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         Rect *monitor = screen_physical_area_monitor(i);
 111         gboolean contain = RECT_CONTAINS(*monitor, px, py);
 112         g_free(monitor);
 113         if (contain) {
 114             add_choice(choice, i);
 115             ob_debug("placement adding choice %d for mouse pointer", i);
 116             break;
 117         }
 118     }
 119
 120     /* add any leftover choices */
 121     for (i = 0; i < screen_num_monitors; ++i)
 122         add_choice(choice, i);
 123
 124     for (i = 0; i < screen_num_monitors; ++i)
 125         area[i] = screen_area(c->desktop, choice[i], NULL);
 126
 127     g_free(choice);
 128
 129     return area;
 130 }
 131
 132 static gboolean place_random(ObClient *client, gint *x, gint *y)
 133 {
 134     gint l, r, t, b;
 135     Rect **areas;
 136     guint i;
 137
 138     areas = pick_head(client);
 139     i = (config_place_monitor != OB_PLACE_MONITOR_ANY) ?
 140         0 : g_random_int_range(0, screen_num_monitors);
 141
 142     l = areas[i]->x;
 143     t = areas[i]->y;
 144     r = areas[i]->x + areas[i]->width - client->frame->area.width;
 145     b = areas[i]->y + areas[i]->height - client->frame->area.height;
 146
 147     if (r > l) *x = g_random_int_range(l, r + 1);
 148     else       *x = areas[i]->x;
 149     if (b > t) *y = g_random_int_range(t, b + 1);
 150     else       *y = areas[i]->y;
 151
 152     for (i = 0; i < screen_num_monitors; ++i)
 153         g_free(areas[i]);
 154     g_free(areas);
 155
 156     return TRUE;
 157 }
 158
 159 static GSList* area_add(GSList *list, Rect *a)
 160 {
 161     Rect *r = g_new(Rect, 1);
 162     *r = *a;
 163     return g_slist_prepend(list, r);
 164 }
 165
 166 static GSList* area_remove(GSList *list, Rect *a)
 167 {
 168     GSList *sit;
 169     GSList *result = NULL;
 170
 171     for (sit = list; sit; sit = g_slist_next(sit)) {
 172         Rect *r = sit->data;
 173
 174         if (!RECT_INTERSECTS_RECT(*r, *a)) {
 175             result = g_slist_prepend(result, r);
 176             /* dont free r, it's moved to the result list */
 177         } else {
 178             Rect isect, extra;
 179
 180             /* Use an intersection of a and r to determine the space
 181                around r that we can use.
 182
 183                NOTE: the spaces calculated can overlap.
 184             */
 185
 186             RECT_SET_INTERSECTION(isect, *r, *a);
 187
 188             if (RECT_LEFT(isect) > RECT_LEFT(*r)) {
 189                 RECT_SET(extra, r->x, r->y,
 190                          RECT_LEFT(isect) - r->x, r->height);
 191                 result = area_add(result, &extra);
 192             }
 193
 194             if (RECT_TOP(isect) > RECT_TOP(*r)) {
 195                 RECT_SET(extra, r->x, r->y,
 196                          r->width, RECT_TOP(isect) - r->y + 1);
 197                 result = area_add(result, &extra);
 198             }
 199
 200             if (RECT_RIGHT(isect) < RECT_RIGHT(*r)) {
 201                 RECT_SET(extra, RECT_RIGHT(isect) + 1, r->y,
 202                          RECT_RIGHT(*r) - RECT_RIGHT(isect), r->height);
 203                 result = area_add(result, &extra);
 204             }
 205
 206             if (RECT_BOTTOM(isect) < RECT_BOTTOM(*r)) {
 207                 RECT_SET(extra, r->x, RECT_BOTTOM(isect) + 1,
 208                          r->width, RECT_BOTTOM(*r) - RECT_BOTTOM(isect));
 209                 result = area_add(result, &extra);
 210             }
 211
 212             /* 'r' is not being added to the result list, so free it */
 213             g_free(r);
 214         }
 215     }
 216     g_slist_free(list);
 217     return result;
 218 }
 219
 220 enum {
 221     IGNORE_FULLSCREEN = 1,
 222     IGNORE_MAXIMIZED  = 2,
 223     IGNORE_MENUTOOL   = 3,
 224     /*IGNORE_SHADED     = 3,*/
 225     IGNORE_NONGROUP   = 4,
 226     IGNORE_BELOW      = 5,
 227     /*IGNORE_NONFOCUS   = 1 << 5,*/
 228     IGNORE_DOCK       = 6,
 229     IGNORE_END        = 7
 230 };
 231
 232 static gboolean place_nooverlap(ObClient *c, gint *x, gint *y)
 233 {
 234     Rect **areas;
 235     gint ignore;
 236     gboolean ret;
 237     gint maxsize;
 238     GSList *spaces = NULL, *sit, *maxit;
 239     guint i;
 240
 241     areas = pick_head(c);
 242     ret = FALSE;
 243     maxsize = 0;
 244     maxit = NULL;
 245
 246     /* try ignoring different things to find empty space */
 247     for (ignore = 0; ignore < IGNORE_END && !ret; ignore++) {
 248         /* try all monitors in order of preference, but only the first one
 249            if config_place_monitor is MOUSE or ACTIVE */
 250         for (i = 0; (i < (config_place_monitor != OB_PLACE_MONITOR_ANY ?
 251                           1 : screen_num_monitors) && !ret); ++i)
 252         {
 253             GList *it;
 254
 255             /* add the whole monitor */
 256             spaces = area_add(spaces, areas[i]);
 257
 258             /* go thru all the windows */
 259             for (it = client_list; it; it = g_list_next(it)) {
 260                 ObClient *test = it->data;
 261
 262                 /* should we ignore this client? */
 263                 if (screen_showing_desktop) continue;
 264                 if (c == test) continue;
 265                 if (test->iconic) continue;
 266                 if (c->desktop != DESKTOP_ALL) {
 267                     if (test->desktop != c->desktop &&
 268                         test->desktop != DESKTOP_ALL) continue;
 269                 } else {
 270                     if (test->desktop != screen_desktop &&
 271                         test->desktop != DESKTOP_ALL) continue;
 272                 }
 273                 if (test->type == OB_CLIENT_TYPE_SPLASH ||
 274                     test->type == OB_CLIENT_TYPE_DESKTOP) continue;
 275
 276
 277                 if ((ignore >= IGNORE_FULLSCREEN) &&
 278                     test->fullscreen) continue;
 279                 if ((ignore >= IGNORE_MAXIMIZED) &&
 280                     test->max_horz && test->max_vert) continue;
 281                 if ((ignore >= IGNORE_MENUTOOL) &&
 282                     (test->type == OB_CLIENT_TYPE_MENU ||
 283                      test->type == OB_CLIENT_TYPE_TOOLBAR) &&
 284                     client_has_parent(c)) continue;
 285                 /*
 286                 if ((ignore >= IGNORE_SHADED) &&
 287                     test->shaded) continue;
 288                 */
 289                 if ((ignore >= IGNORE_NONGROUP) &&
 290                     client_has_group_siblings(c) &&
 291                     test->group != c->group) continue;
 292                 if ((ignore >= IGNORE_BELOW) &&
 293                     test->layer < c->layer) continue;
 294                 /*
 295                 if ((ignore >= IGNORE_NONFOCUS) &&
 296                     focus_client != test) continue;
 297                 */
 298                 /* don't ignore this window, so remove it from the available
 299                    area */
 300                 spaces = area_remove(spaces, &test->frame->area);
 301             }
 302
 303             if (ignore < IGNORE_DOCK) {
 304                 Rect a;
 305                 dock_get_area(&a);
 306                 spaces = area_remove(spaces, &a);
 307             }
 308
 309             for (sit = spaces; sit; sit = g_slist_next(sit)) {
 310                 Rect *r = sit->data;
 311
 312                 if (r->width >= c->frame->area.width &&
 313                     r->height >= c->frame->area.height &&
 314                     r->width * r->height > maxsize)
 315                 {
 316                     maxsize = r->width * r->height;
 317                     maxit = sit;
 318                 }
 319             }
 320
 321             if (maxit) {
 322                 Rect *r = maxit->data;
 323
 324                 /* center it in the area */
 325                 *x = r->x;
 326                 *y = r->y;
 327                 if (config_place_center) {
 328                     *x += (r->width - c->frame->area.width) / 2;
 329                     *y += (r->height - c->frame->area.height) / 2;
 330                 }
 331                 ret = TRUE;
 332             }
 333
 334             while (spaces) {
 335                 g_free(spaces->data);
 336                 spaces = g_slist_delete_link(spaces, spaces);
 337             }
 338         }
 339     }
 340
 341     for (i = 0; i < screen_num_monitors; ++i)
 342         g_free(areas[i]);
 343     g_free(areas);
 344     return ret;
 345 }
 346
 347 static gboolean place_under_mouse(ObClient *client, gint *x, gint *y)
 348 {
 349     gint l, r, t, b;
 350     gint px, py;
 351     Rect *area;
 352
 353     if (!screen_pointer_pos(&px, &py))
 354         return FALSE;
 355     area = pick_pointer_head(client);
 356
 357     l = area->x;
 358     t = area->y;
 359     r = area->x + area->width - client->frame->area.width;
 360     b = area->y + area->height - client->frame->area.height;
 361
 362     *x = px - client->area.width / 2 - client->frame->size.left;
 363     *x = MIN(MAX(*x, l), r);
 364     *y = py - client->area.height / 2 - client->frame->size.top;
 365     *y = MIN(MAX(*y, t), b);
 366
 367     return TRUE;
 368 }
 369
 370 static gboolean place_per_app_setting(ObClient *client, gint *x, gint *y,
 371                                       ObAppSettings *settings)
 372 {
 373     Rect *screen = NULL;
 374
 375     if (!settings || (settings && !settings->pos_given))
 376         return FALSE;
 377
 378     /* Find which head the pointer is on */
 379     if (settings->monitor == 0)
 380         /* this can return NULL */
 381         screen = pick_pointer_head(client);
 382     else if (settings->monitor > 0 &&
 383              (guint)settings->monitor <= screen_num_monitors)
 384         screen = screen_area(client->desktop, (guint)settings->monitor - 1,
 385                              NULL);
 386
 387     /* if we have't found a screen yet.. */
 388     if (!screen) {
 389         Rect **areas;
 390         guint i;
 391
 392         areas = pick_head(client);
 393         screen = areas[0];
 394
 395         /* don't free the first one, it's being set as "screen" */
 396         for (i = 1; i < screen_num_monitors; ++i)
 397             g_free(areas[i]);
 398         g_free(areas);
 399     }
 400
 401     if (settings->position.x.center)
 402         *x = screen->x + screen->width / 2 - client->area.width / 2;
 403     else if (settings->position.x.opposite)
 404         *x = screen->x + screen->width - client->frame->area.width -
 405             settings->position.x.pos;
 406     else
 407         *x = screen->x + settings->position.x.pos;
 408
 409     if (settings->position.y.center)
 410         *y = screen->y + screen->height / 2 - client->area.height / 2;
 411     else if (settings->position.y.opposite)
 412         *y = screen->y + screen->height - client->frame->area.height -
 413             settings->position.y.pos;
 414     else
 415         *y = screen->y + settings->position.y.pos;
 416
 417     g_free(screen);
 418     return TRUE;
 419 }
 420
 421 static gboolean place_transient_splash(ObClient *client, gint *x, gint *y)
 422 {
 423     if (client->type == OB_CLIENT_TYPE_DIALOG) {
 424         GSList *it;
 425         gboolean first = TRUE;
 426         gint l, r, t, b;
 427         for (it = client->parents; it; it = g_slist_next(it)) {
 428             ObClient *m = it->data;
 429             if (!m->iconic) {
 430                 if (first) {
 431                     l = RECT_LEFT(m->frame->area);
 432                     t = RECT_TOP(m->frame->area);
 433                     r = RECT_RIGHT(m->frame->area);
 434                     b = RECT_BOTTOM(m->frame->area);
 435                     first = FALSE;
 436                 } else {
 437                     l = MIN(l, RECT_LEFT(m->frame->area));
 438                     t = MIN(t, RECT_TOP(m->frame->area));
 439                     r = MAX(r, RECT_RIGHT(m->frame->area));
 440                     b = MAX(b, RECT_BOTTOM(m->frame->area));
 441                 }
 442             }
 443             if (!first) {
 444                 *x = ((r + 1 - l) - client->frame->area.width) / 2 + l;
 445                 *y = ((b + 1 - t) - client->frame->area.height) / 2 + t;
 446                 return TRUE;
 447             }
 448         }
 449     }
 450
 451     if (client->type == OB_CLIENT_TYPE_DIALOG ||
 452         client->type == OB_CLIENT_TYPE_SPLASH)
 453     {
 454         Rect **areas;
 455         guint i;
 456
 457         areas = pick_head(client);
 458
 459         *x = (areas[0]->width - client->frame->area.width) / 2 + areas[0]->x;
 460         *y = (areas[0]->height - client->frame->area.height) / 2 + areas[0]->y;
 461
 462         for (i = 0; i < screen_num_monitors; ++i)
 463             g_free(areas[i]);
 464         g_free(areas);
 465         return TRUE;
 466     }
 467
 468     return FALSE;
 469 }
 470
 471 /* Return TRUE if we want client.c to enforce on-screen-keeping */
 472 gboolean place_client(ObClient *client, gint *x, gint *y,
 473                       ObAppSettings *settings)
 474 {
 475     gboolean ret;
 476     gboolean userplaced = FALSE;
 477
 478     /* per-app settings override program specified position
 479      * but not user specified, unless pos_force is enabled */
 480     if (((client->positioned & USPosition) &&
 481          !(settings && settings->pos_given && settings->pos_force)) ||
 482         ((client->positioned & PPosition) &&
 483          !(settings && settings->pos_given)))
 484         return FALSE;
 485
 486     /* try a number of methods */
 487     ret = place_transient_splash(client, x, y) ||
 488         (userplaced = place_per_app_setting(client, x, y, settings)) ||
 489         (config_place_policy == OB_PLACE_POLICY_MOUSE &&
 490          place_under_mouse(client, x, y)) ||
 491         place_nooverlap(client, x, y) ||
 492         place_random(client, x, y);
 493     g_assert(ret);
 494
 495     /* get where the client should be */
 496     frame_frame_gravity(client->frame, x, y);
 497     return !userplaced;
 498 }