Have you tried the clutter sample code from the vala site? https://live.gnome.org/Vala/ClutterSamples
Am Dienstag, den 09.04.2013, 16:37 +0200 schrieb Donn: > Greetings, hope this is the right list for getting help. > > I'm fiddling with Vala and am interested in Clutter + Cairo. (I come > from Python, so this whole gObject and C world is very scary.) > > Below's the short code I am trying to get working. I wanted to create an > Actor class and then add it to the stage - just to get into the swing of > this thing. > I am working from the Clutter docs (which is C) and just hacking > across to Vala (using the Vala docs). It's tough going. > > Can anyone help me get this code to draw the custom actor? Right now > it's just drawing nothing. (The clutter.rectangle in red does work.) > > --code-- > > /* > > Working from the sample code at: > https://developer.gnome.org/clutter/stable/ClutterCanvas.html > > */ > > public class AnActor : Clutter.Actor { > > public Clutter.Canvas canvas; > > public AnActor() { > canvas = new Clutter.Canvas(); > canvas.set_size(300,300); > > //Kosher??? > this.set_content( canvas ); > > //Connect to the draw signal. > canvas.draw.connect(drawme); > } > > private bool drawme( Cairo.Context ctx, int w, int h) { > stdout.printf("Just to test this ran at all: %d\n", w); > > ctx.scale(w,h); > ctx.set_source_rgb(0,0,0); > > //Rect doesn't draw. > //ctx.rectangle(0,0,200,200); > //ctx.fill(); > > //paint doesn't draw. > ctx.paint(); > > return true; > } > } > > > > int main(string [] args) { > // Start clutter. > var result = Clutter.init(ref args); > if (result != Clutter.InitError.SUCCESS) { > stderr.printf("Error: %s\n", result.to_string()); > return 1; > } > > var stage = Clutter.Stage.get_default(); > stage.destroy.connect(Clutter.main_quit); > > //Make my custom Actor: > var a = new AnActor(); > > //This is dodgy: > stage.add_child(a); > > > //This works: > var r1 = new Clutter.Rectangle(); > r1.width = 50; > r1.height = 50; > r1.color = Clutter.Color.from_string("rgb(255, 0, 0)"); > stage.add_child(r1); > > a.canvas.invalidate(); > > stage.show_all(); > > Clutter.main(); > return 0; > } > > > Compile with: > $ valac --pkg clutter-1.0 clutter_canvas.vala > > --ends-- > > > > > Thanks, > \d _______________________________________________ vala-list mailing list vala-list@gnome.org https://mail.gnome.org/mailman/listinfo/vala-list
