public MediaRenditionInfo Scale(float scale)
{
var a = MediaTransformation.ParsePath(path);
var b = new MediaTransformation(a.Source, a.Format);
foreach (var transform in a.GetTransforms())
{
if (transform is Resize)
{
var resize = (Resize)transform;
b.Transform(new Resize(resize.Size.Scale(scale)));
}
else if (transform is AnchoredResize)
{
var resize = (AnchoredResize)transform;
b.Transform(new AnchoredResize(resize.Size.Scale(scale), resize.Anchor));
}
else if (transform is Crop)
{
var crop = (Crop)transform;
b.Transform(new Crop(crop.Rectangle.Scale(scale)));
}
else
{
b.Transform(transform);
}
}
return new MediaRenditionInfo(b.Width, b.Height, b.GetPath());
}
public static MediaTransformation ParsePath(string path)
{
// 100/transform/transform.format
var lastDotIndex = path.LastIndexOf('.');
var format = (lastDotIndex > 0) ? path.Substring(lastDotIndex + 1) : null;
if (lastDotIndex > 0)
{
path = path.Substring(0, lastDotIndex);
}
var parts = path.TrimStart('/').Split('/');
int i = 1;
string id = "";
var transforms = new List<ITransform>();
foreach (var part in parts)
{
if (i == 1)
{
id = part;
}
else
{
ITransform transform;
if (char.IsDigit(part[0]))
{
if (part.Contains("-"))
{
transform = AnchoredResize.Parse(part);
}
else if (part.Contains(":"))
{
// 1:00
var time = TimeSpan.Parse(part);
transform = new Clip(time, time);
}
else
{
transform = Media.Resize.Parse(part);
}
}
else
{
var transformName = part.Split('(', ':')[0];
switch (transformName)
{
case "crop" : transform = Media.Crop.Parse(part); break;
case "rotate" : transform = Media.Rotate.Parse(part); break;
case "flip" : transform = Flip.Parse(part); break;
default : transform = Media.ApplyFilter.Parse(part); break;
}
}
transforms.Add(transform);
}
i++;
}
var rendition = new MediaTransformation(new MediaSource(id), format);
foreach (var t in transforms)
{
rendition.Transform(t);
}
return rendition;
}