openbox/place.c

   1 #include "client.h"
   2 #include "group.h"
   3 #include "screen.h"
   4 #include "frame.h"
   5 #include "focus.h"
   6 #include "config.h"
   7
   8 static Rect* pick_head(ObClient *c)
   9 {
  10     /* try direct parent first */
  11     if (c->transient_for && c->transient_for != OB_TRAN_GROUP) {
  12         return screen_area_monitor(c->desktop,
  13                                    client_monitor(c->transient_for));
  14     }
  15
  16     /* more than one guy in his group (more than just him) */
  17     if (c->group && c->group->members->next) {
  18         GSList *it;
  19
  20         /* try on the client's desktop */
  21         for (it = c->group->members; it; it = g_slist_next(it)) {
  22             ObClient *itc = it->data;
  23             if (itc != c &&
  24                 (itc->desktop == c->desktop ||
  25                  itc->desktop == DESKTOP_ALL || c->desktop == DESKTOP_ALL))
  26                 return screen_area_monitor(c->desktop,
  27                                            client_monitor(it->data));
  28         }
  29
  30         /* try on all desktops */
  31         for (it = c->group->members; it; it = g_slist_next(it)) {
  32             ObClient *itc = it->data;
  33             if (itc != c)
  34                 return screen_area_monitor(c->desktop,
  35                                            client_monitor(it->data));
  36         }
  37     }
  38
  39     return NULL;
  40 }
  41
  42 #if 0
  43 static gboolean place_random(ObClient *client, gint *x, gint *y)
  44 {
  45     int l, r, t, b;
  46     Rect *area;
  47
  48     area = pick_head(client);
  49     if (!area)
  50         area = screen_area_monitor(client->desktop,
  51                                    g_random_int_range(0, screen_num_monitors));
  52
  53     l = area->x;
  54     t = area->y;
  55     r = area->x + area->width - client->frame->area.width;
  56     b = area->y + area->height - client->frame->area.height;
  57
  58     if (r > l) *x = g_random_int_range(l, r + 1);
  59     else       *x = 0;
  60     if (b > t) *y = g_random_int_range(t, b + 1);
  61     else       *y = 0;
  62
  63     /* get where the client should be */
  64     frame_frame_gravity(client->frame, x, y);
  65
  66     return TRUE;
  67 }
  68 #endif
  69
  70 static GSList* area_add(GSList *list, Rect *a)
  71 {
  72     Rect *r = g_new(Rect, 1);
  73     *r = *a;
  74     return g_slist_prepend(list, r);
  75 }
  76
  77
  78 static GSList* area_remove(GSList *list, Rect *a)
  79 {
  80     GSList *sit;
  81     GSList *result = NULL;
  82
  83     for (sit = list; sit; sit = g_slist_next(sit)) {
  84         Rect *r = sit->data;
  85
  86         if (!RECT_INTERSECTS_RECT(*r, *a)) {
  87             result = g_slist_prepend(result, r);
  88             r = NULL; /* dont free it */
  89         } else {
  90             Rect isect, extra;
  91
  92             /* Use an intersection of win and curr to determine the space
  93                around curr that we can use.
  94
  95                NOTE: the spaces calculated can overlap.
  96             */
  97
  98             RECT_SET_INTERSECTION(isect, *r, *a);
  99
 100             if (RECT_LEFT(isect) > RECT_LEFT(*r)) {
 101                 RECT_SET(extra, r->x, r->y,
 102                          RECT_LEFT(isect) - r->x, r->height);
 103                 result = area_add(result, &extra);
 104             }
 105
 106             if (RECT_TOP(isect) > RECT_TOP(*r)) {
 107                 RECT_SET(extra, r->x, r->y,
 108                          r->width, RECT_TOP(isect) - r->y + 1);
 109                 result = area_add(result, &extra);
 110             }
 111
 112             if (RECT_RIGHT(isect) < RECT_RIGHT(*r)) {
 113                 RECT_SET(extra, RECT_RIGHT(isect) + 1, r->y,
 114                          RECT_RIGHT(*r) - RECT_RIGHT(isect), r->height);
 115                 result = area_add(result, &extra);
 116             }
 117
 118             if (RECT_BOTTOM(isect) < RECT_BOTTOM(*r)) {
 119                 RECT_SET(extra, r->x, RECT_BOTTOM(isect) + 1,
 120                          r->width, RECT_BOTTOM(*r) - RECT_BOTTOM(isect));
 121                 result = area_add(result, &extra);
 122             }
 123         }
 124
 125         g_free(r);
 126     }
 127     g_slist_free(list);
 128     return result;
 129 }
 130
 131 static gint area_cmp(gconstpointer p1, gconstpointer p2)
 132 {
 133     gint ret;
 134     const Rect *a1 = p1, *a2 = p2;
 135
 136     ret = RECT_BOTTOM(*a1) - RECT_BOTTOM(*a2);
 137     if (!ret)
 138         ret = RECT_LEFT(*a1) - RECT_LEFT(*a2);
 139     return ret;
 140 }
 141
 142 static gboolean place_smart(ObClient *client, gint *x, gint *y)
 143 {
 144     guint i;
 145     gboolean ret = FALSE;
 146     GSList *spaces, *sit;
 147     GList *it, *list;
 148
 149     list = focus_order[client->desktop == DESKTOP_ALL ?
 150                        screen_desktop : client->desktop];
 151
 152     for (i = 0; i < screen_num_monitors; ++i)
 153         spaces = area_add(spaces, screen_area_monitor(client->desktop, i));
 154
 155     for (it = list; it; it = g_list_next(it)) {
 156         ObClient *c = it->data;
 157
 158         if (c == client || c->shaded || !client_normal(c))
 159             continue;
 160         spaces = area_remove(spaces, &c->frame->area);
 161     }
 162
 163     spaces = g_slist_sort(spaces, area_cmp);
 164
 165     for (sit = spaces; sit; sit = g_slist_next(sit)) {
 166         Rect *r = sit->data;
 167
 168         if (!ret) {
 169             if (r->width >= client->frame->area.width &&
 170                 r->height >= client->frame->area.height) {
 171                 ret = TRUE;
 172                 *x = r->x;
 173                 *y = r->y;
 174             }
 175         }
 176
 177         g_free(r);
 178     }
 179     g_slist_free(spaces);
 180
 181     return ret;
 182 }
 183
 184 static gboolean place_under_mouse(ObClient *client, gint *x, gint *y)
 185 {
 186     int px, py;
 187
 188     screen_pointer_pos(&px, &py);
 189
 190     *x = px - client->area.width / 2 - client->frame->size.left;
 191     *y = py - client->area.height / 2 - client->frame->size.top;
 192
 193     return TRUE;
 194 }
 195
 196 static gboolean place_transient(ObClient *client, gint *x, gint *y)
 197 {
 198     if (client->transient_for) {
 199         if (client->transient_for != OB_TRAN_GROUP) {
 200             ObClient *c = client;
 201             ObClient *p = client->transient_for;
 202             *x = (p->frame->area.width - c->frame->area.width) / 2 +
 203                 p->frame->area.x;
 204             *y = (p->frame->area.height - c->frame->area.height) / 2 +
 205                 p->frame->area.y;
 206             return TRUE;
 207         } else {
 208             GSList *it;
 209             gboolean first = TRUE;
 210             int l, r, t, b;
 211             for (it = client->group->members; it; it = it->next) {
 212                 ObClient *m = it->data;
 213                 if (!(m == client || m->transient_for)) {
 214                     if (first) {
 215                         l = RECT_LEFT(m->frame->area);
 216                         t = RECT_TOP(m->frame->area);
 217                         r = RECT_RIGHT(m->frame->area);
 218                         b = RECT_BOTTOM(m->frame->area);
 219                         first = FALSE;
 220                     } else {
 221                         l = MIN(l, RECT_LEFT(m->frame->area));
 222                         t = MIN(t, RECT_TOP(m->frame->area));
 223                         r = MAX(r, RECT_RIGHT(m->frame->area));
 224                         b = MAX(b, RECT_BOTTOM(m->frame->area));
 225                     }
 226                 }
 227             }
 228             if (!first) {
 229                 *x = ((r + 1 - l) - client->frame->area.width) / 2 + l;
 230                 *y = ((b + 1 - t) - client->frame->area.height) / 2 + t;
 231                 return TRUE;
 232             }
 233         }
 234     }
 235     return FALSE;
 236 }
 237
 238 static gboolean place_dialog(ObClient *client, gint *x, gint *y)
 239 {
 240     /* center parentless dialogs on the screen */
 241     if (client->type == OB_CLIENT_TYPE_DIALOG) {
 242         Rect *area;
 243
 244         area = pick_head(client);
 245         if (!area)
 246             area = screen_area_monitor(client->desktop, 0);
 247
 248         *x = (area->width - client->frame->area.width) / 2 + area->x;
 249         *y = (area->height - client->frame->area.height) / 2 + area->y;
 250         return TRUE;
 251     }
 252     return FALSE;
 253 }
 254
 255 void place_client(ObClient *client, gint *x, gint *y)
 256 {
 257     if (client->positioned)
 258         return;
 259     if (place_transient(client, x, y))
 260         return;
 261     if (place_dialog(client, x, y))
 262         return;
 263     if (place_smart(client, x, y))
 264         return;
 265     if (place_under_mouse(client, x, y))
 266         return;
 267     g_assert_not_reached(); /* the last one better succeed */
 268 }