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 /* Globals */
  42 extern WShortKey wKeyBindings[WKBD_LAST];
  43
  44 static void raiseWindow(WSwitchPanel * swpanel, WWindow * wwin)
  45 {
  46         Window swwin = wSwitchPanelGetWindow(swpanel);
  47
  48         if (wwin->flags.mapped) {
  49                 if (swwin != None) {
  50                         Window win[2];
  51
  52                         win[0] = swwin;
  53                         win[1] = wwin->frame->core->window;
  54
  55                         XRestackWindows(dpy, win, 2);
  56                 } else
  57                         XRaiseWindow(dpy, wwin->frame->core->window);
  58         }
  59 }
  60
  61 static WWindow *change_focus_and_raise(WWindow *newFocused, WWindow *oldFocused,
  62                                        WSwitchPanel *swpanel, WScreen *scr, Bool esc_cancel)
  63 {
  64         if (!newFocused)
  65                 return oldFocused;
  66
  67         wWindowFocus(newFocused, oldFocused);
  68         oldFocused = newFocused;
  69
  70         if (wPreferences.circ_raise) {
  71                 CommitStacking(scr);
  72
  73                 if (!esc_cancel)
  74                         raiseWindow(swpanel, newFocused);
  75         }
  76
  77         return oldFocused;
  78 }
  79
  80 void StartWindozeCycle(WWindow * wwin, XEvent * event, Bool next, Bool class_only)
  81 {
  82
  83         XModifierKeymap *keymap        = NULL;
  84         WSwitchPanel    *swpanel       = NULL;
  85         WScreen         *scr           = wScreenForRootWindow(event->xkey.root);
  86         KeyCode         leftKey        = XKeysymToKeycode(dpy, XK_Left);
  87         KeyCode         rightKey       = XKeysymToKeycode(dpy, XK_Right);
  88         KeyCode         homeKey        = XKeysymToKeycode(dpy, XK_Home);
  89         KeyCode         endKey         = XKeysymToKeycode(dpy, XK_End);
  90         KeyCode         shiftLKey      = XKeysymToKeycode(dpy, XK_Shift_L);
  91         KeyCode         shiftRKey      = XKeysymToKeycode(dpy, XK_Shift_R);
  92         KeyCode         escapeKey      = XKeysymToKeycode(dpy, XK_Escape);
  93         KeyCode         returnKey      = XKeysymToKeycode(dpy, XK_Return);
  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                 if (class_only)
 109                         hasModifier = (wKeyBindings[WKBD_GROUPNEXT].modifier != 0);
 110                 else
 111                         hasModifier = (wKeyBindings[WKBD_FOCUSNEXT].modifier != 0);
 112         } else {
 113                 if (class_only)
 114                         hasModifier = (wKeyBindings[WKBD_GROUPPREV].modifier != 0);
 115                 else
 116                         hasModifier = (wKeyBindings[WKBD_FOCUSPREV].modifier != 0);
 117         }
 118
 119         if (hasModifier) {
 120                 keymap = XGetModifierMapping(dpy);
 121                 XGrabKeyboard(dpy, scr->root_win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
 122         }
 123
 124         scr->flags.doing_alt_tab = 1;
 125
 126         swpanel = wInitSwitchPanel(scr, wwin, class_only);
 127         oldFocused = wwin;
 128
 129         if (swpanel) {
 130
 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                 int i;
 146
 147                 WMMaskEvent(dpy, KeyPressMask | KeyReleaseMask | ExposureMask
 148                             | PointerMotionMask | ButtonReleaseMask | EnterWindowMask, &ev);
 149
 150                 /* ignore CapsLock */
 151                 modifiers = ev.xkey.state & ValidModMask;
 152
 153                 if (!swpanel)
 154                         break;
 155
 156                 switch (ev.type) {
 157
 158                 case KeyPress:
 159
 160                         if ((wKeyBindings[WKBD_FOCUSNEXT].keycode == ev.xkey.keycode
 161                              && wKeyBindings[WKBD_FOCUSNEXT].modifier == modifiers)
 162                             || (wKeyBindings[WKBD_GROUPNEXT].keycode == ev.xkey.keycode
 163                             && wKeyBindings[WKBD_GROUPNEXT].modifier == modifiers)
 164                             || ev.xkey.keycode == rightKey) {
 165
 166                                 newFocused = wSwitchPanelSelectNext(swpanel, False, ev.xkey.keycode != rightKey, (!class_only && wKeyBindings[WKBD_GROUPNEXT].keycode == ev.xkey.keycode && wKeyBindings[WKBD_GROUPNEXT].modifier == modifiers));
 167                                 oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr, False);
 168
 169                         } else if ((wKeyBindings[WKBD_FOCUSPREV].keycode == ev.xkey.keycode
 170                                     && wKeyBindings[WKBD_FOCUSPREV].modifier == modifiers)
 171                             || (wKeyBindings[WKBD_GROUPPREV].keycode == ev.xkey.keycode
 172                             && wKeyBindings[WKBD_GROUPPREV].modifier == modifiers)
 173                                    || ev.xkey.keycode == leftKey) {
 174
 175                                 newFocused = wSwitchPanelSelectNext(swpanel, True, ev.xkey.keycode != leftKey, (!class_only && wKeyBindings[WKBD_GROUPPREV].keycode == ev.xkey.keycode && wKeyBindings[WKBD_GROUPPREV].modifier == modifiers));
 176                                 oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr, False);
 177
 178                         } else if (ev.xkey.keycode == homeKey || ev.xkey.keycode == endKey) {
 179
 180                                 newFocused = wSwitchPanelSelectFirst(swpanel, ev.xkey.keycode != homeKey);
 181                                 oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr, False);
 182
 183                         } else if (ev.xkey.keycode == escapeKey) {
 184
 185                                 /* Focus the first window of the swpanel, despite the 'False' */
 186                                 newFocused = wSwitchPanelSelectFirst(swpanel, False);
 187                                 oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr, True);
 188                                 esc_cancel = True;
 189                                 done = True;
 190
 191                         } else if (ev.xkey.keycode == returnKey) {
 192
 193                                 /* Close the switchpanel without eating the keypress */
 194                                 done = True;
 195
 196                         } else if (ev.xkey.keycode != shiftLKey && ev.xkey.keycode != shiftRKey) {
 197
 198                                 somethingElse = True;
 199                                 done = True;
 200                         }
 201                         break;
 202
 203                 case KeyRelease:
 204
 205                         if (ev.xkey.keycode == shiftLKey || ev.xkey.keycode == shiftRKey)
 206                                 if (wPreferences.strict_windoze_cycle)
 207                                         break;
 208
 209                         if (ev.xkey.keycode == XK_Return)
 210                                 break;
 211
 212                         for (i = 0; i < 8 * keymap->max_keypermod; i++) {
 213
 214                                 int mask = 1 << (i / keymap->max_keypermod);
 215
 216                                 if (keymap->modifiermap[i] == ev.xkey.keycode &&
 217                                     ((wKeyBindings[WKBD_FOCUSNEXT].modifier & mask)
 218                                      || (wKeyBindings[WKBD_FOCUSPREV].modifier & mask)
 219                                      || (wKeyBindings[WKBD_GROUPNEXT].modifier & mask)
 220                                      || (wKeyBindings[WKBD_GROUPPREV].modifier & mask))) {
 221                                         done = True;
 222                                         break;
 223                                 }
 224                         }
 225                         break;
 226
 227                 case EnterNotify:
 228
 229                         /* ignore unwanted EnterNotify's */
 230                         break;
 231
 232                 case LeaveNotify:
 233                 case MotionNotify:
 234
 235                 case ButtonRelease:
 236                         {
 237                                 WWindow *tmp;
 238                                 tmp = wSwitchPanelHandleEvent(swpanel, &ev);
 239                                 if (tmp) {
 240                                         newFocused = tmp;
 241                                         oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr, False);
 242
 243                                         if (ev.type == ButtonRelease)
 244                                                 done = True;
 245                                 }
 246                         }
 247                         break;
 248
 249                 default:
 250                         WMHandleEvent(&ev);
 251                         break;
 252                 }
 253         }
 254         if (keymap)
 255                 XFreeModifiermap(keymap);
 256
 257         if (hasModifier) {
 258
 259                 XUngrabKeyboard(dpy, CurrentTime);
 260         }
 261
 262         if (swpanel)
 263                 wSwitchPanelDestroy(swpanel);
 264
 265         if (newFocused && !esc_cancel) {
 266                 wRaiseFrame(newFocused->frame->core);
 267                 CommitStacking(scr);
 268                 if (!newFocused->flags.mapped)
 269                         wMakeWindowVisible(newFocused);
 270                 wSetFocusTo(scr, newFocused);
 271         }
 272
 273         scr->flags.doing_alt_tab = 0;
 274
 275         if (somethingElse)
 276                 WMHandleEvent(&ev);
 277 }