Rework how widget ownership works in Container

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

diff --git a/source/slider.h b/source/slider.h
index c88c15b9f10f84354db7a36465fb53019ecfb2b2..057b194a2c532d7d96f9a96c421a63b2f21bb84f 100644 (file)
--- a/source/slider.h
+++ b/source/slider.h
@@ -1,24 +1,92 @@
 #ifndef MSP_GLTK_SLIDER_H_
 #define MSP_GLTK_SLIDER_H_
 
+#include <sigc++/sigc++.h>
+#include "mspgltk_api.h"
 #include "widget.h"
 
 namespace Msp {
 namespace GLtk {
 
-class Slider: public Widget
+/**
+Sliders are used to adjust numeric values visually.  This class provides the
+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 MSPGLTK_API Slider: public Widget
 {
+public:
+       class MSPGLTK_API Loader: public DataFile::DerivedObjectLoader<Slider, Widget::Loader>
+       {
+       public:
+               Loader(Slider &);
+       };
+
+protected:
+       enum Direction
+       {
+               HORIZONTAL,
+               VERTICAL
+       };
+
+public:
+       sigc::signal<void, double> signal_value_changed;
+
+protected:
+       Direction dir;
+       double min = 0.0;
+       double max = 1.0;
+       double value = 0.0;
+       double step = 0.1;
+       double page_size = 0.25;
+
+       bool dragging = false;
+       double drag_start_pos = 0.0;
+       double drag_start_value = 0.0;
+       unsigned drag_area_size = 0;
+       unsigned drag_area_offset = 0;
+       unsigned slider_min_size = 1;
+       unsigned slider_size = 1;
+       unsigned total_margin = 0;
+
+       Slider(Direction);
+
 public:
        void set_value(double);
        void set_range(double, double);
        void set_step(double);
+       void set_page_size(double);
        double get_value() const { return value; }
+
 protected:
-       double min, max;
-       double value;
-       double step;
+       void autosize_special(const Part &, Geometry &) const override;
+       void rebuild_special(const Part &) override;
+
+public:
+       void button_press(int, int, unsigned) override;
+       void button_release(int, int, unsigned) override;
+       void pointer_motion(int, int) override;
+
+protected:
+       void on_size_change() override;
+       void on_style_change() override;
+};
+
+
+class MSPGLTK_API VSlider: public Slider
+{
+public:
+       VSlider(): Slider(VERTICAL) { }
+
+       const char *get_class() const override { return "vslider"; }
+};
+
+class MSPGLTK_API HSlider: public Slider
+{
+public:
+       HSlider(): Slider(HORIZONTAL) { }
 
-       Slider(const Resourcres &);
+       const char *get_class() const override { return "hslider"; }
 };
 
 } // namespace GLtk