src/cycling.c

   1 /* cycling.c- window cycling
   2  *
   3  *  Window Maker window manager
   4  *
   5  *  Copyright (c) 2000-2003 Alfredo K. Kojima
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  20  *  USA.
  21  */
  22
  23 #include "wconfig.h"
  24
  25 #include <X11/Xlib.h>
  26 #include <X11/Xutil.h>
  27 #include <X11/keysym.h>
  28
  29 #define MOX_CYCLING
  30
  31 #include "WindowMaker.h"
  32 #include "GNUstep.h"
  33 #include "screen.h"
  34 #include "wcore.h"
  35 #include "window.h"
  36 #include "framewin.h"
  37 #include "keybind.h"
  38 #include "actions.h"
  39 #include "stacking.h"
  40 #include "funcs.h"
  41 #include "xinerama.h"
  42 #include "switchpanel.h"
  43
  44 /* Globals */
  45 extern WPreferences wPreferences;
  46
  47 extern WShortKey wKeyBindings[WKBD_LAST];
  48
  49
  50
  51
  52
  53 #ifndef MOX_CYCLING
  54 static WWindow*
  55 nextToFocusAfter(WWindow *wwin)
  56 {
  57     WWindow *tmp = wwin->prev;
  58
  59     while (tmp) {
  60         if (wWindowCanReceiveFocus(tmp) && !WFLAGP(tmp, skip_window_list)) {
  61             return tmp;
  62         }
  63         tmp = tmp->prev;
  64     }
  65
  66     tmp = wwin;
  67     /* start over from the beginning of the list */
  68     while (tmp->next)
  69         tmp = tmp->next;
  70
  71     while (tmp && tmp != wwin) {
  72         if (wWindowCanReceiveFocus(tmp) && !WFLAGP(tmp, skip_window_list)) {
  73             return tmp;
  74         }
  75         tmp = tmp->prev;
  76     }
  77
  78     return wwin;
  79 }
  80
  81
  82 static WWindow*
  83 nextToFocusBefore(WWindow *wwin)
  84 {
  85     WWindow *tmp = wwin->next;
  86
  87     while (tmp) {
  88         if (wWindowCanReceiveFocus(tmp) && !WFLAGP(tmp, skip_window_list)) {
  89             return tmp;
  90         }
  91         tmp = tmp->next;
  92     }
  93
  94     /* start over from the beginning of the list */
  95     tmp = wwin;
  96     while (tmp->prev)
  97         tmp = tmp->prev;
  98
  99     while (tmp && tmp != wwin) {
 100         if (wWindowCanReceiveFocus(tmp) && !WFLAGP(tmp, skip_window_list)) {
 101
 102             return tmp;
 103         }
 104         tmp = tmp->next;
 105     }
 106
 107     return wwin;
 108 }
 109
 110
 111
 112
 113 static WWindow*
 114 nextFocusWindow(WWindow *wwin)
 115 {
 116     WWindow *tmp, *closest, *min;
 117     Window d;
 118
 119     if (!wwin)
 120         return NULL;
 121     tmp = wwin->prev;
 122     closest = NULL;
 123     min = wwin;
 124     d = 0xffffffff;
 125     while (tmp) {
 126         if (wWindowCanReceiveFocus(tmp)
 127             && (!WFLAGP(tmp, skip_window_list)|| tmp->flags.internal_window)) {
 128             if (min->client_win > tmp->client_win)
 129                 min = tmp;
 130             if (tmp->client_win > wwin->client_win
 131                 && (!closest
 132                     || (tmp->client_win - wwin->client_win) < d)) {
 133                 closest = tmp;
 134                 d = tmp->client_win - wwin->client_win;
 135             }
 136         }
 137         tmp = tmp->prev;
 138     }
 139     if (!closest||closest==wwin)
 140         return min;
 141     return closest;
 142 }
 143
 144
 145 static WWindow*
 146 prevFocusWindow(WWindow *wwin)
 147 {
 148     WWindow *tmp, *closest, *max;
 149     Window d;
 150
 151     if (!wwin)
 152         return NULL;
 153     tmp = wwin->prev;
 154     closest = NULL;
 155     max = wwin;
 156     d = 0xffffffff;
 157     while (tmp) {
 158         if (wWindowCanReceiveFocus(tmp) &&
 159             (!WFLAGP(tmp, skip_window_list) || tmp->flags.internal_window)) {
 160             if (max->client_win < tmp->client_win)
 161                 max = tmp;
 162             if (tmp->client_win < wwin->client_win
 163                 && (!closest
 164                     || (wwin->client_win - tmp->client_win) < d)) {
 165                 closest = tmp;
 166                 d = wwin->client_win - tmp->client_win;
 167             }
 168         }
 169         tmp = tmp->prev;
 170     }
 171     if (!closest||closest==wwin)
 172         return max;
 173     return closest;
 174 }
 175 #endif /* !MOX_CYCLING */
 176
 177
 178 void
 179 StartWindozeCycle(WWindow *wwin, XEvent *event, Bool next)
 180 {
 181     WScreen *scr = wScreenForRootWindow(event->xkey.root);
 182     Bool done = False;
 183     WWindow *newFocused;
 184     WWindow *oldFocused;
 185     int modifiers;
 186     XModifierKeymap *keymap = NULL;
 187     Bool hasModifier;
 188     Bool somethingElse = False;
 189     XEvent ev;
 190 #ifdef MOX_CYCLING
 191     WSwitchPanel *swpanel = NULL;
 192 #endif
 193     KeyCode leftKey, rightKey;
 194
 195     if (!wwin)
 196         return;
 197
 198     leftKey = XKeysymToKeycode(dpy, XK_Left);
 199     rightKey = XKeysymToKeycode(dpy, XK_Right);
 200
 201     if (next)
 202         hasModifier = (wKeyBindings[WKBD_FOCUSNEXT].modifier != 0);
 203     else
 204         hasModifier = (wKeyBindings[WKBD_FOCUSPREV].modifier != 0);
 205
 206     if (hasModifier) {
 207         keymap = XGetModifierMapping(dpy);
 208
 209 #ifdef DEBUG
 210         printf("Grabbing keyboard\n");
 211 #endif
 212         XGrabKeyboard(dpy, scr->root_win, False, GrabModeAsync, GrabModeAsync,
 213                       CurrentTime);
 214     }
 215
 216     scr->flags.doing_alt_tab = 1;
 217
 218 #ifdef MOX_CYCLING
 219     swpanel =  wInitSwitchPanel(scr, 0);
 220     oldFocused = wwin;
 221
 222     if (swpanel) {
 223         newFocused = wSwitchPanelSelectNext(swpanel, next);
 224         wWindowFocus(newFocused, oldFocused);
 225         oldFocused = newFocused;
 226     }
 227 #else /* !MOX_CYCLING */
 228     if (next) {
 229         if (wPreferences.windows_cycling)
 230             newFocused = nextToFocusAfter(wwin);
 231         else
 232             newFocused = nextFocusWindow(wwin);
 233     } else {
 234         if (wPreferences.windows_cycling)
 235             newFocused = nextToFocusBefore(wwin);
 236         else
 237             newFocused = prevFocusWindow(wwin);
 238     }
 239
 240     if (wPreferences.circ_raise)
 241         XRaiseWindow(dpy, newFocused->frame->core->window);
 242     wWindowFocus(newFocused, scr->focused_window);
 243     oldFocused = newFocused;
 244 #endif /* !MOX_CYCLING */
 245
 246     while (hasModifier && !done) {
 247         WMMaskEvent(dpy, KeyPressMask|KeyReleaseMask|ExposureMask|PointerMotionMask, &ev);
 248
 249         if (ev.type != KeyRelease && ev.type != KeyPress) {
 250             WMHandleEvent(&ev);
 251             continue;
 252         }
 253         /* ignore CapsLock */
 254         modifiers = ev.xkey.state & ValidModMask;
 255
 256         if (ev.type == KeyPress) {
 257 #ifdef DEBUG
 258             printf("Got key press\n");
 259 #endif
 260             if ((wKeyBindings[WKBD_FOCUSNEXT].keycode == ev.xkey.keycode
 261                 && wKeyBindings[WKBD_FOCUSNEXT].modifier == modifiers)
 262                 || ev.xkey.keycode == rightKey) {
 263
 264 #ifdef MOX_CYCLING
 265                 if (swpanel) {
 266                     newFocused = wSwitchPanelSelectNext(swpanel, False);
 267                     wWindowFocus(newFocused, oldFocused);
 268                     oldFocused = newFocused;
 269                 }
 270 #else /* !MOX_CYCLING */
 271                 newFocused = nextToFocusAfter(newFocused);
 272                 wWindowFocus(newFocused, oldFocused);
 273                 oldFocused = newFocused;
 274
 275                 if (wPreferences.circ_raise) {
 276                     /* restore order */
 277                     CommitStacking(scr);
 278                     XRaiseWindow(dpy, newFocused->frame->core->window);
 279                 }
 280 #endif /* !MOX_CYCLING */
 281             } else if ((wKeyBindings[WKBD_FOCUSPREV].keycode == ev.xkey.keycode
 282                         && wKeyBindings[WKBD_FOCUSPREV].modifier == modifiers)
 283                        || ev.xkey.keycode == leftKey) {
 284
 285 #ifdef MOX_CYCLING
 286                 if (swpanel) {
 287                     newFocused = wSwitchPanelSelectNext(swpanel, True);
 288                     wWindowFocus(newFocused, oldFocused);
 289                     oldFocused = newFocused;
 290                 }
 291 #else /* !MOX_CYCLING */
 292                 newFocused = nextToFocusBefore(newFocused);
 293                 wWindowFocus(newFocused, oldFocused);
 294                 oldFocused = newFocused;
 295
 296                 if (wPreferences.circ_raise) {
 297                     /* restore order */
 298                     CommitStacking(scr);
 299                     XRaiseWindow(dpy, newFocused->frame->core->window);
 300                 }
 301 #endif /* !MOX_CYCLING */
 302             } else if (ev.type == MotionNotify) {
 303                 WWindow *tmp;
 304                 if (swpanel) {
 305                     tmp = wSwitchPanelHandleEvent(swpanel, &ev);
 306                     if (tmp) {
 307                         newFocused = tmp;
 308                         wWindowFocus(newFocused, oldFocused);
 309                         oldFocused = newFocused;
 310                     }
 311                 }
 312             } else {
 313 #ifdef DEBUG
 314                 printf("Got something else\n");
 315 #endif
 316                 somethingElse = True;
 317                 done = True;
 318             }
 319         } else if (ev.type == KeyRelease) {
 320             int i;
 321
 322 #ifdef DEBUG
 323             printf("Got key release\n");
 324 #endif
 325             for (i = 0; i < 8 * keymap->max_keypermod; i++) {
 326                 if (keymap->modifiermap[i] == ev.xkey.keycode &&
 327                     wKeyBindings[WKBD_FOCUSNEXT].modifier
 328                     & 1<<(i/keymap->max_keypermod)) {
 329                     done = True;
 330                     break;
 331                 }
 332             }
 333         }
 334     }
 335     if (keymap)
 336         XFreeModifiermap(keymap);
 337
 338     if (hasModifier) {
 339 #ifdef DEBUG
 340         printf("Ungrabbing keyboard\n");
 341 #endif
 342         XUngrabKeyboard(dpy, CurrentTime);
 343     }
 344     wSetFocusTo(scr, newFocused);
 345
 346 #ifdef MOX_CYCLING
 347     if (swpanel)
 348         wSwitchPanelDestroy(swpanel);
 349 #endif
 350
 351     if (wPreferences.circ_raise && newFocused) {
 352         wRaiseFrame(newFocused->frame->core);
 353         CommitStacking(scr);
 354     }
 355
 356     scr->flags.doing_alt_tab = 0;
 357
 358     if (somethingElse) {
 359         WMHandleEvent(&ev);
 360     }
 361 }
 362
 363