/*------------------------------------------------------------------------

 *

 * OpenVG 1.1 Reference Implementation

 * -----------------------------------

 *

 * Copyright (c) 2007 The Khronos Group Inc.

 *

 * Permission is hereby granted, free of charge, to any person obtaining a

 * copy of this software and /or associated documentation files

 * (the "Materials "), to deal in the Materials without restriction,

 * including without limitation the rights to use, copy, modify, merge,

 * publish, distribute, sublicense, and/or sell copies of the Materials,

 * and to permit persons to whom the Materials are furnished to do so,

 * subject to the following conditions: 

 *

 * The above copyright notice and this permission notice shall be included 

 * in all copies or substantial portions of the Materials. 

 *

 * THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.

 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,

 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR

 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE MATERIALS OR

 * THE USE OR OTHER DEALINGS IN THE MATERIALS.

 *

 *//**

 * \file

 * \brief	Implementation of Font class.

 * \note	

 *//*-------------------------------------------------------------------*/

#include "riFont.h"

//==============================================================================================

namespace OpenVGRI

{

/*-------------------------------------------------------------------*//*!

* \brief	Font constructor.

* \param	

* \return	

* \note		

*//*-------------------------------------------------------------------*/

Font::Font(int capacityHint) :

	m_referenceCount(0),

	m_glyphs()

{

	RI_ASSERT(capacityHint >= 0);

	m_glyphs.reserve(capacityHint);

}

/*-------------------------------------------------------------------*//*!

* \brief	Font destructor.

* \param	

* \return	

* \note		

*//*-------------------------------------------------------------------*/

Font::~Font()

{

	//remove references to paths and images

	for(int i=0;i<m_glyphs.size();i++)

		clearGlyph(&m_glyphs[i]);

	RI_ASSERT(m_referenceCount == 0);

}

/*-------------------------------------------------------------------*//*!

* \brief	Find a glyph based on glyphIndex.

* \param	

* \return	

* \note		

*//*-------------------------------------------------------------------*/

Font::Glyph* Font::findGlyph(unsigned int index)

{

    for(int i=0;i<m_glyphs.size();i++)

    {

        if(m_glyphs[i].m_state != Glyph::GLYPH_UNINITIALIZED && m_glyphs[i].m_index == index)

            return &m_glyphs[i];

    }

    return NULL;

}

/*-------------------------------------------------------------------*//*!

* \brief	Find a free glyph or allocate a new one.

* \param	

* \return	

* \note		

*//*-------------------------------------------------------------------*/

Font::Glyph* Font::newGlyph()

{

    for(int i=0;i<m_glyphs.size();i++)

    {

        if(m_glyphs[i].m_state == Glyph::GLYPH_UNINITIALIZED)

            return &m_glyphs[i];

    }

    m_glyphs.resize(m_glyphs.size()+1);

    return &m_glyphs[m_glyphs.size()-1];

}

/*-------------------------------------------------------------------*//*!

* \brief	Free glyph and its data.

* \param	

* \return	

* \note		

*//*-------------------------------------------------------------------*/

void Font::clearGlyph(Glyph* g)

{

    RI_ASSERT(g);

	if(g->m_path != VG_INVALID_HANDLE)

	{

		Path* p = (Path*)g->m_path;

		if(!p->removeReference())

			RI_DELETE(p);

	}

	if(g->m_image != VG_INVALID_HANDLE)

	{

		Image* p = (Image*)g->m_image;

		p->removeInUse();

		if(!p->removeReference())

			RI_DELETE(p);

	}

	Glyph a;

	*g = a;

}

/*-------------------------------------------------------------------*//*!

* \brief	

* \param	

* \return	

* \note		

*//*-------------------------------------------------------------------*/

void Font::setGlyphToPath(unsigned int index, VGPath path, bool isHinted, const Vector2& origin, const Vector2& escapement)

{

    Glyph* g = findGlyph(index);

    if(g)

    {   //glyph exists, replace

        clearGlyph(g);

    }

    else

    {   //glyph doesn't exist, allocate a new one

        g = newGlyph();

    }

    g->m_index = index;

    g->m_state = Glyph::GLYPH_PATH;

	g->m_path = path;

    g->m_image = VG_INVALID_HANDLE;

	g->m_isHinted = isHinted;

	g->m_origin = origin;

	g->m_escapement = escapement;

    if(path != VG_INVALID_HANDLE)

    {

        Path* p = (Path*)path;

        p->addReference();

    }

}

/*-------------------------------------------------------------------*//*!

* \brief	

* \param	

* \return	

* \note		

*//*-------------------------------------------------------------------*/

void Font::setGlyphToImage(unsigned int index, VGImage image, const Vector2& origin, const Vector2& escapement)

{

    Glyph* g = findGlyph(index);

    if(g)

    {   //glyph exists, replace

        clearGlyph(g);

    }

    else

    {   //glyph doesn't exist, allocate a new one

        g = newGlyph();

    }

    g->m_index = index;

    g->m_state = Glyph::GLYPH_IMAGE;

	g->m_path = VG_INVALID_HANDLE;

    g->m_image = image;

	g->m_isHinted = false;

	g->m_origin = origin;

	g->m_escapement = escapement;

    if(image != VG_INVALID_HANDLE)

    {

        Image* p = (Image*)image;

        p->addReference();

        p->addInUse();

    }

}

//=======================================================================

}	//namespace OpenVGRI