Refactor all slider logic into the Slider class

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

diff --git a/source/slider.h b/source/slider.h
index e2d810994c51387dab238b0d38fc78d9fb59a6f0..b6041af96480320c8fa5643a313c6cdb96958b69 100644 (file)
--- a/source/slider.h
+++ b/source/slider.h
@@ -9,22 +9,30 @@ namespace GLtk {
 
 /**
 Sliders are used to adjust numeric values visually.  This class provides the
-common interface for sliders - see classes HSlider and VSlider for concrete
-variations.
+common interface and logic for sliders but can't be instantiated.  Use HSlider
+or VSlider depending on which direction you want the slider to be in.
 */
 class Slider: public Widget
 {
 public:
-       class Loader: public Widget::Loader
+       class Loader: public DataFile::DerivedObjectLoader<Slider, Widget::Loader>
        {
        public:
                Loader(Slider &);
-               Slider &get_object() const;
        };
 
+protected:
+       enum Direction
+       {
+               HORIZONTAL,
+               VERTICAL
+       };
+
+public:
        sigc::signal<void, double> signal_value_changed;
 
 protected:
+       Direction dir;
        double min, max;
        double value;
        double step;
@@ -33,8 +41,11 @@ protected:
        double drag_start_pos;
        double drag_start_value;
        unsigned drag_area_size;
+       unsigned drag_area_offset;
+       unsigned slider_size;
+       unsigned total_margin;
 
-       Slider();
+       Slider(Direction);
 
 public:
        void set_value(double);
@@ -43,9 +54,34 @@ public:
        double get_value() const { return value; }
 
 protected:
-       void start_drag(int);
-       void drag(int);
-       void end_drag();
+       virtual void autosize_special(const Part &, Geometry &) const;
+       virtual void rebuild_special(const Part &);
+
+public:
+       virtual void button_press(int, int, unsigned);
+       virtual void button_release(int, int, unsigned);
+       virtual void pointer_motion(int, int);
+
+protected:
+       virtual void on_size_change();
+       virtual void on_style_change();
+};
+
+
+class VSlider: public Slider
+{
+public:
+       VSlider(): Slider(VERTICAL) { }
+
+       virtual const char *get_class() const { return "vslider"; }
+};
+
+class HSlider: public Slider
+{
+public:
+       HSlider(): Slider(HORIZONTAL) { }
+
+       virtual const char *get_class() const { return "hslider"; }
 };
 
 } // namespace GLtk