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