text-on-path.rb in cairo-1.5.0

- old
+ new

@@ -7,11 +7,11 @@
 
 require 'cairo'
 require 'pango'
 
 def render_background(cr)
-  cr.set_source_rgba(1.0, 1.0, 1.0)
+  cr.set_source_color(:white)
   cr.paint
 end
 
 def make_layout(cr, text)
   layout = cr.create_pango_layout
@@ -26,11 +26,11 @@
 
   cr = Cairo::Context.new(surface)
 
   render_background(cr)
 
-  cr.set_source_rgba(1, 0, 0, 1)
+  cr.set_source_color(:red)
   cr.move_to(25, 350)
   cr.line_to(150, 375)
   cr.curve_to(275, 400, 450, 350, 450, 200)
   cr.curve_to(450, 0, 300, 150, 50, 50)
   cr.stroke_preserve
@@ -46,16 +46,15 @@
   cr.fill_preserve
   cr.set_source_rgba(0.1, 0.1, 0.1)
   cr.stroke
 
   cr.show_page
-
-  cr
 end
 
 def output
-  surface = Cairo::ImageSurface.new(500, 500)
-  render(surface)
-  surface.write_to_png("text-on-path.png")
+  Cairo::ImageSurface.new(500, 500) do |surface|
+    render(surface)
+    surface.write_to_png("text-on-path.png")
+  end
 end
 
 output