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 #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 GPtrArray *screen_desktop_names;
  29
  30 static Rect  *area = NULL;
  31 static Strut *strut = NULL;
  32
  33 static void screen_update_area();
  34
  35 static gboolean running;
  36 static int another_running(Display *d, XErrorEvent *e)
  37 {
  38     (void)d;(void)e;
  39     g_message("A window manager is already running on screen %d",
  40               ob_screen);
  41     running = TRUE;
  42     return -1;
  43 }
  44
  45 gboolean screen_annex()
  46 {
  47     XErrorHandler old;
  48     Window support;
  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 = 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);
  75
  76     /* set properties on the supporting window */
  77     PROP_SETS(support, net_wm_name, utf8, "Openbox");
  78     PROP_SET32(support, net_supporting_wm_check, window, support);
  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_SET32A(ob_root, net_supported, atom, supported, num_support);
 144     g_free(supported);
 145
 146     return TRUE;
 147 }
 148
 149 void screen_startup()
 150 {
 151     screen_desktop_names = g_ptr_array_new();
 152
 153     /* get the initial size */
 154     screen_resize();
 155
 156     screen_set_num_desktops(4);
 157     screen_set_desktop(0);
 158
 159     /* don't start in showing-desktop mode */
 160     screen_showing_desktop = FALSE;
 161     PROP_SET32(ob_root, net_showing_desktop, cardinal, screen_showing_desktop);
 162
 163     screen_update_layout();
 164 }
 165
 166 void screen_shutdown()
 167 {
 168     guint i;
 169     for (i = 0; i < screen_desktop_names->len; ++i)
 170         g_free(g_ptr_array_index(screen_desktop_names, i));
 171     g_ptr_array_free(screen_desktop_names, TRUE);
 172     g_free(strut);
 173     g_free(area);
 174 }
 175
 176 void screen_resize()
 177 {
 178     /* Set the _NET_DESKTOP_GEOMETRY hint */
 179     /* XXX RandR support here? */
 180     int geometry[2];
 181
 182     geometry[0] = WidthOfScreen(ScreenOfDisplay(ob_display, ob_screen));
 183     geometry[1] = HeightOfScreen(ScreenOfDisplay(ob_display, ob_screen));
 184     PROP_SET32A(ob_root, net_desktop_geometry, cardinal, geometry, 2);
 185     screen_physical_size.width = geometry[0];
 186     screen_physical_size.height = geometry[1];
 187
 188     if (ob_state == State_Starting)
 189         return;
 190
 191     screen_update_struts();
 192
 193     /* XXX adjust more stuff ? */
 194 }
 195
 196 void screen_set_num_desktops(guint num)
 197 {
 198     guint i, old;
 199     gulong *viewport;
 200
 201     g_assert(num > 0);
 202
 203     /* move windows on desktops that will no longer exist! */
 204     /* XXX
 205        std::list<Client*>::iterator it, end = clients.end();
 206        for (it = clients.begin(); it != end; ++it) {
 207        unsigned int d = (*it)->desktop();
 208        if (d >= num && d != 0xffffffff) {
 209        XEvent ce;
 210        ce.xclient.type = ClientMessage;
 211        ce.xclient.message_type = otk::Property::atoms.net_wm_desktop;
 212        ce.xclient.display = **otk::display;
 213        ce.xclient.window = (*it)->window();
 214        ce.xclient.format = 32;
 215        ce.xclient.data.l[0] = num - 1;
 216        XSendEvent(**otk::display, _info->rootWindow(), false,
 217        SubstructureNotifyMask | SubstructureRedirectMask, &ce);
 218        }
 219        }
 220     */
 221
 222     old = screen_num_desktops;
 223     screen_num_desktops = num;
 224     PROP_SET32(ob_root, net_number_of_desktops, cardinal, num);
 225
 226     /* set the viewport hint */
 227     viewport = g_new0(gulong, num * 2);
 228     PROP_SET32A(ob_root, net_desktop_viewport, cardinal, viewport, num * 2);
 229     g_free(viewport);
 230
 231     /* change our struts/area to match */
 232     screen_update_struts();
 233
 234     /* the number of rows/columns will differ */
 235     screen_update_layout();
 236
 237     /* may be some unnamed desktops that we need to fill in with names */
 238     screen_update_desktop_names();
 239
 240     /* update the focus lists */
 241     /* free our lists for the desktops which have disappeared */
 242     for (i = num; i < old; ++i)
 243         g_list_free(focus_order[i]);
 244     /* realloc the array */
 245     focus_order = g_renew(GList*, focus_order, num);
 246     /* set the new lists to be empty */
 247     for (i = old; i < num; ++i)
 248         focus_order[i] = NULL;
 249
 250     dispatch_ob(Event_Ob_NumDesktops, num, old);
 251
 252     /* change our desktop if we're on one that no longer exists! */
 253     if (screen_desktop >= screen_num_desktops)
 254         screen_set_desktop(num - 1);
 255 }
 256
 257 void screen_set_desktop(guint num)
 258 {
 259     GList *it;
 260     guint old;
 261
 262     g_assert(num < screen_num_desktops);
 263
 264     g_message("Moving to desktop %u", num);
 265
 266     old = screen_desktop;
 267     screen_desktop = num;
 268     PROP_SET32(ob_root, net_current_desktop, cardinal, num);
 269
 270     if (old == num) return;
 271
 272     /* hide windows from bottom to top */
 273     for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 274         Client *c = it->data;
 275         if (c->frame->visible && !client_should_show(c))
 276             engine_frame_hide(c->frame);
 277     }
 278
 279     /* show windows from top to bottom */
 280     for (it = stacking_list; it != NULL; it = it->next) {
 281         Client *c = it->data;
 282         if (!c->frame->visible && client_should_show(c))
 283             engine_frame_show(c->frame);
 284     }
 285
 286     dispatch_ob(Event_Ob_Desktop, num, old);
 287 }
 288
 289 void screen_update_layout()
 290 {
 291     unsigned long *data = NULL;
 292
 293     /* defaults */
 294     screen_desktop_layout.orientation = prop_atoms.net_wm_orientation_horz;
 295     screen_desktop_layout.start_corner = prop_atoms.net_wm_topleft;
 296     screen_desktop_layout.rows = 1;
 297     screen_desktop_layout.columns = screen_num_desktops;
 298
 299     if (PROP_GET32A(ob_root, net_desktop_layout, cardinal, data, 4)) {
 300         if (data[0] == prop_atoms.net_wm_orientation_vert)
 301             screen_desktop_layout.orientation = data[0];
 302         if (data[3] == prop_atoms.net_wm_topright)
 303             screen_desktop_layout.start_corner = data[3];
 304         else if (data[3] == prop_atoms.net_wm_bottomright)
 305             screen_desktop_layout.start_corner = data[3];
 306         else if (data[3] == prop_atoms.net_wm_bottomleft)
 307             screen_desktop_layout.start_corner = data[3];
 308
 309         /* fill in a zero rows/columns */
 310         if (!(data[1] == 0 && data[2] == 0)) { /* both 0's is bad data.. */
 311             if (data[1] == 0) {
 312                 data[1] = (screen_num_desktops +
 313                            screen_num_desktops % data[2]) / data[2];
 314             } else if (data[2] == 0) {
 315                 data[2] = (screen_num_desktops +
 316                            screen_num_desktops % data[1]) / data[1];
 317             }
 318             screen_desktop_layout.columns = data[1];
 319             screen_desktop_layout.rows = data[2];
 320         }
 321
 322         /* bounds checking */
 323         if (screen_desktop_layout.orientation ==
 324             prop_atoms.net_wm_orientation_horz) {
 325             if (screen_desktop_layout.rows > screen_num_desktops)
 326                 screen_desktop_layout.rows = screen_num_desktops;
 327             if (screen_desktop_layout.columns > ((screen_num_desktops +
 328                                                   screen_num_desktops %
 329                                                   screen_desktop_layout.rows) /
 330                                                  screen_desktop_layout.rows))
 331                 screen_desktop_layout.columns =
 332                     (screen_num_desktops + screen_num_desktops %
 333                      screen_desktop_layout.rows) /
 334                     screen_desktop_layout.rows;
 335         } else {
 336             if (screen_desktop_layout.columns > screen_num_desktops)
 337                 screen_desktop_layout.columns = screen_num_desktops;
 338             if (screen_desktop_layout.rows > ((screen_num_desktops +
 339                                                screen_num_desktops %
 340                                                screen_desktop_layout.columns) /
 341                                               screen_desktop_layout.columns))
 342                 screen_desktop_layout.rows =
 343                     (screen_num_desktops + screen_num_desktops %
 344                      screen_desktop_layout.columns) /
 345                     screen_desktop_layout.columns;
 346         }
 347         g_free(data);
 348     }
 349 }
 350
 351 void screen_update_desktop_names()
 352 {
 353     guint i;
 354
 355     /* empty the array */
 356     for (i = 0; i < screen_desktop_names->len; ++i)
 357         g_free(g_ptr_array_index(screen_desktop_names, i));
 358     g_ptr_array_set_size(screen_desktop_names, 0);
 359
 360     PROP_GETSA(ob_root, net_desktop_names, utf8, screen_desktop_names);
 361
 362     while (screen_desktop_names->len < screen_num_desktops)
 363         g_ptr_array_add(screen_desktop_names, g_strdup("Unnamed Desktop"));
 364 }
 365
 366 void screen_show_desktop(gboolean show)
 367 {
 368     GList *it;
 369     static Window saved_focus = 0;
 370
 371     if (show == screen_showing_desktop) return; /* no change */
 372
 373     /* save the window focus, and restore it when leaving the show-desktop
 374        mode */
 375     if (show && focus_client)
 376         saved_focus = focus_client->window;
 377
 378     screen_showing_desktop = show;
 379
 380     if (show) {
 381         /* bottom to top */
 382         for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 383             Client *client = it->data;
 384             if (client->type == Type_Desktop)
 385                 client_focus(client);
 386             else if (client->frame->visible && !client_should_show(client))
 387                 engine_frame_hide(client->frame);
 388         }
 389     } else {
 390         /* top to bottom */
 391         for (it = stacking_list; it != NULL; it = it->next) {
 392             Client *client = it->data;
 393             if (!client->frame->visible && client_should_show(client))
 394                 engine_frame_show(client->frame);
 395         }
 396     }
 397
 398     if (!show) {
 399         Client *f = focus_client;
 400         if (!f || f->type == Type_Desktop) {
 401             Client *c = g_hash_table_lookup(client_map,
 402                                             (gpointer)saved_focus);
 403             if (c) client_focus(c);
 404         }
 405     }
 406
 407     show = !!show; /* make it boolean */
 408     PROP_SET32(ob_root, net_showing_desktop, cardinal, show);
 409
 410     dispatch_ob(Event_Ob_ShowDesktop, show, 0);
 411 }
 412
 413 void screen_install_colormap(Client *client, gboolean install)
 414 {
 415     if (client == NULL) {
 416         if (install)
 417             XInstallColormap(ob_display, render_colormap);
 418         else
 419             XUninstallColormap(ob_display, render_colormap);
 420     } else {
 421         XWindowAttributes wa;
 422         if (XGetWindowAttributes(ob_display, client->window, &wa)) {
 423             if (install)
 424                 XInstallColormap(ob_display, wa.colormap);
 425             else
 426                 XUninstallColormap(ob_display, wa.colormap);
 427         }
 428     }
 429 }
 430
 431 void screen_update_struts()
 432 {
 433     GSList *it;
 434     guint i;
 435
 436     if (strut != NULL)
 437         g_free(strut);
 438     strut = g_new0(Strut, screen_num_desktops + 1);
 439
 440     for (it = client_list; it; it = it->next) {
 441         Client *c = it->data;
 442         if (c->iconic) continue; /* these dont count in the strut */
 443
 444         if (c->desktop == 0xffffffff) {
 445             for (i = 0; i < screen_num_desktops; ++i)
 446                 STRUT_ADD(strut[i], c->strut);
 447         } else {
 448             g_assert(c->desktop < screen_num_desktops);
 449             STRUT_ADD(strut[c->desktop], c->strut);
 450         }
 451         /* apply to the 'all desktops' strut */
 452         STRUT_ADD(strut[screen_num_desktops], c->strut);
 453     }
 454     screen_update_area();
 455 }
 456
 457 static void screen_update_area()
 458 {
 459     guint i;
 460     gulong *dims;
 461
 462     if (area != NULL)
 463         g_free(area);
 464     area = g_new0(Rect, screen_num_desktops + 1);
 465
 466     dims = g_new(unsigned long, 4 * screen_num_desktops);
 467     for (i = 0; i < screen_num_desktops + 1; ++i) {
 468         Rect old_area = area[i];
 469 /*
 470   #ifdef    XINERAMA
 471   // reset to the full areas
 472   if (isXineramaActive())
 473   xineramaUsableArea = getXineramaAreas();
 474   #endif // XINERAMA
 475 */
 476
 477         RECT_SET(area[i], strut[i].left, strut[i].top,
 478                  screen_physical_size.width - (strut[i].left +
 479                                                strut[i].right),
 480                  screen_physical_size.height - (strut[i].top +
 481                                                 strut[i].bottom));
 482
 483 /*
 484   #ifdef    XINERAMA
 485   if (isXineramaActive()) {
 486   // keep each of the ximerama-defined areas inside the strut
 487   RectList::iterator xit, xend = xineramaUsableArea.end();
 488   for (xit = xineramaUsableArea.begin(); xit != xend; ++xit) {
 489   if (xit->x() < usableArea.x()) {
 490   xit->setX(usableArea.x());
 491   xit->setWidth(xit->width() - usableArea.x());
 492   }
 493   if (xit->y() < usableArea.y()) {
 494   xit->setY(usableArea.y());
 495   xit->setHeight(xit->height() - usableArea.y());
 496   }
 497   if (xit->x() + xit->width() > usableArea.width())
 498   xit->setWidth(usableArea.width() - xit->x());
 499   if (xit->y() + xit->height() > usableArea.height())
 500   xit->setHeight(usableArea.height() - xit->y());
 501   }
 502   }
 503   #endif // XINERAMA
 504 */
 505         if (!RECT_EQUAL(old_area, area[i])) {
 506             /* the area has changed, adjust all the maximized windows */
 507             GSList *it;
 508             for (it = client_list; it; it = it->next) {
 509                 Client *c = it->data;
 510                 if (i < screen_num_desktops) {
 511                     if (c->desktop == i)
 512                         client_remaximize(c);
 513                 } else {
 514                     /* the 'all desktops' size */
 515                     if (c->desktop == DESKTOP_ALL)
 516                         client_remaximize(c);
 517                 }
 518             }
 519         }
 520
 521         /* don't set these for the 'all desktops' area */
 522         if (i < screen_num_desktops) {
 523             dims[(i * 4) + 0] = area[i].x;
 524             dims[(i * 4) + 1] = area[i].y;
 525             dims[(i * 4) + 2] = area[i].width;
 526             dims[(i * 4) + 3] = area[i].height;
 527         }
 528     }
 529     PROP_SET32A(ob_root, net_workarea, cardinal,
 530                 dims, 4 * screen_num_desktops);
 531     g_free(dims);
 532 }
 533
 534 Rect *screen_area(guint desktop)
 535 {
 536     if (desktop >= screen_num_desktops) {
 537         if (desktop == DESKTOP_ALL)
 538             return &area[screen_num_desktops];
 539         return NULL;
 540     }
 541     return &area[desktop];
 542 }
 543
 544 Strut *screen_strut(guint desktop)
 545 {
 546     if (desktop >= screen_num_desktops) {
 547         if (desktop == DESKTOP_ALL)
 548             return &strut[screen_num_desktops];
 549         return NULL;
 550     }
 551     return &strut[desktop];
 552 }