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         WShortKey binding;
  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                         binding = wKeyBindings[WKBD_GROUPNEXT];
 110                 else
 111                         binding = wKeyBindings[WKBD_FOCUSNEXT];
 112         } else {
 113                 if (class_only)
 114                         binding = wKeyBindings[WKBD_GROUPPREV];
 115                 else
 116                         binding = wKeyBindings[WKBD_FOCUSPREV];
 117         }
 118
 119         hasModifier = (binding.modifier != 0);
 120         if (hasModifier)
 121                 XGrabKeyboard(dpy, scr->root_win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
 122
 123         scr->flags.doing_alt_tab = 1;
 124
 125         swpanel = wInitSwitchPanel(scr, wwin, class_only);
 126         oldFocused = wwin;
 127
 128         if (swpanel) {
 129                 if (wwin->flags.mapped && !wPreferences.panel_only_open)
 130                         newFocused = wSwitchPanelSelectNext(swpanel, !next, True, False);
 131                 else
 132                         newFocused = wSwitchPanelSelectFirst(swpanel, False);
 133
 134                 oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr, False);
 135         } else {
 136                 if (wwin->frame->workspace == scr->current_workspace)
 137                         newFocused = wwin;
 138                 else
 139                         newFocused = NULL;
 140         }
 141
 142         while (hasModifier && !done) {
 143                 WMMaskEvent(dpy, KeyPressMask | KeyReleaseMask | ExposureMask
 144                             | PointerMotionMask | ButtonReleaseMask | EnterWindowMask, &ev);
 145
 146                 /* ignore CapsLock */
 147                 modifiers = ev.xkey.state & ValidModMask;
 148
 149                 if (!swpanel)
 150                         break;
 151
 152                 switch (ev.type) {
 153                 case KeyPress:
 154                         if ((wKeyBindings[WKBD_FOCUSNEXT].keycode == ev.xkey.keycode
 155                              && wKeyBindings[WKBD_FOCUSNEXT].modifier == modifiers)
 156                             || (wKeyBindings[WKBD_GROUPNEXT].keycode == ev.xkey.keycode
 157                             && wKeyBindings[WKBD_GROUPNEXT].modifier == modifiers)
 158                             || ev.xkey.keycode == rightKey) {
 159
 160                                 newFocused = wSwitchPanelSelectNext(swpanel, False, ev.xkey.keycode != rightKey, (!class_only && wKeyBindings[WKBD_GROUPNEXT].keycode == ev.xkey.keycode && wKeyBindings[WKBD_GROUPNEXT].modifier == modifiers));
 161                                 oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr, False);
 162
 163                         } else if ((wKeyBindings[WKBD_FOCUSPREV].keycode == ev.xkey.keycode
 164                                     && wKeyBindings[WKBD_FOCUSPREV].modifier == modifiers)
 165                             || (wKeyBindings[WKBD_GROUPPREV].keycode == ev.xkey.keycode
 166                             && wKeyBindings[WKBD_GROUPPREV].modifier == modifiers)
 167                                    || ev.xkey.keycode == leftKey) {
 168
 169                                 newFocused = wSwitchPanelSelectNext(swpanel, True, ev.xkey.keycode != leftKey, (!class_only && wKeyBindings[WKBD_GROUPPREV].keycode == ev.xkey.keycode && wKeyBindings[WKBD_GROUPPREV].modifier == modifiers));
 170                                 oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr, False);
 171
 172                         } else if (ev.xkey.keycode == homeKey || ev.xkey.keycode == endKey) {
 173
 174                                 newFocused = wSwitchPanelSelectFirst(swpanel, ev.xkey.keycode != homeKey);
 175                                 oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr, False);
 176
 177                         } else if (ev.xkey.keycode == escapeKey) {
 178
 179                                 /* Focus the first window of the swpanel, despite the 'False' */
 180                                 newFocused = wSwitchPanelSelectFirst(swpanel, False);
 181                                 oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr, True);
 182                                 esc_cancel = True;
 183                                 done = True;
 184
 185                         } else if (ev.xkey.keycode == returnKey) {
 186
 187                                 /* Close the switchpanel without eating the keypress */
 188                                 done = True;
 189
 190                         } else if (ev.xkey.keycode != shiftLKey && ev.xkey.keycode != shiftRKey) {
 191
 192                                 somethingElse = True;
 193                                 done = True;
 194                         }
 195                         break;
 196
 197                 case KeyRelease:
 198                         if (ev.xkey.keycode == shiftLKey || ev.xkey.keycode == shiftRKey)
 199                                 if (wPreferences.strict_windoze_cycle)
 200                                         break;
 201
 202                         if (ev.xkey.keycode == XK_Return)
 203                                 break;
 204
 205                         if (ev.xkey.keycode != binding.keycode)
 206                                 done = True;
 207
 208                         break;
 209
 210                 case EnterNotify:
 211
 212                         /* ignore unwanted EnterNotify's */
 213                         break;
 214
 215                 case LeaveNotify:
 216                 case MotionNotify:
 217
 218                 case ButtonRelease:
 219                         {
 220                                 WWindow *tmp;
 221                                 tmp = wSwitchPanelHandleEvent(swpanel, &ev);
 222                                 if (tmp) {
 223                                         newFocused = tmp;
 224                                         oldFocused = change_focus_and_raise(newFocused, oldFocused, swpanel, scr, False);
 225
 226                                         if (ev.type == ButtonRelease)
 227                                                 done = True;
 228                                 }
 229                         }
 230                         break;
 231
 232                 default:
 233                         WMHandleEvent(&ev);
 234                         break;
 235                 }
 236         }
 237
 238         if (hasModifier)
 239                 XUngrabKeyboard(dpy, CurrentTime);
 240
 241         if (swpanel)
 242                 wSwitchPanelDestroy(swpanel);
 243
 244         if (newFocused && !esc_cancel) {
 245                 wRaiseFrame(newFocused->frame->core);
 246                 CommitStacking(scr);
 247                 if (!newFocused->flags.mapped)
 248                         wMakeWindowVisible(newFocused);
 249                 wSetFocusTo(scr, newFocused);
 250         }
 251
 252         scr->flags.doing_alt_tab = 0;
 253
 254         if (somethingElse)
 255                 WMHandleEvent(&ev);
 256 }