443 lines
20 KiB
EmacsLisp
443 lines
20 KiB
EmacsLisp
;;; exwm-layout.el --- Layout Module for EXWM -*- 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 is responsible for keeping X client window properly displayed.
|
||
|
||
;;; Code:
|
||
|
||
(require 'exwm-core)
|
||
(eval-when-compile (require 'exwm-workspace))
|
||
|
||
(defvar exwm-floating-border-width)
|
||
|
||
(defun exwm-layout--resize-container (id container x y width height
|
||
&optional container-only)
|
||
"Resize a container (and its content unless CONTAINER-ONLY is non-nil)."
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:ConfigureWindow
|
||
:window container
|
||
:value-mask (eval-when-compile
|
||
(logior xcb:ConfigWindow:X
|
||
xcb:ConfigWindow:Y
|
||
xcb:ConfigWindow:Width
|
||
xcb:ConfigWindow:Height))
|
||
:x x :y y :width width :height height))
|
||
(unless container-only
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:ConfigureWindow
|
||
:window id
|
||
:value-mask (eval-when-compile
|
||
(logior xcb:ConfigWindow:Width
|
||
xcb:ConfigWindow:Height))
|
||
:width width :height height))))
|
||
|
||
;;;###autoload
|
||
(defun exwm-layout--show (id &optional window)
|
||
"Show window ID exactly fit in the Emacs window WINDOW."
|
||
(exwm--log "Show #x%x in %s" id window)
|
||
(xcb:+request exwm--connection (make-instance 'xcb:MapWindow :window id))
|
||
(with-current-buffer (exwm--id->buffer id)
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:MapWindow :window exwm--container)))
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:icccm:set-WM_STATE
|
||
:window id :state xcb:icccm:WM_STATE:NormalState
|
||
:icon xcb:Window:None))
|
||
(let* ((edges (window-inside-absolute-pixel-edges window))
|
||
(width (- (elt edges 2) (elt edges 0)))
|
||
(height (- (elt edges 3) (elt edges 1))))
|
||
(with-current-buffer (exwm--id->buffer id)
|
||
(if exwm--floating-frame
|
||
;; A floating X window is of the same size as the Emacs window,
|
||
;; whereas its container is of the same size as the Emacs frame.
|
||
(progn
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:ConfigureWindow
|
||
:window exwm--container
|
||
:value-mask (logior xcb:ConfigWindow:Width
|
||
xcb:ConfigWindow:Height)
|
||
:width (frame-pixel-width exwm--floating-frame)
|
||
:height (frame-pixel-height
|
||
exwm--floating-frame)))
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:ConfigureWindow
|
||
:window exwm--id
|
||
:value-mask (logior xcb:ConfigWindow:X
|
||
xcb:ConfigWindow:Y
|
||
xcb:ConfigWindow:Width
|
||
xcb:ConfigWindow:Height)
|
||
:x exwm-floating-border-width
|
||
:y exwm-floating-border-width
|
||
:width width
|
||
:height height)))
|
||
(let ((relative-edges (window-inside-pixel-edges window)))
|
||
(exwm-layout--resize-container id exwm--container
|
||
(elt relative-edges 0)
|
||
(elt relative-edges 1)
|
||
width height
|
||
(active-minibuffer-window)))))
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:SendEvent
|
||
:propagate 0 :destination id
|
||
:event-mask xcb:EventMask:StructureNotify
|
||
:event (xcb:marshal
|
||
(make-instance 'xcb:ConfigureNotify
|
||
:event id :window id
|
||
:above-sibling xcb:Window:None
|
||
:x (elt edges 0)
|
||
:y (elt edges 1)
|
||
:width width :height height
|
||
:border-width 0
|
||
:override-redirect 0)
|
||
exwm--connection))))
|
||
(xcb:flush exwm--connection))
|
||
|
||
;;;###autoload
|
||
(defun exwm-layout--hide (id)
|
||
"Hide window ID."
|
||
(unless (eq xcb:icccm:WM_STATE:IconicState ;already hidden
|
||
(with-current-buffer (exwm--id->buffer id) exwm-state))
|
||
(exwm--log "Hide #x%x" id)
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:ChangeWindowAttributes
|
||
:window id :value-mask xcb:CW:EventMask
|
||
:event-mask xcb:EventMask:NoEvent))
|
||
(xcb:+request exwm--connection (make-instance 'xcb:UnmapWindow :window id))
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:ChangeWindowAttributes
|
||
:window id :value-mask xcb:CW:EventMask
|
||
:event-mask exwm--client-event-mask))
|
||
(with-current-buffer (exwm--id->buffer id)
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:UnmapWindow :window exwm--container)))
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:icccm:set-WM_STATE
|
||
:window id
|
||
:state xcb:icccm:WM_STATE:IconicState
|
||
:icon xcb:Window:None))
|
||
(xcb:flush exwm--connection)))
|
||
|
||
;;;###autoload
|
||
(defun exwm-layout-set-fullscreen (&optional id)
|
||
"Make window ID fullscreen."
|
||
(interactive)
|
||
(with-current-buffer (if id (exwm--id->buffer id) (window-buffer))
|
||
(when exwm--fullscreen
|
||
(user-error "Already in full-screen mode."))
|
||
;; Set the floating frame fullscreen first when the client is floating
|
||
(when exwm--floating-frame
|
||
(let* ((geometry (xcb:+request-unchecked+reply exwm--connection
|
||
(make-instance 'xcb:GetGeometry
|
||
:drawable exwm--container))))
|
||
(setq exwm--floating-frame-position
|
||
(vector (slot-value geometry 'x) (slot-value geometry 'y))))
|
||
(xcb:flush exwm--connection))
|
||
(exwm-layout--resize-container exwm--id exwm--container 0 0
|
||
(frame-pixel-width exwm-workspace--current)
|
||
(frame-pixel-height
|
||
exwm-workspace--current))
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:ewmh:set-_NET_WM_STATE
|
||
:window exwm--id
|
||
:data (vector xcb:Atom:_NET_WM_STATE_FULLSCREEN)))
|
||
(xcb:flush exwm--connection)
|
||
(setq exwm--fullscreen t)
|
||
(exwm-input-release-keyboard)))
|
||
|
||
(defun exwm-layout-unset-fullscreen (&optional id)
|
||
"Restore window from fullscreen state."
|
||
(interactive)
|
||
(with-current-buffer (if id (exwm--id->buffer id) (window-buffer))
|
||
(unless exwm--fullscreen
|
||
(user-error "Not in full-screen mode."))
|
||
;; Restore the floating frame if the client is floating
|
||
(when exwm--floating-frame
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:ConfigureWindow
|
||
:window exwm--container
|
||
:value-mask (eval-when-compile
|
||
(logior xcb:ConfigWindow:X
|
||
xcb:ConfigWindow:Y))
|
||
:x (elt exwm--floating-frame-position 0)
|
||
:y (elt exwm--floating-frame-position 1))))
|
||
(exwm-layout--show exwm--id)
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:ewmh:set-_NET_WM_STATE :window exwm--id :data []))
|
||
(xcb:flush exwm--connection)
|
||
(setq exwm--fullscreen nil)
|
||
(exwm-input-grab-keyboard)))
|
||
|
||
;; This function is superficially similar to `exwm-layout-set-fullscreen', but
|
||
;; they do very different things: `exwm-layout--set-frame-fullscreen' resizes a
|
||
;; frame to the actual monitor size, `exwm-layout-set-fullscreen' resizes an X
|
||
;; window to the frame size.
|
||
(defun exwm-layout--set-frame-fullscreen (frame)
|
||
"Make frame FRAME fullscreen, with regard to its RandR output if applicable."
|
||
(let ((geometry (or (frame-parameter frame 'exwm-geometry)
|
||
(xcb:+request-unchecked+reply exwm--connection
|
||
(make-instance 'xcb:GetGeometry
|
||
:drawable exwm--root))
|
||
(make-instance 'xcb:RECTANGLE :x 0 :y 0
|
||
:width (x-display-pixel-width)
|
||
:height (x-display-pixel-height))))
|
||
(id (frame-parameter frame 'exwm-outer-id))
|
||
(workspace (frame-parameter frame 'exwm-workspace)))
|
||
(with-slots (x y width height) geometry
|
||
(when (and (eq frame exwm-workspace--current)
|
||
(exwm-workspace--minibuffer-own-frame-p))
|
||
(exwm-workspace--resize-minibuffer-frame width height))
|
||
(exwm-layout--resize-container id workspace x y width height)
|
||
(xcb:flush exwm--connection))))
|
||
|
||
(defvar exwm-layout-show-all-buffers nil
|
||
"Non-nil to allow switching to buffers on other workspaces.")
|
||
|
||
(defun exwm-layout--refresh ()
|
||
"Refresh layout."
|
||
(let ((frame (selected-frame))
|
||
(placeholder (or (get-buffer "*scratch*")
|
||
(progn
|
||
(set-buffer-major-mode
|
||
(get-buffer-create "*scratch*"))
|
||
(get-buffer "*scratch*"))))
|
||
windows)
|
||
(if (not (memq frame exwm-workspace--list))
|
||
(if (frame-parameter frame 'exwm-outer-id)
|
||
;; Refresh a floating frame
|
||
(when (eq major-mode 'exwm-mode)
|
||
(let ((window (frame-first-window frame)))
|
||
(with-current-buffer (window-buffer window)
|
||
(exwm--log "Refresh floating window #x%x" exwm--id)
|
||
(exwm-layout--show exwm--id window))))
|
||
;; Other frames (e.g. terminal/graphical frame of emacsclient)
|
||
;; We shall bury all `exwm-mode' buffers in this case
|
||
(setq windows (window-list frame 0)) ;exclude minibuffer
|
||
(dolist (window windows)
|
||
(with-current-buffer (window-buffer window)
|
||
(when (eq major-mode 'exwm-mode)
|
||
(set-window-buffer window placeholder)))))
|
||
;; Refresh the whole workspace
|
||
;; Workspaces other than the active one can also be refreshed (RandR)
|
||
(exwm--log "Refresh workspace %s" frame)
|
||
(dolist (pair exwm--id-buffer-alist)
|
||
(with-current-buffer (cdr pair)
|
||
(when (and (not exwm--floating-frame) ;exclude floating X windows
|
||
(or exwm-layout-show-all-buffers
|
||
;; Exclude X windows on other workspaces
|
||
(eq frame exwm--frame)))
|
||
(setq windows (get-buffer-window-list (current-buffer) 0))
|
||
(if (not windows)
|
||
(when (eq frame exwm--frame) ;for exwm-layout-show-all-buffers
|
||
(exwm-layout--hide exwm--id))
|
||
(if (eq frame exwm--frame)
|
||
(exwm-layout--show exwm--id (car windows))
|
||
(exwm-workspace-move-window
|
||
(cl-position frame exwm-workspace--list) exwm--id))
|
||
(let ((window (car windows)))
|
||
;; Make sure this buffer is not displayed elsewhere
|
||
(dolist (i (get-buffer-window-list (current-buffer) 0 t))
|
||
(unless (eq i window)
|
||
(set-window-buffer i placeholder))))))))
|
||
;; Make sure windows floating / on other workspaces are excluded
|
||
(dolist (window (window-list frame 0))
|
||
(with-current-buffer (window-buffer window)
|
||
(when (and (eq major-mode 'exwm-mode)
|
||
(or exwm--floating-frame (not (eq frame exwm--frame))))
|
||
(set-window-buffer window placeholder))))
|
||
;; Update _NET_CLIENT_LIST_STACKING
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:ewmh:set-_NET_CLIENT_LIST_STACKING
|
||
:window exwm--root
|
||
:data (vconcat
|
||
(delq nil
|
||
(mapcar
|
||
(lambda (buffer)
|
||
(with-current-buffer buffer
|
||
(when (eq major-mode 'exwm-mode)
|
||
exwm--id)))
|
||
(buffer-list))))))
|
||
(xcb:flush exwm--connection))))
|
||
|
||
(defun exwm-layout--on-minibuffer-setup ()
|
||
"Refresh layout when minibuffer grows."
|
||
(run-with-idle-timer 0.01 nil ;FIXME
|
||
(lambda ()
|
||
(when (< 1 (window-height (minibuffer-window)))
|
||
(exwm-layout--refresh))))
|
||
;; Set input focus on the Emacs frame
|
||
(x-focus-frame (window-frame (minibuffer-selected-window))))
|
||
|
||
(defun exwm-layout--on-echo-area-change (&optional dirty)
|
||
"Run when message arrives or in `echo-area-clear-hook' to refresh layout."
|
||
(when (and (current-message)
|
||
(or (cl-position ?\n (current-message))
|
||
(> (length (current-message))
|
||
(frame-width exwm-workspace--current))))
|
||
(if dirty
|
||
(exwm-layout--refresh)
|
||
(run-with-idle-timer 0.01 nil #'exwm-layout--refresh)))) ;FIXME
|
||
|
||
(defun exwm-layout-enlarge-window (delta &optional horizontal)
|
||
"Make the selected window DELTA pixels taller.
|
||
|
||
If no argument is given, make the selected window one pixel taller. If the
|
||
optional argument HORIZONTAL is non-nil, make selected window DELTA pixels
|
||
wider. If DELTA is negative, shrink selected window by -DELTA pixels.
|
||
|
||
Normal hints are checked and regarded if the selected window is displaying an
|
||
`exwm-mode' buffer. However, this may violate the normal hints set on other X
|
||
windows."
|
||
(interactive "p")
|
||
(cond
|
||
((zerop delta)) ;no operation
|
||
((window-minibuffer-p)) ;avoid resize minibuffer-window
|
||
((not (and (eq major-mode 'exwm-mode) exwm--floating-frame))
|
||
;; Resize on tiling layout
|
||
(unless (= 0 (window-resizable nil delta horizontal nil t)) ;not resizable
|
||
(let ((window-resize-pixelwise t))
|
||
(window-resize nil delta horizontal nil t))))
|
||
;; Resize on floating layout
|
||
(exwm--fixed-size) ;fixed size
|
||
(horizontal
|
||
(let* ((width (frame-pixel-width))
|
||
(edges (window-inside-pixel-edges))
|
||
(inner-width (- (elt edges 2) (elt edges 0)))
|
||
(margin (- width inner-width)))
|
||
(if (> delta 0)
|
||
(if (not exwm--normal-hints-max-width)
|
||
(cl-incf width delta)
|
||
(if (>= inner-width exwm--normal-hints-max-width)
|
||
(setq width nil)
|
||
(setq width (min (+ exwm--normal-hints-max-width margin)
|
||
(+ width delta)))))
|
||
(if (not exwm--normal-hints-min-width)
|
||
(cl-incf width delta)
|
||
(if (<= inner-width exwm--normal-hints-min-width)
|
||
(setq width nil)
|
||
(setq width (max (+ exwm--normal-hints-min-width margin)
|
||
(+ width delta))))))
|
||
(when width
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:ConfigureWindow
|
||
:window (frame-parameter exwm--floating-frame
|
||
'exwm-outer-id)
|
||
:value-mask xcb:ConfigWindow:Width
|
||
:width width))
|
||
(xcb:flush exwm--connection))))
|
||
(t
|
||
(let* ((height (frame-pixel-height))
|
||
(edges (window-inside-pixel-edges))
|
||
(inner-height (- (elt edges 3) (elt edges 1)))
|
||
(margin (- height inner-height)))
|
||
(if (> delta 0)
|
||
(if (not exwm--normal-hints-max-height)
|
||
(cl-incf height delta)
|
||
(if (>= inner-height exwm--normal-hints-max-height)
|
||
(setq height nil)
|
||
(setq height (min (+ exwm--normal-hints-max-height margin)
|
||
(+ height delta)))))
|
||
(if (not exwm--normal-hints-min-height)
|
||
(cl-incf height delta)
|
||
(if (<= inner-height exwm--normal-hints-min-height)
|
||
(setq height nil)
|
||
(setq height (max (+ exwm--normal-hints-min-height margin)
|
||
(+ height delta))))))
|
||
(when height
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:ConfigureWindow
|
||
:window (frame-parameter exwm--floating-frame
|
||
'exwm-outer-id)
|
||
:value-mask xcb:ConfigWindow:Height
|
||
:height height))
|
||
(xcb:flush exwm--connection))))))
|
||
|
||
(defun exwm-layout-enlarge-window-horizontally (delta)
|
||
"Make the selected window DELTA pixels wider.
|
||
|
||
See also `exwm-layout-enlarge-window'."
|
||
(interactive "p")
|
||
(exwm-layout-enlarge-window delta t))
|
||
|
||
(defun exwm-layout-shrink-window (delta)
|
||
"Make the selected window DELTA pixels lower.
|
||
|
||
See also `exwm-layout-enlarge-window'."
|
||
(interactive "p")
|
||
(exwm-layout-enlarge-window (- delta)))
|
||
|
||
(defun exwm-layout-shrink-window-horizontally (delta)
|
||
"Make the selected window DELTA pixels narrower.
|
||
|
||
See also `exwm-layout-enlarge-window'."
|
||
(interactive "p")
|
||
(exwm-layout-enlarge-window (- delta) t))
|
||
|
||
(defun exwm-layout-hide-mode-line ()
|
||
"Hide mode-line."
|
||
(interactive)
|
||
(when (and (eq major-mode 'exwm-mode) mode-line-format)
|
||
(setq exwm--mode-line-format mode-line-format
|
||
mode-line-format nil)
|
||
(if (not exwm--floating-frame)
|
||
(exwm-layout--show exwm--id)
|
||
(exwm-floating--fit-frame-to-window)
|
||
(xcb:flush exwm--connection)
|
||
(setq window-size-fixed exwm--fixed-size))))
|
||
|
||
(defun exwm-layout-show-mode-line ()
|
||
"Show mode-line."
|
||
(interactive)
|
||
(when (and (eq major-mode 'exwm-mode) (not mode-line-format))
|
||
(setq mode-line-format exwm--mode-line-format
|
||
exwm--mode-line-format nil)
|
||
(if (not exwm--floating-frame)
|
||
(exwm-layout--show exwm--id)
|
||
(exwm-floating--fit-frame-to-window)
|
||
(exwm-input-grab-keyboard)
|
||
(xcb:flush exwm--connection)
|
||
(setq window-size-fixed exwm--fixed-size))))
|
||
|
||
;;;###autoload
|
||
(defun exwm-layout-toggle-mode-line ()
|
||
"Toggle the display of mode-line."
|
||
(interactive)
|
||
(when (eq major-mode 'exwm-mode)
|
||
(if mode-line-format
|
||
(exwm-layout-hide-mode-line)
|
||
(exwm-layout-show-mode-line))))
|
||
|
||
(defun exwm-layout--init ()
|
||
"Initialize layout module."
|
||
;; Auto refresh layout
|
||
(add-hook 'window-configuration-change-hook #'exwm-layout--refresh)
|
||
(unless (exwm-workspace--minibuffer-own-frame-p)
|
||
;; Refresh when minibuffer grows
|
||
(add-hook 'minibuffer-setup-hook #'exwm-layout--on-minibuffer-setup t)
|
||
(run-with-idle-timer 0 t #'exwm-layout--on-echo-area-change t)
|
||
(add-hook 'echo-area-clear-hook #'exwm-layout--on-echo-area-change)))
|
||
|
||
|
||
|
||
(provide 'exwm-layout)
|
||
|
||
;;; exwm-layout.el ends here
|