Dogcows Code - chaz/openbox/blob - 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    = 1;
  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     for (i = 0; i < screen_desktop_names->len; ++i)
 170         g_free(g_ptr_array_index(screen_desktop_names, i));
 171     g_ptr_array_free(screen_desktop_names, TRUE);
 172     g_free(strut);
 173     g_free(area);
 174 }
 175
 176 void screen_resize()
 177 {
 178     /* Set the _NET_DESKTOP_GEOMETRY hint */
 179     /* XXX RandR support here? */
 180     int geometry[2];
 181
 182     geometry[0] = WidthOfScreen(ScreenOfDisplay(ob_display, ob_screen));
 183     geometry[1] = HeightOfScreen(ScreenOfDisplay(ob_display, ob_screen));
 184     PROP_SET32A(ob_root, net_desktop_geometry, cardinal, geometry, 2);
 185     screen_physical_size.width = geometry[0];
 186     screen_physical_size.height = geometry[1];
 187
 188     if (ob_state == State_Starting)
 189         return;
 190
 191     screen_update_struts();
 192
 193     /* XXX adjust more stuff ? */
 194 }
 195
 196 void screen_set_num_desktops(guint num)
 197 {
 198     guint old;
 199     gulong *viewport;
 200
 201     g_assert(num > 0);
 202
 203     /* move windows on desktops that will no longer exist! */
 204     /* XXX
 205        std::list<Client*>::iterator it, end = clients.end();
 206        for (it = clients.begin(); it != end; ++it) {
 207        unsigned int d = (*it)->desktop();
 208        if (d >= num && d != 0xffffffff) {
 209        XEvent ce;
 210        ce.xclient.type = ClientMessage;
 211        ce.xclient.message_type = otk::Property::atoms.net_wm_desktop;
 212        ce.xclient.display = **otk::display;
 213        ce.xclient.window = (*it)->window();
 214        ce.xclient.format = 32;
 215        ce.xclient.data.l[0] = num - 1;
 216        XSendEvent(**otk::display, _info->rootWindow(), false,
 217        SubstructureNotifyMask | SubstructureRedirectMask, &ce);
 218        }
 219        }
 220     */
 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(gulong, num * 2);
 228     PROP_SET32A(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     dispatch_ob(Event_Ob_NumDesktops, num, old);
 241
 242     /* change our desktop if we're on one that no longer exists! */
 243     if (screen_desktop >= screen_num_desktops)
 244         screen_set_desktop(num - 1);
 245 }
 246
 247 void screen_set_desktop(guint num)
 248 {
 249     GList *it;
 250     guint old;
 251
 252     g_assert(num < screen_num_desktops);
 253
 254     g_message("Moving to desktop %u", num);
 255
 256     old = screen_desktop;
 257     screen_desktop = num;
 258     PROP_SET32(ob_root, net_current_desktop, cardinal, num);
 259
 260     if (old == num) return;
 261
 262     /* hide windows from bottom to top */
 263     for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 264         Client *c = it->data;
 265         if (c->frame->visible && !client_should_show(c))
 266             engine_frame_hide(c->frame);
 267     }
 268
 269     /* show windows from top to bottom */
 270     for (it = stacking_list; it != NULL; it = it->next) {
 271         Client *c = it->data;
 272         if (!c->frame->visible && client_should_show(c))
 273             engine_frame_show(c->frame);
 274     }
 275
 276     dispatch_ob(Event_Ob_Desktop, num, old);
 277 }
 278
 279 void screen_update_layout()
 280 {
 281     unsigned long *data = NULL;
 282
 283     /* defaults */
 284     screen_desktop_layout.orientation = prop_atoms.net_wm_orientation_horz;
 285     screen_desktop_layout.start_corner = prop_atoms.net_wm_topleft;
 286     screen_desktop_layout.rows = 1;
 287     screen_desktop_layout.columns = screen_num_desktops;
 288
 289     if (PROP_GET32A(ob_root, net_desktop_layout, cardinal, data, 4)) {
 290         if (data[0] == prop_atoms.net_wm_orientation_vert)
 291             screen_desktop_layout.orientation = data[0];
 292         if (data[3] == prop_atoms.net_wm_topright)
 293             screen_desktop_layout.start_corner = data[3];
 294         else if (data[3] == prop_atoms.net_wm_bottomright)
 295             screen_desktop_layout.start_corner = data[3];
 296         else if (data[3] == prop_atoms.net_wm_bottomleft)
 297             screen_desktop_layout.start_corner = data[3];
 298
 299         /* fill in a zero rows/columns */
 300         if (!(data[1] == 0 && data[2] == 0)) { /* both 0's is bad data.. */
 301             if (data[1] == 0) {
 302                 data[1] = (screen_num_desktops +
 303                            screen_num_desktops % data[2]) / data[2];
 304             } else if (data[2] == 0) {
 305                 data[2] = (screen_num_desktops +
 306                            screen_num_desktops % data[1]) / data[1];
 307             }
 308             screen_desktop_layout.columns = data[1];
 309             screen_desktop_layout.rows = data[2];
 310         }
 311
 312         /* bounds checking */
 313         if (screen_desktop_layout.orientation ==
 314             prop_atoms.net_wm_orientation_horz) {
 315             if (screen_desktop_layout.rows > screen_num_desktops)
 316                 screen_desktop_layout.rows = screen_num_desktops;
 317             if (screen_desktop_layout.columns > ((screen_num_desktops +
 318                                                   screen_num_desktops %
 319                                                   screen_desktop_layout.rows) /
 320                                                  screen_desktop_layout.rows))
 321                 screen_desktop_layout.columns =
 322                     (screen_num_desktops + screen_num_desktops %
 323                      screen_desktop_layout.rows) /
 324                     screen_desktop_layout.rows;
 325         } else {
 326             if (screen_desktop_layout.columns > screen_num_desktops)
 327                 screen_desktop_layout.columns = screen_num_desktops;
 328             if (screen_desktop_layout.rows > ((screen_num_desktops +
 329                                                screen_num_desktops %
 330                                                screen_desktop_layout.columns) /
 331                                               screen_desktop_layout.columns))
 332                 screen_desktop_layout.rows =
 333                     (screen_num_desktops + screen_num_desktops %
 334                      screen_desktop_layout.columns) /
 335                     screen_desktop_layout.columns;
 336         }
 337         g_free(data);
 338     }
 339 }
 340
 341 void screen_update_desktop_names()
 342 {
 343     guint i;
 344
 345     /* empty the array */
 346     for (i = 0; i < screen_desktop_names->len; ++i)
 347         g_free(g_ptr_array_index(screen_desktop_names, i));
 348     g_ptr_array_set_size(screen_desktop_names, 0);
 349
 350     PROP_GETSA(ob_root, net_desktop_names, utf8, screen_desktop_names);
 351
 352     while (screen_desktop_names->len < screen_num_desktops)
 353         g_ptr_array_add(screen_desktop_names, g_strdup("Unnamed Desktop"));
 354 }
 355
 356 void screen_show_desktop(gboolean show)
 357 {
 358     GList *it;
 359     static Window saved_focus = 0;
 360
 361     if (show == screen_showing_desktop) return; /* no change */
 362
 363     /* save the window focus, and restore it when leaving the show-desktop
 364        mode */
 365     if (show && focus_client)
 366         saved_focus = focus_client->window;
 367
 368     screen_showing_desktop = show;
 369
 370     if (show) {
 371         /* bottom to top */
 372         for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 373             Client *client = it->data;
 374             if (client->type == Type_Desktop)
 375                 client_focus(client);
 376             else if (client->frame->visible && !client_should_show(client))
 377                 engine_frame_hide(client->frame);
 378         }
 379     } else {
 380         /* top to bottom */
 381         for (it = stacking_list; it != NULL; it = it->next) {
 382             Client *client = it->data;
 383             if (!client->frame->visible && client_should_show(client))
 384                 engine_frame_show(client->frame);
 385         }
 386     }
 387
 388     if (!show) {
 389         Client *f = focus_client;
 390         if (!f || f->type == Type_Desktop) {
 391             Client *c = g_hash_table_lookup(client_map,
 392                                             (gpointer)saved_focus);
 393             if (c) client_focus(c);
 394         }
 395     }
 396
 397     show = !!show; /* make it boolean */
 398     PROP_SET32(ob_root, net_showing_desktop, cardinal, show);
 399
 400     dispatch_ob(Event_Ob_ShowDesktop, show, 0);
 401 }
 402
 403 void screen_install_colormap(Client *client, gboolean install)
 404 {
 405     if (client == NULL) {
 406         if (install)
 407             XInstallColormap(ob_display, render_colormap);
 408         else
 409             XUninstallColormap(ob_display, render_colormap);
 410     } else {
 411         XWindowAttributes wa;
 412         if (XGetWindowAttributes(ob_display, client->window, &wa)) {
 413             if (install)
 414                 XInstallColormap(ob_display, wa.colormap);
 415             else
 416                 XUninstallColormap(ob_display, wa.colormap);
 417         }
 418     }
 419 }
 420
 421 void screen_update_struts()
 422 {
 423     GSList *it;
 424     guint i;
 425
 426     if (strut != NULL)
 427         g_free(strut);
 428     strut = g_new0(Strut, screen_num_desktops + 1);
 429
 430     for (it = client_list; it; it = it->next) {
 431         Client *c = it->data;
 432         if (c->iconic) continue; /* these dont count in the strut */
 433
 434         if (c->desktop == 0xffffffff) {
 435             for (i = 0; i < screen_num_desktops; ++i)
 436                 STRUT_ADD(strut[i], c->strut);
 437         } else {
 438             g_assert(c->desktop < screen_num_desktops);
 439             STRUT_ADD(strut[c->desktop], c->strut);
 440         }
 441         /* apply to the 'all desktops' strut */
 442         STRUT_ADD(strut[screen_num_desktops], c->strut);
 443     }
 444     screen_update_area();
 445 }
 446
 447 static void screen_update_area()
 448 {
 449     guint i;
 450     gulong *dims;
 451
 452     if (area != NULL)
 453         g_free(area);
 454     area = g_new0(Rect, screen_num_desktops + 1);
 455
 456     dims = g_new(unsigned long, 4 * screen_num_desktops);
 457     for (i = 0; i < screen_num_desktops + 1; ++i) {
 458         Rect old_area = area[i];
 459 /*
 460   #ifdef    XINERAMA
 461   // reset to the full areas
 462   if (isXineramaActive())
 463   xineramaUsableArea = getXineramaAreas();
 464   #endif // XINERAMA
 465 */
 466
 467         RECT_SET(area[i], strut[i].left, strut[i].top,
 468                  screen_physical_size.width - (strut[i].left +
 469                                                strut[i].right),
 470                  screen_physical_size.height - (strut[i].top +
 471                                                 strut[i].bottom));
 472
 473 /*
 474   #ifdef    XINERAMA
 475   if (isXineramaActive()) {
 476   // keep each of the ximerama-defined areas inside the strut
 477   RectList::iterator xit, xend = xineramaUsableArea.end();
 478   for (xit = xineramaUsableArea.begin(); xit != xend; ++xit) {
 479   if (xit->x() < usableArea.x()) {
 480   xit->setX(usableArea.x());
 481   xit->setWidth(xit->width() - usableArea.x());
 482   }
 483   if (xit->y() < usableArea.y()) {
 484   xit->setY(usableArea.y());
 485   xit->setHeight(xit->height() - usableArea.y());
 486   }
 487   if (xit->x() + xit->width() > usableArea.width())
 488   xit->setWidth(usableArea.width() - xit->x());
 489   if (xit->y() + xit->height() > usableArea.height())
 490   xit->setHeight(usableArea.height() - xit->y());
 491   }
 492   }
 493   #endif // XINERAMA
 494 */
 495         if (!RECT_EQUAL(old_area, area[i])) {
 496             /* the area has changed, adjust all the maximized windows */
 497             GSList *it;
 498             for (it = client_list; it; it = it->next) {
 499                 Client *c = it->data;
 500                 if (i < screen_num_desktops) {
 501                     if (c->desktop == i)
 502                         client_remaximize(c);
 503                 } else {
 504                     /* the 'all desktops' size */
 505                     if (c->desktop == DESKTOP_ALL)
 506                         client_remaximize(c);
 507                 }
 508             }
 509         }
 510
 511         /* don't set these for the 'all desktops' area */
 512         if (i < screen_num_desktops) {
 513             dims[(i * 4) + 0] = area[i].x;
 514             dims[(i * 4) + 1] = area[i].y;
 515             dims[(i * 4) + 2] = area[i].width;
 516             dims[(i * 4) + 3] = area[i].height;
 517         }
 518     }
 519     PROP_SET32A(ob_root, net_workarea, cardinal,
 520                 dims, 4 * screen_num_desktops);
 521     g_free(dims);
 522 }
 523
 524 Rect *screen_area(guint desktop)
 525 {
 526     if (desktop >= screen_num_desktops) {
 527         if (desktop == DESKTOP_ALL)
 528             return &area[screen_num_desktops];
 529         return NULL;
 530     }
 531     return &area[desktop];
 532 }
 533
 534 Strut *screen_strut(guint desktop)
 535 {
 536     if (desktop >= screen_num_desktops) {
 537         if (desktop == DESKTOP_ALL)
 538             return &strut[screen_num_desktops];
 539         return NULL;
 540     }
 541     return &strut[desktop];
 542 }