210 lines
9.5 KiB
EmacsLisp
210 lines
9.5 KiB
EmacsLisp
;;; exwm-layout.el --- Layout Module for EXWM -*- lexical-binding: t -*-
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;; Copyright (C) 2015 Chris Feng
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;; Author: Chris Feng <chris.w.feng@gmail.com>
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;; Keywords: unix
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;; This file is not part of GNU Emacs.
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;; This file 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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;; This file 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 this file. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;; This module is responsible for keeping X client window properly displayed.
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;;; Code:
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(defun exwm-layout--show (id &optional window)
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"Show window ID exactly fit in the Emacs window WINDOW."
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(exwm--log "Show #x%x in %s" id window)
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(xcb:+request exwm--connection (make-instance 'xcb:MapWindow :window id))
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(xcb:+request exwm--connection
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(make-instance 'xcb:icccm:set-WM_STATE
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:window id :state xcb:icccm:WM_STATE:NormalState
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:icon xcb:Window:None))
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(let* ((edges (or (exwm--with-current-id id exwm--floating-edges)
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(window-inside-pixel-edges window)))
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(x (elt edges 0))
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(y (elt edges 1))
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(width (- (elt edges 2) (elt edges 0)))
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(height (- (elt edges 3) (elt edges 1))))
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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 (logior xcb:ConfigWindow:X
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xcb:ConfigWindow:Y
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xcb:ConfigWindow:Width
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xcb:ConfigWindow:Height
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xcb:ConfigWindow:StackMode)
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:x x :y y :width width :height height
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;; In order to put non-floating window at bottom
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:stack-mode xcb:StackMode:Below))
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(xcb:+request exwm--connection
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(make-instance 'xcb:SendEvent
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:propagate 0 :destination id
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:event-mask xcb:EventMask:StructureNotify
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:event (xcb:marshal
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(make-instance 'xcb:ConfigureNotify
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:event id :window id
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:above-sibling xcb:Window:None
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:x x :y y
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:width width :height height
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:border-width 0
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:override-redirect 0)
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exwm--connection))))
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(xcb:flush exwm--connection))
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(defun exwm-layout--hide (id)
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"Hide window ID."
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(unless (eq xcb:icccm:WM_STATE:IconicState ;already hidden
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(with-current-buffer (exwm--id->buffer id) exwm-state))
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(exwm--log "Hide #x%x" id)
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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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(xcb:+request exwm--connection (make-instance 'xcb:UnmapWindow :window id))
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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 exwm--client-event-mask))
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(xcb:+request exwm--connection
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(make-instance 'xcb:icccm:set-WM_STATE
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:window id
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:state xcb:icccm:WM_STATE:IconicState
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:icon xcb:Window:None))
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(xcb:flush exwm--connection)))
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(defun exwm-layout-set-fullscreen (&optional id)
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"Make window ID fullscreen."
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(interactive)
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(with-current-buffer (if id (exwm--id->buffer id) (window-buffer))
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;; Set the floating frame fullscreen first when the client is floating
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(when exwm--floating-frame
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(let* ((outer-id (frame-parameter exwm--floating-frame 'exwm-outer-id))
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(geometry (xcb:+request-unchecked+reply exwm--connection
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(make-instance 'xcb:GetGeometry
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:drawable outer-id))))
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(setq exwm--floating-frame-geometry
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(vector (slot-value geometry 'x) (slot-value geometry 'y)
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(slot-value geometry 'width)
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(slot-value geometry 'height)))
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(xcb:+request exwm--connection
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(make-instance 'xcb:ConfigureWindow
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:window outer-id
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:value-mask (logior xcb:ConfigWindow:X
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xcb:ConfigWindow:Y
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xcb:ConfigWindow:Width
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xcb:ConfigWindow:Height)
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:x 0 :y 0
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:width (x-display-pixel-width)
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:height (x-display-pixel-height))))
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(xcb:flush exwm--connection))
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(xcb:+request exwm--connection
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(make-instance 'xcb:ConfigureWindow
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:window exwm--id
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:value-mask (logior xcb:ConfigWindow:X
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xcb:ConfigWindow:Y
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xcb:ConfigWindow:Width
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xcb:ConfigWindow:Height)
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:x 0 :y 0
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:width (x-display-pixel-width)
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:height (x-display-pixel-height)))
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(xcb:+request exwm--connection
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(make-instance 'xcb:ewmh:set-_NET_WM_STATE
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:window exwm--id
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:data (vector xcb:Atom:_NET_WM_STATE_FULLSCREEN)))
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(xcb:flush exwm--connection)
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(cl-assert (not exwm--fullscreen))
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(setq exwm--fullscreen t)
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(exwm-input-release-keyboard)))
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(defun exwm-layout-unset-fullscreen (&optional id)
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"Restore window from fullscreen state."
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(interactive)
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(with-current-buffer (if id (exwm--id->buffer id) (window-buffer))
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;; Restore the floating frame if the client is floating
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(when exwm--floating-frame
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(xcb:+request exwm--connection
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(make-instance 'xcb:ConfigureWindow
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:window (frame-parameter exwm--floating-frame
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'exwm-outer-id)
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:value-mask (logior xcb:ConfigWindow:X
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xcb:ConfigWindow:Y
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xcb:ConfigWindow:Width
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xcb:ConfigWindow:Height)
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:x (elt exwm--floating-frame-geometry 0)
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:y (elt exwm--floating-frame-geometry 1)
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:width (elt exwm--floating-frame-geometry 2)
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:height (elt exwm--floating-frame-geometry 3))))
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(exwm-layout--show exwm--id)
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(xcb:+request exwm--connection
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(make-instance 'xcb:ewmh:set-_NET_WM_STATE :window exwm--id :data []))
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(xcb:flush exwm--connection)
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(cl-assert exwm--fullscreen)
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(setq exwm--fullscreen nil)
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(exwm-input-grab-keyboard)))
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(defun exwm-layout--refresh ()
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"Refresh layout."
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(let ((frame (selected-frame))
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windows placeholder)
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(if (not (memq frame exwm-workspace--list))
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;; Refresh a floating frame
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(progn
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(cl-assert (eq major-mode 'exwm-mode))
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(let ((window (frame-first-window frame)))
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(with-current-buffer (window-buffer window)
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(exwm--log "Refresh floating window #x%x" exwm--id)
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(exwm-layout--show exwm--id window))))
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;; Refresh the whole workspace
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;; Workspaces other than the active one can also be refreshed (RandR)
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(exwm--log "Refresh workspace %s" frame)
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(let ((placeholder (get-buffer "*scratch*")))
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(unless placeholder ;create the *scratch* buffer if it's killed
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(setq placeholder (get-buffer-create "*scratch*"))
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(set-buffer-major-mode placeholder))
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(dolist (pair exwm--id-buffer-alist)
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(with-current-buffer (cdr pair)
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;; Exclude windows on other workspaces and floating frames
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(when (and (eq frame exwm--frame) (not exwm--floating-frame))
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(setq windows (get-buffer-window-list (current-buffer) 0))
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(if (not windows)
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(exwm-layout--hide exwm--id)
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(exwm-layout--show exwm--id (car windows))
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(dolist (i (cdr windows))
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(set-window-buffer i placeholder))))))))))
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(defun exwm-layout--on-minibuffer-setup ()
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"Refresh layout when minibuffer grows."
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(run-with-idle-timer 0.01 nil ;FIXME
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(lambda ()
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(when (and (< 1 (window-height (minibuffer-window)))
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(not (and (eq major-mode 'exwm-mode)
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exwm--floating-frame)))
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(exwm-layout--refresh)))))
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(defun exwm-layout--init ()
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"Initialize layout module."
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;; Auto refresh layout
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(add-hook 'window-configuration-change-hook 'exwm-layout--refresh)
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;; Refresh when minibuffer grows
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(add-hook 'minibuffer-setup-hook 'exwm-layout--on-minibuffer-setup t))
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(provide 'exwm-layout)
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;;; exwm-layout.el ends here
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