/****************************************************************************
** $Id: qt/qtextengine_mac.cpp   3.3.1   edited May 27 2003 $
**
** Text engine classes
**
** Copyright (C) 2003 Trolltech AS.  All rights reserved.
**
** This file is part of the kernel module of the Qt GUI Toolkit.
**
** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
** licenses for Macintosh may use this file in accordance with the Qt Commercial
** License Agreement provided with the Software.
**
** This file is not available for use under any other license without
** express written permission from the copyright holder.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
**   information about Qt Commercial License Agreements.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/


QScriptItemArray::~QScriptItemArray()
{
    clear();
    free( d );
}

void QScriptItemArray::clear()
{
    if ( d ) {
	for ( unsigned int i = 0; i < d->size; i++ ) {
	    QScriptItem &si = d->items[i];
	    if ( si.fontEngine )
		si.fontEngine->deref();
	}
	d->size = 0;
    }
}

void QScriptItemArray::resize( int s )
{
    int alloc = (s + 8) >> 3 << 3;
    d = (QScriptItemArrayPrivate *)realloc( d, sizeof( QScriptItemArrayPrivate ) +
		 sizeof( QScriptItem ) * alloc );
    d->alloc = alloc;
}

void QTextEngine::shape( int item ) const
{
    QScriptItem &si = items[item];

    if ( si.num_glyphs )
	return;

    QFont::Script script = (QFont::Script)si.analysis.script;
    int from = si.position;
    int len = length( item );

    si.glyph_data_offset = used;

    if ( !si.fontEngine )
	si.fontEngine = fnt->engineForScript( script );
    si.fontEngine->ref();

    si.ascent = si.fontEngine->ascent();
    si.descent = si.fontEngine->descent();

    if ( si.fontEngine && si.fontEngine != (QFontEngine*)-1 ) {
	assert( script < QFont::NScripts );
	scriptEngines[script].shape( script, string, from, len, (QTextEngine *)this, &si );
    }
    ((QTextEngine *)this)->used += si.num_glyphs;

    si.width = 0;
    advance_t *advances = this->advances( &si );
    for ( int i = 0; i < si.num_glyphs; i++ )
	si.width += advances[i];

    return;
}

