/// <summary>
/// Initializes a new instance of the ThumbnailCreator class.
/// </summary>
/// <param name="outputFormat">Image format for thumbnail.</param>
/// <param name="outputQuality">Image quality for thumbnail.</param>
public ThumbnailCreator(OutputFormat outputFormat, OutputQuality outputQuality)
{
this.Init(outputFormat, outputQuality);
}
/// <summary>
/// Initializes private fields.
/// </summary>
/// <param name="outputFormat">Image format for thumbnail.</param>
/// <param name="outputQuality">Image quality for thumbnail.</param>
private void Init(OutputFormat outputFormat = OutputFormat.Png, OutputQuality outputQuality = OutputQuality.Normal)
{
switch (outputFormat) {
case OutputFormat.Jpg:
_outputFileExtension = SupportedExtensions.JPG;
_bitmapEncoder = new JpegBitmapEncoder();
break;
case OutputFormat.Png:
_outputFileExtension = SupportedExtensions.PNG;
_bitmapEncoder = new PngBitmapEncoder();
break;
case OutputFormat.Gif:
_outputFileExtension = SupportedExtensions.GIF;
_bitmapEncoder = new GifBitmapEncoder();
break;
default:
_outputFileExtension = Extensions.PNG;
_bitmapEncoder = new PngBitmapEncoder();
break;
}
_imageQualityRatio = 1.0;
switch (outputQuality) {
case OutputQuality.Low:
_imageQualityRatio /= 2.0;
break;
case OutputQuality.Good:
_imageQualityRatio *= 2.0;
break;
case OutputQuality.Super:
_imageQualityRatio *= 3.0;
break;
default:
_imageQualityRatio *= 1.0;
break;
}
}
