#include <cstring>

#include "IupColorCalibrationDlg.h"

int IupColorCalibrationDlg::_changeValueCB(Ihandle *self, double val)
{
  IupColorCalibrationDlg* dlg;
  dlg = (IupColorCalibrationDlg*)IupGetAttribute(self, "this");
  if(!dlg) return IUP_DEFAULT;

  if(!strcmp(IupGetAttribute(self, "color"), "RED")) 
	  dlg->r_ = (float)val;
  if(!strcmp(IupGetAttribute(self, "color"), "GREEN")) 
	  dlg->g_ = (float)val;
  if(!strcmp(IupGetAttribute(self, "color"), "BLUE")) 
	  dlg->b_ = (float)val;

  dlg->repaintCanvas();

  return IUP_DEFAULT;
}

int IupColorCalibrationDlg::_repaintCanvasCB(Ihandle *self, float x, float y)
{
  IupColorCalibrationDlg* dlg;
  dlg = (IupColorCalibrationDlg*)IupGetAttribute(self, "this");
  if(!dlg) return IUP_DEFAULT;

  dlg->repaintCanvas();

  return IUP_DEFAULT;
}

int IupColorCalibrationDlg::_okCB(Ihandle* self)
{
  IupColorCalibrationDlg* dlg;
  dlg = (IupColorCalibrationDlg*)IupGetAttribute(self, "this");

  return IUP_CLOSE;
}

int IupColorCalibrationDlg::_cancelCB(Ihandle* self)
{
  return IUP_CLOSE;
}

Ihandle* createValControl(IupColorCalibrationDlg* dlg, char* color)
{
  Ihandle* val = IupVal(ICTL_VERTICAL);
  IupSetAttribute(val, "MIN", "0");
  IupSetAttribute(val, "MAX", "1");
  IupSetAttribute(val, "VALUE", "1");
  IupSetAttribute(val, "SHOWTICKS", "7");
  IupSetAttribute(val, "color", color);
  IupSetAttribute(val, "this", (char*)dlg);
  IupSetAttribute(val, IUP_MOUSEMOVE_CB, "colorCalibration_changeValCB");

  return val;
}

IupColorCalibrationDlg::IupColorCalibrationDlg()
{
  Ihandle *okbtn, *cancelbtn, *box, *redval, *greenval, *blueval, *canvas;

  r_ = 1.0f;
  g_ = 1.0f;
  b_ = 1.0f;

  canvas = IupCanvas("colorCalibration_repaintCanvasCB");
  IupSetAttributes(canvas, "RASTERSIZE=400x160, XMIN=0, XMAX=99, POSX=0, DX=10");
  IupSetAttribute(canvas, "this", (char*)this);
  IupSetFunction("colorCalibration_repaintCanvasCB", (Icallback)_repaintCanvasCB);

  redval = createValControl(this, "RED");
  greenval = createValControl(this, "GREEN");
  blueval = createValControl(this, "BLUE");

  IupSetFunction("colorCalibration_changeValCB", (Icallback)_changeValueCB);

  okbtn = IupButton("Ok", "colorCalibration_okCB");
  IupSetFunction("colorCalibration_okCB", (Icallback)_okCB);
  IupSetAttribute(okbtn, "this", (char*)this);
 
  cancelbtn = IupButton("Cancel", "colorCalibration_cancelCB");
  IupSetFunction("colorCalibration_cancelCB", (Icallback)_cancelCB);
  IupSetAttribute(cancelbtn, "this", (char*)this);
 
  box = IupVbox(
			canvas, 
			IupHbox(
				IupFill(),
				IupVbox(
					redval,
					IupLabel("Red"),
					0),
				IupFill(), 
				IupVbox(
					greenval, 
					IupLabel("Green"),
					0),
				IupFill(), 
				IupVbox(
					blueval, 
					IupLabel("Blue"),
					0),
				IupFill(), 
				0), 
			IupHbox(
				IupFill(),
				okbtn, 
//				cancelbtn, 
				0), 
			0);

  dlg = IupDialog(box);

  IupStoreAttribute(dlg, "this", (char*)this);
  IupStoreAttribute(dlg,IUP_MAXBOX,IUP_NO);
  IupStoreAttribute(dlg,IUP_RESIZE,IUP_NO);

  IupSetAttribute(dlg, IUP_TITLE, "Calibracao de Cores");

  IupStoreAttribute(dlg, IUP_CLOSE_CB, "colorCalibration_close");
  IupSetFunction("colorCalibration_close", (Icallback)_cancelCB);

  IupMap(dlg);
  cdcanvas_ = cdCreateCanvas(CD_IUP, canvas);
}

IupColorCalibrationDlg::~IupColorCalibrationDlg()
{
  IupDestroy(dlg);
}

void IupColorCalibrationDlg::getColorFactors(float& r, float& g, float& b)
{
  r = r_; g = g_; b = b_;
}

void IupColorCalibrationDlg::show()
{
  IupPopup(dlg, IUP_CENTER, IUP_CENTER);
//  IupShowXY(dlg, IUP_CENTER, IUP_CENTER);
}

void IupColorCalibrationDlg::repaintCanvas()
{
  cdActivate(cdcanvas_);

  long int backColor = cdEncodeColor(0, 0, 0);
  cdBackground(backColor);

  cdClear();

  long int redColor = cdEncodeColor((unsigned char)(255*r_), 0, 0);
  cdForeground(redColor);
  cdBox(40, 120, 40, 120);

  long int greenColor = cdEncodeColor(0, (unsigned char)(255*g_), 0);
  cdForeground(greenColor);
  cdBox(160, 240, 40, 120);

  long int blueColor = cdEncodeColor(0, 0, (unsigned char)(255*b_));
  cdForeground(blueColor);
  cdBox(280, 360, 40, 120);
}