) 245) ; Guess the size of my
 152 (defun x-display-mm-width (&optional frame) 322)  ; monitor, EZ...
 153 (defun x-display-backing-store (&optional frame) 'not-useful)
 154 (defun x-display-visual-class (&optional frame) 'static-color)
 155 (fset 'x-display-save-under 'ignore)
 156 (fset 'x-get-resource 'ignore)
 157
 158 ;; From lisp/term/x-win.el
 159 (defvar x-display-name "pc"
 160   "The display name specifying the MS-DOS display and frame type.")
 161 (setq split-window-keep-point t)
 162 (defvar x-colors (mapcar 'car msdos-color-values)
 163   "The list of colors available on a PC display under MS-DOS.")
 164
 165 ;; From lisp/term/w32-win.el
 166 ;
 167 ;;;; Selections and cut buffers
 168 ;
 169 ;;; We keep track of the last text selected here, so we can check the
 170 ;;; current selection against it, and avoid passing back our own text
 171 ;;; from x-cut-buffer-or-selection-value.
 172 (defvar x-last-selected-text nil)
 173
 174 (defcustom x-select-enable-clipboard t
 175   "Non-nil means cutting and pasting uses the clipboard.
 176 This is the default on this system, since MS-Windows does not
 177 support other types of selections."
 178   :type 'boolean
 179   :group 'killing)
 180
 181 (defun x-select-text (text &optional push)
 182   (if x-select-enable-clipboard
 183       (w16-set-clipboard-data text))
 184   (setq x-last-selected-text text))
 185
 186 ;;; Return the value of the current selection.
 187 ;;; Consult the selection, then the cut buffer.  Treat empty strings
 188 ;;; as if they were unset.
 189 (defun x-get-selection-value ()
 190   (if x-select-enable-clipboard
 191       (let (text)
 192         ;; Don't die if x-get-selection signals an error.
 193         (condition-case c
 194             (setq text (w16-get-clipboard-data))
 195           (error (message "w16-get-clipboard-data:%s" c)))
 196         (if (string= text "") (setq text nil))
 197         (cond
 198          ((not text) nil)
 199          ((eq text x-last-selected-text) nil)
 200          ((string= text x-last-selected-text)
 201           ;; Record the newer string, so subsequent calls can use the 'eq' test.
 202           (setq x-last-selected-text text)
 203           nil)
 204          (t
 205           (setq x-last-selected-text text))))))
 206
 207 ;;; Arrange for the kill and yank functions to set and check the clipboard.
 208 (setq interprogram-cut-function 'x-select-text)
 209 (setq interprogram-paste-function 'x-get-selection-value)
 210
 211 ;; From lisp/faces.el: we only have one font, so always return
 212 ;; it, no matter which variety they've asked for.
 213 (defun x-frob-font-slant (font which)
 214   font)
 215 (defun x-frob-font-weight (font which)
 216   font)
 217 (defun x-font-family-list ()
 218   "Return a list of available font families on FRAME.\n\
 219 If FRAME is omitted or nil, use the selected frame.\n\
 220 Value is a list of conses (FAMILY . FIXED-P) where FAMILY\n\
 221 is a font family, and FIXED-P is non-nil if fonts of that family\n\
 222 are fixed-pitch."
 223   '(("default" . t)))
 224
 225 ;; From src/fontset.c:
 226 (fset 'query-fontset 'ignore)
 227
 228 ;; From lisp/term/x-win.el: make iconify-or-deiconify-frame a no-op.
 229 (fset 'iconify-or-deiconify-frame 'ignore)
 230
 231 ;; From lisp/frame.el
 232 (fset 'set-default-font 'ignore)
 233 (fset 'set-mouse-color 'ignore)         ; We cannot, I think.
 234 (fset 'set-cursor-color 'ignore)        ; Hardware determined by char under.
 235 (fset 'set-border-color 'ignore)        ; Not useful.
 236
 237 ;; ---------------------------------------------------------------------------
 238
 239 ;;; pc-win.el ends here