- /* vertical snapping */
- switch (corn) {
- case OB_CORNER_TOPLEFT:
- case OB_CORNER_TOPRIGHT:
- dlt = t;
- drb = b + *h - c->frame->area.height;
- if (b <= ab && drb > ab && drb <= ab + config_resist_edge)
- *h = ab - t + 1;
- break;
- case OB_CORNER_BOTTOMLEFT:
- case OB_CORNER_BOTTOMRIGHT:
- dlt = t - *h + c->frame->area.height;
- drb = b;
- if (t >= at && dlt < at && dlt >= at - config_resist_edge)
- *h = b - at + 1;
- break;
+ /* get the screen boundaries */
+ al = RECT_LEFT(*area);
+ at = RECT_TOP(*area);
+ ar = RECT_RIGHT(*area);
+ ab = RECT_BOTTOM(*area);
+ pl = RECT_LEFT(*parea);
+ pt = RECT_TOP(*parea);
+ pr = RECT_RIGHT(*parea);
+ pb = RECT_BOTTOM(*parea);
+
+ if (config_resist_edge) {
+ /* horizontal snapping */
+ switch (corn) {
+ case OB_CORNER_TOPLEFT:
+ case OB_CORNER_BOTTOMLEFT:
+ dlt = l;
+ drb = r + *w - c->frame->area.width;
+ if (r <= ar && drb > ar && drb <= ar + config_resist_edge)
+ *w = ar - l + 1;
+ else if (r <= pr && drb > pr && drb <= pr + config_resist_edge)
+ *w = pr - l + 1;
+ break;
+ case OB_CORNER_TOPRIGHT:
+ case OB_CORNER_BOTTOMRIGHT:
+ dlt = l - *w + c->frame->area.width;
+ drb = r;
+ if (l >= al && dlt < al && dlt >= al - config_resist_edge)
+ *w = r - al + 1;
+ else if (l >= pl && dlt < pl && dlt >= pl - config_resist_edge)
+ *w = r - pl + 1;
+ break;
+ }
+
+ /* vertical snapping */
+ switch (corn) {
+ case OB_CORNER_TOPLEFT:
+ case OB_CORNER_TOPRIGHT:
+ dlt = t;
+ drb = b + *h - c->frame->area.height;
+ if (b <= ab && drb > ab && drb <= ab + config_resist_edge)
+ *h = ab - t + 1;
+ else if (b <= pb && drb > pb && drb <= pb + config_resist_edge)
+ *h = pb - t + 1;
+ break;
+ case OB_CORNER_BOTTOMLEFT:
+ case OB_CORNER_BOTTOMRIGHT:
+ dlt = t - *h + c->frame->area.height;
+ drb = b;
+ if (t >= at && dlt < at && dlt >= at - config_resist_edge)
+ *h = b - at + 1;
+ else if (t >= pt && dlt < pt && dlt >= pt - config_resist_edge)
+ *h = b - pt + 1;
+ break;
+ }