initial commit

lib/fontParser/tables/hmtx.cpp

@@ -0,0 +1,59 @@
+#include "hmtx.h"
+#include <arpa/inet.h>
+
+Hmtx::Hmtx(const std::string& p_tag, uint32_t p_checkSum, uint32_t p_offset, uint32_t p_length):
+    Table(p_tag, p_checkSum, p_offset, p_length),
+    numOfLongHorMetrics(0),
+    longHorMetric(0)
+{
+}
+
+Hmtx::~Hmtx()
+{
+    delete longHorMetric;
+}
+
+void Hmtx::read(const std::string& path)
+{
+    if (numOfLongHorMetrics == 0) {
+        throw 1;
+    }
+    
+    std::ifstream file(path, std::ios::in | std::ios::binary);
+    file.seekg(offset);
+    
+    char * buffer;
+    buffer = new char[2];
+    
+    longHorMetric = new std::vector<HMetric>(numOfLongHorMetrics);
+    
+    for (int i = 0; i < numOfLongHorMetrics; ++i) {
+        HMetric& met = longHorMetric->at(i);
+        
+        file.read(buffer, 2);
+        uint16_t aw = ntohs(*((uint16_t*) buffer));
+        
+        file.read(buffer, 2);
+        int16_t lsb = ntohs(*((int16_t*) buffer));
+        
+        met.advanceWidth = aw;
+        met.leftSideBearing = lsb;
+    }
+    file.close();
+    delete[] buffer;
+}
+
+Hmtx::HMetric::HMetric():
+    advanceWidth(0),
+    leftSideBearing(0)
+{
+}
+
+Hmtx::HMetric Hmtx::getMetric(uint16_t cid) const
+{
+    if (cid >= longHorMetric->size()) {
+        cid = longHorMetric->size() - 1;
+    }
+    
+    return longHorMetric->at(cid);
+}