"Fossies" - the Fresh Open Source Software archive

Member "xfstt-1.9/libfstt/table_hmtx.cc" of archive xfstt-1.9.tar.gz:

/*
 * Horizontal Device Metrics Table
 *
 * Copyright © 1997-1998 Herbert Duerr
 *
 * 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 Softaware
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 * 
 */

#include "ttf.h"

HmtxTable::HmtxTable(RandomAccessFile &f, int offset, int length):
	RandomAccessFile(f, offset, length)
{
	nHMetrics = length >> 2;	// correct value is in HheaTable !
}

void
HmtxTable::getHMetrics(int glyphNo, int *advWidth, int *lsdBear)
{
	if (glyphNo >= nHMetrics) {
		seekAbsolute((nHMetrics - 1) << 2);
		*advWidth = readUShort();
		seekRelative((glyphNo - (nHMetrics - 1)) << 1);
	} else {
		seekAbsolute(glyphNo << 2);
		*advWidth = readUShort();
	}
	*lsdBear = readSShort();
	debug("hmtx(%d) = {%d, %d}\n", glyphNo, *advWidth, *lsdBear);
}