c/screen.c

   1 #include "openbox.h"
   2 #include "prop.h"
   3 #include "screen.h"
   4 #include "client.h"
   5 #include "focus.h"
   6
   7 #include <X11/Xlib.h>
   8 #ifdef HAVE_UNISTD_H
   9 #  include <sys/types.h>
  10 #  include <unistd.h>
  11 #endif
  12
  13 /*! The event mask to grab on the root window */
  14 #define ROOT_EVENTMASK (/*ColormapChangeMask |*/ PropertyChangeMask | \
  15                         EnterWindowMask | LeaveWindowMask | \
  16                         SubstructureNotifyMask | SubstructureRedirectMask | \
  17                         ButtonPressMask | ButtonReleaseMask | ButtonMotionMask)
  18
  19 guint    screen_num_desktops    = 1;
  20 guint    screen_desktop         = 0;
  21 Size     screen_physical_size;
  22 gboolean screen_showing_desktop;
  23 DesktopLayout screen_desktop_layout;
  24 GPtrArray *screen_desktop_names;
  25
  26 static Rect  *area = NULL;
  27 static Strut *strut = NULL;
  28
  29 static void screen_update_area();
  30
  31 static gboolean running;
  32 static int another_running(Display *d, XErrorEvent *e)
  33 {
  34     (void)d;(void)e;
  35     g_message("A window manager is already running on screen %d",
  36               ob_screen);
  37     running = TRUE;
  38     return -1;
  39 }
  40
  41 gboolean screen_annex()
  42 {
  43     XErrorHandler old;
  44     Window support;
  45     pid_t pid;
  46     int i, num_support;
  47     Atom *supported;
  48
  49     running = FALSE;
  50     old = XSetErrorHandler(another_running);
  51     XSelectInput(ob_display, ob_root, ROOT_EVENTMASK);
  52     XSync(ob_display, FALSE);
  53     XSetErrorHandler(old);
  54     if (running)
  55         return FALSE;
  56
  57     g_message("Managing screen %d", ob_screen);
  58
  59     /* set the mouse cursor for the root window (the default cursor) */
  60     XDefineCursor(ob_display, ob_root, ob_cursors.left_ptr);
  61
  62     /* set the OPENBOX_PID hint */
  63     pid = getpid();
  64     PROP_SET32(ob_root, openbox_pid, cardinal, pid);
  65
  66     /* create the netwm support window */
  67     support = XCreateSimpleWindow(ob_display, ob_root, 0, 0, 1, 1, 0, 0, 0);
  68
  69     /* set supporting window */
  70     PROP_SET32(ob_root, net_supporting_wm_check, window, support);
  71
  72     /* set properties on the supporting window */
  73     PROP_SETS(support, net_wm_name, utf8, "Openbox");
  74     PROP_SET32(support, net_supporting_wm_check, window, support);
  75
  76     /* set the _NET_SUPPORTED_ATOMS hint */
  77     num_support = 48;
  78     i = 0;
  79     supported = g_new(Atom, num_support);
  80     supported[i++] = prop_atoms.net_current_desktop;
  81     supported[i++] = prop_atoms.net_number_of_desktops;
  82     supported[i++] = prop_atoms.net_desktop_geometry;
  83     supported[i++] = prop_atoms.net_desktop_viewport;
  84     supported[i++] = prop_atoms.net_active_window;
  85     supported[i++] = prop_atoms.net_workarea;
  86     supported[i++] = prop_atoms.net_client_list;
  87     supported[i++] = prop_atoms.net_client_list_stacking;
  88     supported[i++] = prop_atoms.net_desktop_names;
  89     supported[i++] = prop_atoms.net_close_window;
  90     supported[i++] = prop_atoms.net_desktop_layout;
  91     supported[i++] = prop_atoms.net_showing_desktop;
  92     supported[i++] = prop_atoms.net_wm_name;
  93     supported[i++] = prop_atoms.net_wm_visible_name;
  94     supported[i++] = prop_atoms.net_wm_icon_name;
  95     supported[i++] = prop_atoms.net_wm_visible_icon_name;
  96     supported[i++] = prop_atoms.net_wm_desktop;
  97     supported[i++] = prop_atoms.net_wm_strut;
  98     supported[i++] = prop_atoms.net_wm_window_type;
  99     supported[i++] = prop_atoms.net_wm_window_type_desktop;
 100     supported[i++] = prop_atoms.net_wm_window_type_dock;
 101     supported[i++] = prop_atoms.net_wm_window_type_toolbar;
 102     supported[i++] = prop_atoms.net_wm_window_type_menu;
 103     supported[i++] = prop_atoms.net_wm_window_type_utility;
 104     supported[i++] = prop_atoms.net_wm_window_type_splash;
 105     supported[i++] = prop_atoms.net_wm_window_type_dialog;
 106     supported[i++] = prop_atoms.net_wm_window_type_normal;
 107     supported[i++] = prop_atoms.net_wm_allowed_actions;
 108     supported[i++] = prop_atoms.net_wm_action_move;
 109     supported[i++] = prop_atoms.net_wm_action_resize;
 110     supported[i++] = prop_atoms.net_wm_action_minimize;
 111     supported[i++] = prop_atoms.net_wm_action_shade;
 112     supported[i++] = prop_atoms.net_wm_action_maximize_horz;
 113     supported[i++] = prop_atoms.net_wm_action_maximize_vert;
 114     supported[i++] = prop_atoms.net_wm_action_fullscreen;
 115     supported[i++] = prop_atoms.net_wm_action_change_desktop;
 116     supported[i++] = prop_atoms.net_wm_action_close;
 117     supported[i++] = prop_atoms.net_wm_state;
 118     supported[i++] = prop_atoms.net_wm_state_modal;
 119     supported[i++] = prop_atoms.net_wm_state_maximized_vert;
 120     supported[i++] = prop_atoms.net_wm_state_maximized_horz;
 121     supported[i++] = prop_atoms.net_wm_state_shaded;
 122     supported[i++] = prop_atoms.net_wm_state_skip_taskbar;
 123     supported[i++] = prop_atoms.net_wm_state_skip_pager;
 124     supported[i++] = prop_atoms.net_wm_state_hidden;
 125     supported[i++] = prop_atoms.net_wm_state_fullscreen;
 126     supported[i++] = prop_atoms.net_wm_state_above;
 127     supported[i++] = prop_atoms.net_wm_state_below;
 128     g_assert(i == num_support);
 129 /*
 130   supported[] = prop_atoms.net_wm_moveresize;
 131   supported[] = prop_atoms.net_wm_moveresize_size_topleft;
 132   supported[] = prop_atoms.net_wm_moveresize_size_topright;
 133   supported[] = prop_atoms.net_wm_moveresize_size_bottomleft;
 134   supported[] = prop_atoms.net_wm_moveresize_size_bottomright;
 135   supported[] = prop_atoms.net_wm_moveresize_move;
 136   supported[] = prop_atoms.net_wm_action_stick;
 137 */
 138
 139     PROP_SET32A(ob_root, net_supported, atom, supported, num_support);
 140     g_free(supported);
 141
 142     return TRUE;
 143 }
 144
 145 void screen_startup()
 146 {
 147     screen_desktop_names = g_ptr_array_new();
 148
 149     /* get the initial size */
 150     screen_resize();
 151
 152     screen_set_num_desktops(4);
 153     screen_set_desktop(0);
 154
 155     /* don't start in showing-desktop mode */
 156     screen_showing_desktop = FALSE;
 157     PROP_SET32(ob_root, net_showing_desktop, cardinal, screen_showing_desktop);
 158
 159     screen_update_layout();
 160 }
 161
 162 void screen_shutdown()
 163 {
 164     guint i;
 165     for (i = 0; i < screen_desktop_names->len; ++i)
 166         g_free(g_ptr_array_index(screen_desktop_names, i));
 167     g_ptr_array_free(screen_desktop_names, TRUE);
 168     g_free(strut);
 169     g_free(area);
 170 }
 171
 172 void screen_resize()
 173 {
 174     /* Set the _NET_DESKTOP_GEOMETRY hint */
 175     /* XXX RandR support here? */
 176     int geometry[2];
 177
 178     geometry[0] = WidthOfScreen(ScreenOfDisplay(ob_display, ob_screen));
 179     geometry[1] = HeightOfScreen(ScreenOfDisplay(ob_display, ob_screen));
 180     PROP_SET32A(ob_root, net_desktop_geometry, cardinal, geometry, 2);
 181     screen_physical_size.width = geometry[0];
 182     screen_physical_size.height = geometry[1];
 183
 184     if (ob_state == State_Starting)
 185         return;
 186
 187     screen_update_struts();
 188
 189     /* XXX adjust more stuff ? */
 190 }
 191
 192 void screen_set_num_desktops(guint num)
 193 {
 194     unsigned long *viewport;
 195
 196     g_assert(num > 0);
 197
 198     /* move windows on desktops that will no longer exist! */
 199     /* XXX
 200        std::list<Client*>::iterator it, end = clients.end();
 201        for (it = clients.begin(); it != end; ++it) {
 202        unsigned int d = (*it)->desktop();
 203        if (d >= num && d != 0xffffffff) {
 204        XEvent ce;
 205        ce.xclient.type = ClientMessage;
 206        ce.xclient.message_type = otk::Property::atoms.net_wm_desktop;
 207        ce.xclient.display = **otk::display;
 208        ce.xclient.window = (*it)->window();
 209        ce.xclient.format = 32;
 210        ce.xclient.data.l[0] = num - 1;
 211        XSendEvent(**otk::display, _info->rootWindow(), false,
 212        SubstructureNotifyMask | SubstructureRedirectMask, &ce);
 213        }
 214        }
 215     */
 216
 217     screen_num_desktops = num;
 218     PROP_SET32(ob_root, net_number_of_desktops, cardinal, num);
 219
 220     /* set the viewport hint */
 221     viewport = g_new0(unsigned long, num * 2);
 222     PROP_SET32A(ob_root, net_desktop_viewport, cardinal, viewport, num * 2);
 223     g_free(viewport);
 224
 225     /* change our struts/area to match */
 226     screen_update_struts();
 227
 228     /* the number of rows/columns will differ */
 229     screen_update_layout();
 230
 231     /* may be some unnamed desktops that we need to fill in with names */
 232     screen_update_desktop_names();
 233
 234     /* change our desktop if we're on one that no longer exists! */
 235     if (screen_desktop >= screen_num_desktops)
 236         screen_set_desktop(num - 1);
 237 }
 238
 239 void screen_set_desktop(guint num)
 240 {
 241     guint old = screen_desktop;
 242
 243     g_assert(num < screen_num_desktops);
 244
 245     g_message("Moving to desktop %u", num);
 246
 247     screen_desktop = num;
 248     PROP_SET32(ob_root, net_current_desktop, cardinal, num);
 249
 250     if (old == num) return;
 251
 252     /* XXX show/hide all the clients
 253        std::list<Client*>::iterator it, end = clients.end();
 254        for (it = clients.begin(); it != end; ++it)
 255        (*it)->showhide(); */
 256
 257     /* XXX force the callbacks to fire
 258        if (!openbox->focusedClient())
 259        openbox->setFocusedClient(0); */
 260 }
 261
 262 void screen_update_layout()
 263 {
 264     unsigned long *data = NULL;
 265
 266     /* defaults */
 267     screen_desktop_layout.orientation = prop_atoms.net_wm_orientation_horz;
 268     screen_desktop_layout.start_corner = prop_atoms.net_wm_topleft;
 269     screen_desktop_layout.rows = 1;
 270     screen_desktop_layout.columns = screen_num_desktops;
 271
 272     if (PROP_GET32A(ob_root, net_desktop_layout, cardinal, data, 4)) {
 273         if (data[0] == prop_atoms.net_wm_orientation_vert)
 274             screen_desktop_layout.orientation = data[0];
 275         if (data[3] == prop_atoms.net_wm_topright)
 276             screen_desktop_layout.start_corner = data[3];
 277         else if (data[3] == prop_atoms.net_wm_bottomright)
 278             screen_desktop_layout.start_corner = data[3];
 279         else if (data[3] == prop_atoms.net_wm_bottomleft)
 280             screen_desktop_layout.start_corner = data[3];
 281
 282         /* fill in a zero rows/columns */
 283         if (!(data[1] == 0 && data[2] == 0)) { /* both 0's is bad data.. */
 284             if (data[1] == 0) {
 285                 data[1] = (screen_num_desktops +
 286                            screen_num_desktops % data[2]) / data[2];
 287             } else if (data[2] == 0) {
 288                 data[2] = (screen_num_desktops +
 289                            screen_num_desktops % data[1]) / data[1];
 290             }
 291             screen_desktop_layout.columns = data[1];
 292             screen_desktop_layout.rows = data[2];
 293         }
 294
 295         /* bounds checking */
 296         if (screen_desktop_layout.orientation ==
 297             prop_atoms.net_wm_orientation_horz) {
 298             if (screen_desktop_layout.rows > screen_num_desktops)
 299                 screen_desktop_layout.rows = screen_num_desktops;
 300             if (screen_desktop_layout.columns > ((screen_num_desktops +
 301                                                   screen_num_desktops %
 302                                                   screen_desktop_layout.rows) /
 303                                                  screen_desktop_layout.rows))
 304                 screen_desktop_layout.columns =
 305                     (screen_num_desktops + screen_num_desktops %
 306                      screen_desktop_layout.rows) /
 307                     screen_desktop_layout.rows;
 308         } else {
 309             if (screen_desktop_layout.columns > screen_num_desktops)
 310                 screen_desktop_layout.columns = screen_num_desktops;
 311             if (screen_desktop_layout.rows > ((screen_num_desktops +
 312                                                screen_num_desktops %
 313                                                screen_desktop_layout.columns) /
 314                                               screen_desktop_layout.columns))
 315                 screen_desktop_layout.rows =
 316                     (screen_num_desktops + screen_num_desktops %
 317                      screen_desktop_layout.columns) /
 318                     screen_desktop_layout.columns;
 319         }
 320         g_free(data);
 321     }
 322 }
 323
 324 void screen_update_desktop_names()
 325 {
 326     guint i;
 327
 328     /* empty the array */
 329     for (i = 0; i < screen_desktop_names->len; ++i)
 330         g_free(g_ptr_array_index(screen_desktop_names, i));
 331     g_ptr_array_set_size(screen_desktop_names, 0);
 332
 333     PROP_GETSA(ob_root, net_desktop_names, utf8, screen_desktop_names);
 334
 335     while (screen_desktop_names->len < screen_num_desktops)
 336         g_ptr_array_add(screen_desktop_names, g_strdup("Unnamed Desktop"));
 337 }
 338
 339 void screen_show_desktop(gboolean show)
 340 {
 341     GSList *it;
 342     static Window saved_focus = 0;
 343
 344     if (show == screen_showing_desktop) return; /* no change */
 345
 346     /* save the window focus, and restore it when leaving the show-desktop
 347        mode */
 348     if (show && focus_client)
 349         saved_focus = focus_client->window;
 350
 351     screen_showing_desktop = show;
 352
 353     for (it = client_list; it; it = g_slist_next(it)) {
 354         Client *client = it->data;
 355         if (client->type == Type_Desktop) {
 356             if (show) client_focus(client);
 357         } else
 358             client_showhide(client);
 359     }
 360
 361     if (!show) {
 362         Client *f = focus_client;
 363         if (!f || f->type == Type_Desktop) {
 364             Client *c = g_hash_table_lookup(client_map,
 365                                             (gpointer)saved_focus);
 366             if (c) client_focus(c);
 367         }
 368     }
 369
 370     show = show ? 1 : 0; /* make it boolean */
 371     PROP_SET32(ob_root, net_showing_desktop, cardinal, show);
 372 }
 373
 374 void screen_install_colormap(Client *client, gboolean install)
 375 {
 376     if (client == NULL) {
 377         /* XXX DONT USE THE DEFAULT SHIT HERE */
 378         if (install)
 379             XInstallColormap(ob_display,
 380                              DefaultColormap(ob_display, ob_screen));
 381         else
 382             XUninstallColormap(ob_display,
 383                                DefaultColormap(ob_display, ob_screen));
 384     } else {
 385         XWindowAttributes wa;
 386         if (XGetWindowAttributes(ob_display, client->window, &wa)) {
 387             if (install)
 388                 XInstallColormap(ob_display, wa.colormap);
 389             else
 390                 XUninstallColormap(ob_display, wa.colormap);
 391         }
 392     }
 393 }
 394
 395 void screen_update_struts()
 396 {
 397     GSList *it;
 398     guint i;
 399
 400     if (strut != NULL)
 401         g_free(strut);
 402     strut = g_new0(Strut, screen_num_desktops + 1);
 403
 404     for (it = client_list; it; it = it->next) {
 405         Client *c = it->data;
 406         if (c->iconic) continue; /* these dont count in the strut */
 407
 408         if (c->desktop == 0xffffffff) {
 409             for (i = 0; i < screen_num_desktops; ++i)
 410                 STRUT_ADD(strut[i], c->strut);
 411         } else {
 412             g_assert(c->desktop < screen_num_desktops);
 413             STRUT_ADD(strut[c->desktop], c->strut);
 414         }
 415         /* apply to the 'all desktops' strut */
 416         STRUT_ADD(strut[screen_num_desktops], c->strut);
 417     }
 418     screen_update_area();
 419 }
 420
 421 static void screen_update_area()
 422 {
 423     guint i;
 424     gulong *dims;
 425
 426     if (area != NULL)
 427         g_free(area);
 428     area = g_new0(Rect, screen_num_desktops + 1);
 429
 430     dims = g_new(unsigned long, 4 * screen_num_desktops);
 431     for (i = 0; i < screen_num_desktops + 1; ++i) {
 432         Rect old_area = area[i];
 433 /*
 434   #ifdef    XINERAMA
 435   // reset to the full areas
 436   if (isXineramaActive())
 437   xineramaUsableArea = getXineramaAreas();
 438   #endif // XINERAMA
 439 */
 440
 441         RECT_SET(area[i], strut[i].left, strut[i].top,
 442                  screen_physical_size.width - (strut[i].left +
 443                                                strut[i].right),
 444                  screen_physical_size.height - (strut[i].top +
 445                                                 strut[i].bottom));
 446
 447 /*
 448   #ifdef    XINERAMA
 449   if (isXineramaActive()) {
 450   // keep each of the ximerama-defined areas inside the strut
 451   RectList::iterator xit, xend = xineramaUsableArea.end();
 452   for (xit = xineramaUsableArea.begin(); xit != xend; ++xit) {
 453   if (xit->x() < usableArea.x()) {
 454   xit->setX(usableArea.x());
 455   xit->setWidth(xit->width() - usableArea.x());
 456   }
 457   if (xit->y() < usableArea.y()) {
 458   xit->setY(usableArea.y());
 459   xit->setHeight(xit->height() - usableArea.y());
 460   }
 461   if (xit->x() + xit->width() > usableArea.width())
 462   xit->setWidth(usableArea.width() - xit->x());
 463   if (xit->y() + xit->height() > usableArea.height())
 464   xit->setHeight(usableArea.height() - xit->y());
 465   }
 466   }
 467   #endif // XINERAMA
 468 */
 469         if (!RECT_EQUAL(old_area, area[i])) {
 470             /* the area has changed, adjust all the maximized windows */
 471             GSList *it;
 472             for (it = client_list; it; it = it->next) {
 473                 Client *c = it->data;
 474                 if (i < screen_num_desktops) {
 475                     if (c->desktop == i)
 476                         client_remaximize(c);
 477                 } else {
 478                     /* the 'all desktops' size */
 479                     if (c->desktop == DESKTOP_ALL)
 480                         client_remaximize(c);
 481                 }
 482             }
 483         }
 484
 485         /* don't set these for the 'all desktops' area */
 486         if (i < screen_num_desktops) {
 487             dims[(i * 4) + 0] = area[i].x;
 488             dims[(i * 4) + 1] = area[i].y;
 489             dims[(i * 4) + 2] = area[i].width;
 490             dims[(i * 4) + 3] = area[i].height;
 491         }
 492     }
 493     PROP_SET32A(ob_root, net_workarea, cardinal,
 494                 dims, 4 * screen_num_desktops);
 495     g_free(dims);
 496 }
 497
 498 Rect *screen_area(guint desktop)
 499 {
 500     if (desktop >= screen_num_desktops) {
 501         if (desktop == DESKTOP_ALL)
 502             return &area[screen_num_desktops];
 503         return NULL;
 504     }
 505     return &area[desktop];
 506 }
 507
 508 Strut *screen_strut(guint desktop)
 509 {
 510     if (desktop >= screen_num_desktops) {
 511         if (desktop == DESKTOP_ALL)
 512             return &strut[screen_num_desktops];
 513         return NULL;
 514     }
 515     return &strut[desktop];
 516 }