/*
  Copyright 2013 Peter Nelson

  Permission to use, copy, modify, and/or distribute this software for any
  purpose with or without fee is hereby granted, provided that the above
  copyright notice and this permission notice appear in all copies.

  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef WIDGET_H
#define WIDGET_H

#include <climits>
#include <list>

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

	Rect() : x(0), y(0), w(0), h(0) {}

	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() : r(0), g(0), b(0), a(0) {}
	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), min(0.f), max(1.f), value(0.f), active(false) {}

	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 */