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