openbox/screen.c

   1 #include "openbox.h"
   2 #include "dock.h"
   3 #include "prop.h"
   4 #include "startup.h"
   5 #include "config.h"
   6 #include "screen.h"
   7 #include "client.h"
   8 #include "frame.h"
   9 #include "focus.h"
  10 #include "dispatch.h"
  11 #include "extensions.h"
  12 #include "../render/render.h"
  13
  14 #include <X11/Xlib.h>
  15 #ifdef HAVE_UNISTD_H
  16 #  include <sys/types.h>
  17 #  include <unistd.h>
  18 #endif
  19
  20 /*! The event mask to grab on the root window */
  21 #define ROOT_EVENTMASK (StructureNotifyMask | PropertyChangeMask | \
  22                         EnterWindowMask | LeaveWindowMask | \
  23                         SubstructureNotifyMask | SubstructureRedirectMask | \
  24                         ButtonPressMask | ButtonReleaseMask | ButtonMotionMask)
  25
  26 guint    screen_num_desktops    = 0;
  27 guint    screen_desktop         = 0;
  28 Size     screen_physical_size;
  29 gboolean screen_showing_desktop;
  30 DesktopLayout screen_desktop_layout;
  31 char   **screen_desktop_names = NULL;
  32
  33 static Rect  *area = NULL;
  34 static Strut *strut = NULL;
  35 static Window support_window = None;
  36
  37 static void screen_update_area();
  38
  39 static gboolean running;
  40 static int another_running(Display *d, XErrorEvent *e)
  41 {
  42     (void)d;(void)e;
  43     g_message("A window manager is already running on screen %d",
  44               ob_screen);
  45     running = TRUE;
  46     return -1;
  47 }
  48
  49 gboolean screen_annex()
  50 {
  51     XErrorHandler old;
  52     pid_t pid;
  53     int i, num_support;
  54     guint32 *supported;
  55
  56     running = FALSE;
  57     old = XSetErrorHandler(another_running);
  58     XSelectInput(ob_display, ob_root, ROOT_EVENTMASK);
  59     XSync(ob_display, FALSE);
  60     XSetErrorHandler(old);
  61     if (running)
  62         return FALSE;
  63
  64     g_message("Managing screen %d", ob_screen);
  65
  66     /* set the mouse cursor for the root window (the default cursor) */
  67     XDefineCursor(ob_display, ob_root, ob_cursors.ptr);
  68
  69     /* set the OPENBOX_PID hint */
  70     pid = getpid();
  71     PROP_SET32(ob_root, openbox_pid, cardinal, pid);
  72
  73     /* create the netwm support window */
  74     support_window = XCreateSimpleWindow(ob_display, ob_root, 0,0,1,1,0,0,0);
  75
  76     /* set supporting window */
  77     PROP_SET32(ob_root, net_supporting_wm_check, window, support_window);
  78
  79     /* set properties on the supporting window */
  80     PROP_SETS(support_window, net_wm_name, "Openbox");
  81     PROP_SET32(support_window, net_supporting_wm_check, window,support_window);
  82
  83     /* set the _NET_SUPPORTED_ATOMS hint */
  84     num_support = 61;
  85     i = 0;
  86     supported = g_new(guint32, num_support);
  87     supported[i++] = prop_atoms.net_current_desktop;
  88     supported[i++] = prop_atoms.net_number_of_desktops;
  89     supported[i++] = prop_atoms.net_desktop_geometry;
  90     supported[i++] = prop_atoms.net_desktop_viewport;
  91     supported[i++] = prop_atoms.net_active_window;
  92     supported[i++] = prop_atoms.net_workarea;
  93     supported[i++] = prop_atoms.net_client_list;
  94     supported[i++] = prop_atoms.net_client_list_stacking;
  95     supported[i++] = prop_atoms.net_desktop_names;
  96     supported[i++] = prop_atoms.net_close_window;
  97     supported[i++] = prop_atoms.net_desktop_layout;
  98     supported[i++] = prop_atoms.net_showing_desktop;
  99     supported[i++] = prop_atoms.net_wm_name;
 100     supported[i++] = prop_atoms.net_wm_visible_name;
 101     supported[i++] = prop_atoms.net_wm_icon_name;
 102     supported[i++] = prop_atoms.net_wm_visible_icon_name;
 103     supported[i++] = prop_atoms.net_wm_desktop;
 104     supported[i++] = prop_atoms.net_wm_strut;
 105     supported[i++] = prop_atoms.net_wm_window_type;
 106     supported[i++] = prop_atoms.net_wm_window_type_desktop;
 107     supported[i++] = prop_atoms.net_wm_window_type_dock;
 108     supported[i++] = prop_atoms.net_wm_window_type_toolbar;
 109     supported[i++] = prop_atoms.net_wm_window_type_menu;
 110     supported[i++] = prop_atoms.net_wm_window_type_utility;
 111     supported[i++] = prop_atoms.net_wm_window_type_splash;
 112     supported[i++] = prop_atoms.net_wm_window_type_dialog;
 113     supported[i++] = prop_atoms.net_wm_window_type_normal;
 114     supported[i++] = prop_atoms.net_wm_allowed_actions;
 115     supported[i++] = prop_atoms.net_wm_action_move;
 116     supported[i++] = prop_atoms.net_wm_action_resize;
 117     supported[i++] = prop_atoms.net_wm_action_minimize;
 118     supported[i++] = prop_atoms.net_wm_action_shade;
 119     supported[i++] = prop_atoms.net_wm_action_maximize_horz;
 120     supported[i++] = prop_atoms.net_wm_action_maximize_vert;
 121     supported[i++] = prop_atoms.net_wm_action_fullscreen;
 122     supported[i++] = prop_atoms.net_wm_action_change_desktop;
 123     supported[i++] = prop_atoms.net_wm_action_close;
 124     supported[i++] = prop_atoms.net_wm_state;
 125     supported[i++] = prop_atoms.net_wm_state_modal;
 126     supported[i++] = prop_atoms.net_wm_state_maximized_vert;
 127     supported[i++] = prop_atoms.net_wm_state_maximized_horz;
 128     supported[i++] = prop_atoms.net_wm_state_shaded;
 129     supported[i++] = prop_atoms.net_wm_state_skip_taskbar;
 130     supported[i++] = prop_atoms.net_wm_state_skip_pager;
 131     supported[i++] = prop_atoms.net_wm_state_hidden;
 132     supported[i++] = prop_atoms.net_wm_state_fullscreen;
 133     supported[i++] = prop_atoms.net_wm_state_above;
 134     supported[i++] = prop_atoms.net_wm_state_below;
 135     supported[i++] = prop_atoms.net_moveresize_window;
 136     supported[i++] = prop_atoms.net_wm_moveresize;
 137     supported[i++] = prop_atoms.net_wm_moveresize_size_topleft;
 138     supported[i++] = prop_atoms.net_wm_moveresize_size_top;
 139     supported[i++] = prop_atoms.net_wm_moveresize_size_topright;
 140     supported[i++] = prop_atoms.net_wm_moveresize_size_right;
 141     supported[i++] = prop_atoms.net_wm_moveresize_size_bottomright;
 142     supported[i++] = prop_atoms.net_wm_moveresize_size_bottom;
 143     supported[i++] = prop_atoms.net_wm_moveresize_size_bottomleft;
 144     supported[i++] = prop_atoms.net_wm_moveresize_size_left;
 145     supported[i++] = prop_atoms.net_wm_moveresize_move;
 146     supported[i++] = prop_atoms.net_wm_moveresize_size_keyboard;
 147     supported[i++] = prop_atoms.net_wm_moveresize_move_keyboard;
 148     g_assert(i == num_support);
 149 /*
 150   supported[] = prop_atoms.net_wm_action_stick;
 151 */
 152
 153     PROP_SETA32(ob_root, net_supported, atom, supported, num_support);
 154     g_free(supported);
 155
 156     return TRUE;
 157 }
 158
 159 void screen_startup()
 160 {
 161     GSList *it;
 162     guint i;
 163
 164     /* get the initial size */
 165     screen_resize(WidthOfScreen(ScreenOfDisplay(ob_display, ob_screen)),
 166                   HeightOfScreen(ScreenOfDisplay(ob_display, ob_screen)));
 167
 168     /* set the names */
 169     screen_desktop_names = g_new(char*,
 170                                  g_slist_length(config_desktops_names) + 1);
 171     for (i = 0, it = config_desktops_names; it; ++i, it = it->next)
 172         screen_desktop_names[i] = it->data; /* dont strdup */
 173     screen_desktop_names[i] = NULL;
 174     PROP_SETSS(ob_root, net_desktop_names, screen_desktop_names);
 175     g_free(screen_desktop_names); /* dont free the individual strings */
 176     screen_desktop_names = NULL;
 177
 178     screen_num_desktops = 0;
 179     screen_set_num_desktops(config_desktops_num);
 180     if (startup_desktop >= screen_num_desktops)
 181         startup_desktop = 0;
 182     screen_desktop = startup_desktop;
 183     screen_set_desktop(startup_desktop);
 184
 185     /* don't start in showing-desktop mode */
 186     screen_showing_desktop = FALSE;
 187     PROP_SET32(ob_root, net_showing_desktop, cardinal, screen_showing_desktop);
 188
 189     screen_update_layout();
 190 }
 191
 192 void screen_shutdown()
 193 {
 194     XSelectInput(ob_display, ob_root, NoEventMask);
 195
 196     PROP_ERASE(ob_root, openbox_pid); /* we're not running here no more! */
 197     PROP_ERASE(ob_root, net_supported); /* not without us */
 198     PROP_ERASE(ob_root, net_showing_desktop); /* don't keep this mode */
 199
 200     XDestroyWindow(ob_display, support_window);
 201
 202     g_strfreev(screen_desktop_names);
 203     g_free(strut);
 204     g_free(area);
 205 }
 206
 207 void screen_resize(int w, int h)
 208 {
 209     GList *it;
 210     guint32 geometry[2];
 211
 212     /* Set the _NET_DESKTOP_GEOMETRY hint */
 213     geometry[0] = w;
 214     geometry[1] = h;
 215     PROP_SETA32(ob_root, net_desktop_geometry, cardinal, geometry, 2);
 216     screen_physical_size.width = geometry[0];
 217     screen_physical_size.height = geometry[1];
 218
 219     if (ob_state == State_Starting)
 220         return;
 221
 222     dock_configure();
 223     screen_update_struts();
 224
 225     for (it = client_list; it; it = it->next)
 226         client_move_onscreen(it->data);
 227 }
 228
 229 void screen_set_num_desktops(guint num)
 230 {
 231     guint i, old;
 232     guint32 *viewport;
 233     GList *it;
 234
 235     g_assert(num > 0);
 236
 237     old = screen_num_desktops;
 238     screen_num_desktops = num;
 239     PROP_SET32(ob_root, net_number_of_desktops, cardinal, num);
 240
 241     /* set the viewport hint */
 242     viewport = g_new0(guint32, num * 2);
 243     PROP_SETA32(ob_root, net_desktop_viewport, cardinal, viewport, num * 2);
 244     g_free(viewport);
 245
 246     /* the number of rows/columns will differ */
 247     screen_update_layout();
 248
 249     /* may be some unnamed desktops that we need to fill in with names */
 250     screen_update_desktop_names();
 251
 252     /* update the focus lists */
 253     /* free our lists for the desktops which have disappeared */
 254     for (i = num; i < old; ++i)
 255         g_list_free(focus_order[i]);
 256     /* realloc the array */
 257     focus_order = g_renew(GList*, focus_order, num);
 258     /* set the new lists to be empty */
 259     for (i = old; i < num; ++i)
 260         focus_order[i] = NULL;
 261
 262     /* move windows on desktops that will no longer exist! */
 263     for (it = client_list; it != NULL; it = it->next) {
 264         Client *c = it->data;
 265         if (c->desktop >= num && c->desktop != DESKTOP_ALL)
 266             client_set_desktop(c, num - 1, FALSE);
 267     }
 268
 269     /* change our struts/area to match (after moving windows) */
 270     screen_update_struts();
 271
 272     dispatch_ob(Event_Ob_NumDesktops, num, old);
 273
 274     /* change our desktop if we're on one that no longer exists! */
 275     if (screen_desktop >= screen_num_desktops)
 276         screen_set_desktop(num - 1);
 277 }
 278
 279 void screen_set_desktop(guint num)
 280 {
 281     GList *it;
 282     guint old;
 283     XEvent e;
 284
 285     g_assert(num < screen_num_desktops);
 286
 287     old = screen_desktop;
 288     screen_desktop = num;
 289     PROP_SET32(ob_root, net_current_desktop, cardinal, num);
 290
 291     if (old == num) return;
 292
 293     g_message("Moving to desktop %d", num+1);
 294
 295     /* show windows before hiding the rest to lessen the enter/leave events */
 296
 297     /* show windows from top to bottom */
 298     for (it = stacking_list; it != NULL; it = it->next) {
 299         if (WINDOW_IS_CLIENT(it->data)) {
 300             Client *c = it->data;
 301             if (!c->frame->visible && client_should_show(c))
 302                 frame_show(c->frame);
 303         }
 304     }
 305
 306     /* hide windows from bottom to top */
 307     for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 308         if (WINDOW_IS_CLIENT(it->data)) {
 309             Client *c = it->data;
 310             if (c->frame->visible && !client_should_show(c))
 311                 frame_hide(c->frame);
 312         }
 313     }
 314
 315     /* focus the last focused window on the desktop, and ignore enter events
 316        from the switch so it doesnt mess with the focus */
 317     while (XCheckTypedEvent(ob_display, EnterNotify, &e));
 318     focus_fallback(Fallback_Desktop);
 319
 320     dispatch_ob(Event_Ob_Desktop, num, old);
 321 }
 322
 323 void screen_update_layout()
 324 {
 325     guint32 *data = NULL;
 326     guint num;
 327
 328     /* defaults */
 329     screen_desktop_layout.orientation = prop_atoms.net_wm_orientation_horz;
 330     screen_desktop_layout.start_corner = prop_atoms.net_wm_topleft;
 331     screen_desktop_layout.rows = 1;
 332     screen_desktop_layout.columns = screen_num_desktops;
 333
 334     if (PROP_GETA32(ob_root, net_desktop_layout, cardinal, &data, &num)) {
 335         if (num == 3 || num == 4) {
 336             if (data[0] == prop_atoms.net_wm_orientation_vert)
 337                 screen_desktop_layout.orientation = data[0];
 338             if (num == 3)
 339                 screen_desktop_layout.start_corner =
 340                     prop_atoms.net_wm_topright;
 341             else {
 342                 if (data[3] == prop_atoms.net_wm_topright)
 343                     screen_desktop_layout.start_corner = data[3];
 344                 else if (data[3] == prop_atoms.net_wm_bottomright)
 345                     screen_desktop_layout.start_corner = data[3];
 346                 else if (data[3] == prop_atoms.net_wm_bottomleft)
 347                     screen_desktop_layout.start_corner = data[3];
 348             }
 349
 350             /* fill in a zero rows/columns */
 351             if (!(data[1] == 0 && data[2] == 0)) { /* both 0's is bad data.. */
 352                 if (data[1] == 0) {
 353                     data[1] = (screen_num_desktops +
 354                                screen_num_desktops % data[2]) / data[2];
 355                 } else if (data[2] == 0) {
 356                     data[2] = (screen_num_desktops +
 357                                screen_num_desktops % data[1]) / data[1];
 358                 }
 359                 screen_desktop_layout.columns = data[1];
 360                 screen_desktop_layout.rows = data[2];
 361             }
 362
 363             /* bounds checking */
 364             if (screen_desktop_layout.orientation ==
 365                 prop_atoms.net_wm_orientation_horz) {
 366                 if (screen_desktop_layout.rows > screen_num_desktops)
 367                     screen_desktop_layout.rows = screen_num_desktops;
 368                 if (screen_desktop_layout.columns >
 369                     ((screen_num_desktops + screen_num_desktops %
 370                       screen_desktop_layout.rows) /
 371                      screen_desktop_layout.rows))
 372                     screen_desktop_layout.columns =
 373                         (screen_num_desktops + screen_num_desktops %
 374                          screen_desktop_layout.rows) /
 375                         screen_desktop_layout.rows;
 376             } else {
 377                 if (screen_desktop_layout.columns > screen_num_desktops)
 378                     screen_desktop_layout.columns = screen_num_desktops;
 379                 if (screen_desktop_layout.rows >
 380                     ((screen_num_desktops + screen_num_desktops %
 381                       screen_desktop_layout.columns) /
 382                      screen_desktop_layout.columns))
 383                     screen_desktop_layout.rows =
 384                         (screen_num_desktops + screen_num_desktops %
 385                          screen_desktop_layout.columns) /
 386                         screen_desktop_layout.columns;
 387             }
 388         }
 389         g_free(data);
 390     }
 391 }
 392
 393 void screen_update_desktop_names()
 394 {
 395     guint i;
 396
 397     /* empty the array */
 398     g_strfreev(screen_desktop_names);
 399     screen_desktop_names = NULL;
 400
 401     if (PROP_GETSS(ob_root, net_desktop_names, utf8, &screen_desktop_names))
 402         for (i = 0; screen_desktop_names[i] && i <= screen_num_desktops; ++i);
 403     else
 404         i = 0;
 405     if (i <= screen_num_desktops) {
 406         screen_desktop_names = g_renew(char*, screen_desktop_names,
 407                                        screen_num_desktops + 1);
 408         screen_desktop_names[screen_num_desktops] = NULL;
 409         for (; i < screen_num_desktops; ++i)
 410             screen_desktop_names[i] = g_strdup("Unnamed Desktop");
 411     }
 412 }
 413
 414 void screen_show_desktop(gboolean show)
 415 {
 416     GList *it;
 417
 418     if (show == screen_showing_desktop) return; /* no change */
 419
 420     screen_showing_desktop = show;
 421
 422     if (show) {
 423         /* bottom to top */
 424         for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 425             if (WINDOW_IS_CLIENT(it->data)) {
 426                 Client *client = it->data;
 427                 if (client->frame->visible && !client_should_show(client))
 428                     frame_hide(client->frame);
 429             }
 430         }
 431     } else {
 432         /* top to bottom */
 433         for (it = stacking_list; it != NULL; it = it->next) {
 434             if (WINDOW_IS_CLIENT(it->data)) {
 435                 Client *client = it->data;
 436                 if (!client->frame->visible && client_should_show(client))
 437                     frame_show(client->frame);
 438             }
 439         }
 440     }
 441
 442     if (show) {
 443         /* focus desktop */
 444         for (it = focus_order[screen_desktop]; it; it = it->next)
 445             if (((Client*)it->data)->type == Type_Desktop &&
 446                 client_focus(it->data))
 447                 break;
 448     } else {
 449         focus_fallback(Fallback_NoFocus);
 450     }
 451
 452     show = !!show; /* make it boolean */
 453     PROP_SET32(ob_root, net_showing_desktop, cardinal, show);
 454
 455     dispatch_ob(Event_Ob_ShowDesktop, show, 0);
 456 }
 457
 458 void screen_install_colormap(Client *client, gboolean install)
 459 {
 460     XWindowAttributes wa;
 461
 462     if (client == NULL) {
 463         if (install)
 464             XInstallColormap(ob_display, render_colormap);
 465         else
 466             XUninstallColormap(ob_display, render_colormap);
 467     } else {
 468         if (XGetWindowAttributes(ob_display, client->window, &wa) &&
 469             wa.colormap != None) {
 470             if (install)
 471                 XInstallColormap(ob_display, wa.colormap);
 472             else
 473                 XUninstallColormap(ob_display, wa.colormap);
 474         }
 475     }
 476 }
 477
 478 void screen_update_struts()
 479 {
 480     GList *it;
 481     guint i;
 482
 483     g_free(strut);
 484     strut = g_new0(Strut, screen_num_desktops + 1);
 485
 486     for (it = client_list; it != NULL; it = it->next) {
 487         Client *c = it->data;
 488         if (c->iconic) continue; /* these dont count in the strut */
 489
 490         if (c->desktop == 0xffffffff) {
 491             for (i = 0; i < screen_num_desktops; ++i)
 492                 STRUT_ADD(strut[i], c->strut);
 493         } else {
 494             g_assert(c->desktop < screen_num_desktops);
 495             STRUT_ADD(strut[c->desktop], c->strut);
 496         }
 497         /* apply to the 'all desktops' strut */
 498         STRUT_ADD(strut[screen_num_desktops], c->strut);
 499     }
 500     screen_update_area();
 501 }
 502
 503 static void screen_update_area()
 504 {
 505     guint i;
 506     guint32 *dims;
 507
 508     g_free(area);
 509     area = g_new0(Rect, screen_num_desktops + 1);
 510
 511     dims = g_new(guint32, 4 * screen_num_desktops);
 512     for (i = 0; i < screen_num_desktops + 1; ++i) {
 513         Rect old_area = area[i];
 514 /*
 515   #ifdef    XINERAMA
 516   // reset to the full areas
 517   if (isXineramaActive())
 518   xineramaUsableArea = getXineramaAreas();
 519   #endif // XINERAMA
 520 */
 521
 522         RECT_SET(area[i], strut[i].left, strut[i].top,
 523                  screen_physical_size.width - (strut[i].left +
 524                                                strut[i].right),
 525                  screen_physical_size.height - (strut[i].top +
 526                                                 strut[i].bottom));
 527
 528 /*
 529   #ifdef    XINERAMA
 530   if (isXineramaActive()) {
 531   // keep each of the ximerama-defined areas inside the strut
 532   RectList::iterator xit, xend = xineramaUsableArea.end();
 533   for (xit = xineramaUsableArea.begin(); xit != xend; ++xit) {
 534   if (xit->x() < usableArea.x()) {
 535   xit->setX(usableArea.x());
 536   xit->setWidth(xit->width() - usableArea.x());
 537   }
 538   if (xit->y() < usableArea.y()) {
 539   xit->setY(usableArea.y());
 540   xit->setHeight(xit->height() - usableArea.y());
 541   }
 542   if (xit->x() + xit->width() > usableArea.width())
 543   xit->setWidth(usableArea.width() - xit->x());
 544   if (xit->y() + xit->height() > usableArea.height())
 545   xit->setHeight(usableArea.height() - xit->y());
 546   }
 547   }
 548   #endif // XINERAMA
 549 */
 550         if (!RECT_EQUAL(old_area, area[i])) {
 551             /* the area has changed, adjust all the maximized windows */
 552             GList *it;
 553             for (it = client_list; it; it = it->next) {
 554                 Client *c = it->data;
 555                 if (i < screen_num_desktops) {
 556                     if (c->desktop == i)
 557                         client_remaximize(c);
 558                 } else {
 559                     /* the 'all desktops' size */
 560                     if (c->desktop == DESKTOP_ALL)
 561                         client_remaximize(c);
 562                 }
 563             }
 564         }
 565
 566         /* don't set these for the 'all desktops' area */
 567         if (i < screen_num_desktops) {
 568             dims[(i * 4) + 0] = area[i].x;
 569             dims[(i * 4) + 1] = area[i].y;
 570             dims[(i * 4) + 2] = area[i].width;
 571             dims[(i * 4) + 3] = area[i].height;
 572         }
 573     }
 574     PROP_SETA32(ob_root, net_workarea, cardinal,
 575                 dims, 4 * screen_num_desktops);
 576     g_free(dims);
 577 }
 578
 579 Rect *screen_area(guint desktop)
 580 {
 581     if (desktop >= screen_num_desktops) {
 582         if (desktop == DESKTOP_ALL)
 583             return &area[screen_num_desktops];
 584         return NULL;
 585     }
 586     return &area[desktop];
 587 }
 588
 589 Strut *screen_strut(guint desktop)
 590 {
 591     if (desktop >= screen_num_desktops) {
 592         if (desktop == DESKTOP_ALL)
 593             return &strut[screen_num_desktops];
 594         return NULL;
 595     }
 596     return &strut[desktop];
 597 }