ButtonChrome.cs source code in C# .NET

Source code for the .NET framework in C#

                        

Code:

/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / wpf / src / Themes / Royale / Microsoft / Windows / Themes / ButtonChrome.cs / 1 / ButtonChrome.cs

                            //---------------------------------------------------------------------------- 
// File: ButtonChrome.cs
//
// Description:
// Implementation of thick chrome for "full figured" buttons in Royale. 
//
// History: 
//  11/14/2005 - AtanasK - Cloned from Luna Blue source files. 
//
// Copyright (C) 2005 by Microsoft Corporation.  All rights reserved. 
//
//---------------------------------------------------------------------------
using System.Windows.Shapes;
using System.Windows.Controls; 
using System.Diagnostics;
using System.Threading; 
 
using System.Windows;
using System.Windows.Media; 
using MS.Internal;

using System;
 
namespace Microsoft.Windows.Themes
{ 
    ///  
    /// The ButtonChrome element
    /// This element is a theme-specific type that is used as an optimization 
    /// for a common complex rendering used in Royale
    ///
    /// 
    ///  

    // This is functionally equivalent to the following visual tree: 
    // 
    //   
    //        
    //       
    //
    //       
    // 
    //       
    //       
    //
    //       
    //       
    // 
    //        
    //        
    //
    //       
    //        
    //
    //        
    //       
    // 
    //       
    //       
    //
    //        
    //       
    // 
    //        
    //        
    //   
 
    public sealed class ButtonChrome : Decorator 
    {
 
        #region Constructors

        static ButtonChrome()
        { 
            IsEnabledProperty.OverrideMetadata(typeof(ButtonChrome), new FrameworkPropertyMetadata(true, FrameworkPropertyMetadataOptions.AffectsRender));
        } 
 
        /// 
        /// Instantiates a new instance of a ButtonChrome with no parent element. 
        /// 
        /// 
        public ButtonChrome()
        { 
        }
 
        #endregion Constructors 

        #region Dynamic Properties 


        /// 
        /// DependencyProperty for  property. 
        /// 
        public static readonly DependencyProperty FillProperty = 
                Shape.FillProperty.AddOwner( 
                        typeof(ButtonChrome),
                        new FrameworkPropertyMetadata( 
                                null,
                                FrameworkPropertyMetadataOptions.AffectsRender));

        ///  
        /// The Fill property defines the brush used to fill the border region.
        ///  
        public Brush Fill 
        {
            get { return (Brush) GetValue(FillProperty); } 
            set { SetValue(FillProperty, value); }
        }

        ///  
        /// DependencyProperty for  property.
        ///  
        public static readonly DependencyProperty BorderBrushProperty = 
                Border.BorderBrushProperty.AddOwner(
                        typeof(ButtonChrome), 
                        new FrameworkPropertyMetadata(
                                null,
                                FrameworkPropertyMetadataOptions.AffectsRender));
 
        /// 
        /// The BorderBrush property defines the brush used to fill the border region. 
        ///  
        public Brush BorderBrush
        { 
            get { return (Brush) GetValue(BorderBrushProperty); }
            set { SetValue(BorderBrushProperty, value); }
        }
 
        /// 
        /// DependencyProperty for  property. 
        ///  
        public static readonly DependencyProperty RenderDefaultedProperty =
                 DependencyProperty.Register("RenderDefaulted", 
                         typeof(bool),
                         typeof(ButtonChrome),
                         new FrameworkPropertyMetadata(
                                false, 
                                FrameworkPropertyMetadataOptions.AffectsRender));
 
        ///  
        /// When true the chrome renders with a defaulted look.
        ///  
        public bool RenderDefaulted
        {
            get { return (bool) GetValue(RenderDefaultedProperty); }
            set { SetValue(RenderDefaultedProperty, value); } 
        }
 
 
        /// 
        /// DependencyProperty for  property. 
        /// 
        public static readonly DependencyProperty RenderMouseOverProperty =
                 DependencyProperty.Register("RenderMouseOver",
                         typeof(bool), 
                         typeof(ButtonChrome),
                         new FrameworkPropertyMetadata( 
                                false, 
                                FrameworkPropertyMetadataOptions.AffectsRender));
 
        /// 
        /// When true the chrome renders with a mouse over look.
        /// 
        public bool RenderMouseOver 
        {
            get { return (bool) GetValue(RenderMouseOverProperty); } 
            set { SetValue(RenderMouseOverProperty, value); } 
        }
 

        /// 
        /// DependencyProperty for  property.
        ///  
        public static readonly DependencyProperty RenderPressedProperty =
                 DependencyProperty.Register("RenderPressed", 
                         typeof(bool), 
                         typeof(ButtonChrome),
                         new FrameworkPropertyMetadata( 
                                false,
                                FrameworkPropertyMetadataOptions.AffectsRender));

        ///  
        /// When true the chrome renders with a pressed look.
        ///  
        public bool RenderPressed 
        {
            get { return (bool) GetValue(RenderPressedProperty); } 
            set { SetValue(RenderPressedProperty, value); }
        }

        #endregion Dynamic Properties 

        #region Protected Methods 
 
        private const double sideThickness = 4.0;
        private const double sideThickness2 = 2 * sideThickness; 

        /// 
        /// Updates DesiredSize of the ButtonChrome.  Called by parent UIElement.  This is the first pass of layout.
        ///  
        /// 
        /// ButtonChrome basically inflates the desired size of its one child by 4 on all four sides 
        ///  
        /// Available size is an "upper limit" that the return value should not exceed.
        /// The ButtonChrome's desired size. 
        protected override Size MeasureOverride(Size availableSize)
        {
            Size desired;
            UIElement child = Child; 
            if (child != null)
            { 
                Size childConstraint = new Size(); 
                bool isWidthTooSmall = (availableSize.Width < sideThickness2);
                bool isHeightTooSmall = (availableSize.Height < sideThickness2); 

                if (!isWidthTooSmall)
                {
                    childConstraint.Width = availableSize.Width - sideThickness2; 
                }
                if (!isHeightTooSmall) 
                { 
                    childConstraint.Height = availableSize.Height - sideThickness2;
                } 

                child.Measure(childConstraint);

                desired = child.DesiredSize; 

                if (!isWidthTooSmall) 
                { 
                    desired.Width += sideThickness2;
                } 
                if (!isHeightTooSmall)
                {
                    desired.Height += sideThickness2;
                } 
            }
            else 
            { 
                desired = new Size(Math.Min(sideThickness2, availableSize.Width), Math.Min(sideThickness2, availableSize.Height));
            } 

            return desired;
        }
 
        /// 
        /// ButtonChrome computes the position of its single child inside child's Margin and calls Arrange 
        /// on the child. 
        /// 
        ///  
        /// ButtonChrome basically inflates the desired size of its one child by 4 on all four sides
        /// 
        /// Size the ContentPresenter will assume.
        protected override Size ArrangeOverride(Size finalSize) 
        {
            Rect childArrangeRect = new Rect(); 
 
            childArrangeRect.Width = Math.Max(0d, finalSize.Width - sideThickness2);
            childArrangeRect.Height = Math.Max(0d, finalSize.Height - sideThickness2); 
            childArrangeRect.X = (finalSize.Width - childArrangeRect.Width) * 0.5;
            childArrangeRect.Y = (finalSize.Height - childArrangeRect.Height) * 0.5;

            UIElement child = Child; 
            if (child != null)
            { 
                child.Arrange(childArrangeRect); 
            }
 
            return finalSize;
        }

        private bool DrawBackground(DrawingContext dc, ref Rect bounds) 
        {
            // draw actual background 
            Brush brush = Background; 
            if (brush != null)
            { 
                dc.DrawRoundedRectangle(brush, null, bounds, 3.0, 3.0);
            }

            if ((bounds.Width < 0.6) || (bounds.Height < 0.6)) 
            {
                // out of space; we're done 
                return true; 
            }
 
            return false;
        }

        private void DrawShades(DrawingContext dc, ref Rect bounds) 
        {
            // shades are inset an additional 0.3 
            bounds.Inflate(-0.3, -0.3); 

            // draw top shade 
            Brush brush = TopShade;
            if (brush != null)
            {
                dc.DrawRoundedRectangle(brush, null, new Rect(bounds.Left, bounds.Top, bounds.Width, 6.0), 3.0, 3.0); 
            }
 
            // draw bottom shade 
            brush = BottomShade;
            if (brush != null) 
            {
                dc.DrawRoundedRectangle(brush, null, new Rect(bounds.Left, bounds.Bottom - 6.0, bounds.Width, 6.0), 3.0, 3.0);
            }
 
            // draw left shade
            brush = LeftShade; 
            if (brush != null) 
            {
                dc.DrawRoundedRectangle(brush, null, new Rect(bounds.Left, bounds.Top, 6.0, bounds.Height), 3.0, 3.0); 
            }

            // draw right shade
            brush = RightShade; 
            if (brush != null)
            { 
                dc.DrawRoundedRectangle(brush, null, new Rect(bounds.Right - 6.0, bounds.Top, 6.0, bounds.Height), 3.0, 3.0); 
            }
 
            // dones with shades; outset bounds
            bounds.Inflate(0.3, 0.3);
        }
 
        private void DrawInnerHighlight(DrawingContext dc, ref Rect bounds)
        { 
            // draw inner highlight 
            Pen pen = InnerHighlight;
            if (pen != null && (bounds.Width >= (8.0 / 3.0)) && (bounds.Height >= (8.0 / 3.0))) 
            {
                dc.DrawRoundedRectangle(
                        null,
                        pen, 
                        new Rect(
                                bounds.Left + 4.0 / 3.0, 
                                bounds.Top + 4.0 / 3.0, 
                                bounds.Width - 8.0 / 3.0,
                                bounds.Height - 8.0 / 3.0), 
                        2.0,
                        2.0);
            }
        } 

        private void DrawBorder(DrawingContext dc, ref Rect bounds) 
        { 
            // draw border
            Pen borderPen = BorderPen; 
            if ((borderPen != null) && (bounds.Width >= 1.0) && (bounds.Height >= 1.0))
            {
                dc.DrawRoundedRectangle(
                        null, 
                        borderPen,
                        new Rect( 
                                bounds.Left + 0.5, 
                                bounds.Top + 0.5,
                                bounds.Width - 1.0, 
                                bounds.Height - 1.0),
                        2.0,
                        2.0);
            } 
        }
 
        ///  
        /// Render callback.
        /// Note: Assumes OuterHighlight.Thickness = 1pt and InnerHighlight.Thickness = 2pt 
        /// 
        protected override void OnRender(DrawingContext drawingContext)
        {
            Rect bounds = new Rect(0, 0, ActualWidth, ActualHeight); 

            if (DrawBackground(drawingContext, ref bounds)) 
            { 
                // Out of space, stop
                return; 
            }

            DrawShades(drawingContext, ref bounds);
            DrawInnerHighlight(drawingContext, ref bounds); 
            DrawBorder(drawingContext, ref bounds);
        } 
 
        #endregion
 
        #region Private Properties

        //
        //  This property 
        //  1. Finds the correct initial size for the _effectiveValues store on the current DependencyObject
        //  2. This is a performance optimization 
        // 
        internal override int EffectiveValuesInitialSize
        { 
            get { return 12; }
        }

        private static Pen CommonDisabledBorderPen 
        {
            get 
            { 
                if (_commonDisabledBorderPen == null)
                { 
                    lock (_resourceAccess)
                    {
                        if (_commonDisabledBorderPen == null)
                        { 
                            SolidColorBrush brush = new SolidColorBrush(Color.FromArgb(0xFF,0xC6,0xC5,0xC9));
 
                            Pen temp = new Pen(brush, 1); 
                            temp.Freeze();
 
                            // Static field must not be set until the local has been frozen
                            _commonDisabledBorderPen = temp;
                        }
                    } 
                }
                return _commonDisabledBorderPen; 
            } 
        }
 
        private Pen BorderPen
        {
            get
            { 
                if (!IsEnabled)
                    return CommonDisabledBorderPen; 
 
                Pen pen = null;
 
                Brush brush = BorderBrush;
                if (brush != null)
                {
                    if (_commonBorderPen == null)   // Common case, if non-null, avoid the lock 
                    {
                        lock (_resourceAccess)   // If non-null, lock to create the pen for thread safety 
                        { 
                            if (_commonBorderPen == null)   // Check again in case _commonBorderPen was created within the last line
                            { 
                                // Assume that the first render of Button uses the most common brush for the app.
                                // This breaks down if (a) the first Button is disabled, (b) the first Button is
                                // customized, or (c) ButtonChrome becomes more broadly used than just on Button.
                                // 
                                // If these cons sufficiently weaken the effectiveness of this cache, then we need
                                // to build a larger brush-to-pen mapping cache. 
 
                                // If the brush is not already frozen, we need to create our own
                                // copy.  Otherwise we will inadvertently freeze the user's 
                                // BorderBrush when we freeze the pen below.
                                if (!brush.IsFrozen && brush.CanFreeze)
                                {
                                    brush = brush.Clone(); 
                                    brush.Freeze();
                                } 
 
                                Pen commonPen = new Pen(brush, 1);
                                if (commonPen.CanFreeze) 
                                {
                                    // Only save frozen pens, some brushes such as VisualBrush
                                    // can not be frozen
                                    commonPen.Freeze(); 
                                    _commonBorderPen = commonPen;
                                } 
                            } 
                        }
                    } 


                    if (_commonBorderPen != null && brush == _commonBorderPen.Brush)
                    { 
                        pen = _commonBorderPen;
                    } 
                    else 
                    {
                        if (!brush.IsFrozen && brush.CanFreeze) 
                        {
                            brush = brush.Clone();
                            brush.Freeze();
                        } 

                        pen = new Pen(brush, 1); 
                        if (pen.CanFreeze) 
                        {
                            pen.Freeze(); 
                        }
                    }
                }
                return pen; 
            }
        } 
 
        private static Pen CommonOuterHighlight
        { 
            get
            {
                if (_commonOuterHighlight == null)
                { 
                    lock (_resourceAccess)
                    { 
                        if (_commonOuterHighlight == null) 
                        {
                            LinearGradientBrush brush = new LinearGradientBrush(); 
                            brush.StartPoint = new Point(0,0);
                            brush.EndPoint = new Point(0.4,1);

                            brush.GradientStops.Add(new GradientStop(Color.FromArgb(0x20,0x00,0x00,0x00), 0)); 
                            brush.GradientStops.Add(new GradientStop(Color.FromArgb(0x00,0xFF,0xFF,0xFF), 0.5));
                            brush.GradientStops.Add(new GradientStop(Color.FromArgb(0x80,0xFF,0xFF,0xFF), 1)); 
 
                            Pen temp = new Pen(brush, 1.3333333333);
                            temp.Freeze(); 

                            // Static field must not be set until the local has been frozen
                            _commonOuterHighlight = temp;
                        } 
                    }
                } 
                return _commonOuterHighlight; 
            }
        } 

        private Pen OuterHighlight
        {
            get 
            {
                if (!IsEnabled) 
                    return null; 
                return CommonOuterHighlight;
            } 
        }

        private static Pen CommonDefaultedInnerHighlight
        { 
            get
            { 
                if (_commonDefaultedInnerHighlight == null) 
                {
                    lock (_resourceAccess) 
                    {
                        if (_commonDefaultedInnerHighlight == null)
                        {
                            LinearGradientBrush brush = new LinearGradientBrush(); 
                            brush.StartPoint = new Point(0.5, 0);
                            brush.EndPoint = new Point(0.5, 1); 
 
                            brush.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xCE, 0xE7, 0xFF), 0));
                            brush.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xBC, 0xD4, 0xF6), 0.3)); 
                            brush.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0x89, 0xAD, 0xE4), 0.97));
                            brush.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0x69, 0x82, 0xEE), 1));

                            Pen temp = new Pen(brush, 2.6666666667); 
                            temp.Freeze();
 
                            // Static field must not be set until the local has been frozen 
                            _commonDefaultedInnerHighlight = temp;
                        } 
                    }
                }
                return _commonDefaultedInnerHighlight;
            } 
        }
 
 
        private static Pen CommonHoverInnerHighlight
        { 
            get
            {
                if (_commonHoverInnerHighlight == null)
                { 
                    lock (_resourceAccess)
                    { 
                        if (_commonHoverInnerHighlight == null) 
                        {
                            LinearGradientBrush brush = new LinearGradientBrush(); 
                            brush.StartPoint = new Point(0.5, 0);
                            brush.EndPoint = new Point(0.5, 1);

                            brush.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xFF, 0xF0, 0xCF), 0)); 
                            brush.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xFC, 0xD2, 0x79), 0.03));
                            brush.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xF8, 0xB7, 0x3B), 0.75)); 
                            brush.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xE5, 0x97, 0x00), 1)); 

                            Pen temp = new Pen(brush, 2.6666666667); 
                            temp.Freeze();

                            // Static field must not be set until the local has been frozen
                            _commonHoverInnerHighlight = temp; 
                        }
                    } 
                } 
                return _commonHoverInnerHighlight;
            } 
        }


        private Pen InnerHighlight 
        {
            get 
            { 
                if (!IsEnabled || RenderPressed)
                { 
                    return null;
                }
                if (RenderMouseOver)
                { 
                    return CommonHoverInnerHighlight;
                } 
                if (RenderDefaulted) 
                {
                    return CommonDefaultedInnerHighlight; 
                }
                return null;
            }
        } 

 
        private static LinearGradientBrush CommonBottomShade 
        {
            get 
            {
                if (_commonBottomShade == null)
                {
                    lock (_resourceAccess) 
                    {
                        if (_commonBottomShade == null) 
                        { 
                            LinearGradientBrush temp = new LinearGradientBrush();
                            temp.StartPoint = new Point(0.5,0); 
                            temp.EndPoint = new Point(0.5,1);

                            temp.GradientStops.Add(new GradientStop(Color.FromArgb(0x00,0xFF,0xFF,0xFF), 0.5));
                            temp.GradientStops.Add(new GradientStop(Color.FromArgb(0x35,0x59,0x2F,0x00), 1)); 
                            temp.Freeze();
 
                            _commonBottomShade = temp; 
                        }
                    } 
                }
                return _commonBottomShade;
            }
        } 

        private static LinearGradientBrush CommonPressedBottomShade 
        { 
            get
            { 
                if (_commonPressedBottomShade == null)
                {
                    lock (_resourceAccess)
                    { 
                        if (_commonPressedBottomShade == null)
                        { 
                            LinearGradientBrush temp = new LinearGradientBrush(); 
                            temp.StartPoint = new Point(0.5, 0);
                            temp.EndPoint = new Point(0.5, 1); 

                            temp.GradientStops.Add(new GradientStop(Color.FromArgb(0x00, 0xFF, 0xFF, 0xFF), 0.6));
                            temp.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xFF, 0xFF, 0xFF), 1));
                            temp.Freeze(); 

                            _commonPressedBottomShade = temp; 
                        } 
                    }
                } 
                return _commonPressedBottomShade;
            }
        }
 
        private LinearGradientBrush BottomShade
        { 
            get 
            {
                if (!IsEnabled) 
                    return null;
                if (RenderPressed)
                    return CommonPressedBottomShade;
 
                return CommonBottomShade;
            } 
        } 

        private static LinearGradientBrush CommonRightShade 
        {
            get
            {
                if (_commonRightShade == null) 
                {
                    lock (_resourceAccess) 
                    { 
                        if (_commonRightShade == null)
                        { 
                            LinearGradientBrush temp = new LinearGradientBrush();
                            temp.StartPoint = new Point(0, 0.5);
                            temp.EndPoint = new Point(1, 0.5);
 
                            temp.GradientStops.Add(new GradientStop(Color.FromArgb(0x00,0xFF,0xFF,0xFF), 0.5));
                            temp.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF,0xFF,0xFF,0xFF), 1)); 
                            temp.Freeze(); 

                            _commonRightShade = temp; 
                        }
                    }
                }
                return _commonRightShade; 
            }
        } 
 
        private LinearGradientBrush RightShade
        { 
            get
            {
                if (!IsEnabled || RenderPressed)
                    return null; 

                return CommonRightShade; 
 
            }
        } 

        private static LinearGradientBrush CommonPressedTopShade
        {
            get 
            {
                if (_commonPressedTopShade == null) 
                { 
                    lock (_resourceAccess)
                    { 
                        if (_commonPressedTopShade == null)
                        {
                            LinearGradientBrush temp = new LinearGradientBrush();
                            temp.StartPoint = new Point(0.5, 1); 
                            temp.EndPoint = new Point(0.5, 0);
 
                            temp.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF,0x97,0x8B,0x72), 1)); 
                            temp.GradientStops.Add(new GradientStop(Color.FromArgb(0x00,0xFF,0xFF,0xFF), 0.6));
                            temp.Freeze(); 

                            _commonPressedTopShade = temp;
                        }
                    } 
                }
                return _commonPressedTopShade; 
            } 
        }
 
        private LinearGradientBrush TopShade
        {
            get
            { 
                if (!IsEnabled)
                    return null; 
                if (RenderPressed) 
                    return CommonPressedTopShade;
                return null; 
            }
        }

        private static LinearGradientBrush CommonLeftShade 
        {
            get 
            { 
                if (_commonLeftShade == null)
                { 
                    lock (_resourceAccess)
                    {
                        if (_commonLeftShade == null)
                        { 
                            LinearGradientBrush temp = new LinearGradientBrush();
                            temp.StartPoint = new Point(1, 0.5); 
                            temp.EndPoint = new Point(0, 0.5); 

                            temp.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF,0xFF,0xFF,0xFF), 1)); 
                            temp.GradientStops.Add(new GradientStop(Color.FromArgb(0x00,0xFF,0xFF,0xFF), 0.5));
                            temp.Freeze();

                            _commonLeftShade = temp; 
                        }
                    } 
                } 
                return _commonLeftShade;
            } 
        }

        private static LinearGradientBrush CommonPressedLeftShade
        { 
            get
            { 
                if (_commonPressedLeftShade == null) 
                {
                    lock (_resourceAccess) 
                    {
                        if (_commonPressedLeftShade == null)
                        {
                            LinearGradientBrush temp = new LinearGradientBrush(); 
                            temp.StartPoint = new Point(1, 0.5);
                            temp.EndPoint = new Point(0, 0.5); 
 
                            temp.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF,0xAA,0x9D,0x87), 1));
                            temp.GradientStops.Add(new GradientStop(Color.FromArgb(0x00,0xFF,0xFF,0xFF), 0.6)); 
                            temp.Freeze();

                            _commonPressedLeftShade = temp;
                        } 
                    }
                } 
                return _commonPressedLeftShade; 
            }
        } 


        private LinearGradientBrush LeftShade
        { 
            get
            { 
                if (!IsEnabled) 
                    return null;
                if (RenderPressed) 
                    return CommonPressedLeftShade;
                return CommonLeftShade;
            }
        } 

        private static SolidColorBrush CommonDisabledFill 
        { 
            get
            { 
                return Brushes.White;
            }
        }
 

 
        private static LinearGradientBrush CommonPressedFill 
        {
            get 
            {
                if (_commonPressedFill == null)
                {
                    lock (_resourceAccess) 
                    {
                        if (_commonPressedFill == null) 
                        { 
                            LinearGradientBrush temp = new LinearGradientBrush();
                            temp.StartPoint = new Point(0.5, 1); 
                            temp.EndPoint = new Point(0.5, 0);

                            temp.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xFF, 0xFF, 0xFF), 0));
                            temp.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xE3, 0xEB, 0xF3), 0.5)); 
                            temp.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xD0, 0xDC, 0xEB), 0.5));
                            temp.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xA6, 0xB8, 0xCF), 1)); 
                            temp.Freeze(); 

                            _commonPressedFill = temp; 
                        }
                    }
                }
                return _commonPressedFill; 
            }
        } 
 

        private Brush Background 
        {
            get
            {
                if (!IsEnabled) 
                    return CommonDisabledFill;
                if (RenderPressed) 
                    return CommonPressedFill; 
                return Fill;
            } 
        }

        private static Pen _commonBorderPen;
        private static Pen _commonDisabledBorderPen; 

        private static Pen _commonOuterHighlight; 
 
        private static LinearGradientBrush _commonBottomShade;
 
        private static LinearGradientBrush _commonRightShade;
        private static LinearGradientBrush _commonLeftShade;

 
        private static Pen _commonDefaultedInnerHighlight;
 
        private static Pen _commonHoverInnerHighlight; 

        private static LinearGradientBrush _commonPressedBottomShade; 
        private static LinearGradientBrush _commonPressedTopShade;
        private static LinearGradientBrush _commonPressedLeftShade;

        private static LinearGradientBrush _commonPressedFill; 

        private static object _resourceAccess = new object(); 
 

        #endregion 
    }
}


// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
//---------------------------------------------------------------------------- 
// File: ButtonChrome.cs
//
// Description:
// Implementation of thick chrome for "full figured" buttons in Royale. 
//
// History: 
//  11/14/2005 - AtanasK - Cloned from Luna Blue source files. 
//
// Copyright (C) 2005 by Microsoft Corporation.  All rights reserved. 
//
//---------------------------------------------------------------------------
using System.Windows.Shapes;
using System.Windows.Controls; 
using System.Diagnostics;
using System.Threading; 
 
using System.Windows;
using System.Windows.Media; 
using MS.Internal;

using System;
 
namespace Microsoft.Windows.Themes
{ 
    ///  
    /// The ButtonChrome element
    /// This element is a theme-specific type that is used as an optimization 
    /// for a common complex rendering used in Royale
    ///
    /// 
    ///  

    // This is functionally equivalent to the following visual tree: 
    // 
    //   
    //        
    //       
    //
    //       
    // 
    //       
    //       
    //
    //       
    //       
    // 
    //        
    //        
    //
    //       
    //        
    //
    //        
    //       
    // 
    //       
    //       
    //
    //        
    //       
    // 
    //        
    //        
    //   
 
    public sealed class ButtonChrome : Decorator 
    {
 
        #region Constructors

        static ButtonChrome()
        { 
            IsEnabledProperty.OverrideMetadata(typeof(ButtonChrome), new FrameworkPropertyMetadata(true, FrameworkPropertyMetadataOptions.AffectsRender));
        } 
 
        /// 
        /// Instantiates a new instance of a ButtonChrome with no parent element. 
        /// 
        /// 
        public ButtonChrome()
        { 
        }
 
        #endregion Constructors 

        #region Dynamic Properties 


        /// 
        /// DependencyProperty for  property. 
        /// 
        public static readonly DependencyProperty FillProperty = 
                Shape.FillProperty.AddOwner( 
                        typeof(ButtonChrome),
                        new FrameworkPropertyMetadata( 
                                null,
                                FrameworkPropertyMetadataOptions.AffectsRender));

        ///  
        /// The Fill property defines the brush used to fill the border region.
        ///  
        public Brush Fill 
        {
            get { return (Brush) GetValue(FillProperty); } 
            set { SetValue(FillProperty, value); }
        }

        ///  
        /// DependencyProperty for  property.
        ///  
        public static readonly DependencyProperty BorderBrushProperty = 
                Border.BorderBrushProperty.AddOwner(
                        typeof(ButtonChrome), 
                        new FrameworkPropertyMetadata(
                                null,
                                FrameworkPropertyMetadataOptions.AffectsRender));
 
        /// 
        /// The BorderBrush property defines the brush used to fill the border region. 
        ///  
        public Brush BorderBrush
        { 
            get { return (Brush) GetValue(BorderBrushProperty); }
            set { SetValue(BorderBrushProperty, value); }
        }
 
        /// 
        /// DependencyProperty for  property. 
        ///  
        public static readonly DependencyProperty RenderDefaultedProperty =
                 DependencyProperty.Register("RenderDefaulted", 
                         typeof(bool),
                         typeof(ButtonChrome),
                         new FrameworkPropertyMetadata(
                                false, 
                                FrameworkPropertyMetadataOptions.AffectsRender));
 
        ///  
        /// When true the chrome renders with a defaulted look.
        ///  
        public bool RenderDefaulted
        {
            get { return (bool) GetValue(RenderDefaultedProperty); }
            set { SetValue(RenderDefaultedProperty, value); } 
        }
 
 
        /// 
        /// DependencyProperty for  property. 
        /// 
        public static readonly DependencyProperty RenderMouseOverProperty =
                 DependencyProperty.Register("RenderMouseOver",
                         typeof(bool), 
                         typeof(ButtonChrome),
                         new FrameworkPropertyMetadata( 
                                false, 
                                FrameworkPropertyMetadataOptions.AffectsRender));
 
        /// 
        /// When true the chrome renders with a mouse over look.
        /// 
        public bool RenderMouseOver 
        {
            get { return (bool) GetValue(RenderMouseOverProperty); } 
            set { SetValue(RenderMouseOverProperty, value); } 
        }
 

        /// 
        /// DependencyProperty for  property.
        ///  
        public static readonly DependencyProperty RenderPressedProperty =
                 DependencyProperty.Register("RenderPressed", 
                         typeof(bool), 
                         typeof(ButtonChrome),
                         new FrameworkPropertyMetadata( 
                                false,
                                FrameworkPropertyMetadataOptions.AffectsRender));

        ///  
        /// When true the chrome renders with a pressed look.
        ///  
        public bool RenderPressed 
        {
            get { return (bool) GetValue(RenderPressedProperty); } 
            set { SetValue(RenderPressedProperty, value); }
        }

        #endregion Dynamic Properties 

        #region Protected Methods 
 
        private const double sideThickness = 4.0;
        private const double sideThickness2 = 2 * sideThickness; 

        /// 
        /// Updates DesiredSize of the ButtonChrome.  Called by parent UIElement.  This is the first pass of layout.
        ///  
        /// 
        /// ButtonChrome basically inflates the desired size of its one child by 4 on all four sides 
        ///  
        /// Available size is an "upper limit" that the return value should not exceed.
        /// The ButtonChrome's desired size. 
        protected override Size MeasureOverride(Size availableSize)
        {
            Size desired;
            UIElement child = Child; 
            if (child != null)
            { 
                Size childConstraint = new Size(); 
                bool isWidthTooSmall = (availableSize.Width < sideThickness2);
                bool isHeightTooSmall = (availableSize.Height < sideThickness2); 

                if (!isWidthTooSmall)
                {
                    childConstraint.Width = availableSize.Width - sideThickness2; 
                }
                if (!isHeightTooSmall) 
                { 
                    childConstraint.Height = availableSize.Height - sideThickness2;
                } 

                child.Measure(childConstraint);

                desired = child.DesiredSize; 

                if (!isWidthTooSmall) 
                { 
                    desired.Width += sideThickness2;
                } 
                if (!isHeightTooSmall)
                {
                    desired.Height += sideThickness2;
                } 
            }
            else 
            { 
                desired = new Size(Math.Min(sideThickness2, availableSize.Width), Math.Min(sideThickness2, availableSize.Height));
            } 

            return desired;
        }
 
        /// 
        /// ButtonChrome computes the position of its single child inside child's Margin and calls Arrange 
        /// on the child. 
        /// 
        ///  
        /// ButtonChrome basically inflates the desired size of its one child by 4 on all four sides
        /// 
        /// Size the ContentPresenter will assume.
        protected override Size ArrangeOverride(Size finalSize) 
        {
            Rect childArrangeRect = new Rect(); 
 
            childArrangeRect.Width = Math.Max(0d, finalSize.Width - sideThickness2);
            childArrangeRect.Height = Math.Max(0d, finalSize.Height - sideThickness2); 
            childArrangeRect.X = (finalSize.Width - childArrangeRect.Width) * 0.5;
            childArrangeRect.Y = (finalSize.Height - childArrangeRect.Height) * 0.5;

            UIElement child = Child; 
            if (child != null)
            { 
                child.Arrange(childArrangeRect); 
            }
 
            return finalSize;
        }

        private bool DrawBackground(DrawingContext dc, ref Rect bounds) 
        {
            // draw actual background 
            Brush brush = Background; 
            if (brush != null)
            { 
                dc.DrawRoundedRectangle(brush, null, bounds, 3.0, 3.0);
            }

            if ((bounds.Width < 0.6) || (bounds.Height < 0.6)) 
            {
                // out of space; we're done 
                return true; 
            }
 
            return false;
        }

        private void DrawShades(DrawingContext dc, ref Rect bounds) 
        {
            // shades are inset an additional 0.3 
            bounds.Inflate(-0.3, -0.3); 

            // draw top shade 
            Brush brush = TopShade;
            if (brush != null)
            {
                dc.DrawRoundedRectangle(brush, null, new Rect(bounds.Left, bounds.Top, bounds.Width, 6.0), 3.0, 3.0); 
            }
 
            // draw bottom shade 
            brush = BottomShade;
            if (brush != null) 
            {
                dc.DrawRoundedRectangle(brush, null, new Rect(bounds.Left, bounds.Bottom - 6.0, bounds.Width, 6.0), 3.0, 3.0);
            }
 
            // draw left shade
            brush = LeftShade; 
            if (brush != null) 
            {
                dc.DrawRoundedRectangle(brush, null, new Rect(bounds.Left, bounds.Top, 6.0, bounds.Height), 3.0, 3.0); 
            }

            // draw right shade
            brush = RightShade; 
            if (brush != null)
            { 
                dc.DrawRoundedRectangle(brush, null, new Rect(bounds.Right - 6.0, bounds.Top, 6.0, bounds.Height), 3.0, 3.0); 
            }
 
            // dones with shades; outset bounds
            bounds.Inflate(0.3, 0.3);
        }
 
        private void DrawInnerHighlight(DrawingContext dc, ref Rect bounds)
        { 
            // draw inner highlight 
            Pen pen = InnerHighlight;
            if (pen != null && (bounds.Width >= (8.0 / 3.0)) && (bounds.Height >= (8.0 / 3.0))) 
            {
                dc.DrawRoundedRectangle(
                        null,
                        pen, 
                        new Rect(
                                bounds.Left + 4.0 / 3.0, 
                                bounds.Top + 4.0 / 3.0, 
                                bounds.Width - 8.0 / 3.0,
                                bounds.Height - 8.0 / 3.0), 
                        2.0,
                        2.0);
            }
        } 

        private void DrawBorder(DrawingContext dc, ref Rect bounds) 
        { 
            // draw border
            Pen borderPen = BorderPen; 
            if ((borderPen != null) && (bounds.Width >= 1.0) && (bounds.Height >= 1.0))
            {
                dc.DrawRoundedRectangle(
                        null, 
                        borderPen,
                        new Rect( 
                                bounds.Left + 0.5, 
                                bounds.Top + 0.5,
                                bounds.Width - 1.0, 
                                bounds.Height - 1.0),
                        2.0,
                        2.0);
            } 
        }
 
        ///  
        /// Render callback.
        /// Note: Assumes OuterHighlight.Thickness = 1pt and InnerHighlight.Thickness = 2pt 
        /// 
        protected override void OnRender(DrawingContext drawingContext)
        {
            Rect bounds = new Rect(0, 0, ActualWidth, ActualHeight); 

            if (DrawBackground(drawingContext, ref bounds)) 
            { 
                // Out of space, stop
                return; 
            }

            DrawShades(drawingContext, ref bounds);
            DrawInnerHighlight(drawingContext, ref bounds); 
            DrawBorder(drawingContext, ref bounds);
        } 
 
        #endregion
 
        #region Private Properties

        //
        //  This property 
        //  1. Finds the correct initial size for the _effectiveValues store on the current DependencyObject
        //  2. This is a performance optimization 
        // 
        internal override int EffectiveValuesInitialSize
        { 
            get { return 12; }
        }

        private static Pen CommonDisabledBorderPen 
        {
            get 
            { 
                if (_commonDisabledBorderPen == null)
                { 
                    lock (_resourceAccess)
                    {
                        if (_commonDisabledBorderPen == null)
                        { 
                            SolidColorBrush brush = new SolidColorBrush(Color.FromArgb(0xFF,0xC6,0xC5,0xC9));
 
                            Pen temp = new Pen(brush, 1); 
                            temp.Freeze();
 
                            // Static field must not be set until the local has been frozen
                            _commonDisabledBorderPen = temp;
                        }
                    } 
                }
                return _commonDisabledBorderPen; 
            } 
        }
 
        private Pen BorderPen
        {
            get
            { 
                if (!IsEnabled)
                    return CommonDisabledBorderPen; 
 
                Pen pen = null;
 
                Brush brush = BorderBrush;
                if (brush != null)
                {
                    if (_commonBorderPen == null)   // Common case, if non-null, avoid the lock 
                    {
                        lock (_resourceAccess)   // If non-null, lock to create the pen for thread safety 
                        { 
                            if (_commonBorderPen == null)   // Check again in case _commonBorderPen was created within the last line
                            { 
                                // Assume that the first render of Button uses the most common brush for the app.
                                // This breaks down if (a) the first Button is disabled, (b) the first Button is
                                // customized, or (c) ButtonChrome becomes more broadly used than just on Button.
                                // 
                                // If these cons sufficiently weaken the effectiveness of this cache, then we need
                                // to build a larger brush-to-pen mapping cache. 
 
                                // If the brush is not already frozen, we need to create our own
                                // copy.  Otherwise we will inadvertently freeze the user's 
                                // BorderBrush when we freeze the pen below.
                                if (!brush.IsFrozen && brush.CanFreeze)
                                {
                                    brush = brush.Clone(); 
                                    brush.Freeze();
                                } 
 
                                Pen commonPen = new Pen(brush, 1);
                                if (commonPen.CanFreeze) 
                                {
                                    // Only save frozen pens, some brushes such as VisualBrush
                                    // can not be frozen
                                    commonPen.Freeze(); 
                                    _commonBorderPen = commonPen;
                                } 
                            } 
                        }
                    } 


                    if (_commonBorderPen != null && brush == _commonBorderPen.Brush)
                    { 
                        pen = _commonBorderPen;
                    } 
                    else 
                    {
                        if (!brush.IsFrozen && brush.CanFreeze) 
                        {
                            brush = brush.Clone();
                            brush.Freeze();
                        } 

                        pen = new Pen(brush, 1); 
                        if (pen.CanFreeze) 
                        {
                            pen.Freeze(); 
                        }
                    }
                }
                return pen; 
            }
        } 
 
        private static Pen CommonOuterHighlight
        { 
            get
            {
                if (_commonOuterHighlight == null)
                { 
                    lock (_resourceAccess)
                    { 
                        if (_commonOuterHighlight == null) 
                        {
                            LinearGradientBrush brush = new LinearGradientBrush(); 
                            brush.StartPoint = new Point(0,0);
                            brush.EndPoint = new Point(0.4,1);

                            brush.GradientStops.Add(new GradientStop(Color.FromArgb(0x20,0x00,0x00,0x00), 0)); 
                            brush.GradientStops.Add(new GradientStop(Color.FromArgb(0x00,0xFF,0xFF,0xFF), 0.5));
                            brush.GradientStops.Add(new GradientStop(Color.FromArgb(0x80,0xFF,0xFF,0xFF), 1)); 
 
                            Pen temp = new Pen(brush, 1.3333333333);
                            temp.Freeze(); 

                            // Static field must not be set until the local has been frozen
                            _commonOuterHighlight = temp;
                        } 
                    }
                } 
                return _commonOuterHighlight; 
            }
        } 

        private Pen OuterHighlight
        {
            get 
            {
                if (!IsEnabled) 
                    return null; 
                return CommonOuterHighlight;
            } 
        }

        private static Pen CommonDefaultedInnerHighlight
        { 
            get
            { 
                if (_commonDefaultedInnerHighlight == null) 
                {
                    lock (_resourceAccess) 
                    {
                        if (_commonDefaultedInnerHighlight == null)
                        {
                            LinearGradientBrush brush = new LinearGradientBrush(); 
                            brush.StartPoint = new Point(0.5, 0);
                            brush.EndPoint = new Point(0.5, 1); 
 
                            brush.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xCE, 0xE7, 0xFF), 0));
                            brush.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xBC, 0xD4, 0xF6), 0.3)); 
                            brush.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0x89, 0xAD, 0xE4), 0.97));
                            brush.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0x69, 0x82, 0xEE), 1));

                            Pen temp = new Pen(brush, 2.6666666667); 
                            temp.Freeze();
 
                            // Static field must not be set until the local has been frozen 
                            _commonDefaultedInnerHighlight = temp;
                        } 
                    }
                }
                return _commonDefaultedInnerHighlight;
            } 
        }
 
 
        private static Pen CommonHoverInnerHighlight
        { 
            get
            {
                if (_commonHoverInnerHighlight == null)
                { 
                    lock (_resourceAccess)
                    { 
                        if (_commonHoverInnerHighlight == null) 
                        {
                            LinearGradientBrush brush = new LinearGradientBrush(); 
                            brush.StartPoint = new Point(0.5, 0);
                            brush.EndPoint = new Point(0.5, 1);

                            brush.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xFF, 0xF0, 0xCF), 0)); 
                            brush.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xFC, 0xD2, 0x79), 0.03));
                            brush.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xF8, 0xB7, 0x3B), 0.75)); 
                            brush.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xE5, 0x97, 0x00), 1)); 

                            Pen temp = new Pen(brush, 2.6666666667); 
                            temp.Freeze();

                            // Static field must not be set until the local has been frozen
                            _commonHoverInnerHighlight = temp; 
                        }
                    } 
                } 
                return _commonHoverInnerHighlight;
            } 
        }


        private Pen InnerHighlight 
        {
            get 
            { 
                if (!IsEnabled || RenderPressed)
                { 
                    return null;
                }
                if (RenderMouseOver)
                { 
                    return CommonHoverInnerHighlight;
                } 
                if (RenderDefaulted) 
                {
                    return CommonDefaultedInnerHighlight; 
                }
                return null;
            }
        } 

 
        private static LinearGradientBrush CommonBottomShade 
        {
            get 
            {
                if (_commonBottomShade == null)
                {
                    lock (_resourceAccess) 
                    {
                        if (_commonBottomShade == null) 
                        { 
                            LinearGradientBrush temp = new LinearGradientBrush();
                            temp.StartPoint = new Point(0.5,0); 
                            temp.EndPoint = new Point(0.5,1);

                            temp.GradientStops.Add(new GradientStop(Color.FromArgb(0x00,0xFF,0xFF,0xFF), 0.5));
                            temp.GradientStops.Add(new GradientStop(Color.FromArgb(0x35,0x59,0x2F,0x00), 1)); 
                            temp.Freeze();
 
                            _commonBottomShade = temp; 
                        }
                    } 
                }
                return _commonBottomShade;
            }
        } 

        private static LinearGradientBrush CommonPressedBottomShade 
        { 
            get
            { 
                if (_commonPressedBottomShade == null)
                {
                    lock (_resourceAccess)
                    { 
                        if (_commonPressedBottomShade == null)
                        { 
                            LinearGradientBrush temp = new LinearGradientBrush(); 
                            temp.StartPoint = new Point(0.5, 0);
                            temp.EndPoint = new Point(0.5, 1); 

                            temp.GradientStops.Add(new GradientStop(Color.FromArgb(0x00, 0xFF, 0xFF, 0xFF), 0.6));
                            temp.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xFF, 0xFF, 0xFF), 1));
                            temp.Freeze(); 

                            _commonPressedBottomShade = temp; 
                        } 
                    }
                } 
                return _commonPressedBottomShade;
            }
        }
 
        private LinearGradientBrush BottomShade
        { 
            get 
            {
                if (!IsEnabled) 
                    return null;
                if (RenderPressed)
                    return CommonPressedBottomShade;
 
                return CommonBottomShade;
            } 
        } 

        private static LinearGradientBrush CommonRightShade 
        {
            get
            {
                if (_commonRightShade == null) 
                {
                    lock (_resourceAccess) 
                    { 
                        if (_commonRightShade == null)
                        { 
                            LinearGradientBrush temp = new LinearGradientBrush();
                            temp.StartPoint = new Point(0, 0.5);
                            temp.EndPoint = new Point(1, 0.5);
 
                            temp.GradientStops.Add(new GradientStop(Color.FromArgb(0x00,0xFF,0xFF,0xFF), 0.5));
                            temp.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF,0xFF,0xFF,0xFF), 1)); 
                            temp.Freeze(); 

                            _commonRightShade = temp; 
                        }
                    }
                }
                return _commonRightShade; 
            }
        } 
 
        private LinearGradientBrush RightShade
        { 
            get
            {
                if (!IsEnabled || RenderPressed)
                    return null; 

                return CommonRightShade; 
 
            }
        } 

        private static LinearGradientBrush CommonPressedTopShade
        {
            get 
            {
                if (_commonPressedTopShade == null) 
                { 
                    lock (_resourceAccess)
                    { 
                        if (_commonPressedTopShade == null)
                        {
                            LinearGradientBrush temp = new LinearGradientBrush();
                            temp.StartPoint = new Point(0.5, 1); 
                            temp.EndPoint = new Point(0.5, 0);
 
                            temp.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF,0x97,0x8B,0x72), 1)); 
                            temp.GradientStops.Add(new GradientStop(Color.FromArgb(0x00,0xFF,0xFF,0xFF), 0.6));
                            temp.Freeze(); 

                            _commonPressedTopShade = temp;
                        }
                    } 
                }
                return _commonPressedTopShade; 
            } 
        }
 
        private LinearGradientBrush TopShade
        {
            get
            { 
                if (!IsEnabled)
                    return null; 
                if (RenderPressed) 
                    return CommonPressedTopShade;
                return null; 
            }
        }

        private static LinearGradientBrush CommonLeftShade 
        {
            get 
            { 
                if (_commonLeftShade == null)
                { 
                    lock (_resourceAccess)
                    {
                        if (_commonLeftShade == null)
                        { 
                            LinearGradientBrush temp = new LinearGradientBrush();
                            temp.StartPoint = new Point(1, 0.5); 
                            temp.EndPoint = new Point(0, 0.5); 

                            temp.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF,0xFF,0xFF,0xFF), 1)); 
                            temp.GradientStops.Add(new GradientStop(Color.FromArgb(0x00,0xFF,0xFF,0xFF), 0.5));
                            temp.Freeze();

                            _commonLeftShade = temp; 
                        }
                    } 
                } 
                return _commonLeftShade;
            } 
        }

        private static LinearGradientBrush CommonPressedLeftShade
        { 
            get
            { 
                if (_commonPressedLeftShade == null) 
                {
                    lock (_resourceAccess) 
                    {
                        if (_commonPressedLeftShade == null)
                        {
                            LinearGradientBrush temp = new LinearGradientBrush(); 
                            temp.StartPoint = new Point(1, 0.5);
                            temp.EndPoint = new Point(0, 0.5); 
 
                            temp.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF,0xAA,0x9D,0x87), 1));
                            temp.GradientStops.Add(new GradientStop(Color.FromArgb(0x00,0xFF,0xFF,0xFF), 0.6)); 
                            temp.Freeze();

                            _commonPressedLeftShade = temp;
                        } 
                    }
                } 
                return _commonPressedLeftShade; 
            }
        } 


        private LinearGradientBrush LeftShade
        { 
            get
            { 
                if (!IsEnabled) 
                    return null;
                if (RenderPressed) 
                    return CommonPressedLeftShade;
                return CommonLeftShade;
            }
        } 

        private static SolidColorBrush CommonDisabledFill 
        { 
            get
            { 
                return Brushes.White;
            }
        }
 

 
        private static LinearGradientBrush CommonPressedFill 
        {
            get 
            {
                if (_commonPressedFill == null)
                {
                    lock (_resourceAccess) 
                    {
                        if (_commonPressedFill == null) 
                        { 
                            LinearGradientBrush temp = new LinearGradientBrush();
                            temp.StartPoint = new Point(0.5, 1); 
                            temp.EndPoint = new Point(0.5, 0);

                            temp.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xFF, 0xFF, 0xFF), 0));
                            temp.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xE3, 0xEB, 0xF3), 0.5)); 
                            temp.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xD0, 0xDC, 0xEB), 0.5));
                            temp.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xA6, 0xB8, 0xCF), 1)); 
                            temp.Freeze(); 

                            _commonPressedFill = temp; 
                        }
                    }
                }
                return _commonPressedFill; 
            }
        } 
 

        private Brush Background 
        {
            get
            {
                if (!IsEnabled) 
                    return CommonDisabledFill;
                if (RenderPressed) 
                    return CommonPressedFill; 
                return Fill;
            } 
        }

        private static Pen _commonBorderPen;
        private static Pen _commonDisabledBorderPen; 

        private static Pen _commonOuterHighlight; 
 
        private static LinearGradientBrush _commonBottomShade;
 
        private static LinearGradientBrush _commonRightShade;
        private static LinearGradientBrush _commonLeftShade;

 
        private static Pen _commonDefaultedInnerHighlight;
 
        private static Pen _commonHoverInnerHighlight; 

        private static LinearGradientBrush _commonPressedBottomShade; 
        private static LinearGradientBrush _commonPressedTopShade;
        private static LinearGradientBrush _commonPressedLeftShade;

        private static LinearGradientBrush _commonPressedFill; 

        private static object _resourceAccess = new object(); 
 

        #endregion 
    }
}


// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
                        

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