#include <rgbSlide.h>
#include <algorithm>
#include <iostream>

using std::min;
using std::max;

RgbSlide::RgbSlide(int x, int y, ColorRGB *s)
	: Fl_Group(x,y,272,100), sujeto(s)
{
	int bw = w();
	int bh = h();
	int margen = 4;

	frame = new Fl_Box(x,y,w(),h());
   frame->box(FL_EMBOSSED_BOX);

	int vsx = x+2*margen + 15; 
	int vsy = y+2*margen; 
	int vsw = 246;// w()-3*margen-15; 
	int vsh = 28;
	int sepVert = 30; 

	vsRed = new Fl_Value_Slider(vsx, vsy, vsw, vsh, "R");
	vsRed->type      (FL_HOR_SLIDER);
	vsRed->maximum   (255);
	vsRed->step      (1);
	vsRed->align     (FL_ALIGN_LEFT);
	vsRed->labelcolor(FL_RED);
	vsRed->callback(cambioCB,(long)FL_RED);

	vsGreen = new Fl_Value_Slider(vsx, vsy+sepVert, vsw, vsh, "G");
	vsGreen->type(FL_HOR_SLIDER);
	vsGreen->maximum(255);
	vsGreen->step(1);
	vsGreen->align(FL_ALIGN_LEFT);
	vsGreen->labelcolor(FL_GREEN);
	vsGreen->callback(cambioCB,(long)FL_GREEN);

	vsBlue = new Fl_Value_Slider(vsx, vsy+2*sepVert, vsw, vsh, "B");
	vsBlue->type(FL_HOR_SLIDER);
	vsBlue->maximum(255);
	vsBlue->step(1);
	vsBlue->align(FL_ALIGN_LEFT);
	vsBlue->labelcolor(FL_BLUE);
	vsBlue->callback(cambioCB,(long)FL_BLUE);

	end(); // importante!!

	sujeto = s;
	sujeto->suscribir(this);
}

void RgbSlide::actualizar(Sujeto *s)
{
	static uchar r, g, b;
   if (s == sujeto)
	{
		sujeto->getRGB(r,g,b);
		_setRGB(r,g,b);
	}
}

void RgbSlide::getRGB(uchar &r, uchar &g, uchar &b) 
{ 
	r = (uchar) vsRed->value(); 
	g = (uchar) vsGreen->value(); 
	b = (uchar) vsBlue->value(); 
}

void RgbSlide::_setRGB(int r, int g, int b)
{
	vsRed->value(r);
	vsGreen->value(g);
	vsBlue->value(b);
}

void RgbSlide::setRGB(int r, int g, int b)
{
	sujeto->setRGB(r,g,b);
}

void RgbSlide::cambioCB(Fl_Widget *w, long color)
{
	static uchar r, g, b;

	RgbSlide *rgbSlide = (RgbSlide *)w->parent();
	rgbSlide->getRGB(r,g,b);
	
	Fl_Value_Slider *vs = (Fl_Value_Slider *)w;
	switch (color)
	{ 
		case FL_RED: r = (uchar) vs->value(); break;
		case FL_GREEN: g = (uchar) vs->value(); break;
		case FL_BLUE: b = (uchar) vs->value(); break;
	}
	rgbSlide->setRGB(r,g,b);
}