public Task <FontFamily> GetFont(CancellationToken cancellationToken)
{
if (_fontCollection.TryFind(_fontName, out var fontFamily))
{
return(Task.FromResult(fontFamily));
}
throw new Exception($"Font {_fontName} not found.");
}
/// <inheritdoc />
public async Task <StubResponseWriterResultModel> WriteToResponseAsync(StubModel stub, ResponseModel response)
{
var imgDefinition = stub.Response?.Image;
if (imgDefinition == null || imgDefinition.Type == ResponseImageType.NotSet)
{
return(StubResponseWriterResultModel.IsNotExecuted(GetType().Name));
}
var stubImage = stub.Response.Image;
response.Headers.AddOrReplaceCaseInsensitive("Content-Type", stubImage.ContentTypeHeaderValue);
var cacheFilePath = Path.Combine(_fileService.GetTempPath(), $"{stubImage.Hash}.bin");
byte[] bytes;
if (_fileService.FileExists(cacheFilePath))
{
bytes = _fileService.ReadAllBytes(cacheFilePath);
}
else
{
var collection = new FontCollection();
collection.Install(Path.Combine(_assemblyService.GetExecutingAssemblyRootPath(),
"Manrope-Regular.ttf"));
const string fontFamilyName = "Manrope";
if (!collection.TryFind(fontFamilyName, out var family))
{
throw new RequestValidationException($"Font family '{fontFamilyName}' not found!");
}
using var image = new Image <Rgba32>(stubImage.Width, stubImage.Height);
var font = new Font(family, stubImage.FontSize);
var parsedColor = Color.ParseHex(stubImage.BackgroundColor);
var polygon = new Rectangle(0, 0, stubImage.Width, stubImage.Height);
var fontColor = !string.IsNullOrWhiteSpace(stubImage.FontColor)
? Color.ParseHex(stubImage.FontColor)
: parsedColor.InvertColor();
image.Mutate(i =>
i
.Fill(parsedColor, polygon)
.ApplyScalingWaterMark(font, stubImage.Text, fontColor, 5, stubImage.WordWrap));
using var ms = new MemoryStream();
switch (stubImage.Type)
{
case ResponseImageType.Bmp:
await image.SaveAsBmpAsync(ms);
break;
case ResponseImageType.Gif:
await image.SaveAsGifAsync(ms);
break;
case ResponseImageType.Jpeg:
await image.SaveAsJpegAsync(ms, new JpegEncoder { Quality = stubImage.JpegQuality });
break;
default:
await image.SaveAsPngAsync(ms);
break;
}
bytes = ms.ToArray();
_fileService.WriteAllBytes(cacheFilePath, bytes);
}
response.Body = bytes;
return(StubResponseWriterResultModel.IsExecuted(GetType().Name));
}
