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/*
* gltt graphics library
* Copyright (C) 1998 Stephane Rehel
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "FTFace.h"
#include "FTEngine.h"
#include "freetype.h"
/////////////////////////////////////////////////////////////////////////////
FTFace::FTFace( FTEngine* _engine /* = 0 */ )
{
if( _engine == 0 )
engine= FTEngine::getStaticEngine();
else
engine= _engine;
face= 0;
CP_table= 0;
for( int i= 0; i < 256; ++i )
indices[i]= 0;
}
/////////////////////////////////////////////////////////////////////////////
FTFace::~FTFace()
{
if( face != 0 )
{
TT_Close_Face(*face);
delete face;
face= 0;
}
engine= 0;
}
/////////////////////////////////////////////////////////////////////////////
GLTTboolean FTFace::open( const char* filename )
{
if( face != 0 )
return GLTT_FALSE; // already open?!
if( engine == 0 )
return GLTT_FALSE;
if( engine->getEngine() == 0 )
return GLTT_FALSE;
face= new TT_Face;
if( TT_Open_Face( *(engine->getEngine()), filename, face ) )
{
delete face;
face= 0;
return GLTT_FALSE;
}
return makeIndicesTable();
}
/////////////////////////////////////////////////////////////////////////////
int FTFace::CP_Translate( int code ) const
{
if( CP_table == 0 )
return code;
return CP_table[code];
}
/////////////////////////////////////////////////////////////////////////////
GLTTboolean FTFace::makeIndicesTable()
{
if( face == 0 )
return GLTT_FALSE;
// First, look for a Unicode charmap
TT_CharMap char_map;
int n= TT_Get_CharMap_Count(*face);
int i;
for( i= 0; i < n; ++i )
{
short unsigned platform= 0;
short unsigned encoding= 0;
TT_Get_CharMap_ID( *face, i, &platform, &encoding );
if ( (platform == 3 && encoding == 1 ) ||
(platform == 0 && encoding == 0 ) )
{
TT_Get_CharMap( *face, i, &char_map );
break;
}
}
if( i == n )
{
TT_Face_Properties properties;
TT_Get_Face_Properties( *face, &properties );
int num_glyphs= properties.num_Glyphs;
for( int ascii_code= 0; ascii_code < 256; ++ascii_code )
{
// int glyph_index= ascii_code - int(' ') + 1;
int glyph_index= TT_Char_Index( char_map, CP_Translate(ascii_code) );
if( glyph_index < 0 || glyph_index >= num_glyphs )
glyph_index= 0;
indices[ascii_code]= glyph_index;
}
}
else
{
for( int ascii_code= 0; ascii_code < 256; ++ascii_code )
{
int glyph_index= TT_Char_Index( char_map, ascii_code );
if( glyph_index < 0 )
glyph_index = 0; // FIXME! default code
indices[ascii_code]= glyph_index;
}
}
return GLTT_TRUE;
}
/////////////////////////////////////////////////////////////////////////////
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