ioncore/netwm.c

   1 /*
   2  * ion/ioncore/netwm.c
   3  *
   4  * Copyright (c) Tuomo Valkonen 1999-2009.
   5  *
   6  * See the included file LICENSE for details.
   7  */
   8
   9 #include <X11/Xatom.h>
  10 #include <X11/Xmd.h>
  11
  12 #include <libtu/util.h>
  13 #include "common.h"
  14 #include "global.h"
  15 #include "fullscreen.h"
  16 #include "clientwin.h"
  17 #include "netwm.h"
  18 #include "property.h"
  19 #include "activity.h"
  20 #include "focus.h"
  21 #include "xwindow.h"
  22 #include "extlconv.h"
  23 #include "group.h"
  24 #include "event.h"
  25
  26
  27 /*{{{ Atoms */
  28
  29 static Atom atom_net_wm_name=0;
  30 static Atom atom_net_wm_state=0;
  31 static Atom atom_net_wm_state_fullscreen=0;
  32 static Atom atom_net_wm_state_demands_attention=0;
  33 static Atom atom_net_supporting_wm_check=0;
  34 static Atom atom_net_virtual_roots=0;
  35 static Atom atom_net_active_window=0;
  36 static Atom atom_net_wm_user_time=0;
  37 static Atom atom_net_wm_allowed_actions=0;
  38 static Atom atom_net_wm_moveresize=0;
  39
  40 #define N_NETWM 9
  41
  42 static Atom atom_net_supported=0;
  43
  44 #define SOURCE_UNKNOWN     0
  45 #define SOURCE_APPLICATION 1
  46 #define SOURCE_PAGER       2
  47
  48 /*}}}*/
  49
  50
  51 /*{{{ Initialisation */
  52
  53
  54 void netwm_init()
  55 {
  56     atom_net_wm_name=XInternAtom(ioncore_g.dpy, "_NET_WM_NAME", False);
  57     atom_net_wm_state=XInternAtom(ioncore_g.dpy, "_NET_WM_STATE", False);
  58     atom_net_wm_state_fullscreen=XInternAtom(ioncore_g.dpy, "_NET_WM_STATE_FULLSCREEN", False);
  59     atom_net_wm_state_demands_attention=XInternAtom(ioncore_g.dpy, "_NET_WM_STATE_DEMANDS_ATTENTION", False);
  60     atom_net_supported=XInternAtom(ioncore_g.dpy, "_NET_SUPPORTED", False);
  61     atom_net_supporting_wm_check=XInternAtom(ioncore_g.dpy, "_NET_SUPPORTING_WM_CHECK", False);
  62     atom_net_virtual_roots=XInternAtom(ioncore_g.dpy, "_NET_VIRTUAL_ROOTS", False);
  63     atom_net_active_window=XInternAtom(ioncore_g.dpy, "_NET_ACTIVE_WINDOW", False);
  64     atom_net_wm_user_time=XInternAtom(ioncore_g.dpy, "_NET_WM_USER_TIME", False);
  65     atom_net_wm_allowed_actions=XInternAtom(ioncore_g.dpy, "_NET_WM_ALLOWED_ACTIONS", False);
  66     atom_net_wm_moveresize=XInternAtom(ioncore_g.dpy, "_NET_WM_MOVERESIZE", False);
  67 }
  68
  69
  70 void netwm_init_rootwin(WRootWin *rw)
  71 {
  72     Atom atoms[N_NETWM];
  73     const char *p[1];
  74
  75     atoms[0]=atom_net_wm_name;
  76     atoms[1]=atom_net_wm_state;
  77     atoms[2]=atom_net_wm_state_fullscreen;
  78     atoms[3]=atom_net_wm_state_demands_attention;
  79     atoms[4]=atom_net_supporting_wm_check;
  80     atoms[5]=atom_net_virtual_roots;
  81     atoms[6]=atom_net_active_window;
  82     atoms[7]=atom_net_wm_allowed_actions;
  83     atoms[8]=atom_net_wm_moveresize;
  84
  85     XChangeProperty(ioncore_g.dpy, WROOTWIN_ROOT(rw),
  86                     atom_net_supporting_wm_check, XA_WINDOW,
  87                     32, PropModeReplace, (uchar*)&(rw->dummy_win), 1);
  88     XChangeProperty(ioncore_g.dpy, rw->dummy_win,
  89                     atom_net_supporting_wm_check, XA_WINDOW,
  90                     32, PropModeReplace, (uchar*)&(rw->dummy_win), 1);
  91     XChangeProperty(ioncore_g.dpy, WROOTWIN_ROOT(rw),
  92                     atom_net_supported, XA_ATOM,
  93                     32, PropModeReplace, (uchar*)atoms, N_NETWM);
  94
  95     p[0]=libtu_progbasename();
  96     /**
  97      * Unfortunately we cannot determine the charset of libtu_progbasename()
  98      * so we'll just have to guess it makes sense in the current locale charset
  99      */
 100     xwindow_set_utf8_property(rw->dummy_win, atom_net_wm_name, p, 1);
 101 }
 102
 103
 104 /*}}}*/
 105
 106
 107 /*{{{ _NET_WM_STATE */
 108
 109
 110 bool netwm_check_initial_fullscreen(WClientWin *cwin)
 111 {
 112
 113     int i, n;
 114     int ret=0;
 115     long *data;
 116
 117     n=xwindow_get_property(cwin->win, atom_net_wm_state, XA_ATOM,
 118                    1, TRUE, (uchar**)&data);
 119
 120     if(n<0)
 121         return FALSE;
 122
 123     for(i=0; i<n; i++){
 124         if(data[i]==(long)atom_net_wm_state_fullscreen)
 125             return TRUE;
 126     }
 127
 128     XFree((void*)data);
 129
 130     return FALSE;
 131 }
 132
 133 /*EXTL_DOC
 134  * refresh \_NET\_WM\_STATE markers for this window
 135  */
 136 EXTL_SAFE
 137 EXTL_EXPORT
 138 void ioncore_update_net_state(WClientWin *cwin)
 139 {
 140     netwm_update_state(cwin);
 141 }
 142
 143 void netwm_update_state(WClientWin *cwin)
 144 {
 145     CARD32 data[2];
 146     int n=0;
 147
 148     if(REGION_IS_FULLSCREEN(cwin))
 149         data[n++]=atom_net_wm_state_fullscreen;
 150     if(region_is_activity_r(&(cwin->region)))
 151         data[n++]=atom_net_wm_state_demands_attention;
 152
 153     XChangeProperty(ioncore_g.dpy, cwin->win, atom_net_wm_state,
 154                     XA_ATOM, 32, PropModeReplace, (uchar*)data, n);
 155 }
 156
 157 void netwm_update_allowed_actions(WClientWin *cwin)
 158 {
 159     CARD32 data[1];
 160     int n=0;
 161
 162     /* TODO add support for 'resize' and list it here */
 163     /* TODO add support for 'minimize' and list it here */
 164     /* TODO add support for 'maximize_horz' and list it here */
 165     /* TODO add support for 'maximize_vert' and list it here */
 166     /* TODO add support for 'fullscreen' and list it here */
 167     /* TODO add support for 'change desktop' and list it here */
 168     /* TODO add support for 'close' and list it here */
 169     /* TODO add support for 'above' and list it here */
 170     /* TODO add support for 'below' and list it here */
 171
 172     XChangeProperty(ioncore_g.dpy, cwin->win, atom_net_wm_allowed_actions,
 173                     XA_ATOM, 32, PropModeReplace, (uchar*)data, n);
 174 }
 175
 176
 177 void netwm_delete_state(WClientWin *cwin)
 178 {
 179     XDeleteProperty(ioncore_g.dpy, cwin->win, atom_net_wm_state);
 180 }
 181
 182
 183
 184 static void netwm_state_change_rq(WClientWin *cwin,
 185                                   const XClientMessageEvent *ev)
 186 {
 187     if((ev->data.l[1]==0 ||
 188         ev->data.l[1]!=(long)atom_net_wm_state_fullscreen) &&
 189        (ev->data.l[2]==0 ||
 190         ev->data.l[2]!=(long)atom_net_wm_state_fullscreen)){
 191         return;
 192     }
 193
 194     /* Ok, full screen add/remove/toggle */
 195     if(!REGION_IS_FULLSCREEN(cwin)){
 196         if(ev->data.l[0]==_NET_WM_STATE_ADD ||
 197            ev->data.l[0]==_NET_WM_STATE_TOGGLE){
 198             WRegion *grp=region_groupleader_of((WRegion*)cwin);
 199             bool sw=clientwin_fullscreen_may_switchto(cwin);
 200             cwin->flags|=CLIENTWIN_FS_RQ;
 201             if(!region_enter_fullscreen(grp, sw))
 202                 cwin->flags&=~CLIENTWIN_FS_RQ;
 203         }else{
 204             /* Should not be set.. */
 205             cwin->flags&=~CLIENTWIN_FS_RQ;
 206         }
 207     }else{
 208         if(ev->data.l[0]==_NET_WM_STATE_REMOVE ||
 209            ev->data.l[0]==_NET_WM_STATE_TOGGLE){
 210             WRegion *grp=region_groupleader_of((WRegion*)cwin);
 211             bool sw=clientwin_fullscreen_may_switchto(cwin);
 212             cwin->flags&=~CLIENTWIN_FS_RQ;
 213             region_leave_fullscreen(grp, sw);
 214         }else{
 215             /* Set the flag */
 216             cwin->flags|=CLIENTWIN_FS_RQ;
 217         }
 218     }
 219 }
 220
 221
 222 /*}}}*/
 223
 224
 225 /*{{{ _NET_ACTIVE_WINDOW */
 226
 227
 228 void netwm_set_active(WRegion *reg)
 229 {
 230     CARD32 data[1]={None};
 231
 232     if(OBJ_IS(reg, WClientWin))
 233         data[0]=region_xwindow(reg);
 234
 235     /* The spec doesn't say how multihead should be handled, so
 236      * we just update the root window the window is on.
 237      */
 238     XChangeProperty(ioncore_g.dpy, region_root_of(reg),
 239                     atom_net_active_window, XA_WINDOW,
 240                     32, PropModeReplace, (uchar*)data, 1);
 241 }
 242
 243
 244 static void netwm_active_window_rq(WClientWin *cwin,
 245                                    const XClientMessageEvent *ev)
 246 {
 247     long source=ev->data.l[0];
 248     /**
 249      * By default we ignore non-pager activity requests, as they're known to
 250      * steal focus from newly-created windows :(
 251      */
 252     bool ignore=source!=SOURCE_PAGER;
 253
 254     extl_table_gets_b(cwin->proptab, "ignore_net_active_window", &ignore);
 255
 256     if(!ignore)
 257         region_goto((WRegion*)cwin);
 258     else
 259         region_set_activity((WRegion*)cwin, SETPARAM_SET);
 260 }
 261
 262
 263 /*}}}*/
 264
 265
 266 /*{{{ _NET_WM_NAME */
 267
 268
 269 char **netwm_get_name(WClientWin *cwin)
 270 {
 271     return xwindow_get_text_property(cwin->win, atom_net_wm_name, NULL);
 272 }
 273
 274
 275 /*}}}*/
 276
 277
 278 /*{{{ netwm_handle_client_message */
 279
 280
 281 void netwm_handle_client_message(const XClientMessageEvent *ev)
 282 {
 283     /* Check _NET_WM_STATE fullscreen request */
 284     if(ev->message_type==atom_net_wm_state && ev->format==32){
 285         WClientWin *cwin=XWINDOW_REGION_OF_T(ev->window, WClientWin);
 286         if(cwin!=NULL)
 287             netwm_state_change_rq(cwin, ev);
 288     }
 289     /* Check _NET_ACTIVE_WINDOW request */
 290     else if(ev->message_type==atom_net_active_window && ev->format==32){
 291         WClientWin *cwin=XWINDOW_REGION_OF_T(ev->window, WClientWin);
 292         if(cwin!=NULL)
 293             netwm_active_window_rq(cwin, ev);
 294     }
 295 }
 296
 297
 298 /*}}}*/
 299
 300
 301 /*{{{ netwm_handle_property */
 302
 303
 304 bool netwm_handle_property(WClientWin *cwin, const XPropertyEvent *ev)
 305 {
 306     if(ev->atom!=atom_net_wm_name)
 307         return FALSE;
 308
 309     clientwin_get_set_name(cwin);
 310     return TRUE;
 311 }
 312
 313
 314 /*}}}*/
 315
 316
 317 /*{{{ user time */
 318
 319 /** When a new window is mapped, look at the netwm user time to find out
 320  * whether the new window should be switched to and get the focus.
 321  *
 322  * It is unclear what the desired behavior would be, and how we should takee
 323  * into consideration ioncore_g.usertime_diff_new and IONCORE_CLOCK_SKEW_MS,
 324  * so for now we deny raising the new window only in the special case where
 325  * its user time is set to 0, specifically preventing it from being raised.
 326  */
 327 void netwm_check_manage_user_time(WClientWin *cwin, WManageParams *param)
 328 {
 329     /* the currently focussed window */
 330     WClientWin *cur=OBJ_CAST(ioncore_g.focus_current, WClientWin);
 331     /* the new window */
 332     Window win=region_xwindow((WRegion*)cwin);
 333     Time now=ioncore_get_timestamp(); /* TODO: should really use the event.. */
 334     /* user time, current window user time */
 335     CARD32 ut=0, cut=0;
 336     /* whether the new (got) and current (gotcut) windows had their usertime
 337      * set */
 338     bool got=FALSE, gotcut=FALSE;
 339     bool nofocus=FALSE;
 340
 341     if(cur!=NULL){
 342         Window curwin;
 343         CARD32 cut;
 344         if(param->tfor==cur)
 345             return;
 346         curwin=region_xwindow((WRegion*)cur);
 347         gotcut=xwindow_get_cardinal_property(curwin, atom_net_wm_user_time, &cut);
 348     }
 349
 350     got=xwindow_get_cardinal_property(win, atom_net_wm_user_time, &ut);
 351
 352     /* The special value of zero on a newly mapped window can be used to
 353      * request that the window not be initially focused when it is mapped */
 354     if (got && ut == 0)
 355         nofocus = TRUE;
 356
 357     /* there was some other logic here, but it was not clear how it was meant
 358      * to work and prevented newly created windows from receiving the focus
 359      * in some cases
 360      * (https://sourceforge.net/tracker/?func=detail&aid=3109576&group_id=314802&atid=1324528)
 361      * Stripped until we decide how this is supposed to behave.
 362      */
 363
 364     if(nofocus){
 365         param->switchto=FALSE;
 366         param->jumpto=FALSE;
 367     }
 368 }
 369
 370
 371 /*}}}*/
 372
 373 /*{{{ _NET_WM_VIRTUAL_ROOTS */
 374
 375 int count_screens()
 376 {
 377     int result = 0;
 378     WScreen *scr;
 379
 380     FOR_ALL_SCREENS(scr){
 381         result++;
 382     }
 383
 384     return result;
 385 }
 386
 387 /*EXTL_DOC
 388  * refresh \_NET\_WM\_VIRTUAL\_ROOTS
 389  */
 390 EXTL_SAFE
 391 EXTL_EXPORT
 392 void ioncore_screens_updated(WRootWin *rw)
 393 {
 394     int current_screen = 0;
 395     int n_screens;
 396     CARD32 *virtualroots;
 397     WScreen *scr;
 398
 399     n_screens = count_screens();
 400     virtualroots = (CARD32*)malloc(n_screens * sizeof(CARD32));
 401
 402     FOR_ALL_SCREENS(scr){
 403         virtualroots[current_screen] = region_xwindow((WRegion *)scr);
 404         current_screen++;
 405     }
 406
 407     XChangeProperty(ioncore_g.dpy, WROOTWIN_ROOT(rw),
 408                     atom_net_virtual_roots, XA_WINDOW,
 409                     32, PropModeReplace, (uchar*)virtualroots, n_screens);
 410 }
 411
 412 /*}}}*/