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

   1 #include "dispatch.h"
   2 #include "client.h"
   3 #include "frame.h"
   4 #include "stacking.h"
   5 #include "screen.h"
   6 #include "config.h"
   7 #include "parser/parse.h"
   8
   9 #include <glib.h>
  10
  11 void resist_move(ObClient *c, gint *x, gint *y)
  12 {
  13     GList *it;
  14     Rect *area;
  15     guint i;
  16     gint l, t, r, b; /* requested edges */
  17     gint al, at, ar, ab; /* screen area edges */
  18     gint cl, ct, cr, cb; /* current edges */
  19     gint w, h; /* current size */
  20     ObClient *snapx = NULL, *snapy = NULL;
  21
  22     w = c->frame->area.width;
  23     h = c->frame->area.height;
  24
  25     l = *x;
  26     t = *y;
  27     r = l + w - 1;
  28     b = t + h - 1;
  29
  30     cl = c->frame->area.x;
  31     ct = c->frame->area.y;
  32     cr = cl + c->frame->area.width - 1;
  33     cb = ct + c->frame->area.height - 1;
  34
  35     /* snap to other clients */
  36     if (config_resist_win)
  37         for (it = stacking_list; it != NULL; it = it->next) {
  38             ObClient *target;
  39             int tl, tt, tr, tb; /* 1 past the target's edges on each side */
  40
  41             if (!WINDOW_IS_CLIENT(it->data))
  42                 continue;
  43             target = it->data;
  44             /* don't snap to self or non-visibles */
  45             if (!target->frame->visible || target == c) continue;
  46
  47             tl = target->frame->area.x - 1;
  48             tt = target->frame->area.y - 1;
  49             tr = tl + target->frame->area.width + 1;
  50             tb = tt + target->frame->area.height + 1;
  51
  52             /* snapx and snapy ensure that the window snaps to the top-most
  53                window edge available, without going all the way from
  54                bottom-to-top in the stacking list
  55             */
  56             if (snapx == NULL) {
  57                 if (ct < tb && cb > tt) {
  58                     if (cl >= tr && l < tr && l >= tr - config_resist_win)
  59                         *x = tr, snapx = target;
  60                     else if (cr <= tl && r > tl &&
  61                              r <= tl + config_resist_win)
  62                         *x = tl - w + 1, snapx = target;
  63                     if (snapx != NULL) {
  64                         /* try to corner snap to the window */
  65                         if (ct > tt && t <= tt &&
  66                             t > tt - config_resist_win)
  67                             *y = tt + 1, snapy = target;
  68                         else if (cb < tb && b >= tb &&
  69                                  b < tb + config_resist_win)
  70                             *y = tb - h, snapy = target;
  71                     }
  72                 }
  73             }
  74             if (snapy == NULL) {
  75                 if (cl < tr && cr > tl) {
  76                     if (ct >= tb && t < tb && t >= tb - config_resist_win)
  77                         *y = tb, snapy = target;
  78                     else if (cb <= tt && b > tt &&
  79                              b <= tt + config_resist_win)
  80                         *y = tt - h + 1, snapy = target;
  81                     if (snapy != NULL) {
  82                         /* try to corner snap to the window */
  83                         if (cl > tl && l <= tl &&
  84                             l > tl - config_resist_win)
  85                             *x = tl + 1, snapx = target;
  86                         else if (cr < tr && r >= tr &&
  87                                  r < tr + config_resist_win)
  88                             *x = tr - w, snapx = target;
  89                     }
  90                 }
  91             }
  92
  93             if (snapx && snapy) break;
  94         }
  95
  96     /* get the screen boundaries */
  97     if (config_resist_edge) {
  98         for (i = 0; i < screen_num_monitors; ++i) {
  99             area = screen_area_monitor(c->desktop, i);
 100
 101             if (!RECT_INTERSECTS_RECT(*area, c->frame->area))
 102                 continue;
 103
 104             al = area->x;
 105             at = area->y;
 106             ar = al + area->width - 1;
 107             ab = at + area->height - 1;
 108
 109             /* snap to screen edges */
 110             if (cl >= al && l < al && l >= al - config_resist_edge)
 111                 *x = al;
 112             else if (cr <= ar && r > ar && r <= ar + config_resist_edge)
 113                 *x = ar - w + 1;
 114             if (ct >= at && t < at && t >= at - config_resist_edge)
 115                 *y = at;
 116             else if (cb <= ab && b > ab && b < ab + config_resist_edge)
 117                 *y = ab - h + 1;
 118         }
 119     }
 120 }
 121
 122 void resist_size(ObClient *c, gint *w, gint *h, ObCorner corn)
 123 {
 124     GList *it;
 125     ObClient *target; /* target */
 126     gint l, t, r, b; /* my left, top, right and bottom sides */
 127     gint dlt, drb; /* my destination left/top and right/bottom sides */
 128     gint tl, tt, tr, tb; /* target's left, top, right and bottom bottom sides*/
 129     Rect *area;
 130     gint al, at, ar, ab; /* screen boundaries */
 131     ObClient *snapx = NULL, *snapy = NULL;
 132
 133     /* don't snap windows with size increments */
 134     if (c->size_inc.width > 1 || c->size_inc.height > 1)
 135         return;
 136
 137     l = c->frame->area.x;
 138     r = l + c->frame->area.width - 1;
 139     t = c->frame->area.y;
 140     b = t + c->frame->area.height - 1;
 141
 142     /* get the screen boundaries */
 143     area = screen_area(c->desktop);
 144     al = area->x;
 145     at = area->y;
 146     ar = al + area->width - 1;
 147     ab = at + area->height - 1;
 148
 149     /* snap to other windows */
 150     if (config_resist_win) {
 151         for (it = stacking_list; it != NULL; it = it->next) {
 152             if (!WINDOW_IS_CLIENT(it->data))
 153                 continue;
 154             target = it->data;
 155
 156             /* don't snap to invisibles or ourself */
 157             if (!target->frame->visible || target == c) continue;
 158
 159             tl = target->frame->area.x;
 160             tr = target->frame->area.x + target->frame->area.width - 1;
 161             tt = target->frame->area.y;
 162             tb = target->frame->area.y + target->frame->area.height - 1;
 163
 164             if (snapx == NULL) {
 165                 /* horizontal snapping */
 166                 if (t < tb && b > tt) {
 167                     switch (corn) {
 168                     case OB_CORNER_TOPLEFT:
 169                     case OB_CORNER_BOTTOMLEFT:
 170                         dlt = l;
 171                         drb = r + *w - c->frame->area.width;
 172                         if (r < tl && drb >= tl &&
 173                             drb < tl + config_resist_win)
 174                             *w = tl - l, snapx = target;
 175                         break;
 176                     case OB_CORNER_TOPRIGHT:
 177                     case OB_CORNER_BOTTOMRIGHT:
 178                         dlt = l - *w + c->frame->area.width;
 179                         drb = r;
 180                         if (l > tr && dlt <= tr &&
 181                             dlt > tr - config_resist_win)
 182                             *w = r - tr, snapx = target;
 183                         break;
 184                     }
 185                 }
 186             }
 187
 188             if (snapy == NULL) {
 189                 /* vertical snapping */
 190                 if (l < tr && r > tl) {
 191                     switch (corn) {
 192                     case OB_CORNER_TOPLEFT:
 193                     case OB_CORNER_TOPRIGHT:
 194                         dlt = t;
 195                         drb = b + *h - c->frame->area.height;
 196                         if (b < tt && drb >= tt &&
 197                             drb < tt + config_resist_win)
 198                             *h = tt - t, snapy = target;
 199                         break;
 200                     case OB_CORNER_BOTTOMLEFT:
 201                     case OB_CORNER_BOTTOMRIGHT:
 202                         dlt = t - *h + c->frame->area.height;
 203                         drb = b;
 204                         if (t > tb && dlt <= tb &&
 205                             dlt > tb - config_resist_win)
 206                             *h = b - tb, snapy = target;
 207                         break;
 208                     }
 209                 }
 210             }
 211
 212             /* snapped both ways */
 213             if (snapx && snapy) break;
 214         }
 215     }
 216
 217     /* snap to screen edges */
 218
 219     if (config_resist_edge) {
 220         /* horizontal snapping */
 221         switch (corn) {
 222         case OB_CORNER_TOPLEFT:
 223         case OB_CORNER_BOTTOMLEFT:
 224             dlt = l;
 225             drb = r + *w - c->frame->area.width;
 226             if (r <= ar && drb > ar && drb <= ar + config_resist_edge)
 227                 *w = ar - l + 1;
 228             break;
 229         case OB_CORNER_TOPRIGHT:
 230         case OB_CORNER_BOTTOMRIGHT:
 231             dlt = l - *w + c->frame->area.width;
 232             drb = r;
 233             if (l >= al && dlt < al && dlt >= al - config_resist_edge)
 234                 *w = r - al + 1;
 235             break;
 236         }
 237
 238         /* vertical snapping */
 239         switch (corn) {
 240         case OB_CORNER_TOPLEFT:
 241         case OB_CORNER_TOPRIGHT:
 242             dlt = t;
 243             drb = b + *h - c->frame->area.height;
 244             if (b <= ab && drb > ab && drb <= ab + config_resist_edge)
 245                 *h = ab - t + 1;
 246             break;
 247         case OB_CORNER_BOTTOMLEFT:
 248         case OB_CORNER_BOTTOMRIGHT:
 249             dlt = t - *h + c->frame->area.height;
 250             drb = b;
 251             if (t >= at && dlt < at && dlt >= at - config_resist_edge)
 252                 *h = b - at + 1;
 253             break;
 254         }
 255     }
 256 }