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/* |
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Copyright (C) 2016-2017 Alexander Borisov |
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This library is free software; you can redistribute it and/or |
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modify it under the terms of the GNU Lesser General Public |
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License as published by the Free Software Foundation; either |
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version 2.1 of the License, or (at your option) any later version. |
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This library is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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Lesser General Public License for more details. |
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You should have received a copy of the GNU Lesser General Public |
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License along with this library; if not, write to the Free Software |
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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Author: lex.borisov@gmail.com (Alexander Borisov) |
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*/ |
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#include "myfont/hmtx.h" |
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0
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mystatus_t myfont_load_table_hmtx(myfont_font_t* mf, uint8_t* font_data, size_t data_size) |
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{ |
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0
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memset(&mf->table_hmtx, 0, sizeof(myfont_table_hmtx_t)); |
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0
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0
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if(mf->cache.tables_offset[MyFONT_TKEY_hmtx] == 0) |
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0
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return MyFONT_STATUS_OK; |
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myfont_table_hmtx_t *thmtx = &mf->table_hmtx; |
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const uint32_t table_offset = mf->cache.tables_offset[MyFONT_TKEY_hmtx]; |
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/* get current data */ |
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0
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uint8_t *data = &font_data[table_offset]; |
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uint16_t num_metrics = mf->table_hhea.numberOfHMetrics; |
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0
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0
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if(num_metrics == 0) |
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0
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return MyFONT_STATUS_OK; |
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0
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0
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if(data_size < (table_offset + (num_metrics * 2))) |
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0
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return MyFONT_STATUS_ERROR_TABLE_UNEXPECTED_ENDING; |
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myfont_long_hor_metric_t *lhor_metric = (myfont_long_hor_metric_t *)myfont_calloc(mf, num_metrics, sizeof(myfont_long_hor_metric_t)); |
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0
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if(lhor_metric == NULL) |
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0
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return MyFONT_STATUS_ERROR_MEMORY_ALLOCATION; |
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0
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0
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for(uint16_t i = 0; i < num_metrics; i++) { |
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lhor_metric[i].advanceWidth = myfont_read_u16(&data); |
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lhor_metric[i].lsb = myfont_read_16(&data); |
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} |
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0
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thmtx->hMetrics = lhor_metric; |
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0
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thmtx->leftSideBearing = NULL; |
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0
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return MyFONT_STATUS_OK; |
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} |
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