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     XSync(ob_display, FALSE);
 306     while (XCheckTypedEvent(ob_display, EnterNotify, &e));
 307     focus_fallback(Fallback_Desktop);
 308
 309     dispatch_ob(Event_Ob_Desktop, num, old);
 310 }
 311
 312 void screen_update_layout()
 313 {
 314     guint32 *data = NULL;
 315     guint num;
 316
 317     /* defaults */
 318     screen_desktop_layout.orientation = prop_atoms.net_wm_orientation_horz;
 319     screen_desktop_layout.start_corner = prop_atoms.net_wm_topleft;
 320     screen_desktop_layout.rows = 1;
 321     screen_desktop_layout.columns = screen_num_desktops;
 322
 323     if (PROP_GETA32(ob_root, net_desktop_layout, cardinal, &data, &num)) {
 324         if (num == 3 || num == 4) {
 325             if (data[0] == prop_atoms.net_wm_orientation_vert)
 326                 screen_desktop_layout.orientation = data[0];
 327             if (num == 3)
 328                 screen_desktop_layout.start_corner =
 329                     prop_atoms.net_wm_topright;
 330             else {
 331                 if (data[3] == prop_atoms.net_wm_topright)
 332                     screen_desktop_layout.start_corner = data[3];
 333                 else if (data[3] == prop_atoms.net_wm_bottomright)
 334                     screen_desktop_layout.start_corner = data[3];
 335                 else if (data[3] == prop_atoms.net_wm_bottomleft)
 336                     screen_desktop_layout.start_corner = data[3];
 337             }
 338
 339             /* fill in a zero rows/columns */
 340             if (!(data[1] == 0 && data[2] == 0)) { /* both 0's is bad data.. */
 341                 if (data[1] == 0) {
 342                     data[1] = (screen_num_desktops +
 343                                screen_num_desktops % data[2]) / data[2];
 344                 } else if (data[2] == 0) {
 345                     data[2] = (screen_num_desktops +
 346                                screen_num_desktops % data[1]) / data[1];
 347                 }
 348                 screen_desktop_layout.columns = data[1];
 349                 screen_desktop_layout.rows = data[2];
 350             }
 351
 352             /* bounds checking */
 353             if (screen_desktop_layout.orientation ==
 354                 prop_atoms.net_wm_orientation_horz) {
 355                 if (screen_desktop_layout.rows > screen_num_desktops)
 356                     screen_desktop_layout.rows = screen_num_desktops;
 357                 if (screen_desktop_layout.columns >
 358                     ((screen_num_desktops + screen_num_desktops %
 359                       screen_desktop_layout.rows) /
 360                      screen_desktop_layout.rows))
 361                     screen_desktop_layout.columns =
 362                         (screen_num_desktops + screen_num_desktops %
 363                          screen_desktop_layout.rows) /
 364                         screen_desktop_layout.rows;
 365             } else {
 366                 if (screen_desktop_layout.columns > screen_num_desktops)
 367                     screen_desktop_layout.columns = screen_num_desktops;
 368                 if (screen_desktop_layout.rows >
 369                     ((screen_num_desktops + screen_num_desktops %
 370                       screen_desktop_layout.columns) /
 371                      screen_desktop_layout.columns))
 372                     screen_desktop_layout.rows =
 373                         (screen_num_desktops + screen_num_desktops %
 374                          screen_desktop_layout.columns) /
 375                         screen_desktop_layout.columns;
 376             }
 377         }
 378         g_free(data);
 379     }
 380 }
 381
 382 void screen_update_desktop_names()
 383 {
 384     guint i;
 385
 386     /* empty the array */
 387     g_strfreev(screen_desktop_names);
 388     screen_desktop_names = NULL;
 389
 390     if (PROP_GETSS(ob_root, net_desktop_names, utf8, &screen_desktop_names))
 391         for (i = 0; screen_desktop_names[i] && i <= screen_num_desktops; ++i);
 392     else
 393         i = 0;
 394     if (i <= screen_num_desktops) {
 395         screen_desktop_names = g_renew(char*, screen_desktop_names,
 396                                        screen_num_desktops + 1);
 397         screen_desktop_names[screen_num_desktops] = NULL;
 398         for (; i < screen_num_desktops; ++i)
 399             screen_desktop_names[i] = g_strdup("Unnamed Desktop");
 400     }
 401 }
 402
 403 void screen_show_desktop(gboolean show)
 404 {
 405     GList *it;
 406
 407     if (show == screen_showing_desktop) return; /* no change */
 408
 409     screen_showing_desktop = show;
 410
 411     if (show) {
 412         /* bottom to top */
 413         for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 414             Client *client = it->data;
 415             if (client->frame->visible && !client_should_show(client))
 416                 frame_hide(client->frame);
 417         }
 418     } else {
 419         /* top to bottom */
 420         for (it = stacking_list; it != NULL; it = it->next) {
 421             Client *client = it->data;
 422             if (!client->frame->visible && client_should_show(client))
 423                 frame_show(client->frame);
 424         }
 425     }
 426
 427     show = !!show; /* make it boolean */
 428     PROP_SET32(ob_root, net_showing_desktop, cardinal, show);
 429
 430     dispatch_ob(Event_Ob_ShowDesktop, show, 0);
 431 }
 432
 433 void screen_install_colormap(Client *client, gboolean install)
 434 {
 435     XWindowAttributes wa;
 436
 437     if (client == NULL) {
 438         if (install)
 439             XInstallColormap(ob_display, render_colormap);
 440         else
 441             XUninstallColormap(ob_display, render_colormap);
 442     } else {
 443         if (XGetWindowAttributes(ob_display, client->window, &wa) &&
 444             wa.colormap != None) {
 445             if (install)
 446                 XInstallColormap(ob_display, wa.colormap);
 447             else
 448                 XUninstallColormap(ob_display, wa.colormap);
 449         }
 450     }
 451 }
 452
 453 void screen_update_struts()
 454 {
 455     GList *it;
 456     guint i;
 457
 458     g_free(strut);
 459     strut = g_new0(Strut, screen_num_desktops + 1);
 460
 461     for (it = client_list; it != NULL; it = it->next) {
 462         Client *c = it->data;
 463         if (c->iconic) continue; /* these dont count in the strut */
 464
 465         if (c->desktop == 0xffffffff) {
 466             for (i = 0; i < screen_num_desktops; ++i)
 467                 STRUT_ADD(strut[i], c->strut);
 468         } else {
 469             g_assert(c->desktop < screen_num_desktops);
 470             STRUT_ADD(strut[c->desktop], c->strut);
 471         }
 472         /* apply to the 'all desktops' strut */
 473         STRUT_ADD(strut[screen_num_desktops], c->strut);
 474     }
 475     screen_update_area();
 476 }
 477
 478 static void screen_update_area()
 479 {
 480     guint i;
 481     guint32 *dims;
 482
 483     g_free(area);
 484     area = g_new0(Rect, screen_num_desktops + 1);
 485
 486     dims = g_new(guint32, 4 * screen_num_desktops);
 487     for (i = 0; i < screen_num_desktops + 1; ++i) {
 488         Rect old_area = area[i];
 489 /*
 490   #ifdef    XINERAMA
 491   // reset to the full areas
 492   if (isXineramaActive())
 493   xineramaUsableArea = getXineramaAreas();
 494   #endif // XINERAMA
 495 */
 496
 497         RECT_SET(area[i], strut[i].left, strut[i].top,
 498                  screen_physical_size.width - (strut[i].left +
 499                                                strut[i].right),
 500                  screen_physical_size.height - (strut[i].top +
 501                                                 strut[i].bottom));
 502
 503 /*
 504   #ifdef    XINERAMA
 505   if (isXineramaActive()) {
 506   // keep each of the ximerama-defined areas inside the strut
 507   RectList::iterator xit, xend = xineramaUsableArea.end();
 508   for (xit = xineramaUsableArea.begin(); xit != xend; ++xit) {
 509   if (xit->x() < usableArea.x()) {
 510   xit->setX(usableArea.x());
 511   xit->setWidth(xit->width() - usableArea.x());
 512   }
 513   if (xit->y() < usableArea.y()) {
 514   xit->setY(usableArea.y());
 515   xit->setHeight(xit->height() - usableArea.y());
 516   }
 517   if (xit->x() + xit->width() > usableArea.width())
 518   xit->setWidth(usableArea.width() - xit->x());
 519   if (xit->y() + xit->height() > usableArea.height())
 520   xit->setHeight(usableArea.height() - xit->y());
 521   }
 522   }
 523   #endif // XINERAMA
 524 */
 525         if (!RECT_EQUAL(old_area, area[i])) {
 526             /* the area has changed, adjust all the maximized windows */
 527             GList *it;
 528             for (it = client_list; it; it = it->next) {
 529                 Client *c = it->data;
 530                 if (i < screen_num_desktops) {
 531                     if (c->desktop == i)
 532                         client_remaximize(c);
 533                 } else {
 534                     /* the 'all desktops' size */
 535                     if (c->desktop == DESKTOP_ALL)
 536                         client_remaximize(c);
 537                 }
 538             }
 539         }
 540
 541         /* don't set these for the 'all desktops' area */
 542         if (i < screen_num_desktops) {
 543             dims[(i * 4) + 0] = area[i].x;
 544             dims[(i * 4) + 1] = area[i].y;
 545             dims[(i * 4) + 2] = area[i].width;
 546             dims[(i * 4) + 3] = area[i].height;
 547         }
 548     }
 549     PROP_SETA32(ob_root, net_workarea, cardinal,
 550                 dims, 4 * screen_num_desktops);
 551     g_free(dims);
 552 }
 553
 554 Rect *screen_area(guint desktop)
 555 {
 556     if (desktop >= screen_num_desktops) {
 557         if (desktop == DESKTOP_ALL)
 558             return &area[screen_num_desktops];
 559         return NULL;
 560     }
 561     return &area[desktop];
 562 }
 563
 564 Strut *screen_strut(guint desktop)
 565 {
 566     if (desktop >= screen_num_desktops) {
 567         if (desktop == DESKTOP_ALL)
 568             return &strut[screen_num_desktops];
 569         return NULL;
 570     }
 571     return &strut[desktop];
 572 }