mirror of
https://github.com/ch11ng/exwm.git
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eafd031c55
* exwm-core.el: new buffer-local variable exwm--floating-mode-line-format for saving mode-line-format when mode-line is hidden * exwm-floating.el (exwm-floating--fit-frame-to-window) (exwm-floating-hide-mode-line, exwm-floating-show-mode-line): new functions for resizing frames, hiding/showing mode-line respectively; (exwm-floating--set-floating): use exwm-floating--fit-frame-to-window to resize frames
492 lines
23 KiB
EmacsLisp
492 lines
23 KiB
EmacsLisp
;;; exwm-floating.el --- Floating Module for EXWM -*- lexical-binding: t -*-
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;; Copyright (C) 2015 Free Software Foundation, Inc.
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;; Author: Chris Feng <chris.w.feng@gmail.com>
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;; This file is part of GNU Emacs.
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;; GNU Emacs 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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;; GNU Emacs 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 GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;; This module deals with the conversion between floating and non-floating
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;; states and implements moving/resizing operations on floating windows.
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;; Todo:
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;; + move/resize with keyboard.
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;;; Code:
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(require 'xcb-cursor)
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(require 'exwm-core)
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(eval-when-compile (require 'exwm-workspace))
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(defvar exwm-floating-border-width 1 "Border width of the floating window.")
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(defvar exwm-floating-border-color "blue"
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"Border color of the floating window.")
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(defvar exwm-floating-setup-hook nil
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"Normal hook run when a window has been made floating.")
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(defvar exwm-floating-exit-hook nil
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"Normal hook run when a window has exited floating state.")
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;; Cursors for moving/resizing a window
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(defvar exwm-floating--cursor-move nil)
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(defvar exwm-floating--cursor-top-left nil)
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(defvar exwm-floating--cursor-top nil)
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(defvar exwm-floating--cursor-top-right nil)
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(defvar exwm-floating--cursor-right nil)
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(defvar exwm-floating--cursor-bottom-right nil)
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(defvar exwm-floating--cursor-bottom nil)
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(defvar exwm-floating--cursor-bottom-left nil)
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(defvar exwm-floating--cursor-left nil)
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;;;###autoload
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(defun exwm-floating--set-floating (id)
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"Make window ID floating."
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(interactive)
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(let ((window (get-buffer-window (exwm--id->buffer id))))
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(when window ;window in non-floating state
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(set-window-buffer window (other-buffer)))) ;hide it first
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(let* ((original-frame
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(with-current-buffer (exwm--id->buffer id)
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(if (and exwm-transient-for (exwm--id->buffer exwm-transient-for))
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;; Place a modal in the same workspace with its leading window
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(with-current-buffer (exwm--id->buffer exwm-transient-for)
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exwm--frame)
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;; Fallback to current workspace
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exwm-workspace--current)))
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(original-id (frame-parameter original-frame 'exwm-window-id))
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;; Create new frame
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(frame (with-current-buffer "*scratch*"
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(prog2
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(exwm--lock)
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(make-frame
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`((minibuffer . nil) ;use the one on workspace
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(background-color . ,exwm-floating-border-color)
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(internal-border-width . ,exwm-floating-border-width)
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(unsplittable . t))) ;and fix the size later
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(exwm--unlock))))
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(frame-id (string-to-number (frame-parameter frame 'window-id)))
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(outer-id (string-to-number (frame-parameter frame 'outer-window-id)))
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(window (frame-first-window frame)) ;and it's the only window
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(x (slot-value exwm--geometry 'x))
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(y (slot-value exwm--geometry 'y))
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(width (slot-value exwm--geometry 'width))
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(height (slot-value exwm--geometry 'height)))
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(exwm--log "Floating geometry (original): %dx%d%+d%+d" width height x y)
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;; Save window IDs
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(set-frame-parameter frame 'exwm-window-id frame-id)
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(set-frame-parameter frame 'exwm-outer-id outer-id)
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;; Set urgency flag if it's not appear in the active workspace
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(let ((idx (cl-position original-frame exwm-workspace--list)))
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(when (/= idx exwm-workspace-current-index)
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(set-frame-parameter original-frame 'exwm--urgency t)
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(exwm-workspace--update-switch-history)))
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;; Fix illegal parameters
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;; FIXME: check normal hints restrictions
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(let* ((display-width (frame-pixel-width original-frame))
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(display-height (- (frame-pixel-height original-frame)
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(window-pixel-height (minibuffer-window
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original-frame))
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(* 2 (window-mode-line-height))
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(window-header-line-height window)
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(* 2 exwm-floating-border-width)))
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(display-height (* 2 (/ display-height 2)))) ;round to even
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(if (> width display-width)
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;; Too wide
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(progn (setq x 0
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width display-width))
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;; Invalid width
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(when (= 0 width) (setq width (/ display-width 2)))
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;; Make sure at least half of the window is visible
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(when (or (> (+ x (/ width 2)) display-width) (> 0 (+ x (/ width 2))))
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(setq x (/ (- display-width width) 2))))
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(if (> height display-height)
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;; Too tall
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(setq y 0
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height display-height)
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;; Invalid height
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(when (= 0 height) (setq height (/ display-height 2)))
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;; Make sure at least half of the window is visible
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(when (or (> (+ y (/ height 2)) display-height)
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(> 0 (+ y (/ height 2))))
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(setq y (/ (- display-height height) 2))))
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;; Center floating windows
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(when (and (= x 0) (= y 0))
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(let ((buffer (exwm--id->buffer exwm-transient-for))
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window edges)
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(when (and buffer (setq window (get-buffer-window buffer)))
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(setq edges (window-inside-absolute-pixel-edges window))
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(unless (and (<= width (- (elt edges 2) (elt edges 0)))
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(<= height (- (elt edges 3) (elt edges 1))))
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(setq edges nil)))
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(if edges
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;; Put at the center of leading window
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(setq x (/ (- (+ (elt edges 2) (elt edges 0)) width) 2)
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y (/ (- (+ (elt edges 3) (elt edges 1)) height) 2))
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;; Put at the center of screen
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(setq x (/ (- display-width width) 2)
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y (/ (- display-height height) 2))))))
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(exwm--log "Floating geometry (corrected): %dx%d%+d%+d" width height x y)
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;; Set OverrideRedirect on this frame
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(xcb:+request exwm--connection
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(make-instance 'xcb:ChangeWindowAttributes
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:window outer-id :value-mask xcb:CW:OverrideRedirect
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:override-redirect 1))
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;; Set event mask
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(xcb:+request exwm--connection
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(make-instance 'xcb:ChangeWindowAttributes
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:window frame-id :value-mask xcb:CW:EventMask
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:event-mask xcb:EventMask:SubstructureRedirect))
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;; Reparent this frame to the original one
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(xcb:+request exwm--connection
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(make-instance 'xcb:ReparentWindow
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:window outer-id :parent original-id
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:x (- x exwm-floating-border-width)
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:y (- y exwm-floating-border-width)))
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;; Save the geometry
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;; Rationale: the frame will not be ready for some time, thus we cannot
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;; infer the correct window size from its geometry.
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(with-current-buffer (exwm--id->buffer id)
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(setq exwm--floating-edges
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(vector exwm-floating-border-width exwm-floating-border-width
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(+ width exwm-floating-border-width)
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(+ height exwm-floating-border-width))))
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;; Fit frame to client
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(exwm-floating--fit-frame-to-window outer-id width height)
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;; Reparent window to this frame
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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
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(make-instance 'xcb:ReparentWindow
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:window id :parent frame-id
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:x exwm-floating-border-width
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:y exwm-floating-border-width))
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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:flush exwm--connection)
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;; Set window/buffer
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(with-current-buffer (exwm--id->buffer id)
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(setq window-size-fixed t ;make frame fixed size
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exwm--frame original-frame
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exwm--floating-frame frame)
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(set-window-buffer window (current-buffer)) ;this changes current buffer
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(set-window-dedicated-p window t))
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(select-window window))
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(run-hooks 'exwm-floating-setup-hook))
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;;;###autoload
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(defun exwm-floating--unset-floating (id)
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"Make window ID non-floating."
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(interactive)
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(let ((buffer (exwm--id->buffer id)))
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;; Reparent to workspace frame
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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
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(make-instance 'xcb:ReparentWindow
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:window id
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:parent (frame-parameter exwm-workspace--current
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'exwm-window-id)
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:x 0 :y 0)) ;temporary position
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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:flush exwm--connection)
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(with-current-buffer buffer
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(when exwm--floating-frame ;from floating to non-floating
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(setq exwm--floating-edges nil) ;invalid by now
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(set-window-dedicated-p (frame-first-window exwm--floating-frame) nil)
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(delete-frame exwm--floating-frame))) ;remove the floating frame
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(with-current-buffer buffer
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(setq window-size-fixed nil
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exwm--floating-frame nil
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exwm--frame exwm-workspace--current))
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(let ((window (frame-selected-window exwm-workspace--current)))
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(set-window-buffer window buffer)
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(select-window window)))
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(run-hooks 'exwm-floating-exit-hook))
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;;;###autoload
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(defun exwm-floating-toggle-floating ()
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"Toggle the current window between floating and non-floating states."
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(interactive)
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(with-current-buffer (window-buffer)
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(if exwm--floating-frame
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(exwm-floating--unset-floating exwm--id)
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(exwm-floating--set-floating exwm--id))))
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(defun exwm-floating--fit-frame-to-window (&optional frame-outer-id
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width height)
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"Resize a floating frame to make it fit the size of the window.
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Default to resize `exwm--floating-frame' unless FRAME-OUTER-ID is non-nil.
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This function will issue an `xcb:GetGeometry' request unless WIDTH and HEIGHT
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are provided. You should call `xcb:flush' and assign `window-size-fixed' a
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non-nil value afterwards."
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(setq window-size-fixed nil)
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(unless (and width height)
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(let ((geometry (xcb:+request-unchecked+reply exwm--connection
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(make-instance 'xcb:GetGeometry :drawable exwm--id))))
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(setq width (slot-value geometry 'width)
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height (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 (or frame-outer-id
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(frame-parameter exwm--floating-frame
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'exwm-outer-id))
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:value-mask (logior xcb:ConfigWindow:Width
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xcb:ConfigWindow:Height
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xcb:ConfigWindow:StackMode)
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:width (+ width (* 2 exwm-floating-border-width))
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:height (+ height (* 2 exwm-floating-border-width)
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(window-mode-line-height)
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(window-header-line-height))
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:stack-mode xcb:StackMode:Above))) ;top-most
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(defun exwm-floating-hide-mode-line ()
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"Hide mode-line of a floating frame."
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(interactive)
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(unless (eq major-mode 'exwm-mode)
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(user-error "[EXWM] Please use this command with EXWM buffers"))
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(when (and exwm--floating-frame mode-line-format)
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(setq exwm--floating-mode-line-format mode-line-format
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mode-line-format nil)
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(exwm-floating--fit-frame-to-window)
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(xcb:flush exwm--connection)
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(setq window-size-fixed t)))
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(defun exwm-floating-show-mode-line ()
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"Show mode-line of a floating frame."
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(interactive)
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(unless (eq major-mode 'exwm-mode)
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(user-error "[EXWM] Please use this command with EXWM buffers"))
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(when (and exwm--floating-frame (not mode-line-format))
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(setq mode-line-format exwm--floating-mode-line-format
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exwm--floating-mode-line-format nil)
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(exwm-floating--fit-frame-to-window)
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(exwm-input-grab-keyboard) ;mode-line-format may be outdated
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(xcb:flush exwm--connection)
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(setq window-size-fixed t)))
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(defvar exwm-floating--moveresize-calculate nil
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"Calculate move/resize parameters [frame-id event-mask x y width height].")
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;;;###autoload
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(defun exwm-floating--start-moveresize (id &optional type)
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"Start move/resize."
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(let ((buffer (exwm--id->buffer id))
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frame frame-id x y width height cursor)
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(when (and buffer
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(setq frame (with-current-buffer buffer exwm--floating-frame))
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(setq frame-id (frame-parameter frame 'exwm-outer-id))
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;; Test if the pointer can be grabbed
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(= xcb:GrabStatus:Success
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(slot-value
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(xcb:+request-unchecked+reply exwm--connection
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(make-instance 'xcb:GrabPointer
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:owner-events 0 :grab-window frame-id
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:event-mask xcb:EventMask:NoEvent
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:pointer-mode xcb:GrabMode:Async
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:keyboard-mode xcb:GrabMode:Async
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:confine-to xcb:Window:None
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:cursor xcb:Cursor:None
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:time xcb:Time:CurrentTime))
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'status)))
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(setq exwm--floating-edges nil) ;invalid by now
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(with-slots (root-x root-y win-x win-y)
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(xcb:+request-unchecked+reply exwm--connection
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(make-instance 'xcb:QueryPointer :window id))
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(select-frame-set-input-focus frame) ;raise and focus it
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(setq width (frame-pixel-width frame)
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height (frame-pixel-height frame))
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(unless type
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;; Determine the resize type according to the pointer position
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;; Clicking the center 1/3 part to resize has not effect
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(setq x (/ (* 3 win-x) (float width))
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y (/ (* 3 win-y) (float height))
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type (cond ((and (< x 1) (< y 1))
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xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_TOPLEFT)
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((and (> x 2) (< y 1))
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xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_TOPRIGHT)
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((and (> x 2) (> y 2))
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xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_BOTTOMRIGHT)
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((and (< x 1) (> y 2))
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xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_BOTTOMLEFT)
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((< y 1) xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_TOP)
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((> x 2) xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_RIGHT)
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((> y 2) xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_BOTTOM)
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((< x 1) xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_LEFT))))
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(if (not type)
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(exwm-floating--stop-moveresize)
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(cond ((= type xcb:ewmh:_NET_WM_MOVERESIZE_MOVE)
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(setq cursor exwm-floating--cursor-move
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exwm-floating--moveresize-calculate
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`(lambda (x y)
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(vector ,frame-id
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,(logior xcb:ConfigWindow:X
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xcb:ConfigWindow:Y)
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(- x ,win-x) (- y ,win-y) 0 0))))
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((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_TOPLEFT)
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(setq cursor exwm-floating--cursor-top-left
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exwm-floating--moveresize-calculate
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`(lambda (x y)
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(vector ,frame-id
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,(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 ,win-x) (- y ,win-y)
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(- ,(+ root-x width) x)
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(- ,(+ root-y height) y)))))
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((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_TOP)
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(setq cursor exwm-floating--cursor-top
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exwm-floating--moveresize-calculate
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`(lambda (x y)
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(vector ,frame-id
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,(logior xcb:ConfigWindow:Y
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xcb:ConfigWindow:Height)
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0 (- y ,win-y) 0 (- ,(+ root-y height) y)))))
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((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_TOPRIGHT)
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(setq cursor exwm-floating--cursor-top-right
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exwm-floating--moveresize-calculate
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`(lambda (x y)
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(vector ,frame-id
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,(logior xcb:ConfigWindow:Y
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xcb:ConfigWindow:Width
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xcb:ConfigWindow:Height)
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0 (- y ,win-y) (- x ,(- root-x width))
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(- ,(+ root-y height) y)))))
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((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_RIGHT)
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(setq cursor exwm-floating--cursor-right
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exwm-floating--moveresize-calculate
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`(lambda (x y)
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(vector ,frame-id ,xcb:ConfigWindow:Width
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0 0 (- x ,(- root-x width)) 0))))
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((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_BOTTOMRIGHT)
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(setq cursor exwm-floating--cursor-bottom-right
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exwm-floating--moveresize-calculate
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`(lambda (x y)
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(vector ,frame-id
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,(logior xcb:ConfigWindow:Width
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xcb:ConfigWindow:Height)
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0 0 (- x ,(- root-x width))
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(- y ,(- root-y height))))))
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((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_BOTTOM)
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(setq cursor exwm-floating--cursor-bottom
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exwm-floating--moveresize-calculate
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`(lambda (x y)
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(vector ,frame-id
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,xcb:ConfigWindow:Height
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0 0 0 (- y ,(- root-y height))))))
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((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_BOTTOMLEFT)
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(setq cursor exwm-floating--cursor-bottom-left
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exwm-floating--moveresize-calculate
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`(lambda (x y)
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(vector ,frame-id
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,(logior xcb:ConfigWindow:X
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xcb:ConfigWindow:Width
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xcb:ConfigWindow:Height)
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(- x ,win-x)
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0
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(- ,(+ root-x width) x)
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(- 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)))))))
|
||
|
||
;;;###autoload
|
||
(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))
|
||
|
||
;;;###autoload
|
||
(defun exwm-floating--do-moveresize (data _synthetic)
|
||
"Perform move/resize."
|
||
(when exwm-floating--moveresize-calculate
|
||
(let ((obj (make-instance 'xcb:MotionNotify))
|
||
(geometry (frame-parameter exwm-workspace--current 'exwm-geometry))
|
||
(frame-x 0)
|
||
(frame-y 0)
|
||
result)
|
||
(when geometry
|
||
(setq frame-x (slot-value geometry 'x)
|
||
frame-y (slot-value geometry 'y)))
|
||
(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) frame-x)
|
||
:y (- (elt result 3) frame-y)
|
||
:width (elt result 4) :height (elt result 5)))
|
||
(xcb:flush exwm--connection))))
|
||
|
||
(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
|