[longomatch] Replace deprected API for setting Cairo colors

[Andoni Morales Alastruey <amorales src gnome org>]

commit 1979c3efb4055d3a93cd14f60476c1d11510a903
Author: Andoni Morales Alastruey <ylatuya gmail com>
Date:   Thu May 29 12:04:27 2014 +0200

    Replace deprected API for setting Cairo colors

 LongoMatch.Drawing.Cairo/CairoBackend.cs |   37 ++++++++++++++---------------
 1 files changed, 18 insertions(+), 19 deletions(-)
---
diff --git a/LongoMatch.Drawing.Cairo/CairoBackend.cs b/LongoMatch.Drawing.Cairo/CairoBackend.cs
index e981bd3..860906f 100644
--- a/LongoMatch.Drawing.Cairo/CairoBackend.cs
+++ b/LongoMatch.Drawing.Cairo/CairoBackend.cs
@@ -20,9 +20,8 @@ using System.Collections.Generic;
 using Cairo;
 using LongoMatch.Interfaces;
 using LongoMatch.Common;
-using LColor = LongoMatch.Common.Color;
+using Color = LongoMatch.Common.Color;
 using Point = LongoMatch.Common.Point;
-using Color = Cairo.Color;
 using LFontSlant = LongoMatch.Common.FontSlant;
 using LFontWeight = LongoMatch.Common.FontWeight;
 using FontSlant = Cairo.FontSlant;
@@ -43,8 +42,8 @@ namespace LongoMatch.Drawing.Cairo
                public CairoBackend ()
                {
                        Translation = new Point (0, 0);
-                       StrokeColor = new LColor (0, 0, 0, 0);
-                       FillColor = new LColor (0, 0, 0, 0);
+                       StrokeColor = Color.Black;
+                       FillColor = Color.Black;
                        LineWidth = 2;
                        FontSize = 12;
                        FontFamily = "Verdana";
@@ -68,15 +67,15 @@ namespace LongoMatch.Drawing.Cairo
                        protected get;
                }
                
-               public LColor StrokeColor {
+               public Color StrokeColor {
                        set {
-                               strokeColor = ColorToCairoColor (value);
+                               strokeColor = value;
                        }
                }
                
-               public LColor FillColor {
+               public Color FillColor {
                        set {
-                               fillColor = ColorToCairoColor (value);
+                               fillColor = value;
                        }
                }
                
@@ -130,7 +129,7 @@ namespace LongoMatch.Drawing.Cairo
                }
                
                public void DrawLine (Point start, Point stop) {
-                       context.Color = strokeColor;
+                       SetColor (strokeColor);
                        context.LineWidth = LineWidth;
                        context.MoveTo (start.X, start.Y);
                        context.LineTo (stop.X, stop.Y);
@@ -160,13 +159,13 @@ namespace LongoMatch.Drawing.Cairo
                                break;
                        }
                        
-                       context.Color = strokeColor;
+                       SetColor (strokeColor);
                        context.MoveTo (x1, y1);
                        context.LineTo (x2, y2);
                        context.LineTo (x3, y3);
                        context.ClosePath();
                        context.StrokePreserve ();
-                       context.Color = fillColor;
+                       SetColor (fillColor);
                        context.Fill();
                }
                
@@ -230,7 +229,7 @@ namespace LongoMatch.Drawing.Cairo
                        FontExtents fextents;
                        double x, y;
                        
-                       context.Color = strokeColor;
+                       SetColor (strokeColor);
                        context.SelectFontFace (FontFamily, fSlant, fWeight);
                        context.SetFontSize (FontSize);
                        extents = context.TextExtents (text);
@@ -267,17 +266,17 @@ namespace LongoMatch.Drawing.Cairo
                        context.LineCap = LineCap.Round;
                        context.LineJoin = LineJoin.Round;
                        context.LineWidth = LineWidth;
-                       context.Color = strokeColor;
+                       SetColor (strokeColor);
                        context.StrokePreserve();
-                       context.Color = fillColor;
+                       SetColor (fillColor);
                        context.Fill();
                }
                
-               Color ColorToCairoColor (LColor color) {
-                       return new Color ((double) color.R / ushort.MaxValue,
-                                         (double) color.G / ushort.MaxValue,
-                                         (double) color.B / ushort.MaxValue,
-                                         (double) color.A / ushort.MaxValue);
+               void SetColor (Color color) {
+                       context.SetSourceRGBA ((double) color.R / byte.MaxValue,
+                                              (double) color.G / byte.MaxValue,
+                                              (double) color.B / byte.MaxValue,
+                                              (double) color.A / byte.MaxValue);
                }
                
        }