Re: [Vala] Convert RGB color value to HEX

[Satyajit Sahoo <satyajit happy gmail com>]

Thanks for all the help. really grateful. Here is the code if someone wants
to review.

On Monday, September 3, 2012, Jonas Kulla wrote:

> 2012/9/3 Satyajit Sahoo <satyajit happy gmail com <javascript:;>>
>
> > Hi. I need to get color value in HEX in my vala program.
> >
> > Basically, I get a color expression like this,
> >
> > rgb(red, green, blue) or rgba(red, green, blue, alpha)
> >
> > But I need to convert it into a format #rrggbb
> >
> > I cannot seem to understand how to do it.
>
>
> using Gtk;
> using Gdk;
>
> void main(string[] args)
> {
>     Gtk.init(ref args);
>
>     var win = new Gtk.Window(Gtk.WindowType.TOPLEVEL);
>     win.destroy.connect(Gtk.main_quit);
>
>     var b = new ColorButton();
>     b.use_alpha = true;
>     b.color_set.connect( (b) =>
>     {
>         Gdk.RGBA c = b.get_rgba();
>         string s =
>             "#%02x%02x%02x%02x"
>             .printf((uint)(Math.round(c.red*255)),
>                     (uint)(Math.round(c.green*255)),
>                     (uint)(Math.round(c.blue*255)),
>                     (uint)(Math.round(c.alpha*255)))
>             .up();
>         stdout.printf("%s\n", s);
>     });
>
>     win.add(b);
>     win.show_all();
>
>     Gtk.main();
> }


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