Remove unnecessary Fl_Widget_Tracker from Fl_Dial's handle().

handle_push() doesn't call a callback, hence Fl_Widget_Tracker is not
necessary.

Added FALLTHROUGH and NOTREACHED comments.


git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12279 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

src/Fl_Dial.cxx

@@ -103,10 +103,9 @@ void Fl_Dial::draw() {
 */
 int Fl_Dial::handle(int event, int X, int Y, int W, int H) {
   switch (event) {
-  case FL_PUSH: {
-    Fl_Widget_Tracker wp(this);  
+  case FL_PUSH:
     handle_push();
-    if (wp.deleted()) return 1; }
+    /* FALLTHROUGH */
   case FL_DRAG: {
     int mx = (Fl::event_x()-X-W/2)*H;
     int my = (Fl::event_y()-Y-H/2)*W;
@@ -124,12 +123,13 @@ int Fl_Dial::handle(int event, int X, int Y, int W, int H) {
       val = minimum() + (maximum()-minimum())*(angle-a1)/(a2-a1);
     }
     handle_drag(clamp(round(val)));
-  } return 1;
+    return 1;
+  } /* NOTREACHED */
   case FL_RELEASE:
     handle_release();
     return 1;
-  case FL_ENTER : /* FALLTHROUGH */
-  case FL_LEAVE :
+  case FL_ENTER: /* FALLTHROUGH */
+  case FL_LEAVE:
     return 1;
   default:
     return 0;
@@ -163,8 +163,7 @@ Fl_Fill_Dial::Fl_Fill_Dial(int X,int Y,int W,int H, const char *L)
 
 
 Fl_Line_Dial::Fl_Line_Dial(int X,int Y,int W,int H, const char *L)
-: Fl_Dial(X,Y,W,H,L) 
-{
+: Fl_Dial(X,Y,W,H,L) {
   type(FL_LINE_DIAL);
 }