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/*
Copyright (C) 2016-2017 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/os_2.h"
mystatus_t myfont_load_table_os_2(myfont_font_t* mf, uint8_t* font_data, size_t data_size)
{
memset(&mf->table_os_2, 0, sizeof(myfont_table_os_2_t));
if(mf->cache.tables_offset[MyFONT_TKEY_OS_2] == 0)
return MyFONT_STATUS_OK;
myfont_table_os_2_t *tos_2 = &mf->table_os_2;
const uint32_t table_offset = mf->cache.tables_offset[MyFONT_TKEY_OS_2];
/* get current data */
uint8_t *data = &font_data[table_offset];
uint32_t pos = table_offset + 32 + 10 + 16 + 4 + 16;
if(pos > data_size)
return MyFONT_STATUS_ERROR_TABLE_UNEXPECTED_ENDING;
tos_2->version = myfont_read_u16(&data);
tos_2->xAvgCharWidth = myfont_read_16(&data);
tos_2->usWeightClass = myfont_read_u16(&data);
tos_2->usWidthClass = myfont_read_u16(&data);
tos_2->fsType = myfont_read_16(&data);
tos_2->ySubscriptXSize = myfont_read_16(&data);
tos_2->ySubscriptYSize = myfont_read_16(&data);
tos_2->ySubscriptXOffset = myfont_read_16(&data);
tos_2->ySubscriptYOffset = myfont_read_16(&data);
tos_2->ySuperscriptXSize = myfont_read_16(&data);
tos_2->ySuperscriptYSize = myfont_read_16(&data);
tos_2->ySuperscriptXOffset = myfont_read_16(&data);
tos_2->ySuperscriptYOffset = myfont_read_16(&data);
tos_2->yStrikeoutSize = myfont_read_16(&data);
tos_2->yStrikeoutPosition = myfont_read_16(&data);
tos_2->sFamilyClass = myfont_read_16(&data);
memcpy(tos_2->panose, data, 10);
data += 10;
tos_2->ulUnicodeRange1 = myfont_read_u32(&data);
tos_2->ulUnicodeRange2 = myfont_read_u32(&data);
tos_2->ulUnicodeRange3 = myfont_read_u32(&data);
tos_2->ulUnicodeRange4 = myfont_read_u32(&data);
memcpy(tos_2->achVendID, data, 4);
data += 4;
tos_2->fsSelection = myfont_read_u16(&data);
tos_2->usFirstCharIndex = myfont_read_u16(&data);
tos_2->usLastCharIndex = myfont_read_u16(&data);
tos_2->sTypoAscender = myfont_read_16(&data);
tos_2->sTypoDescender = myfont_read_16(&data);
tos_2->sTypoLineGap = myfont_read_16(&data);
tos_2->usWinAscent = myfont_read_u16(&data);
tos_2->usWinDescent = myfont_read_u16(&data);
switch (tos_2->version) {
case 1:
pos += 8;
if(pos > data_size)
return MyFONT_STATUS_ERROR_TABLE_UNEXPECTED_ENDING;
tos_2->ulCodePageRange1 = myfont_read_u32(&data);
tos_2->ulCodePageRange2 = myfont_read_u32(&data);
break;
case 2:
case 3:
case 4:
pos += 18;
if(pos > data_size)
return MyFONT_STATUS_ERROR_TABLE_UNEXPECTED_ENDING;
tos_2->ulCodePageRange1 = myfont_read_u32(&data);
tos_2->ulCodePageRange2 = myfont_read_u32(&data);
tos_2->sxHeight = myfont_read_16(&data);
tos_2->sCapHeight = myfont_read_16(&data);
tos_2->usDefaultChar = myfont_read_u16(&data);
tos_2->usBreakChar = myfont_read_u16(&data);
tos_2->usMaxContext = myfont_read_u16(&data);
break;
case 5:
pos += 22;
if(pos > data_size)
return MyFONT_STATUS_ERROR_TABLE_UNEXPECTED_ENDING;
tos_2->ulCodePageRange1 = myfont_read_u32(&data);
tos_2->ulCodePageRange2 = myfont_read_u32(&data);
tos_2->sxHeight = myfont_read_16(&data);
tos_2->sCapHeight = myfont_read_16(&data);
tos_2->usDefaultChar = myfont_read_u16(&data);
tos_2->usBreakChar = myfont_read_u16(&data);
tos_2->usMaxContext = myfont_read_u16(&data);
tos_2->usLowerOpticalPointSize = myfont_read_u16(&data);
tos_2->usUpperOpticalPointSize = myfont_read_u16(&data);
break;
default:
break;
}
return MyFONT_STATUS_OK;
}
int8_t myfont_os_2_panose(myfont_font_t *mf, myfont_table_os_2_panose_t id)
{
return mf->table_os_2.panose[id];
}
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