589b840409
* exwm-manage.el (exwm-manage--unmanage-window): Make sure to use the correct context to read/set buffer-local variables when killing buffers.
731 lines
34 KiB
EmacsLisp
731 lines
34 KiB
EmacsLisp
;;; exwm-manage.el --- Window Management Module for -*- lexical-binding: t -*-
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;;; EXWM
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;; Copyright (C) 2015-2017 Free Software Foundation, Inc.
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;; Author: Chris Feng <chris.w.feng@gmail.com>
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;; This is the fundamental module of EXWM that deals with window management.
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;;; Code:
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(require 'exwm-core)
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(defvar exwm-manage-force-tiling nil
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"Non-nil to force managing all X windows in tiling layout.
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You can still make the X windows floating afterwards.")
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(defvar exwm-manage-finish-hook nil
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"Normal hook run after a window is just managed, in the context of the
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corresponding buffer.")
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(defvar exwm-manage--desktop nil "The desktop X window.")
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(defun exwm-manage--update-geometry (id &optional force)
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"Update window geometry."
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(with-current-buffer (exwm--id->buffer id)
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(unless (and exwm--geometry (not force))
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(let ((reply (xcb:+request-unchecked+reply exwm--connection
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(make-instance 'xcb:GetGeometry :drawable id))))
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(when reply ;nil when destroyed
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(setq exwm--geometry reply))))))
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(defun exwm-manage--update-ewmh-state (id)
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"Update _NET_WM_STATE."
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(with-current-buffer (exwm--id->buffer id)
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(unless exwm--ewmh-state
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(let ((reply (xcb:+request-unchecked+reply exwm--connection
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(make-instance 'xcb:ewmh:get-_NET_WM_STATE
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:window id))))
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(when reply
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(setq exwm--ewmh-state (append (slot-value reply 'value) nil)))))))
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;; The _MOTIF_WM_HINTS atom (see <Xm/MwmUtil.h> for more details)
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;; It's currently only used in 'exwm-manage' module
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(defvar exwm-manage--_MOTIF_WM_HINTS nil "_MOTIF_WM_HINTS atom.")
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(defun exwm-manage--update-mwm-hints (id &optional force)
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"Update _MOTIF_WM_HINTS."
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(with-current-buffer (exwm--id->buffer id)
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(unless (and (not exwm--mwm-hints-decorations) (not force))
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(let ((reply (xcb:+request-unchecked+reply exwm--connection
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(make-instance 'xcb:icccm:-GetProperty
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:window id
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:property exwm-manage--_MOTIF_WM_HINTS
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:type exwm-manage--_MOTIF_WM_HINTS
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:long-length 5))))
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(when reply
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;; Check MotifWmHints.decorations.
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(with-slots (value) reply
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(setq value (append value nil))
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(when (and value
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;; See <Xm/MwmUtil.h> for fields definitions.
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(/= 0 (logand
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(elt value 0) ;MotifWmHints.flags
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2)) ;MWM_HINTS_DECORATIONS
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(= 0
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(elt value 2))) ;MotifWmHints.decorations
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(setq exwm--mwm-hints-decorations nil))))))))
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(defun exwm-manage--set-client-list ()
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"Set _NET_CLIENT_LIST."
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(xcb:+request exwm--connection
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(make-instance 'xcb:ewmh:set-_NET_CLIENT_LIST
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:window exwm--root
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:data (vconcat (mapcar #'car exwm--id-buffer-alist)))))
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(defvar exwm-floating--border-colormap)
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(defvar exwm-floating--border-pixel)
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(defvar exwm-workspace--current)
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(defvar exwm-workspace--switch-history-outdated)
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(defvar exwm-workspace-current-index)
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(defvar exwm-workspace--workareas)
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(declare-function exwm--update-window-type "exwm.el" (id &optional force))
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(declare-function exwm--update-class "exwm.el" (id &optional force))
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(declare-function exwm--update-transient-for "exwm.el" (id &optional force))
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(declare-function exwm--update-normal-hints "exwm.el" (id &optional force))
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(declare-function exwm--update-title "exwm.el" (id))
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(declare-function exwm--update-hints "exwm.el" (id &optional force))
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(declare-function exwm--update-protocols "exwm.el" (id &optional force))
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(declare-function exwm--update-struts "exwm.el" (id))
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(declare-function exwm-floating--set-floating "exwm-floating.el" (id))
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(declare-function exwm-floating--unset-floating "exwm-floating.el" (id))
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(declare-function exwm-input-grab-keyboard "exwm-input.el")
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(declare-function exwm-workspace--current-height "exwm-workspace.el")
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(declare-function exwm-workspace--current-width "exwm-workspace.el")
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(declare-function exwm-workspace--set-desktop "exwm-workspace.el" (id))
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(declare-function exwm-workspace--count "exwm-workspace.el" ())
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(declare-function exwm-workspace-move-window "exwm-workspace.el"
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(frame-or-index &optional id))
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(defun exwm-manage--manage-window (id)
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"Manage window ID."
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(exwm--log "Try to manage #x%x" id)
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(catch 'return
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;; Ensure it's alive
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(when (xcb:+request-checked+request-check exwm--connection
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(make-instance 'xcb:ChangeWindowAttributes
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:window id :value-mask xcb:CW:EventMask
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:event-mask exwm--client-event-mask))
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(throw 'return 'dead))
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;; Add this X window to save-set.
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(xcb:+request exwm--connection
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(make-instance 'xcb:ChangeSaveSet
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:mode xcb:SetMode:Insert
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:window id))
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(with-current-buffer (generate-new-buffer "*EXWM*")
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;; Keep the oldest X window first.
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(setq exwm--id-buffer-alist
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(nconc exwm--id-buffer-alist `((,id . ,(current-buffer)))))
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(exwm-mode)
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(setq exwm--id id)
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(exwm--update-window-type id)
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(exwm--update-class id)
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(exwm--update-transient-for id)
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(exwm--update-normal-hints id)
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(exwm--update-hints id)
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(exwm-manage--update-geometry id)
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(exwm-manage--update-mwm-hints id)
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;; No need to manage (please check OverrideRedirect outside)
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(when (or
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(not
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(or (not exwm-window-type)
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(memq xcb:Atom:_NET_WM_WINDOW_TYPE_UTILITY exwm-window-type)
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(memq xcb:Atom:_NET_WM_WINDOW_TYPE_DIALOG exwm-window-type)
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(memq xcb:Atom:_NET_WM_WINDOW_TYPE_NORMAL exwm-window-type)))
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;; Check the _MOTIF_WM_HINTS property.
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(and (not exwm--mwm-hints-decorations)
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(not exwm--hints-input)
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;; Floating windows only
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(or exwm-transient-for exwm--fixed-size
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(memq xcb:Atom:_NET_WM_WINDOW_TYPE_UTILITY
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exwm-window-type)
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(memq xcb:Atom:_NET_WM_WINDOW_TYPE_DIALOG
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exwm-window-type))))
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(exwm--log "No need to manage #x%x" id)
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;; Update struts.
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(when (memq xcb:Atom:_NET_WM_WINDOW_TYPE_DOCK exwm-window-type)
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(exwm--update-struts id))
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;; Remove all events
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(xcb:+request exwm--connection
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(make-instance 'xcb:ChangeWindowAttributes
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:window id :value-mask xcb:CW:EventMask
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:event-mask
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(if (memq xcb:Atom:_NET_WM_WINDOW_TYPE_DOCK
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exwm-window-type)
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;; Listen for PropertyChange (struts) and
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;; UnmapNotify/DestroyNotify event of the dock.
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exwm--client-event-mask
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xcb:EventMask:NoEvent)))
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;; The window needs to be mapped
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(xcb:+request exwm--connection
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(make-instance 'xcb:MapWindow :window id))
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(with-slots (x y width height) exwm--geometry
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;; Reparent to virtual root
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(unless (or (memq xcb:Atom:_NET_WM_WINDOW_TYPE_DESKTOP
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exwm-window-type)
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(memq xcb:Atom:_NET_WM_WINDOW_TYPE_DOCK
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exwm-window-type))
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(let ((workspace (frame-parameter exwm-workspace--current
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'exwm-workspace))
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workarea)
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(when (and (/= x 0)
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(/= y 0))
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(setq workarea (elt exwm-workspace--workareas
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exwm-workspace-current-index)
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x (- x (aref workarea 0))
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y (- y (aref workarea 1))))
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(xcb:+request exwm--connection
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(make-instance 'xcb:ReparentWindow
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:window id
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:parent workspace
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:x x :y y))))
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;; Center window of type _NET_WM_WINDOW_TYPE_SPLASH
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(when (memq xcb:Atom:_NET_WM_WINDOW_TYPE_SPLASH exwm-window-type)
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(xcb:+request exwm--connection
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(make-instance 'xcb:ConfigureWindow
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:window id
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:value-mask (eval-when-compile
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(logior xcb:ConfigWindow:X
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xcb:ConfigWindow:Y))
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:x (/ (- (exwm-workspace--current-width) width)
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2)
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:y (/ (- (exwm-workspace--current-height)
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height)
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2)))))
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;; Check for desktop.
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(when (memq xcb:Atom:_NET_WM_WINDOW_TYPE_DESKTOP exwm-window-type)
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;; There should be only one desktop X window.
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(setq exwm-manage--desktop id)
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;; Put it at bottom.
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(xcb:+request exwm--connection
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(make-instance 'xcb:ConfigureWindow
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:window id
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:value-mask xcb:ConfigWindow:StackMode
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:stack-mode xcb:StackMode:Below)))
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(xcb:flush exwm--connection)
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(setq exwm--id-buffer-alist (assq-delete-all id exwm--id-buffer-alist))
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(let ((kill-buffer-query-functions nil))
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(kill-buffer (current-buffer)))
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(throw 'return 'ignored))
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;; Manage the window
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(exwm--log "Manage #x%x" id)
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;; Create a new container as the parent of this X window
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(setq exwm--container (xcb:generate-id exwm--connection))
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(xcb:+request exwm--connection
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(make-instance 'xcb:CreateWindow
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:depth 0
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:wid exwm--container
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:parent (frame-parameter exwm-workspace--current
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'exwm-workspace)
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:x 0
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:y 0
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:width 1
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:height 1
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:border-width 0
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:class xcb:WindowClass:InputOutput
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:visual 0
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:value-mask (logior xcb:CW:BackPixmap
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(if exwm-floating--border-pixel
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xcb:CW:BorderPixel 0)
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xcb:CW:OverrideRedirect
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xcb:CW:EventMask
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(if exwm-floating--border-colormap
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xcb:CW:Colormap 0))
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:background-pixmap xcb:BackPixmap:ParentRelative
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:border-pixel exwm-floating--border-pixel
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:override-redirect 1
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:event-mask xcb:EventMask:SubstructureRedirect
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:colormap exwm-floating--border-colormap))
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(exwm--debug
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(xcb:+request exwm--connection
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(make-instance 'xcb:ewmh:set-_NET_WM_NAME
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:window exwm--container
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:data (format "EXWM container for 0x%x" id))))
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(xcb:+request exwm--connection
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(make-instance 'xcb:ReparentWindow
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:window id :parent exwm--container :x 0 :y 0))
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(xcb:+request exwm--connection ;remove border
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(make-instance 'xcb:ConfigureWindow
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:window id :value-mask xcb:ConfigWindow:BorderWidth
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:border-width 0))
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(dolist (button ;grab buttons to set focus / move / resize
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(list xcb:ButtonIndex:1 xcb:ButtonIndex:2 xcb:ButtonIndex:3))
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(xcb:+request exwm--connection
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(make-instance 'xcb:GrabButton
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:owner-events 0 :grab-window id
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:event-mask xcb:EventMask:ButtonPress
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:pointer-mode xcb:GrabMode:Sync
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:keyboard-mode xcb:GrabMode:Async
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:confine-to xcb:Window:None :cursor xcb:Cursor:None
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:button button :modifiers xcb:ModMask:Any)))
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(exwm-manage--set-client-list)
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(xcb:flush exwm--connection)
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(exwm--update-title id)
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(exwm--update-protocols id)
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(if (and (not exwm-manage-force-tiling)
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(or exwm-transient-for exwm--fixed-size
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(memq xcb:Atom:_NET_WM_WINDOW_TYPE_UTILITY exwm-window-type)
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(memq xcb:Atom:_NET_WM_WINDOW_TYPE_DIALOG
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exwm-window-type)))
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(exwm-floating--set-floating id)
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(exwm-floating--unset-floating id))
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(exwm-input-grab-keyboard id)
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(setq exwm-workspace--switch-history-outdated t)
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;; Set _NET_WM_DESKTOP or move window.
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(let ((reply (xcb:+request-unchecked+reply exwm--connection
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(make-instance 'xcb:ewmh:get-_NET_WM_DESKTOP
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:window id)))
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desktop)
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(when reply
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(setq desktop (slot-value reply 'value)))
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(if (and desktop
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(/= desktop exwm-workspace-current-index)
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;; Check the range.
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(< desktop (exwm-workspace--count)))
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(exwm-workspace-move-window desktop id)
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(exwm-workspace--set-desktop id)))
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(exwm-manage--update-ewmh-state id)
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(with-current-buffer (exwm--id->buffer id)
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(when (memq xcb:Atom:_NET_WM_STATE_FULLSCREEN exwm--ewmh-state)
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(setq exwm--ewmh-state
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(delq xcb:Atom:_NET_WM_STATE_FULLSCREEN exwm--ewmh-state))
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(exwm-layout-set-fullscreen id))
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(run-hooks 'exwm-manage-finish-hook)))))
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(defvar exwm-workspace--id-struts-alist)
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(defvar exwm-workspace--list)
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(declare-function exwm-workspace--update-struts "exwm-workspace.el" ())
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(declare-function exwm-workspace--update-workareas "exwm-workspace.el" ())
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(declare-function exwm-workspace--set-fullscreen "exwm-workspace.el" (frame))
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(defun exwm-manage--unmanage-window (id &optional withdraw-only)
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"Unmanage window ID.
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If WITHDRAW-ONLY is non-nil, the X window will be properly placed back to the
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root window. Set WITHDRAW-ONLY to 'quit if this functions is used when window
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manager is shutting down."
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(let ((buffer (exwm--id->buffer id)))
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(exwm--log "Unmanage #x%x (buffer: %s, widthdraw: %s)"
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id buffer withdraw-only)
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(setq exwm--id-buffer-alist (assq-delete-all id exwm--id-buffer-alist))
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;; Update workspaces when a dock is destroyed.
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(when (and (null withdraw-only)
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(assq id exwm-workspace--id-struts-alist))
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(setq exwm-workspace--id-struts-alist
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(assq-delete-all id exwm-workspace--id-struts-alist))
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(exwm-workspace--update-struts)
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(exwm-workspace--update-workareas)
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(dolist (f exwm-workspace--list)
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(exwm-workspace--set-fullscreen f)))
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(when (buffer-live-p buffer)
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(with-current-buffer buffer
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;; Flickering seems unavoidable here if the DestroyWindow request is
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;; not initiated by us.
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;; What we can do is to hide the its container ASAP.
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(xcb:+request exwm--connection
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(make-instance 'xcb:UnmapWindow :window exwm--container))
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(xcb:flush exwm--connection)
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;; Unmap the X window.
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(xcb:+request exwm--connection
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(make-instance 'xcb:UnmapWindow :window id))
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;;
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(setq exwm-workspace--switch-history-outdated t)
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;;
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(when withdraw-only
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;; Reparent back to root
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(xcb:+request exwm--connection
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(make-instance 'xcb:ChangeWindowAttributes
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:window id :value-mask xcb:CW:EventMask
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:event-mask xcb:EventMask:NoEvent))
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(let (x y geometry geometry-parent)
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(if (not exwm--floating-frame)
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(setq x 0 y 0) ;the position does not matter
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(setq geometry-parent
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(xcb:+request-unchecked+reply exwm--connection
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(make-instance 'xcb:GetGeometry
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:drawable exwm--container))
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geometry (xcb:+request-unchecked+reply exwm--connection
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(make-instance 'xcb:GetGeometry
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:drawable id)))
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(if (not (and geometry-parent geometry))
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(setq x 0 y 0) ;e.g. have been destroyed
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(setq x (+ (slot-value geometry-parent 'x)
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(slot-value geometry 'x))
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y (+ (slot-value geometry-parent 'y)
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(slot-value geometry 'y)))))
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(xcb:+request exwm--connection
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(make-instance 'xcb:ReparentWindow
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:window id :parent exwm--root :x x :y y)))
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;; Delete WM_STATE property
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(xcb:+request exwm--connection
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(make-instance 'xcb:DeleteProperty
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:window id :property xcb:Atom:WM_STATE))
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(unless (eq withdraw-only 'quit)
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;; Remove _NET_WM_DESKTOP.
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(xcb:+request exwm--connection
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(make-instance 'xcb:DeleteProperty
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:window id
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:property xcb:Atom:_NET_WM_DESKTOP))))
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(when exwm--floating-frame
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;; Unmap the floating frame before destroying the containers.
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(let ((window (frame-parameter exwm--floating-frame 'exwm-outer-id)))
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(xcb:+request exwm--connection
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(make-instance 'xcb:UnmapWindow :window window))
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(xcb:+request exwm--connection
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(make-instance 'xcb:ReparentWindow
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:window window :parent exwm--root :x 0 :y 0))))
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;; Restore the workspace if this X window is currently fullscreen.
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(when (memq xcb:Atom:_NET_WM_STATE_FULLSCREEN exwm--ewmh-state)
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(exwm-workspace--set-fullscreen exwm--frame))
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;; Destroy the X window container (and the frame container if any).
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(xcb:+request exwm--connection
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(make-instance 'xcb:DestroyWindow :window exwm--container))
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(exwm-manage--set-client-list)
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(xcb:flush exwm--connection))
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(let ((kill-buffer-func
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||
(lambda (buffer)
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(when (buffer-local-value 'exwm--floating-frame buffer)
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||
(select-window
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(frame-selected-window exwm-workspace--current)))
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(with-current-buffer buffer
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(let ((kill-buffer-query-functions nil))
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(kill-buffer buffer))))))
|
||
(exwm--defer 0 kill-buffer-func buffer)
|
||
(when (active-minibuffer-window)
|
||
(exit-minibuffer))))))
|
||
|
||
(defun exwm-manage--scan ()
|
||
"Search for existing windows and try to manage them."
|
||
(let* ((tree (xcb:+request-unchecked+reply exwm--connection
|
||
(make-instance 'xcb:QueryTree
|
||
:window exwm--root)))
|
||
reply)
|
||
(dolist (i (slot-value tree 'children))
|
||
(setq reply (xcb:+request-unchecked+reply exwm--connection
|
||
(make-instance 'xcb:GetWindowAttributes
|
||
:window i)))
|
||
;; It's possible the X window has been destroyed.
|
||
(when reply
|
||
(with-slots (override-redirect map-state) reply
|
||
(when (and (= 0 override-redirect)
|
||
(= xcb:MapState:Viewable map-state))
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:UnmapWindow
|
||
:window i))
|
||
(xcb:flush exwm--connection)
|
||
(exwm-manage--manage-window i)))))))
|
||
|
||
(defvar exwm-manage--ping-lock nil
|
||
"Non-nil indicates EXWM is pinging a window.")
|
||
(defvar exwm-manage-ping-timeout 3 "Seconds to wait before killing a client.")
|
||
|
||
(defun exwm-manage--kill-buffer-query-function ()
|
||
"Run in `kill-buffer-query-functions'."
|
||
(catch 'return
|
||
(when (or (not exwm--id)
|
||
(not exwm--container)
|
||
(xcb:+request-checked+request-check exwm--connection
|
||
(make-instance 'xcb:MapWindow
|
||
:window exwm--id)))
|
||
;; The X window is no longer alive so just close the buffer.
|
||
;; Destroy the container.
|
||
;; Hide the container to prevent flickering.
|
||
(when exwm--container
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:UnmapWindow
|
||
:window exwm--container))
|
||
(xcb:flush exwm--connection))
|
||
(when exwm--floating-frame
|
||
(let ((window (frame-parameter exwm--floating-frame 'exwm-outer-id)))
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:UnmapWindow :window window))
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:ReparentWindow
|
||
:window window
|
||
:parent exwm--root
|
||
:x 0 :y 0))))
|
||
(when exwm--container
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:DestroyWindow
|
||
:window exwm--container)))
|
||
(xcb:flush exwm--connection)
|
||
(throw 'return t))
|
||
(unless (memq xcb:Atom:WM_DELETE_WINDOW exwm--protocols)
|
||
;; The X window does not support WM_DELETE_WINDOW; destroy it.
|
||
;; Hide the container to prevent flickering.
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:UnmapWindow :window exwm--container))
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:DestroyWindow :window exwm--id))
|
||
(xcb:flush exwm--connection)
|
||
;; Wait for DestroyNotify event.
|
||
(throw 'return nil))
|
||
(let ((id exwm--id))
|
||
;; Try to close the X window with WM_DELETE_WINDOW client message.
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:icccm:SendEvent
|
||
:destination id
|
||
:event (xcb:marshal
|
||
(make-instance 'xcb:icccm:WM_DELETE_WINDOW
|
||
:window id)
|
||
exwm--connection)))
|
||
(xcb:flush exwm--connection)
|
||
;;
|
||
(unless (memq xcb:Atom:_NET_WM_PING exwm--protocols)
|
||
;; For X windows without _NET_WM_PING support, we'd better just
|
||
;; wait for DestroyNotify events.
|
||
(throw 'return nil))
|
||
;; Try to determine if the X window is dead with _NET_WM_PING.
|
||
(setq exwm-manage--ping-lock t)
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:SendEvent
|
||
:propagate 0
|
||
:destination id
|
||
:event-mask xcb:EventMask:NoEvent
|
||
:event (xcb:marshal
|
||
(make-instance 'xcb:ewmh:_NET_WM_PING
|
||
:window id
|
||
:timestamp 0
|
||
:client-window id)
|
||
exwm--connection)))
|
||
(xcb:flush exwm--connection)
|
||
(with-timeout (exwm-manage-ping-timeout
|
||
(if (y-or-n-p (format "'%s' is not responding. \
|
||
Would you like to kill it? "
|
||
(buffer-name)))
|
||
(progn (exwm-manage--kill-client id)
|
||
;; Kill the unresponsive X window and
|
||
;; wait for DestroyNotify event.
|
||
(throw 'return nil))
|
||
;; Give up.
|
||
(throw 'return nil)))
|
||
(while (and exwm-manage--ping-lock
|
||
(exwm--id->buffer id)) ;may have been destroyed.
|
||
(accept-process-output nil 0.1))
|
||
;; Give up.
|
||
(throw 'return nil)))))
|
||
|
||
(defun exwm-manage--kill-client (&optional id)
|
||
"Kill an X client."
|
||
(unless id (setq id (exwm--buffer->id (current-buffer))))
|
||
;; Hide the container to prevent flickering.
|
||
(let ((buffer (exwm--id->buffer id)))
|
||
(when buffer
|
||
(with-current-buffer buffer
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:UnmapWindow :window exwm--container))
|
||
(xcb:flush exwm--connection))))
|
||
(let* ((response (xcb:+request-unchecked+reply exwm--connection
|
||
(make-instance 'xcb:ewmh:get-_NET_WM_PID :window id)))
|
||
(pid (and response (slot-value response 'value)))
|
||
(request (make-instance 'xcb:KillClient :resource id)))
|
||
(if (not pid)
|
||
(xcb:+request exwm--connection request)
|
||
;; What if the PID is fake/wrong?
|
||
(signal-process pid 'SIGKILL)
|
||
;; Ensure it's dead
|
||
(run-with-timer exwm-manage-ping-timeout nil
|
||
`(lambda ()
|
||
(xcb:+request exwm--connection ,request))))
|
||
(xcb:flush exwm--connection)))
|
||
|
||
;; FIXME: Make the following values as small as possible.
|
||
(defconst exwm-manage--width-delta-min 5)
|
||
(defconst exwm-manage--height-delta-min 5)
|
||
|
||
(defvar exwm-manage--frame-outer-id-list nil
|
||
"List of window-outer-id's of all frames.")
|
||
|
||
(defun exwm-manage--add-frame (frame)
|
||
"Run in `after-make-frame-functions'."
|
||
(when (display-graphic-p frame)
|
||
(push (string-to-number (frame-parameter frame 'outer-window-id))
|
||
exwm-manage--frame-outer-id-list)))
|
||
|
||
(defun exwm-manage--remove-frame (frame)
|
||
"Run in `delete-frame-functions'."
|
||
(when (display-graphic-p frame)
|
||
(setq exwm-manage--frame-outer-id-list
|
||
(delq (string-to-number (frame-parameter frame 'outer-window-id))
|
||
exwm-manage--frame-outer-id-list))))
|
||
|
||
(defun exwm-manage--on-ConfigureRequest (data _synthetic)
|
||
"Handle ConfigureRequest event."
|
||
(let ((obj (make-instance 'xcb:ConfigureRequest))
|
||
buffer edges width-delta height-delta)
|
||
(xcb:unmarshal obj data)
|
||
(with-slots (window x y width height
|
||
border-width sibling stack-mode value-mask)
|
||
obj
|
||
(exwm--log "ConfigureRequest from #x%x (#x%x) @%dx%d%+d%+d; \
|
||
border-width: %d; sibling: #x%x; stack-mode: %d"
|
||
window value-mask width height x y
|
||
border-width sibling stack-mode)
|
||
(if (and (setq buffer (exwm--id->buffer window))
|
||
(with-current-buffer buffer
|
||
(or (memq xcb:Atom:_NET_WM_STATE_FULLSCREEN exwm--ewmh-state)
|
||
;; Make sure it's a floating X window wanting to resize
|
||
;; itself.
|
||
(or (not exwm--floating-frame)
|
||
(progn
|
||
(setq edges
|
||
(window-inside-pixel-edges
|
||
(get-buffer-window buffer t))
|
||
width-delta (- width (- (elt edges 2)
|
||
(elt edges 0)))
|
||
height-delta (- height (- (elt edges 3)
|
||
(elt edges 1))))
|
||
;; We cannot do resizing precisely for now.
|
||
(and (if (= 0 (logand value-mask
|
||
xcb:ConfigWindow:Width))
|
||
t
|
||
(< (abs width-delta)
|
||
exwm-manage--width-delta-min))
|
||
(if (= 0 (logand value-mask
|
||
xcb:ConfigWindow:Height))
|
||
t
|
||
(< (abs height-delta)
|
||
exwm-manage--height-delta-min))))))))
|
||
;; Send client message for managed windows
|
||
(with-current-buffer buffer
|
||
(setq edges
|
||
(if (memq xcb:Atom:_NET_WM_STATE_FULLSCREEN exwm--ewmh-state)
|
||
(list 0 0
|
||
(exwm-workspace--current-width)
|
||
(exwm-workspace--current-height))
|
||
(window-inside-absolute-pixel-edges
|
||
(get-buffer-window buffer t))))
|
||
(exwm--log "Reply with ConfigureNotify (edges): %s" edges)
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:SendEvent
|
||
:propagate 0 :destination window
|
||
:event-mask xcb:EventMask:StructureNotify
|
||
:event (xcb:marshal
|
||
(make-instance
|
||
'xcb:ConfigureNotify
|
||
:event window :window window
|
||
:above-sibling xcb:Window:None
|
||
:x (elt edges 0) :y (elt edges 1)
|
||
:width (- (elt edges 2) (elt edges 0))
|
||
:height (- (elt edges 3) (elt edges 1))
|
||
:border-width 0 :override-redirect 0)
|
||
exwm--connection))))
|
||
(if buffer
|
||
(with-current-buffer buffer
|
||
(exwm--log "ConfigureWindow (resize floating X window)")
|
||
(when (and (/= 0 (logand value-mask xcb:ConfigWindow:Width))
|
||
(>= (abs width-delta) exwm-manage--width-delta-min))
|
||
(set-frame-width exwm--floating-frame
|
||
(+ (frame-pixel-width exwm--floating-frame)
|
||
width-delta)
|
||
nil t))
|
||
(when (and (/= 0 (logand value-mask xcb:ConfigWindow:Height))
|
||
(>= (abs height-delta) exwm-manage--height-delta-min))
|
||
(set-frame-height exwm--floating-frame
|
||
(+ (frame-pixel-height exwm--floating-frame)
|
||
height-delta)
|
||
nil t)))
|
||
(exwm--log "ConfigureWindow (preserve geometry)")
|
||
;; Configure the unmanaged window.
|
||
;; But Emacs frames should be excluded. Generally we don't
|
||
;; receive ConfigureRequest events from Emacs frames since we
|
||
;; have set OverrideRedirect on them, but this is not true for
|
||
;; Lucid build (as of 25.1).
|
||
(unless (memq window exwm-manage--frame-outer-id-list)
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:ConfigureWindow
|
||
:window window
|
||
:value-mask value-mask
|
||
:x x :y y :width width :height height
|
||
:border-width border-width
|
||
:sibling sibling
|
||
:stack-mode stack-mode)))))))
|
||
(xcb:flush exwm--connection))
|
||
|
||
(declare-function exwm-layout--iconic-state-p "exwm-layout.el" (&optional id))
|
||
|
||
(defun exwm-manage--on-MapRequest (data _synthetic)
|
||
"Handle MapRequest event."
|
||
(let ((obj (make-instance 'xcb:MapRequest)))
|
||
(xcb:unmarshal obj data)
|
||
(with-slots (parent window) obj
|
||
(if (assoc window exwm--id-buffer-alist)
|
||
(with-current-buffer (exwm--id->buffer window)
|
||
(if (exwm-layout--iconic-state-p)
|
||
;; State change: iconic => normal.
|
||
(when (eq exwm--frame exwm-workspace--current)
|
||
(pop-to-buffer-same-window (current-buffer)))
|
||
(exwm--log "#x%x is already managed" window)))
|
||
(if (/= exwm--root parent)
|
||
(progn (xcb:+request exwm--connection
|
||
(make-instance 'xcb:MapWindow :window window))
|
||
(xcb:flush exwm--connection))
|
||
(exwm--log "MapRequest from #x%x" window)
|
||
(exwm-manage--manage-window window))))))
|
||
|
||
(defun exwm-manage--on-UnmapNotify (data _synthetic)
|
||
"Handle UnmapNotify event."
|
||
(let ((obj (make-instance 'xcb:UnmapNotify)))
|
||
(xcb:unmarshal obj data)
|
||
(with-slots (window) obj
|
||
(exwm--log "UnmapNotify from #x%x" window)
|
||
(exwm-manage--unmanage-window window t))))
|
||
|
||
(defun exwm-manage--on-DestroyNotify (data synthetic)
|
||
"Handle DestroyNotify event."
|
||
(unless synthetic
|
||
(let ((obj (make-instance 'xcb:DestroyNotify)))
|
||
(xcb:unmarshal obj data)
|
||
(exwm--log "DestroyNotify from #x%x" (slot-value obj 'window))
|
||
(exwm-manage--unmanage-window (slot-value obj 'window)))))
|
||
|
||
(defun exwm-manage--init ()
|
||
"Initialize manage module."
|
||
;; Intern _MOTIF_WM_HINTS
|
||
(let ((atom-name "_MOTIF_WM_HINTS"))
|
||
(setq exwm-manage--_MOTIF_WM_HINTS
|
||
(slot-value (xcb:+request-unchecked+reply exwm--connection
|
||
(make-instance 'xcb:InternAtom
|
||
:only-if-exists 0
|
||
:name-len (length atom-name)
|
||
:name atom-name))
|
||
'atom)))
|
||
(add-hook 'after-make-frame-functions #'exwm-manage--add-frame)
|
||
(add-hook 'delete-frame-functions #'exwm-manage--remove-frame)
|
||
(xcb:+event exwm--connection 'xcb:ConfigureRequest
|
||
#'exwm-manage--on-ConfigureRequest)
|
||
(xcb:+event exwm--connection 'xcb:MapRequest #'exwm-manage--on-MapRequest)
|
||
(xcb:+event exwm--connection 'xcb:UnmapNotify #'exwm-manage--on-UnmapNotify)
|
||
(xcb:+event exwm--connection 'xcb:DestroyNotify
|
||
#'exwm-manage--on-DestroyNotify))
|
||
|
||
(defun exwm-manage--exit ()
|
||
"Exit the manage module."
|
||
(setq exwm-manage--_MOTIF_WM_HINTS nil))
|
||
|
||
|
||
|
||
(provide 'exwm-manage)
|
||
|
||
;;; exwm-manage.el ends here
|