public bool Convert (FilterRequest req)
{
string source = req.Current.LocalPath;
Uri dest = req.TempUri (Path.GetExtension (source));
using (ImageFile img = ImageFile.Create (source)) {
using (Pixbuf pixbuf = img.Load ()) {
using (ImageInfo info = new ImageInfo (pixbuf)) {
MemorySurface surface = new MemorySurface (Format.Argb32,
pixbuf.Width,
pixbuf.Height);
Context ctx = new Context (surface);
ctx.Matrix = info.Fill (info.Bounds, angle);
Pattern p = new SurfacePattern (info.Surface);
ctx.Source = p;
ctx.Paint ();
((IDisposable)ctx).Dispose ();
p.Destroy ();
using (Pixbuf result = CairoUtils.CreatePixbuf (surface)) {
using (Stream output = File.OpenWrite (dest.LocalPath)) {
img.Save (result, output);
}
}
surface.Flush ();
info.Dispose ();
req.Current = dest;
return true;
}
}
}
}
protected virtual void Dispose(bool disposing)
{
if (disposed)
{
return;
}
disposed = true;
if (disposing)
{
// free managed resources
if (mask != null)
{
mask.Dispose();
mask = null;
}
if (blur != null)
{
blur.Dispose();
blur = null;
}
}
// free unmanaged resources
}
public void Dispose()
{
if (mask != null)
{
mask.Destroy();
}
if (blur != null)
{
blur.Dispose();
}
}
public void Dispose()
{
if (begin_buffer != null)
{
begin_buffer.Dispose();
begin_buffer = null;
}
if (end_buffer != null)
{
end_buffer.Dispose();
end_buffer = null;
}
}
protected override void OnDestroyed()
{
if (current != null)
{
current.Dispose();
current = null;
}
if (next != null)
{
next.Dispose();
next = null;
}
Transition = null;
if (effect != null)
{
effect.Dispose();
}
base.OnDestroyed();
}
public void Dispose()
{
buffer.Dispose();
}
public void Dispose()
{
begin_buffer.Dispose();
end_buffer.Dispose();
}