exwm2/exwm-manage.el
Chris Feng 3f7722079c Fix floating X window bugs introduced by 9c95c03e
* exwm-floating.el (exwm-floating--set-floating): Make floating frames
invisible before resizing them.
(exwm-floating--fit-frame-to-window): Removed since unused.
* exwm-layout.el (exwm-layout-hide-mode-line, exwm-layout-show-mode-line):
Use set frame height instead of exwm-floating--fit-frame-to-window.

* exwm-core.el (exwm-mode): Replace `exwm-manage--close-window' with
`exwm-manage--kill-buffer-query-function'.
* exwm-floating.el (exwm-floating--unset-floating): Reparent out floating
frames.
* exwm-manage.el (exwm-manage--unmanage-window): Reparent out floating
frames.  Hide floating frames.
(exwm-manage--close-window, exwm-manage--kill-buffer-query-function):
Rename `exwm-manage--close-window' since it's only used in
`kill-buffer-query-functions'.  Reparent out floating frames.
2016-02-18 19:56:01 +08:00

477 lines
22 KiB
EmacsLisp
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

;;; exwm-manage.el --- Window Management Module for -*- lexical-binding: t -*-
;;; EXWM
;; 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 is the fundamental module of EXWM that deals with window management.
;;; Code:
(require 'exwm-core)
(eval-when-compile (require 'exwm-workspace))
(defvar exwm-manage-finish-hook nil
"Normal hook run after a window is just managed, in the context of the
corresponding buffer.")
(defun exwm-manage--update-geometry (id &optional force)
"Update window geometry."
(with-current-buffer (exwm--id->buffer id)
(unless (and exwm--geometry (not force))
(let ((reply (xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:GetGeometry :drawable id))))
(when reply ;nil when destroyed
(setq exwm--geometry reply))))))
;; The _MOTIF_WM_HINTS atom (see <Xm/MwmUtil.h> for more details)
;; It's currently only used in 'exwm-manage' module
(defvar exwm-manage--_MOTIF_WM_HINTS nil "_MOTIF_WM_HINTS atom.")
(defun exwm-manage--update-mwm-hints (id &optional force)
"Update _MOTIF_WM_HINTS."
(with-current-buffer (exwm--id->buffer id)
(unless (and exwm--mwm-hints (not force))
(let ((reply (xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:icccm:-GetProperty
:window id
:property exwm-manage--_MOTIF_WM_HINTS
:type exwm-manage--_MOTIF_WM_HINTS
:long-length 5))))
(when reply
(setq exwm--mwm-hints (append (slot-value reply 'value) nil)))))))
(defun exwm-manage--manage-window (id)
"Manage window ID."
(exwm--log "Try to manage #x%x" id)
(catch 'return
;; Ensure it's alive
(when (xcb:+request-checked+request-check exwm--connection
(make-instance 'xcb:ChangeWindowAttributes
:window id :value-mask xcb:CW:EventMask
:event-mask exwm--client-event-mask))
(throw 'return 'dead))
(with-current-buffer (generate-new-buffer "*EXWM*")
(push `(,id . ,(current-buffer)) exwm--id-buffer-alist)
(exwm-mode)
(setq exwm--id id)
(exwm--update-window-type id)
(exwm--update-class id)
(exwm--update-transient-for id)
(exwm--update-normal-hints id)
(exwm-manage--update-geometry id)
(exwm-manage--update-mwm-hints id)
;; No need to manage (please check OverrideRedirect outside)
(when (or
(not
(or (not exwm-window-type)
(memq xcb:Atom:_NET_WM_WINDOW_TYPE_UTILITY exwm-window-type)
(memq xcb:Atom:_NET_WM_WINDOW_TYPE_DIALOG exwm-window-type)
(memq xcb:Atom:_NET_WM_WINDOW_TYPE_NORMAL exwm-window-type)))
;; Check _MOTIF_WM_HINTS for Java applications
;; See <Xm/MwmUtil.h> for the definitions of these fields
(and exwm--mwm-hints
exwm-instance-name
(/= 0 (logand (elt exwm--mwm-hints 0) ;MotifWmHints.flags
2)) ;MWM_HINTS_DECORATIONS
(= 0 (elt exwm--mwm-hints 2)) ;MotifWmHints.decorations
;; Java applications only
(string-prefix-p "sun-awt-X11-" exwm-instance-name)
;; Floating windows only
(or exwm-transient-for exwm--fixed-size
(memq xcb:Atom:_NET_WM_WINDOW_TYPE_UTILITY
exwm-window-type)
(memq xcb:Atom:_NET_WM_WINDOW_TYPE_DIALOG
exwm-window-type))))
(exwm--log "No need to manage #x%x" id)
;; Remove all events
(xcb:+request exwm--connection
(make-instance 'xcb:ChangeWindowAttributes
:window id :value-mask xcb:CW:EventMask
:event-mask xcb:EventMask:NoEvent))
;; The window needs to be mapped
(xcb:+request exwm--connection
(make-instance 'xcb:MapWindow :window id))
(with-slots (x y width height) exwm--geometry
;; Reparent to virtual root
(unless (or (memq xcb:Atom:_NET_WM_WINDOW_TYPE_DESKTOP
exwm-window-type)
(memq xcb:Atom:_NET_WM_WINDOW_TYPE_DOCK
exwm-window-type))
(xcb:+request exwm--connection
(make-instance 'xcb:ReparentWindow
:window id
:parent (frame-parameter exwm-workspace--current
'exwm-workspace)
:x x :y y)))
;; Center window of type _NET_WM_WINDOW_TYPE_SPLASH
(when (memq xcb:Atom:_NET_WM_WINDOW_TYPE_SPLASH exwm-window-type)
(xcb:+request exwm--connection
(make-instance 'xcb:ConfigureWindow
:window id
:value-mask (eval-when-compile
(logior xcb:ConfigWindow:X
xcb:ConfigWindow:Y))
:x (/ (- (frame-pixel-width
exwm-workspace--current)
width)
2)
:y (/ (- (frame-pixel-height
exwm-workspace--current)
height)
2)))))
(xcb:flush exwm--connection)
(setq exwm--id-buffer-alist (assq-delete-all id exwm--id-buffer-alist))
(let ((kill-buffer-query-functions nil))
(kill-buffer (current-buffer)))
(throw 'return 'ignored))
;; Manage the window
(exwm--log "Manage #x%x" id)
;; Create a new container as the parent of this X window
(setq exwm--container (xcb:generate-id exwm--connection))
(xcb:+request exwm--connection
(make-instance 'xcb:CreateWindow
:depth 0 :wid exwm--container
:parent (frame-parameter exwm-workspace--current
'exwm-workspace)
:x 0 :y 0 :width 1 :height 1 :border-width 0
:class xcb:WindowClass:CopyFromParent
:visual 0 ;CopyFromParent
:value-mask (logior xcb:CW:OverrideRedirect
xcb:CW:EventMask)
:override-redirect 1
:event-mask xcb:EventMask:SubstructureRedirect))
(exwm--debug
(xcb:+request exwm--connection
(make-instance 'xcb:ewmh:set-_NET_WM_NAME
:window exwm--container
:data (format "EXWM container for 0x%x" id))))
(xcb:+request exwm--connection
(make-instance 'xcb:ReparentWindow
:window id :parent exwm--container :x 0 :y 0))
(xcb:+request exwm--connection ;remove border
(make-instance 'xcb:ConfigureWindow
:window id :value-mask xcb:ConfigWindow:BorderWidth
:border-width 0))
(dolist (button ;grab buttons to set focus / move / resize
(list xcb:ButtonIndex:1 xcb:ButtonIndex:2 xcb:ButtonIndex:3))
(xcb:+request exwm--connection
(make-instance 'xcb:GrabButton
:owner-events 0 :grab-window id
:event-mask xcb:EventMask:ButtonPress
:pointer-mode xcb:GrabMode:Sync
:keyboard-mode xcb:GrabMode:Async
:confine-to xcb:Window:None :cursor xcb:Cursor:None
:button button :modifiers xcb:ModMask:Any)))
(xcb:+request exwm--connection ;update _NET_CLIENT_LIST
(make-instance 'xcb:ewmh:set-_NET_CLIENT_LIST
:window exwm--root
:data (vconcat (mapcar #'car exwm--id-buffer-alist))))
(xcb:flush exwm--connection)
(exwm--update-title id)
(exwm--update-hints id)
(exwm--update-protocols id)
(exwm--update-state id)
(if (or exwm-transient-for exwm--fixed-size
(memq xcb:Atom:_NET_WM_WINDOW_TYPE_UTILITY exwm-window-type)
(memq xcb:Atom:_NET_WM_WINDOW_TYPE_DIALOG exwm-window-type))
(exwm-floating--set-floating id)
(exwm-floating--unset-floating id))
(exwm-input-grab-keyboard id)
(setq exwm-workspace--switch-history-outdated t)
(with-current-buffer (exwm--id->buffer id)
(run-hooks 'exwm-manage-finish-hook)))))
;;;###autoload
(defun exwm-manage--unmanage-window (id &optional withdraw-only)
"Unmanage window ID."
(let ((buffer (exwm--id->buffer id)))
(exwm--log "Unmanage #x%x (buffer: %s)" id buffer)
(setq exwm--id-buffer-alist (assq-delete-all id exwm--id-buffer-alist))
(when (buffer-live-p buffer)
(with-current-buffer buffer
;; Hide the floating frame as early as possible.
(when exwm--floating-frame (make-frame-invisible exwm--floating-frame))
(xcb:+request exwm--connection
(make-instance 'xcb:UnmapWindow :window exwm--container))
(setq exwm-workspace--switch-history-outdated t)
;;
(when withdraw-only
;; Reparent back to root
(xcb:+request exwm--connection
(make-instance 'xcb:ChangeWindowAttributes
:window id :value-mask xcb:CW:EventMask
:event-mask xcb:EventMask:NoEvent))
(let (x y geometry geometry-parent)
(if (not exwm--floating-frame)
(setq x 0 y 0) ;the position does not matter
(setq geometry-parent
(xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:GetGeometry
:drawable exwm--container))
geometry (xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:GetGeometry
:drawable id)))
(if (not (and geometry-parent geometry))
(setq x 0 y 0) ;e.g. have been destroyed
(setq x (+ (slot-value geometry-parent 'x)
(slot-value geometry 'x))
y (+ (slot-value geometry-parent 'y)
(slot-value geometry 'y)))))
(xcb:+request exwm--connection
(make-instance 'xcb:ReparentWindow
:window id :parent exwm--root :x x :y y)))
;; Delete WM_STATE property
(xcb:+request exwm--connection
(make-instance 'xcb:DeleteProperty
:window id :property xcb:Atom:WM_STATE)))
;; Destroy the container (it seems it has to be delayed).
(when exwm--floating-frame
(xcb:+request exwm--connection
(make-instance 'xcb:ReparentWindow
:window (frame-parameter exwm--floating-frame
'exwm-outer-id)
:parent exwm--root
:x 0 :y 0)))
(xcb:+request exwm--connection
(make-instance 'xcb:DestroyWindow :window exwm--container))
(xcb:flush exwm--connection)
(let ((kill-buffer-query-functions nil)
(floating exwm--floating-frame))
(kill-buffer)
(when floating
(select-window
(frame-selected-window exwm-workspace--current))))))
(xcb:+request exwm--connection ;update _NET_CLIENT_LIST
(make-instance 'xcb:ewmh:set-_NET_CLIENT_LIST
:window exwm--root
:data (vconcat (mapcar #'car exwm--id-buffer-alist))))
(xcb:flush exwm--connection)))
(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))))
(dolist (i (slot-value tree 'children))
(with-slots (override-redirect map-state)
(xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:GetWindowAttributes :window i))
(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.")
;;;###autoload
(defun exwm-manage--kill-buffer-query-function ()
"Run in `kill-buffer-query-functions'."
(catch 'return
(when (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.
(when exwm--floating-frame
(xcb:+request exwm--connection
(make-instance 'xcb:ReparentWindow
:window (frame-parameter exwm--floating-frame
'exwm-outer-id)
:parent exwm--root
:x 0 :y 0)))
(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.
(xcb:+request exwm--connection
(make-instance 'xcb:DestroyWindow :window exwm--id))
(xcb:flush exwm--connection)
;; Wait for DestroyNotify event.
(throw 'return nil))
;; Try to close the X window with WM_DELETE_WINDOW client message.
(xcb:+request exwm--connection
(make-instance 'xcb:icccm:SendEvent
:destination exwm--id
:event (xcb:marshal
(make-instance 'xcb:icccm:WM_DELETE_WINDOW
:window exwm--id)
exwm--connection)))
(xcb:flush exwm--connection)
;;
(unless (memq xcb:Atom:_NET_WM_PING exwm--protocols)
;; The window does not support _NET_WM_PING. To make sure it'll die,
;; kill it after the time runs out.
(run-with-timer exwm-manage-ping-timeout nil
`(lambda () (exwm-manage--kill-client ,exwm--id)))
;; Wait for DestroyNotify event.
(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 exwm--id
:event-mask xcb:EventMask:NoEvent
:event (xcb:marshal
(make-instance 'xcb:ewmh:_NET_WM_PING
:window exwm--id
:timestamp 0
:client-window exwm--id)
exwm--connection)))
(xcb:flush exwm--connection)
(with-timeout (exwm-manage-ping-timeout
(if (yes-or-no-p (format "'%s' is not responding. \
Would you like to kill it? "
(buffer-name)))
(progn (exwm-manage--kill-client exwm--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 exwm--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."
(interactive)
(unless id (setq id (exwm--buffer->id (current-buffer))))
(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)))
(defun exwm-manage--on-ConfigureRequest (data _synthetic)
"Handle ConfigureRequest event."
(let ((obj (make-instance 'xcb:ConfigureRequest))
buffer edges)
(xcb:unmarshal obj data)
(with-slots (window x y width height border-width value-mask)
obj
(exwm--log "ConfigureRequest from #x%x (#x%x) @%dx%d%+d%+d, border: %d"
window value-mask width height x y border-width)
(if (setq buffer (exwm--id->buffer window))
;; Send client message for managed windows
(with-current-buffer buffer
(setq edges
(if exwm--fullscreen
(list 0 0
(frame-pixel-width exwm-workspace--current)
(frame-pixel-height exwm-workspace--current))
(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))))
(exwm--log "ConfigureWindow (preserve geometry)")
;; Configure the unmanaged window without changing the stacking order.
(xcb:+request exwm--connection
(make-instance 'xcb:ConfigureWindow
:window window
:value-mask
(logand value-mask
(lognot xcb:ConfigWindow:Sibling)
(lognot xcb:ConfigWindow:StackMode))
:x x :y y :width width :height height
:border-width border-width)))))
(xcb:flush exwm--connection))
(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)
(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)))
(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))
(provide 'exwm-manage)
;;; exwm-manage.el ends here