#ifndef WIDGET_H
#define WIDGET_H

#include <climits>
#include <list>

struct Rect {
	int x;
	int y;
	int w;
	int h;

	inline bool Hit(int hitx, int hity)
	{
		return hitx >= x && hitx < x + w && hity >= y && hity < y + h;
	}
};

struct Colour {
	float r, g, b, a;

	Colour() {}
	Colour(float r, float g, float b) : r(r), g(g), b(b), a(1.f) {}
	Colour(float r, float g, float b, float a) : r(r), g(g), b(b), a(a) {}
};

/* Forward declaration of PUi for OnPaint() member */
struct PUi;

struct Widget : Rect {
	uint32_t port;
	float min;
	float max;
	float value;
	char group[128];
	char label[128];
	char text[128];

	bool active;

	Widget() : port(UINT_MAX) {}

	virtual ~Widget() {}

	virtual Widget *GetWidget(int x, int y) { return this; }
	virtual Widget *GetWidget(uint32_t port) { return this->port == port ? this : NULL; }
	virtual float GetNewValue(int x, int y) { return this->value; }
	virtual bool SetValue(float newvalue);

	virtual void OnPaint(const PUi *pui) const {}

	void Pad(int xpad, int ypad);
};

struct Frame : Widget {
	Colour colour;

	/* virtual */ void OnPaint(const PUi *pui) const;
};

#endif /* WIDGET_H */