openbox/screen.c

   1 #include "openbox.h"
   2 #include "prop.h"
   3 #include "config.h"
   4 #include "screen.h"
   5 #include "client.h"
   6 #include "frame.h"
   7 #include "focus.h"
   8 #include "dispatch.h"
   9 #include "../render/render.h"
  10
  11 #include <X11/Xlib.h>
  12 #ifdef HAVE_UNISTD_H
  13 #  include <sys/types.h>
  14 #  include <unistd.h>
  15 #endif
  16
  17 /*! The event mask to grab on the root window */
  18 #define ROOT_EVENTMASK (/*ColormapChangeMask |*/ PropertyChangeMask | \
  19                         EnterWindowMask | LeaveWindowMask | \
  20                         SubstructureNotifyMask | SubstructureRedirectMask | \
  21                         ButtonPressMask | ButtonReleaseMask | ButtonMotionMask)
  22
  23 guint    screen_num_desktops    = 0;
  24 guint    screen_desktop         = 0;
  25 Size     screen_physical_size;
  26 gboolean screen_showing_desktop;
  27 DesktopLayout screen_desktop_layout;
  28 char   **screen_desktop_names = NULL;
  29
  30 static Rect  *area = NULL;
  31 static Strut *strut = NULL;
  32 static Window support_window = None;
  33
  34 static void screen_update_area();
  35
  36 static gboolean running;
  37 static int another_running(Display *d, XErrorEvent *e)
  38 {
  39     (void)d;(void)e;
  40     g_message("A window manager is already running on screen %d",
  41               ob_screen);
  42     running = TRUE;
  43     return -1;
  44 }
  45
  46 gboolean screen_annex()
  47 {
  48     XErrorHandler old;
  49     pid_t pid;
  50     int i, num_support;
  51     guint32 *supported;
  52
  53     running = FALSE;
  54     old = XSetErrorHandler(another_running);
  55     XSelectInput(ob_display, ob_root, ROOT_EVENTMASK);
  56     XSync(ob_display, FALSE);
  57     XSetErrorHandler(old);
  58     if (running)
  59         return FALSE;
  60
  61     g_message("Managing screen %d", ob_screen);
  62
  63     /* set the mouse cursor for the root window (the default cursor) */
  64     XDefineCursor(ob_display, ob_root, ob_cursors.ptr);
  65
  66     /* set the OPENBOX_PID hint */
  67     pid = getpid();
  68     PROP_SET32(ob_root, openbox_pid, cardinal, pid);
  69
  70     /* create the netwm support window */
  71     support_window = XCreateSimpleWindow(ob_display, ob_root, 0,0,1,1,0,0,0);
  72
  73     /* set supporting window */
  74     PROP_SET32(ob_root, net_supporting_wm_check, window, support_window);
  75
  76     /* set properties on the supporting window */
  77     PROP_SETS(support_window, net_wm_name, "Openbox");
  78     PROP_SET32(support_window, net_supporting_wm_check, window,support_window);
  79
  80     /* set the _NET_SUPPORTED_ATOMS hint */
  81     num_support = 61;
  82     i = 0;
  83     supported = g_new(guint32, num_support);
  84     supported[i++] = prop_atoms.net_current_desktop;
  85     supported[i++] = prop_atoms.net_number_of_desktops;
  86     supported[i++] = prop_atoms.net_desktop_geometry;
  87     supported[i++] = prop_atoms.net_desktop_viewport;
  88     supported[i++] = prop_atoms.net_active_window;
  89     supported[i++] = prop_atoms.net_workarea;
  90     supported[i++] = prop_atoms.net_client_list;
  91     supported[i++] = prop_atoms.net_client_list_stacking;
  92     supported[i++] = prop_atoms.net_desktop_names;
  93     supported[i++] = prop_atoms.net_close_window;
  94     supported[i++] = prop_atoms.net_desktop_layout;
  95     supported[i++] = prop_atoms.net_showing_desktop;
  96     supported[i++] = prop_atoms.net_wm_name;
  97     supported[i++] = prop_atoms.net_wm_visible_name;
  98     supported[i++] = prop_atoms.net_wm_icon_name;
  99     supported[i++] = prop_atoms.net_wm_visible_icon_name;
 100     supported[i++] = prop_atoms.net_wm_desktop;
 101     supported[i++] = prop_atoms.net_wm_strut;
 102     supported[i++] = prop_atoms.net_wm_window_type;
 103     supported[i++] = prop_atoms.net_wm_window_type_desktop;
 104     supported[i++] = prop_atoms.net_wm_window_type_dock;
 105     supported[i++] = prop_atoms.net_wm_window_type_toolbar;
 106     supported[i++] = prop_atoms.net_wm_window_type_menu;
 107     supported[i++] = prop_atoms.net_wm_window_type_utility;
 108     supported[i++] = prop_atoms.net_wm_window_type_splash;
 109     supported[i++] = prop_atoms.net_wm_window_type_dialog;
 110     supported[i++] = prop_atoms.net_wm_window_type_normal;
 111     supported[i++] = prop_atoms.net_wm_allowed_actions;
 112     supported[i++] = prop_atoms.net_wm_action_move;
 113     supported[i++] = prop_atoms.net_wm_action_resize;
 114     supported[i++] = prop_atoms.net_wm_action_minimize;
 115     supported[i++] = prop_atoms.net_wm_action_shade;
 116     supported[i++] = prop_atoms.net_wm_action_maximize_horz;
 117     supported[i++] = prop_atoms.net_wm_action_maximize_vert;
 118     supported[i++] = prop_atoms.net_wm_action_fullscreen;
 119     supported[i++] = prop_atoms.net_wm_action_change_desktop;
 120     supported[i++] = prop_atoms.net_wm_action_close;
 121     supported[i++] = prop_atoms.net_wm_state;
 122     supported[i++] = prop_atoms.net_wm_state_modal;
 123     supported[i++] = prop_atoms.net_wm_state_maximized_vert;
 124     supported[i++] = prop_atoms.net_wm_state_maximized_horz;
 125     supported[i++] = prop_atoms.net_wm_state_shaded;
 126     supported[i++] = prop_atoms.net_wm_state_skip_taskbar;
 127     supported[i++] = prop_atoms.net_wm_state_skip_pager;
 128     supported[i++] = prop_atoms.net_wm_state_hidden;
 129     supported[i++] = prop_atoms.net_wm_state_fullscreen;
 130     supported[i++] = prop_atoms.net_wm_state_above;
 131     supported[i++] = prop_atoms.net_wm_state_below;
 132     supported[i++] = prop_atoms.net_moveresize_window;
 133     supported[i++] = prop_atoms.net_wm_moveresize;
 134     supported[i++] = prop_atoms.net_wm_moveresize_size_topleft;
 135     supported[i++] = prop_atoms.net_wm_moveresize_size_top;
 136     supported[i++] = prop_atoms.net_wm_moveresize_size_topright;
 137     supported[i++] = prop_atoms.net_wm_moveresize_size_right;
 138     supported[i++] = prop_atoms.net_wm_moveresize_size_bottomright;
 139     supported[i++] = prop_atoms.net_wm_moveresize_size_bottom;
 140     supported[i++] = prop_atoms.net_wm_moveresize_size_bottomleft;
 141     supported[i++] = prop_atoms.net_wm_moveresize_size_left;
 142     supported[i++] = prop_atoms.net_wm_moveresize_move;
 143     supported[i++] = prop_atoms.net_wm_moveresize_size_keyboard;
 144     supported[i++] = prop_atoms.net_wm_moveresize_move_keyboard;
 145     g_assert(i == num_support);
 146 /*
 147   supported[] = prop_atoms.net_wm_action_stick;
 148 */
 149
 150     PROP_SETA32(ob_root, net_supported, atom, supported, num_support);
 151     g_free(supported);
 152
 153     return TRUE;
 154 }
 155
 156 void screen_startup()
 157 {
 158     GSList *it;
 159     guint i;
 160
 161     /* get the initial size */
 162     screen_resize();
 163
 164     /* set the names */
 165     screen_desktop_names = g_new(char*,
 166                                  g_slist_length(config_desktops_names) + 1);
 167     for (i = 0, it = config_desktops_names; it; ++i, it = it->next)
 168         screen_desktop_names[i] = it->data; /* dont strdup */
 169     screen_desktop_names[i] = NULL;
 170     PROP_SETSS(ob_root, net_desktop_names, screen_desktop_names);
 171     g_free(screen_desktop_names); /* dont free the individual strings */
 172     screen_desktop_names = NULL;
 173
 174     screen_num_desktops = 0;
 175     screen_set_num_desktops(config_desktops_num);
 176     screen_desktop = 0;
 177     screen_set_desktop(0);
 178
 179     /* don't start in showing-desktop mode */
 180     screen_showing_desktop = FALSE;
 181     PROP_SET32(ob_root, net_showing_desktop, cardinal, screen_showing_desktop);
 182
 183     screen_update_layout();
 184 }
 185
 186 void screen_shutdown()
 187 {
 188     XSelectInput(ob_display, ob_root, NoEventMask);
 189
 190     PROP_ERASE(ob_root, openbox_pid); /* we're not running here no more! */
 191     PROP_ERASE(ob_root, net_supported); /* not without us */
 192     PROP_ERASE(ob_root, net_showing_desktop); /* don't keep this mode */
 193
 194     XDestroyWindow(ob_display, support_window);
 195
 196     g_strfreev(screen_desktop_names);
 197     g_free(strut);
 198     g_free(area);
 199 }
 200
 201 void screen_resize()
 202 {
 203     /* XXX RandR support here? */
 204     guint32 geometry[2];
 205
 206     /* Set the _NET_DESKTOP_GEOMETRY hint */
 207     geometry[0] = WidthOfScreen(ScreenOfDisplay(ob_display, ob_screen));
 208     geometry[1] = HeightOfScreen(ScreenOfDisplay(ob_display, ob_screen));
 209     PROP_SETA32(ob_root, net_desktop_geometry, cardinal, geometry, 2);
 210     screen_physical_size.width = geometry[0];
 211     screen_physical_size.height = geometry[1];
 212
 213     if (ob_state == State_Starting)
 214         return;
 215
 216     screen_update_struts();
 217
 218     /* XXX adjust more stuff ? */
 219 }
 220
 221 void screen_set_num_desktops(guint num)
 222 {
 223     guint i, old;
 224     guint32 *viewport;
 225     GList *it;
 226
 227     g_assert(num > 0);
 228
 229     old = screen_num_desktops;
 230     screen_num_desktops = num;
 231     PROP_SET32(ob_root, net_number_of_desktops, cardinal, num);
 232
 233     /* set the viewport hint */
 234     viewport = g_new0(guint32, num * 2);
 235     PROP_SETA32(ob_root, net_desktop_viewport, cardinal, viewport, num * 2);
 236     g_free(viewport);
 237
 238     /* change our struts/area to match */
 239     screen_update_struts();
 240
 241     /* the number of rows/columns will differ */
 242     screen_update_layout();
 243
 244     /* may be some unnamed desktops that we need to fill in with names */
 245     screen_update_desktop_names();
 246
 247     /* update the focus lists */
 248     /* free our lists for the desktops which have disappeared */
 249     for (i = num; i < old; ++i)
 250         g_list_free(focus_order[i]);
 251     /* realloc the array */
 252     focus_order = g_renew(GList*, focus_order, num);
 253     /* set the new lists to be empty */
 254     for (i = old; i < num; ++i)
 255         focus_order[i] = NULL;
 256
 257     /* move windows on desktops that will no longer exist! */
 258     for (it = client_list; it != NULL; it = it->next) {
 259         Client *c = it->data;
 260         if (c->desktop >= num)
 261             client_set_desktop(c, num - 1, FALSE);
 262     }
 263
 264     dispatch_ob(Event_Ob_NumDesktops, num, old);
 265
 266     /* change our desktop if we're on one that no longer exists! */
 267     if (screen_desktop >= screen_num_desktops)
 268         screen_set_desktop(num - 1);
 269 }
 270
 271 void screen_set_desktop(guint num)
 272 {
 273     GList *it;
 274     guint old;
 275     XEvent e;
 276
 277     g_assert(num < screen_num_desktops);
 278
 279     old = screen_desktop;
 280     screen_desktop = num;
 281     PROP_SET32(ob_root, net_current_desktop, cardinal, num);
 282
 283     if (old == num) return;
 284
 285     g_message("Moving to desktop %d", num+1);
 286
 287     /* show windows before hiding the rest to lessen the enter/leave events */
 288
 289     /* show windows from top to bottom */
 290     for (it = stacking_list; it != NULL; it = it->next) {
 291         Client *c = it->data;
 292         if (!c->frame->visible && client_should_show(c))
 293             frame_show(c->frame);
 294     }
 295
 296     /* hide windows from bottom to top */
 297     for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 298         Client *c = it->data;
 299         if (c->frame->visible && !client_should_show(c))
 300             frame_hide(c->frame);
 301     }
 302
 303     /* focus the last focused window on the desktop, and ignore enter events
 304        from the switch so it doesnt mess with the focus */
 305     while (XCheckTypedEvent(ob_display, EnterNotify, &e));
 306     focus_fallback(Fallback_Desktop);
 307
 308     dispatch_ob(Event_Ob_Desktop, num, old);
 309 }
 310
 311 void screen_update_layout()
 312 {
 313     guint32 *data = NULL;
 314     guint num;
 315
 316     /* defaults */
 317     screen_desktop_layout.orientation = prop_atoms.net_wm_orientation_horz;
 318     screen_desktop_layout.start_corner = prop_atoms.net_wm_topleft;
 319     screen_desktop_layout.rows = 1;
 320     screen_desktop_layout.columns = screen_num_desktops;
 321
 322     if (PROP_GETA32(ob_root, net_desktop_layout, cardinal, &data, &num)) {
 323         if (num == 3 || num == 4) {
 324             if (data[0] == prop_atoms.net_wm_orientation_vert)
 325                 screen_desktop_layout.orientation = data[0];
 326             if (num == 3)
 327                 screen_desktop_layout.start_corner =
 328                     prop_atoms.net_wm_topright;
 329             else {
 330                 if (data[3] == prop_atoms.net_wm_topright)
 331                     screen_desktop_layout.start_corner = data[3];
 332                 else if (data[3] == prop_atoms.net_wm_bottomright)
 333                     screen_desktop_layout.start_corner = data[3];
 334                 else if (data[3] == prop_atoms.net_wm_bottomleft)
 335                     screen_desktop_layout.start_corner = data[3];
 336             }
 337
 338             /* fill in a zero rows/columns */
 339             if (!(data[1] == 0 && data[2] == 0)) { /* both 0's is bad data.. */
 340                 if (data[1] == 0) {
 341                     data[1] = (screen_num_desktops +
 342                                screen_num_desktops % data[2]) / data[2];
 343                 } else if (data[2] == 0) {
 344                     data[2] = (screen_num_desktops +
 345                                screen_num_desktops % data[1]) / data[1];
 346                 }
 347                 screen_desktop_layout.columns = data[1];
 348                 screen_desktop_layout.rows = data[2];
 349             }
 350
 351             /* bounds checking */
 352             if (screen_desktop_layout.orientation ==
 353                 prop_atoms.net_wm_orientation_horz) {
 354                 if (screen_desktop_layout.rows > screen_num_desktops)
 355                     screen_desktop_layout.rows = screen_num_desktops;
 356                 if (screen_desktop_layout.columns >
 357                     ((screen_num_desktops + screen_num_desktops %
 358                       screen_desktop_layout.rows) /
 359                      screen_desktop_layout.rows))
 360                     screen_desktop_layout.columns =
 361                         (screen_num_desktops + screen_num_desktops %
 362                          screen_desktop_layout.rows) /
 363                         screen_desktop_layout.rows;
 364             } else {
 365                 if (screen_desktop_layout.columns > screen_num_desktops)
 366                     screen_desktop_layout.columns = screen_num_desktops;
 367                 if (screen_desktop_layout.rows >
 368                     ((screen_num_desktops + screen_num_desktops %
 369                       screen_desktop_layout.columns) /
 370                      screen_desktop_layout.columns))
 371                     screen_desktop_layout.rows =
 372                         (screen_num_desktops + screen_num_desktops %
 373                          screen_desktop_layout.columns) /
 374                         screen_desktop_layout.columns;
 375             }
 376         }
 377         g_free(data);
 378     }
 379 }
 380
 381 void screen_update_desktop_names()
 382 {
 383     guint i;
 384
 385     /* empty the array */
 386     g_strfreev(screen_desktop_names);
 387     screen_desktop_names = NULL;
 388
 389     if (PROP_GETSS(ob_root, net_desktop_names, utf8, &screen_desktop_names))
 390         for (i = 0; screen_desktop_names[i] && i <= screen_num_desktops; ++i);
 391     else
 392         i = 0;
 393     if (i <= screen_num_desktops) {
 394         screen_desktop_names = g_renew(char*, screen_desktop_names,
 395                                        screen_num_desktops + 1);
 396         screen_desktop_names[screen_num_desktops] = NULL;
 397         for (; i < screen_num_desktops; ++i)
 398             screen_desktop_names[i] = g_strdup("Unnamed Desktop");
 399     }
 400 }
 401
 402 void screen_show_desktop(gboolean show)
 403 {
 404     GList *it;
 405
 406     if (show == screen_showing_desktop) return; /* no change */
 407
 408     screen_showing_desktop = show;
 409
 410     if (show) {
 411         /* bottom to top */
 412         for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 413             Client *client = it->data;
 414             if (client->frame->visible && !client_should_show(client))
 415                 frame_hide(client->frame);
 416         }
 417     } else {
 418         /* top to bottom */
 419         for (it = stacking_list; it != NULL; it = it->next) {
 420             Client *client = it->data;
 421             if (!client->frame->visible && client_should_show(client))
 422                 frame_show(client->frame);
 423         }
 424     }
 425
 426     if (show) {
 427         /* focus desktop */
 428         for (it = focus_order[screen_desktop]; it; it = it->next)
 429             if (((Client*)it->data)->type == Type_Desktop &&
 430                 client_focus(it->data))
 431                 break;
 432     } else {
 433         focus_fallback(Fallback_NoFocus);
 434     }
 435
 436     show = !!show; /* make it boolean */
 437     PROP_SET32(ob_root, net_showing_desktop, cardinal, show);
 438
 439     dispatch_ob(Event_Ob_ShowDesktop, show, 0);
 440 }
 441
 442 void screen_install_colormap(Client *client, gboolean install)
 443 {
 444     XWindowAttributes wa;
 445
 446     if (client == NULL) {
 447         if (install)
 448             XInstallColormap(ob_display, render_colormap);
 449         else
 450             XUninstallColormap(ob_display, render_colormap);
 451     } else {
 452         if (XGetWindowAttributes(ob_display, client->window, &wa) &&
 453             wa.colormap != None) {
 454             if (install)
 455                 XInstallColormap(ob_display, wa.colormap);
 456             else
 457                 XUninstallColormap(ob_display, wa.colormap);
 458         }
 459     }
 460 }
 461
 462 void screen_update_struts()
 463 {
 464     GList *it;
 465     guint i;
 466
 467     g_free(strut);
 468     strut = g_new0(Strut, screen_num_desktops + 1);
 469
 470     for (it = client_list; it != NULL; it = it->next) {
 471         Client *c = it->data;
 472         if (c->iconic) continue; /* these dont count in the strut */
 473
 474         if (c->desktop == 0xffffffff) {
 475             for (i = 0; i < screen_num_desktops; ++i)
 476                 STRUT_ADD(strut[i], c->strut);
 477         } else {
 478             g_assert(c->desktop < screen_num_desktops);
 479             STRUT_ADD(strut[c->desktop], c->strut);
 480         }
 481         /* apply to the 'all desktops' strut */
 482         STRUT_ADD(strut[screen_num_desktops], c->strut);
 483     }
 484     screen_update_area();
 485 }
 486
 487 static void screen_update_area()
 488 {
 489     guint i;
 490     guint32 *dims;
 491
 492     g_free(area);
 493     area = g_new0(Rect, screen_num_desktops + 1);
 494
 495     dims = g_new(guint32, 4 * screen_num_desktops);
 496     for (i = 0; i < screen_num_desktops + 1; ++i) {
 497         Rect old_area = area[i];
 498 /*
 499   #ifdef    XINERAMA
 500   // reset to the full areas
 501   if (isXineramaActive())
 502   xineramaUsableArea = getXineramaAreas();
 503   #endif // XINERAMA
 504 */
 505
 506         RECT_SET(area[i], strut[i].left, strut[i].top,
 507                  screen_physical_size.width - (strut[i].left +
 508                                                strut[i].right),
 509                  screen_physical_size.height - (strut[i].top +
 510                                                 strut[i].bottom));
 511
 512 /*
 513   #ifdef    XINERAMA
 514   if (isXineramaActive()) {
 515   // keep each of the ximerama-defined areas inside the strut
 516   RectList::iterator xit, xend = xineramaUsableArea.end();
 517   for (xit = xineramaUsableArea.begin(); xit != xend; ++xit) {
 518   if (xit->x() < usableArea.x()) {
 519   xit->setX(usableArea.x());
 520   xit->setWidth(xit->width() - usableArea.x());
 521   }
 522   if (xit->y() < usableArea.y()) {
 523   xit->setY(usableArea.y());
 524   xit->setHeight(xit->height() - usableArea.y());
 525   }
 526   if (xit->x() + xit->width() > usableArea.width())
 527   xit->setWidth(usableArea.width() - xit->x());
 528   if (xit->y() + xit->height() > usableArea.height())
 529   xit->setHeight(usableArea.height() - xit->y());
 530   }
 531   }
 532   #endif // XINERAMA
 533 */
 534         if (!RECT_EQUAL(old_area, area[i])) {
 535             /* the area has changed, adjust all the maximized windows */
 536             GList *it;
 537             for (it = client_list; it; it = it->next) {
 538                 Client *c = it->data;
 539                 if (i < screen_num_desktops) {
 540                     if (c->desktop == i)
 541                         client_remaximize(c);
 542                 } else {
 543                     /* the 'all desktops' size */
 544                     if (c->desktop == DESKTOP_ALL)
 545                         client_remaximize(c);
 546                 }
 547             }
 548         }
 549
 550         /* don't set these for the 'all desktops' area */
 551         if (i < screen_num_desktops) {
 552             dims[(i * 4) + 0] = area[i].x;
 553             dims[(i * 4) + 1] = area[i].y;
 554             dims[(i * 4) + 2] = area[i].width;
 555             dims[(i * 4) + 3] = area[i].height;
 556         }
 557     }
 558     PROP_SETA32(ob_root, net_workarea, cardinal,
 559                 dims, 4 * screen_num_desktops);
 560     g_free(dims);
 561 }
 562
 563 Rect *screen_area(guint desktop)
 564 {
 565     if (desktop >= screen_num_desktops) {
 566         if (desktop == DESKTOP_ALL)
 567             return &area[screen_num_desktops];
 568         return NULL;
 569     }
 570     return &area[desktop];
 571 }
 572
 573 Strut *screen_strut(guint desktop)
 574 {
 575     if (desktop >= screen_num_desktops) {
 576         if (desktop == DESKTOP_ALL)
 577             return &strut[screen_num_desktops];
 578         return NULL;
 579     }
 580     return &strut[desktop];
 581 }