mcs/class/Managed.Windows.Forms/System.Windows.Forms.RTF/Picture.cs

   1 // Permission is hereby granted, free of charge, to any person obtaining
   2 // a copy of this software and associated documentation files (the
   3 // "Software"), to deal in the Software without restriction, including
   4 // without limitation the rights to use, copy, modify, merge, publish,
   5 // distribute, sublicense, and/or sell copies of the Software, and to
   6 // permit persons to whom the Software is furnished to do so, subject to
   7 // the following conditions:
   8 //
   9 // The above copyright notice and this permission notice shall be
  10 // included in all copies or substantial portions of the Software.
  11 //
  12 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  13 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  14 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  15 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  16 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  17 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  18 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  19 //
  20 // Copyright (c) 2007 Novell, Inc. (http://www.novell.com)
  21 //
  22 // Authors:
  23 //      Jackson Harper (jackson@ximian.com)
  24 //
  25
  26
  27 using System;
  28 using System.IO;
  29 using System.Drawing;
  30
  31 namespace System.Windows.Forms.RTF {
  32
  33         internal class Picture {
  34
  35                 private Minor image_type;
  36                 private Image image;
  37                 private byte [] data;
  38                 private float width = -1;
  39                 private float height = -1;
  40
  41
  42                 public Picture ()
  43                 {
  44
  45                 }
  46
  47                 public Minor ImageType {
  48                         get { return image_type; }
  49                         set { image_type = value; }
  50                 }
  51
  52                 public byte [] Data {
  53                         get { return data; }
  54                         set { data = value; }
  55                 }
  56
  57                 public float Width {
  58                         get {
  59                                 float w = width;
  60                                 if (w == -1) {
  61                                         if (image == null)
  62                                                 image = ToImage ();
  63                                         w = image.Width;
  64                                 }
  65                                 return w;
  66
  67                         }
  68                 }
  69
  70                 public float Height {
  71                         get {
  72                                 float h = height;
  73                                 if (h == -1) {
  74                                         if (image == null)
  75                                                 image = ToImage ();
  76                                         h = image.Height;
  77                                 }
  78                                 return h;
  79                         }
  80                 }
  81
  82                 public SizeF Size {
  83                         get {
  84                                 return new SizeF (Width, Height);
  85                         }
  86                 }
  87
  88                 public void SetWidthFromTwips (int twips)
  89                 {
  90                         width = (twips * 144) / 254;
  91                 }
  92
  93                 public void SetHeightFromTwips (int twips)
  94                 {
  95                         height = (twips * 144) / 254;
  96                 }
  97
  98                 //
  99                 // Makes sure that we got enough information to actually use the image
 100                 //
 101                 public bool IsValid ()
 102                 {
 103                         if  (data == null)
 104                                 return false;
 105                         switch (image_type) {
 106                         case Minor.PngBlip:
 107                         case Minor.WinMetafile:
 108                                 break;
 109                         default:
 110                                 return false;
 111                         }
 112
 113                         return true;
 114                 }
 115
 116                 public void DrawImage (Graphics dc, float x, float y, bool selected)
 117                 {
 118                         if (image == null)
 119                                 image = ToImage ();
 120
 121                         float height = this.height;
 122                         float width = this.width;
 123
 124                         if (height == -1)
 125                                 height = image.Height;
 126                         if (width == -1)
 127                                 width = image.Width;
 128                         dc.DrawImage (image, x, y, width, height);
 129                 }
 130
 131                 public Image ToImage ()
 132                 {
 133                         Console.WriteLine ("CREATING IMAGE:  {0}", data.Length);
 134                         return Image.FromStream (new MemoryStream (data));
 135                 }
 136         }
 137
 138 }
 139