mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-27 07:37:33 +00:00
90 lines
3.2 KiB
EmacsLisp
90 lines
3.2 KiB
EmacsLisp
;;; dynamic-setting.el --- Support dynamic changes -*- lexical-binding: t -*-
|
|
|
|
;; Copyright (C) 2009-2023 Free Software Foundation, Inc.
|
|
|
|
;; Author: Jan Djärv <jan.h.d@swipnet.se>
|
|
;; Maintainer: emacs-devel@gnu.org
|
|
;; Keywords: font, system-font, tool-bar-style
|
|
;; Package: emacs
|
|
|
|
;; This file is part of GNU Emacs.
|
|
|
|
;; GNU Emacs 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 3 of the License, or
|
|
;; (at your option) any later version.
|
|
|
|
;; GNU Emacs 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 GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
|
|
|
|
;;; Commentary:
|
|
|
|
;; This file provides the Lisp part of the GConf and XSetting code in
|
|
;; xsetting.c. But there is nothing that prevents it from being used by
|
|
;; other configuration schemes.
|
|
|
|
;;; Code:
|
|
|
|
;;; Customizable variables
|
|
|
|
(declare-function font-get-system-font "xsettings.c" ())
|
|
|
|
(defvar font-use-system-font)
|
|
|
|
(defun font-setting-change-default-font (display-or-frame set-font)
|
|
"Change font and/or font settings for frames on display DISPLAY-OR-FRAME.
|
|
If DISPLAY-OR-FRAME is a frame, the display is the one for that frame.
|
|
|
|
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)))
|
|
(frame-list (frames-on-display-list display-or-frame)))
|
|
(when (and new-font (display-graphic-p display-or-frame))
|
|
(clear-font-cache)
|
|
(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 reconsider the existing fonts on all frames on each
|
|
;; display, by clearing the font and face caches. This will
|
|
;; cause all fonts to be recreated.
|
|
(dolist (frame frame-list)
|
|
(reconsider-frame-fonts frame))))))
|
|
|
|
(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))
|
|
(display-name (nth 2 event)))
|
|
(cond ((and (eq type 'monospace-font-name) font-use-system-font)
|
|
(font-setting-change-default-font display-name t))
|
|
|
|
((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)
|
|
|
|
(provide 'dynamic-setting)
|
|
;;; dynamic-setting.el ends here
|