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 "wcore.h"
  34 #include "window.h"
  35 #include "framewin.h"
  36 #include "keybind.h"
  37 #include "actions.h"
  38 #include "stacking.h"
  39 #include "funcs.h"
  40 #include "xinerama.h"
  41 #include "switchpanel.h"
  42
  43 /* Globals */
  44 extern WPreferences wPreferences;
  45
  46 extern WShortKey wKeyBindings[WKBD_LAST];
  47
  48 static void raiseWindow(WSwitchPanel * swpanel, WWindow * wwin)
  49 {
  50         Window swwin = wSwitchPanelGetWindow(swpanel);
  51
  52         if (wwin->flags.mapped) {
  53                 if (swwin != None) {
  54                         Window win[2];
  55
  56                         win[0] = swwin;
  57                         win[1] = wwin->frame->core->window;
  58
  59                         XRestackWindows(dpy, win, 2);
  60                 } else
  61                         XRaiseWindow(dpy, wwin->frame->core->window);
  62         }
  63 }
  64
  65 static WWindow *change_focus_and_raise(WWindow *newFocused, WWindow *oldFocused,
  66                                        WSwitchPanel *swpanel, WScreen *scr, Bool esc_cancel)
  67 {
  68         if (!newFocused)
  69                 return oldFocused;
  70
  71         wWindowFocus(newFocused, oldFocused);
  72         oldFocused = newFocused;
  73
  74         if (wPreferences.circ_raise) {
  75                 CommitStacking(scr);
  76
  77                 if (!esc_cancel)
  78                         raiseWindow(swpanel, newFocused);
  79         }
  80
  81         return oldFocused;
  82 }
  83
  84 void StartWindozeCycle(WWindow * wwin, XEvent * event, Bool next, Bool class_only)
  85 {
  86
  87         XModifierKeymap *keymap        = NULL;
  88         WSwitchPanel    *swpanel       = NULL;
  89         WScreen         *scr           = wScreenForRootWindow(event->xkey.root);
  90         KeyCode         leftKey        = XKeysymToKeycode(dpy, XK_Left);
  91         KeyCode         rightKey       = XKeysymToKeycode(dpy, XK_Right);
  92         KeyCode         homeKey        = XKeysymToKeycode(dpy, XK_Home);
  93         KeyCode         endKey         = XKeysymToKeycode(dpy, XK_End);
  94         KeyCode         shiftLKey      = XKeysymToKeycode(dpy, XK_Shift_L);
  95         KeyCode         shiftRKey      = XKeysymToKeycode(dpy, XK_Shift_R);
  96         KeyCode         escapeKey      = XKeysymToKeycode(dpy, XK_Escape);
  97         Bool            esc_cancel     = False;
  98         Bool            somethingElse  = False;
  99         Bool            done           = False;
 100         Bool            hasModifier;
 101         int             modifiers;
 102         WWindow         *newFocused;
 103         WWindow         *oldFocused;
 104         XEvent          ev;
 105
 106
 107         if (!wwin)
 108                 return;
 109
 110         if (next)
 111                 hasModifier = (wKeyBindings[WKBD_FOCUSNEXT].modifier != 0);
 112         else
 113                 hasModifier = (wKeyBindings[WKBD_FOCUSPREV].modifier != 0);
 114
 115         if (hasModifier) {
 116                 keymap = XGetModifierMapping(dpy);
 117
 118 #ifdef DEBUG
 119                 printf("Grabbing keyboard\n");
 120 #endif
 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, scr->current_workspace, class_only);
 127         oldFocused = wwin;
 128
 129         if (swpanel) {
 130
 131                 if (wwin->flags.mapped)
 132                         newFocused = wSwitchPanelSelectNext(swpanel, !next);
 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                         done = True;
 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);
 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);
 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 != shiftLKey && ev.xkey.keycode != shiftRKey) {
 192
 193                                 somethingElse = True;
 194                                 done = True;
 195                         }
 196                         break;
 197
 198                 case KeyRelease:
 199
 200                         for (i = 0; i < 8 * keymap->max_keypermod; i++) {
 201
 202                                 int mask = 1 << (i / keymap->max_keypermod);
 203
 204                                 if (keymap->modifiermap[i] == ev.xkey.keycode &&
 205                                     ((wKeyBindings[WKBD_FOCUSNEXT].modifier & mask)
 206                                      || (wKeyBindings[WKBD_FOCUSPREV].modifier & mask)
 207                                      || (wKeyBindings[WKBD_GROUPNEXT].modifier & mask)
 208                                      || (wKeyBindings[WKBD_GROUPPREV].modifier & mask))) {
 209                                         done = True;
 210                                         break;
 211                                 }
 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                         newFocused = wSwitchPanelHandleEvent(swpanel, &ev);
 226                         oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr, False);
 227
 228                         if (ev.type == ButtonRelease)
 229                                 done = True;
 230                         break;
 231
 232                 default:
 233                         WMHandleEvent(&ev);
 234                         break;
 235                 }
 236         }
 237         if (keymap)
 238                 XFreeModifiermap(keymap);
 239
 240         if (hasModifier) {
 241
 242                 XUngrabKeyboard(dpy, CurrentTime);
 243         }
 244
 245         if (swpanel)
 246                 wSwitchPanelDestroy(swpanel);
 247
 248         if (newFocused && !esc_cancel) {
 249                 wRaiseFrame(newFocused->frame->core);
 250                 CommitStacking(scr);
 251                 if (!newFocused->flags.mapped)
 252                         wMakeWindowVisible(newFocused);
 253                 wSetFocusTo(scr, newFocused);
 254         }
 255
 256         scr->flags.doing_alt_tab = 0;
 257
 258         if (somethingElse)
 259                 WMHandleEvent(&ev);
 260 }