#include "modgmt_func.h"

ObjectBase* GMT_Header(const ObjectList* input)
{
 return new ObjectString(header);
}

ObjectBase* GMT_Footer(const ObjectList* input)
{
 return new ObjectString(footer);
}

ObjectBase* GMT_ColorGray(const ObjectList* input)
{
 struct gmt_color c;
 bool suc=true;
 Base2RGB g(input,0);
 Base2Transp t(input,1);

 c.model=gmt_color::GRAY;
 c.gray=g(&suc);
 c.transparency=t(&suc);

 if(suc) return new ObjectGMTColor(c);
 else return 0;
}

ObjectBase* GMT_ColorRGB(const ObjectList* input)
{
 struct gmt_color c;
 bool suc=true;
 Base2RGB r(input,0),g(input,1),b(input,2);
 Base2Transp t(input,3);

 c.model=gmt_color::RGB;
 c.r=r(&suc);
 c.g=g(&suc);
 c.b=b(&suc);
 c.transparency=t(&suc);

 if(suc) return new ObjectGMTColor(c);
 else return 0;
}

ObjectBase* GMT_ColorHSV(const ObjectList* input)
{
 struct gmt_color c;
 bool suc=true;
 Base2Hue h(input,0);
 Base2SV s(input,1),v(input,2);
 Base2Transp t(input,3);

 c.model=gmt_color::HSV;
 c.hue=h(&suc);
 c.saturation=s(&suc);
 c.value=v(&suc);
 c.transparency=t(&suc);

 if(suc) return new ObjectGMTColor(c);
 else return 0;
}

ObjectBase* GMT_ColorCMYK(const ObjectList* input)
{
 struct gmt_color c;
 bool suc=true;
 Base2CMYK cyan(input,0),m(input,1),y(input,2),k(input,3);
 Base2Transp t(input,4);

 c.model=gmt_color::CMYK;
 c.cyan=cyan(&suc);
 c.magenta=m(&suc);
 c.yellow=y(&suc);
 c.black=k(&suc);
 c.transparency=t(&suc);

 if(suc) return new ObjectGMTColor(c);
 else return 0;
}

// Shifting layer
/*
Input:
1) Three arguments, first is Layer, second and third are double. Interprets as new absolute position in cm.
2) Pairs list. Names are l (layer), x, y, xrel (xr), yrel (yr). Pair with name l may be absent, in this case search in list and using as layer object with ObjectGMTLayer type. x and y are absolute positions in cm, xrel and yrel are shift from current position. x (y) and xrel (yrel) are mutually exlusive, but x (y) and yrel (xrel) can be used simultaneously. If position for some axis is absent, then this position is unchanged.
*/
ObjectBase* GMT_LayerShift(const ObjectList* input)
{
 auto size=input->Size();
 struct gmt_layer layer;

 // Case 1
 if(3==size)
 {
  Base2Layer l(input,0);
  Base2Double x(input,1), y(input,2);
  bool suc=true;
  layer=l(&suc);
  if(!suc) goto case2;
  layer.shiftx=x(&suc);
  layer.shifty=y(&suc);
  if(!suc) goto case2;
  return new ObjectGMTLayer(layer);
 }

 case2:

 // Search layer for shifting
 {
  SearchParameter<struct gmt_layer> original(input,"layer","l");
  bool suc=true;
  layer=original(&suc);
  if(!suc) goto fail; // Conversion failed or too many arguments
 }
 // Do shift
 {
  BaseM2Double xr(input,"xrel","xr"), yr(input,"yrel","yr");
  Base2Double x(input,"x"), y(input,"y");
  bool suc=true;
  // Check duplicate parameters
  if( ( x.Exist() && xr.Exist() ) || ( y.Exist() && yr.Exist() ) ) goto fail;
  if(x.Exist()) layer.shiftx=x(&suc);
  if(y.Exist()) layer.shifty=y(&suc);
  if(xr.Exist()) layer.shiftx+=x(&suc);
  if(yr.Exist()) layer.shifty+=y(&suc);
  if(!suc) goto fail;
 }

 return new ObjectGMTLayer(layer);

 fail:
 return 0;
}