feat: Overhaul font format into CrossPoint font

lib/CrossPointFont/CrossPointFont.h

@@ -0,0 +1,31 @@
+#pragma once
+
+#include <cstdint>
+
+#include "CrossPointFontFormat.h"
+#include "Group5/Group5.h"
+
+class CrossPointFont {
+ public:
+  enum Style : uint8_t { REGULAR = 0, BOLD = 1, ITALIC = 2, BOLD_ITALIC = 3 };
+
+  CrossPointFontData data;
+  explicit CrossPointFont(void* rawData) {
+    data.header = *static_cast<CrossPointFontHeader*>(rawData);
+    data.intervals = (CrossPointFontUnicodeInterval*)(static_cast<uint8_t*>(rawData) + sizeof(CrossPointFontHeader));
+    data.glyphs = (CrossPointFontGlyph*)((uint8_t*)data.intervals +
+                                         sizeof(CrossPointFontUnicodeInterval) * data.header.intervalCount);
+    data.bitmap = (uint8_t*)data.glyphs + sizeof(CrossPointFontGlyph) * data.header.glyphCount;
+  }
+
+  ~CrossPointFont() = default;
+  void getTextDimensions(const char* string, Style style, int* w, int* h) const;
+  const CrossPointFontGlyph* getGlyph(uint32_t cp, Style style) const;
+
+ private:
+  void getTextBounds(const char* string, Style style, int startX, int startY, int* minX, int* minY, int* maxX,
+                     int* maxY) const;
+  uint8_t styleGroup(Style style) const;
+};
+
+// TODO: CrossPointFontSmall