1: /// <summary>

   2: /// Adjusts the brightness

   3: /// </summary>

   4: /// <param name="Image">Image to change</param>

   5: /// <param name="Value">-255 to 255</param>

   6: /// <returns>A bitmap object</returns>

   7: public static Bitmap AdjustBrightness(Bitmap Image, int Value)

   8: {

   9:     float FinalValue = (float)Value / 255.0f;

  10:     ColorMatrix TempMatrix = new ColorMatrix();

  11:     TempMatrix.Matrix = new float[][]{

  12:                     new float[] {1, 0, 0, 0, 0},

  13:                     new float[] {0, 1, 0, 0, 0},

  14:                     new float[] {0, 0, 1, 0, 0},

  15:                     new float[] {0, 0, 0, 1, 0},

  16:                     new float[] {FinalValue, FinalValue, FinalValue, 1, 1}

  17:                 };

  18:     return TempMatrix.Apply(Image);

  19: }

  20:  

  21:  

  22: /*

  23: Copyright (c) 2010 <a href="http://www.gutgames.com">James Craig</a>

  24: 

  25: Permission is hereby granted, free of charge, to any person obtaining a copy

  26: of this software and associated documentation files (the "Software"), to deal

  27: in the Software without restriction, including without limitation the rights

  28: to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

  29: copies of the Software, and to permit persons to whom the Software is

  30: furnished to do so, subject to the following conditions:

  31: 

  32: The above copyright notice and this permission notice shall be included in

  33: all copies or substantial portions of the Software.

  34: 

  35: THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

  36: IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

  37: FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

  38: AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

  39: LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

  40: OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

  41: THE SOFTWARE.*/

  42:  

  43: #region Usings

  44: using System.Drawing;

  45: using System.Drawing.Imaging;

  46: #endregion

  47:  

  48: namespace Utilities.Media.Image

  49: {

  50:     /// <summary>

  51:     /// Helper class for setting up and applying a color matrix

  52:     /// </summary>

  53:     public class ColorMatrix

  54:     {

  55:         #region Constructor

  56:  

  57:         /// <summary>

  58:         /// Constructor

  59:         /// </summary>

  60:         public ColorMatrix()

  61:         {

  62:         }

  63:  

  64:         #endregion

  65:  

  66:         #region Properties

  67:  

  68:         /// <summary>

  69:         /// Matrix containing the values of the ColorMatrix

  70:         /// </summary>

  71:         public float[][] Matrix { get; set; }

  72:  

  73:         #endregion

  74:  

  75:         #region Public Functions

  76:  

  77:         /// <summary>

  78:         /// Applies the color matrix

  79:         /// </summary>

  80:         /// <param name="OriginalImage">Image sent in</param>

  81:         /// <returns>An image with the color matrix applied</returns>

  82:         public Bitmap Apply(Bitmap OriginalImage)

  83:         {

  84:             Bitmap NewBitmap = new Bitmap(OriginalImage.Width, OriginalImage.Height);

  85:             using (Graphics NewGraphics = Graphics.FromImage(NewBitmap))

  86:             {

  87:                 System.Drawing.Imaging.ColorMatrix NewColorMatrix = new System.Drawing.Imaging.ColorMatrix(Matrix);

  88:                 using (ImageAttributes Attributes = new ImageAttributes())

  89:                 {

  90:                     Attributes.SetColorMatrix(NewColorMatrix);

  91:                     NewGraphics.DrawImage(OriginalImage,

  92:                         new System.Drawing.Rectangle(0, 0, OriginalImage.Width, OriginalImage.Height),

  93:                         0, 0, OriginalImage.Width, OriginalImage.Height,

  94:                         GraphicsUnit.Pixel,

  95:                         Attributes);

  96:                 }

  97:             }

  98:             return NewBitmap;

  99:         }

 100:  

 101:         #endregion

 102:     }

 103: }