Improve widget part caching

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

diff --git a/source/hslider.h b/source/hslider.h
index 25ad0b19e597061f856496ade7e8d4085bfce92d..cb0252731c80660235b70c45cc8e4917ecd7c307 100644 (file)
--- a/source/hslider.h
+++ b/source/hslider.h
@@ -6,21 +6,32 @@
 namespace Msp {
 namespace GLtk {
 
+/**
+Horizontal slider widget.  A special part named "slider" will be positioned at
+the current value of the widget.
+*/
 class HSlider: public Slider
 {
+private:
+       unsigned slider_size;
+
 public:
-       HSlider(const Resources &);
-       void button_press(int, int, unsigned);
-       void button_release(int, int, unsigned);
-       void pointer_motion(int, int);
+       HSlider();
+
+       virtual const char *get_class() const { return "hslider"; }
+
+       virtual void autosize();
+
 private:
-       bool dragging;
-       int drag_start_x;
-       double drag_start_value;
+       virtual void rebuild_special(const Part &);
 
-       const char *get_class() const { return "hslider"; }
-       void render_part(const Part &) const;
-       unsigned get_slider_width() const;
+public:
+       virtual void button_press(int, int, unsigned);
+       virtual void button_release(int, int, unsigned);
+       virtual void pointer_motion(int, int);
+private:
+       virtual void on_geometry_change();
+       virtual void on_style_change();
 };
 
 } // namespace GLtk