1 // 2 // 3 // Mono.Cairo drawing samples using image (png) as drawing surface 4 // Author: Hisham Mardam Bey <hisham@hisham.cc> 5 // 6 7 // 8 // Copyright (C) 2004 Novell, Inc (http://www.novell.com) 9 // 10 // Permission is hereby granted, free of charge, to any person obtaining 11 // a copy of this software and associated documentation files (the 12 // "Software"), to deal in the Software without restriction, including 13 // without limitation the rights to use, copy, modify, merge, publish, 14 // distribute, sublicense, and/or sell copies of the Software, and to 15 // permit persons to whom the Software is furnished to do so, subject to 16 // the following conditions: 17 // 18 // The above copyright notice and this permission notice shall be 19 // included in all copies or substantial portions of the Software. 20 // 21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 28 // 29 30 using System; 31 using Cairo; 32 33 public class CairoTest 34 { 35 static readonly double M_PI = 3.14159265358979323846; 36 draw(Cairo.Context gr, int width, int height)37 static void draw (Cairo.Context gr, int width, int height) 38 { 39 gr.Scale (width, height); 40 gr.LineWidth = 0.04; 41 42 gr.Arc (0.5, 0.5, 0.3, 0, 2 * M_PI); 43 gr.Clip (); 44 45 gr.NewPath (); 46 gr.Rectangle (new PointD (0, 0), 1, 1); 47 gr.Fill (); 48 gr.Color = new Color (0, 1, 0, 1); 49 gr.MoveTo ( new PointD (0, 0) ); 50 gr.LineTo ( new PointD (1, 1) ); 51 gr.MoveTo ( new PointD (1, 0) ); 52 gr.LineTo ( new PointD (0, 1) ); 53 gr.Stroke (); 54 } 55 56 Main()57 static void Main () 58 { 59 Surface s = new ImageSurface (Format.ARGB32, 500, 500); 60 Cairo.Context g = new Cairo.Context (s); 61 62 draw (g, 500, 500); 63 64 s.WriteToPng ("clip.png"); 65 } 66 } 67 68