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;
  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     Atom *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.left_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 = 48;
  82     i = 0;
  83     supported = g_new(Atom, 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     g_assert(i == num_support);
 133 /*
 134   supported[] = prop_atoms.net_wm_moveresize;
 135   supported[] = prop_atoms.net_wm_moveresize_size_topleft;
 136   supported[] = prop_atoms.net_wm_moveresize_size_topright;
 137   supported[] = prop_atoms.net_wm_moveresize_size_bottomleft;
 138   supported[] = prop_atoms.net_wm_moveresize_size_bottomright;
 139   supported[] = prop_atoms.net_wm_moveresize_move;
 140   supported[] = prop_atoms.net_wm_action_stick;
 141 */
 142
 143     PROP_SETA32(ob_root, net_supported, atom, supported, num_support);
 144     g_free(supported);
 145
 146     return TRUE;
 147 }
 148
 149 void screen_startup()
 150 {
 151     GSList *it;
 152     guint i;
 153
 154     /* get the initial size */
 155     screen_resize();
 156
 157     /* set the names */
 158     screen_desktop_names = g_new(char*,
 159                                  g_slist_length(config_desktops_names) + 1);
 160     for (i = 0, it = config_desktops_names; it; ++i, it = it->next)
 161         screen_desktop_names[i] = it->data; /* dont strdup */
 162     PROP_SETSS(ob_root, net_desktop_names, screen_desktop_names);
 163     g_free(screen_desktop_names); /* dont free the individual strings */
 164     screen_desktop_names = NULL;
 165
 166     screen_num_desktops = 0;
 167     screen_set_num_desktops(config_desktops_num);
 168     screen_desktop = 0;
 169     screen_set_desktop(0);
 170
 171     /* don't start in showing-desktop mode */
 172     screen_showing_desktop = FALSE;
 173     PROP_SET32(ob_root, net_showing_desktop, cardinal, screen_showing_desktop);
 174
 175     screen_update_layout();
 176 }
 177
 178 void screen_shutdown()
 179 {
 180     XSelectInput(ob_display, ob_root, NoEventMask);
 181
 182     PROP_ERASE(ob_root, openbox_pid); /* we're not running here no more! */
 183     PROP_ERASE(ob_root, net_supported); /* not without us */
 184     PROP_ERASE(ob_root, net_showing_desktop); /* don't keep this mode */
 185
 186     XDestroyWindow(ob_display, support_window);
 187
 188     g_strfreev(screen_desktop_names);
 189     g_free(strut);
 190     g_free(area);
 191 }
 192
 193 void screen_resize()
 194 {
 195     /* XXX RandR support here? */
 196     guint32 geometry[2];
 197
 198     /* Set the _NET_DESKTOP_GEOMETRY hint */
 199     geometry[0] = WidthOfScreen(ScreenOfDisplay(ob_display, ob_screen));
 200     geometry[1] = HeightOfScreen(ScreenOfDisplay(ob_display, ob_screen));
 201     PROP_SETA32(ob_root, net_desktop_geometry, cardinal, geometry, 2);
 202     screen_physical_size.width = geometry[0];
 203     screen_physical_size.height = geometry[1];
 204
 205     if (ob_state == State_Starting)
 206         return;
 207
 208     screen_update_struts();
 209
 210     /* XXX adjust more stuff ? */
 211 }
 212
 213 void screen_set_num_desktops(guint num)
 214 {
 215     guint i, old;
 216     guint32 *viewport;
 217     GList *it;
 218
 219     g_assert(num > 0);
 220
 221     old = screen_num_desktops;
 222     screen_num_desktops = num;
 223     PROP_SET32(ob_root, net_number_of_desktops, cardinal, num);
 224
 225     /* set the viewport hint */
 226     viewport = g_new0(guint32, num * 2);
 227     PROP_SETA32(ob_root, net_desktop_viewport, cardinal, viewport, num * 2);
 228     g_free(viewport);
 229
 230     /* change our struts/area to match */
 231     screen_update_struts();
 232
 233     /* the number of rows/columns will differ */
 234     screen_update_layout();
 235
 236     /* may be some unnamed desktops that we need to fill in with names */
 237     screen_update_desktop_names();
 238
 239     /* update the focus lists */
 240     /* free our lists for the desktops which have disappeared */
 241     for (i = num; i < old; ++i)
 242         g_list_free(focus_order[i]);
 243     /* realloc the array */
 244     focus_order = g_renew(GList*, focus_order, num);
 245     /* set the new lists to be empty */
 246     for (i = old; i < num; ++i)
 247         focus_order[i] = NULL;
 248
 249     /* move windows on desktops that will no longer exist! */
 250     for (it = client_list; it != NULL; it = it->next) {
 251         Client *c = it->data;
 252         if (c->desktop >= num)
 253             client_set_desktop(c, num - 1, FALSE);
 254     }
 255
 256     dispatch_ob(Event_Ob_NumDesktops, num, old);
 257
 258     /* change our desktop if we're on one that no longer exists! */
 259     if (screen_desktop >= screen_num_desktops)
 260         screen_set_desktop(num - 1);
 261 }
 262
 263 void screen_set_desktop(guint num)
 264 {
 265     GList *it;
 266     guint old;
 267     XEvent e;
 268
 269     g_assert(num < screen_num_desktops);
 270
 271     old = screen_desktop;
 272     screen_desktop = num;
 273     PROP_SET32(ob_root, net_current_desktop, cardinal, num);
 274
 275     if (old == num) return;
 276
 277     g_message("Moving to desktop %d", num+1);
 278
 279     /* show windows before hiding the rest to lessen the enter/leave events */
 280
 281     /* show windows from top to bottom */
 282     for (it = stacking_list; it != NULL; it = it->next) {
 283         Client *c = it->data;
 284         if (!c->frame->visible && client_should_show(c))
 285             frame_show(c->frame);
 286     }
 287
 288     /* hide windows from bottom to top */
 289     for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 290         Client *c = it->data;
 291         if (c->frame->visible && !client_should_show(c))
 292             frame_hide(c->frame);
 293     }
 294
 295     /* focus the last focused window on the desktop, and ignore enter events
 296        from the switch so it doesnt mess with the focus */
 297     XSync(ob_display, FALSE);
 298     while (XCheckTypedEvent(ob_display, EnterNotify, &e));
 299     focus_fallback(Fallback_Desktop);
 300
 301     dispatch_ob(Event_Ob_Desktop, num, old);
 302 }
 303
 304 void screen_update_layout()
 305 {
 306     guint32 *data = NULL;
 307     guint num;
 308
 309     /* defaults */
 310     screen_desktop_layout.orientation = prop_atoms.net_wm_orientation_horz;
 311     screen_desktop_layout.start_corner = prop_atoms.net_wm_topleft;
 312     screen_desktop_layout.rows = 1;
 313     screen_desktop_layout.columns = screen_num_desktops;
 314
 315     if (PROP_GETA32(ob_root, net_desktop_layout, cardinal, data, &num)) {
 316         if (num == 3 || num == 4) {
 317             if (data[0] == prop_atoms.net_wm_orientation_vert)
 318                 screen_desktop_layout.orientation = data[0];
 319             if (num == 3)
 320                 screen_desktop_layout.start_corner =
 321                     prop_atoms.net_wm_topright;
 322             else {
 323                 if (data[3] == prop_atoms.net_wm_topright)
 324                     screen_desktop_layout.start_corner = data[3];
 325                 else if (data[3] == prop_atoms.net_wm_bottomright)
 326                     screen_desktop_layout.start_corner = data[3];
 327                 else if (data[3] == prop_atoms.net_wm_bottomleft)
 328                     screen_desktop_layout.start_corner = data[3];
 329             }
 330
 331             /* fill in a zero rows/columns */
 332             if (!(data[1] == 0 && data[2] == 0)) { /* both 0's is bad data.. */
 333                 if (data[1] == 0) {
 334                     data[1] = (screen_num_desktops +
 335                                screen_num_desktops % data[2]) / data[2];
 336                 } else if (data[2] == 0) {
 337                     data[2] = (screen_num_desktops +
 338                                screen_num_desktops % data[1]) / data[1];
 339                 }
 340                 screen_desktop_layout.columns = data[1];
 341                 screen_desktop_layout.rows = data[2];
 342             }
 343
 344             /* bounds checking */
 345             if (screen_desktop_layout.orientation ==
 346                 prop_atoms.net_wm_orientation_horz) {
 347                 if (screen_desktop_layout.rows > screen_num_desktops)
 348                     screen_desktop_layout.rows = screen_num_desktops;
 349                 if (screen_desktop_layout.columns >
 350                     ((screen_num_desktops + screen_num_desktops %
 351                       screen_desktop_layout.rows) /
 352                      screen_desktop_layout.rows))
 353                     screen_desktop_layout.columns =
 354                         (screen_num_desktops + screen_num_desktops %
 355                          screen_desktop_layout.rows) /
 356                         screen_desktop_layout.rows;
 357             } else {
 358                 if (screen_desktop_layout.columns > screen_num_desktops)
 359                     screen_desktop_layout.columns = screen_num_desktops;
 360                 if (screen_desktop_layout.rows >
 361                     ((screen_num_desktops + screen_num_desktops %
 362                       screen_desktop_layout.columns) /
 363                      screen_desktop_layout.columns))
 364                     screen_desktop_layout.rows =
 365                         (screen_num_desktops + screen_num_desktops %
 366                          screen_desktop_layout.columns) /
 367                         screen_desktop_layout.columns;
 368             }
 369         }
 370         g_free(data);
 371     }
 372 }
 373
 374 void screen_update_desktop_names()
 375 {
 376     guint i;
 377
 378     /* empty the array */
 379     g_strfreev(screen_desktop_names);
 380
 381     PROP_GETSS(ob_root, net_desktop_names, utf8, &screen_desktop_names);
 382
 383     for (i = 0; screen_desktop_names[i] && i < screen_num_desktops; ++i);
 384     if (i < screen_num_desktops) {
 385         screen_desktop_names = g_renew(char*, screen_desktop_names,
 386                                        screen_num_desktops + 1);
 387         for (; i < screen_num_desktops; ++i)
 388             screen_desktop_names[i] = g_strdup("Unnamed Desktop");
 389     }
 390 }
 391
 392 void screen_show_desktop(gboolean show)
 393 {
 394     GList *it;
 395
 396     if (show == screen_showing_desktop) return; /* no change */
 397
 398     screen_showing_desktop = show;
 399
 400     if (show) {
 401         /* bottom to top */
 402         for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 403             Client *client = it->data;
 404             if (client->frame->visible && !client_should_show(client))
 405                 frame_hide(client->frame);
 406         }
 407     } else {
 408         /* top to bottom */
 409         for (it = stacking_list; it != NULL; it = it->next) {
 410             Client *client = it->data;
 411             if (!client->frame->visible && client_should_show(client))
 412                 frame_show(client->frame);
 413         }
 414     }
 415
 416     show = !!show; /* make it boolean */
 417     PROP_SET32(ob_root, net_showing_desktop, cardinal, show);
 418
 419     dispatch_ob(Event_Ob_ShowDesktop, show, 0);
 420 }
 421
 422 void screen_install_colormap(Client *client, gboolean install)
 423 {
 424     XWindowAttributes wa;
 425
 426     if (client == NULL) {
 427         if (install)
 428             XInstallColormap(ob_display, render_colormap);
 429         else
 430             XUninstallColormap(ob_display, render_colormap);
 431     } else {
 432         if (XGetWindowAttributes(ob_display, client->window, &wa) &&
 433             wa.colormap != None) {
 434             if (install)
 435                 XInstallColormap(ob_display, wa.colormap);
 436             else
 437                 XUninstallColormap(ob_display, wa.colormap);
 438         }
 439     }
 440 }
 441
 442 void screen_update_struts()
 443 {
 444     GList *it;
 445     guint i;
 446
 447     g_free(strut);
 448     strut = g_new0(Strut, screen_num_desktops + 1);
 449
 450     for (it = client_list; it != NULL; it = it->next) {
 451         Client *c = it->data;
 452         if (c->iconic) continue; /* these dont count in the strut */
 453
 454         if (c->desktop == 0xffffffff) {
 455             for (i = 0; i < screen_num_desktops; ++i)
 456                 STRUT_ADD(strut[i], c->strut);
 457         } else {
 458             g_assert(c->desktop < screen_num_desktops);
 459             STRUT_ADD(strut[c->desktop], c->strut);
 460         }
 461         /* apply to the 'all desktops' strut */
 462         STRUT_ADD(strut[screen_num_desktops], c->strut);
 463     }
 464     screen_update_area();
 465 }
 466
 467 static void screen_update_area()
 468 {
 469     guint i;
 470     guint32 *dims;
 471
 472     g_free(area);
 473     area = g_new0(Rect, screen_num_desktops + 1);
 474
 475     dims = g_new(guint32, 4 * screen_num_desktops);
 476     for (i = 0; i < screen_num_desktops + 1; ++i) {
 477         Rect old_area = area[i];
 478 /*
 479   #ifdef    XINERAMA
 480   // reset to the full areas
 481   if (isXineramaActive())
 482   xineramaUsableArea = getXineramaAreas();
 483   #endif // XINERAMA
 484 */
 485
 486         RECT_SET(area[i], strut[i].left, strut[i].top,
 487                  screen_physical_size.width - (strut[i].left +
 488                                                strut[i].right),
 489                  screen_physical_size.height - (strut[i].top +
 490                                                 strut[i].bottom));
 491
 492 /*
 493   #ifdef    XINERAMA
 494   if (isXineramaActive()) {
 495   // keep each of the ximerama-defined areas inside the strut
 496   RectList::iterator xit, xend = xineramaUsableArea.end();
 497   for (xit = xineramaUsableArea.begin(); xit != xend; ++xit) {
 498   if (xit->x() < usableArea.x()) {
 499   xit->setX(usableArea.x());
 500   xit->setWidth(xit->width() - usableArea.x());
 501   }
 502   if (xit->y() < usableArea.y()) {
 503   xit->setY(usableArea.y());
 504   xit->setHeight(xit->height() - usableArea.y());
 505   }
 506   if (xit->x() + xit->width() > usableArea.width())
 507   xit->setWidth(usableArea.width() - xit->x());
 508   if (xit->y() + xit->height() > usableArea.height())
 509   xit->setHeight(usableArea.height() - xit->y());
 510   }
 511   }
 512   #endif // XINERAMA
 513 */
 514         if (!RECT_EQUAL(old_area, area[i])) {
 515             /* the area has changed, adjust all the maximized windows */
 516             GList *it;
 517             for (it = client_list; it; it = it->next) {
 518                 Client *c = it->data;
 519                 if (i < screen_num_desktops) {
 520                     if (c->desktop == i)
 521                         client_remaximize(c);
 522                 } else {
 523                     /* the 'all desktops' size */
 524                     if (c->desktop == DESKTOP_ALL)
 525                         client_remaximize(c);
 526                 }
 527             }
 528         }
 529
 530         /* don't set these for the 'all desktops' area */
 531         if (i < screen_num_desktops) {
 532             dims[(i * 4) + 0] = area[i].x;
 533             dims[(i * 4) + 1] = area[i].y;
 534             dims[(i * 4) + 2] = area[i].width;
 535             dims[(i * 4) + 3] = area[i].height;
 536         }
 537     }
 538     PROP_SETA32(ob_root, net_workarea, cardinal,
 539                 dims, 4 * screen_num_desktops);
 540     g_free(dims);
 541 }
 542
 543 Rect *screen_area(guint desktop)
 544 {
 545     if (desktop >= screen_num_desktops) {
 546         if (desktop == DESKTOP_ALL)
 547             return &area[screen_num_desktops];
 548         return NULL;
 549     }
 550     return &area[desktop];
 551 }
 552
 553 Strut *screen_strut(guint desktop)
 554 {
 555     if (desktop >= screen_num_desktops) {
 556         if (desktop == DESKTOP_ALL)
 557             return &strut[screen_num_desktops];
 558         return NULL;
 559     }
 560     return &strut[desktop];
 561 }