openbox/screen.c

   1 #include "openbox.h"
   2 #include "prop.h"
   3 #include "screen.h"
   4 #include "client.h"
   5 #include "frame.h"
   6 #include "engine.h"
   7 #include "focus.h"
   8
   9 #include <X11/Xlib.h>
  10 #ifdef HAVE_UNISTD_H
  11 #  include <sys/types.h>
  12 #  include <unistd.h>
  13 #endif
  14
  15 /*! The event mask to grab on the root window */
  16 #define ROOT_EVENTMASK (/*ColormapChangeMask |*/ PropertyChangeMask | \
  17                         EnterWindowMask | LeaveWindowMask | \
  18                         SubstructureNotifyMask | SubstructureRedirectMask | \
  19                         ButtonPressMask | ButtonReleaseMask | ButtonMotionMask)
  20
  21 guint    screen_num_desktops    = 1;
  22 guint    screen_desktop         = 0;
  23 Size     screen_physical_size;
  24 gboolean screen_showing_desktop;
  25 DesktopLayout screen_desktop_layout;
  26 GPtrArray *screen_desktop_names;
  27
  28 static Rect  *area = NULL;
  29 static Strut *strut = NULL;
  30
  31 static void screen_update_area();
  32
  33 static gboolean running;
  34 static int another_running(Display *d, XErrorEvent *e)
  35 {
  36     (void)d;(void)e;
  37     g_message("A window manager is already running on screen %d",
  38               ob_screen);
  39     running = TRUE;
  40     return -1;
  41 }
  42
  43 gboolean screen_annex()
  44 {
  45     XErrorHandler old;
  46     Window support;
  47     pid_t pid;
  48     int i, num_support;
  49     Atom *supported;
  50
  51     running = FALSE;
  52     old = XSetErrorHandler(another_running);
  53     XSelectInput(ob_display, ob_root, ROOT_EVENTMASK);
  54     XSync(ob_display, FALSE);
  55     XSetErrorHandler(old);
  56     if (running)
  57         return FALSE;
  58
  59     g_message("Managing screen %d", ob_screen);
  60
  61     /* set the mouse cursor for the root window (the default cursor) */
  62     XDefineCursor(ob_display, ob_root, ob_cursors.left_ptr);
  63
  64     /* set the OPENBOX_PID hint */
  65     pid = getpid();
  66     PROP_SET32(ob_root, openbox_pid, cardinal, pid);
  67
  68     /* create the netwm support window */
  69     support = XCreateSimpleWindow(ob_display, ob_root, 0, 0, 1, 1, 0, 0, 0);
  70
  71     /* set supporting window */
  72     PROP_SET32(ob_root, net_supporting_wm_check, window, support);
  73
  74     /* set properties on the supporting window */
  75     PROP_SETS(support, net_wm_name, utf8, "Openbox");
  76     PROP_SET32(support, net_supporting_wm_check, window, support);
  77
  78     /* set the _NET_SUPPORTED_ATOMS hint */
  79     num_support = 48;
  80     i = 0;
  81     supported = g_new(Atom, num_support);
  82     supported[i++] = prop_atoms.net_current_desktop;
  83     supported[i++] = prop_atoms.net_number_of_desktops;
  84     supported[i++] = prop_atoms.net_desktop_geometry;
  85     supported[i++] = prop_atoms.net_desktop_viewport;
  86     supported[i++] = prop_atoms.net_active_window;
  87     supported[i++] = prop_atoms.net_workarea;
  88     supported[i++] = prop_atoms.net_client_list;
  89     supported[i++] = prop_atoms.net_client_list_stacking;
  90     supported[i++] = prop_atoms.net_desktop_names;
  91     supported[i++] = prop_atoms.net_close_window;
  92     supported[i++] = prop_atoms.net_desktop_layout;
  93     supported[i++] = prop_atoms.net_showing_desktop;
  94     supported[i++] = prop_atoms.net_wm_name;
  95     supported[i++] = prop_atoms.net_wm_visible_name;
  96     supported[i++] = prop_atoms.net_wm_icon_name;
  97     supported[i++] = prop_atoms.net_wm_visible_icon_name;
  98     supported[i++] = prop_atoms.net_wm_desktop;
  99     supported[i++] = prop_atoms.net_wm_strut;
 100     supported[i++] = prop_atoms.net_wm_window_type;
 101     supported[i++] = prop_atoms.net_wm_window_type_desktop;
 102     supported[i++] = prop_atoms.net_wm_window_type_dock;
 103     supported[i++] = prop_atoms.net_wm_window_type_toolbar;
 104     supported[i++] = prop_atoms.net_wm_window_type_menu;
 105     supported[i++] = prop_atoms.net_wm_window_type_utility;
 106     supported[i++] = prop_atoms.net_wm_window_type_splash;
 107     supported[i++] = prop_atoms.net_wm_window_type_dialog;
 108     supported[i++] = prop_atoms.net_wm_window_type_normal;
 109     supported[i++] = prop_atoms.net_wm_allowed_actions;
 110     supported[i++] = prop_atoms.net_wm_action_move;
 111     supported[i++] = prop_atoms.net_wm_action_resize;
 112     supported[i++] = prop_atoms.net_wm_action_minimize;
 113     supported[i++] = prop_atoms.net_wm_action_shade;
 114     supported[i++] = prop_atoms.net_wm_action_maximize_horz;
 115     supported[i++] = prop_atoms.net_wm_action_maximize_vert;
 116     supported[i++] = prop_atoms.net_wm_action_fullscreen;
 117     supported[i++] = prop_atoms.net_wm_action_change_desktop;
 118     supported[i++] = prop_atoms.net_wm_action_close;
 119     supported[i++] = prop_atoms.net_wm_state;
 120     supported[i++] = prop_atoms.net_wm_state_modal;
 121     supported[i++] = prop_atoms.net_wm_state_maximized_vert;
 122     supported[i++] = prop_atoms.net_wm_state_maximized_horz;
 123     supported[i++] = prop_atoms.net_wm_state_shaded;
 124     supported[i++] = prop_atoms.net_wm_state_skip_taskbar;
 125     supported[i++] = prop_atoms.net_wm_state_skip_pager;
 126     supported[i++] = prop_atoms.net_wm_state_hidden;
 127     supported[i++] = prop_atoms.net_wm_state_fullscreen;
 128     supported[i++] = prop_atoms.net_wm_state_above;
 129     supported[i++] = prop_atoms.net_wm_state_below;
 130     g_assert(i == num_support);
 131 /*
 132   supported[] = prop_atoms.net_wm_moveresize;
 133   supported[] = prop_atoms.net_wm_moveresize_size_topleft;
 134   supported[] = prop_atoms.net_wm_moveresize_size_topright;
 135   supported[] = prop_atoms.net_wm_moveresize_size_bottomleft;
 136   supported[] = prop_atoms.net_wm_moveresize_size_bottomright;
 137   supported[] = prop_atoms.net_wm_moveresize_move;
 138   supported[] = prop_atoms.net_wm_action_stick;
 139 */
 140
 141     PROP_SET32A(ob_root, net_supported, atom, supported, num_support);
 142     g_free(supported);
 143
 144     return TRUE;
 145 }
 146
 147 void screen_startup()
 148 {
 149     screen_desktop_names = g_ptr_array_new();
 150
 151     /* get the initial size */
 152     screen_resize();
 153
 154     screen_set_num_desktops(4);
 155     screen_set_desktop(0);
 156
 157     /* don't start in showing-desktop mode */
 158     screen_showing_desktop = FALSE;
 159     PROP_SET32(ob_root, net_showing_desktop, cardinal, screen_showing_desktop);
 160
 161     screen_update_layout();
 162 }
 163
 164 void screen_shutdown()
 165 {
 166     guint i;
 167     for (i = 0; i < screen_desktop_names->len; ++i)
 168         g_free(g_ptr_array_index(screen_desktop_names, i));
 169     g_ptr_array_free(screen_desktop_names, TRUE);
 170     g_free(strut);
 171     g_free(area);
 172 }
 173
 174 void screen_resize()
 175 {
 176     /* Set the _NET_DESKTOP_GEOMETRY hint */
 177     /* XXX RandR support here? */
 178     int geometry[2];
 179
 180     geometry[0] = WidthOfScreen(ScreenOfDisplay(ob_display, ob_screen));
 181     geometry[1] = HeightOfScreen(ScreenOfDisplay(ob_display, ob_screen));
 182     PROP_SET32A(ob_root, net_desktop_geometry, cardinal, geometry, 2);
 183     screen_physical_size.width = geometry[0];
 184     screen_physical_size.height = geometry[1];
 185
 186     if (ob_state == State_Starting)
 187         return;
 188
 189     screen_update_struts();
 190
 191     /* XXX adjust more stuff ? */
 192 }
 193
 194 void screen_set_num_desktops(guint num)
 195 {
 196     unsigned long *viewport;
 197
 198     g_assert(num > 0);
 199
 200     /* move windows on desktops that will no longer exist! */
 201     /* XXX
 202        std::list<Client*>::iterator it, end = clients.end();
 203        for (it = clients.begin(); it != end; ++it) {
 204        unsigned int d = (*it)->desktop();
 205        if (d >= num && d != 0xffffffff) {
 206        XEvent ce;
 207        ce.xclient.type = ClientMessage;
 208        ce.xclient.message_type = otk::Property::atoms.net_wm_desktop;
 209        ce.xclient.display = **otk::display;
 210        ce.xclient.window = (*it)->window();
 211        ce.xclient.format = 32;
 212        ce.xclient.data.l[0] = num - 1;
 213        XSendEvent(**otk::display, _info->rootWindow(), false,
 214        SubstructureNotifyMask | SubstructureRedirectMask, &ce);
 215        }
 216        }
 217     */
 218
 219     screen_num_desktops = num;
 220     PROP_SET32(ob_root, net_number_of_desktops, cardinal, num);
 221
 222     /* set the viewport hint */
 223     viewport = g_new0(unsigned long, num * 2);
 224     PROP_SET32A(ob_root, net_desktop_viewport, cardinal, viewport, num * 2);
 225     g_free(viewport);
 226
 227     /* change our struts/area to match */
 228     screen_update_struts();
 229
 230     /* the number of rows/columns will differ */
 231     screen_update_layout();
 232
 233     /* may be some unnamed desktops that we need to fill in with names */
 234     screen_update_desktop_names();
 235
 236     /* change our desktop if we're on one that no longer exists! */
 237     if (screen_desktop >= screen_num_desktops)
 238         screen_set_desktop(num - 1);
 239 }
 240
 241 void screen_set_desktop(guint num)
 242 {
 243     GList *it;
 244
 245     guint old = screen_desktop;
 246
 247     g_assert(num < screen_num_desktops);
 248
 249     g_message("Moving to desktop %u", num);
 250
 251     screen_desktop = num;
 252     PROP_SET32(ob_root, net_current_desktop, cardinal, num);
 253
 254     if (old == num) return;
 255
 256     /* hide windows from bottom to top */
 257     for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 258         Client *c = it->data;
 259         if (c->frame->visible && !client_should_show(c))
 260             engine_frame_hide(c->frame);
 261     }
 262
 263     /* show windows from top to bottom */
 264     for (it = stacking_list; it != NULL; it = it->next) {
 265         Client *c = it->data;
 266         if (!c->frame->visible && client_should_show(c))
 267             engine_frame_show(c->frame);
 268     }
 269
 270     /* force the callbacks to fire */
 271     if (focus_client == NULL)
 272         focus_set_client(NULL);
 273 }
 274
 275 void screen_update_layout()
 276 {
 277     unsigned long *data = NULL;
 278
 279     /* defaults */
 280     screen_desktop_layout.orientation = prop_atoms.net_wm_orientation_horz;
 281     screen_desktop_layout.start_corner = prop_atoms.net_wm_topleft;
 282     screen_desktop_layout.rows = 1;
 283     screen_desktop_layout.columns = screen_num_desktops;
 284
 285     if (PROP_GET32A(ob_root, net_desktop_layout, cardinal, data, 4)) {
 286         if (data[0] == prop_atoms.net_wm_orientation_vert)
 287             screen_desktop_layout.orientation = data[0];
 288         if (data[3] == prop_atoms.net_wm_topright)
 289             screen_desktop_layout.start_corner = data[3];
 290         else if (data[3] == prop_atoms.net_wm_bottomright)
 291             screen_desktop_layout.start_corner = data[3];
 292         else if (data[3] == prop_atoms.net_wm_bottomleft)
 293             screen_desktop_layout.start_corner = data[3];
 294
 295         /* fill in a zero rows/columns */
 296         if (!(data[1] == 0 && data[2] == 0)) { /* both 0's is bad data.. */
 297             if (data[1] == 0) {
 298                 data[1] = (screen_num_desktops +
 299                            screen_num_desktops % data[2]) / data[2];
 300             } else if (data[2] == 0) {
 301                 data[2] = (screen_num_desktops +
 302                            screen_num_desktops % data[1]) / data[1];
 303             }
 304             screen_desktop_layout.columns = data[1];
 305             screen_desktop_layout.rows = data[2];
 306         }
 307
 308         /* bounds checking */
 309         if (screen_desktop_layout.orientation ==
 310             prop_atoms.net_wm_orientation_horz) {
 311             if (screen_desktop_layout.rows > screen_num_desktops)
 312                 screen_desktop_layout.rows = screen_num_desktops;
 313             if (screen_desktop_layout.columns > ((screen_num_desktops +
 314                                                   screen_num_desktops %
 315                                                   screen_desktop_layout.rows) /
 316                                                  screen_desktop_layout.rows))
 317                 screen_desktop_layout.columns =
 318                     (screen_num_desktops + screen_num_desktops %
 319                      screen_desktop_layout.rows) /
 320                     screen_desktop_layout.rows;
 321         } else {
 322             if (screen_desktop_layout.columns > screen_num_desktops)
 323                 screen_desktop_layout.columns = screen_num_desktops;
 324             if (screen_desktop_layout.rows > ((screen_num_desktops +
 325                                                screen_num_desktops %
 326                                                screen_desktop_layout.columns) /
 327                                               screen_desktop_layout.columns))
 328                 screen_desktop_layout.rows =
 329                     (screen_num_desktops + screen_num_desktops %
 330                      screen_desktop_layout.columns) /
 331                     screen_desktop_layout.columns;
 332         }
 333         g_free(data);
 334     }
 335 }
 336
 337 void screen_update_desktop_names()
 338 {
 339     guint i;
 340
 341     /* empty the array */
 342     for (i = 0; i < screen_desktop_names->len; ++i)
 343         g_free(g_ptr_array_index(screen_desktop_names, i));
 344     g_ptr_array_set_size(screen_desktop_names, 0);
 345
 346     PROP_GETSA(ob_root, net_desktop_names, utf8, screen_desktop_names);
 347
 348     while (screen_desktop_names->len < screen_num_desktops)
 349         g_ptr_array_add(screen_desktop_names, g_strdup("Unnamed Desktop"));
 350 }
 351
 352 void screen_show_desktop(gboolean show)
 353 {
 354     GList *it;
 355     static Window saved_focus = 0;
 356
 357     if (show == screen_showing_desktop) return; /* no change */
 358
 359     /* save the window focus, and restore it when leaving the show-desktop
 360        mode */
 361     if (show && focus_client)
 362         saved_focus = focus_client->window;
 363
 364     screen_showing_desktop = show;
 365
 366     if (show) {
 367         /* bottom to top */
 368         for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 369             Client *client = it->data;
 370             if (client->type == Type_Desktop)
 371                 client_focus(client);
 372             else if (client->frame->visible && !client_should_show(client))
 373                 engine_frame_hide(client->frame);
 374         }
 375     } else {
 376         /* top to bottom */
 377         for (it = stacking_list; it != NULL; it = it->next) {
 378             Client *client = it->data;
 379             if (!client->frame->visible && client_should_show(client))
 380                 engine_frame_show(client->frame);
 381         }
 382     }
 383
 384     if (!show) {
 385         Client *f = focus_client;
 386         if (!f || f->type == Type_Desktop) {
 387             Client *c = g_hash_table_lookup(client_map,
 388                                             (gpointer)saved_focus);
 389             if (c) client_focus(c);
 390         }
 391     }
 392
 393     show = show ? 1 : 0; /* make it boolean */
 394     PROP_SET32(ob_root, net_showing_desktop, cardinal, show);
 395 }
 396
 397 void screen_install_colormap(Client *client, gboolean install)
 398 {
 399     if (client == NULL) {
 400         /* XXX DONT USE THE DEFAULT SHIT HERE */
 401         if (install)
 402             XInstallColormap(ob_display,
 403                              DefaultColormap(ob_display, ob_screen));
 404         else
 405             XUninstallColormap(ob_display,
 406                                DefaultColormap(ob_display, ob_screen));
 407     } else {
 408         XWindowAttributes wa;
 409         if (XGetWindowAttributes(ob_display, client->window, &wa)) {
 410             if (install)
 411                 XInstallColormap(ob_display, wa.colormap);
 412             else
 413                 XUninstallColormap(ob_display, wa.colormap);
 414         }
 415     }
 416 }
 417
 418 void screen_update_struts()
 419 {
 420     GSList *it;
 421     guint i;
 422
 423     if (strut != NULL)
 424         g_free(strut);
 425     strut = g_new0(Strut, screen_num_desktops + 1);
 426
 427     for (it = client_list; it; it = it->next) {
 428         Client *c = it->data;
 429         if (c->iconic) continue; /* these dont count in the strut */
 430
 431         if (c->desktop == 0xffffffff) {
 432             for (i = 0; i < screen_num_desktops; ++i)
 433                 STRUT_ADD(strut[i], c->strut);
 434         } else {
 435             g_assert(c->desktop < screen_num_desktops);
 436             STRUT_ADD(strut[c->desktop], c->strut);
 437         }
 438         /* apply to the 'all desktops' strut */
 439         STRUT_ADD(strut[screen_num_desktops], c->strut);
 440     }
 441     screen_update_area();
 442 }
 443
 444 static void screen_update_area()
 445 {
 446     guint i;
 447     gulong *dims;
 448
 449     if (area != NULL)
 450         g_free(area);
 451     area = g_new0(Rect, screen_num_desktops + 1);
 452
 453     dims = g_new(unsigned long, 4 * screen_num_desktops);
 454     for (i = 0; i < screen_num_desktops + 1; ++i) {
 455         Rect old_area = area[i];
 456 /*
 457   #ifdef    XINERAMA
 458   // reset to the full areas
 459   if (isXineramaActive())
 460   xineramaUsableArea = getXineramaAreas();
 461   #endif // XINERAMA
 462 */
 463
 464         RECT_SET(area[i], strut[i].left, strut[i].top,
 465                  screen_physical_size.width - (strut[i].left +
 466                                                strut[i].right),
 467                  screen_physical_size.height - (strut[i].top +
 468                                                 strut[i].bottom));
 469
 470 /*
 471   #ifdef    XINERAMA
 472   if (isXineramaActive()) {
 473   // keep each of the ximerama-defined areas inside the strut
 474   RectList::iterator xit, xend = xineramaUsableArea.end();
 475   for (xit = xineramaUsableArea.begin(); xit != xend; ++xit) {
 476   if (xit->x() < usableArea.x()) {
 477   xit->setX(usableArea.x());
 478   xit->setWidth(xit->width() - usableArea.x());
 479   }
 480   if (xit->y() < usableArea.y()) {
 481   xit->setY(usableArea.y());
 482   xit->setHeight(xit->height() - usableArea.y());
 483   }
 484   if (xit->x() + xit->width() > usableArea.width())
 485   xit->setWidth(usableArea.width() - xit->x());
 486   if (xit->y() + xit->height() > usableArea.height())
 487   xit->setHeight(usableArea.height() - xit->y());
 488   }
 489   }
 490   #endif // XINERAMA
 491 */
 492         if (!RECT_EQUAL(old_area, area[i])) {
 493             /* the area has changed, adjust all the maximized windows */
 494             GSList *it;
 495             for (it = client_list; it; it = it->next) {
 496                 Client *c = it->data;
 497                 if (i < screen_num_desktops) {
 498                     if (c->desktop == i)
 499                         client_remaximize(c);
 500                 } else {
 501                     /* the 'all desktops' size */
 502                     if (c->desktop == DESKTOP_ALL)
 503                         client_remaximize(c);
 504                 }
 505             }
 506         }
 507
 508         /* don't set these for the 'all desktops' area */
 509         if (i < screen_num_desktops) {
 510             dims[(i * 4) + 0] = area[i].x;
 511             dims[(i * 4) + 1] = area[i].y;
 512             dims[(i * 4) + 2] = area[i].width;
 513             dims[(i * 4) + 3] = area[i].height;
 514         }
 515     }
 516     PROP_SET32A(ob_root, net_workarea, cardinal,
 517                 dims, 4 * screen_num_desktops);
 518     g_free(dims);
 519 }
 520
 521 Rect *screen_area(guint desktop)
 522 {
 523     if (desktop >= screen_num_desktops) {
 524         if (desktop == DESKTOP_ALL)
 525             return &area[screen_num_desktops];
 526         return NULL;
 527     }
 528     return &area[desktop];
 529 }
 530
 531 Strut *screen_strut(guint desktop)
 532 {
 533     if (desktop >= screen_num_desktops) {
 534         if (desktop == DESKTOP_ALL)
 535             return &strut[screen_num_desktops];
 536         return NULL;
 537     }
 538     return &strut[desktop];
 539 }