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 <stdlib.h>
  26 #include <X11/Xlib.h>
  27 #include <X11/Xutil.h>
  28 #include <X11/keysym.h>
  29
  30 #include "WindowMaker.h"
  31 #include "GNUstep.h"
  32 #include "screen.h"
  33 #include "window.h"
  34 #include "framewin.h"
  35 #include "keybind.h"
  36 #include "actions.h"
  37 #include "stacking.h"
  38 #include "funcs.h"
  39 #include "xinerama.h"
  40 #include "switchpanel.h"
  41
  42 /* Globals */
  43 extern WPreferences wPreferences;
  44
  45 extern WShortKey wKeyBindings[WKBD_LAST];
  46
  47 static void raiseWindow(WSwitchPanel * swpanel, WWindow * wwin)
  48 {
  49         Window swwin = wSwitchPanelGetWindow(swpanel);
  50
  51         if (wwin->flags.mapped) {
  52                 if (swwin != None) {
  53                         Window win[2];
  54
  55                         win[0] = swwin;
  56                         win[1] = wwin->frame->core->window;
  57
  58                         XRestackWindows(dpy, win, 2);
  59                 } else
  60                         XRaiseWindow(dpy, wwin->frame->core->window);
  61         }
  62 }
  63
  64 static WWindow *change_focus_and_raise(WWindow *newFocused, WWindow *oldFocused,
  65                                        WSwitchPanel *swpanel, WScreen *scr, Bool esc_cancel)
  66 {
  67         if (!newFocused)
  68                 return oldFocused;
  69
  70         wWindowFocus(newFocused, oldFocused);
  71         oldFocused = newFocused;
  72
  73         if (wPreferences.circ_raise) {
  74                 CommitStacking(scr);
  75
  76                 if (!esc_cancel)
  77                         raiseWindow(swpanel, newFocused);
  78         }
  79
  80         return oldFocused;
  81 }
  82
  83 void StartWindozeCycle(WWindow * wwin, XEvent * event, Bool next, Bool class_only)
  84 {
  85
  86         XModifierKeymap *keymap        = NULL;
  87         WSwitchPanel    *swpanel       = NULL;
  88         WScreen         *scr           = wScreenForRootWindow(event->xkey.root);
  89         KeyCode         leftKey        = XKeysymToKeycode(dpy, XK_Left);
  90         KeyCode         rightKey       = XKeysymToKeycode(dpy, XK_Right);
  91         KeyCode         homeKey        = XKeysymToKeycode(dpy, XK_Home);
  92         KeyCode         endKey         = XKeysymToKeycode(dpy, XK_End);
  93         KeyCode         shiftLKey      = XKeysymToKeycode(dpy, XK_Shift_L);
  94         KeyCode         shiftRKey      = XKeysymToKeycode(dpy, XK_Shift_R);
  95         KeyCode         escapeKey      = XKeysymToKeycode(dpy, XK_Escape);
  96         Bool            esc_cancel     = False;
  97         Bool            somethingElse  = False;
  98         Bool            done           = False;
  99         Bool            hasModifier;
 100         int             modifiers;
 101         WWindow         *newFocused;
 102         WWindow         *oldFocused;
 103         XEvent          ev;
 104
 105
 106         if (!wwin)
 107                 return;
 108
 109         if (next)
 110                 hasModifier = (wKeyBindings[WKBD_FOCUSNEXT].modifier != 0);
 111         else
 112                 hasModifier = (wKeyBindings[WKBD_FOCUSPREV].modifier != 0);
 113
 114         if (hasModifier) {
 115                 keymap = XGetModifierMapping(dpy);
 116
 117 #ifdef DEBUG
 118                 printf("Grabbing keyboard\n");
 119 #endif
 120                 XGrabKeyboard(dpy, scr->root_win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
 121         }
 122
 123         scr->flags.doing_alt_tab = 1;
 124
 125         swpanel = wInitSwitchPanel(scr, wwin, class_only);
 126         oldFocused = wwin;
 127
 128         if (swpanel) {
 129
 130                 if (wwin->flags.mapped)
 131                         newFocused = wSwitchPanelSelectNext(swpanel, !next);
 132                 else
 133                         newFocused = wSwitchPanelSelectFirst(swpanel, False);
 134
 135                 oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr, False);
 136         } else {
 137                 if (wwin->frame->workspace == scr->current_workspace)
 138                         newFocused = wwin;
 139                 else
 140                         newFocused = NULL;
 141         }
 142
 143         while (hasModifier && !done) {
 144                 int i;
 145
 146                 WMMaskEvent(dpy, KeyPressMask | KeyReleaseMask | ExposureMask
 147                             | PointerMotionMask | ButtonReleaseMask | EnterWindowMask, &ev);
 148
 149                 /* ignore CapsLock */
 150                 modifiers = ev.xkey.state & ValidModMask;
 151
 152                 if (!swpanel)
 153                         done = True;
 154
 155                 switch (ev.type) {
 156
 157                 case KeyPress:
 158
 159                         if ((wKeyBindings[WKBD_FOCUSNEXT].keycode == ev.xkey.keycode
 160                              && wKeyBindings[WKBD_FOCUSNEXT].modifier == modifiers)
 161                             || (wKeyBindings[WKBD_GROUPNEXT].keycode == ev.xkey.keycode
 162                             && wKeyBindings[WKBD_GROUPNEXT].modifier == modifiers)
 163                             || ev.xkey.keycode == rightKey) {
 164
 165                                 newFocused = wSwitchPanelSelectNext(swpanel, False);
 166                                 oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr, False);
 167
 168                         } else if ((wKeyBindings[WKBD_FOCUSPREV].keycode == ev.xkey.keycode
 169                                     && wKeyBindings[WKBD_FOCUSPREV].modifier == modifiers)
 170                             || (wKeyBindings[WKBD_GROUPPREV].keycode == ev.xkey.keycode
 171                             && wKeyBindings[WKBD_GROUPPREV].modifier == modifiers)
 172                                    || ev.xkey.keycode == leftKey) {
 173
 174                                 newFocused = wSwitchPanelSelectNext(swpanel, True);
 175                                 oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr, False);
 176
 177                         } else if (ev.xkey.keycode == homeKey || ev.xkey.keycode == endKey) {
 178
 179                                 newFocused = wSwitchPanelSelectFirst(swpanel, ev.xkey.keycode != homeKey);
 180                                 oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr, False);
 181
 182                         } else if (ev.xkey.keycode == escapeKey) {
 183
 184                                 /* Focus the first window of the swpanel, despite the 'False' */
 185                                 newFocused = wSwitchPanelSelectFirst(swpanel, False);
 186                                 oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr, True);
 187                                 esc_cancel = True;
 188                                 done = True;
 189
 190                         } else if (ev.xkey.keycode != shiftLKey && ev.xkey.keycode != shiftRKey) {
 191
 192                                 somethingElse = True;
 193                                 done = True;
 194                         }
 195                         break;
 196
 197                 case KeyRelease:
 198
 199                         for (i = 0; i < 8 * keymap->max_keypermod; i++) {
 200
 201                                 int mask = 1 << (i / keymap->max_keypermod);
 202
 203                                 if (keymap->modifiermap[i] == ev.xkey.keycode &&
 204                                     ((wKeyBindings[WKBD_FOCUSNEXT].modifier & mask)
 205                                      || (wKeyBindings[WKBD_FOCUSPREV].modifier & mask)
 206                                      || (wKeyBindings[WKBD_GROUPNEXT].modifier & mask)
 207                                      || (wKeyBindings[WKBD_GROUPPREV].modifier & mask))) {
 208                                         done = True;
 209                                         break;
 210                                 }
 211                         }
 212                         break;
 213
 214                 case EnterNotify:
 215
 216                         /* ignore unwanted EnterNotify's */
 217                         break;
 218
 219                 case LeaveNotify:
 220                 case MotionNotify:
 221
 222                 case ButtonRelease:
 223                         {
 224                                 WWindow *tmp;
 225                                 tmp = wSwitchPanelHandleEvent(swpanel, &ev);
 226                                 if (tmp) {
 227                                         newFocused = tmp;
 228                                         oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr, False);
 229
 230                                         if (ev.type == ButtonRelease)
 231                                                 done = True;
 232                                 }
 233                         }
 234                         break;
 235
 236                 default:
 237                         WMHandleEvent(&ev);
 238                         break;
 239                 }
 240         }
 241         if (keymap)
 242                 XFreeModifiermap(keymap);
 243
 244         if (hasModifier) {
 245
 246                 XUngrabKeyboard(dpy, CurrentTime);
 247         }
 248
 249         if (swpanel)
 250                 wSwitchPanelDestroy(swpanel);
 251
 252         if (newFocused && !esc_cancel) {
 253                 wRaiseFrame(newFocused->frame->core);
 254                 CommitStacking(scr);
 255                 if (!newFocused->flags.mapped)
 256                         wMakeWindowVisible(newFocused);
 257                 wSetFocusTo(scr, newFocused);
 258         }
 259
 260         scr->flags.doing_alt_tab = 0;
 261
 262         if (somethingElse)
 263                 WMHandleEvent(&ev);
 264 }