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 a95a6a57665fd905577d3e76f54afa76ef5313f1..b6041af96480320c8fa5643a313c6cdb96958b69 100644 (file)
--- a/source/slider.h
+++ b/source/slider.h
@@ -9,8 +9,8 @@ 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
 {
@@ -21,9 +21,18 @@ public:
                Loader(Slider &);
        };
 
+protected:
+       enum Direction
+       {
+               HORIZONTAL,
+               VERTICAL
+       };
+
+public:
        sigc::signal<void, double> signal_value_changed;
 
 protected:
+       Direction dir;
        double min, max;
        double value;
        double step;
@@ -34,8 +43,9 @@ protected:
        unsigned drag_area_size;
        unsigned drag_area_offset;
        unsigned slider_size;
+       unsigned total_margin;
 
-       Slider();
+       Slider(Direction);
 
 public:
        void set_value(double);
@@ -44,10 +54,34 @@ public:
        double get_value() const { return value; }
 
 protected:
-       void click(int);
-       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