public static Font LoadFont(string filename, int fontPointSize)
{
//load font from specific file
NativeFontFace fontFace;
if (!fonts.TryGetValue(filename, out fontFace))
{
//if not found
//then load it
byte[] fontFileContent = File.ReadAllBytes(filename);
int filelen = fontFileContent.Length;
IntPtr unmanagedMem = Marshal.AllocHGlobal(filelen);
Marshal.Copy(fontFileContent, 0, unmanagedMem, filelen);
//---------------------------------------------------
//convert font point size to pixel size
//---------------------------------------------------
IntPtr faceHandle = NativeMyFontsLib.MyFtNewMemoryFace(unmanagedMem, filelen);
if (faceHandle != IntPtr.Zero)
{
//ok pass
//-------------------
//test change font size
//NativeMyFontsLib.MyFtSetCharSize(faceHandle,
// 0, //char_width in 1/64th of points, value 0 => same as height
// 16 * 64,//16 pt //char_height in 1*64 of ppoints
// 96,//horizontal device resolution (eg screen resolution 96 dpi)
// 96);// vertical device resolution
//-------------------
fontFace = new NativeFontFace(unmanagedMem, faceHandle);
ExportTypeFaceInfo exportTypeInfo = new ExportTypeFaceInfo();
NativeMyFontsLib.MyFtGetFaceInfo(faceHandle, ref exportTypeInfo);
fontFace.HasKerning = exportTypeInfo.hasKerning;
//for shaping engine***
SetShapingEngine(fontFace, "th", HBDirection.HB_DIRECTION_LTR, HBScriptCode.HB_SCRIPT_THAI);
fonts.Add(filename, fontFace);
}
else
{
//load font error
Marshal.FreeHGlobal(unmanagedMem);
}
}
//-------------------------------------------------
//get font that specific size from found font face
//-------------------------------------------------
return(fontFace.GetFontAtPointSize(fontPointSize));
}
internal static void SetShapingEngine(NativeFontFace fontFace, string lang, HBDirection hb_direction, int hb_scriptcode)
{
//string lang = "en";
//PixelFarm.Font2.NativeMyFontsLib.MyFtSetupShapingEngine(ftFaceHandle,
// lang,
// lang.Length,
// HBDirection.HB_DIRECTION_LTR,
// HBScriptCode.HB_SCRIPT_LATIN);
ExportTypeFaceInfo exportTypeInfo = new ExportTypeFaceInfo();
NativeMyFontsLib.MyFtSetupShapingEngine(fontFace.Handle,
lang,
lang.Length,
hb_direction,
hb_scriptcode,
ref exportTypeInfo);
fontFace.HBFont = exportTypeInfo.hb_font;
}
internal NativeFont(NativeFontFace ownerFace, int pixelSize)
{
//store unmanage font file information
this.ownerFace = ownerFace;
this.fontSizeInPixelUnit = pixelSize;
}