[occt.git] / src / Aspect / Aspect_Convert.hxx

#ifndef _Aspect_Convert_HeaderFile
#define _Aspect_Convert_HeaderFile

#include <Standard.hxx>
#include <Quantity_Parameter.hxx>

//! Auxiliary functions for DCU <-> Pixels conversions.
namespace Aspect_Convert
{

  inline Standard_Integer Round (Standard_Real theValue)
  {
    return Standard_Integer(theValue + (theValue >= 0 ? 0.5 : -0.5 ));
  }

  inline void ConvertCoordinates (const Standard_Integer theParentPxSizeX, const Standard_Integer theParentPxSizeY,
                                  const Quantity_Parameter theQCenterX, const Quantity_Parameter theQCenterY,
                                  const Quantity_Parameter theQSizeX,   const Quantity_Parameter theQSizeY,
                                  Standard_Integer& thePxLeft,  Standard_Integer& thePxTop,
                                  Standard_Integer& thePxSizeX, Standard_Integer& thePxSizeY)
  {
    Quantity_Parameter theParentSizeMin = Min (theParentPxSizeX, theParentPxSizeY);
    thePxSizeX = Round (theQSizeX * theParentSizeMin);
    thePxSizeY = Round (theQSizeY * theParentSizeMin);
    Standard_Integer thePxCenterX = Round(theQCenterX * Quantity_Parameter (theParentPxSizeX));
    Standard_Integer thePxCenterY = Round((1.0 - theQCenterY) * Quantity_Parameter (theParentPxSizeY));
    thePxLeft = thePxCenterX - thePxSizeX / 2;
    thePxTop  = thePxCenterY - thePxSizeY / 2;
  }

  inline void ConvertCoordinates (const Standard_Integer theParentPxSizeX, const Standard_Integer theParentPxSizeY,
                                  const Standard_Integer thePxLeft,  const Standard_Integer thePxTop,
                                  const Standard_Integer thePxSizeX, const Standard_Integer thePxSizeY,
                                  Quantity_Parameter& theQCenterX, Quantity_Parameter& theQCenterY,
                                  Quantity_Parameter& theQSizeX,   Quantity_Parameter& theQSizeY)
  {
    Quantity_Parameter theParentSizeMin = Min (theParentPxSizeX, theParentPxSizeY);
    theQSizeX = Quantity_Parameter(thePxSizeX) / theParentSizeMin;
    theQSizeY = Quantity_Parameter(thePxSizeY) / theParentSizeMin;
    Standard_Integer thePxCenterX = thePxLeft + thePxSizeX / 2;
    Standard_Integer thePxCenterY = thePxTop  + thePxSizeY / 2;
    theQCenterX =       Quantity_Parameter (thePxCenterX) / Quantity_Parameter (theParentPxSizeX);
    theQCenterY = 1.0 - Quantity_Parameter (thePxCenterY) / Quantity_Parameter (theParentPxSizeY);
  }

  inline void FitIn (const Standard_Integer theParentPxSizeX, const Standard_Integer theParentPxSizeY,
                     Standard_Integer& thePxLeft,  Standard_Integer& thePxTop,
                     Standard_Integer& thePxSizeX, Standard_Integer& thePxSizeY)
  {
    if (thePxLeft < 0)
    {
      //thePxSizeX -= 2 * thePxLeft;
      thePxLeft = 0;
    }
    if ((thePxLeft + thePxSizeX) > theParentPxSizeX)
    {
      thePxSizeX = theParentPxSizeX - thePxLeft;
    }

    if (thePxTop < 0)
    {
      //thePxSizeY -= 2 * thePxTop;
      thePxTop = 0;
    }
    if ((thePxTop + thePxSizeY) > theParentPxSizeY)
    {
      thePxSizeY = theParentPxSizeY - thePxTop;
    }
  }

};

#endif /* _Aspect_Convert_HeaderFile */
Commit	Line	Data
7fd59977	1	#ifndef _Aspect_Convert_HeaderFile
	2	#define _Aspect_Convert_HeaderFile
	3
	4	#include <Standard.hxx>
	5	#include <Quantity_Parameter.hxx>
	6
	7	//! Auxiliary functions for DCU <-> Pixels conversions.
	8	namespace Aspect_Convert
	9	{
	10
	11	inline Standard_Integer Round (Standard_Real theValue)
	12	{
	13	return Standard_Integer(theValue + (theValue >= 0 ? 0.5 : -0.5 ));
	14	}
	15
	16	inline void ConvertCoordinates (const Standard_Integer theParentPxSizeX, const Standard_Integer theParentPxSizeY,
	17	const Quantity_Parameter theQCenterX, const Quantity_Parameter theQCenterY,
	18	const Quantity_Parameter theQSizeX, const Quantity_Parameter theQSizeY,
	19	Standard_Integer& thePxLeft, Standard_Integer& thePxTop,
	20	Standard_Integer& thePxSizeX, Standard_Integer& thePxSizeY)
	21	{
	22	Quantity_Parameter theParentSizeMin = Min (theParentPxSizeX, theParentPxSizeY);
	23	thePxSizeX = Round (theQSizeX * theParentSizeMin);
	24	thePxSizeY = Round (theQSizeY * theParentSizeMin);
	25	Standard_Integer thePxCenterX = Round(theQCenterX * Quantity_Parameter (theParentPxSizeX));
	26	Standard_Integer thePxCenterY = Round((1.0 - theQCenterY) * Quantity_Parameter (theParentPxSizeY));
	27	thePxLeft = thePxCenterX - thePxSizeX / 2;
	28	thePxTop = thePxCenterY - thePxSizeY / 2;
	29	}
	30
	31	inline void ConvertCoordinates (const Standard_Integer theParentPxSizeX, const Standard_Integer theParentPxSizeY,
	32	const Standard_Integer thePxLeft, const Standard_Integer thePxTop,
	33	const Standard_Integer thePxSizeX, const Standard_Integer thePxSizeY,
	34	Quantity_Parameter& theQCenterX, Quantity_Parameter& theQCenterY,
	35	Quantity_Parameter& theQSizeX, Quantity_Parameter& theQSizeY)
	36	{
	37	Quantity_Parameter theParentSizeMin = Min (theParentPxSizeX, theParentPxSizeY);
	38	theQSizeX = Quantity_Parameter(thePxSizeX) / theParentSizeMin;
	39	theQSizeY = Quantity_Parameter(thePxSizeY) / theParentSizeMin;
	40	Standard_Integer thePxCenterX = thePxLeft + thePxSizeX / 2;
	41	Standard_Integer thePxCenterY = thePxTop + thePxSizeY / 2;
	42	theQCenterX = Quantity_Parameter (thePxCenterX) / Quantity_Parameter (theParentPxSizeX);
	43	theQCenterY = 1.0 - Quantity_Parameter (thePxCenterY) / Quantity_Parameter (theParentPxSizeY);
	44	}
	45
	46	inline void FitIn (const Standard_Integer theParentPxSizeX, const Standard_Integer theParentPxSizeY,
	47	Standard_Integer& thePxLeft, Standard_Integer& thePxTop,
	48	Standard_Integer& thePxSizeX, Standard_Integer& thePxSizeY)
	49	{
	50	if (thePxLeft < 0)
	51	{
	52	//thePxSizeX -= 2 * thePxLeft;
	53	thePxLeft = 0;
	54	}
	55	if ((thePxLeft + thePxSizeX) > theParentPxSizeX)
	56	{
	57	thePxSizeX = theParentPxSizeX - thePxLeft;
	58	}
	59
	60	if (thePxTop < 0)
	61	{
	62	//thePxSizeY -= 2 * thePxTop;
	63	thePxTop = 0;
	64	}
65	if ((thePxTop + thePxSizeY) > theParentPxSizeY)
66	{
67	thePxSizeY = theParentPxSizeY - thePxTop;
68	}
69	}
70
71	};
72
73	#endif /* _Aspect_Convert_HeaderFile */