#include <rgbInt.h>
#include <algorithm>

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

RgbInt::RgbInt(int x, int y)
  : Fl_Group(x,y,82,100)
{
	int bw = w();
	int bh = h();
	int margen = 4;

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

	int vix = x+2*margen + 36; //15; 
	int viy = y+2*margen; 
	//int viw = 200;// w()-3*margen-15; 
	int viw = 36;// w()-3*margen-15; 
	int vih = 28;
	int sepVert = 30; 

	viRed = new Fl_Value_Input(vix, viy, viw, vih, "R ent");
	viRed->maximum   (255);
	viRed->step      (1);
	viRed->labelcolor(FL_RED);
	viRed->callback(cambioCB,(long)FL_RED);

	viGreen = new Fl_Value_Input(vix, viy+sepVert, viw, vih, "G ent");
	viGreen->maximum(255);
	viGreen->step(1);
	viGreen->labelcolor(FL_GREEN);
	viGreen->callback(cambioCB,(long)FL_GREEN);

	viBlue = new Fl_Value_Input(vix, viy+2*sepVert, viw, vih, "B ent");
	viBlue->maximum(255);
	viBlue->step(1);
	viBlue->labelcolor(FL_BLUE);
	viBlue->callback(cambioCB,(long)FL_BLUE);

	end(); // importante!!
}

void RgbInt::getRGB(uchar &r, uchar &g, uchar &b) 
{ 
	r = (uchar) viRed->value(); 
	g = (uchar) viGreen->value(); 
	b = (uchar) viBlue->value(); 
}

void RgbInt::_setRGB(int r, int g, int b)
{
  viRed->value(r);
  viGreen->value(g);
  viBlue->value(b);
}

void RgbInt::setRGB(int r, int g, int b)
{

}

void RgbInt::cambioCB(Fl_Widget *w, long color)
{
  static uchar r, g, b;
  const static double MIN = 0.0;
  const static double MAX = 255.0;

  RgbInt *rgbInt = (RgbInt *)w->parent();
  rgbInt->getRGB(r,g,b);
	
  Fl_Value_Input *vi = (Fl_Value_Input *)w;
  double val = max(MIN, min(vi->value(), MAX));

  switch (color)
  { 
  case FL_RED: r = (uchar) val; break;
  case FL_GREEN: g = (uchar) val; break;
  case FL_BLUE: b = (uchar) val; break;
  }
  
  rgbInt->setRGB(r,g,b);
}