src/clfswm-expose-mode.lisp

   1 ;;; --------------------------------------------------------------------------
   2 ;;; CLFSWM - FullScreen Window Manager
   3 ;;;
   4 ;;; --------------------------------------------------------------------------
   5 ;;; Documentation: Expose functions - An expose like.
   6 ;;; --------------------------------------------------------------------------
   7 ;;;
   8 ;;; (C) 2012 Philippe Brochard <pbrochard@common-lisp.net>
   9 ;;;
  10 ;;; This program is free software; you can redistribute it and/or modify
  11 ;;; it under the terms of the GNU General Public License as published by
  12 ;;; the Free Software Foundation; either version 3 of the License, or
  13 ;;; (at your option) any later version.
  14 ;;;
  15 ;;; This program is distributed in the hope that it will be useful,
  16 ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 ;;; GNU General Public License for more details.
  19 ;;;
  20 ;;; You should have received a copy of the GNU General Public License
  21 ;;; along with this program; if not, write to the Free Software
  22 ;;; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  23 ;;;
  24 ;;; --------------------------------------------------------------------------
  25
  26 (in-package :clfswm)
  27
  28 (defparameter *expose-font* nil)
  29 (defparameter *expose-windows-list* nil)
  30 (defparameter *expose-selected-child* nil)
  31
  32 (defun leave-expose-mode ()
  33   "Leave the expose mode"
  34   (throw 'exit-expose-loop nil))
  35
  36 (defun valid-expose-mode ()
  37   "Valid the expose mode"
  38   (throw 'exit-expose-loop t))
  39
  40 (defun mouse-leave-expose-mode (window root-x root-y)
  41   "Leave the expose mode"
  42   (declare (ignore window root-x root-y))
  43   (throw 'exit-expose-loop nil))
  44
  45 (defun mouse-valid-expose-mode (window root-x root-y)
  46   "Valid the expose mode"
  47   (declare (ignore window root-x root-y))
  48   (throw 'exit-expose-loop t))
  49
  50
  51 (defun expose-draw-letter ()
  52   (dolist (lwin *expose-windows-list*)
  53     (destructuring-bind (window gc string child letter) lwin
  54       (declare (ignore child))
  55       (clear-pixmap-buffer window gc)
  56       (xlib:with-gcontext (gc :foreground (get-color (if (substring-equal *query-string* letter)
  57                                                          *expose-foreground-letter*
  58                                                          *expose-foreground-letter-nok*))
  59                               :background (get-color (if (string-equal *query-string* letter)
  60                                                          *expose-background-letter-match*
  61                                                          *expose-background*)))
  62         (xlib:draw-image-glyphs *pixmap-buffer* gc
  63                                 (xlib:max-char-width *expose-font*)
  64                                 (+ (xlib:font-ascent *expose-font*) (xlib:font-descent *expose-font*))
  65                                 letter))
  66       (xlib:draw-glyphs *pixmap-buffer* gc
  67                         (xlib:max-char-width *expose-font*)
  68                         (+ (* 2 (xlib:font-ascent *expose-font*)) (xlib:font-descent *expose-font*) 1)
  69                         string)
  70       (copy-pixmap-buffer window gc))))
  71
  72 (defun expose-create-window (child n)
  73   (with-current-child (child)
  74     (let* ((string (format nil "~A"
  75                            (if *expose-show-window-title*
  76                                (ensure-printable (child-fullname child))
  77                                "")))
  78            (width (if *expose-show-window-title*
  79                       (min (* (xlib:max-char-width *expose-font*) (+ (length string) 2))
  80                            (- (child-width child) 4))
  81                       (* (xlib:max-char-width *expose-font*) 3)))
  82            (height (* (xlib:font-ascent *expose-font*) 3)))
  83       (with-placement (*expose-mode-placement* x y width height)
  84         (let* ((window (xlib:create-window :parent *root*
  85                                            :x x   :y y
  86                                            :width width   :height height
  87                                            :background (get-color *expose-background*)
  88                                            :border-width *border-size*
  89                                            :border (get-color *expose-border*)
  90                                            :colormap (xlib:screen-default-colormap *screen*)
  91                                            :event-mask '(:exposure :key-press)))
  92                (gc (xlib:create-gcontext :drawable window
  93                                          :foreground (get-color *expose-foreground*)
  94                                          :background (get-color *expose-background*)
  95                                          :font *expose-font*
  96                                          :line-style :solid)))
  97           (setf (window-transparency window) *expose-transparency*)
  98           (map-window window)
  99           (push (list window gc string child (number->letter n)) *expose-windows-list*))))))
 100
 101
 102
 103
 104 (defun expose-query-key-press-hook (code state)
 105   (declare (ignore code state))
 106   (expose-draw-letter))
 107
 108 (defun expose-query-button-press-hook (code state x y)
 109   (declare (ignore state))
 110   (when (= code 1)
 111     (setf *expose-selected-child* (find-child-under-mouse x y)))
 112   (leave-query-mode :click))
 113
 114
 115 (defun expose-init ()
 116   (setf *expose-font* (xlib:open-font *display* *expose-font-string*)
 117         *expose-windows-list* nil
 118         *expose-selected-child* nil
 119         *query-string* "")
 120   (xlib:warp-pointer *root* (truncate (/ (xlib:screen-width *screen*) 2))
 121                      (truncate (/ (xlib:screen-height *screen*) 2)))
 122   (add-hook *query-key-press-hook* 'expose-query-key-press-hook)
 123   (add-hook *query-button-press-hook* 'expose-query-button-press-hook))
 124
 125 (defun expose-present-windows ()
 126   (dolist (root (all-root-child))
 127     (with-all-frames (root frame)
 128       (setf (frame-data-slot frame :old-layout) (frame-layout frame)
 129             (frame-layout frame) #'tile-space-layout)))
 130   (show-all-children t))
 131
 132 (defun expose-mode-display-accel-windows ()
 133   (let ((n -1))
 134     (dolist (root (nreverse (all-root-child)))
 135       (with-all-children-reversed (root child)
 136         (if (or (frame-p child)
 137                 (managed-window-p child (find-parent-frame child *root-frame*)))
 138             (expose-create-window child (incf n))
 139             (hide-child child))))
 140     (setf *expose-windows-list* (nreverse *expose-windows-list*))
 141     (expose-draw-letter)))
 142
 143 (defun expose-find-child-from-letters (letters)
 144   (fourth (find letters *expose-windows-list* :test #'string-equal :key #'fifth)))
 145
 146 (defun expose-select-child ()
 147   (let ((*query-mode-placement* *expose-query-placement*))
 148     (multiple-value-bind (letters return)
 149         (query-string "Which child ?")
 150       (let ((child (case return
 151                      (:return (expose-find-child-from-letters letters))
 152                      (:click *expose-selected-child*))))
 153         (when (find-child-in-all-root child)
 154           child)))))
 155
 156 (defun expose-restore-windows ()
 157   (remove-hook *query-key-press-hook* 'expose-query-key-press-hook)
 158   (remove-hook *query-button-press-hook* 'expose-query-button-press-hook)
 159   (dolist (lwin *expose-windows-list*)
 160     (awhen (first lwin)
 161       (xlib:destroy-window it))
 162     (awhen (second lwin)
 163       (xlib:free-gcontext it)))
 164   (when *expose-font*
 165     (xlib:close-font *expose-font*))
 166   (setf *expose-windows-list* nil)
 167   (dolist (root (all-root-child))
 168     (with-all-frames (root frame)
 169       (setf (frame-layout frame) (frame-data-slot frame :old-layout)
 170             (frame-data-slot frame :old-layout) nil))))
 171
 172 (defun expose-focus-child (child)
 173   (let ((parent (typecase child
 174                   (xlib:window (find-parent-frame child))
 175                   (frame child))))
 176     (when (and child parent)
 177       (change-root (find-root parent) parent)
 178       (setf (current-child) child)
 179       (focus-all-children child parent t))))
 180
 181 (defun expose-do-main ()
 182   (stop-button-event)
 183   (expose-init)
 184   (expose-present-windows)
 185   (expose-mode-display-accel-windows)
 186   (let ((child (expose-select-child)))
 187     (expose-restore-windows)
 188     child))
 189
 190 (defun expose-windows-mode ()
 191   "Present all windows in currents roots (An expose like)"
 192   (awhen (expose-do-main)
 193     (expose-focus-child it))
 194   (show-all-children)
 195   t)
 196
 197
 198 (defun expose-all-windows-mode ()
 199   "Present all windows in all frames (An expose like)"
 200   (let ((child nil))
 201     (with-saved-root-list ()
 202       (dolist (root (get-root-list))
 203         (change-root root (root-original root)))
 204       (setf child (expose-do-main)))
 205     (when child
 206       (expose-focus-child child)))
 207   (show-all-children)
 208   t)
 209
 210
 211