77 lines
2.1 KiB
C++
77 lines
2.1 KiB
C++
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#include "hhea.h"
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#include <arpa/inet.h>
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Hhea::Hhea(const std::string& p_tag, uint32_t p_checkSum, uint32_t p_offset, uint32_t p_length):
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Table(p_tag, p_checkSum, p_offset, p_length),
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ascent(0),
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descent(0),
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lineGap(0),
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advanceWidthMax(0),
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minLeftSideBearing(0),
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minRightSideBearing(0),
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xMaxExtent(0),
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caretSlopeRise(0),
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caretSlopeRun(0),
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caretOffset(0),
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numOfLongHorMetrics(0)
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{
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}
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Hhea::~Hhea()
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{
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}
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void Hhea::read(const std::string& path)
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{
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char * buffer;
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buffer = new char[2];
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std::ifstream file(path, std::ios::in | std::ios::binary);
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file.seekg(offset);
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file.read(buffer, 2); //version is not interesting, it is always 16.16 fixed point number equals to "1.0";
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file.read(buffer, 2); //version is not interesting, it is always 16.16 fixed point number equals to "1.0";
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file.read(buffer, 2);
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ascent = ntohs(*((int16_t*) buffer));
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file.read(buffer, 2);
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descent = ntohs(*((int16_t*) buffer));
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file.read(buffer, 2);
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lineGap = ntohs(*((int16_t*) buffer));
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file.read(buffer, 2);
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advanceWidthMax = ntohs(*((uint16_t*) buffer));
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file.read(buffer, 2);
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minLeftSideBearing = ntohs(*((int16_t*) buffer));
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file.read(buffer, 2);
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minRightSideBearing = ntohs(*((int16_t*) buffer));
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file.read(buffer, 2);
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xMaxExtent = ntohs(*((int16_t*) buffer));
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file.read(buffer, 2);
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caretSlopeRise = ntohs(*((int16_t*) buffer));
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file.read(buffer, 2);
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caretSlopeRun = ntohs(*((int16_t*) buffer));
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file.read(buffer, 2);
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caretOffset = ntohs(*((int16_t*) buffer));
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file.read(buffer, 2); //reserved empty field, supposed to be 0;
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file.read(buffer, 2); //reserved empty field, supposed to be 0;
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file.read(buffer, 2); //reserved empty field, supposed to be 0;
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file.read(buffer, 2); //reserved empty field, supposed to be 0;
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file.read(buffer, 2); //metricDataFormat, it's supposed to be 0;
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file.read(buffer, 2);
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numOfLongHorMetrics = ntohs(*((uint16_t*) buffer));
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delete[] buffer;
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file.close();
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}
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