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 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, or (at your option)
  14 ;; 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; see the file COPYING.  If not, write to the
  23 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  24 ;; Boston, MA 02110-1301, USA.
  25
  26 ;;; Commentary:
  27
  28 ;;; Code:
  29
  30 (load "term/internal" nil t)
  31
  32 (declare-function msdos-remember-default-colors) ;; Defined in C.
  33 (declare-function w16-set-clipboard-data)        ;; Defined in C.
  34 (declare-function w16-get-clipboard-data)        ;; Defined in C.
  35
  36 ;;; This is copied from etc/rgb.txt, except that some values were changed
  37 ;;; a bit to make them consistent with DOS console colors, and the RGB
  38 ;;; values were scaled up to 16 bits, as `tty-define-color' requires.
  39 ;;;
  40 ;;; The mapping between the 16 standard EGA/VGA colors and X color names
  41 ;;; was done by running a Unix version of Emacs inside an X client and a
  42 ;;; DJGPP-compiled Emacs on the same PC.  The names of X colors used to
  43 ;;; define the pixel values are shown as comments to each color below.
  44 ;;;
  45 ;;; If you want to change the RGB values, keep in mind that various pieces
  46 ;;; of Emacs think that a color whose RGB values add up to less than 0.6 of
  47 ;;; the values for WHITE (i.e. less than 117963) are ``dark'', otherwise the
  48 ;;; color is ``light''; see `frame-set-background-mode' in lisp/faces.el for
  49 ;;; an example.
  50 (defvar msdos-color-values
  51   '(("black"          0     0     0     0)
  52     ("blue"           1     0     0 52480) ; MediumBlue
  53     ("green"          2  8704 35584  8704) ; ForestGreen
  54     ("cyan"           3     0 52736 53504) ; DarkTurquoise
  55     ("red"            4 45568  8704  8704) ; FireBrick
  56     ("magenta"        5 35584     0 35584) ; DarkMagenta
  57     ("brown"          6 40960 20992 11520) ; Sienna
  58     ("lightgray"      7 48640 48640 48640) ; Gray
  59     ("darkgray"       8 26112 26112 26112) ; Gray40
  60     ("lightblue"      9     0     0 65535) ; Blue
  61     ("lightgreen"    10     0 65535     0) ; Green
  62     ("lightcyan"     11     0 65535 65535) ; Cyan
  63     ("lightred"      12 65535     0     0) ; Red
  64     ("lightmagenta"  13 65535     0 65535) ; Magenta
  65     ("yellow"        14 65535 65535     0) ; Yellow
  66     ("white"         15 65535 65535 65535))
  67   "A list of MS-DOS console colors, their indices and 16-bit RGB values.")
  68
  69 ;; ---------------------------------------------------------------------------
  70 ;; We want to delay setting frame parameters until the faces are setup
  71 (defvar default-frame-alist nil)
  72 (modify-frame-parameters terminal-frame default-frame-alist)
  73 (tty-color-clear)
  74
  75 (defun msdos-face-setup ()
  76   (set-face-foreground 'bold "yellow" terminal-frame)
  77   (set-face-foreground 'italic "red" terminal-frame)
  78   (set-face-foreground 'bold-italic "lightred" terminal-frame)
  79   (set-face-foreground 'underline "white" terminal-frame)
  80
  81   (make-face 'msdos-menu-active-face)
  82   (make-face 'msdos-menu-passive-face)
  83   (make-face 'msdos-menu-select-face)
  84   (set-face-foreground 'msdos-menu-active-face "white" terminal-frame)
  85   (set-face-foreground 'msdos-menu-passive-face "lightgray" terminal-frame)
  86   (set-face-background 'msdos-menu-active-face "blue" terminal-frame)
  87   (set-face-background 'msdos-menu-passive-face "blue" terminal-frame)
  88   (set-face-background 'msdos-menu-select-face "red" terminal-frame))
  89
  90 (add-hook 'before-init-hook 'msdos-face-setup)
  91
  92 (defun msdos-handle-reverse-video (frame parameters)
  93   "Handle the reverse-video frame parameter on MS-DOS frames."
  94   (when (cdr (or (assq 'reverse parameters)
  95                  (assq 'reverse default-frame-alist)))
  96       (let* ((params (frame-parameters frame))
  97              (fg (cdr (assq 'foreground-color params)))
  98              (bg (cdr (assq 'background-color params))))
  99         (if (equal fg (cdr (assq 'mouse-color params)))
 100             (modify-frame-parameters frame
 101                                      (list (cons 'mouse-color bg))))
 102         (if (equal fg (cdr (assq 'cursor-color params)))
 103             (modify-frame-parameters frame
 104                                      (list (cons 'cursor-color bg)))))))
 105
 106 ;; This must run after all the default colors are inserted into
 107 ;; tty-color-alist, since msdos-handle-reverse-video needs to know the
 108 ;; actual frame colors.  tty-color-alist is set up by startup.el, but
 109 ;; only after it runs before-init-hook and after-init-hook.
 110 (defun msdos-setup-initial-frame ()
 111   (modify-frame-parameters terminal-frame default-frame-alist)
 112   ;; This remembers the screen colors after applying default-frame-alist,
 113   ;; so that all subsequent frames could begin with those colors.
 114   (msdos-remember-default-colors terminal-frame)
 115   (modify-frame-parameters terminal-frame initial-frame-alist)
 116   (msdos-handle-reverse-video terminal-frame
 117                               (frame-parameters terminal-frame))
 118
 119   (frame-set-background-mode terminal-frame)
 120   (face-set-after-frame-default terminal-frame))
 121
 122 (add-hook 'term-setup-hook 'msdos-setup-initial-frame)
 123
 124 ;; We create frames as if we were a terminal, but with a twist.
 125 (defun make-msdos-frame (&optional parameters)
 126   (let ((frame (make-terminal-frame parameters))
 127         success)
 128     (unwind-protect
 129         (progn
 130           (msdos-handle-reverse-video frame (frame-parameters frame))
 131           (frame-set-background-mode frame)
 132           (face-set-after-frame-default frame)
 133           (setq success t))
 134       (unless success (delete-frame frame)))
 135     frame))
 136
 137 (add-to-list 'frame-creation-function-alist '(pc . make-msdos-frame))
 138
 139 ;; ---------------------------------------------------------------------------
 140 ;; More or less useful imitations of certain X-functions.  A lot of the
 141 ;; values returned are questionable, but usually only the form of the
 142 ;; returned value matters.  Also, by the way, recall that `ignore' is
 143 ;; a useful function for returning 'nil regardless of argument.
 144
 145 ;; From src/xfns.c
 146 (defun x-list-fonts (pattern &optional face frame maximum width)
 147   (if (or (null width) (and (numberp width) (= width 1)))
 148       (list "ms-dos")
 149     (list "no-such-font")))
 150 (defun x-display-pixel-width (&optional frame) (frame-width frame))
 151 (defun x-display-pixel-height (&optional frame) (frame-height frame))
 152 (defun x-display-planes (&optional frame) 4) ;bg switched to 16 colors as well
 153 (defun x-display-color-cells (&optional frame) 16)
 154 (defun x-server-max-request-size (&optional frame) 1000000) ; ???
 155 (defun x-server-vendor (&optional frame) t "GNU")
 156 (defun x-server-version (&optional frame) '(1 0 0))
 157 (defun x-display-screens (&optional frame) 1)
 158 (defun x-display-mm-height (&optional frame) 245) ; Guess the size of my
 159 (defun x-display-mm-width (&optional frame) 322)  ; monitor, EZ...
 160 (defun x-display-backing-store (&optional frame) 'not-useful)
 161 (defun x-display-visual-class (&optional frame) 'static-color)
 162 (fset 'x-display-save-under 'ignore)
 163 (fset 'x-get-resource 'ignore)
 164
 165 ;; From lisp/term/x-win.el
 166 (defvar x-display-name "pc"
 167   "The display name specifying the MS-DOS display and frame type.")
 168 (setq split-window-keep-point t)
 169 (defvar x-colors (mapcar 'car msdos-color-values)
 170   "The list of colors available on a PC display under MS-DOS.")
 171
 172 ;; From lisp/term/w32-win.el
 173 ;
 174 ;;;; Selections and cut buffers
 175 ;
 176 ;;; We keep track of the last text selected here, so we can check the
 177 ;;; current selection against it, and avoid passing back our own text
 178 ;;; from x-cut-buffer-or-selection-value.
 179 (defvar x-last-selected-text nil)
 180
 181 (defcustom x-select-enable-clipboard t
 182   "Non-nil means cutting and pasting uses the clipboard.
 183 This is the default on this system, since MS-Windows does not
 184 support other types of selections."
 185   :type 'boolean
 186   :group 'killing)
 187
 188 (defun x-select-text (text &optional push)
 189   (if x-select-enable-clipboard
 190       (w16-set-clipboard-data text))
 191   (setq x-last-selected-text text))
 192
 193 ;;; Return the value of the current selection.
 194 ;;; Consult the selection, then the cut buffer.  Treat empty strings
 195 ;;; as if they were unset.
 196 (defun x-get-selection-value ()
 197   (if x-select-enable-clipboard
 198       (let (text)
 199         ;; Don't die if x-get-selection signals an error.
 200         (condition-case c
 201             (setq text (w16-get-clipboard-data))
 202           (error (message "w16-get-clipboard-data:%s" c)))
 203         (if (string= text "") (setq text nil))
 204         (cond
 205          ((not text) nil)
 206          ((eq text x-last-selected-text) nil)
 207          ((string= text x-last-selected-text)
 208           ;; Record the newer string, so subsequent calls can use the 'eq' test.
 209           (setq x-last-selected-text text)
 210           nil)
 211          (t
 212           (setq x-last-selected-text text))))))
 213
 214 ;;; Arrange for the kill and yank functions to set and check the clipboard.
 215 (setq interprogram-cut-function 'x-select-text)
 216 (setq interprogram-paste-function 'x-get-selection-value)
 217
 218 ;; From lisp/faces.el: we only have one font, so always return
 219 ;; it, no matter which variety they've asked for.
 220 (defun x-frob-font-slant (font which)
 221   font)
 222 (make-obsolete 'x-frob-font-slant 'make-face-... "21.1")
 223 (defun x-frob-font-weight (font which)
 224   font)
 225 (make-obsolete 'x-frob-font-weight 'make-face-... "21.1")
 226 (defun x-font-family-list ()
 227   "Return a list of available font families on FRAME.\n\
 228 If FRAME is omitted or nil, use the selected frame.\n\
 229 Value is a list of conses (FAMILY . FIXED-P) where FAMILY\n\
 230 is a font family, and FIXED-P is non-nil if fonts of that family\n\
 231 are fixed-pitch."
 232   '(("default" . t)))
 233
 234 ;; From src/fontset.c:
 235 (fset 'query-fontset 'ignore)
 236
 237 ;; From lisp/term/x-win.el: make iconify-or-deiconify-frame a no-op.
 238 (fset 'iconify-or-deiconify-frame 'ignore)
 239
 240 ;; From lisp/frame.el
 241 (fset 'set-default-font 'ignore)
 242 (fset 'set-mouse-color 'ignore)         ; We cannot, I think.
 243 (fset 'set-cursor-color 'ignore)        ; Hardware determined by char under.
 244 (fset 'set-border-color 'ignore)        ; Not useful.
 245
 246 ;; ---------------------------------------------------------------------------
 247
 248 ;;; arch-tag: 5cbdb455-b495-427b-95d0-e417d77d00b4
 249 ;;; pc-win.el ends here