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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 "GLTTBitmapFont.h"
#include "FTBitmapFont.h"
#include "FTInstance.h"
#include "FTGlyph.h"
#include "FTGlyphBitmap.h"
#ifdef WIN32
#include <windows.h>
#endif
#ifdef __CYGWIN32__
#include "CygnusGL/gl.h"
#else
#include <GL/gl.h>
#endif
/////////////////////////////////////////////////////////////////////////////
GLTTBitmapFont::GLTTBitmapFont( FTFace* _face )
{
face= _face;
instance= 0;
bitmaps= 0;
}
/////////////////////////////////////////////////////////////////////////////
GLTTBitmapFont::~GLTTBitmapFont()
{
destroy();
face= 0;
}
/////////////////////////////////////////////////////////////////////////////
void GLTTBitmapFont::destroy()
{
delete bitmaps;
bitmaps= 0;
delete instance;
instance= 0;
}
/////////////////////////////////////////////////////////////////////////////
GLTTboolean GLTTBitmapFont::create( int point_size )
{
destroy();
if( point_size < 1 )
point_size= 1;
instance= new FTInstance(face);
if( ! instance->create() )
return GLTT_FALSE;
if( ! instance->setResolutions(96,96) )
return GLTT_FALSE;
if( ! instance->setPointSize(point_size) )
return GLTT_FALSE;
bitmaps= new FTBitmapFont(instance);
if( ! bitmaps->create() )
return GLTT_FALSE;
return GLTT_TRUE;
}
/////////////////////////////////////////////////////////////////////////////
void GLTTBitmapFont::output( int x, int y, const char* text )
{
if( text == 0 || bitmaps == 0 )
return;
x *= 64;
y *= 64;
glPixelStorei(GL_UNPACK_ALIGNMENT,1);
for(;;)
{
int ch= (unsigned char)*text;
if( ch == 0 )
break;
++text;
FTGlyphBitmap* gbitmap= bitmaps->getBitmap(ch);
if( gbitmap == 0 )
continue;
if( gbitmap->getBitmap() != 0 )
{
int x_dst= (x+gbitmap->getDeltaX()) / 64;
int y_dst= (y+gbitmap->getDeltaY()) / 64;
// Let's handle the case where the bitmap origin generates an
// invalid raster pos error
// Contributed by Dirk Reiners <reiners@ecrc.de>
if( x_dst < 0 || y_dst < 0 )
{
int dummy = 0;
glRasterPos2i( 0, 0 );
glBitmap( 0, 0, 0, 0, x_dst, y_dst, (const GLubyte*)&dummy );
}
else
glRasterPos2i( x_dst, y_dst );
glBitmap( gbitmap->getBitmapWidth(),
gbitmap->getBitmapHeight(),
0., 0., // x,y orig
0., 0., // x,y move
(const GLubyte*) gbitmap->getBitmap() );
}
x += gbitmap->getAdvance();
}
}
/////////////////////////////////////////////////////////////////////////////
int GLTTBitmapFont::getWidth( const char* text )
{
if( bitmaps == 0 )
return 0;
return bitmaps->getWidth(text);
}
/////////////////////////////////////////////////////////////////////////////
int GLTTBitmapFont::getHeight() const
{
if( instance == 0 )
return 0;
return instance->getHeight();
}
/////////////////////////////////////////////////////////////////////////////
int GLTTBitmapFont::getDescender() const
{
if( instance == 0 )
return 0;
return instance->getDescender();
}
/////////////////////////////////////////////////////////////////////////////
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