openbox/screen.c

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