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
 170     PROP_ERASE(ob_root, openbox_pid); /* we're not running here no more! */
 171
 172     for (i = 0; i < screen_desktop_names->len; ++i)
 173         g_free(g_ptr_array_index(screen_desktop_names, i));
 174     g_ptr_array_free(screen_desktop_names, TRUE);
 175     g_free(strut);
 176     g_free(area);
 177 }
 178
 179 void screen_resize()
 180 {
 181     /* Set the _NET_DESKTOP_GEOMETRY hint */
 182     /* XXX RandR support here? */
 183     int geometry[2];
 184
 185     geometry[0] = WidthOfScreen(ScreenOfDisplay(ob_display, ob_screen));
 186     geometry[1] = HeightOfScreen(ScreenOfDisplay(ob_display, ob_screen));
 187     PROP_SET32A(ob_root, net_desktop_geometry, cardinal, geometry, 2);
 188     screen_physical_size.width = geometry[0];
 189     screen_physical_size.height = geometry[1];
 190
 191     if (ob_state == State_Starting)
 192         return;
 193
 194     screen_update_struts();
 195
 196     /* XXX adjust more stuff ? */
 197 }
 198
 199 void screen_set_num_desktops(guint num)
 200 {
 201     guint i, old;
 202     gulong *viewport;
 203
 204     g_assert(num > 0);
 205
 206     /* move windows on desktops that will no longer exist! */
 207     /* XXX
 208        std::list<Client*>::iterator it, end = clients.end();
 209        for (it = clients.begin(); it != end; ++it) {
 210        unsigned int d = (*it)->desktop();
 211        if (d >= num && d != 0xffffffff) {
 212        XEvent ce;
 213        ce.xclient.type = ClientMessage;
 214        ce.xclient.message_type = otk::Property::atoms.net_wm_desktop;
 215        ce.xclient.display = **otk::display;
 216        ce.xclient.window = (*it)->window();
 217        ce.xclient.format = 32;
 218        ce.xclient.data.l[0] = num - 1;
 219        XSendEvent(**otk::display, _info->rootWindow(), false,
 220        SubstructureNotifyMask | SubstructureRedirectMask, &ce);
 221        }
 222        }
 223     */
 224
 225     old = screen_num_desktops;
 226     screen_num_desktops = num;
 227     PROP_SET32(ob_root, net_number_of_desktops, cardinal, num);
 228
 229     /* set the viewport hint */
 230     viewport = g_new0(gulong, num * 2);
 231     PROP_SET32A(ob_root, net_desktop_viewport, cardinal, viewport, num * 2);
 232     g_free(viewport);
 233
 234     /* change our struts/area to match */
 235     screen_update_struts();
 236
 237     /* the number of rows/columns will differ */
 238     screen_update_layout();
 239
 240     /* may be some unnamed desktops that we need to fill in with names */
 241     screen_update_desktop_names();
 242
 243     /* update the focus lists */
 244     /* free our lists for the desktops which have disappeared */
 245     for (i = num; i < old; ++i)
 246         g_list_free(focus_order[i]);
 247     /* realloc the array */
 248     focus_order = g_renew(GList*, focus_order, num);
 249     /* set the new lists to be empty */
 250     for (i = old; i < num; ++i)
 251         focus_order[i] = NULL;
 252
 253     dispatch_ob(Event_Ob_NumDesktops, num, old);
 254
 255     /* change our desktop if we're on one that no longer exists! */
 256     if (screen_desktop >= screen_num_desktops)
 257         screen_set_desktop(num - 1);
 258 }
 259
 260 void screen_set_desktop(guint num)
 261 {
 262     GList *it;
 263     guint old;
 264
 265     g_assert(num < screen_num_desktops);
 266
 267     g_message("Moving to desktop %u", num);
 268
 269     old = screen_desktop;
 270     screen_desktop = num;
 271     PROP_SET32(ob_root, net_current_desktop, cardinal, num);
 272
 273     if (old == num) return;
 274
 275     /* hide windows from bottom to top */
 276     for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 277         Client *c = it->data;
 278         if (c->frame->visible && !client_should_show(c))
 279             engine_frame_hide(c->frame);
 280     }
 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             engine_frame_show(c->frame);
 287     }
 288
 289     dispatch_ob(Event_Ob_Desktop, num, old);
 290 }
 291
 292 void screen_update_layout()
 293 {
 294     unsigned long *data = NULL;
 295
 296     /* defaults */
 297     screen_desktop_layout.orientation = prop_atoms.net_wm_orientation_horz;
 298     screen_desktop_layout.start_corner = prop_atoms.net_wm_topleft;
 299     screen_desktop_layout.rows = 1;
 300     screen_desktop_layout.columns = screen_num_desktops;
 301
 302     if (PROP_GET32A(ob_root, net_desktop_layout, cardinal, data, 4)) {
 303         if (data[0] == prop_atoms.net_wm_orientation_vert)
 304             screen_desktop_layout.orientation = data[0];
 305         if (data[3] == prop_atoms.net_wm_topright)
 306             screen_desktop_layout.start_corner = data[3];
 307         else if (data[3] == prop_atoms.net_wm_bottomright)
 308             screen_desktop_layout.start_corner = data[3];
 309         else if (data[3] == prop_atoms.net_wm_bottomleft)
 310             screen_desktop_layout.start_corner = data[3];
 311
 312         /* fill in a zero rows/columns */
 313         if (!(data[1] == 0 && data[2] == 0)) { /* both 0's is bad data.. */
 314             if (data[1] == 0) {
 315                 data[1] = (screen_num_desktops +
 316                            screen_num_desktops % data[2]) / data[2];
 317             } else if (data[2] == 0) {
 318                 data[2] = (screen_num_desktops +
 319                            screen_num_desktops % data[1]) / data[1];
 320             }
 321             screen_desktop_layout.columns = data[1];
 322             screen_desktop_layout.rows = data[2];
 323         }
 324
 325         /* bounds checking */
 326         if (screen_desktop_layout.orientation ==
 327             prop_atoms.net_wm_orientation_horz) {
 328             if (screen_desktop_layout.rows > screen_num_desktops)
 329                 screen_desktop_layout.rows = screen_num_desktops;
 330             if (screen_desktop_layout.columns > ((screen_num_desktops +
 331                                                   screen_num_desktops %
 332                                                   screen_desktop_layout.rows) /
 333                                                  screen_desktop_layout.rows))
 334                 screen_desktop_layout.columns =
 335                     (screen_num_desktops + screen_num_desktops %
 336                      screen_desktop_layout.rows) /
 337                     screen_desktop_layout.rows;
 338         } else {
 339             if (screen_desktop_layout.columns > screen_num_desktops)
 340                 screen_desktop_layout.columns = screen_num_desktops;
 341             if (screen_desktop_layout.rows > ((screen_num_desktops +
 342                                                screen_num_desktops %
 343                                                screen_desktop_layout.columns) /
 344                                               screen_desktop_layout.columns))
 345                 screen_desktop_layout.rows =
 346                     (screen_num_desktops + screen_num_desktops %
 347                      screen_desktop_layout.columns) /
 348                     screen_desktop_layout.columns;
 349         }
 350         g_free(data);
 351     }
 352 }
 353
 354 void screen_update_desktop_names()
 355 {
 356     guint i;
 357
 358     /* empty the array */
 359     for (i = 0; i < screen_desktop_names->len; ++i)
 360         g_free(g_ptr_array_index(screen_desktop_names, i));
 361     g_ptr_array_set_size(screen_desktop_names, 0);
 362
 363     PROP_GETSA(ob_root, net_desktop_names, utf8, screen_desktop_names);
 364
 365     while (screen_desktop_names->len < screen_num_desktops)
 366         g_ptr_array_add(screen_desktop_names, g_strdup("Unnamed Desktop"));
 367 }
 368
 369 void screen_show_desktop(gboolean show)
 370 {
 371     GList *it;
 372     static Window saved_focus = 0;
 373
 374     if (show == screen_showing_desktop) return; /* no change */
 375
 376     /* save the window focus, and restore it when leaving the show-desktop
 377        mode */
 378     if (show && focus_client)
 379         saved_focus = focus_client->window;
 380
 381     screen_showing_desktop = show;
 382
 383     if (show) {
 384         /* bottom to top */
 385         for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 386             Client *client = it->data;
 387             if (client->type == Type_Desktop)
 388                 client_focus(client);
 389             else if (client->frame->visible && !client_should_show(client))
 390                 engine_frame_hide(client->frame);
 391         }
 392     } else {
 393         /* top to bottom */
 394         for (it = stacking_list; it != NULL; it = it->next) {
 395             Client *client = it->data;
 396             if (!client->frame->visible && client_should_show(client))
 397                 engine_frame_show(client->frame);
 398         }
 399     }
 400
 401     if (!show) {
 402         Client *f = focus_client;
 403         if (!f || f->type == Type_Desktop) {
 404             Client *c = g_hash_table_lookup(client_map,
 405                                             (gpointer)saved_focus);
 406             if (c) client_focus(c);
 407         }
 408     }
 409
 410     show = !!show; /* make it boolean */
 411     PROP_SET32(ob_root, net_showing_desktop, cardinal, show);
 412
 413     dispatch_ob(Event_Ob_ShowDesktop, show, 0);
 414 }
 415
 416 void screen_install_colormap(Client *client, gboolean install)
 417 {
 418     if (client == NULL) {
 419         if (install)
 420             XInstallColormap(ob_display, render_colormap);
 421         else
 422             XUninstallColormap(ob_display, render_colormap);
 423     } else {
 424         XWindowAttributes wa;
 425         if (XGetWindowAttributes(ob_display, client->window, &wa)) {
 426             if (install)
 427                 XInstallColormap(ob_display, wa.colormap);
 428             else
 429                 XUninstallColormap(ob_display, wa.colormap);
 430         }
 431     }
 432 }
 433
 434 void screen_update_struts()
 435 {
 436     GSList *it;
 437     guint i;
 438
 439     if (strut != NULL)
 440         g_free(strut);
 441     strut = g_new0(Strut, screen_num_desktops + 1);
 442
 443     for (it = client_list; it; it = it->next) {
 444         Client *c = it->data;
 445         if (c->iconic) continue; /* these dont count in the strut */
 446
 447         if (c->desktop == 0xffffffff) {
 448             for (i = 0; i < screen_num_desktops; ++i)
 449                 STRUT_ADD(strut[i], c->strut);
 450         } else {
 451             g_assert(c->desktop < screen_num_desktops);
 452             STRUT_ADD(strut[c->desktop], c->strut);
 453         }
 454         /* apply to the 'all desktops' strut */
 455         STRUT_ADD(strut[screen_num_desktops], c->strut);
 456     }
 457     screen_update_area();
 458 }
 459
 460 static void screen_update_area()
 461 {
 462     guint i;
 463     gulong *dims;
 464
 465     if (area != NULL)
 466         g_free(area);
 467     area = g_new0(Rect, screen_num_desktops + 1);
 468
 469     dims = g_new(unsigned long, 4 * screen_num_desktops);
 470     for (i = 0; i < screen_num_desktops + 1; ++i) {
 471         Rect old_area = area[i];
 472 /*
 473   #ifdef    XINERAMA
 474   // reset to the full areas
 475   if (isXineramaActive())
 476   xineramaUsableArea = getXineramaAreas();
 477   #endif // XINERAMA
 478 */
 479
 480         RECT_SET(area[i], strut[i].left, strut[i].top,
 481                  screen_physical_size.width - (strut[i].left +
 482                                                strut[i].right),
 483                  screen_physical_size.height - (strut[i].top +
 484                                                 strut[i].bottom));
 485
 486 /*
 487   #ifdef    XINERAMA
 488   if (isXineramaActive()) {
 489   // keep each of the ximerama-defined areas inside the strut
 490   RectList::iterator xit, xend = xineramaUsableArea.end();
 491   for (xit = xineramaUsableArea.begin(); xit != xend; ++xit) {
 492   if (xit->x() < usableArea.x()) {
 493   xit->setX(usableArea.x());
 494   xit->setWidth(xit->width() - usableArea.x());
 495   }
 496   if (xit->y() < usableArea.y()) {
 497   xit->setY(usableArea.y());
 498   xit->setHeight(xit->height() - usableArea.y());
 499   }
 500   if (xit->x() + xit->width() > usableArea.width())
 501   xit->setWidth(usableArea.width() - xit->x());
 502   if (xit->y() + xit->height() > usableArea.height())
 503   xit->setHeight(usableArea.height() - xit->y());
 504   }
 505   }
 506   #endif // XINERAMA
 507 */
 508         if (!RECT_EQUAL(old_area, area[i])) {
 509             /* the area has changed, adjust all the maximized windows */
 510             GSList *it;
 511             for (it = client_list; it; it = it->next) {
 512                 Client *c = it->data;
 513                 if (i < screen_num_desktops) {
 514                     if (c->desktop == i)
 515                         client_remaximize(c);
 516                 } else {
 517                     /* the 'all desktops' size */
 518                     if (c->desktop == DESKTOP_ALL)
 519                         client_remaximize(c);
 520                 }
 521             }
 522         }
 523
 524         /* don't set these for the 'all desktops' area */
 525         if (i < screen_num_desktops) {
 526             dims[(i * 4) + 0] = area[i].x;
 527             dims[(i * 4) + 1] = area[i].y;
 528             dims[(i * 4) + 2] = area[i].width;
 529             dims[(i * 4) + 3] = area[i].height;
 530         }
 531     }
 532     PROP_SET32A(ob_root, net_workarea, cardinal,
 533                 dims, 4 * screen_num_desktops);
 534     g_free(dims);
 535 }
 536
 537 Rect *screen_area(guint desktop)
 538 {
 539     if (desktop >= screen_num_desktops) {
 540         if (desktop == DESKTOP_ALL)
 541             return &area[screen_num_desktops];
 542         return NULL;
 543     }
 544     return &area[desktop];
 545 }
 546
 547 Strut *screen_strut(guint desktop)
 548 {
 549     if (desktop >= screen_num_desktops) {
 550         if (desktop == DESKTOP_ALL)
 551             return &strut[screen_num_desktops];
 552         return NULL;
 553     }
 554     return &strut[desktop];
 555 }