Change how Cairo is presented to Lua scripts.

Makes the whole thing a bit more stable and less weird.

4 files changed, 83 insertions, 83 deletions

diff --git a/share/library/Passive/capacitor.lua b/share/library/Passive/capacitor.lua
index 121b01d..bd8c408 100644
--- a/share/library/Passive/capacitor.lua
+++ b/share/library/Passive/capacitor.lua
@@ -17,20 +17,20 @@ local terminals = {{-2, 0}, {2, 0}}
 -- Rendering
 local render = function (cr)
 	-- The vertical lines
-	cr.move_to (-0.2, -1)
-	cr.line_to (-0.2, 1)
+	cr:move_to (-0.2, -1)
+	cr:line_to (-0.2, 1)
 
-	cr.move_to (0.2, -1)
-	cr.line_to (0.2, 1)
+	cr:move_to (0.2, -1)
+	cr:line_to (0.2, 1)
 
 	-- The terminals
-	cr.move_to (-2, 0)
-	cr.line_to (-0.2, 0)
+	cr:move_to (-2, 0)
+	cr:line_to (-0.2, 0)
 
-	cr.move_to (0.2, 0)
-	cr.line_to (2, 0)
+	cr:move_to (0.2, 0)
+	cr:line_to (2, 0)
 
-	cr.stroke ()
+	cr:stroke ()
 end
 
 -- Register the symbol
diff --git a/share/library/Passive/diode.lua b/share/library/Passive/diode.lua
index d480b46..46bfa99 100644
--- a/share/library/Passive/diode.lua
+++ b/share/library/Passive/diode.lua
@@ -45,79 +45,79 @@ local terminals = {{-2, 0}, {2, 0}}
 -- Rendering
 local render = function (cr)
 	-- The triangle
-	cr.move_to (-1, -1)
-	cr.line_to (1, 0)
-	cr.line_to (-1, 1)
-	cr.line_to (-1, -1)
+	cr:move_to (-1, -1)
+	cr:line_to (1, 0)
+	cr:line_to (-1, 1)
+	cr:line_to (-1, -1)
 
 	-- The vertical line
-	cr.move_to (1, 1)
-	cr.line_to (1, -1)
+	cr:move_to (1, 1)
+	cr:line_to (1, -1)
 
 	-- The terminals
-	cr.move_to (-2, 0)
-	cr.line_to (2, 0)
+	cr:move_to (-2, 0)
+	cr:line_to (2, 0)
 
-	cr.stroke ()
+	cr:stroke ()
 end
 
 local render_zener = function (cr)
 	render (cr)
 
-	cr.move_to (1, 1)
-	cr.line_to (0.5, 1)
+	cr:move_to (1, 1)
+	cr:line_to (0.5, 1)
 
-	cr.stroke ()
+	cr:stroke ()
 end
 
 local render_arrow = function (cr)
-	cr.move_to (0, 0)
-	cr.line_to (0, -1.5)
+	cr:move_to (0, 0)
+	cr:line_to (0, -1.5)
 
-	cr.stroke ()
+	cr:stroke ()
 
-	cr.move_to (-0.3, -0.7)
-	cr.line_to (0, -1.5)
-	cr.line_to (0.3, -0.7)
-	cr.close_path ()
+	cr:move_to (-0.3, -0.7)
+	cr:line_to (0, -1.5)
+	cr:line_to (0.3, -0.7)
+	cr:close_path ()
 
-	cr.fill ()
+	cr:fill ()
 end
 
 local render_radiation = function (cr)
-	cr.save ()
-	cr.translate (-0.4, 0)
+	cr:save ()
+	cr:translate (-0.4, 0)
 	render_arrow (cr)
-	cr.restore ()
+	cr:restore ()
 
-	cr.save ()
-	cr.translate (0.4, 0)
+	cr:save ()
+	cr:translate (0.4, 0)
 	render_arrow (cr)
-	cr.restore ()
+	cr:restore ()
 end
 
 local render_led = function (cr)
 	render (cr)
 
-	cr.save ()
-	cr.translate (-0.3, -1.0)
-	cr.rotate (math.atan2 (1, 1))
+	cr:save ()
+	cr:translate (-0.3, -1.0)
+	cr:rotate (math.atan2 (1, 1))
 
 	render_radiation (cr)
 
-	cr.restore ()
+	cr:restore ()
 end
 
 local render_photo = function (cr)
 	render (cr)
 
-	cr.save ()
-	cr.translate (0.75, -2.05)
-	cr.rotate (math.atan2 (-1, -1))
+	cr:save ()
+	cr:translate (0.75, -2.05)
+	cr:rotate (math.atan2 (-1, -1))
 
 	render_radiation (cr)
 
-	cr.restore ()
+	cr:restore ()
 end
 
 -- Register the symbol
diff --git a/share/library/Passive/inductor.lua b/share/library/Passive/inductor.lua
index b63a8f5..34a1cda 100644
--- a/share/library/Passive/inductor.lua
+++ b/share/library/Passive/inductor.lua
@@ -26,22 +26,22 @@ local terminals = {{-2, 0}, {2, 0}}
 -- Rendering
 local render = function (cr)
 	-- The arcs
-	cr.arc (-1.5, 0, 0.5, math.pi, 0)
-	cr.arc (-0.5, 0, 0.5, math.pi, 0)
-	cr.arc (0.5, 0, 0.5, math.pi, 0)
-	cr.arc (1.5, 0, 0.5, math.pi, 0)
+	cr:arc (-1.5, 0, 0.5, math.pi, 0)
+	cr:arc (-0.5, 0, 0.5, math.pi, 0)
+	cr:arc (0.5, 0, 0.5, math.pi, 0)
+	cr:arc (1.5, 0, 0.5, math.pi, 0)
 
-	cr.stroke ()
+	cr:stroke ()
 end
 
 local render_core = function (cr)
 	render (cr)
 
 	-- The core
-	cr.move_to (-2, -1)
-	cr.line_to (2, -1)
+	cr:move_to (-2, -1)
+	cr:line_to (2, -1)
 
-	cr.stroke ()
+	cr:stroke ()
 end
 
 -- Register the symbols
diff --git a/share/library/Passive/resistor.lua b/share/library/Passive/resistor.lua
index fdb1642..7c0b222 100644
--- a/share/library/Passive/resistor.lua
+++ b/share/library/Passive/resistor.lua
@@ -38,63 +38,63 @@ local terminals_pot = {{-2, 0}, {2, 0}, {2, -2}}
 -- Rendering
 local render = function (cr)
 	-- The rectangle
-	cr.move_to (-1.5, -0.5)
-	cr.line_to (1.5, -0.5)
-	cr.line_to (1.5, 0.5)
-	cr.line_to (-1.5, 0.5)
-	cr.line_to (-1.5, -0.5)
+	cr:move_to (-1.5, -0.5)
+	cr:line_to (1.5, -0.5)
+	cr:line_to (1.5, 0.5)
+	cr:line_to (-1.5, 0.5)
+	cr:line_to (-1.5, -0.5)
 
 	-- The terminals
-	cr.move_to (-2, 0)
-	cr.line_to (-1.5, 0)
+	cr:move_to (-2, 0)
+	cr:line_to (-1.5, 0)
 
-	cr.move_to (1.5, 0)
-	cr.line_to (2, 0)
+	cr:move_to (1.5, 0)
+	cr:line_to (2, 0)
 
-	cr.stroke ()
+	cr:stroke ()
 end
 
 local render_adj = function (cr)
 	render (cr)
 
 	-- The arrow
-	cr.move_to (-1, 1)
-	cr.line_to (1, -1)
+	cr:move_to (-1, 1)
+	cr:line_to (1, -1)
 
-	cr.stroke ()
+	cr:stroke ()
 
-	cr.save ()
-	cr.translate (1.5, -1.5)
-	cr.rotate (math.atan2 (1, 1))
+	cr:save ()
+	cr:translate (1.5, -1.5)
+	cr:rotate (math.atan2 (1, 1))
 
-	cr.move_to (0, 0)
-	cr.line_to (0.3, 0.8)
-	cr.line_to (-0.3, 0.8)
-	cr.close_path ()
+	cr:move_to (0, 0)
+	cr:line_to (0.3, 0.8)
+	cr:line_to (-0.3, 0.8)
+	cr:close_path ()
 
-	cr.fill ()
-	cr.restore ()
+	cr:fill ()
+	cr:restore ()
 end
 
 local render_pot = function (cr)
 	render (cr)
 
 	-- The contact
-	cr.move_to (0, -2)
-	cr.line_to (2, -2)
+	cr:move_to (0, -2)
+	cr:line_to (2, -2)
 
 	-- The arrow
-	cr.move_to (0, -2)
-	cr.line_to (0, -1)
+	cr:move_to (0, -2)
+	cr:line_to (0, -1)
 
-	cr.stroke ()
+	cr:stroke ()
 
-	cr.move_to (0, -0.5)
-	cr.line_to (0.3, -1.3)
-	cr.line_to (-0.3, -1.3)
-	cr.close_path ()
+	cr:move_to (0, -0.5)
+	cr:line_to (0.3, -1.3)
+	cr:line_to (-0.3, -1.3)
+	cr:close_path ()
 
-	cr.fill ()
+	cr:fill ()
 end
 
 -- Register the symbol