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 || wwin->flags.shaded) {
  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         /* allow the focused window to float on top of a fullscreen window */
  66         if (oldFocused->flags.fullscreen)
  67                 ChangeStackingLevel(oldFocused->frame->core, WMNormalLevel);
  68
  69         wWindowFocus(newFocused, oldFocused);
  70         oldFocused = newFocused;
  71
  72         if (wPreferences.circ_raise) {
  73                 CommitStacking(scr);
  74
  75                 if (!esc_cancel)
  76                         raiseWindow(swpanel, newFocused);
  77         }
  78
  79         return oldFocused;
  80 }
  81
  82 void StartWindozeCycle(WWindow *wwin, XEvent *event, Bool next, Bool class_only)
  83 {
  84
  85         WShortKey binding;
  86         WSwitchPanel    *swpanel       = NULL;
  87         WScreen         *scr           = wScreenForRootWindow(event->xkey.root);
  88         KeyCode         leftKey        = XKeysymToKeycode(dpy, XK_Left);
  89         KeyCode         rightKey       = XKeysymToKeycode(dpy, XK_Right);
  90         KeyCode         homeKey        = XKeysymToKeycode(dpy, XK_Home);
  91         KeyCode         endKey         = XKeysymToKeycode(dpy, XK_End);
  92         KeyCode         shiftLKey      = XKeysymToKeycode(dpy, XK_Shift_L);
  93         KeyCode         shiftRKey      = XKeysymToKeycode(dpy, XK_Shift_R);
  94         KeyCode         escapeKey      = XKeysymToKeycode(dpy, XK_Escape);
  95         KeyCode         returnKey      = XKeysymToKeycode(dpy, XK_Return);
  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                 if (class_only)
 111                         binding = wKeyBindings[WKBD_GROUPNEXT];
 112                 else
 113                         binding = wKeyBindings[WKBD_FOCUSNEXT];
 114         } else {
 115                 if (class_only)
 116                         binding = wKeyBindings[WKBD_GROUPPREV];
 117                 else
 118                         binding = wKeyBindings[WKBD_FOCUSPREV];
 119         }
 120
 121         hasModifier = (binding.modifier != 0);
 122         if (hasModifier)
 123                 XGrabKeyboard(dpy, scr->root_win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
 124
 125         scr->flags.doing_alt_tab = 1;
 126
 127         swpanel = wInitSwitchPanel(scr, wwin, class_only);
 128         oldFocused = wwin;
 129
 130         if (swpanel) {
 131                 if (wwin->flags.mapped && !wPreferences.panel_only_open)
 132                         newFocused = wSwitchPanelSelectNext(swpanel, !next, True, False);
 133                 else
 134                         newFocused = wSwitchPanelSelectFirst(swpanel, False);
 135
 136                 oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr, False);
 137         } else {
 138                 if (wwin->frame->workspace == scr->current_workspace)
 139                         newFocused = wwin;
 140                 else
 141                         newFocused = NULL;
 142         }
 143
 144         while (hasModifier && !done) {
 145                 WMMaskEvent(dpy, KeyPressMask | KeyReleaseMask | ExposureMask
 146                             | PointerMotionMask | ButtonReleaseMask | EnterWindowMask, &ev);
 147
 148                 /* ignore CapsLock */
 149                 modifiers = ev.xkey.state & w_global.shortcut.modifiers_mask;
 150
 151                 if (!swpanel)
 152                         break;
 153
 154                 switch (ev.type) {
 155                 case KeyPress:
 156                         if ((wKeyBindings[WKBD_FOCUSNEXT].keycode == ev.xkey.keycode
 157                              && wKeyBindings[WKBD_FOCUSNEXT].modifier == modifiers)
 158                             || (wKeyBindings[WKBD_GROUPNEXT].keycode == ev.xkey.keycode
 159                             && wKeyBindings[WKBD_GROUPNEXT].modifier == modifiers)
 160                             || ev.xkey.keycode == rightKey) {
 161
 162                                 newFocused = wSwitchPanelSelectNext(swpanel, False, ev.xkey.keycode != rightKey, (!class_only && wKeyBindings[WKBD_GROUPNEXT].keycode == ev.xkey.keycode && wKeyBindings[WKBD_GROUPNEXT].modifier == modifiers));
 163                                 oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr, False);
 164
 165                         } else if ((wKeyBindings[WKBD_FOCUSPREV].keycode == ev.xkey.keycode
 166                                     && wKeyBindings[WKBD_FOCUSPREV].modifier == modifiers)
 167                             || (wKeyBindings[WKBD_GROUPPREV].keycode == ev.xkey.keycode
 168                             && wKeyBindings[WKBD_GROUPPREV].modifier == modifiers)
 169                                    || ev.xkey.keycode == leftKey) {
 170
 171                                 newFocused = wSwitchPanelSelectNext(swpanel, True, ev.xkey.keycode != leftKey, (!class_only && wKeyBindings[WKBD_GROUPPREV].keycode == ev.xkey.keycode && wKeyBindings[WKBD_GROUPPREV].modifier == modifiers));
 172                                 oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr, False);
 173
 174                         } else if (ev.xkey.keycode == homeKey || ev.xkey.keycode == endKey) {
 175
 176                                 newFocused = wSwitchPanelSelectFirst(swpanel, ev.xkey.keycode != homeKey);
 177                                 oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr, False);
 178
 179                         } else if (ev.xkey.keycode == escapeKey) {
 180
 181                                 /* Focus the first window of the swpanel, despite the 'False' */
 182                                 newFocused = wSwitchPanelSelectFirst(swpanel, False);
 183                                 oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr, True);
 184                                 esc_cancel = True;
 185                                 done = True;
 186
 187                         } else if (ev.xkey.keycode == returnKey) {
 188
 189                                 /* Close the switch panel without eating the keypress */
 190                                 done = True;
 191
 192                         } else if (ev.xkey.keycode != shiftLKey && ev.xkey.keycode != shiftRKey) {
 193
 194                                 somethingElse = True;
 195                                 done = True;
 196                         }
 197                         break;
 198
 199                 case KeyRelease:
 200                         if (ev.xkey.keycode == shiftLKey || ev.xkey.keycode == shiftRKey)
 201                                 if (wPreferences.strict_windoze_cycle)
 202                                         break;
 203
 204                         if (ev.xkey.keycode == leftKey || ev.xkey.keycode == rightKey)
 205                                 break;
 206
 207                         if (ev.xkey.keycode == XK_Return)
 208                                 break;
 209
 210                         if (ev.xkey.keycode != binding.keycode)
 211                                 done = True;
 212
 213                         break;
 214
 215                 case EnterNotify:
 216
 217                         /* ignore unwanted EnterNotify's */
 218                         break;
 219
 220                 case LeaveNotify:
 221                 case MotionNotify:
 222
 223                 case ButtonRelease:
 224                         {
 225                                 WWindow *tmp;
 226                                 tmp = wSwitchPanelHandleEvent(swpanel, &ev);
 227                                 if (tmp) {
 228                                         newFocused = tmp;
 229                                         oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr, False);
 230
 231                                         if (ev.type == ButtonRelease)
 232                                                 done = True;
 233                                 }
 234                         }
 235                         break;
 236
 237                 default:
 238                         WMHandleEvent(&ev);
 239                         break;
 240                 }
 241         }
 242
 243         if (hasModifier)
 244                 XUngrabKeyboard(dpy, CurrentTime);
 245
 246         if (swpanel)
 247                 wSwitchPanelDestroy(swpanel);
 248
 249         if (newFocused && !esc_cancel) {
 250                 wRaiseFrame(newFocused->frame->core);
 251                 CommitStacking(scr);
 252                 if (!newFocused->flags.mapped)
 253                         wMakeWindowVisible(newFocused);
 254                 wSetFocusTo(scr, newFocused);
 255         }
 256
 257         scr->flags.doing_alt_tab = 0;
 258
 259         if (somethingElse)
 260                 WMHandleEvent(&ev);
 261 }