OpenHardwareMonitor-retired: External/Aga.Controls/Tree/NodeControls/NodeIcon.cs@5715aefd2bcc

     1 using System;

     2 using System.Collections.Generic;

     3 using System.Text;

     4 using System.Drawing;

     5 using System.Windows.Forms;

     6 using Aga.Controls.Properties;

     7 using System.ComponentModel;

     9 namespace Aga.Controls.Tree.NodeControls

    10 {

    11 	public class NodeIcon : BindableControl

    12 	{

    13 		public NodeIcon()

    14 		{

    15 			LeftMargin = 1;

    16 		}

    18 		public override Size MeasureSize(TreeNodeAdv node, DrawContext context)

    19 		{

    20 			Image image = GetIcon(node);

    21 			if (image != null)

    22 				return image.Size;

    23 			else

    24 				return Size.Empty;

    25 		}

    28 		public override void Draw(TreeNodeAdv node, DrawContext context)

    29 		{

    30 			Image image = GetIcon(node);

    31 			if (image != null)

    32 			{

    33 				Rectangle r = GetBounds(node, context);

    34 				if ( image.Width > 0 && image.Height > 0 )

    35 				{

    36 					switch (_scaleMode)

    37 					{

    38 						case ImageScaleMode.Fit:

    39 							context.Graphics.DrawImage(image, r);

    40 							break;

    41 						case ImageScaleMode.ScaleDown:

    42 							{

    43 								float factor = Math.Min((float)r.Width / (float)image.Width, (float)r.Height / (float)image.Height);

    44 								if (factor < 1)

    45 									context.Graphics.DrawImage(image, r.X, r.Y, image.Width * factor, image.Height * factor);

    46 								else

    47 									context.Graphics.DrawImage(image, r.X, r.Y, image.Width, image.Height);

    48 							} break;

    49 						case ImageScaleMode.ScaleUp:

    50 							{

    51 								float factor = Math.Max((float)r.Width / (float)image.Width, (float)r.Height / (float)image.Height);

    52 								if (factor > 1)

    53 									context.Graphics.DrawImage(image, r.X, r.Y, image.Width * factor, image.Height * factor);

    54 								else

    55 									context.Graphics.DrawImage(image, r.X, r.Y, image.Width, image.Height);

    56 							} break;

    57 						case ImageScaleMode.AlwaysScale:

    58 							{

    59 								float fx = (float)r.Width / (float)image.Width;

    60 								float fy = (float)r.Height / (float)image.Height;

    61 								if (Math.Min(fx, fy) < 1)

    62 								{ //scale down

    63 									float factor = Math.Min(fx, fy);

    64 									context.Graphics.DrawImage(image, r.X, r.Y, image.Width * factor, image.Height * factor);

    65 								}

    66 								else if (Math.Max(fx, fy) > 1)

    67 								{

    68 									float factor = Math.Max(fx, fy);

    69 									context.Graphics.DrawImage(image, r.X, r.Y, image.Width * factor, image.Height * factor);

    70 								}

    71 								else

    72 									context.Graphics.DrawImage(image, r.X, r.Y, image.Width, image.Height);

    73 							} break;

    74 						case ImageScaleMode.Clip:

    75 						default:

    76 							context.Graphics.DrawImage(image, r.X, r.Y, image.Width, image.Height);

    77 							break;

    78 					}

    79 				}

    81 			}

    82 		}

    84 		protected virtual Image GetIcon(TreeNodeAdv node)

    85 		{

    86 			return GetValue(node) as Image;

    87 		}

    89         private ImageScaleMode _scaleMode = ImageScaleMode.Clip;

    90         [DefaultValue("Clip"), Category("Appearance")]

    91         public ImageScaleMode ScaleMode

    92         {

    93             get { return _scaleMode; }

    94             set { _scaleMode = value; }

    95         }

    98 	}

    99 }

author	sl
	Thu, 01 Jan 2015 23:35:49 +0100
changeset 405	5715aefd2bcc
permissions	-rw-r--r--