//----------------------------------------------------------------------------
//  EgalTech 2014-2014
//----------------------------------------------------------------------------
// File : FontAux.cpp        Data : 05.06.14         Versione : 1.5f2
// Contenuto : Implementazione delle funzioni ausiliarie per i font.
//
//
//
// Modifiche : 05.06.14 DS Creazione modulo.
//
//
//----------------------------------------------------------------------------

//--------------------------- Include ----------------------------------------
#include "stdafx.h"
#include "FontAux.h"
#include "/EgtDev/Include/EGkExtText.h"
#include "/EgtDev/Include/EgtNumUtils.h"

//----------------------------------------------------------------------------
double
AdjustFontRatio( double dRatio)
{
  // se nullo viene posto a 1
   if ( abs( dRatio) < EPS_SMALL)
      return 1.0 ;
  // altrimenti deve stare nei limiti
   const double MIN_FONT_RATIO = 0.1 ;
   const double MAX_FONT_RATIO = 10.0 ;
   return Clamp( dRatio, MIN_FONT_RATIO, MAX_FONT_RATIO) ;
}

//----------------------------------------------------------------------------
bool
IsLineBreak( const UINTVECTOR& vCode, int nInd, int& nLen)
{
  // riconoscimento del comando di interruzione di linea "<br/>"
   if ( vCode[nInd] == '<'  &&  ( nInd + 4) < int( vCode.size())  &&
        vCode[nInd+1] == 'b'  &&  vCode[nInd+2] == 'r'  &&
        vCode[nInd+3] == '/'  && vCode[nInd+4] == '>') {
      nLen = 4 ;
      return true ;
   } 
    
   return false ;
}

//----------------------------------------------------------------------------
Vector3d
GetTextInsertPointMove( double dMaxW, double dAscent, double dMinH, int nInsPos)
{
   switch ( nInsPos) {
   case ETXT_IPTL :
      return Vector3d( 0, - dAscent, 0) ;
   case ETXT_IPTC :
      return Vector3d( - 0.5 * dMaxW, - dAscent, 0) ;
   case ETXT_IPTR :
      return Vector3d( - dMaxW, - dAscent, 0) ;
   case ETXT_IPML :
      return Vector3d( 0, - 0.5 * ( dMinH + dAscent), 0) ;
   case ETXT_IPMC :
      return Vector3d( - 0.5 * dMaxW, - 0.5 * ( dMinH + dAscent), 0) ;
   case ETXT_IPMR :
      return Vector3d( - dMaxW, - 0.5 * ( dMinH + dAscent), 0) ;
   default :
   case ETXT_IPBL :
      return Vector3d( 0, - dMinH, 0) ;
   case ETXT_IPBC :
      return Vector3d( - 0.5 * dMaxW, - dMinH, 0) ;
   case ETXT_IPBR :
      return Vector3d( - dMaxW, - dMinH, 0) ;
   }
}