diff lisp/msw-faces.el @ 428:3ecd8885ac67 r21-2-22

Import from CVS: tag r21-2-22
author cvs
date Mon, 13 Aug 2007 11:28:15 +0200
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children abe6d1db359e
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lisp/msw-faces.el	Mon Aug 13 11:28:15 2007 +0200
@@ -0,0 +1,191 @@
+;;; msw-faces.el --- mswindows-specific face stuff.
+
+;;; Copyright (C) 1992, 1993, 1994 Free Software Foundation, Inc.
+;;; Copyright (C) 1995, 1996 Ben Wing.
+
+;; Author: Jamie Zawinski
+;; Modified by:  Chuck Thompson
+;; Modified by:  Ben Wing
+;; Modified by:  Martin Buchholz
+;; Rewritten for mswindows by:  Jonathan Harris
+
+;; This file is part of XEmacs.
+
+;; XEmacs is free software; you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation; either version 2, or (at your option)
+;; any later version.
+
+;; XEmacs is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+;; General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with XEmacs; see the file COPYING.  If not, write to the 
+;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+;; Boston, MA 02111-1307, USA.
+
+;; This file does the magic to parse mswindows font names, and make sure that
+;; the default and modeline attributes of new frames are specified enough.
+
+;;; Force creation of the default face font so that if it fails we get an
+;;; error now instead of a crash at frame creation.
+(defun mswindows-init-device-faces (device)
+  (unless (face-font-instance 'default device)
+    (error "Can't find a suitable default font")))
+
+
+(defun mswindows-init-frame-faces (frame)
+  )
+
+;; Other functions expect these regexps
+(defconst mswindows-font-regexp
+  (let
+      ((- 		":")
+       (fontname	"\\([a-zA-Z ]+\\)")
+       (weight	"\\([a-zA-Z]*\\)?")
+       (style	"\\( [a-zA-Z]*\\)?")
+       (pointsize	"\\([0-9]+\\)?")
+       (effects	"\\([a-zA-Z ]*\\)?")
+       (charset	"\\([a-zA-Z 0-9]*\\)")
+       )
+    (concat "^"
+	    fontname - weight style - pointsize - effects - charset "$")))
+
+;;; Fill in missing parts of a font spec. This is primarily intended as a
+;;; helper function for the functions below.
+;;; mswindows fonts look like:
+;;;	fontname[:[weight][ style][:pointsize[:effects]]][:charset]
+;;; A minimal mswindows font spec looks like:
+;;;	Courier New
+;;; A maximal mswindows font spec looks like:
+;;;	Courier New:Bold Italic:10:underline strikeout:Western
+;;; Missing parts of the font spec should be filled in with these values:
+;;;	Courier New:Regular:10::Western
+(defun mswindows-font-canonicalize-name (font)
+  "Given a mswindows font or font name, this returns its name in
+canonical form."
+  (if (or (font-instance-p font)
+	  (stringp font))
+      (let ((name (if (font-instance-p font) 
+		      (font-instance-name font)
+		    font)))
+	(cond ((string-match
+		"^[a-zA-Z ]+:[a-zA-Z ]*:[0-9]+:[a-zA-Z ]*:[a-zA-Z 0-9]*$"
+		name) name)
+	      ((string-match "^[a-zA-Z ]+:[a-zA-Z ]*:[0-9]+:[a-zA-Z ]*$"
+			     name) (concat name ":Western"))
+	      ((string-match "^[a-zA-Z ]+:[a-zA-Z ]*:[0-9]+$" name)
+	       (concat name "::Western"))
+	      ((string-match "^[a-zA-Z ]+:[a-zA-Z ]*$" name)
+	       (concat name ":10::Western"))
+	      ((string-match "^[a-zA-Z ]+$" name)
+	       (concat name ":Regular:10::Western"))
+	      (t "Courier New:Regular:10::Western")))))
+
+(defun mswindows-make-font-bold (font &optional device)
+  "Given a mswindows font specification, this attempts to make a bold font.
+If it fails, it returns nil."
+  (if (font-instance-p font)
+      (let ((name (mswindows-font-canonicalize-name font))
+	    (oldwidth (font-instance-width font)))
+	(string-match "^[a-zA-Z ]+:\\([a-zA-Z ]*\\):" name)
+	(let ((newfont (make-font-instance
+			(concat (substring name 0 (match-beginning 1))
+				"Bold" (substring name (match-end 1)))
+		       device t)))
+; Hack! on mswindows, bold fonts (even monospaced) are often wider than the
+; equivalent non-bold font. Making the bold font one point smaller usually
+; makes it the same width (maybe at the expense of making it one pixel shorter)
+	  (if (font-instance-p newfont)
+	      (if (> (font-instance-width newfont) oldwidth)
+		  (mswindows-find-smaller-font newfont device)
+		newfont))))))
+
+(defun mswindows-make-font-unbold (font &optional device)
+  "Given a mswindows font specification, this attempts to make a non-bold font.
+If it fails, it returns nil."
+  (if (font-instance-p font)
+      (let ((name (mswindows-font-canonicalize-name font)))
+	(string-match "^[a-zA-Z ]+:\\([a-zA-Z ]*\\):" name)
+	(make-font-instance (concat
+			     (substring name 0 (match-beginning 1))
+			     "Regular" (substring name (match-end 1)))
+			    device t))))
+
+(defun mswindows-make-font-italic (font &optional device)
+  "Given a mswindows font specification, this attempts to make an `italic'
+font. If it fails, it returns nil."
+  (if (font-instance-p font)
+      (let ((name (mswindows-font-canonicalize-name font)))
+	(string-match "^[a-zA-Z ]+:\\([a-zA-Z ]*\\):" name)
+	(make-font-instance (concat
+			     (substring name 0 (match-beginning 1))
+			     "Italic" (substring name (match-end 1)))
+			    device t))))
+
+(defun mswindows-make-font-unitalic (font &optional device)
+  "Given a mswindows font specification, this attempts to make a non-italic
+font. If it fails, it returns nil."
+  (if (font-instance-p font)
+      (let ((name (mswindows-font-canonicalize-name font)))
+	(string-match "^[a-zA-Z ]+:\\([a-zA-Z ]*\\):" name)
+	(make-font-instance (concat
+			     (substring name 0 (match-beginning 1))
+			     "Regular" (substring name (match-end 1)))
+			    device t))))
+
+(defun mswindows-make-font-bold-italic (font &optional device)
+  "Given a mswindows font specification, this attempts to make a `bold-italic'
+font. If it fails, it returns nil."
+  (if (font-instance-p font)
+      (let ((name (mswindows-font-canonicalize-name font))
+	    (oldwidth (font-instance-width font)))
+	(string-match "^[a-zA-Z ]+:\\([a-zA-Z ]*\\):" name)
+	(let ((newfont (make-font-instance
+			(concat (substring name 0 (match-beginning 1))
+				"Bold Italic" (substring name (match-end 1)))
+		       device t)))
+; Hack! on mswindows, bold fonts (even monospaced) are often wider than the
+; equivalent non-bold font. Making the bold font one point smaller usually
+; makes it the same width (maybe at the expense of making it one pixel shorter)
+	  (if (font-instance-p newfont)
+	      (if (> (font-instance-width newfont) oldwidth)
+		  (mswindows-find-smaller-font newfont device)
+		newfont))))))
+
+(defun mswindows-find-smaller-font (font &optional device)
+  "Loads a new version of the given font (or font name) 1 point smaller.
+Returns the font if it succeeds, nil otherwise."
+  (if (stringp font) (setq font (make-font-instance font device)))
+  (if (font-instance-p font) (setq font (font-instance-truename font)))
+  (if (stringp font) (setq font (make-font-instance font device)))
+  (if (font-instance-p font)
+      (let (old-size (name (mswindows-font-canonicalize-name font)))
+	(string-match "^[a-zA-Z ]+:[a-zA-Z ]*:\\([0-9]+\\):" name)
+	(setq old-size (string-to-int
+			(substring name (match-beginning 1) (match-end 1))))
+	(if (> old-size 0)
+	    (make-font-instance (concat
+				 (substring name 0 (match-beginning 1))
+				 (int-to-string (- old-size 1))
+				 (substring name (match-end 1)))
+				device t)))))
+
+(defun mswindows-find-larger-font (font &optional device)
+  "Loads a new version of the given font (or font name) 1 point larger.
+Returns the font if it succeeds, nil otherwise."
+  (if (stringp font) (setq font (make-font-instance font device)))
+  (if (font-instance-p font) (setq font (font-instance-truename font)))
+  (if (stringp font) (setq font (make-font-instance font device)))
+  (if (font-instance-p font)
+      (let (old-size (name (mswindows-font-canonicalize-name font)))
+	(string-match "^[a-zA-Z ]+:[a-zA-Z ]*:\\([0-9]+\\):" name)
+	(setq old-size (string-to-int
+			(substring name (match-beginning 1) (match-end 1))))
+	(make-font-instance (concat
+			     (substring name 0 (match-beginning 1))
+			     (int-to-string (+ old-size 1))
+			     (substring name (match-end 1)))
+			    device t))))