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;;; exwm-core.el --- Core definitions -*- lexical-binding: t -*-
;; Copyright (C) 2015-2016 Free Software Foundation, Inc.
;; Author: Chris Feng <chris.w.feng@gmail.com>
;; 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 <http://www.gnu.org/licenses/>.
;;; Commentary:
;; This module includes core definitions of variables, macros, functions, etc
;; shared by various other modules.
;;; Code:
(require 'xcb)
(require 'xcb-icccm)
(require 'xcb-ewmh)
(eval-and-compile
(defvar exwm-debug-on nil "Non-nil to turn on debug for EXWM."))
(defmacro exwm--log (format-string &rest args)
"Print debug message."
(when exwm-debug-on
`(message (concat "[EXWM] " ,format-string) ,@args)))
(defmacro exwm--debug (&rest forms)
(when exwm-debug-on `(progn ,@forms)))
(defvar exwm--connection nil "X connection.")
(defvar exwm--root nil "Root window.")
(defvar exwm--id-buffer-alist nil "Alist of (<X window ID> . <Emacs buffer>).")
(defsubst exwm--id->buffer (id)
"X window ID => Emacs buffer."
(cdr (assoc id exwm--id-buffer-alist)))
(defsubst exwm--buffer->id (buffer)
"Emacs buffer BUFFER => X window ID."
(car (rassoc buffer exwm--id-buffer-alist)))
(defun exwm--lock (&rest _args)
"Lock (disable all events)."
(xcb:+request exwm--connection
(make-instance 'xcb:ChangeWindowAttributes
:window exwm--root
:value-mask xcb:CW:EventMask
:event-mask xcb:EventMask:NoEvent))
(xcb:flush exwm--connection))
(defun exwm--unlock (&rest _args)
"Unlock (enable all events)."
(xcb:+request exwm--connection
(make-instance 'xcb:ChangeWindowAttributes
:window exwm--root
:value-mask xcb:CW:EventMask
:event-mask (eval-when-compile
(logior xcb:EventMask:SubstructureRedirect
xcb:EventMask:StructureNotify))))
(xcb:flush exwm--connection))
(defconst exwm--client-event-mask
(eval-when-compile
(logior xcb:EventMask:StructureNotify xcb:EventMask:PropertyChange))
"Event mask set on all managed windows.")
;; Internal variables
(defvar-local exwm--id nil) ;window ID
(defvar-local exwm--container nil) ;container
(defvar-local exwm--frame nil) ;workspace frame
(defvar-local exwm--floating-frame nil) ;floating frame
(defvar-local exwm--mode-line-format nil) ;save mode-line-format
(defvar-local exwm--fullscreen nil) ;used in fullscreen
(defvar-local exwm--floating-frame-position nil) ;used in fullscreen
(defvar-local exwm--fixed-size nil) ;fixed size
(defvar-local exwm--on-KeyPress ;KeyPress event handler
#'exwm-input--on-KeyPress-line-mode)
;; Properties
(defvar-local exwm-window-type nil "_NET_WM_WINDOW_TYPE.")
(defvar-local exwm--geometry nil)
(defvar-local exwm-class-name nil "Class name in WM_CLASS.")
(defvar-local exwm-instance-name nil "Instance name in WM_CLASS.")
(defvar-local exwm-title nil "Window title (either _NET_WM_NAME or WM_NAME)")
(defvar-local exwm--title-is-utf8 nil)
(defvar-local exwm-transient-for nil "WM_TRANSIENT_FOR.")
(defvar-local exwm--protocols nil)
(defvar-local exwm-state nil "WM_STATE.")
;; _NET_WM_NORMAL_HINTS
(defvar-local exwm--normal-hints-x nil)
(defvar-local exwm--normal-hints-y nil)
(defvar-local exwm--normal-hints-width nil)
(defvar-local exwm--normal-hints-height nil)
(defvar-local exwm--normal-hints-min-width nil)
(defvar-local exwm--normal-hints-min-height nil)
(defvar-local exwm--normal-hints-max-width nil)
(defvar-local exwm--normal-hints-max-height nil)
;; (defvar-local exwm--normal-hints-win-gravity nil)
;; WM_HINTS
(defvar-local exwm--hints-input nil) ;FIXME
(defvar-local exwm--hints-urgency nil)
;; _MOTIF_WM_HINTS
(defvar-local exwm--mwm-hints nil)
(defvar exwm-mode-map
(let ((map (make-sparse-keymap)))
(define-key map "\C-ck" #'exwm-input-release-keyboard)
(define-key map "\C-cf" #'exwm-layout-set-fullscreen)
(define-key map "\C-cm" #'exwm-floating-toggle-floating)
(define-key map "\C-cq" #'exwm-input-send-next-key)
(define-key map "\C-cv" #'exwm-workspace-move-window)
(define-key map "\C-cM" #'exwm-layout-toggle-mode-line)
map)
"Keymap for `exwm-mode'.")
(define-derived-mode exwm-mode nil "EXWM"
"Major mode for managing X windows.
\\{exwm-mode-map}"
;;
(setq mode-name
'(:eval (propertize "EXWM" 'face
(when (cl-some (lambda (i)
(frame-parameter i
'exwm--urgency))
exwm-workspace--list)
'font-lock-warning-face))))
;; Change major-mode is not allowed
(add-hook 'change-major-mode-hook #'kill-buffer nil t)
;; Kill buffer -> close window
(add-hook 'kill-buffer-query-functions
#'exwm-manage--kill-buffer-query-function nil t)
(setq buffer-read-only t
left-margin-width nil
right-margin-width nil
left-fringe-width 0
right-fringe-width 0
vertical-scroll-bar nil))
(provide 'exwm-core)
;;; exwm-core.el ends here
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