Add mousewheel handling.

2008-03-14 19:23:03 -05:00 · 2008-03-14 19:23:03 -05:00 · c88ef27abf
parent cf9cbd2691
commit c88ef27abf
1 changed files with 31 additions and 0 deletions
--- a/Fl_Arc_Dial.H
+++ b/Fl_Arc_Dial.H
@ -34,10 +34,41 @@ public:
        Fl_Dial( X, Y, W, H, L )
        {
            box( FL_OVAL_BOX );
+//            step( 0.1f );
        }

 protected:

+    int handle ( int m )
+        {
+            /* Fl_Dial and friends should really handle mousewheel, but they don't in FTLK1 */
+
+            switch ( m )
+            {
+                case FL_MOUSEWHEEL:
+                {
+                    if ( this != Fl::belowmouse() )
+                        return 0;
+
+                    int d = Fl::event_dy();
+
+                    double v = increment( value(), d );
+
+                    if ( v < minimum() )
+                        v = minimum();
+                    else if ( v > maximum() )
+                        v = maximum();
+
+                    value( v );
+
+                    return 1;
+                }
+            }
+
+            return Fl_Dial::handle( m );
+        }
+
+
    virtual void
    draw ( void )
        {