1 /*

     2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). 

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 * 

    14 * Description:

    15 *

    16 */

    17 using System;

    18 using System.Collections.Generic;

    19 using System.Text;

    20 using System.Drawing;

    21 using System.Windows.Forms;

    22 

    23 namespace SymbianUtils.Colour

    24 {

    25     public static class ColourUtils

    26     {

    27         public static Color Lighten( Color aColour )

    28         {

    29             Color ret = ControlPaint.Light( aColour );

    30             return ret;

    31         }

    32 

    33         public static Color LightenMore( Color aColour )

    34         {

    35             Color ret = ControlPaint.LightLight( aColour );

    36             return ret;

    37         }

    38 

    39         public static Color Darken( Color aColour )

    40         {

    41             Color ret = ControlPaint.Dark( aColour );

    42             return ret;

    43         }

    44 

    45         public static Color Lighten( Color aColour, float aPercentage )

    46         {

    47             int r = aColour.R;

    48             int g = aColour.G;

    49             int b = aColour.B;

    50             //

    51             int amount = (int) ( 255.0f * aPercentage );

    52             //

    53             r = Math.Min( r + amount, 255 );

    54             g = Math.Min( g + amount, 255 );

    55             b = Math.Min( b + amount, 255 );

    56             //

    57             Color ret = Color.FromArgb( r, g, b );

    58             return ret;

    59         }

    60 

    61         public static Color Darken( Color aColour, float aPercentage )

    62         {

    63             int r = aColour.R;

    64             int g = aColour.G;

    65             int b = aColour.B;

    66             //

    67             int amount = (int) ( 255.0f * aPercentage );

    68             //

    69             r = Math.Max( r - amount, 0 );

    70             g = Math.Max( g - amount, 0 );

    71             b = Math.Max( b - amount, 0 );

    72             //

    73             Color ret = Color.FromArgb( r, g, b );

    74             return ret;

    75         }

    76     }

    77 }