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.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(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     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     screen_desktop_names[i] = NULL;
 163     PROP_SETSS(ob_root, net_desktop_names, screen_desktop_names);
 164     g_free(screen_desktop_names); /* dont free the individual strings */
 165     screen_desktop_names = NULL;
 166
 167     screen_num_desktops = 0;
 168     screen_set_num_desktops(config_desktops_num);
 169     screen_desktop = 0;
 170     screen_set_desktop(0);
 171
 172     /* don't start in showing-desktop mode */
 173     screen_showing_desktop = FALSE;
 174     PROP_SET32(ob_root, net_showing_desktop, cardinal, screen_showing_desktop);
 175
 176     screen_update_layout();
 177 }
 178
 179 void screen_shutdown()
 180 {
 181     XSelectInput(ob_display, ob_root, NoEventMask);
 182
 183     PROP_ERASE(ob_root, openbox_pid); /* we're not running here no more! */
 184     PROP_ERASE(ob_root, net_supported); /* not without us */
 185     PROP_ERASE(ob_root, net_showing_desktop); /* don't keep this mode */
 186
 187     XDestroyWindow(ob_display, support_window);
 188
 189     g_strfreev(screen_desktop_names);
 190     g_free(strut);
 191     g_free(area);
 192 }
 193
 194 void screen_resize()
 195 {
 196     /* XXX RandR support here? */
 197     guint32 geometry[2];
 198
 199     /* Set the _NET_DESKTOP_GEOMETRY hint */
 200     geometry[0] = WidthOfScreen(ScreenOfDisplay(ob_display, ob_screen));
 201     geometry[1] = HeightOfScreen(ScreenOfDisplay(ob_display, ob_screen));
 202     PROP_SETA32(ob_root, net_desktop_geometry, cardinal, geometry, 2);
 203     screen_physical_size.width = geometry[0];
 204     screen_physical_size.height = geometry[1];
 205
 206     if (ob_state == State_Starting)
 207         return;
 208
 209     screen_update_struts();
 210
 211     /* XXX adjust more stuff ? */
 212 }
 213
 214 void screen_set_num_desktops(guint num)
 215 {
 216     guint i, old;
 217     guint32 *viewport;
 218     GList *it;
 219
 220     g_assert(num > 0);
 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(guint32, num * 2);
 228     PROP_SETA32(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     /* move windows on desktops that will no longer exist! */
 251     for (it = client_list; it != NULL; it = it->next) {
 252         Client *c = it->data;
 253         if (c->desktop >= num)
 254             client_set_desktop(c, num - 1, FALSE);
 255     }
 256
 257     dispatch_ob(Event_Ob_NumDesktops, num, old);
 258
 259     /* change our desktop if we're on one that no longer exists! */
 260     if (screen_desktop >= screen_num_desktops)
 261         screen_set_desktop(num - 1);
 262 }
 263
 264 void screen_set_desktop(guint num)
 265 {
 266     GList *it;
 267     guint old;
 268     XEvent e;
 269
 270     g_assert(num < screen_num_desktops);
 271
 272     old = screen_desktop;
 273     screen_desktop = num;
 274     PROP_SET32(ob_root, net_current_desktop, cardinal, num);
 275
 276     if (old == num) return;
 277
 278     g_message("Moving to desktop %d", num+1);
 279
 280     /* show windows before hiding the rest to lessen the enter/leave events */
 281
 282     /* show windows from top to bottom */
 283     for (it = stacking_list; it != NULL; it = it->next) {
 284         Client *c = it->data;
 285         if (!c->frame->visible && client_should_show(c))
 286             frame_show(c->frame);
 287     }
 288
 289     /* hide windows from bottom to top */
 290     for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 291         Client *c = it->data;
 292         if (c->frame->visible && !client_should_show(c))
 293             frame_hide(c->frame);
 294     }
 295
 296     /* focus the last focused window on the desktop, and ignore enter events
 297        from the switch so it doesnt mess with the focus */
 298     XSync(ob_display, FALSE);
 299     while (XCheckTypedEvent(ob_display, EnterNotify, &e));
 300     focus_fallback(Fallback_Desktop);
 301
 302     dispatch_ob(Event_Ob_Desktop, num, old);
 303 }
 304
 305 void screen_update_layout()
 306 {
 307     guint32 *data = NULL;
 308     guint num;
 309
 310     /* defaults */
 311     screen_desktop_layout.orientation = prop_atoms.net_wm_orientation_horz;
 312     screen_desktop_layout.start_corner = prop_atoms.net_wm_topleft;
 313     screen_desktop_layout.rows = 1;
 314     screen_desktop_layout.columns = screen_num_desktops;
 315
 316     if (PROP_GETA32(ob_root, net_desktop_layout, cardinal, &data, &num)) {
 317         if (num == 3 || num == 4) {
 318             if (data[0] == prop_atoms.net_wm_orientation_vert)
 319                 screen_desktop_layout.orientation = data[0];
 320             if (num == 3)
 321                 screen_desktop_layout.start_corner =
 322                     prop_atoms.net_wm_topright;
 323             else {
 324                 if (data[3] == prop_atoms.net_wm_topright)
 325                     screen_desktop_layout.start_corner = data[3];
 326                 else if (data[3] == prop_atoms.net_wm_bottomright)
 327                     screen_desktop_layout.start_corner = data[3];
 328                 else if (data[3] == prop_atoms.net_wm_bottomleft)
 329                     screen_desktop_layout.start_corner = data[3];
 330             }
 331
 332             /* fill in a zero rows/columns */
 333             if (!(data[1] == 0 && data[2] == 0)) { /* both 0's is bad data.. */
 334                 if (data[1] == 0) {
 335                     data[1] = (screen_num_desktops +
 336                                screen_num_desktops % data[2]) / data[2];
 337                 } else if (data[2] == 0) {
 338                     data[2] = (screen_num_desktops +
 339                                screen_num_desktops % data[1]) / data[1];
 340                 }
 341                 screen_desktop_layout.columns = data[1];
 342                 screen_desktop_layout.rows = data[2];
 343             }
 344
 345             /* bounds checking */
 346             if (screen_desktop_layout.orientation ==
 347                 prop_atoms.net_wm_orientation_horz) {
 348                 if (screen_desktop_layout.rows > screen_num_desktops)
 349                     screen_desktop_layout.rows = screen_num_desktops;
 350                 if (screen_desktop_layout.columns >
 351                     ((screen_num_desktops + screen_num_desktops %
 352                       screen_desktop_layout.rows) /
 353                      screen_desktop_layout.rows))
 354                     screen_desktop_layout.columns =
 355                         (screen_num_desktops + screen_num_desktops %
 356                          screen_desktop_layout.rows) /
 357                         screen_desktop_layout.rows;
 358             } else {
 359                 if (screen_desktop_layout.columns > screen_num_desktops)
 360                     screen_desktop_layout.columns = screen_num_desktops;
 361                 if (screen_desktop_layout.rows >
 362                     ((screen_num_desktops + screen_num_desktops %
 363                       screen_desktop_layout.columns) /
 364                      screen_desktop_layout.columns))
 365                     screen_desktop_layout.rows =
 366                         (screen_num_desktops + screen_num_desktops %
 367                          screen_desktop_layout.columns) /
 368                         screen_desktop_layout.columns;
 369             }
 370         }
 371         g_free(data);
 372     }
 373 }
 374
 375 void screen_update_desktop_names()
 376 {
 377     guint i;
 378
 379     /* empty the array */
 380     g_strfreev(screen_desktop_names);
 381     screen_desktop_names = NULL;
 382
 383     if (PROP_GETSS(ob_root, net_desktop_names, utf8, &screen_desktop_names))
 384         for (i = 0; screen_desktop_names[i] && i <= screen_num_desktops; ++i);
 385     else
 386         i = 0;
 387     if (i <= screen_num_desktops) {
 388         screen_desktop_names = g_renew(char*, screen_desktop_names,
 389                                        screen_num_desktops + 1);
 390         screen_desktop_names[screen_num_desktops] = NULL;
 391         for (; i < screen_num_desktops; ++i)
 392             screen_desktop_names[i] = g_strdup("Unnamed Desktop");
 393     }
 394 }
 395
 396 void screen_show_desktop(gboolean show)
 397 {
 398     GList *it;
 399
 400     if (show == screen_showing_desktop) return; /* no change */
 401
 402     screen_showing_desktop = show;
 403
 404     if (show) {
 405         /* bottom to top */
 406         for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 407             Client *client = it->data;
 408             if (client->frame->visible && !client_should_show(client))
 409                 frame_hide(client->frame);
 410         }
 411     } else {
 412         /* top to bottom */
 413         for (it = stacking_list; it != NULL; it = it->next) {
 414             Client *client = it->data;
 415             if (!client->frame->visible && client_should_show(client))
 416                 frame_show(client->frame);
 417         }
 418     }
 419
 420     show = !!show; /* make it boolean */
 421     PROP_SET32(ob_root, net_showing_desktop, cardinal, show);
 422
 423     dispatch_ob(Event_Ob_ShowDesktop, show, 0);
 424 }
 425
 426 void screen_install_colormap(Client *client, gboolean install)
 427 {
 428     XWindowAttributes wa;
 429
 430     if (client == NULL) {
 431         if (install)
 432             XInstallColormap(ob_display, render_colormap);
 433         else
 434             XUninstallColormap(ob_display, render_colormap);
 435     } else {
 436         if (XGetWindowAttributes(ob_display, client->window, &wa) &&
 437             wa.colormap != None) {
 438             if (install)
 439                 XInstallColormap(ob_display, wa.colormap);
 440             else
 441                 XUninstallColormap(ob_display, wa.colormap);
 442         }
 443     }
 444 }
 445
 446 void screen_update_struts()
 447 {
 448     GList *it;
 449     guint i;
 450
 451     g_free(strut);
 452     strut = g_new0(Strut, screen_num_desktops + 1);
 453
 454     for (it = client_list; it != NULL; it = it->next) {
 455         Client *c = it->data;
 456         if (c->iconic) continue; /* these dont count in the strut */
 457
 458         if (c->desktop == 0xffffffff) {
 459             for (i = 0; i < screen_num_desktops; ++i)
 460                 STRUT_ADD(strut[i], c->strut);
 461         } else {
 462             g_assert(c->desktop < screen_num_desktops);
 463             STRUT_ADD(strut[c->desktop], c->strut);
 464         }
 465         /* apply to the 'all desktops' strut */
 466         STRUT_ADD(strut[screen_num_desktops], c->strut);
 467     }
 468     screen_update_area();
 469 }
 470
 471 static void screen_update_area()
 472 {
 473     guint i;
 474     guint32 *dims;
 475
 476     g_free(area);
 477     area = g_new0(Rect, screen_num_desktops + 1);
 478
 479     dims = g_new(guint32, 4 * screen_num_desktops);
 480     for (i = 0; i < screen_num_desktops + 1; ++i) {
 481         Rect old_area = area[i];
 482 /*
 483   #ifdef    XINERAMA
 484   // reset to the full areas
 485   if (isXineramaActive())
 486   xineramaUsableArea = getXineramaAreas();
 487   #endif // XINERAMA
 488 */
 489
 490         RECT_SET(area[i], strut[i].left, strut[i].top,
 491                  screen_physical_size.width - (strut[i].left +
 492                                                strut[i].right),
 493                  screen_physical_size.height - (strut[i].top +
 494                                                 strut[i].bottom));
 495
 496 /*
 497   #ifdef    XINERAMA
 498   if (isXineramaActive()) {
 499   // keep each of the ximerama-defined areas inside the strut
 500   RectList::iterator xit, xend = xineramaUsableArea.end();
 501   for (xit = xineramaUsableArea.begin(); xit != xend; ++xit) {
 502   if (xit->x() < usableArea.x()) {
 503   xit->setX(usableArea.x());
 504   xit->setWidth(xit->width() - usableArea.x());
 505   }
 506   if (xit->y() < usableArea.y()) {
 507   xit->setY(usableArea.y());
 508   xit->setHeight(xit->height() - usableArea.y());
 509   }
 510   if (xit->x() + xit->width() > usableArea.width())
 511   xit->setWidth(usableArea.width() - xit->x());
 512   if (xit->y() + xit->height() > usableArea.height())
 513   xit->setHeight(usableArea.height() - xit->y());
 514   }
 515   }
 516   #endif // XINERAMA
 517 */
 518         if (!RECT_EQUAL(old_area, area[i])) {
 519             /* the area has changed, adjust all the maximized windows */
 520             GList *it;
 521             for (it = client_list; it; it = it->next) {
 522                 Client *c = it->data;
 523                 if (i < screen_num_desktops) {
 524                     if (c->desktop == i)
 525                         client_remaximize(c);
 526                 } else {
 527                     /* the 'all desktops' size */
 528                     if (c->desktop == DESKTOP_ALL)
 529                         client_remaximize(c);
 530                 }
 531             }
 532         }
 533
 534         /* don't set these for the 'all desktops' area */
 535         if (i < screen_num_desktops) {
 536             dims[(i * 4) + 0] = area[i].x;
 537             dims[(i * 4) + 1] = area[i].y;
 538             dims[(i * 4) + 2] = area[i].width;
 539             dims[(i * 4) + 3] = area[i].height;
 540         }
 541     }
 542     PROP_SETA32(ob_root, net_workarea, cardinal,
 543                 dims, 4 * screen_num_desktops);
 544     g_free(dims);
 545 }
 546
 547 Rect *screen_area(guint desktop)
 548 {
 549     if (desktop >= screen_num_desktops) {
 550         if (desktop == DESKTOP_ALL)
 551             return &area[screen_num_desktops];
 552         return NULL;
 553     }
 554     return &area[desktop];
 555 }
 556
 557 Strut *screen_strut(guint desktop)
 558 {
 559     if (desktop >= screen_num_desktops) {
 560         if (desktop == DESKTOP_ALL)
 561             return &strut[screen_num_desktops];
 562         return NULL;
 563     }
 564     return &strut[desktop];
 565 }