;;; dynamic-setting.el --- Support dynamic changes
-;; Copyright (C) 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 2009-2012 Free Software Foundation, Inc.
;; Author: Jan Djärv <jan.h.d@swipnet.se>
;; Maintainer: FSF
;; Keywords: font, system-font, tool-bar-style
+;; Package: emacs
;; This file is part of GNU Emacs.
If SET-FONT is non-nil, change the font for frames. Otherwise re-apply the
current form for the frame (i.e. hinting or somesuch changed)."
-
(let ((new-font (and (fboundp 'font-get-system-font)
- (font-get-system-font))))
- (when new-font
- ;; Be careful here: when set-face-attribute is called for the
- ;; :font attribute, Emacs tries to guess the best matching font
- ;; by examining the other face attributes (Bug#2476).
-
+ (font-get-system-font)))
+ (frame-list (frames-on-display-list display-or-frame)))
+ (when (and new-font (display-graphic-p display-or-frame))
(clear-font-cache)
- ;; Set for current frames. Only change font for those that have
- ;; the old font now. If they don't have the old font, the user
- ;; probably changed it.
- (dolist (f (frames-on-display-list display-or-frame))
- (if (display-graphic-p f)
- (let* ((frame-font
- (or (font-get (face-attribute 'default :font f
- 'default) :user-spec)
- (frame-parameter f 'font-parameter)))
- (font-to-set
- (if set-font new-font
- ;; else set font again, hinting etc. may have changed.
- frame-font)))
- (if font-to-set
- (progn
- (message "setting %s" font-to-set)
- (set-frame-parameter f 'font-parameter font-to-set)
- (set-face-attribute 'default f
- :width 'normal
- :weight 'normal
- :slant 'normal
- :font font-to-set))))))
-
- ;; Set for future frames.
- (set-face-attribute 'default t :font new-font)
- (let ((spec (list (list t (face-attr-construct 'default)))))
- (progn
- (put 'default 'customized-face spec)
- (custom-push-theme 'theme-face 'default 'user 'set spec)
- (put 'default 'face-modified nil))))))
+ (if set-font
+ ;; Set the font on all current and future frames, as though
+ ;; the `default' face had been "set for this session":
+ (set-frame-font new-font nil frame-list)
+ ;; Just redraw the existing fonts on all frames:
+ (dolist (f frame-list)
+ (let ((frame-font
+ (or (font-get (face-attribute 'default :font f 'default)
+ :user-spec)
+ (frame-parameter f 'font-parameter))))
+ (when frame-font
+ (set-frame-parameter f 'font-parameter frame-font)
+ (set-face-attribute 'default f
+ :width 'normal
+ :weight 'normal
+ :slant 'normal
+ :font frame-font))))))))
(defun dynamic-setting-handle-config-changed-event (event)
"Handle config-changed-event on the display in EVENT.
Changes can be
The monospace font. If `font-use-system-font' is nil, the font
is not changed.
+ The normal font.
Xft parameters, like DPI and hinting.
+ The Gtk+ theme name.
The tool bar style."
(interactive "e")
(let ((type (nth 1 event))
((eq type 'font-render)
(font-setting-change-default-font display-name nil))
+ ;; This is a bit heavy, ideally we would just clear faces
+ ;; on the affected display, and perhaps only the relevant
+ ;; faces. Oh well.
+ ((eq type 'theme-name) (clear-face-cache))
+
((eq type 'tool-bar-style) (force-mode-line-update t)))))
(define-key special-event-map [config-changed-event]
'dynamic-setting-handle-config-changed-event)
-;; arch-tag: 3a57e78f-1cd6-48b6-ab75-98f160dcc017