Fix HSlider

[libs/gltk.git] / source / slider.h

diff --git a/source/slider.h b/source/slider.h
index 8eb373667405dbb17cc25bb22fc5f9167b985eb9..6c95526f13f2699f14c89049fe5f252510383a2e 100644 (file)
--- a/source/slider.h
+++ b/source/slider.h
@@ -16,16 +16,29 @@ namespace GLtk {
 
 /**
 Sliders are used to adjust numeric values visually.  This class provides the
-common interface for sliders - see classes HSlider and VSlider (NYI) for
-concrete variations.
+common interface for sliders - see classes HSlider and VSlider for concrete
+variations.
 */
 class Slider: public Widget
 {
+public:
+       class Loader: public Widget::Loader
+       {
+       public:
+               Loader(Slider &);
+               Slider &get_object() const;
+       };
+
 protected:
        double min, max;
        double value;
        double step;
 
+       bool dragging;
+       double drag_start_pos;
+       double drag_start_value;
+       unsigned drag_area_size;
+
 public:
        sigc::signal<void, double> signal_value_changed;
 
@@ -36,6 +49,10 @@ public:
        void set_range(double, double);
        void set_step(double);
        double get_value() const { return value; }
+protected:
+       void start_drag(int);
+       void drag(int);
+       void end_drag();
 };
 
 } // namespace GLtk