private static IImageEncoder GetEncoder(TemplateConfig.Template template, TemplateConfig config)
{
switch ((template.Format ?? config.TemplateDefaults.Format).ToUpperInvariant())
{
case "JPG":
case "JPEG":
return(new JpegEncoder()
{
IgnoreMetadata = true,
Quality = template.Quality ?? config.TemplateDefaults.Quality ?? 90
});
case "PNG":
return(new PngEncoder());
case "BMP":
return(new BmpEncoder());
case "GIF":
var gifQuantizer = template.GifQuantizer ?? config.TemplateDefaults.GifQuantizer;
var paletteSize = template.GifPaletteSize ?? config.TemplateDefaults.GifPaletteSize ?? 0;
var quantizer = CreateQuantizerFromString(gifQuantizer, paletteSize);
return(new GifEncoder()
{
IgnoreMetadata = true,
Quantizer = quantizer,
});
default:
throw new ArgumentOutOfRangeException("format");
}
}
public string GetImagePath(TemplateConfig.Template template)
{
if (template == null)
{
throw new ArgumentNullException(nameof(template));
}
return(Path.Combine(_env.ContentRootPath, _options.Value.ImageDirectory, template.File));
}
public string GetFontPath(TemplateConfig.Template template, TemplateConfig config)
{
if (template == null)
{
throw new ArgumentNullException(nameof(template));
}
if (config == null)
{
throw new ArgumentNullException(nameof(config));
}
return(Path.Combine(_env.ContentRootPath, _options.Value.FontDirectory, template.Font ?? config.TemplateDefaults.Font));
}
private static string GetMimeType(TemplateConfig.Template template, TemplateConfig config)
{
switch ((template.Format ?? config.TemplateDefaults.Format).ToUpperInvariant())
{
case "JPG":
case "JPEG":
return("image/jpeg");
case "PNG":
return("image/png");
case "BMP":
return("image/bmp");
case "GIF":
return("image/gif");
default:
throw new ArgumentOutOfRangeException("format");
}
}
public async Task <string> GetImageUrl(string message, TemplateConfig.Template template)
{
if (message == null)
{
throw new ArgumentNullException(nameof(message));
}
if (template == null)
{
throw new ArgumentNullException(nameof(template));
}
var config = await _configService.GetConfig();
var boxes = template.Boxes ?? config.TemplateDefaults.Boxes;
var textLines = _textSplitter.SplitText(message.ToUpper(), boxes.Count);
var imageModel = new ImageModel
{
ImageId = template.Id,
Boxes = boxes.SelectWithIndex((box, i) => new TextBox
{
Text = textLines[i],
X = box.X,
Y = box.Y,
Width = box.Width,
Height = box.Height,
Vertical = box.Vertical,
Horizontal = box.Horizontal,
LineColor = box.LineColor,
FillColor = box.FillColor,
}).ToList()
};
var imageRequest = CreateRequest(imageModel);
var imageUrl = _urlHelper.AbsoluteAction("Get", "Image", imageRequest);
return(imageUrl);
}