Modest/source/myfont/vhea.c
2017-03-03 09:20:23 +03:00

61 lines
2.2 KiB
C

/*
Copyright (C) 2016 Alexander Borisov
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Author: lex.borisov@gmail.com (Alexander Borisov)
*/
#include "myfont/vhea.h"
mystatus_t myfont_load_table_vhea(myfont_font_t *mf)
{
memset(&mf->table_vhea, 0, sizeof(myfont_table_vhea_t));
if(mf->cache.tables_offset[MyFONT_TKEY_vhea] == 0)
return MyFONT_STATUS_OK;
myfont_table_vhea_t *tvhea = &mf->table_vhea;
const uint32_t table_offset = mf->cache.tables_offset[MyFONT_TKEY_vhea];
if((table_offset + 4 + 32) > mf->file_size)
return MyFONT_STATUS_ERROR_TABLE_UNEXPECTED_ENDING;
/* get current data */
uint8_t *data = &mf->file_data[table_offset];
tvhea->version = myfont_read_u32_as_net(&data);
tvhea->Ascender = myfont_read_16(&data);
tvhea->Descender = myfont_read_16(&data);
tvhea->LineGap = myfont_read_16(&data);
tvhea->advanceHeightMax = myfont_read_16(&data);
tvhea->minTopSideBearing = myfont_read_16(&data);
tvhea->minBottomSideBearing = myfont_read_16(&data);
tvhea->yMaxExtent = myfont_read_16(&data);
tvhea->caretSlopeRise = myfont_read_16(&data);
tvhea->caretSlopeRun = myfont_read_16(&data);
tvhea->caretOffset = myfont_read_16(&data);
tvhea->reserved1 = myfont_read_16(&data);
tvhea->reserved2 = myfont_read_16(&data);
tvhea->reserved3 = myfont_read_16(&data);
tvhea->reserved4 = myfont_read_16(&data);
tvhea->metricDataFormat = myfont_read_16(&data);
tvhea->numOfLongVerMetrics = myfont_read_u16(&data);
return MyFONT_STATUS_OK;
}