Mixer: Improve the mousewheel behavior of Fl_Arc_Dial and add Fl_Value_SliderX.

You can now hold down the ctrl key for more precision.

FL/Fl_Arc_Dial.C

@@ -24,6 +24,7 @@
 #include <Fl/Fl.H>
 #include <string.h>
 #include <stdio.h>
+#include <math.h>
 
 int
 Fl_Arc_Dial::handle ( int m )
@@ -37,14 +38,31 @@ Fl_Arc_Dial::handle ( int m )
             if ( this != Fl::belowmouse() )
                 return 0;
 
-            int d = Fl::event_dy();
+            int steps = 16;
 
-            double v = increment( value(), d );
+            if ( Fl::event_ctrl() )
+                steps = 128;
 
-            if ( v < minimum() )
-                v = minimum();
-            else if ( v > maximum() )
-                v = maximum();
+            float step = fabs( maximum() - minimum() ) / (float)steps;
+
+            float d = ((float)Fl::event_dy()) * step;
+
+            double v = value() + d;
+
+            if ( maximum() > minimum() )
+            {
+                if ( v < minimum() )
+                    v = minimum();
+                else if ( v > maximum() )
+                    v = maximum();
+            }
+            else
+            {
+                if ( v > minimum() )
+                    v = minimum();
+                else if ( v < maximum() )
+                    v = maximum();
+            }
 
             value( v );
             do_callback();

FL/Fl_Value_SliderX.H

@@ -0,0 +1,88 @@
+
+/*******************************************************************************/
+/* Copyright (C) 2009 Jonathan Moore Liles                                     */
+/*                                                                             */
+/* This program is free software; you can redistribute it and/or modify it     */
+/* under the terms of the GNU General Public License as published by the       */
+/* Free Software Foundation; either version 2 of the License, or (at your      */
+/* option) any later version.                                                  */
+/*                                                                             */
+/* This program is distributed in the hope that it will be useful, but WITHOUT */
+/* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or       */
+/* FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for   */
+/* more details.                                                               */
+/*                                                                             */
+/* You should have received a copy of the GNU General Public License along     */
+/* with This program; see the file COPYING.  If not,write to the Free Software */
+/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+/*******************************************************************************/
+
+/* just like an Fl_Value_Slider, except that it responds to mousewheel events */
+
+#pragma once
+
+#include <FL/Fl_Value_Slider.H>
+#include <FL/Fl.H>
+#include <math.h>
+
+class Fl_Value_SliderX : public Fl_Value_Slider
+{
+
+public:
+
+    Fl_Value_SliderX ( int X, int Y, int W, int H, const char *L = 0 )
+        : Fl_Value_Slider( X, Y, W, H, L )
+        {
+        }
+
+    virtual ~Fl_Value_SliderX() { }
+
+    virtual int handle ( int m )
+        {
+
+            /* Fl_Value_Slider and friends should really handle mousewheel, but they don't in FTLK1 */
+
+
+            switch ( m )
+            {
+                case FL_MOUSEWHEEL:
+                {
+                    if ( this != Fl::belowmouse() )
+                        return 0;
+
+                    int steps = 16;
+
+                    if ( Fl::event_ctrl() )
+                        steps = 128;
+
+                    float step = fabs( maximum() - minimum() ) / (float)steps;
+
+                    float d = ((float)Fl::event_dy()) * step;
+
+                    double v = value() + d;
+
+                    if ( maximum() > minimum() )
+                    {
+                        if ( v < minimum() )
+                            v = minimum();
+                        else if ( v > maximum() )
+                            v = maximum();
+                    }
+                    else
+                    {
+                        if ( v > minimum() )
+                            v = minimum();
+                        else if ( v < maximum() )
+                            v = maximum();
+                    }
+
+                    value( v );
+                    do_callback();
+
+                    return 1;
+                }
+            }
+
+            return Fl_Value_Slider::handle( m );
+        }
+};

Mixer/Controller_Module.C

@@ -20,7 +20,7 @@
 #include "Controller_Module.H"
 
 #include <FL/Fl.H>
-#include <FL/Fl_Value_Slider.H>
+#include "FL/Fl_Value_SliderX.H"
 #include <FL/Fl_Box.H>
 #include <FL/Fl_Counter.H>
 #include "FL/Fl_Arc_Dial.H"
@@ -151,7 +151,7 @@ Controller_Module::connect_to ( Port *p )
     }
     else if ( p->hints.type == Module::Port::Hints::LOGARITHMIC )
     {
-        Fl_Value_Slider *o = new Fl_Value_Slider(0, 0, 30, 250, p->name() );
+        Fl_Value_SliderX *o = new Fl_Value_SliderX(0, 0, 30, 250, p->name() );
         control = o;
         w = o;
 
@@ -160,7 +160,6 @@ Controller_Module::connect_to ( Port *p )
         o->selection_color((Fl_Color)1);
         o->minimum(1.5);
         o->maximum(0);
-        o->step(0.01);
         o->value(1);
         o->textsize(14);
 
@@ -192,7 +191,6 @@ Controller_Module::connect_to ( Port *p )
             o->color( fl_darker( fl_darker( FL_GRAY ) ) );
             o->selection_color( FL_WHITE );
             o->value( p->control_value() );
-
         }
 
     }

Mixer/Controller_Module.H

@@ -47,8 +47,8 @@ public:
 
     const char *name ( void ) const { return "Controller"; }
 
-    int can_support_inputs ( int n ) { return 0; }
-    bool configure_inputs ( int n ) { return false; }
+    int can_support_inputs ( int ) { return 0; }
+    bool configure_inputs ( int ) { return false; }
 
     void pad ( bool v ) { _pad = v; }
 

Mixer/Module_Parameter_Editor.C

@@ -19,7 +19,7 @@
 
 #include <FL/fl_draw.H>
 #include <FL/Fl_Pack.H>
-#include <FL/Fl_Value_Slider.H>
+#include "FL/Fl_Value_SliderX.H"
 #include <FL/Fl_Box.H>
 #include <FL/Fl_Counter.H>
 #include "FL/Fl_Arc_Dial.H"
@@ -35,6 +35,7 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <util/debug.h>
+#include <math.h>
 
 
 
@@ -172,10 +173,11 @@ Module_Parameter_Editor::make_controls ( void )
                 o->selection_color( FL_WHITE );
                 o->value( p->control_value() );
 
+//                o->step( fabs( ( o->maximum() - o->minimum() ) ) / 32.0f );
             }
             else
             {
-                Fl_Value_Slider *o = new Fl_Value_Slider( 0, 0, 120, 24, p->name() );
+                Fl_Value_SliderX *o = new Fl_Value_SliderX( 0, 0, 120, 24, p->name() );
                 w = o;
 
                 if ( mode_choice->value() == 1 )
@@ -198,6 +200,7 @@ Module_Parameter_Editor::make_controls ( void )
                     o->minimum( p->hints.maximum );
                 }
 
+//                o->step( fabs( ( o->maximum() - o->minimum() ) ) / 32.0f );
                 o->slider( FL_THIN_UP_BOX );
                 o->color( fl_darker( fl_darker( FL_GRAY ) ) );
                 o->selection_color( FL_WHITE );