public FreeTypeSource(byte[] data)
{
Error err;
if (_libraryHandle == IntPtr.Zero)
{
IntPtr libraryRef;
err = FTNative.FT_Init_FreeType(out libraryRef);
if (err != Error.Ok)
{
throw new FreeTypeException(err);
}
_libraryHandle = libraryRef;
}
_memoryHandle = GCHandle.Alloc(data, GCHandleType.Pinned);
IntPtr faceRef;
err = FTNative.FT_New_Memory_Face(_libraryHandle, _memoryHandle.AddrOfPinnedObject(), data.Length, 0, out faceRef);
if (err != Error.Ok)
{
throw new FreeTypeException(err);
}
_faceHandle = faceRef;
_rec = PInvokeHelper.PtrToStructure <FaceRec>(_faceHandle);
}
public void GetMetricsForSize(int fontSize, out int ascent, out int descent, out int lineHeight)
{
SetPixelSizes(0, fontSize);
var sizeRec = PInvokeHelper.PtrToStructure <SizeRec>(_rec.size);
ascent = (int)sizeRec.metrics.ascender >> 6;
descent = (int)sizeRec.metrics.descender >> 6;
lineHeight = (int)sizeRec.metrics.height >> 6;
}
private void GetCurrentGlyph(out GlyphSlotRec glyph)
{
glyph = PInvokeHelper.PtrToStructure <GlyphSlotRec>(_rec.glyph);
}