Merge branch 'StefanSchippers:master' into master

src/callback.c

@@ -1357,7 +1357,7 @@ static int waves_callback(int event, int mx, int my, KeySym key, int button, int
 void draw_crosshair(int what)
 {
   int sdw, sdp;
-  int xhair_size = tclgetintvar("crosshair_size");;
+  int xhair_size = tclgetintvar("crosshair_size");
   dbg(1, "draw_crosshair(): what=%d\n", what);
   sdw = xctx->draw_window;
   sdp = xctx->draw_pixmap;
@@ -2598,7 +2598,7 @@ int rstate; /* (reduced state, without ShiftMask) */
       }
     }
     /* Select by area. Shift pressed */
-    else if((state&Button1Mask) && (state & ShiftMask) &&
+    else if((state&Button1Mask) && (state & ShiftMask) && !(xctx->ui_state & STARTWIRE) &&
              !(xctx->ui_state & (PLACE_SYMBOL | PLACE_TEXT)) && !xctx->shape_point_selected &&
              !xctx->drag_elements && !(xctx->ui_state & STARTPAN) ) {
       if(mx != xctx->mx_save || my != xctx->my_save) {
@@ -2616,7 +2616,19 @@ int rstate; /* (reduced state, without ShiftMask) */
       }
     }
     if(draw_xhair) {
+      if(/* (xctx->ui_state & STARTWIRE) && */ (state & ShiftMask) ) {
+        double x, y, sx, sy;
+        sx = xctx->mousex_snap;
+        sy = xctx->mousey_snap;
+        find_closest_net_or_symbol_pin(xctx->mousex, xctx->mousey, &x, &y);
+        xctx->mousex_snap = x;
+        xctx->mousey_snap = y;
         draw_crosshair(2);
+        xctx->mousex_snap = sx;
+        xctx->mousey_snap = sy;
+      } else {
+        draw_crosshair(2);
+      }
     }
     if(snap_cursor && wire_draw_active) draw_snap_cursor(2);
     break;

src/findnet.c

@@ -182,8 +182,78 @@ static void find_closest_line(double mx,double my)
  }
 }
 
-/* 20171022 snap wire to closest pin or net endpoint */
+
+/* snap wire to closest pin or net endpoint (if it is inside the current screen viewport) */
+/* use spatial hash table iterators to avoid O(N) */
 void find_closest_net_or_symbol_pin(double mx, double my, double *x, double *y)
+{
+  double x1, y1, x2, y2;
+  Iterator_ctx ctx;
+  Instentry *instanceptr;
+  Wireentry *wireptr;
+  double curr_dist = DBL_MAX;
+  double xx, yy, dist, min_dist_x = xctx->mousex_snap, min_dist_y = xctx->mousey_snap;
+
+  x1 = X_TO_XSCHEM(xctx->areax1);
+  y1 = Y_TO_XSCHEM(xctx->areay1);
+  x2 = X_TO_XSCHEM(xctx->areax2); 
+  y2 = Y_TO_XSCHEM(xctx->areay2);
+
+  hash_instances();
+  hash_wires();
+
+  init_inst_iterator(&ctx, x1, y1, x2, y2);
+  while(1) {
+    int i, j, rects;
+    xInstance * const inst = xctx->inst;
+    if( !(instanceptr = inst_iterator_next(&ctx))) break;
+    i = instanceptr->n;
+    if(!((inst[i].ptr+ xctx->sym)->type)) continue;
+    rects = (inst[i].ptr+ xctx->sym)->rects[PINLAYER];
+    for(j = 0; j < rects; j++) {
+      get_inst_pin_coord(i, j,  &xx, &yy);
+      if(!POINTINSIDE(xx, yy, x1, y1, x2, y2)) continue;
+      dist = (mx - xx) * (mx - xx) + (my - yy) * (my - yy);
+      if(dist < curr_dist) {
+        curr_dist = dist;
+        min_dist_x = xx;
+        min_dist_y = yy;
+      }
+    }
+  }
+
+  init_wire_iterator(&ctx, x1, y1, x2, y2);
+  while(1) {
+    int i;
+    xWire * const wire = xctx->wire;
+    if( !(wireptr = wire_iterator_next(&ctx))) break;
+    i = wireptr->n;
+    xx = wire[i].x1;
+    yy = wire[i].y1;
+    if(!POINTINSIDE(xx, yy, x1, y1, x2, y2)) continue;
+    dist = (mx - xx) * (mx - xx) + (my - yy) * (my - yy);
+    if(dist < curr_dist) {
+      curr_dist = dist;
+      min_dist_x = xx;
+      min_dist_y = yy;
+    }
+    xx = wire[i].x2;
+    yy = wire[i].y2;
+    if(!POINTINSIDE(xx, yy, x1, y1, x2, y2)) continue;
+    dist = (mx - xx) * (mx - xx) + (my - yy) * (my - yy);
+    if(dist < curr_dist) {
+      curr_dist = dist;
+      min_dist_x = xx;
+      min_dist_y = yy;
+    }
+  }
+
+  *x = min_dist_x;
+  *y = min_dist_y;
+}
+
+#if 0
+void xfind_closest_net_or_symbol_pin(double mx, double my, double *x, double *y)
 {
   int i, j, no_of_pin_rects;
   double x0, x1, x2, y0, y1, y2, xx, yy, dist, min_dist_x = 0, min_dist_y = 0;
@@ -243,6 +313,7 @@ void find_closest_net_or_symbol_pin(double mx,double my, double *x, double *y)
   *y = min_dist_y;
   my_free(_ALLOC_ID_, &type);
 }
+#endif
 
 static void find_closest_arc(double mx, double my)
 {

src/xschem.h

@@ -773,9 +773,6 @@ struct hilight_hashentry
   int time; /*delta-time for sims */
 };
 
-
-
-
 typedef struct {
   /* spice raw file specific data */
   char **names;
@@ -801,9 +798,6 @@ typedef struct {
   double sweep1, sweep2;
 } Raw;
 
-
-
-
 /*  for netlist.c */
 typedef struct instpinentry Instpinentry;
 struct instpinentry

src/xschem.tcl

@@ -9103,7 +9103,8 @@ set_ne flat_netlist 0
 set_ne netlist_show 0
 set_ne color_ps 1
 set_ne ps_page_title 1 ;# add a title in the top left page corner
-set_ne crosshair_layer 3 ;# TEXTLAYER
+set_ne draw_crosshair 0
+set_ne crosshair_layer 8 ;# Yellow
 set_ne crosshair_size 0
 set_ne ps_paper_size {a4 842 595}
 set_ne transparent_svg 0
@@ -9128,7 +9129,6 @@ set_ne load_file_dialog_fullpath 1
 set_ne incremental_select 1
 set_ne select_touch 1
 
-set_ne draw_crosshair 0
 set_ne draw_grid 1
 set_ne big_grid_points 0
 set_ne draw_grid_axes 1

src/xschemrc

@@ -279,8 +279,8 @@
 #### enable drawing crosshairs at mouse coordinates. Default: disabled (0)
 # set draw_crosshair 1
 
-#### set crosshair layer; Default 3 (TEXTLAYER)
+#### set crosshair layer; Default 8 (Yellow)
-# set crosshair_layer 3
+# set crosshair_layer 8
 
 #### set crosshair size; Default: 0 (full screen spanning crosshair) 
 # set crosshair_size 5