mirror of
https://github.com/emacs-exwm/exwm.git
synced 2024-11-27 14:57:59 +01:00
1ce18afd05
This commit makes a floating window centered to its leading window if it has a valid WM_TRANSIENT_FOR property set. Other it's placed at the center of the screen.
429 lines
21 KiB
EmacsLisp
429 lines
21 KiB
EmacsLisp
;;; exwm-floating.el --- Floating Module for EXWM -*- lexical-binding: t -*-
|
||
|
||
;; Copyright (C) 2015 Chris Feng
|
||
|
||
;; Author: Chris Feng <chris.w.feng@gmail.com>
|
||
;; Keywords: unix
|
||
|
||
;; This file is not part of GNU Emacs.
|
||
|
||
;; This file 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.
|
||
|
||
;; This file 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 this file. If not, see <http://www.gnu.org/licenses/>.
|
||
|
||
;;; Commentary:
|
||
|
||
;; This module deals with the conversion between floating and non-floating
|
||
;; states and implements moving/resizing operations on floating windows.
|
||
|
||
;; Todo:
|
||
;; + move/resize with keyboard.
|
||
|
||
;;; Code:
|
||
|
||
(require 'xcb-cursor)
|
||
|
||
(defvar exwm-floating-border-width 1 "Border width of the floating window.")
|
||
(defvar exwm-floating-border-color "blue"
|
||
"Border color of the floating window.")
|
||
|
||
(defun exwm-floating--set-floating (id)
|
||
"Make window ID floating."
|
||
(interactive)
|
||
(when (get-buffer-window (exwm--id->buffer id)) ;window in non-floating state
|
||
(set-window-buffer (selected-window) (other-buffer))) ;hide it first
|
||
(let* ((original-frame
|
||
(with-current-buffer (exwm--id->buffer id)
|
||
(if (and exwm-transient-for (exwm--id->buffer exwm-transient-for))
|
||
;; Place a modal in the same workspace with its leading window
|
||
(with-current-buffer (exwm--id->buffer exwm-transient-for)
|
||
exwm--frame)
|
||
;; Fallback to current workspace
|
||
exwm-workspace--current)))
|
||
(original-id (frame-parameter original-frame 'exwm-window-id))
|
||
;; Create new frame
|
||
(frame (with-current-buffer "*scratch*"
|
||
(prog2
|
||
(exwm--lock)
|
||
(make-frame
|
||
`((minibuffer . nil) ;use the one on workspace
|
||
(background-color . ,exwm-floating-border-color)
|
||
(internal-border-width . ,exwm-floating-border-width)
|
||
(unsplittable . t))) ;and fix the size later
|
||
(exwm--unlock))))
|
||
(frame-id (string-to-int (frame-parameter frame 'window-id)))
|
||
(outer-id (string-to-int (frame-parameter frame 'outer-window-id)))
|
||
(window (frame-first-window frame)) ;and it's the only window
|
||
(x (slot-value exwm--geometry 'x))
|
||
(y (slot-value exwm--geometry 'y))
|
||
(width (slot-value exwm--geometry 'width))
|
||
(height (slot-value exwm--geometry 'height)))
|
||
(exwm--log "Floating geometry (original): %dx%d%+d%+d" width height x y)
|
||
;; Save window IDs
|
||
(set-frame-parameter frame 'exwm-window-id frame-id)
|
||
(set-frame-parameter frame 'exwm-outer-id outer-id)
|
||
;; Set urgency flag if it's not appear in the active workspace
|
||
(let ((idx (cl-position original-frame exwm-workspace--list)))
|
||
(when (/= idx exwm-workspace-current-index)
|
||
(set-frame-parameter original-frame 'exwm--urgency t)
|
||
(exwm-workspace--update-switch-history)))
|
||
;; Fix illegal parameters
|
||
;; FIXME: check normal hints restrictions
|
||
(let* ((display-width (x-display-pixel-width))
|
||
(display-height (- (x-display-pixel-height)
|
||
(window-pixel-height (minibuffer-window
|
||
original-frame))
|
||
(* 2 (window-mode-line-height))
|
||
(window-header-line-height window)
|
||
(* 2 exwm-floating-border-width)))
|
||
(display-height (* 2 (/ display-height 2)))) ;round to even
|
||
(if (> width display-width)
|
||
;; Too wide
|
||
(progn (setq x 0
|
||
width display-width))
|
||
;; Invalid width
|
||
(when (= 0 width) (setq width (/ display-width 2)))
|
||
;; Completely outsize
|
||
(when (or (> x display-width) (> 0 (+ x display-width)))
|
||
(setq x (/ (- display-width width) 2))))
|
||
(if (> height display-height)
|
||
;; Too tall
|
||
(setq y 0
|
||
height display-height)
|
||
;; Invalid height
|
||
(when (= 0 height) (setq height (/ display-height 2)))
|
||
;; Completely outside
|
||
(when (or (> y display-height) (> 0 (+ y display-height)))
|
||
(setq y (/ (- display-height height) 2))))
|
||
;; Center floating windows
|
||
(when (and (= x 0) (= y 0))
|
||
(let ((buffer (exwm--id->buffer exwm-transient-for))
|
||
window edges)
|
||
(when (and buffer (setq window (get-buffer-window buffer)))
|
||
(setq edges (window-inside-absolute-pixel-edges window))
|
||
(unless (and (<= width (- (elt edges 2) (elt edges 0)))
|
||
(<= height (- (elt edges 3) (elt edges 1))))
|
||
(setq edges nil)))
|
||
(if edges
|
||
;; Put at the center of leading window
|
||
(setq x (/ (- (+ (elt edges 2) (elt edges 0)) width) 2)
|
||
y (/ (- (+ (elt edges 3) (elt edges 1)) height) 2))
|
||
;; Put at the center of screen
|
||
(setq x (/ (- display-width width) 2)
|
||
y (/ (- display-height height) 2))))))
|
||
(exwm--log "Floating geometry (corrected): %dx%d%+d%+d" width height x y)
|
||
;; Set OverrideRedirect on this frame
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:ChangeWindowAttributes
|
||
:window outer-id :value-mask xcb:CW:OverrideRedirect
|
||
:override-redirect 1))
|
||
;; Set event mask
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:ChangeWindowAttributes
|
||
:window frame-id :value-mask xcb:CW:EventMask
|
||
:event-mask xcb:EventMask:SubstructureRedirect))
|
||
;; Reparent this frame to the original one
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:ReparentWindow
|
||
:window outer-id :parent original-id
|
||
:x (- x exwm-floating-border-width)
|
||
:y (- y exwm-floating-border-width)))
|
||
;; Save the geometry
|
||
;; Rationale: the frame will not be ready for some time, thus we cannot
|
||
;; infer the correct window size from its geometry.
|
||
(with-current-buffer (exwm--id->buffer id)
|
||
(setq exwm--floating-edges
|
||
(vector exwm-floating-border-width exwm-floating-border-width
|
||
(+ width exwm-floating-border-width)
|
||
(+ height exwm-floating-border-width))))
|
||
;; Fit frame to client
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:ConfigureWindow
|
||
:window outer-id
|
||
:value-mask (logior xcb:ConfigWindow:Width
|
||
xcb:ConfigWindow:Height
|
||
xcb:ConfigWindow:StackMode)
|
||
:width (+ width (* 2 exwm-floating-border-width))
|
||
:height (+ height (* 2 exwm-floating-border-width)
|
||
(window-mode-line-height)
|
||
(window-header-line-height))
|
||
:stack-mode xcb:StackMode:Above)) ;top-most
|
||
;; Reparent window to this frame
|
||
(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:ReparentWindow
|
||
:window id :parent frame-id
|
||
:x exwm-floating-border-width
|
||
:y exwm-floating-border-width))
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:ChangeWindowAttributes
|
||
:window id :value-mask xcb:CW:EventMask
|
||
:event-mask exwm--client-event-mask))
|
||
(xcb:flush exwm--connection)
|
||
;; Set window/buffer
|
||
(with-current-buffer (exwm--id->buffer id)
|
||
(setq window-size-fixed t ;make frame fixed size
|
||
exwm--frame original-frame
|
||
exwm--floating-frame frame)
|
||
(set-window-buffer window (current-buffer)) ;this changes current buffer
|
||
(set-window-dedicated-p window t))
|
||
(with-current-buffer (exwm--id->buffer id)
|
||
;; Some window should not get input focus on creation
|
||
;; FIXME: other conditions?
|
||
(unless (memq xcb:Atom:_NET_WM_WINDOW_TYPE_UTILITY exwm-window-type)
|
||
(x-focus-frame exwm--floating-frame)
|
||
(exwm-input--set-focus id)))))
|
||
|
||
(defun exwm-floating--unset-floating (id)
|
||
"Make window ID non-floating."
|
||
(interactive)
|
||
(let ((buffer (exwm--id->buffer id)))
|
||
;; Reparent to workspace frame
|
||
(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:ReparentWindow
|
||
:window id
|
||
:parent (frame-parameter exwm-workspace--current
|
||
'exwm-window-id)
|
||
:x 0 :y 0)) ;temporary position
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:ChangeWindowAttributes
|
||
:window id :value-mask xcb:CW:EventMask
|
||
:event-mask exwm--client-event-mask))
|
||
(xcb:flush exwm--connection)
|
||
(with-current-buffer buffer
|
||
(when exwm--floating-frame ;from floating to non-floating
|
||
(setq exwm--floating-edges nil) ;invalid by now
|
||
(set-window-dedicated-p (frame-first-window exwm--floating-frame) nil)
|
||
(delete-frame exwm--floating-frame))) ;remove the floating frame
|
||
(with-current-buffer buffer
|
||
(setq exwm--floating-frame nil
|
||
exwm--frame exwm-workspace--current))
|
||
(select-frame exwm-workspace--current t)
|
||
(set-window-buffer nil buffer)
|
||
(exwm-input--set-focus id)))
|
||
|
||
(defun exwm-floating-toggle-floating ()
|
||
"Toggle the current window between floating and non-floating states."
|
||
(interactive)
|
||
(with-current-buffer (window-buffer)
|
||
(if exwm--floating-frame
|
||
(exwm-floating--unset-floating exwm--id)
|
||
(exwm-floating--set-floating exwm--id))))
|
||
|
||
(defvar exwm-floating--moveresize-calculate nil
|
||
"Calculate move/resize parameters [frame-id event-mask x y width height].")
|
||
|
||
(defun exwm-floating--start-moveresize (id &optional type)
|
||
"Start move/resize."
|
||
(let ((buffer (exwm--id->buffer id))
|
||
frame frame-id cursor)
|
||
(when (and buffer
|
||
(setq frame (with-current-buffer buffer exwm--floating-frame))
|
||
(setq frame-id (frame-parameter frame 'exwm-outer-id))
|
||
;; Test if the pointer can be grabbed
|
||
(= xcb:GrabStatus:Success
|
||
(slot-value
|
||
(xcb:+request-unchecked+reply exwm--connection
|
||
(make-instance 'xcb:GrabPointer
|
||
:owner-events 0 :grab-window frame-id
|
||
:event-mask xcb:EventMask:NoEvent
|
||
:pointer-mode xcb:GrabMode:Async
|
||
:keyboard-mode xcb:GrabMode:Async
|
||
:confine-to xcb:Window:None
|
||
:cursor xcb:Cursor:None
|
||
:time xcb:Time:CurrentTime))
|
||
'status)))
|
||
(setq exwm--floating-edges nil) ;invalid by now
|
||
(with-slots (root-x root-y win-x win-y)
|
||
(xcb:+request-unchecked+reply exwm--connection
|
||
(make-instance 'xcb:QueryPointer :window id))
|
||
(select-frame-set-input-focus frame) ;raise and focus it
|
||
(setq width (frame-pixel-width frame)
|
||
height (frame-pixel-height frame))
|
||
(unless type
|
||
;; Determine the resize type according to the pointer position
|
||
;; Clicking the center 1/3 part to resize has not effect
|
||
(setq x (/ (* 3 win-x) (float width))
|
||
y (/ (* 3 win-y) (float height))
|
||
type (cond ((and (< x 1) (< y 1))
|
||
xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_TOPLEFT)
|
||
((and (> x 2) (< y 1))
|
||
xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_TOPRIGHT)
|
||
((and (> x 2) (> y 2))
|
||
xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_BOTTOMRIGHT)
|
||
((and (< x 1) (> y 2))
|
||
xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_BOTTOMLEFT)
|
||
((< y 1) xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_TOP)
|
||
((> x 2) xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_RIGHT)
|
||
((> y 2) xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_BOTTOM)
|
||
((< x 1) xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_LEFT))))
|
||
(when type
|
||
(cond ((= type xcb:ewmh:_NET_WM_MOVERESIZE_MOVE)
|
||
(setq cursor exwm-floating--cursor-move
|
||
exwm-floating--moveresize-calculate
|
||
`(lambda (x y)
|
||
(vector ,frame-id
|
||
,(logior xcb:ConfigWindow:X
|
||
xcb:ConfigWindow:Y)
|
||
(- x ,win-x) (- y ,win-y) 0 0))))
|
||
((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_TOPLEFT)
|
||
(setq cursor exwm-floating--cursor-top-left
|
||
exwm-floating--moveresize-calculate
|
||
`(lambda (x y)
|
||
(vector ,frame-id
|
||
,(logior xcb:ConfigWindow:X
|
||
xcb:ConfigWindow:Y
|
||
xcb:ConfigWindow:Width
|
||
xcb:ConfigWindow:Height)
|
||
(- x ,win-x) (- y ,win-y)
|
||
(- ,(+ root-x width) x)
|
||
(- ,(+ root-y height) y)))))
|
||
((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_TOP)
|
||
(setq cursor exwm-floating--cursor-top
|
||
exwm-floating--moveresize-calculate
|
||
`(lambda (x y)
|
||
(vector ,frame-id
|
||
,(logior xcb:ConfigWindow:Y
|
||
xcb:ConfigWindow:Height)
|
||
0 (- y ,win-y) 0 (- ,(+ root-y height) y)))))
|
||
((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_TOPRIGHT)
|
||
(setq cursor exwm-floating--cursor-top-right
|
||
exwm-floating--moveresize-calculate
|
||
`(lambda (x y)
|
||
(vector ,frame-id
|
||
,(logior xcb:ConfigWindow:Y
|
||
xcb:ConfigWindow:Width
|
||
xcb:ConfigWindow:Height)
|
||
0 (- y ,win-y) (- x ,(- root-x width))
|
||
(- ,(+ root-y height) y)))))
|
||
((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_RIGHT)
|
||
(setq cursor exwm-floating--cursor-right
|
||
exwm-floating--moveresize-calculate
|
||
`(lambda (x y)
|
||
(vector ,frame-id ,xcb:ConfigWindow:Width
|
||
0 0 (- x ,(- root-x width)) 0))))
|
||
((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_BOTTOMRIGHT)
|
||
(setq cursor exwm-floating--cursor-bottom-right
|
||
exwm-floating--moveresize-calculate
|
||
`(lambda (x y)
|
||
(vector ,frame-id
|
||
,(logior xcb:ConfigWindow:Width
|
||
xcb:ConfigWindow:Height)
|
||
0 0 (- x ,(- root-x width))
|
||
(- y ,(- root-y height))))))
|
||
((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_BOTTOM)
|
||
(setq cursor exwm-floating--cursor-bottom
|
||
exwm-floating--moveresize-calculate
|
||
`(lambda (x y)
|
||
(vector ,frame-id
|
||
,xcb:ConfigWindow:Height
|
||
0 0 0 (- y ,(- root-y height))))))
|
||
((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_BOTTOMLEFT)
|
||
(setq cursor exwm-floating--cursor-bottom-left
|
||
exwm-floating--moveresize-calculate
|
||
`(lambda (x y)
|
||
(vector ,frame-id
|
||
,(logior xcb:ConfigWindow:X
|
||
xcb:ConfigWindow:Width
|
||
xcb:ConfigWindow:Height)
|
||
(- x ,win-x)
|
||
0
|
||
(- ,(+ root-x width) x)
|
||
(- y ,(- root-y height))))))
|
||
((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_LEFT)
|
||
(setq cursor exwm-floating--cursor-left
|
||
exwm-floating--moveresize-calculate
|
||
`(lambda (x y)
|
||
(vector ,frame-id
|
||
,(logior xcb:ConfigWindow:X
|
||
xcb:ConfigWindow:Width)
|
||
(- x ,win-x) 0 (- ,(+ root-x width) x) 0)))))
|
||
;; Select events and change cursor (should always succeed)
|
||
(xcb:+request-unchecked+reply exwm--connection
|
||
(make-instance 'xcb:GrabPointer
|
||
:owner-events 0 :grab-window frame-id
|
||
:event-mask (logior xcb:EventMask:ButtonRelease
|
||
xcb:EventMask:ButtonMotion)
|
||
:pointer-mode xcb:GrabMode:Async
|
||
:keyboard-mode xcb:GrabMode:Async
|
||
:confine-to xcb:Window:None
|
||
:cursor cursor
|
||
:time xcb:Time:CurrentTime)))))))
|
||
|
||
(defun exwm-floating--stop-moveresize (&rest args)
|
||
"Stop move/resize."
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:UngrabPointer :time xcb:Time:CurrentTime))
|
||
(xcb:flush exwm--connection)
|
||
(setq exwm-floating--moveresize-calculate nil))
|
||
|
||
(defun exwm-floating--do-moveresize (data synthetic)
|
||
"Perform move/resize."
|
||
(when exwm-floating--moveresize-calculate
|
||
(let ((obj (make-instance 'xcb:MotionNotify))
|
||
result)
|
||
(xcb:unmarshal obj data)
|
||
(setq result (funcall exwm-floating--moveresize-calculate
|
||
(slot-value obj 'root-x) (slot-value obj 'root-y)))
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:ConfigureWindow
|
||
:window (elt result 0) :value-mask (elt result 1)
|
||
:x (elt result 2) :y (elt result 3)
|
||
:width (elt result 4) :height (elt result 5)))
|
||
(xcb:flush exwm--connection))))
|
||
|
||
;; Cursors for moving/resizing a window
|
||
(defvar exwm-floating--cursor-move nil)
|
||
(defvar exwm-floating--cursor-top-left nil)
|
||
(defvar exwm-floating--cursor-top nil)
|
||
(defvar exwm-floating--cursor-top-right nil)
|
||
(defvar exwm-floating--cursor-right nil)
|
||
(defvar exwm-floating--cursor-bottom-right nil)
|
||
(defvar exwm-floating--cursor-bottom nil)
|
||
(defvar exwm-floating--cursor-bottom-left nil)
|
||
(defvar exwm-floating--cursor-left nil)
|
||
|
||
(defun exwm-floating--init ()
|
||
"Initialize floating module."
|
||
;; Initialize cursors for moving/resizing a window
|
||
(xcb:cursor:init exwm--connection)
|
||
(setq exwm-floating--cursor-move
|
||
(xcb:cursor:load-cursor exwm--connection "fleur")
|
||
exwm-floating--cursor-top-left
|
||
(xcb:cursor:load-cursor exwm--connection "top_left_corner")
|
||
exwm-floating--cursor-top
|
||
(xcb:cursor:load-cursor exwm--connection "top_side")
|
||
exwm-floating--cursor-top-right
|
||
(xcb:cursor:load-cursor exwm--connection "top_right_corner")
|
||
exwm-floating--cursor-right
|
||
(xcb:cursor:load-cursor exwm--connection "right_side")
|
||
exwm-floating--cursor-bottom-right
|
||
(xcb:cursor:load-cursor exwm--connection "bottom_right_corner")
|
||
exwm-floating--cursor-bottom
|
||
(xcb:cursor:load-cursor exwm--connection "bottom_side")
|
||
exwm-floating--cursor-bottom-left
|
||
(xcb:cursor:load-cursor exwm--connection "bottom_left_corner")
|
||
exwm-floating--cursor-left
|
||
(xcb:cursor:load-cursor exwm--connection "left_side")))
|
||
|
||
|
||
|
||
(provide 'exwm-floating)
|
||
|
||
;;; exwm-floating.el ends here
|