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 #include "WindowMaker.h"
  30 #include "GNUstep.h"
  31 #include "screen.h"
  32 #include "wcore.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)
  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                 raiseWindow(swpanel, newFocused);
  76         }
  77
  78         return oldFocused;
  79 }
  80
  81 void StartWindozeCycle(WWindow * wwin, XEvent * event, Bool next)
  82 {
  83
  84         XModifierKeymap *keymap        = NULL;
  85         WSwitchPanel    *swpanel       = NULL;
  86         WScreen         *scr           = wScreenForRootWindow(event->xkey.root);
  87         KeyCode         leftKey        = XKeysymToKeycode(dpy, XK_Left);
  88         KeyCode         rightKey       = XKeysymToKeycode(dpy, XK_Right);
  89         KeyCode         homeKey        = XKeysymToKeycode(dpy, XK_Home);
  90         KeyCode         endKey         = XKeysymToKeycode(dpy, XK_End);
  91         KeyCode         shiftLKey      = XKeysymToKeycode(dpy, XK_Shift_L);
  92         KeyCode         shiftRKey      = XKeysymToKeycode(dpy, XK_Shift_R);
  93         KeyCode         escapeKey      = XKeysymToKeycode(dpy, XK_Escape);
  94         Bool            esc_cancel     = False;
  95         Bool            somethingElse  = False;
  96         Bool            done           = False;
  97         Bool            hasModifier;
  98         int             modifiers;
  99         WWindow         *newFocused;
 100         WWindow         *oldFocused;
 101         XEvent          ev;
 102
 103
 104         if (!wwin)
 105                 return;
 106
 107         if (next)
 108                 hasModifier = (wKeyBindings[WKBD_FOCUSNEXT].modifier != 0);
 109         else
 110                 hasModifier = (wKeyBindings[WKBD_FOCUSPREV].modifier != 0);
 111
 112         if (hasModifier) {
 113                 keymap = XGetModifierMapping(dpy);
 114
 115 #ifdef DEBUG
 116                 printf("Grabbing keyboard\n");
 117 #endif
 118                 XGrabKeyboard(dpy, scr->root_win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
 119         }
 120
 121         scr->flags.doing_alt_tab = 1;
 122
 123         swpanel = wInitSwitchPanel(scr, wwin, scr->current_workspace);
 124         oldFocused = wwin;
 125
 126         if (swpanel) {
 127                 newFocused = wSwitchPanelSelectNext(swpanel, !next);
 128                 oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr);
 129         } else {
 130                 if (wwin->frame->workspace == scr->current_workspace)
 131                         newFocused = wwin;
 132                 else
 133                         newFocused = NULL;
 134         }
 135
 136         while (hasModifier && !done) {
 137                 int i;
 138
 139                 WMMaskEvent(dpy, KeyPressMask | KeyReleaseMask | ExposureMask
 140                             | PointerMotionMask | ButtonReleaseMask | EnterWindowMask, &ev);
 141
 142                 /* ignore CapsLock */
 143                 modifiers = ev.xkey.state & ValidModMask;
 144
 145                 switch (ev.type) {
 146                 case KeyPress:
 147
 148                         if (!swpanel) {
 149                                 done = True;
 150                                 break;
 151                         }
 152
 153                         if ((wKeyBindings[WKBD_FOCUSNEXT].keycode == ev.xkey.keycode
 154                              && wKeyBindings[WKBD_FOCUSNEXT].modifier == modifiers)
 155                             || ev.xkey.keycode == rightKey) {
 156
 157                                 newFocused = wSwitchPanelSelectNext(swpanel, False);
 158                                 oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr);
 159
 160                         } else if ((wKeyBindings[WKBD_FOCUSPREV].keycode == ev.xkey.keycode
 161                                     && wKeyBindings[WKBD_FOCUSPREV].modifier == modifiers)
 162                                    || ev.xkey.keycode == leftKey) {
 163
 164                                 newFocused = wSwitchPanelSelectNext(swpanel, True);
 165                                 oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr);
 166
 167                         } else if (ev.xkey.keycode == homeKey || ev.xkey.keycode == endKey) {
 168
 169                                 newFocused = wSwitchPanelSelectFirst(swpanel, ev.xkey.keycode != homeKey);
 170                                 oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr);
 171
 172                         } else if (ev.xkey.keycode == escapeKey) {
 173
 174                                 /* Focus the first window of the swpanel, despite the 'False' */
 175                                 newFocused = wSwitchPanelSelectFirst(swpanel, False);
 176                                 oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr);
 177                                 esc_cancel = True;
 178                                 done = True;
 179
 180                         } else if (ev.xkey.keycode != shiftLKey && ev.xkey.keycode != shiftRKey) {
 181
 182                                 somethingElse = True;
 183                                 done = True;
 184                         }
 185                         break;
 186
 187                 case KeyRelease:
 188
 189                         for (i = 0; i < 8 * keymap->max_keypermod; i++) {
 190
 191                                 if (keymap->modifiermap[i] == ev.xkey.keycode &&
 192                                     wKeyBindings[WKBD_FOCUSNEXT].modifier & 1 << (i / keymap->max_keypermod)) {
 193                                         done = True;
 194                                         break;
 195                                 }
 196                         }
 197                         break;
 198
 199                 case EnterNotify:
 200                         /* ignore unwanted EnterNotify's */
 201                         break;
 202
 203                 case LeaveNotify:
 204                 case MotionNotify:
 205                 case ButtonRelease:
 206                         {
 207                                 WWindow *tmp;
 208                                 if (swpanel) {
 209                                         tmp = wSwitchPanelHandleEvent(swpanel, &ev);
 210                                         if (tmp) {
 211                                                 newFocused = tmp;
 212                                                 oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr);
 213
 214                                                 if (ev.type == ButtonRelease)
 215                                                         done = True;
 216                                         }
 217                                 }
 218                         }
 219                         break;
 220
 221                 default:
 222                         WMHandleEvent(&ev);
 223                         break;
 224                 }
 225         }
 226         if (keymap)
 227                 XFreeModifiermap(keymap);
 228
 229         if (hasModifier) {
 230
 231                 XUngrabKeyboard(dpy, CurrentTime);
 232         }
 233
 234         if (swpanel)
 235                 wSwitchPanelDestroy(swpanel);
 236
 237         if (newFocused && !esc_cancel) {
 238                 wRaiseFrame(newFocused->frame->core);
 239                 CommitStacking(scr);
 240                 if (!newFocused->flags.mapped)
 241                         wMakeWindowVisible(newFocused);
 242                 wSetFocusTo(scr, newFocused);
 243         }
 244
 245         scr->flags.doing_alt_tab = 0;
 246
 247         if (somethingElse)
 248                 WMHandleEvent(&ev);
 249 }