A simple, horrible test of Clutter and Vala

cluttertest.vala

// This code is under public domain, or the CC0 "license" in legal
// jurisdictions where the concept of public domain does not exist.
// See http://creativecommons.org/publicdomain/zero/1.0/legalcode
// for more info.

// to compile, try
// `valac --pkg clutter-1.0 cluttertest.vala`
// You will need to have the Clutter headers installed on your system.

namespace ClutterTest {
	class Core : GLib.Object {

		// three texts wise
		private static Clutter.Text hello1 = null;
		private static Clutter.Text hello2 = null;
		private static Clutter.Text hello3 = null;
		
		// init my floatin' brothers
		private static double rotation = 0;
		private static float startpos;
		private static float endpos;
		private static float range;
		private static float pos;

		static void on_new_frame(Clutter.Timeline sender, int frame) {
			if (pos > endpos) // THE END(?)
				pos = startpos; // start again!
			rotation += 360.0/1200.0; // turn 0.3deg per frame
			pos += range/1200.0F;
			
			hello1.rotation_angle_z = rotation; // rotate this
			hello2.rotation_angle_z = -rotation; // rotate that
			hello3.y = pos; // move thineself
		}

		public static int main(string[] args) {
			Clutter.init(ref args);
			
			// static position for specific font face size and text
			startpos = 25.0F;
			endpos = 1940.0F;
			pos = 25.0F;

			// wuts dat my range is calculated
			range = endpos-startpos;
			
			// some bog-standard colours
			Clutter.Color white = {255, 255, 255, 255};
			Clutter.Color black = {0, 0, 0, 255};

			Clutter.Stage stage = Clutter.Stage.get_default(); // run of the mill stage
			stage.set_size(512.0F, 512.0F); // 512x512px stage area
			stage.color = black; // background color!
			stage.title = "Super awesome Clutter demo!"; // window title!

			Clutter.Timeline line = new Clutter.Timeline(60);
			line.new_frame.connect(on_new_frame);
			line.loop = true;

			// yeah i know, MS font. forgive me!
			hello1 = new Clutter.Text.full("Segoe UI 24", "Hello, world!", white);
			hello1.set_position(200.0F, 200.0F);
			stage.add(hello1);
			
			hello2 = new Clutter.Text.full("Segoe UI 48", "Hello, world!", {255, 0, 0, 128}); // 50% transparent red
			hello2.set_position(200.0F, 200.0F);
			stage.add(hello2);
			
			hello3 = new Clutter.Text.full("Segoe UI 196", "Hello, world!", {255, 255, 255, 192}); // 75% transparent white
			hello3.set_position(-90.0F, startpos);
			hello3.rotation_angle_z = -90; // (90 deg acw)
			stage.add(hello3);

			stage.show_all(); // SUPRISE COCKFAGS HERE'S A FRESH STAGE
			
			line.start(); // roll the reel

			Clutter.main(); // get the show on the road

			return 0;
		}

	}	
}