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tvl-depot/exwm-floating.el

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First commit
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;;; 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.")
Provide hooks run when the floating state of a window changes (close #28)
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(defvar exwm-floating-setup-hook nil
"Normal hook run when a window has been made floating.")
(defvar exwm-floating-exit-hook nil
"Normal hook run when a window has exited floating state.")
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(defun exwm-floating--set-floating (id)
"Make window ID floating."
(interactive)
Fix multi-screen bugs * RandR module is now made optional; users can enable it with `exwm-randr-enable`. * Correct the calculation of sizes/coordinates at various places. * Input focus is now tracked with (Emacs) window instead of buffer since the latter can be ambiguous in multi-screen settings.
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(let ((window (get-buffer-window (exwm--id->buffer id))))
(when window ;window in non-floating state
(set-window-buffer window (other-buffer)))) ;hide it first
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(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*"
Fix emacsclient bugs `emacsclient` started with `-c` or `-t` argument create a new frame that shall not be used to manage X windows. Also fix some related input focus issues (with some remaining unfixed). Close #17.
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(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))))
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(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)))
Center floating windows by default 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.
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(exwm--log "Floating geometry (original): %dx%d%+d%+d" width height x y)
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;; 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
Fix multi-screen bugs * RandR module is now made optional; users can enable it with `exwm-randr-enable`. * Correct the calculation of sizes/coordinates at various places. * Input focus is now tracked with (Emacs) window instead of buffer since the latter can be ambiguous in multi-screen settings.
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(let* ((display-width (frame-pixel-width original-frame))
(display-height (- (frame-pixel-height original-frame)
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(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)))
Fix window size calculations * When sending the synthetic ConfigureNotify event, make sure we are dealing with the correct Emacs window * When managing a floating window, ensure it can be easily pick up by the user
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;; Make sure at least half of the window is visible
(when (or (> (+ x (/ width 2)) display-width) (> 0 (+ x (/ width 2))))
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(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)))
Fix window size calculations * When sending the synthetic ConfigureNotify event, make sure we are dealing with the correct Emacs window * When managing a floating window, ensure it can be easily pick up by the user
2015-08-27 05:03:27 +02:00
;; Make sure at least half of the window is visible
(when (or (> (+ y (/ height 2)) display-height)
(> 0 (+ y (/ height 2))))
Center floating windows by default 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.
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(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)
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;; 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))
Provide hooks run when the floating state of a window changes (close #28)
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(select-window window))
(run-hooks 'exwm-floating-setup-hook))
First commit
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(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
Improve input focus switch mechanism This commit should fix most input focus bugs (especially those related to floating windows). The actual settings of input focus are delayed to exclude redundant event. Dead code since this commit is removed. This commit also fixes a bug for non-floating windows converted form floating state. The workaround for `ido-mode` is also improved to properly handle `exwm-mode` buffers.
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(setq window-size-fixed nil
exwm--floating-frame nil
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exwm--frame exwm-workspace--current))
Improve input focus switch mechanism This commit should fix most input focus bugs (especially those related to floating windows). The actual settings of input focus are delayed to exclude redundant event. Dead code since this commit is removed. This commit also fixes a bug for non-floating windows converted form floating state. The workaround for `ido-mode` is also improved to properly handle `exwm-mode` buffers.
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(let ((window (frame-selected-window exwm-workspace--current)))
(set-window-buffer window buffer)
Provide hooks run when the floating state of a window changes (close #28)
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(select-window window)))
(run-hooks 'exwm-floating-exit-hook))
First commit
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(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))))
Improve move/resize The type of move/resize is consistent during one complete operation. So there is no need to judge it on every mouse motion.
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(defvar exwm-floating--moveresize-calculate nil
"Calculate move/resize parameters [frame-id event-mask x y width height].")
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(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)
Improve move/resize The type of move/resize is consistent during one complete operation. So there is no need to judge it on every mouse motion.
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(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))))
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((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_TOPLEFT)
Improve move/resize The type of move/resize is consistent during one complete operation. So there is no need to judge it on every mouse motion.
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(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)))))
First commit
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((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_TOP)
Improve move/resize The type of move/resize is consistent during one complete operation. So there is no need to judge it on every mouse motion.
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(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)))))
First commit
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((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_TOPRIGHT)
Improve move/resize The type of move/resize is consistent during one complete operation. So there is no need to judge it on every mouse motion.
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(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)))))
First commit
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((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_RIGHT)
Improve move/resize The type of move/resize is consistent during one complete operation. So there is no need to judge it on every mouse motion.
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(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))))
First commit
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((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_BOTTOMRIGHT)
Improve move/resize The type of move/resize is consistent during one complete operation. So there is no need to judge it on every mouse motion.
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(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))))))
First commit
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((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_BOTTOM)
Improve move/resize The type of move/resize is consistent during one complete operation. So there is no need to judge it on every mouse motion.
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(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))))))
First commit
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((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_BOTTOMLEFT)
Improve move/resize The type of move/resize is consistent during one complete operation. So there is no need to judge it on every mouse motion.
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(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))))))
First commit
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((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_LEFT)
Improve move/resize The type of move/resize is consistent during one complete operation. So there is no need to judge it on every mouse motion.
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(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)))))
First commit
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;; 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
Improve move/resize The type of move/resize is consistent during one complete operation. So there is no need to judge it on every mouse motion.
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:time xcb:Time:CurrentTime)))))))
First commit
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(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)
Improve move/resize The type of move/resize is consistent during one complete operation. So there is no need to judge it on every mouse motion.
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(setq exwm-floating--moveresize-calculate nil))
First commit
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(defun exwm-floating--do-moveresize (data synthetic)
"Perform move/resize."
Improve move/resize The type of move/resize is consistent during one complete operation. So there is no need to judge it on every mouse motion.
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(when exwm-floating--moveresize-calculate
(let ((obj (make-instance 'xcb:MotionNotify))
Correct several EWMH properties The following EWMH properties on the root window are corrected in this commit: _NET_VIRTUAL_ROOTS, _NET_WORKAREA and _NET_DESKTOP_VIEWPORT.
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(geometry (frame-parameter exwm-workspace--current 'exwm-geometry))
(frame-x 0)
(frame-y 0)
Improve move/resize The type of move/resize is consistent during one complete operation. So there is no need to judge it on every mouse motion.
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result)
Correct several EWMH properties The following EWMH properties on the root window are corrected in this commit: _NET_VIRTUAL_ROOTS, _NET_WORKAREA and _NET_DESKTOP_VIEWPORT.
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(when geometry
(setq frame-x (slot-value geometry 'x)
frame-y (slot-value geometry 'y)))
First commit
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(xcb:unmarshal obj data)
Improve move/resize The type of move/resize is consistent during one complete operation. So there is no need to judge it on every mouse motion.
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(setq result (funcall exwm-floating--moveresize-calculate
(slot-value obj 'root-x) (slot-value obj 'root-y)))
First commit
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(xcb:+request exwm--connection
(make-instance 'xcb:ConfigureWindow
Improve move/resize The type of move/resize is consistent during one complete operation. So there is no need to judge it on every mouse motion.
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:window (elt result 0) :value-mask (elt result 1)
Fix multi-screen bugs * RandR module is now made optional; users can enable it with `exwm-randr-enable`. * Correct the calculation of sizes/coordinates at various places. * Input focus is now tracked with (Emacs) window instead of buffer since the latter can be ambiguous in multi-screen settings.
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:x (- (elt result 2) frame-x)
:y (- (elt result 3) frame-y)
Improve move/resize The type of move/resize is consistent during one complete operation. So there is no need to judge it on every mouse motion.
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:width (elt result 4) :height (elt result 5)))
First commit
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(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
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