Use conf.fatal for fatal configuration errors

[ardour.git] / scripts / addscopes.lua

diff --git a/scripts/addscopes.lua b/scripts/addscopes.lua
index deb3a5c814f769e172f600c97427968acf33c5b6..5ff40a7da81b2aeffb0070622cceb42d55fccb5d 100644 (file)
--- a/scripts/addscopes.lua
+++ b/scripts/addscopes.lua
@@ -55,3 +55,20 @@ function factory (params)
                end
        end
 end
+
+
+function icon (params) return function (ctx, width, height)
+       local wh = math.min (width, height) * .5
+       local x0 = math.ceil (wh * .4)
+       local x1 = math.floor (wh * 1.6)
+       ctx:rectangle (wh * .4, wh * .4, wh * 1.2, wh * 1.2)
+       ctx:set_source_rgba (.7, .7, .7, 1)
+       ctx:fill ()
+       ctx:set_line_width (1)
+       ctx:set_source_rgba (.0, .0, .0, 1)
+       ctx:move_to (x0, wh)
+       for x = x0, x1 do
+               ctx:line_to (x, wh - math.sin (2 * math.pi * (x-x0) / (x1-x0)) * wh * .5)
+       end
+       ctx:stroke ()
+end end