slider.h

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#ifndef ASW_MODULES_UI_SLIDER_H
#define ASW_MODULES_UI_SLIDER_H
 
#include <functional>
#include <optional>
 
#include "context.h"
#include "widget.h"
 
namespace asw::ui {
 
class Slider : public Widget {
public:
    Slider()
    {
        focusable = true;
    }
 
    float value = 0.0F;
 
    float min = 0.0F;
 
    float max = 1.0F;
 
    float step = 0.1F;
 
    bool snap = false;
 
    std::function<void(float)> on_change;
 
    std::optional<bool> adjust_on_left_right;
 
    bool adjusts_left_right() const;
 
    bool is_editing() const
    {
        return _editing;
    }
 
    std::optional<SliderStyle> style;
 
    const SliderStyle& get_style(const Context& ctx) const
    {
        return style ? *style : ctx.theme.slider;
    }
 
    void set_value(float v);
 
    void activate(Context& ctx) override;
 
    void on_focus_changed(Context& ctx, bool focused) override;
 
    bool on_event(Context& ctx, const UIEvent& e) override;
 
    void draw(Context& ctx) override;
 
private:
    bool _editing = false;
 
    void change(float v);
    void set_from_pointer(float x);
};
 
} // namespace asw::ui
 
#endif // ASW_MODULES_UI_SLIDER_H