openbox/screen.c

   1 #include "openbox.h"
   2 #include "prop.h"
   3 #include "startup.h"
   4 #include "config.h"
   5 #include "screen.h"
   6 #include "client.h"
   7 #include "frame.h"
   8 #include "focus.h"
   9 #include "dispatch.h"
  10 #include "../render/render.h"
  11
  12 #include <X11/Xlib.h>
  13 #ifdef HAVE_UNISTD_H
  14 #  include <sys/types.h>
  15 #  include <unistd.h>
  16 #endif
  17
  18 /*! The event mask to grab on the root window */
  19 #define ROOT_EVENTMASK (/*ColormapChangeMask |*/ PropertyChangeMask | \
  20                         EnterWindowMask | LeaveWindowMask | \
  21                         SubstructureNotifyMask | SubstructureRedirectMask | \
  22                         ButtonPressMask | ButtonReleaseMask | ButtonMotionMask)
  23
  24 guint    screen_num_desktops    = 0;
  25 guint    screen_desktop         = 0;
  26 Size     screen_physical_size;
  27 gboolean screen_showing_desktop;
  28 DesktopLayout screen_desktop_layout;
  29 char   **screen_desktop_names = NULL;
  30
  31 static Rect  *area = NULL;
  32 static Strut *strut = NULL;
  33 static Window support_window = None;
  34
  35 static void screen_update_area();
  36
  37 static gboolean running;
  38 static int another_running(Display *d, XErrorEvent *e)
  39 {
  40     (void)d;(void)e;
  41     g_message("A window manager is already running on screen %d",
  42               ob_screen);
  43     running = TRUE;
  44     return -1;
  45 }
  46
  47 gboolean screen_annex()
  48 {
  49     XErrorHandler old;
  50     pid_t pid;
  51     int i, num_support;
  52     guint32 *supported;
  53
  54     running = FALSE;
  55     old = XSetErrorHandler(another_running);
  56     XSelectInput(ob_display, ob_root, ROOT_EVENTMASK);
  57     XSync(ob_display, FALSE);
  58     XSetErrorHandler(old);
  59     if (running)
  60         return FALSE;
  61
  62     g_message("Managing screen %d", ob_screen);
  63
  64     /* set the mouse cursor for the root window (the default cursor) */
  65     XDefineCursor(ob_display, ob_root, ob_cursors.ptr);
  66
  67     /* set the OPENBOX_PID hint */
  68     pid = getpid();
  69     PROP_SET32(ob_root, openbox_pid, cardinal, pid);
  70
  71     /* create the netwm support window */
  72     support_window = XCreateSimpleWindow(ob_display, ob_root, 0,0,1,1,0,0,0);
  73
  74     /* set supporting window */
  75     PROP_SET32(ob_root, net_supporting_wm_check, window, support_window);
  76
  77     /* set properties on the supporting window */
  78     PROP_SETS(support_window, net_wm_name, "Openbox");
  79     PROP_SET32(support_window, net_supporting_wm_check, window,support_window);
  80
  81     /* set the _NET_SUPPORTED_ATOMS hint */
  82     num_support = 61;
  83     i = 0;
  84     supported = g_new(guint32, num_support);
  85     supported[i++] = prop_atoms.net_current_desktop;
  86     supported[i++] = prop_atoms.net_number_of_desktops;
  87     supported[i++] = prop_atoms.net_desktop_geometry;
  88     supported[i++] = prop_atoms.net_desktop_viewport;
  89     supported[i++] = prop_atoms.net_active_window;
  90     supported[i++] = prop_atoms.net_workarea;
  91     supported[i++] = prop_atoms.net_client_list;
  92     supported[i++] = prop_atoms.net_client_list_stacking;
  93     supported[i++] = prop_atoms.net_desktop_names;
  94     supported[i++] = prop_atoms.net_close_window;
  95     supported[i++] = prop_atoms.net_desktop_layout;
  96     supported[i++] = prop_atoms.net_showing_desktop;
  97     supported[i++] = prop_atoms.net_wm_name;
  98     supported[i++] = prop_atoms.net_wm_visible_name;
  99     supported[i++] = prop_atoms.net_wm_icon_name;
 100     supported[i++] = prop_atoms.net_wm_visible_icon_name;
 101     supported[i++] = prop_atoms.net_wm_desktop;
 102     supported[i++] = prop_atoms.net_wm_strut;
 103     supported[i++] = prop_atoms.net_wm_window_type;
 104     supported[i++] = prop_atoms.net_wm_window_type_desktop;
 105     supported[i++] = prop_atoms.net_wm_window_type_dock;
 106     supported[i++] = prop_atoms.net_wm_window_type_toolbar;
 107     supported[i++] = prop_atoms.net_wm_window_type_menu;
 108     supported[i++] = prop_atoms.net_wm_window_type_utility;
 109     supported[i++] = prop_atoms.net_wm_window_type_splash;
 110     supported[i++] = prop_atoms.net_wm_window_type_dialog;
 111     supported[i++] = prop_atoms.net_wm_window_type_normal;
 112     supported[i++] = prop_atoms.net_wm_allowed_actions;
 113     supported[i++] = prop_atoms.net_wm_action_move;
 114     supported[i++] = prop_atoms.net_wm_action_resize;
 115     supported[i++] = prop_atoms.net_wm_action_minimize;
 116     supported[i++] = prop_atoms.net_wm_action_shade;
 117     supported[i++] = prop_atoms.net_wm_action_maximize_horz;
 118     supported[i++] = prop_atoms.net_wm_action_maximize_vert;
 119     supported[i++] = prop_atoms.net_wm_action_fullscreen;
 120     supported[i++] = prop_atoms.net_wm_action_change_desktop;
 121     supported[i++] = prop_atoms.net_wm_action_close;
 122     supported[i++] = prop_atoms.net_wm_state;
 123     supported[i++] = prop_atoms.net_wm_state_modal;
 124     supported[i++] = prop_atoms.net_wm_state_maximized_vert;
 125     supported[i++] = prop_atoms.net_wm_state_maximized_horz;
 126     supported[i++] = prop_atoms.net_wm_state_shaded;
 127     supported[i++] = prop_atoms.net_wm_state_skip_taskbar;
 128     supported[i++] = prop_atoms.net_wm_state_skip_pager;
 129     supported[i++] = prop_atoms.net_wm_state_hidden;
 130     supported[i++] = prop_atoms.net_wm_state_fullscreen;
 131     supported[i++] = prop_atoms.net_wm_state_above;
 132     supported[i++] = prop_atoms.net_wm_state_below;
 133     supported[i++] = prop_atoms.net_moveresize_window;
 134     supported[i++] = prop_atoms.net_wm_moveresize;
 135     supported[i++] = prop_atoms.net_wm_moveresize_size_topleft;
 136     supported[i++] = prop_atoms.net_wm_moveresize_size_top;
 137     supported[i++] = prop_atoms.net_wm_moveresize_size_topright;
 138     supported[i++] = prop_atoms.net_wm_moveresize_size_right;
 139     supported[i++] = prop_atoms.net_wm_moveresize_size_bottomright;
 140     supported[i++] = prop_atoms.net_wm_moveresize_size_bottom;
 141     supported[i++] = prop_atoms.net_wm_moveresize_size_bottomleft;
 142     supported[i++] = prop_atoms.net_wm_moveresize_size_left;
 143     supported[i++] = prop_atoms.net_wm_moveresize_move;
 144     supported[i++] = prop_atoms.net_wm_moveresize_size_keyboard;
 145     supported[i++] = prop_atoms.net_wm_moveresize_move_keyboard;
 146     g_assert(i == num_support);
 147 /*
 148   supported[] = prop_atoms.net_wm_action_stick;
 149 */
 150
 151     PROP_SETA32(ob_root, net_supported, atom, supported, num_support);
 152     g_free(supported);
 153
 154     return TRUE;
 155 }
 156
 157 void screen_startup()
 158 {
 159     GSList *it;
 160     guint i;
 161
 162     /* get the initial size */
 163     screen_resize();
 164
 165     /* set the names */
 166     screen_desktop_names = g_new(char*,
 167                                  g_slist_length(config_desktops_names) + 1);
 168     for (i = 0, it = config_desktops_names; it; ++i, it = it->next)
 169         screen_desktop_names[i] = it->data; /* dont strdup */
 170     screen_desktop_names[i] = NULL;
 171     PROP_SETSS(ob_root, net_desktop_names, screen_desktop_names);
 172     g_free(screen_desktop_names); /* dont free the individual strings */
 173     screen_desktop_names = NULL;
 174
 175     screen_num_desktops = 0;
 176     screen_set_num_desktops(config_desktops_num);
 177     if (startup_desktop >= screen_num_desktops)
 178         startup_desktop = 0;
 179     screen_desktop = startup_desktop;
 180     screen_set_desktop(startup_desktop);
 181
 182     /* don't start in showing-desktop mode */
 183     screen_showing_desktop = FALSE;
 184     PROP_SET32(ob_root, net_showing_desktop, cardinal, screen_showing_desktop);
 185
 186     screen_update_layout();
 187 }
 188
 189 void screen_shutdown()
 190 {
 191     XSelectInput(ob_display, ob_root, NoEventMask);
 192
 193     PROP_ERASE(ob_root, openbox_pid); /* we're not running here no more! */
 194     PROP_ERASE(ob_root, net_supported); /* not without us */
 195     PROP_ERASE(ob_root, net_showing_desktop); /* don't keep this mode */
 196
 197     XDestroyWindow(ob_display, support_window);
 198
 199     g_strfreev(screen_desktop_names);
 200     g_free(strut);
 201     g_free(area);
 202 }
 203
 204 void screen_resize()
 205 {
 206     /* XXX RandR support here? */
 207     guint32 geometry[2];
 208
 209     /* Set the _NET_DESKTOP_GEOMETRY hint */
 210     geometry[0] = WidthOfScreen(ScreenOfDisplay(ob_display, ob_screen));
 211     geometry[1] = HeightOfScreen(ScreenOfDisplay(ob_display, ob_screen));
 212     PROP_SETA32(ob_root, net_desktop_geometry, cardinal, geometry, 2);
 213     screen_physical_size.width = geometry[0];
 214     screen_physical_size.height = geometry[1];
 215
 216     if (ob_state == State_Starting)
 217         return;
 218
 219     screen_update_struts();
 220
 221     /* XXX adjust more stuff ? */
 222 }
 223
 224 void screen_set_num_desktops(guint num)
 225 {
 226     guint i, old;
 227     guint32 *viewport;
 228     GList *it;
 229
 230     g_assert(num > 0);
 231
 232     old = screen_num_desktops;
 233     screen_num_desktops = num;
 234     PROP_SET32(ob_root, net_number_of_desktops, cardinal, num);
 235
 236     /* set the viewport hint */
 237     viewport = g_new0(guint32, num * 2);
 238     PROP_SETA32(ob_root, net_desktop_viewport, cardinal, viewport, num * 2);
 239     g_free(viewport);
 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 && c->desktop != DESKTOP_ALL)
 261             client_set_desktop(c, num - 1, FALSE);
 262     }
 263
 264     /* change our struts/area to match (after moving windows) */
 265     screen_update_struts();
 266
 267     dispatch_ob(Event_Ob_NumDesktops, num, old);
 268
 269     /* change our desktop if we're on one that no longer exists! */
 270     if (screen_desktop >= screen_num_desktops)
 271         screen_set_desktop(num - 1);
 272 }
 273
 274 void screen_set_desktop(guint num)
 275 {
 276     GList *it;
 277     guint old;
 278     XEvent e;
 279
 280     g_assert(num < screen_num_desktops);
 281
 282     old = screen_desktop;
 283     screen_desktop = num;
 284     PROP_SET32(ob_root, net_current_desktop, cardinal, num);
 285
 286     if (old == num) return;
 287
 288     g_message("Moving to desktop %d", num+1);
 289
 290     /* show windows before hiding the rest to lessen the enter/leave events */
 291
 292     /* show windows from top to bottom */
 293     for (it = stacking_list; it != NULL; it = it->next) {
 294         Client *c = it->data;
 295         if (!c->frame->visible && client_should_show(c))
 296             frame_show(c->frame);
 297     }
 298
 299     /* hide windows from bottom to top */
 300     for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 301         Client *c = it->data;
 302         if (c->frame->visible && !client_should_show(c))
 303             frame_hide(c->frame);
 304     }
 305
 306     /* focus the last focused window on the desktop, and ignore enter events
 307        from the switch so it doesnt mess with the focus */
 308     while (XCheckTypedEvent(ob_display, EnterNotify, &e));
 309     focus_fallback(Fallback_Desktop);
 310
 311     dispatch_ob(Event_Ob_Desktop, num, old);
 312 }
 313
 314 void screen_update_layout()
 315 {
 316     guint32 *data = NULL;
 317     guint num;
 318
 319     /* defaults */
 320     screen_desktop_layout.orientation = prop_atoms.net_wm_orientation_horz;
 321     screen_desktop_layout.start_corner = prop_atoms.net_wm_topleft;
 322     screen_desktop_layout.rows = 1;
 323     screen_desktop_layout.columns = screen_num_desktops;
 324
 325     if (PROP_GETA32(ob_root, net_desktop_layout, cardinal, &data, &num)) {
 326         if (num == 3 || num == 4) {
 327             if (data[0] == prop_atoms.net_wm_orientation_vert)
 328                 screen_desktop_layout.orientation = data[0];
 329             if (num == 3)
 330                 screen_desktop_layout.start_corner =
 331                     prop_atoms.net_wm_topright;
 332             else {
 333                 if (data[3] == prop_atoms.net_wm_topright)
 334                     screen_desktop_layout.start_corner = data[3];
 335                 else if (data[3] == prop_atoms.net_wm_bottomright)
 336                     screen_desktop_layout.start_corner = data[3];
 337                 else if (data[3] == prop_atoms.net_wm_bottomleft)
 338                     screen_desktop_layout.start_corner = data[3];
 339             }
 340
 341             /* fill in a zero rows/columns */
 342             if (!(data[1] == 0 && data[2] == 0)) { /* both 0's is bad data.. */
 343                 if (data[1] == 0) {
 344                     data[1] = (screen_num_desktops +
 345                                screen_num_desktops % data[2]) / data[2];
 346                 } else if (data[2] == 0) {
 347                     data[2] = (screen_num_desktops +
 348                                screen_num_desktops % data[1]) / data[1];
 349                 }
 350                 screen_desktop_layout.columns = data[1];
 351                 screen_desktop_layout.rows = data[2];
 352             }
 353
 354             /* bounds checking */
 355             if (screen_desktop_layout.orientation ==
 356                 prop_atoms.net_wm_orientation_horz) {
 357                 if (screen_desktop_layout.rows > screen_num_desktops)
 358                     screen_desktop_layout.rows = screen_num_desktops;
 359                 if (screen_desktop_layout.columns >
 360                     ((screen_num_desktops + screen_num_desktops %
 361                       screen_desktop_layout.rows) /
 362                      screen_desktop_layout.rows))
 363                     screen_desktop_layout.columns =
 364                         (screen_num_desktops + screen_num_desktops %
 365                          screen_desktop_layout.rows) /
 366                         screen_desktop_layout.rows;
 367             } else {
 368                 if (screen_desktop_layout.columns > screen_num_desktops)
 369                     screen_desktop_layout.columns = screen_num_desktops;
 370                 if (screen_desktop_layout.rows >
 371                     ((screen_num_desktops + screen_num_desktops %
 372                       screen_desktop_layout.columns) /
 373                      screen_desktop_layout.columns))
 374                     screen_desktop_layout.rows =
 375                         (screen_num_desktops + screen_num_desktops %
 376                          screen_desktop_layout.columns) /
 377                         screen_desktop_layout.columns;
 378             }
 379         }
 380         g_free(data);
 381     }
 382 }
 383
 384 void screen_update_desktop_names()
 385 {
 386     guint i;
 387
 388     /* empty the array */
 389     g_strfreev(screen_desktop_names);
 390     screen_desktop_names = NULL;
 391
 392     if (PROP_GETSS(ob_root, net_desktop_names, utf8, &screen_desktop_names))
 393         for (i = 0; screen_desktop_names[i] && i <= screen_num_desktops; ++i);
 394     else
 395         i = 0;
 396     if (i <= screen_num_desktops) {
 397         screen_desktop_names = g_renew(char*, screen_desktop_names,
 398                                        screen_num_desktops + 1);
 399         screen_desktop_names[screen_num_desktops] = NULL;
 400         for (; i < screen_num_desktops; ++i)
 401             screen_desktop_names[i] = g_strdup("Unnamed Desktop");
 402     }
 403 }
 404
 405 void screen_show_desktop(gboolean show)
 406 {
 407     GList *it;
 408
 409     if (show == screen_showing_desktop) return; /* no change */
 410
 411     screen_showing_desktop = show;
 412
 413     if (show) {
 414         /* bottom to top */
 415         for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 416             Client *client = it->data;
 417             if (client->frame->visible && !client_should_show(client))
 418                 frame_hide(client->frame);
 419         }
 420     } else {
 421         /* top to bottom */
 422         for (it = stacking_list; it != NULL; it = it->next) {
 423             Client *client = it->data;
 424             if (!client->frame->visible && client_should_show(client))
 425                 frame_show(client->frame);
 426         }
 427     }
 428
 429     if (show) {
 430         /* focus desktop */
 431         for (it = focus_order[screen_desktop]; it; it = it->next)
 432             if (((Client*)it->data)->type == Type_Desktop &&
 433                 client_focus(it->data))
 434                 break;
 435     } else {
 436         focus_fallback(Fallback_NoFocus);
 437     }
 438
 439     show = !!show; /* make it boolean */
 440     PROP_SET32(ob_root, net_showing_desktop, cardinal, show);
 441
 442     dispatch_ob(Event_Ob_ShowDesktop, show, 0);
 443 }
 444
 445 void screen_install_colormap(Client *client, gboolean install)
 446 {
 447     XWindowAttributes wa;
 448
 449     if (client == NULL) {
 450         if (install)
 451             XInstallColormap(ob_display, render_colormap);
 452         else
 453             XUninstallColormap(ob_display, render_colormap);
 454     } else {
 455         if (XGetWindowAttributes(ob_display, client->window, &wa) &&
 456             wa.colormap != None) {
 457             if (install)
 458                 XInstallColormap(ob_display, wa.colormap);
 459             else
 460                 XUninstallColormap(ob_display, wa.colormap);
 461         }
 462     }
 463 }
 464
 465 void screen_update_struts()
 466 {
 467     GList *it;
 468     guint i;
 469
 470     g_free(strut);
 471     strut = g_new0(Strut, screen_num_desktops + 1);
 472
 473     for (it = client_list; it != NULL; it = it->next) {
 474         Client *c = it->data;
 475         if (c->iconic) continue; /* these dont count in the strut */
 476
 477         if (c->desktop == 0xffffffff) {
 478             for (i = 0; i < screen_num_desktops; ++i)
 479                 STRUT_ADD(strut[i], c->strut);
 480         } else {
 481             g_assert(c->desktop < screen_num_desktops);
 482             STRUT_ADD(strut[c->desktop], c->strut);
 483         }
 484         /* apply to the 'all desktops' strut */
 485         STRUT_ADD(strut[screen_num_desktops], c->strut);
 486     }
 487     screen_update_area();
 488 }
 489
 490 static void screen_update_area()
 491 {
 492     guint i;
 493     guint32 *dims;
 494
 495     g_free(area);
 496     area = g_new0(Rect, screen_num_desktops + 1);
 497
 498     dims = g_new(guint32, 4 * screen_num_desktops);
 499     for (i = 0; i < screen_num_desktops + 1; ++i) {
 500         Rect old_area = area[i];
 501 /*
 502   #ifdef    XINERAMA
 503   // reset to the full areas
 504   if (isXineramaActive())
 505   xineramaUsableArea = getXineramaAreas();
 506   #endif // XINERAMA
 507 */
 508
 509         RECT_SET(area[i], strut[i].left, strut[i].top,
 510                  screen_physical_size.width - (strut[i].left +
 511                                                strut[i].right),
 512                  screen_physical_size.height - (strut[i].top +
 513                                                 strut[i].bottom));
 514
 515 /*
 516   #ifdef    XINERAMA
 517   if (isXineramaActive()) {
 518   // keep each of the ximerama-defined areas inside the strut
 519   RectList::iterator xit, xend = xineramaUsableArea.end();
 520   for (xit = xineramaUsableArea.begin(); xit != xend; ++xit) {
 521   if (xit->x() < usableArea.x()) {
 522   xit->setX(usableArea.x());
 523   xit->setWidth(xit->width() - usableArea.x());
 524   }
 525   if (xit->y() < usableArea.y()) {
 526   xit->setY(usableArea.y());
 527   xit->setHeight(xit->height() - usableArea.y());
 528   }
 529   if (xit->x() + xit->width() > usableArea.width())
 530   xit->setWidth(usableArea.width() - xit->x());
 531   if (xit->y() + xit->height() > usableArea.height())
 532   xit->setHeight(usableArea.height() - xit->y());
 533   }
 534   }
 535   #endif // XINERAMA
 536 */
 537         if (!RECT_EQUAL(old_area, area[i])) {
 538             /* the area has changed, adjust all the maximized windows */
 539             GList *it;
 540             for (it = client_list; it; it = it->next) {
 541                 Client *c = it->data;
 542                 if (i < screen_num_desktops) {
 543                     if (c->desktop == i)
 544                         client_remaximize(c);
 545                 } else {
 546                     /* the 'all desktops' size */
 547                     if (c->desktop == DESKTOP_ALL)
 548                         client_remaximize(c);
 549                 }
 550             }
 551         }
 552
 553         /* don't set these for the 'all desktops' area */
 554         if (i < screen_num_desktops) {
 555             dims[(i * 4) + 0] = area[i].x;
 556             dims[(i * 4) + 1] = area[i].y;
 557             dims[(i * 4) + 2] = area[i].width;
 558             dims[(i * 4) + 3] = area[i].height;
 559         }
 560     }
 561     PROP_SETA32(ob_root, net_workarea, cardinal,
 562                 dims, 4 * screen_num_desktops);
 563     g_free(dims);
 564 }
 565
 566 Rect *screen_area(guint desktop)
 567 {
 568     if (desktop >= screen_num_desktops) {
 569         if (desktop == DESKTOP_ALL)
 570             return &area[screen_num_desktops];
 571         return NULL;
 572     }
 573     return &area[desktop];
 574 }
 575
 576 Strut *screen_strut(guint desktop)
 577 {
 578     if (desktop >= screen_num_desktops) {
 579         if (desktop == DESKTOP_ALL)
 580             return &strut[screen_num_desktops];
 581         return NULL;
 582     }
 583     return &strut[desktop];
 584 }