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 "engine.h"
   8 #include "focus.h"
   9 #include "dispatch.h"
  10 #include "../render/render.h"
  11
  12 #include <X11/Xlib.h>
  13 #ifdef HAVE_UNISTD_H
  14 #  include <sys/types.h>
  15 #  include <unistd.h>
  16 #endif
  17
  18 /*! The event mask to grab on the root window */
  19 #define ROOT_EVENTMASK (/*ColormapChangeMask |*/ PropertyChangeMask | \
  20                         EnterWindowMask | LeaveWindowMask | \
  21                         SubstructureNotifyMask | SubstructureRedirectMask | \
  22                         ButtonPressMask | ButtonReleaseMask | ButtonMotionMask)
  23
  24 guint    screen_num_desktops    = 0;
  25 guint    screen_desktop         = 0;
  26 Size     screen_physical_size;
  27 gboolean screen_showing_desktop;
  28 DesktopLayout screen_desktop_layout;
  29 GPtrArray *screen_desktop_names;
  30
  31 static Rect  *area = NULL;
  32 static Strut *strut = NULL;
  33 static Window support_window = None;
  34
  35 static void screen_update_area();
  36
  37 static gboolean running;
  38 static int another_running(Display *d, XErrorEvent *e)
  39 {
  40     (void)d;(void)e;
  41     g_message("A window manager is already running on screen %d",
  42               ob_screen);
  43     running = TRUE;
  44     return -1;
  45 }
  46
  47 gboolean screen_annex()
  48 {
  49     XErrorHandler old;
  50     pid_t pid;
  51     int i, num_support;
  52     Atom *supported;
  53
  54     running = FALSE;
  55     old = XSetErrorHandler(another_running);
  56     XSelectInput(ob_display, ob_root, ROOT_EVENTMASK);
  57     XSync(ob_display, FALSE);
  58     XSetErrorHandler(old);
  59     if (running)
  60         return FALSE;
  61
  62     g_message("Managing screen %d", ob_screen);
  63
  64     /* set the mouse cursor for the root window (the default cursor) */
  65     XDefineCursor(ob_display, ob_root, ob_cursors.left_ptr);
  66
  67     /* set the OPENBOX_PID hint */
  68     pid = getpid();
  69     PROP_SET32(ob_root, openbox_pid, cardinal, pid);
  70
  71     /* create the netwm support window */
  72     support_window = XCreateSimpleWindow(ob_display, ob_root, 0,0,1,1,0,0,0);
  73
  74     /* set supporting window */
  75     PROP_SET32(ob_root, net_supporting_wm_check, window, support_window);
  76
  77     /* set properties on the supporting window */
  78     PROP_SETS(support_window, net_wm_name, utf8, "Openbox");
  79     PROP_SET32(support_window, net_supporting_wm_check, window,support_window);
  80
  81     /* set the _NET_SUPPORTED_ATOMS hint */
  82     num_support = 48;
  83     i = 0;
  84     supported = g_new(Atom, num_support);
  85     supported[i++] = prop_atoms.net_current_desktop;
  86     supported[i++] = prop_atoms.net_number_of_desktops;
  87     supported[i++] = prop_atoms.net_desktop_geometry;
  88     supported[i++] = prop_atoms.net_desktop_viewport;
  89     supported[i++] = prop_atoms.net_active_window;
  90     supported[i++] = prop_atoms.net_workarea;
  91     supported[i++] = prop_atoms.net_client_list;
  92     supported[i++] = prop_atoms.net_client_list_stacking;
  93     supported[i++] = prop_atoms.net_desktop_names;
  94     supported[i++] = prop_atoms.net_close_window;
  95     supported[i++] = prop_atoms.net_desktop_layout;
  96     supported[i++] = prop_atoms.net_showing_desktop;
  97     supported[i++] = prop_atoms.net_wm_name;
  98     supported[i++] = prop_atoms.net_wm_visible_name;
  99     supported[i++] = prop_atoms.net_wm_icon_name;
 100     supported[i++] = prop_atoms.net_wm_visible_icon_name;
 101     supported[i++] = prop_atoms.net_wm_desktop;
 102     supported[i++] = prop_atoms.net_wm_strut;
 103     supported[i++] = prop_atoms.net_wm_window_type;
 104     supported[i++] = prop_atoms.net_wm_window_type_desktop;
 105     supported[i++] = prop_atoms.net_wm_window_type_dock;
 106     supported[i++] = prop_atoms.net_wm_window_type_toolbar;
 107     supported[i++] = prop_atoms.net_wm_window_type_menu;
 108     supported[i++] = prop_atoms.net_wm_window_type_utility;
 109     supported[i++] = prop_atoms.net_wm_window_type_splash;
 110     supported[i++] = prop_atoms.net_wm_window_type_dialog;
 111     supported[i++] = prop_atoms.net_wm_window_type_normal;
 112     supported[i++] = prop_atoms.net_wm_allowed_actions;
 113     supported[i++] = prop_atoms.net_wm_action_move;
 114     supported[i++] = prop_atoms.net_wm_action_resize;
 115     supported[i++] = prop_atoms.net_wm_action_minimize;
 116     supported[i++] = prop_atoms.net_wm_action_shade;
 117     supported[i++] = prop_atoms.net_wm_action_maximize_horz;
 118     supported[i++] = prop_atoms.net_wm_action_maximize_vert;
 119     supported[i++] = prop_atoms.net_wm_action_fullscreen;
 120     supported[i++] = prop_atoms.net_wm_action_change_desktop;
 121     supported[i++] = prop_atoms.net_wm_action_close;
 122     supported[i++] = prop_atoms.net_wm_state;
 123     supported[i++] = prop_atoms.net_wm_state_modal;
 124     supported[i++] = prop_atoms.net_wm_state_maximized_vert;
 125     supported[i++] = prop_atoms.net_wm_state_maximized_horz;
 126     supported[i++] = prop_atoms.net_wm_state_shaded;
 127     supported[i++] = prop_atoms.net_wm_state_skip_taskbar;
 128     supported[i++] = prop_atoms.net_wm_state_skip_pager;
 129     supported[i++] = prop_atoms.net_wm_state_hidden;
 130     supported[i++] = prop_atoms.net_wm_state_fullscreen;
 131     supported[i++] = prop_atoms.net_wm_state_above;
 132     supported[i++] = prop_atoms.net_wm_state_below;
 133     g_assert(i == num_support);
 134 /*
 135   supported[] = prop_atoms.net_wm_moveresize;
 136   supported[] = prop_atoms.net_wm_moveresize_size_topleft;
 137   supported[] = prop_atoms.net_wm_moveresize_size_topright;
 138   supported[] = prop_atoms.net_wm_moveresize_size_bottomleft;
 139   supported[] = prop_atoms.net_wm_moveresize_size_bottomright;
 140   supported[] = prop_atoms.net_wm_moveresize_move;
 141   supported[] = prop_atoms.net_wm_action_stick;
 142 */
 143
 144     PROP_SET32A(ob_root, net_supported, atom, supported, num_support);
 145     g_free(supported);
 146
 147     return TRUE;
 148 }
 149
 150 void screen_startup()
 151 {
 152     GSList *it;
 153
 154     screen_desktop_names = g_ptr_array_new();
 155
 156     /* get the initial size */
 157     screen_resize();
 158
 159     /* set the names */
 160     for (it = config_desktops_names; it; it = it->next)
 161         g_ptr_array_add(screen_desktop_names, it->data); /* dont strdup */
 162     PROP_SETSA(ob_root, net_desktop_names, utf8, screen_desktop_names);
 163     g_ptr_array_set_size(screen_desktop_names, 0); /* rm the ptrs so they dont
 164                                                       get frees when we
 165                                                       update the desktop
 166                                                       names */
 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     guint i;
 182
 183     XSelectInput(ob_display, ob_root, NoEventMask);
 184
 185     PROP_ERASE(ob_root, openbox_pid); /* we're not running here no more! */
 186     PROP_ERASE(ob_root, net_supported); /* not without us */
 187     PROP_ERASE(ob_root, net_showing_desktop); /* don't keep this mode */
 188
 189     XDestroyWindow(ob_display, support_window);
 190
 191     for (i = 0; i < screen_desktop_names->len; ++i)
 192         g_free(g_ptr_array_index(screen_desktop_names, i));
 193     g_ptr_array_free(screen_desktop_names, TRUE);
 194     g_free(strut);
 195     g_free(area);
 196 }
 197
 198 void screen_resize()
 199 {
 200     /* XXX RandR support here? */
 201     int geometry[2];
 202
 203     /* Set the _NET_DESKTOP_GEOMETRY hint */
 204     geometry[0] = WidthOfScreen(ScreenOfDisplay(ob_display, ob_screen));
 205     geometry[1] = HeightOfScreen(ScreenOfDisplay(ob_display, ob_screen));
 206     PROP_SET32A(ob_root, net_desktop_geometry, cardinal, geometry, 2);
 207     screen_physical_size.width = geometry[0];
 208     screen_physical_size.height = geometry[1];
 209
 210     if (ob_state == State_Starting)
 211         return;
 212
 213     screen_update_struts();
 214
 215     /* XXX adjust more stuff ? */
 216 }
 217
 218 void screen_set_num_desktops(guint num)
 219 {
 220     guint i, old;
 221     gulong *viewport;
 222     GList *it;
 223
 224     g_assert(num > 0);
 225
 226     old = screen_num_desktops;
 227     screen_num_desktops = num;
 228     PROP_SET32(ob_root, net_number_of_desktops, cardinal, num);
 229
 230     /* set the viewport hint */
 231     viewport = g_new0(gulong, num * 2);
 232     PROP_SET32A(ob_root, net_desktop_viewport, cardinal, viewport, num * 2);
 233     g_free(viewport);
 234
 235     /* change our struts/area to match */
 236     screen_update_struts();
 237
 238     /* the number of rows/columns will differ */
 239     screen_update_layout();
 240
 241     /* may be some unnamed desktops that we need to fill in with names */
 242     screen_update_desktop_names();
 243
 244     /* update the focus lists */
 245     /* free our lists for the desktops which have disappeared */
 246     for (i = num; i < old; ++i)
 247         g_list_free(focus_order[i]);
 248     /* realloc the array */
 249     focus_order = g_renew(GList*, focus_order, num);
 250     /* set the new lists to be empty */
 251     for (i = old; i < num; ++i)
 252         focus_order[i] = NULL;
 253
 254     /* move windows on desktops that will no longer exist! */
 255     for (it = client_list; it != NULL; it = it->next) {
 256         Client *c = it->data;
 257         if (c->desktop >= num)
 258             client_set_desktop(c, num - 1, FALSE);
 259     }
 260
 261     dispatch_ob(Event_Ob_NumDesktops, num, old);
 262
 263     /* change our desktop if we're on one that no longer exists! */
 264     if (screen_desktop >= screen_num_desktops)
 265         screen_set_desktop(num - 1);
 266 }
 267
 268 void screen_set_desktop(guint num)
 269 {
 270     GList *it;
 271     guint old;
 272     XEvent e;
 273
 274     g_assert(num < screen_num_desktops);
 275
 276     old = screen_desktop;
 277     screen_desktop = num;
 278     PROP_SET32(ob_root, net_current_desktop, cardinal, num);
 279
 280     if (old == num) return;
 281
 282     g_message("Moving to desktop %d", num+1);
 283
 284     /* show windows before hiding the rest to lessen the enter/leave events */
 285
 286     /* show windows from top to bottom */
 287     for (it = stacking_list; it != NULL; it = it->next) {
 288         Client *c = it->data;
 289         if (!c->frame->visible && client_should_show(c))
 290             engine_frame_show(c->frame);
 291     }
 292
 293     /* hide windows from bottom to top */
 294     for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 295         Client *c = it->data;
 296         if (c->frame->visible && !client_should_show(c))
 297             engine_frame_hide(c->frame);
 298     }
 299
 300     /* focus the last focused window on the desktop, and ignore enter events
 301        from the switch so it doesnt mess with the focus */
 302     XSync(ob_display, FALSE);
 303     while (XCheckTypedEvent(ob_display, EnterNotify, &e));
 304     focus_fallback(Fallback_Desktop);
 305
 306     dispatch_ob(Event_Ob_Desktop, num, old);
 307 }
 308
 309 void screen_update_layout()
 310 {
 311     unsigned long *data = NULL;
 312
 313     /* defaults */
 314     screen_desktop_layout.orientation = prop_atoms.net_wm_orientation_horz;
 315     screen_desktop_layout.start_corner = prop_atoms.net_wm_topleft;
 316     screen_desktop_layout.rows = 1;
 317     screen_desktop_layout.columns = screen_num_desktops;
 318
 319     if (PROP_GET32A(ob_root, net_desktop_layout, cardinal, data, 4)) {
 320         if (data[0] == prop_atoms.net_wm_orientation_vert)
 321             screen_desktop_layout.orientation = data[0];
 322         if (data[3] == prop_atoms.net_wm_topright)
 323             screen_desktop_layout.start_corner = data[3];
 324         else if (data[3] == prop_atoms.net_wm_bottomright)
 325             screen_desktop_layout.start_corner = data[3];
 326         else if (data[3] == prop_atoms.net_wm_bottomleft)
 327             screen_desktop_layout.start_corner = data[3];
 328
 329         /* fill in a zero rows/columns */
 330         if (!(data[1] == 0 && data[2] == 0)) { /* both 0's is bad data.. */
 331             if (data[1] == 0) {
 332                 data[1] = (screen_num_desktops +
 333                            screen_num_desktops % data[2]) / data[2];
 334             } else if (data[2] == 0) {
 335                 data[2] = (screen_num_desktops +
 336                            screen_num_desktops % data[1]) / data[1];
 337             }
 338             screen_desktop_layout.columns = data[1];
 339             screen_desktop_layout.rows = data[2];
 340         }
 341
 342         /* bounds checking */
 343         if (screen_desktop_layout.orientation ==
 344             prop_atoms.net_wm_orientation_horz) {
 345             if (screen_desktop_layout.rows > screen_num_desktops)
 346                 screen_desktop_layout.rows = screen_num_desktops;
 347             if (screen_desktop_layout.columns > ((screen_num_desktops +
 348                                                   screen_num_desktops %
 349                                                   screen_desktop_layout.rows) /
 350                                                  screen_desktop_layout.rows))
 351                 screen_desktop_layout.columns =
 352                     (screen_num_desktops + screen_num_desktops %
 353                      screen_desktop_layout.rows) /
 354                     screen_desktop_layout.rows;
 355         } else {
 356             if (screen_desktop_layout.columns > screen_num_desktops)
 357                 screen_desktop_layout.columns = screen_num_desktops;
 358             if (screen_desktop_layout.rows > ((screen_num_desktops +
 359                                                screen_num_desktops %
 360                                                screen_desktop_layout.columns) /
 361                                               screen_desktop_layout.columns))
 362                 screen_desktop_layout.rows =
 363                     (screen_num_desktops + screen_num_desktops %
 364                      screen_desktop_layout.columns) /
 365                     screen_desktop_layout.columns;
 366         }
 367         g_free(data);
 368     }
 369 }
 370
 371 void screen_update_desktop_names()
 372 {
 373     guint i;
 374
 375     /* empty the array */
 376     for (i = 0; i < screen_desktop_names->len; ++i)
 377         g_free(g_ptr_array_index(screen_desktop_names, i));
 378     g_ptr_array_set_size(screen_desktop_names, 0);
 379
 380     PROP_GETSA(ob_root, net_desktop_names, utf8, screen_desktop_names);
 381
 382     while (screen_desktop_names->len < screen_num_desktops)
 383         g_ptr_array_add(screen_desktop_names, g_strdup("Unnamed Desktop"));
 384 }
 385
 386 void screen_show_desktop(gboolean show)
 387 {
 388     GList *it;
 389
 390     if (show == screen_showing_desktop) return; /* no change */
 391
 392     screen_showing_desktop = show;
 393
 394     if (show) {
 395         /* bottom to top */
 396         for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 397             Client *client = it->data;
 398             if (client->frame->visible && !client_should_show(client))
 399                 engine_frame_hide(client->frame);
 400         }
 401     } else {
 402         /* top to bottom */
 403         for (it = stacking_list; it != NULL; it = it->next) {
 404             Client *client = it->data;
 405             if (!client->frame->visible && client_should_show(client))
 406                 engine_frame_show(client->frame);
 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     XWindowAttributes wa;
 419
 420     if (client == NULL) {
 421         if (install)
 422             XInstallColormap(ob_display, render_colormap);
 423         else
 424             XUninstallColormap(ob_display, render_colormap);
 425     } else {
 426         if (XGetWindowAttributes(ob_display, client->window, &wa) &&
 427             wa.colormap != None) {
 428             if (install)
 429                 XInstallColormap(ob_display, wa.colormap);
 430             else
 431                 XUninstallColormap(ob_display, wa.colormap);
 432         }
 433     }
 434 }
 435
 436 void screen_update_struts()
 437 {
 438     GList *it;
 439     guint i;
 440
 441     g_free(strut);
 442     strut = g_new0(Strut, screen_num_desktops + 1);
 443
 444     for (it = client_list; it != NULL; it = it->next) {
 445         Client *c = it->data;
 446         if (c->iconic) continue; /* these dont count in the strut */
 447
 448         if (c->desktop == 0xffffffff) {
 449             for (i = 0; i < screen_num_desktops; ++i)
 450                 STRUT_ADD(strut[i], c->strut);
 451         } else {
 452             g_assert(c->desktop < screen_num_desktops);
 453             STRUT_ADD(strut[c->desktop], c->strut);
 454         }
 455         /* apply to the 'all desktops' strut */
 456         STRUT_ADD(strut[screen_num_desktops], c->strut);
 457     }
 458     screen_update_area();
 459 }
 460
 461 static void screen_update_area()
 462 {
 463     guint i;
 464     gulong *dims;
 465
 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             GList *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 }