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 along
  18  *  with this program; if not, write to the Free Software Foundation, Inc.,
  19  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  */
  21
  22 #include "wconfig.h"
  23
  24 #include <stdlib.h>
  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 "window.h"
  33 #include "framewin.h"
  34 #include "keybind.h"
  35 #include "actions.h"
  36 #include "stacking.h"
  37 #include "cycling.h"
  38 #include "xinerama.h"
  39 #include "switchpanel.h"
  40
  41
  42 static void raiseWindow(WSwitchPanel * swpanel, WWindow * wwin)
  43 {
  44         Window swwin = wSwitchPanelGetWindow(swpanel);
  45
  46         if (wwin->flags.mapped) {
  47                 if (swwin != None) {
  48                         Window win[2];
  49
  50                         win[0] = swwin;
  51                         win[1] = wwin->frame->core->window;
  52
  53                         XRestackWindows(dpy, win, 2);
  54                 } else
  55                         XRaiseWindow(dpy, wwin->frame->core->window);
  56         }
  57 }
  58
  59 static WWindow *change_focus_and_raise(WWindow *newFocused, WWindow *oldFocused,
  60                                        WSwitchPanel *swpanel, WScreen *scr, Bool esc_cancel)
  61 {
  62         if (!newFocused)
  63                 return oldFocused;
  64
  65         wWindowFocus(newFocused, oldFocused);
  66         oldFocused = newFocused;
  67
  68         if (wPreferences.circ_raise) {
  69                 CommitStacking(scr);
  70
  71                 if (!esc_cancel)
  72                         raiseWindow(swpanel, newFocused);
  73         }
  74
  75         return oldFocused;
  76 }
  77
  78 void StartWindozeCycle(WWindow *wwin, XEvent *event, Bool next, Bool class_only)
  79 {
  80
  81         WShortKey binding;
  82         WSwitchPanel    *swpanel       = NULL;
  83         WScreen         *scr           = wScreenForRootWindow(event->xkey.root);
  84         KeyCode         leftKey        = XKeysymToKeycode(dpy, XK_Left);
  85         KeyCode         rightKey       = XKeysymToKeycode(dpy, XK_Right);
  86         KeyCode         homeKey        = XKeysymToKeycode(dpy, XK_Home);
  87         KeyCode         endKey         = XKeysymToKeycode(dpy, XK_End);
  88         KeyCode         shiftLKey      = XKeysymToKeycode(dpy, XK_Shift_L);
  89         KeyCode         shiftRKey      = XKeysymToKeycode(dpy, XK_Shift_R);
  90         KeyCode         escapeKey      = XKeysymToKeycode(dpy, XK_Escape);
  91         KeyCode         returnKey      = XKeysymToKeycode(dpy, XK_Return);
  92         Bool            esc_cancel     = False;
  93         Bool            somethingElse  = False;
  94         Bool            done           = False;
  95         Bool            hasModifier;
  96         int             modifiers;
  97         WWindow         *newFocused;
  98         WWindow         *oldFocused;
  99         XEvent          ev;
 100
 101
 102         if (!wwin)
 103                 return;
 104
 105         if (next) {
 106                 if (class_only)
 107                         binding = wKeyBindings[WKBD_GROUPNEXT];
 108                 else
 109                         binding = wKeyBindings[WKBD_FOCUSNEXT];
 110         } else {
 111                 if (class_only)
 112                         binding = wKeyBindings[WKBD_GROUPPREV];
 113                 else
 114                         binding = wKeyBindings[WKBD_FOCUSPREV];
 115         }
 116
 117         hasModifier = (binding.modifier != 0);
 118         if (hasModifier)
 119                 XGrabKeyboard(dpy, scr->root_win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
 120
 121         scr->flags.doing_alt_tab = 1;
 122
 123         swpanel = wInitSwitchPanel(scr, wwin, class_only);
 124         oldFocused = wwin;
 125
 126         if (swpanel) {
 127                 if (wwin->flags.mapped && !wPreferences.panel_only_open)
 128                         newFocused = wSwitchPanelSelectNext(swpanel, !next, True, False);
 129                 else
 130                         newFocused = wSwitchPanelSelectFirst(swpanel, False);
 131
 132                 oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr, False);
 133         } else {
 134                 if (wwin->frame->workspace == w_global.workspace.current)
 135                         newFocused = wwin;
 136                 else
 137                         newFocused = NULL;
 138         }
 139
 140         while (hasModifier && !done) {
 141                 WMMaskEvent(dpy, KeyPressMask | KeyReleaseMask | ExposureMask
 142                             | PointerMotionMask | ButtonReleaseMask | EnterWindowMask, &ev);
 143
 144                 /* ignore CapsLock */
 145                 modifiers = ev.xkey.state & w_global.shortcut.modifiers_mask;
 146
 147                 if (!swpanel)
 148                         break;
 149
 150                 switch (ev.type) {
 151                 case KeyPress:
 152                         if ((wKeyBindings[WKBD_FOCUSNEXT].keycode == ev.xkey.keycode
 153                              && wKeyBindings[WKBD_FOCUSNEXT].modifier == modifiers)
 154                             || (wKeyBindings[WKBD_GROUPNEXT].keycode == ev.xkey.keycode
 155                             && wKeyBindings[WKBD_GROUPNEXT].modifier == modifiers)
 156                             || ev.xkey.keycode == rightKey) {
 157
 158                                 newFocused = wSwitchPanelSelectNext(swpanel, False, ev.xkey.keycode != rightKey, (!class_only && wKeyBindings[WKBD_GROUPNEXT].keycode == ev.xkey.keycode && wKeyBindings[WKBD_GROUPNEXT].modifier == modifiers));
 159                                 oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr, False);
 160
 161                         } else if ((wKeyBindings[WKBD_FOCUSPREV].keycode == ev.xkey.keycode
 162                                     && wKeyBindings[WKBD_FOCUSPREV].modifier == modifiers)
 163                             || (wKeyBindings[WKBD_GROUPPREV].keycode == ev.xkey.keycode
 164                             && wKeyBindings[WKBD_GROUPPREV].modifier == modifiers)
 165                                    || ev.xkey.keycode == leftKey) {
 166
 167                                 newFocused = wSwitchPanelSelectNext(swpanel, True, ev.xkey.keycode != leftKey, (!class_only && wKeyBindings[WKBD_GROUPPREV].keycode == ev.xkey.keycode && wKeyBindings[WKBD_GROUPPREV].modifier == modifiers));
 168                                 oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr, False);
 169
 170                         } else if (ev.xkey.keycode == homeKey || ev.xkey.keycode == endKey) {
 171
 172                                 newFocused = wSwitchPanelSelectFirst(swpanel, ev.xkey.keycode != homeKey);
 173                                 oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr, False);
 174
 175                         } else if (ev.xkey.keycode == escapeKey) {
 176
 177                                 /* Focus the first window of the swpanel, despite the 'False' */
 178                                 newFocused = wSwitchPanelSelectFirst(swpanel, False);
 179                                 oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr, True);
 180                                 esc_cancel = True;
 181                                 done = True;
 182
 183                         } else if (ev.xkey.keycode == returnKey) {
 184
 185                                 /* Close the switchpanel without eating the keypress */
 186                                 done = True;
 187
 188                         } else if (ev.xkey.keycode != shiftLKey && ev.xkey.keycode != shiftRKey) {
 189
 190                                 somethingElse = True;
 191                                 done = True;
 192                         }
 193                         break;
 194
 195                 case KeyRelease:
 196                         if (ev.xkey.keycode == shiftLKey || ev.xkey.keycode == shiftRKey)
 197                                 if (wPreferences.strict_windoze_cycle)
 198                                         break;
 199
 200                         if (ev.xkey.keycode == leftKey || ev.xkey.keycode == rightKey)
 201                                 break;
 202
 203                         if (ev.xkey.keycode == XK_Return)
 204                                 break;
 205
 206                         if (ev.xkey.keycode != binding.keycode)
 207                                 done = True;
 208
 209                         break;
 210
 211                 case EnterNotify:
 212
 213                         /* ignore unwanted EnterNotify's */
 214                         break;
 215
 216                 case LeaveNotify:
 217                 case MotionNotify:
 218
 219                 case ButtonRelease:
 220                         {
 221                                 WWindow *tmp;
 222                                 tmp = wSwitchPanelHandleEvent(swpanel, &ev);
 223                                 if (tmp) {
 224                                         newFocused = tmp;
 225                                         oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr, False);
 226
 227                                         if (ev.type == ButtonRelease)
 228                                                 done = True;
 229                                 }
 230                         }
 231                         break;
 232
 233                 default:
 234                         WMHandleEvent(&ev);
 235                         break;
 236                 }
 237         }
 238
 239         if (hasModifier)
 240                 XUngrabKeyboard(dpy, CurrentTime);
 241
 242         if (swpanel)
 243                 wSwitchPanelDestroy(swpanel);
 244
 245         if (newFocused && !esc_cancel) {
 246                 wRaiseFrame(newFocused->frame->core);
 247                 CommitStacking(scr);
 248                 if (!newFocused->flags.mapped)
 249                         wMakeWindowVisible(newFocused);
 250                 wSetFocusTo(scr, newFocused);
 251         }
 252
 253         scr->flags.doing_alt_tab = 0;
 254
 255         if (somethingElse)
 256                 WMHandleEvent(&ev);
 257 }