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

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