2012/9/3 Satyajit Sahoo <[email protected]>
> 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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