Data commit

Task/Draw-a-pixel/Ruby/draw-a-pixel.rb

@@ -0,0 +1,25 @@
+require 'gtk3'
+
+Width, Height = 320, 240
+PosX, PosY = 100, 100
+
+window = Gtk::Window.new
+window.set_default_size(Width, Height)
+window.title = 'Draw a pixel'
+
+window.signal_connect(:draw) do |widget, context|
+  context.set_antialias(Cairo::Antialias::NONE)
+  # paint out bg with white
+  # context.set_source_rgb(1.0, 1.0, 1.0)
+  # context.paint(1.0)
+  # draw a rectangle
+  context.set_source_rgb(1.0, 0.0, 0.0)
+  context.fill do
+    context.rectangle(PosX, PosY, 1, 1)
+  end
+end
+
+window.signal_connect(:destroy) { Gtk.main_quit }
+
+window.show
+Gtk.main