mcs/class/Mono.Cairo/Samples/png/image.cs

   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
  37
  38
  39         static void draw (Cairo.Context gr, int width, int height)
  40         {
  41                 int w, h;
  42                 ImageSurface image;
  43
  44                 gr.Scale (width, height);
  45                 gr.LineWidth = 0.04;
  46
  47                 image = new ImageSurface ("data/e.png");
  48                 w = image.Width;
  49                 h = image.Height;
  50
  51                 gr.Translate (0.5, 0.5);
  52                 gr.Rotate (45* M_PI/180);
  53                 gr.Scale  (1.0/w, 1.0/h);
  54                 gr.Translate (-0.5*w, -0.5*h);
  55
  56                 image.Show (gr, 0, 0);
  57                 image.Destroy ();
  58         }
  59
  60         static void Main ()
  61         {
  62                 Surface s = new ImageSurface (Format.ARGB32, 500, 500);
  63                 Cairo.Context g = new Cairo.Context (s);
  64
  65                 draw (g, 500, 500);
  66
  67                 s.WriteToPng ("image.png");
  68         }
  69 }