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 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     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_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, utf8, "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(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     XSelectInput(ob_display, ob_root, NoEventMask);
 171
 172     PROP_ERASE(ob_root, openbox_pid); /* we're not running here no more! */
 173     PROP_ERASE(ob_root, net_supported); /* not without us */
 174     PROP_ERASE(ob_root, net_showing_desktop); /* don't keep this mode */
 175
 176     XDestroyWindow(ob_display, support_window);
 177
 178     for (i = 0; i < screen_desktop_names->len; ++i)
 179         g_free(g_ptr_array_index(screen_desktop_names, i));
 180     g_ptr_array_free(screen_desktop_names, TRUE);
 181     g_free(strut);
 182     g_free(area);
 183 }
 184
 185 void screen_resize()
 186 {
 187     /* XXX RandR support here? */
 188     int geometry[2];
 189
 190     /* Set the _NET_DESKTOP_GEOMETRY hint */
 191     geometry[0] = WidthOfScreen(ScreenOfDisplay(ob_display, ob_screen));
 192     geometry[1] = HeightOfScreen(ScreenOfDisplay(ob_display, ob_screen));
 193     PROP_SET32A(ob_root, net_desktop_geometry, cardinal, geometry, 2);
 194     screen_physical_size.width = geometry[0];
 195     screen_physical_size.height = geometry[1];
 196
 197     if (ob_state == State_Starting)
 198         return;
 199
 200     screen_update_struts();
 201
 202     /* XXX adjust more stuff ? */
 203 }
 204
 205 void screen_set_num_desktops(guint num)
 206 {
 207     guint i, old;
 208     gulong *viewport;
 209
 210     g_assert(num > 0);
 211
 212     /* move windows on desktops that will no longer exist! */
 213     /* XXX
 214        std::list<Client*>::iterator it, end = clients.end();
 215        for (it = clients.begin(); it != end; ++it) {
 216        unsigned int d = (*it)->desktop();
 217        if (d >= num && d != 0xffffffff) {
 218        XEvent ce;
 219        ce.xclient.type = ClientMessage;
 220        ce.xclient.message_type = otk::Property::atoms.net_wm_desktop;
 221        ce.xclient.display = **otk::display;
 222        ce.xclient.window = (*it)->window();
 223        ce.xclient.format = 32;
 224        ce.xclient.data.l[0] = num - 1;
 225        XSendEvent(**otk::display, _info->rootWindow(), false,
 226        SubstructureNotifyMask | SubstructureRedirectMask, &ce);
 227        }
 228        }
 229     */
 230
 231     old = screen_num_desktops;
 232     screen_num_desktops = num;
 233     PROP_SET32(ob_root, net_number_of_desktops, cardinal, num);
 234
 235     /* set the viewport hint */
 236     viewport = g_new0(gulong, num * 2);
 237     PROP_SET32A(ob_root, net_desktop_viewport, cardinal, viewport, num * 2);
 238     g_free(viewport);
 239
 240     /* change our struts/area to match */
 241     screen_update_struts();
 242
 243     /* the number of rows/columns will differ */
 244     screen_update_layout();
 245
 246     /* may be some unnamed desktops that we need to fill in with names */
 247     screen_update_desktop_names();
 248
 249     /* update the focus lists */
 250     /* free our lists for the desktops which have disappeared */
 251     for (i = num; i < old; ++i)
 252         g_list_free(focus_order[i]);
 253     /* realloc the array */
 254     focus_order = g_renew(GList*, focus_order, num);
 255     /* set the new lists to be empty */
 256     for (i = old; i < num; ++i)
 257         focus_order[i] = NULL;
 258
 259     dispatch_ob(Event_Ob_NumDesktops, num, old);
 260
 261     /* change our desktop if we're on one that no longer exists! */
 262     if (screen_desktop >= screen_num_desktops)
 263         screen_set_desktop(num - 1);
 264 }
 265
 266 void screen_set_desktop(guint num)
 267 {
 268     GList *it;
 269     guint old;
 270
 271     g_assert(num < screen_num_desktops);
 272
 273     g_message("Moving to desktop %u", num);
 274
 275     old = screen_desktop;
 276     screen_desktop = num;
 277     PROP_SET32(ob_root, net_current_desktop, cardinal, num);
 278
 279     if (old == num) return;
 280
 281     /* show windows before hiding the rest to lessen the enter/leave events */
 282
 283     /* show windows from top to bottom */
 284     for (it = stacking_list; it != NULL; it = it->next) {
 285         Client *c = it->data;
 286         if (!c->frame->visible && client_should_show(c))
 287             engine_frame_show(c->frame);
 288     }
 289
 290     /* hide windows from bottom to top */
 291     for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 292         Client *c = it->data;
 293         if (c->frame->visible && !client_should_show(c))
 294             engine_frame_hide(c->frame);
 295     }
 296
 297     dispatch_ob(Event_Ob_Desktop, num, old);
 298 }
 299
 300 void screen_update_layout()
 301 {
 302     unsigned long *data = NULL;
 303
 304     /* defaults */
 305     screen_desktop_layout.orientation = prop_atoms.net_wm_orientation_horz;
 306     screen_desktop_layout.start_corner = prop_atoms.net_wm_topleft;
 307     screen_desktop_layout.rows = 1;
 308     screen_desktop_layout.columns = screen_num_desktops;
 309
 310     if (PROP_GET32A(ob_root, net_desktop_layout, cardinal, data, 4)) {
 311         if (data[0] == prop_atoms.net_wm_orientation_vert)
 312             screen_desktop_layout.orientation = data[0];
 313         if (data[3] == prop_atoms.net_wm_topright)
 314             screen_desktop_layout.start_corner = data[3];
 315         else if (data[3] == prop_atoms.net_wm_bottomright)
 316             screen_desktop_layout.start_corner = data[3];
 317         else if (data[3] == prop_atoms.net_wm_bottomleft)
 318             screen_desktop_layout.start_corner = data[3];
 319
 320         /* fill in a zero rows/columns */
 321         if (!(data[1] == 0 && data[2] == 0)) { /* both 0's is bad data.. */
 322             if (data[1] == 0) {
 323                 data[1] = (screen_num_desktops +
 324                            screen_num_desktops % data[2]) / data[2];
 325             } else if (data[2] == 0) {
 326                 data[2] = (screen_num_desktops +
 327                            screen_num_desktops % data[1]) / data[1];
 328             }
 329             screen_desktop_layout.columns = data[1];
 330             screen_desktop_layout.rows = data[2];
 331         }
 332
 333         /* bounds checking */
 334         if (screen_desktop_layout.orientation ==
 335             prop_atoms.net_wm_orientation_horz) {
 336             if (screen_desktop_layout.rows > screen_num_desktops)
 337                 screen_desktop_layout.rows = screen_num_desktops;
 338             if (screen_desktop_layout.columns > ((screen_num_desktops +
 339                                                   screen_num_desktops %
 340                                                   screen_desktop_layout.rows) /
 341                                                  screen_desktop_layout.rows))
 342                 screen_desktop_layout.columns =
 343                     (screen_num_desktops + screen_num_desktops %
 344                      screen_desktop_layout.rows) /
 345                     screen_desktop_layout.rows;
 346         } else {
 347             if (screen_desktop_layout.columns > screen_num_desktops)
 348                 screen_desktop_layout.columns = screen_num_desktops;
 349             if (screen_desktop_layout.rows > ((screen_num_desktops +
 350                                                screen_num_desktops %
 351                                                screen_desktop_layout.columns) /
 352                                               screen_desktop_layout.columns))
 353                 screen_desktop_layout.rows =
 354                     (screen_num_desktops + screen_num_desktops %
 355                      screen_desktop_layout.columns) /
 356                     screen_desktop_layout.columns;
 357         }
 358         g_free(data);
 359     }
 360 }
 361
 362 void screen_update_desktop_names()
 363 {
 364     guint i;
 365
 366     /* empty the array */
 367     for (i = 0; i < screen_desktop_names->len; ++i)
 368         g_free(g_ptr_array_index(screen_desktop_names, i));
 369     g_ptr_array_set_size(screen_desktop_names, 0);
 370
 371     PROP_GETSA(ob_root, net_desktop_names, utf8, screen_desktop_names);
 372
 373     while (screen_desktop_names->len < screen_num_desktops)
 374         g_ptr_array_add(screen_desktop_names, g_strdup("Unnamed Desktop"));
 375 }
 376
 377 void screen_show_desktop(gboolean show)
 378 {
 379     GList *it;
 380
 381     if (show == screen_showing_desktop) return; /* no change */
 382
 383     screen_showing_desktop = show;
 384
 385     if (show) {
 386         /* bottom to top */
 387         for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 388             Client *client = it->data;
 389             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     show = !!show; /* make it boolean */
 402     PROP_SET32(ob_root, net_showing_desktop, cardinal, show);
 403
 404     dispatch_ob(Event_Ob_ShowDesktop, show, 0);
 405 }
 406
 407 void screen_install_colormap(Client *client, gboolean install)
 408 {
 409     XWindowAttributes wa;
 410
 411     if (client == NULL) {
 412         if (install)
 413             XInstallColormap(ob_display, render_colormap);
 414         else
 415             XUninstallColormap(ob_display, render_colormap);
 416     } else {
 417         if (XGetWindowAttributes(ob_display, client->window, &wa) &&
 418             wa.colormap != None) {
 419             if (install)
 420                 XInstallColormap(ob_display, wa.colormap);
 421             else
 422                 XUninstallColormap(ob_display, wa.colormap);
 423         }
 424     }
 425 }
 426
 427 void screen_update_struts()
 428 {
 429     GSList *it;
 430     guint i;
 431
 432     g_free(strut);
 433     strut = g_new0(Strut, screen_num_desktops + 1);
 434
 435     for (it = client_list; it; it = it->next) {
 436         Client *c = it->data;
 437         if (c->iconic) continue; /* these dont count in the strut */
 438
 439         if (c->desktop == 0xffffffff) {
 440             for (i = 0; i < screen_num_desktops; ++i)
 441                 STRUT_ADD(strut[i], c->strut);
 442         } else {
 443             g_assert(c->desktop < screen_num_desktops);
 444             STRUT_ADD(strut[c->desktop], c->strut);
 445         }
 446         /* apply to the 'all desktops' strut */
 447         STRUT_ADD(strut[screen_num_desktops], c->strut);
 448     }
 449     screen_update_area();
 450 }
 451
 452 static void screen_update_area()
 453 {
 454     guint i;
 455     gulong *dims;
 456
 457     g_free(area);
 458     area = g_new0(Rect, screen_num_desktops + 1);
 459
 460     dims = g_new(unsigned long, 4 * screen_num_desktops);
 461     for (i = 0; i < screen_num_desktops + 1; ++i) {
 462         Rect old_area = area[i];
 463 /*
 464   #ifdef    XINERAMA
 465   // reset to the full areas
 466   if (isXineramaActive())
 467   xineramaUsableArea = getXineramaAreas();
 468   #endif // XINERAMA
 469 */
 470
 471         RECT_SET(area[i], strut[i].left, strut[i].top,
 472                  screen_physical_size.width - (strut[i].left +
 473                                                strut[i].right),
 474                  screen_physical_size.height - (strut[i].top +
 475                                                 strut[i].bottom));
 476
 477 /*
 478   #ifdef    XINERAMA
 479   if (isXineramaActive()) {
 480   // keep each of the ximerama-defined areas inside the strut
 481   RectList::iterator xit, xend = xineramaUsableArea.end();
 482   for (xit = xineramaUsableArea.begin(); xit != xend; ++xit) {
 483   if (xit->x() < usableArea.x()) {
 484   xit->setX(usableArea.x());
 485   xit->setWidth(xit->width() - usableArea.x());
 486   }
 487   if (xit->y() < usableArea.y()) {
 488   xit->setY(usableArea.y());
 489   xit->setHeight(xit->height() - usableArea.y());
 490   }
 491   if (xit->x() + xit->width() > usableArea.width())
 492   xit->setWidth(usableArea.width() - xit->x());
 493   if (xit->y() + xit->height() > usableArea.height())
 494   xit->setHeight(usableArea.height() - xit->y());
 495   }
 496   }
 497   #endif // XINERAMA
 498 */
 499         if (!RECT_EQUAL(old_area, area[i])) {
 500             /* the area has changed, adjust all the maximized windows */
 501             GSList *it;
 502             for (it = client_list; it; it = it->next) {
 503                 Client *c = it->data;
 504                 if (i < screen_num_desktops) {
 505                     if (c->desktop == i)
 506                         client_remaximize(c);
 507                 } else {
 508                     /* the 'all desktops' size */
 509                     if (c->desktop == DESKTOP_ALL)
 510                         client_remaximize(c);
 511                 }
 512             }
 513         }
 514
 515         /* don't set these for the 'all desktops' area */
 516         if (i < screen_num_desktops) {
 517             dims[(i * 4) + 0] = area[i].x;
 518             dims[(i * 4) + 1] = area[i].y;
 519             dims[(i * 4) + 2] = area[i].width;
 520             dims[(i * 4) + 3] = area[i].height;
 521         }
 522     }
 523     PROP_SET32A(ob_root, net_workarea, cardinal,
 524                 dims, 4 * screen_num_desktops);
 525     g_free(dims);
 526 }
 527
 528 Rect *screen_area(guint desktop)
 529 {
 530     if (desktop >= screen_num_desktops) {
 531         if (desktop == DESKTOP_ALL)
 532             return &area[screen_num_desktops];
 533         return NULL;
 534     }
 535     return &area[desktop];
 536 }
 537
 538 Strut *screen_strut(guint desktop)
 539 {
 540     if (desktop >= screen_num_desktops) {
 541         if (desktop == DESKTOP_ALL)
 542             return &strut[screen_num_desktops];
 543         return NULL;
 544     }
 545     return &strut[desktop];
 546 }