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));
}
public override void GetGlyphPos(char[] buffer, int start, int len, ProperGlyph[] properGlyphs)
{
unsafe
{
fixed(ProperGlyph *propGlyphH = &properGlyphs[0])
fixed(char *head = &buffer[0])
{
NativeMyFontsLib.MyFtShaping(
this.NativeFontFace.HBFont,
head,
buffer.Length,
propGlyphH);
}
}
}
internal FontGlyph ReloadGlyphFromChar(char unicodeChar, int pixelSize)
{
if (currentFacePixelSize != pixelSize)
{
currentFacePixelSize = pixelSize;
NativeMyFontsLib.MyFtSetPixelSizes(this.ftFaceHandle, pixelSize);
}
//--------------------------------------------------
unsafe
{
ExportGlyph exportTypeFace = new ExportGlyph();
NativeMyFontsLib.MyFtLoadChar(ftFaceHandle, unicodeChar, ref exportTypeFace);
FontGlyph fontGlyph = new FontGlyph();
BuildGlyph(fontGlyph, &exportTypeFace, pixelSize);
return(fontGlyph);
}
}
protected override void OnDispose()
{
if (this.ftFaceHandle != IntPtr.Zero)
{
NativeMyFontsLib.MyFtDoneFace(this.ftFaceHandle);
ftFaceHandle = IntPtr.Zero;
}
if (unmanagedMem != IntPtr.Zero)
{
Marshal.FreeHGlobal(unmanagedMem);
unmanagedMem = IntPtr.Zero;
}
if (fonts != null)
{
fonts.Clear();
fonts = null;
}
}
internal Font GetFontAtPixelSize(int pixelSize)
{
Font found;
if (!fonts.TryGetValue(pixelSize, out found))
{
//----------------------------------
//set current fontface size
currentFacePixelSize = pixelSize;
NativeMyFontsLib.MyFtSetPixelSizes(this.ftFaceHandle, pixelSize);
//create font size
NativeFont f = new NativeFont(this, pixelSize);
fonts.Add(pixelSize, f);
//------------------------------------
return(f);
}
return(found);
}
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;
}
static NativeMyFontsLib()
{
//dynamic load dll
string appBaseDir = AppDomain.CurrentDomain.BaseDirectory;
LoadLib(appBaseDir + "\\" + myfontLib);
//---------------
//init library
int initResult = 0;
lock (syncObj)
{
if (!isInitLib)
{
initResult = NativeMyFontsLib.MyFtInitLib();
isInitLib = true;
}
}
//---------------
nativeModuleHolder = new NativeModuleHolder();
}
public void Dispose()
{
NativeMyFontsLib.MyFtShutdownLib();
}