Re: [Vala] Genie + Gtk: Image Base64

["webierta gmail com" <webierta gmail com>]

Got it!

Thank you very much, I was trying something similar, but without success:

First convert the string to bytes and then use
MemoryInputStream.from_bytes ()

Your solution is perfect: I owe you a place in the acknowledgments of my
application.

Thank you!

El 08/03/17 a las 12:49, Al Thomas escribió:
> > ----- Original Message -----
> > From: "webierta gmail com" <webierta gmail com>
> > Sent: Wednesday, 8 March 2017, 10:59
> > Subject: [Vala] Genie + Gtk: Image Base64
> > I would like to know if in Genie (with Gtk +) I can visualize an image
> > that I have as a string in base64 format?
> > I tried to use Base64.decode like this:
> > Decoded: string = (string) Base64.decode ("iVBORw0KGgoAAAAN ...")
> > But I do not know if this can be translated somehow to Gdk.Pixbuf?
>
> Base64.decode returns an array of unsigned char (uchar[]). This is the
> same as uint8[], also known as a buffer. Instead of casting to string
> assign the data to a buffer and then use MemoryInputStream:
>
> [indent=4]
> uses Gdk
>
> init
>     data:array of uint8 = Base64.decode ("iVBORw0KGgoAAAAN ...")
>     var stream = new MemoryInputStream.from_data( data )
>     try
>         var image = new Pixbuf.from_stream( stream )
>     except err:Error
>         print( err.message )
>
> You dummy data gives me:
> Premature end-of-file encountered
>
> So it kind of works, hopefully it will with a real image.
>
> Al