I'm trying to use Julia with GTK and Cairo to draw onto a canvas. I think the following code (adapted from the example fragments on the GTK.jl page) should work, but it does not. (Other GTK widgets work, but not the canvas)
I would appreciate if someone can suggest what is wrong with this code, or give a pointer to a complete example.
using Gtk.ShortNames
using Cairo
function drawfn(w)
ctx = Gtk.getgc(w)
Cairo.set_coords(ctx, 0, 0, 800, 600, 0, 800, 0, 600)
h = Gtk.height(w)
w = Gtk.width(w)
Gtk.rectangle(ctx, 0, 0, w/2, h/2)
Gtk.set_source_rgb(ctx, 0, 0, 1)
Gtk.fill(ctx)
end
function main()
win = Gtk.@Window("stuff", 800,600)
c = Gtk.@Canvas()
Gtk.push!(win,c)
Gtk.draw(drawfn, c)
Gtk.showall(win)
end
main()
I think this was a bug in version 0.8.1 of Gtk.jl. I posted an issue to github after which vtjnash fixed it immediately and tagged version 0.8.2.