/// <summary> /// get from cache or create a new one /// </summary> /// <param name="reqFont"></param> /// <returns></returns> public SimpleFontAtlas GetFontAtlas(RequestFont reqFont, out GLBitmap glBmp) { #if DEBUG _dbugStopWatch.Reset(); _dbugStopWatch.Start(); #endif int fontKey = reqFont.FontKey; SimpleFontAtlas fontAtlas; if (!_createdAtlases.TryGetValue(fontKey, out fontAtlas)) { //check from pre-built cache (if availiable) Typeface resolvedTypeface = textServices.ResolveTypeface(reqFont); string fontTextureFile = reqFont.Name + " " + fontKey; string resolveFontFile = fontTextureFile + ".info"; string fontTextureInfoFile = resolveFontFile; string fontTextureImg = fontTextureInfoFile + ".png"; if (StorageService.Provider.DataExists(fontTextureInfoFile)) { SimpleFontAtlasBuilder atlasBuilder2 = new SimpleFontAtlasBuilder(); using (System.IO.Stream dataStream = StorageService.Provider.ReadDataStream(fontTextureInfoFile)) { try { fontAtlas = atlasBuilder2.LoadAtlasInfo(dataStream); fontAtlas.TotalGlyph = ReadGlyphImages(fontTextureImg); fontAtlas.OriginalFontSizePts = reqFont.SizeInPoints; _createdAtlases.Add(fontKey, fontAtlas); // //calculate some commonly used values fontAtlas.SetTextureScaleInfo( resolvedTypeface.CalculateScaleToPixelFromPointSize(fontAtlas.OriginalFontSizePts), resolvedTypeface.CalculateScaleToPixelFromPointSize(reqFont.SizeInPoints)); //TODO: review here, use scaled or unscaled values fontAtlas.SetCommonFontMetricValues( resolvedTypeface.Ascender, resolvedTypeface.Descender, resolvedTypeface.LineGap, resolvedTypeface.CalculateRecommendLineSpacing()); } catch (Exception ex) { throw ex; } } } else { GlyphImage totalGlyphsImg = null; SimpleFontAtlasBuilder atlasBuilder = null; var textureGen = new GlyphTextureBitmapGenerator(); textureGen.CreateTextureFontFromScriptLangs( resolvedTypeface, reqFont.SizeInPoints, _textureKind, _textureBuildDetails, (glyphIndex, glyphImage, outputAtlasBuilder) => { if (outputAtlasBuilder != null) { //finish atlasBuilder = outputAtlasBuilder; } } ); // totalGlyphsImg = atlasBuilder.BuildSingleImage(); //if (reqFont.SizeInPoints == 14 && cacheImg != null) //{ // totalGlyphsImg = cacheImg; //} //totalGlyphsImg = Sharpen(totalGlyphsImg, 1); //test shapen primary image //- // //create atlas fontAtlas = atlasBuilder.CreateSimpleFontAtlas(); fontAtlas.TotalGlyph = totalGlyphsImg; #if DEBUG //save glyph image for debug //PixelFarm.Agg.ActualImage.SaveImgBufferToPngFile( // totalGlyphsImg.GetImageBuffer(), // totalGlyphsImg.Width * 4, // totalGlyphsImg.Width, totalGlyphsImg.Height, // "d:\\WImageTest\\total_" + reqFont.Name + "_" + reqFont.SizeInPoints + ".png"); ////save image to cache SaveImgBufferToFile(totalGlyphsImg, fontTextureImg); #endif //cache the atlas _createdAtlases.Add(fontKey, fontAtlas); // //calculate some commonly used values fontAtlas.SetTextureScaleInfo( resolvedTypeface.CalculateScaleToPixelFromPointSize(fontAtlas.OriginalFontSizePts), resolvedTypeface.CalculateScaleToPixelFromPointSize(reqFont.SizeInPoints)); //TODO: review here, use scaled or unscaled values fontAtlas.SetCommonFontMetricValues( resolvedTypeface.Ascender, resolvedTypeface.Descender, resolvedTypeface.LineGap, resolvedTypeface.CalculateRecommendLineSpacing()); /// #if DEBUG _dbugStopWatch.Stop(); System.Diagnostics.Debug.WriteLine("build font atlas: " + _dbugStopWatch.ElapsedMilliseconds + " ms"); #endif //save font info to cache using (System.IO.MemoryStream ms = new System.IO.MemoryStream()) { atlasBuilder.SaveAtlasInfo(ms); StorageService.Provider.SaveData(fontTextureInfoFile, ms.ToArray()); } } } glBmp = _loadedGlyphs.GetOrCreateNewOne(fontAtlas); return(fontAtlas); }