Dogcows Code - chaz/openbox/blob - openbox/place.c

   1 /* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
   2
   3    place.c for the Openbox window manager
   4    Copyright (c) 2006        Mikael Magnusson
   5    Copyright (c) 2003-2007   Dana Jansens
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    See the COPYING file for a copy of the GNU General Public License.
  18 */
  19
  20 #include "client.h"
  21 #include "group.h"
  22 #include "screen.h"
  23 #include "frame.h"
  24 #include "focus.h"
  25 #include "config.h"
  26 #include "dock.h"
  27 #include "debug.h"
  28
  29 extern ObDock *dock;
  30
  31 static void add_choice(guint *choice, guint mychoice)
  32 {
  33     guint i;
  34     for (i = 0; i < screen_num_monitors; ++i) {
  35         if (choice[i] == mychoice)
  36             return;
  37         else if (choice[i] == screen_num_monitors) {
  38             choice[i] = mychoice;
  39             return;
  40         }
  41     }
  42 }
  43
  44 static Rect *pick_pointer_head(ObClient *c)
  45 {
  46     return screen_area(c->desktop, screen_monitor_pointer(), NULL);
  47 }
  48
  49 /*! Pick a monitor to place a window on. */
  50 static Rect **pick_head(ObClient *c)
  51 {
  52     Rect **area;
  53     guint *choice;
  54     guint i;
  55     gint px, py;
  56     ObClient *p;
  57
  58     area = g_new(Rect*, screen_num_monitors);
  59     choice = g_new(guint, screen_num_monitors);
  60     for (i = 0; i < screen_num_monitors; ++i)
  61         choice[i] = screen_num_monitors; /* make them all invalid to start */
  62
  63     /* try direct parent first */
  64     if ((p = client_direct_parent(c))) {
  65         add_choice(choice, client_monitor(p));
  66         ob_debug("placement adding choice %d for parent",
  67                  client_monitor(p));
  68     }
  69
  70     /* more than one window in its group (more than just this window) */
  71     if (client_has_group_siblings(c)) {
  72         GSList *it;
  73
  74         /* try on the client's desktop */
  75         for (it = c->group->members; it; it = g_slist_next(it)) {
  76             ObClient *itc = it->data;
  77             if (itc != c &&
  78                 (itc->desktop == c->desktop ||
  79                  itc->desktop == DESKTOP_ALL || c->desktop == DESKTOP_ALL))
  80             {
  81                 add_choice(choice, client_monitor(it->data));
  82                 ob_debug("placement adding choice %d for group sibling",
  83                          client_monitor(it->data));
  84             }
  85         }
  86
  87         /* try on all desktops */
  88         for (it = c->group->members; it; it = g_slist_next(it)) {
  89             ObClient *itc = it->data;
  90             if (itc != c) {
  91                 add_choice(choice, client_monitor(it->data));
  92                 ob_debug("placement adding choice %d for group sibling on "
  93                          "another desktop", client_monitor(it->data));
  94             }
  95         }
  96     }
  97
  98     /* skip this if placing by the mouse position */
  99     if (focus_client && client_normal(focus_client) &&
 100         config_place_monitor != OB_PLACE_MONITOR_MOUSE)
 101     {
 102         add_choice(choice, client_monitor(focus_client));
 103         ob_debug("placement adding choice %d for normal focused window",
 104                  client_monitor(focus_client));
 105     }
 106
 107     screen_pointer_pos(&px, &py);
 108
 109     for (i = 0; i < screen_num_monitors; i++) {
 110         const Rect *monitor = screen_physical_area_monitor(i);
 111         gboolean contain = RECT_CONTAINS(*monitor, px, py);
 112         if (contain) {
 113             add_choice(choice, i);
 114             ob_debug("placement adding choice %d for mouse pointer", i);
 115             break;
 116         }
 117     }
 118
 119     /* add any leftover choices */
 120     for (i = 0; i < screen_num_monitors; ++i)
 121         add_choice(choice, i);
 122
 123     for (i = 0; i < screen_num_monitors; ++i)
 124         area[i] = screen_area(c->desktop, choice[i], NULL);
 125
 126     g_free(choice);
 127
 128     return area;
 129 }
 130
 131 static gboolean place_random(ObClient *client, gint *x, gint *y)
 132 {
 133     gint l, r, t, b;
 134     Rect **areas;
 135     guint i;
 136
 137     areas = pick_head(client);
 138     i = (config_place_monitor != OB_PLACE_MONITOR_ANY) ?
 139         0 : g_random_int_range(0, screen_num_monitors);
 140
 141     l = areas[i]->x;
 142     t = areas[i]->y;
 143     r = areas[i]->x + areas[i]->width - client->frame->area.width;
 144     b = areas[i]->y + areas[i]->height - client->frame->area.height;
 145
 146     if (r > l) *x = g_random_int_range(l, r + 1);
 147     else       *x = areas[i]->x;
 148     if (b > t) *y = g_random_int_range(t, b + 1);
 149     else       *y = areas[i]->y;
 150
 151     for (i = 0; i < screen_num_monitors; ++i)
 152         g_slice_free(Rect, areas[i]);
 153     g_free(areas);
 154
 155     return TRUE;
 156 }
 157
 158 static GSList* area_add(GSList *list, Rect *a)
 159 {
 160     Rect *r = g_slice_new(Rect);
 161     *r = *a;
 162     return g_slist_prepend(list, r);
 163 }
 164
 165 static GSList* area_remove(GSList *list, Rect *a)
 166 {
 167     GSList *sit;
 168     GSList *result = NULL;
 169
 170     for (sit = list; sit; sit = g_slist_next(sit)) {
 171         Rect *r = sit->data;
 172
 173         if (!RECT_INTERSECTS_RECT(*r, *a)) {
 174             result = g_slist_prepend(result, r);
 175             /* dont free r, it's moved to the result list */
 176         } else {
 177             Rect isect, extra;
 178
 179             /* Use an intersection of a and r to determine the space
 180                around r that we can use.
 181
 182                NOTE: the spaces calculated can overlap.
 183             */
 184
 185             RECT_SET_INTERSECTION(isect, *r, *a);
 186
 187             if (RECT_LEFT(isect) > RECT_LEFT(*r)) {
 188                 RECT_SET(extra, r->x, r->y,
 189                          RECT_LEFT(isect) - r->x, r->height);
 190                 result = area_add(result, &extra);
 191             }
 192
 193             if (RECT_TOP(isect) > RECT_TOP(*r)) {
 194                 RECT_SET(extra, r->x, r->y,
 195                          r->width, RECT_TOP(isect) - r->y + 1);
 196                 result = area_add(result, &extra);
 197             }
 198
 199             if (RECT_RIGHT(isect) < RECT_RIGHT(*r)) {
 200                 RECT_SET(extra, RECT_RIGHT(isect) + 1, r->y,
 201                          RECT_RIGHT(*r) - RECT_RIGHT(isect), r->height);
 202                 result = area_add(result, &extra);
 203             }
 204
 205             if (RECT_BOTTOM(isect) < RECT_BOTTOM(*r)) {
 206                 RECT_SET(extra, r->x, RECT_BOTTOM(isect) + 1,
 207                          r->width, RECT_BOTTOM(*r) - RECT_BOTTOM(isect));
 208                 result = area_add(result, &extra);
 209             }
 210
 211             /* 'r' is not being added to the result list, so free it */
 212             g_slice_free(Rect, r);
 213         }
 214     }
 215     g_slist_free(list);
 216     return result;
 217 }
 218
 219 enum {
 220     IGNORE_FULLSCREEN = 1,
 221     IGNORE_MAXIMIZED  = 2,
 222     IGNORE_MENUTOOL   = 3,
 223     /*IGNORE_SHADED     = 3,*/
 224     IGNORE_NONGROUP   = 4,
 225     IGNORE_BELOW      = 5,
 226     /*IGNORE_NONFOCUS   = 1 << 5,*/
 227     IGNORE_DOCK       = 6,
 228     IGNORE_END        = 7
 229 };
 230
 231 static gboolean place_nooverlap(ObClient *c, gint *x, gint *y)
 232 {
 233     Rect **areas;
 234     gint ignore;
 235     gboolean ret;
 236     gint maxsize;
 237     GSList *spaces = NULL, *sit, *maxit;
 238     guint i;
 239
 240     areas = pick_head(c);
 241     ret = FALSE;
 242     maxsize = 0;
 243     maxit = NULL;
 244
 245     /* try ignoring different things to find empty space */
 246     for (ignore = 0; ignore < IGNORE_END && !ret; ignore++) {
 247         /* try all monitors in order of preference, but only the first one
 248            if config_place_monitor is MOUSE or ACTIVE */
 249         for (i = 0; (i < (config_place_monitor != OB_PLACE_MONITOR_ANY ?
 250                           1 : screen_num_monitors) && !ret); ++i)
 251         {
 252             GList *it;
 253
 254             /* add the whole monitor */
 255             spaces = area_add(spaces, areas[i]);
 256
 257             /* go thru all the windows */
 258             for (it = client_list; it; it = g_list_next(it)) {
 259                 ObClient *test = it->data;
 260
 261                 /* should we ignore this client? */
 262                 if (screen_showing_desktop) continue;
 263                 if (c == test) continue;
 264                 if (test->iconic) continue;
 265                 if (c->desktop != DESKTOP_ALL) {
 266                     if (test->desktop != c->desktop &&
 267                         test->desktop != DESKTOP_ALL) continue;
 268                 } else {
 269                     if (test->desktop != screen_desktop &&
 270                         test->desktop != DESKTOP_ALL) continue;
 271                 }
 272                 if (test->type == OB_CLIENT_TYPE_SPLASH ||
 273                     test->type == OB_CLIENT_TYPE_DESKTOP) continue;
 274
 275
 276                 if ((ignore >= IGNORE_FULLSCREEN) &&
 277                     test->fullscreen) continue;
 278                 if ((ignore >= IGNORE_MAXIMIZED) &&
 279                     test->max_horz && test->max_vert) continue;
 280                 if ((ignore >= IGNORE_MENUTOOL) &&
 281                     (test->type == OB_CLIENT_TYPE_MENU ||
 282                      test->type == OB_CLIENT_TYPE_TOOLBAR) &&
 283                     client_has_parent(c)) continue;
 284                 /*
 285                 if ((ignore >= IGNORE_SHADED) &&
 286                     test->shaded) continue;
 287                 */
 288                 if ((ignore >= IGNORE_NONGROUP) &&
 289                     client_has_group_siblings(c) &&
 290                     test->group != c->group) continue;
 291                 if ((ignore >= IGNORE_BELOW) &&
 292                     test->layer < c->layer) continue;
 293                 /*
 294                 if ((ignore >= IGNORE_NONFOCUS) &&
 295                     focus_client != test) continue;
 296                 */
 297                 /* don't ignore this window, so remove it from the available
 298                    area */
 299                 spaces = area_remove(spaces, &test->frame->area);
 300             }
 301
 302             if (ignore < IGNORE_DOCK) {
 303                 Rect a;
 304                 dock_get_area(&a);
 305                 spaces = area_remove(spaces, &a);
 306             }
 307
 308             for (sit = spaces; sit; sit = g_slist_next(sit)) {
 309                 Rect *r = sit->data;
 310
 311                 if (r->width >= c->frame->area.width &&
 312                     r->height >= c->frame->area.height &&
 313                     r->width * r->height > maxsize)
 314                 {
 315                     maxsize = r->width * r->height;
 316                     maxit = sit;
 317                 }
 318             }
 319
 320             if (maxit) {
 321                 Rect *r = maxit->data;
 322
 323                 /* center it in the area */
 324                 *x = r->x;
 325                 *y = r->y;
 326                 if (config_place_center) {
 327                     *x += (r->width - c->frame->area.width) / 2;
 328                     *y += (r->height - c->frame->area.height) / 2;
 329                 }
 330                 ret = TRUE;
 331             }
 332
 333             while (spaces) {
 334                 g_slice_free(Rect, spaces->data);
 335                 spaces = g_slist_delete_link(spaces, spaces);
 336             }
 337         }
 338     }
 339
 340     for (i = 0; i < screen_num_monitors; ++i)
 341         g_slice_free(Rect, areas[i]);
 342     g_free(areas);
 343     return ret;
 344 }
 345
 346 static gboolean place_under_mouse(ObClient *client, gint *x, gint *y)
 347 {
 348     gint l, r, t, b;
 349     gint px, py;
 350     Rect *area;
 351
 352     if (!screen_pointer_pos(&px, &py))
 353         return FALSE;
 354     area = pick_pointer_head(client);
 355
 356     l = area->x;
 357     t = area->y;
 358     r = area->x + area->width - client->frame->area.width;
 359     b = area->y + area->height - client->frame->area.height;
 360
 361     *x = px - client->area.width / 2 - client->frame->size.left;
 362     *x = MIN(MAX(*x, l), r);
 363     *y = py - client->area.height / 2 - client->frame->size.top;
 364     *y = MIN(MAX(*y, t), b);
 365
 366     g_slice_free(Rect, area);
 367
 368     return TRUE;
 369 }
 370
 371 static gboolean place_per_app_setting(ObClient *client, gint *x, gint *y,
 372                                       ObAppSettings *settings)
 373 {
 374     Rect *screen = NULL;
 375
 376     if (!settings || (settings && !settings->pos_given))
 377         return FALSE;
 378
 379     /* Find which head the pointer is on */
 380     if (settings->monitor == 0)
 381         /* this can return NULL */
 382         screen = pick_pointer_head(client);
 383     else if (settings->monitor > 0 &&
 384              (guint)settings->monitor <= screen_num_monitors)
 385         screen = screen_area(client->desktop, (guint)settings->monitor - 1,
 386                              NULL);
 387
 388     /* if we have't found a screen yet.. */
 389     if (!screen) {
 390         Rect **areas;
 391         guint i;
 392
 393         areas = pick_head(client);
 394         screen = areas[0];
 395
 396         /* don't free the first one, it's being set as "screen" */
 397         for (i = 1; i < screen_num_monitors; ++i)
 398             g_slice_free(Rect, areas[i]);
 399         g_free(areas);
 400     }
 401
 402     if (settings->position.x.center)
 403         *x = screen->x + screen->width / 2 - client->area.width / 2;
 404     else if (settings->position.x.opposite)
 405         *x = screen->x + screen->width - client->frame->area.width -
 406             settings->position.x.pos;
 407     else
 408         *x = screen->x + settings->position.x.pos;
 409
 410     if (settings->position.y.center)
 411         *y = screen->y + screen->height / 2 - client->area.height / 2;
 412     else if (settings->position.y.opposite)
 413         *y = screen->y + screen->height - client->frame->area.height -
 414             settings->position.y.pos;
 415     else
 416         *y = screen->y + settings->position.y.pos;
 417
 418     g_slice_free(Rect, screen);
 419     return TRUE;
 420 }
 421
 422 static gboolean place_transient_splash(ObClient *client, gint *x, gint *y)
 423 {
 424     if (client->type == OB_CLIENT_TYPE_DIALOG) {
 425         GSList *it;
 426         gboolean first = TRUE;
 427         gint l, r, t, b;
 428         for (it = client->parents; it; it = g_slist_next(it)) {
 429             ObClient *m = it->data;
 430             if (!m->iconic) {
 431                 if (first) {
 432                     l = RECT_LEFT(m->frame->area);
 433                     t = RECT_TOP(m->frame->area);
 434                     r = RECT_RIGHT(m->frame->area);
 435                     b = RECT_BOTTOM(m->frame->area);
 436                     first = FALSE;
 437                 } else {
 438                     l = MIN(l, RECT_LEFT(m->frame->area));
 439                     t = MIN(t, RECT_TOP(m->frame->area));
 440                     r = MAX(r, RECT_RIGHT(m->frame->area));
 441                     b = MAX(b, RECT_BOTTOM(m->frame->area));
 442                 }
 443             }
 444             if (!first) {
 445                 *x = ((r + 1 - l) - client->frame->area.width) / 2 + l;
 446                 *y = ((b + 1 - t) - client->frame->area.height) / 2 + t;
 447                 return TRUE;
 448             }
 449         }
 450     }
 451
 452     if (client->type == OB_CLIENT_TYPE_DIALOG ||
 453         client->type == OB_CLIENT_TYPE_SPLASH)
 454     {
 455         Rect **areas;
 456         guint i;
 457
 458         areas = pick_head(client);
 459
 460         *x = (areas[0]->width - client->frame->area.width) / 2 + areas[0]->x;
 461         *y = (areas[0]->height - client->frame->area.height) / 2 + areas[0]->y;
 462
 463         for (i = 0; i < screen_num_monitors; ++i)
 464             g_slice_free(Rect, areas[i]);
 465         g_free(areas);
 466         return TRUE;
 467     }
 468
 469     return FALSE;
 470 }
 471
 472 /*! Return TRUE if openbox chose the position for the window, and FALSE if
 473   the application chose it */
 474 gboolean place_client(ObClient *client, gint *x, gint *y,
 475                       ObAppSettings *settings)
 476 {
 477     gboolean ret;
 478
 479     /* per-app settings override program specified position
 480      * but not user specified, unless pos_force is enabled */
 481     if (((client->positioned & USPosition) &&
 482          !(settings && settings->pos_given && settings->pos_force)) ||
 483         ((client->positioned & PPosition) &&
 484          !(settings && settings->pos_given)))
 485         return FALSE;
 486
 487     /* try a number of methods */
 488     ret = place_per_app_setting(client, x, y, settings) ||
 489         place_transient_splash(client, x, y) ||
 490         (config_place_policy == OB_PLACE_POLICY_MOUSE &&
 491          place_under_mouse(client, x, y)) ||
 492         place_nooverlap(client, x, y) ||
 493         place_random(client, x, y);
 494     g_assert(ret);
 495
 496     /* get where the client should be */
 497     frame_frame_gravity(client->frame, x, y);
 498     return TRUE;
 499 }