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     return TRUE;
  64 }
  65 #endif
  66
  67 static GSList* area_add(GSList *list, Rect *a)
  68 {
  69     Rect *r = g_new(Rect, 1);
  70     *r = *a;
  71     return g_slist_prepend(list, r);
  72 }
  73
  74 static GSList* area_remove(GSList *list, Rect *a)
  75 {
  76     GSList *sit;
  77     GSList *result = NULL;
  78
  79     for (sit = list; sit; sit = g_slist_next(sit)) {
  80         Rect *r = sit->data;
  81
  82         if (!RECT_INTERSECTS_RECT(*r, *a)) {
  83             result = g_slist_prepend(result, r);
  84             r = NULL; /* dont free it */
  85         } else {
  86             Rect isect, extra;
  87
  88             /* Use an intersection of a and r to determine the space
  89                around r that we can use.
  90
  91                NOTE: the spaces calculated can overlap.
  92             */
  93
  94             RECT_SET_INTERSECTION(isect, *r, *a);
  95
  96             if (RECT_LEFT(isect) > RECT_LEFT(*r)) {
  97                 RECT_SET(extra, r->x, r->y,
  98                          RECT_LEFT(isect) - r->x, r->height);
  99                 result = area_add(result, &extra);
 100             }
 101
 102             if (RECT_TOP(isect) > RECT_TOP(*r)) {
 103                 RECT_SET(extra, r->x, r->y,
 104                          r->width, RECT_TOP(isect) - r->y + 1);
 105                 result = area_add(result, &extra);
 106             }
 107
 108             if (RECT_RIGHT(isect) < RECT_RIGHT(*r)) {
 109                 RECT_SET(extra, RECT_RIGHT(isect) + 1, r->y,
 110                          RECT_RIGHT(*r) - RECT_RIGHT(isect), r->height);
 111                 result = area_add(result, &extra);
 112             }
 113
 114             if (RECT_BOTTOM(isect) < RECT_BOTTOM(*r)) {
 115                 RECT_SET(extra, r->x, RECT_BOTTOM(isect) + 1,
 116                          r->width, RECT_BOTTOM(*r) - RECT_BOTTOM(isect));
 117                 result = area_add(result, &extra);
 118             }
 119         }
 120
 121         g_free(r);
 122     }
 123     g_slist_free(list);
 124     return result;
 125 }
 126
 127 static gint area_cmp(gconstpointer p1, gconstpointer p2)
 128 {
 129     gint ret;
 130     const Rect *a1 = p1, *a2 = p2;
 131
 132     ret = RECT_BOTTOM(*a1) - RECT_BOTTOM(*a2);
 133     if (!ret)
 134         ret = RECT_LEFT(*a1) - RECT_LEFT(*a2);
 135     return ret;
 136 }
 137
 138 static gboolean place_smart(ObClient *client, gint *x, gint *y)
 139 {
 140     guint i;
 141     gboolean ret = FALSE;
 142     GSList *spaces, *sit;
 143     GList *it, *list;
 144
 145     list = focus_order[client->desktop == DESKTOP_ALL ?
 146                        screen_desktop : client->desktop];
 147
 148     for (i = 0; i < screen_num_monitors; ++i)
 149         spaces = area_add(spaces, screen_area_monitor(client->desktop, i));
 150
 151     for (it = list; it; it = g_list_next(it)) {
 152         ObClient *c = it->data;
 153
 154         if (c != client && !c->shaded && client_normal(c))
 155             spaces = area_remove(spaces, &c->frame->area);
 156     }
 157
 158     spaces = g_slist_sort(spaces, area_cmp);
 159
 160     for (sit = spaces; sit; sit = g_slist_next(sit)) {
 161         Rect *r = sit->data;
 162
 163         if (!ret) {
 164             if (r->width >= client->frame->area.width &&
 165                 r->height >= client->frame->area.height) {
 166                 ret = TRUE;
 167                 *x = r->x;
 168                 *y = r->y;
 169             }
 170         }
 171
 172         g_free(r);
 173     }
 174     g_slist_free(spaces);
 175
 176     return ret;
 177 }
 178
 179 static gboolean place_under_mouse(ObClient *client, gint *x, gint *y)
 180 {
 181     guint i;
 182     gint l, r, t, b;
 183     gint px, py;
 184     Rect *area;
 185
 186     screen_pointer_pos(&px, &py);
 187
 188     for (i = 0; i < screen_num_monitors; ++i) {
 189         area = screen_area_monitor(client->desktop, i);
 190         if (RECT_CONTAINS(*area, px, py))
 191             break;
 192     }
 193     if (i == screen_num_monitors)
 194         area = screen_area_monitor(client->desktop, 0);
 195
 196     l = area->x;
 197     t = area->y;
 198     r = area->x + area->width - client->frame->area.width;
 199     b = area->y + area->height - client->frame->area.height;
 200
 201     *x = px - client->area.width / 2 - client->frame->size.left;
 202     *x = MIN(MAX(*x, l), r);
 203     *y = py - client->area.height / 2 - client->frame->size.top;
 204     *y = MIN(MAX(*y, t), b);
 205
 206     return TRUE;
 207 }
 208
 209 static gboolean place_transient(ObClient *client, gint *x, gint *y)
 210 {
 211     if (client->transient_for) {
 212         if (client->transient_for != OB_TRAN_GROUP) {
 213             ObClient *c = client;
 214             ObClient *p = client->transient_for;
 215             *x = (p->frame->area.width - c->frame->area.width) / 2 +
 216                 p->frame->area.x;
 217             *y = (p->frame->area.height - c->frame->area.height) / 2 +
 218                 p->frame->area.y;
 219             return TRUE;
 220         } else {
 221             GSList *it;
 222             gboolean first = TRUE;
 223             int l, r, t, b;
 224             for (it = client->group->members; it; it = it->next) {
 225                 ObClient *m = it->data;
 226                 if (!(m == client || m->transient_for)) {
 227                     if (first) {
 228                         l = RECT_LEFT(m->frame->area);
 229                         t = RECT_TOP(m->frame->area);
 230                         r = RECT_RIGHT(m->frame->area);
 231                         b = RECT_BOTTOM(m->frame->area);
 232                         first = FALSE;
 233                     } else {
 234                         l = MIN(l, RECT_LEFT(m->frame->area));
 235                         t = MIN(t, RECT_TOP(m->frame->area));
 236                         r = MAX(r, RECT_RIGHT(m->frame->area));
 237                         b = MAX(b, RECT_BOTTOM(m->frame->area));
 238                     }
 239                 }
 240             }
 241             if (!first) {
 242                 *x = ((r + 1 - l) - client->frame->area.width) / 2 + l;
 243                 *y = ((b + 1 - t) - client->frame->area.height) / 2 + t;
 244                 return TRUE;
 245             }
 246         }
 247     }
 248     return FALSE;
 249 }
 250
 251 static gboolean place_dialog(ObClient *client, gint *x, gint *y)
 252 {
 253     /* center parentless dialogs on the screen */
 254     if (client->type == OB_CLIENT_TYPE_DIALOG) {
 255         Rect *area;
 256
 257         area = pick_head(client);
 258         if (!area)
 259             area = screen_area_monitor(client->desktop, 0);
 260
 261         *x = (area->width - client->frame->area.width) / 2 + area->x;
 262         *y = (area->height - client->frame->area.height) / 2 + area->y;
 263         return TRUE;
 264     }
 265     return FALSE;
 266 }
 267
 268 void place_client(ObClient *client, gint *x, gint *y)
 269 {
 270     if (client->positioned)
 271         return;
 272     if (place_transient(client, x, y) ||
 273         place_dialog(client, x, y)    ||
 274         place_smart(client, x, y)     ||
 275         place_under_mouse(client, x, y))
 276     {
 277         /* get where the client should be */
 278         frame_frame_gravity(client->frame, x, y);
 279     } else
 280         g_assert_not_reached(); /* the last one better succeed */
 281 }