VisualBrush.cs source code in C# .NET

Source code for the .NET framework in C#

                        

Code:

/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / Orcas / QFE / wpf / src / Core / CSharp / System / Windows / Media / Generated / VisualBrush.cs / 1 / VisualBrush.cs

                            //---------------------------------------------------------------------------- 
//
// 
//    Copyright (C) Microsoft Corporation.  All rights reserved.
//  
//
// This file was generated, please do not edit it directly. 
// 
// Please see http://wiki/default.aspx/Microsoft.Projects.Avalon/MilCodeGen.html for more information.
// 
//---------------------------------------------------------------------------

using MS.Internal;
using MS.Internal.KnownBoxes; 
using MS.Internal.Collections;
using MS.Internal.PresentationCore; 
using MS.Utility; 
using System;
using System.Collections; 
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.Globalization; 
using System.Reflection;
using System.Runtime.InteropServices; 
using System.ComponentModel.Design.Serialization; 
using System.Text;
using System.Windows; 
using System.Windows.Media;
using System.Windows.Media.Effects;
using System.Windows.Media.Media3D;
using System.Windows.Media.Animation; 
using System.Windows.Media.Composition;
using System.Windows.Media.Imaging; 
using System.Windows.Markup; 
using System.Windows.Media.Converters;
using System.Security; 
using System.Security.Permissions;
using SR=MS.Internal.PresentationCore.SR;
using SRID=MS.Internal.PresentationCore.SRID;
// These types are aliased to match the unamanaged names used in interop 
using BOOL = System.UInt32;
using WORD = System.UInt16; 
using Float = System.Single; 

namespace System.Windows.Media 
{


 
    sealed partial class VisualBrush : TileBrush
    { 
        //----------------------------------------------------- 
        //
        //  Public Methods 
        //
        //-----------------------------------------------------

        #region Public Methods 

        ///  
        ///     Shadows inherited Clone() with a strongly typed 
        ///     version for convenience.
        ///  
        public new VisualBrush Clone()
        {
            return (VisualBrush)base.Clone();
        } 

        ///  
        ///     Shadows inherited CloneCurrentValue() with a strongly typed 
        ///     version for convenience.
        ///  
        public new VisualBrush CloneCurrentValue()
        {
            return (VisualBrush)base.CloneCurrentValue();
        } 

 
 

        #endregion Public Methods 

        //------------------------------------------------------
        //
        //  Public Properties 
        //
        //----------------------------------------------------- 
 
        private static void VisualPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        { 
            VisualBrush target = ((VisualBrush) d);


            Visual oldV = (Visual) e.OldValue; 

            // 
            // If the Visual required layout but it is changed before we do Layout 
            // on that Visual, then we dont want the async LayoutCallback method to run,
            // nor do we want the LayoutUpdated handler to run. So we abort/remove them. 
            //
            if (target._pendingLayout)
            {
                // 
                // Visual has to be a UIElement since _pendingLayout flag is
                // true only if we added the LayoutUpdated handler which can 
                // only be done on UIElement. 
                //
                UIElement element = (UIElement)oldV; 
                Debug.Assert(element != null);
                element.LayoutUpdated -= target.OnLayoutUpdated;

                Debug.Assert(target._DispatcherLayoutResult != null); 
                Debug.Assert(target._DispatcherLayoutResult.Status == System.Windows.Threading.DispatcherOperationStatus.Pending);
                bool abortStatus = target._DispatcherLayoutResult.Abort(); 
                Debug.Assert(abortStatus); 

                target._pendingLayout = false; 
            }

            Visual newV = (Visual) e.NewValue;
            System.Windows.Threading.Dispatcher dispatcher = target.Dispatcher; 

            if (dispatcher != null) 
            { 
                DUCE.IResource targetResource = (DUCE.IResource)target;
                using (CompositionEngineLock.Acquire()) 
                {
                    int channelCount = targetResource.GetChannelCount();

                    for (int channelIndex = 0; channelIndex < channelCount; channelIndex++) 
                    {
                        DUCE.Channel channel = targetResource.GetChannel(channelIndex); 
                        Debug.Assert(!channel.IsOutOfBandChannel); 
                        Debug.Assert(!targetResource.GetHandle(channel).IsNull);
                        target.ReleaseResource(oldV,channel); 
                        target.AddRefResource(newV,channel);
                    }
                }
            } 

            target.PropertyChanged(VisualProperty); 
        } 
        private static void AutoLayoutContentPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        { 
            VisualBrush target = ((VisualBrush) d);


            target.PropertyChanged(AutoLayoutContentProperty); 
        }
 
 
        #region Public Properties
 
        /// 
        ///     Visual - Visual.  Default value is null.
        /// 
        public Visual Visual 
        {
            get 
            { 
                return (Visual) GetValue(VisualProperty);
            } 
            set
            {
                SetValueInternal(VisualProperty, value);
            } 
        }
 
        ///  
        ///     AutoLayoutContent - bool.  Default value is true.
        ///     If this property is true, this Brush will run layout on the contents of this Brush 
        ///     if the Visual is a non-parented UIElement.
        /// 
        public bool AutoLayoutContent
        { 
            get
            { 
                return (bool) GetValue(AutoLayoutContentProperty); 
            }
            set 
            {
                SetValueInternal(AutoLayoutContentProperty, BooleanBoxes.Box(value));
            }
        } 

        #endregion Public Properties 
 
        //------------------------------------------------------
        // 
        //  Protected Methods
        //
        //------------------------------------------------------
 
        #region Protected Methods
 
        ///  
        /// Implementation of Freezable.CreateInstanceCore.
        ///  
        /// The new Freezable.
        protected override Freezable CreateInstanceCore()
        {
            return new VisualBrush(); 
        }
 
 

        #endregion ProtectedMethods 

        //-----------------------------------------------------
        //
        //  Internal Methods 
        //
        //------------------------------------------------------ 
 
        #region Internal Methods
 
        /// 
        ///     Critical: This code calls into an unsafe code block
        ///     TreatAsSafe: This code does not return any critical data.It is ok to expose
        ///     Channels are safe to call into and do not go cross domain and cross process 
        /// 
        [SecurityCritical,SecurityTreatAsSafe] 
        internal override void UpdateResource(DUCE.Channel channel, bool skipOnChannelCheck) 
        {
            // If we're told we can skip the channel check, then we must be on channel 
            Debug.Assert(!skipOnChannelCheck || _duceResource.IsOnChannel(channel));

            if (skipOnChannelCheck || _duceResource.IsOnChannel(channel))
            { 
                base.UpdateResource(channel, skipOnChannelCheck);
 
                // Read values of properties into local variables 
                Transform vTransform = Transform;
                Transform vRelativeTransform = RelativeTransform; 
                Visual vVisual = Visual;

                // Obtain handles for properties that implement DUCE.IResource
                DUCE.ResourceHandle hTransform; 
                if (vTransform == null ||
                    Object.ReferenceEquals(vTransform, Transform.Identity) 
                    ) 
                {
                    hTransform = DUCE.ResourceHandle.Null; 
                }
                else
                {
                    hTransform = ((DUCE.IResource)vTransform).GetHandle(channel); 
                }
                DUCE.ResourceHandle hRelativeTransform; 
                if (vRelativeTransform == null || 
                    Object.ReferenceEquals(vRelativeTransform, Transform.Identity)
                    ) 
                {
                    hRelativeTransform = DUCE.ResourceHandle.Null;
                }
                else 
                {
                    hRelativeTransform = ((DUCE.IResource)vRelativeTransform).GetHandle(channel); 
                } 

                // Obtain handles for properties that implement DUCE.IResource 
                DUCE.ResourceHandle  hVisual = vVisual != null ? ((DUCE.IResource)vVisual).GetHandle(channel) : DUCE.ResourceHandle.Null;

                // Obtain handles for animated properties
                DUCE.ResourceHandle hOpacityAnimations = GetAnimationResourceHandle(OpacityProperty, channel); 
                DUCE.ResourceHandle hViewportAnimations = GetAnimationResourceHandle(ViewportProperty, channel);
                DUCE.ResourceHandle hViewboxAnimations = GetAnimationResourceHandle(ViewboxProperty, channel); 
 
                // Pack & send command packet
                DUCE.MILCMD_VISUALBRUSH data; 
                unsafe
                {
                    data.Type = MILCMD.MilCmdVisualBrush;
                    data.Handle = _duceResource.GetHandle(channel); 
                    if (hOpacityAnimations.IsNull)
                    { 
                        data.Opacity = Opacity; 
                    }
                    data.hOpacityAnimations = hOpacityAnimations; 
                    data.hTransform = hTransform;
                    data.hRelativeTransform = hRelativeTransform;
                    data.ViewportUnits = ViewportUnits;
                    data.ViewboxUnits = ViewboxUnits; 
                    if (hViewportAnimations.IsNull)
                    { 
                        data.Viewport = Viewport; 
                    }
                    data.hViewportAnimations = hViewportAnimations; 
                    if (hViewboxAnimations.IsNull)
                    {
                        data.Viewbox = Viewbox;
                    } 
                    data.hViewboxAnimations = hViewboxAnimations;
                    data.Stretch = Stretch; 
                    data.TileMode = TileMode; 
                    data.AlignmentX = AlignmentX;
                    data.AlignmentY = AlignmentY; 
                    data.CachingHint = (CachingHint)GetValue(RenderOptions.CachingHintProperty);
                    data.CacheInvalidationThresholdMinimum = (double)GetValue(RenderOptions.CacheInvalidationThresholdMinimumProperty);
                    data.CacheInvalidationThresholdMaximum = (double)GetValue(RenderOptions.CacheInvalidationThresholdMaximumProperty);
                    data.hVisual = hVisual; 

                    // Send packed command structure 
                    channel.SendCommand( 
                        (byte*)&data,
                        sizeof(DUCE.MILCMD_VISUALBRUSH)); 
                }
            }
        }
        internal override DUCE.ResourceHandle AddRefOnChannelCore(DUCE.Channel channel) 
        {
 
                if (_duceResource.CreateOrAddRefOnChannel(channel, System.Windows.Media.Composition.DUCE.ResourceType.TYPE_VISUALBRUSH)) 
                {
                    Transform vTransform = Transform; 
                    if (vTransform != null) ((DUCE.IResource)vTransform).AddRefOnChannel(channel);
                    Transform vRelativeTransform = RelativeTransform;
                    if (vRelativeTransform != null) ((DUCE.IResource)vRelativeTransform).AddRefOnChannel(channel);
                    Visual vVisual = Visual; 
                    if (vVisual != null) vVisual.AddRefOnChannelForVisualBrush(this, channel);
                    AddRefOnChannelAnimations(channel); 
 

                    UpdateResource(channel, true /* skip "on channel" check - we already know that we're on channel */ ); 
                }

                return _duceResource.GetHandle(channel);
 
        }
        internal override void ReleaseOnChannelCore(DUCE.Channel channel) 
        { 

                Debug.Assert(_duceResource.IsOnChannel(channel)); 

                if (_duceResource.ReleaseOnChannel(channel))
                {
                    Transform vTransform = Transform; 
                    if (vTransform != null) ((DUCE.IResource)vTransform).ReleaseOnChannel(channel);
                    Transform vRelativeTransform = RelativeTransform; 
                    if (vRelativeTransform != null) ((DUCE.IResource)vRelativeTransform).ReleaseOnChannel(channel); 
                    Visual vVisual = Visual;
                    if (vVisual != null) vVisual.ReleaseOnChannelForVisualBrush(this, channel); 
                    ReleaseOnChannelAnimations(channel);

                }
 
        }
        internal override DUCE.ResourceHandle GetHandleCore(DUCE.Channel channel) 
        { 
            // Note that we are in a lock here already.
            return _duceResource.GetHandle(channel); 
        }
        internal override int GetChannelCountCore()
        {
            // must already be in composition lock here 
            return _duceResource.GetChannelCount();
        } 
        internal override DUCE.Channel GetChannelCore(int index) 
        {
            // Note that we are in a lock here already. 
            return _duceResource.GetChannel(index);
        }

 
        #endregion Internal Methods
 
        //----------------------------------------------------- 
        //
        //  Internal Properties 
        //
        //-----------------------------------------------------

        #region Internal Properties 

        // 
        //  This property finds the correct initial size for the _effectiveValues store on the 
        //  current DependencyObject as a performance optimization
        // 
        //  This includes:
        //    Visual
        //
        internal override int EffectiveValuesInitialSize 
        {
            get 
            { 
                return 1;
            } 
        }


 
        #endregion Internal Properties
 
        //----------------------------------------------------- 
        //
        //  Dependency Properties 
        //
        //------------------------------------------------------

        #region Dependency Properties 

        ///  
        ///     The DependencyProperty for the VisualBrush.Visual property. 
        /// 
        public static readonly DependencyProperty VisualProperty; 
        /// 
        ///     The DependencyProperty for the VisualBrush.AutoLayoutContent property.
        /// 
        public static readonly DependencyProperty AutoLayoutContentProperty; 

        #endregion Dependency Properties 
 
        //-----------------------------------------------------
        // 
        //  Internal Fields
        //
        //------------------------------------------------------
 
        #region Internal Fields
 
 

        internal System.Windows.Media.Composition.DUCE.MultiChannelResource _duceResource = new System.Windows.Media.Composition.DUCE.MultiChannelResource(); 

        internal const bool c_AutoLayoutContent = true;

        #endregion Internal Fields 

 
 
        #region Constructors
 
        //------------------------------------------------------
        //
        //  Constructors
        // 
        //-----------------------------------------------------
 
        static VisualBrush() 
        {
            // We check our static default fields which are of type Freezable 
            // to make sure that they are not mutable, otherwise we will throw
            // if these get touched by more than one thread in the lifetime
            // of your app.  (Windows OS Bug #947272)
            // 

 
            // Initializations 
            Type typeofThis = typeof(VisualBrush);
            VisualProperty = 
                  RegisterProperty("Visual",
                                   typeof(Visual),
                                   typeofThis,
                                   null, 
                                   new PropertyChangedCallback(VisualPropertyChanged),
                                   null, 
                                   /* isIndependentlyAnimated  = */ false, 
                                   /* coerceValueCallback */ null);
            AutoLayoutContentProperty = 
                  RegisterProperty("AutoLayoutContent",
                                   typeof(bool),
                                   typeofThis,
                                   true, 
                                   new PropertyChangedCallback(AutoLayoutContentPropertyChanged),
                                   null, 
                                   /* isIndependentlyAnimated  = */ false, 
                                   /* coerceValueCallback */ null);
        } 



        #endregion Constructors 

    } 
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
//---------------------------------------------------------------------------- 
//
// 
//    Copyright (C) Microsoft Corporation.  All rights reserved.
//  
//
// This file was generated, please do not edit it directly. 
// 
// Please see http://wiki/default.aspx/Microsoft.Projects.Avalon/MilCodeGen.html for more information.
// 
//---------------------------------------------------------------------------

using MS.Internal;
using MS.Internal.KnownBoxes; 
using MS.Internal.Collections;
using MS.Internal.PresentationCore; 
using MS.Utility; 
using System;
using System.Collections; 
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.Globalization; 
using System.Reflection;
using System.Runtime.InteropServices; 
using System.ComponentModel.Design.Serialization; 
using System.Text;
using System.Windows; 
using System.Windows.Media;
using System.Windows.Media.Effects;
using System.Windows.Media.Media3D;
using System.Windows.Media.Animation; 
using System.Windows.Media.Composition;
using System.Windows.Media.Imaging; 
using System.Windows.Markup; 
using System.Windows.Media.Converters;
using System.Security; 
using System.Security.Permissions;
using SR=MS.Internal.PresentationCore.SR;
using SRID=MS.Internal.PresentationCore.SRID;
// These types are aliased to match the unamanaged names used in interop 
using BOOL = System.UInt32;
using WORD = System.UInt16; 
using Float = System.Single; 

namespace System.Windows.Media 
{


 
    sealed partial class VisualBrush : TileBrush
    { 
        //----------------------------------------------------- 
        //
        //  Public Methods 
        //
        //-----------------------------------------------------

        #region Public Methods 

        ///  
        ///     Shadows inherited Clone() with a strongly typed 
        ///     version for convenience.
        ///  
        public new VisualBrush Clone()
        {
            return (VisualBrush)base.Clone();
        } 

        ///  
        ///     Shadows inherited CloneCurrentValue() with a strongly typed 
        ///     version for convenience.
        ///  
        public new VisualBrush CloneCurrentValue()
        {
            return (VisualBrush)base.CloneCurrentValue();
        } 

 
 

        #endregion Public Methods 

        //------------------------------------------------------
        //
        //  Public Properties 
        //
        //----------------------------------------------------- 
 
        private static void VisualPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        { 
            VisualBrush target = ((VisualBrush) d);


            Visual oldV = (Visual) e.OldValue; 

            // 
            // If the Visual required layout but it is changed before we do Layout 
            // on that Visual, then we dont want the async LayoutCallback method to run,
            // nor do we want the LayoutUpdated handler to run. So we abort/remove them. 
            //
            if (target._pendingLayout)
            {
                // 
                // Visual has to be a UIElement since _pendingLayout flag is
                // true only if we added the LayoutUpdated handler which can 
                // only be done on UIElement. 
                //
                UIElement element = (UIElement)oldV; 
                Debug.Assert(element != null);
                element.LayoutUpdated -= target.OnLayoutUpdated;

                Debug.Assert(target._DispatcherLayoutResult != null); 
                Debug.Assert(target._DispatcherLayoutResult.Status == System.Windows.Threading.DispatcherOperationStatus.Pending);
                bool abortStatus = target._DispatcherLayoutResult.Abort(); 
                Debug.Assert(abortStatus); 

                target._pendingLayout = false; 
            }

            Visual newV = (Visual) e.NewValue;
            System.Windows.Threading.Dispatcher dispatcher = target.Dispatcher; 

            if (dispatcher != null) 
            { 
                DUCE.IResource targetResource = (DUCE.IResource)target;
                using (CompositionEngineLock.Acquire()) 
                {
                    int channelCount = targetResource.GetChannelCount();

                    for (int channelIndex = 0; channelIndex < channelCount; channelIndex++) 
                    {
                        DUCE.Channel channel = targetResource.GetChannel(channelIndex); 
                        Debug.Assert(!channel.IsOutOfBandChannel); 
                        Debug.Assert(!targetResource.GetHandle(channel).IsNull);
                        target.ReleaseResource(oldV,channel); 
                        target.AddRefResource(newV,channel);
                    }
                }
            } 

            target.PropertyChanged(VisualProperty); 
        } 
        private static void AutoLayoutContentPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        { 
            VisualBrush target = ((VisualBrush) d);


            target.PropertyChanged(AutoLayoutContentProperty); 
        }
 
 
        #region Public Properties
 
        /// 
        ///     Visual - Visual.  Default value is null.
        /// 
        public Visual Visual 
        {
            get 
            { 
                return (Visual) GetValue(VisualProperty);
            } 
            set
            {
                SetValueInternal(VisualProperty, value);
            } 
        }
 
        ///  
        ///     AutoLayoutContent - bool.  Default value is true.
        ///     If this property is true, this Brush will run layout on the contents of this Brush 
        ///     if the Visual is a non-parented UIElement.
        /// 
        public bool AutoLayoutContent
        { 
            get
            { 
                return (bool) GetValue(AutoLayoutContentProperty); 
            }
            set 
            {
                SetValueInternal(AutoLayoutContentProperty, BooleanBoxes.Box(value));
            }
        } 

        #endregion Public Properties 
 
        //------------------------------------------------------
        // 
        //  Protected Methods
        //
        //------------------------------------------------------
 
        #region Protected Methods
 
        ///  
        /// Implementation of Freezable.CreateInstanceCore.
        ///  
        /// The new Freezable.
        protected override Freezable CreateInstanceCore()
        {
            return new VisualBrush(); 
        }
 
 

        #endregion ProtectedMethods 

        //-----------------------------------------------------
        //
        //  Internal Methods 
        //
        //------------------------------------------------------ 
 
        #region Internal Methods
 
        /// 
        ///     Critical: This code calls into an unsafe code block
        ///     TreatAsSafe: This code does not return any critical data.It is ok to expose
        ///     Channels are safe to call into and do not go cross domain and cross process 
        /// 
        [SecurityCritical,SecurityTreatAsSafe] 
        internal override void UpdateResource(DUCE.Channel channel, bool skipOnChannelCheck) 
        {
            // If we're told we can skip the channel check, then we must be on channel 
            Debug.Assert(!skipOnChannelCheck || _duceResource.IsOnChannel(channel));

            if (skipOnChannelCheck || _duceResource.IsOnChannel(channel))
            { 
                base.UpdateResource(channel, skipOnChannelCheck);
 
                // Read values of properties into local variables 
                Transform vTransform = Transform;
                Transform vRelativeTransform = RelativeTransform; 
                Visual vVisual = Visual;

                // Obtain handles for properties that implement DUCE.IResource
                DUCE.ResourceHandle hTransform; 
                if (vTransform == null ||
                    Object.ReferenceEquals(vTransform, Transform.Identity) 
                    ) 
                {
                    hTransform = DUCE.ResourceHandle.Null; 
                }
                else
                {
                    hTransform = ((DUCE.IResource)vTransform).GetHandle(channel); 
                }
                DUCE.ResourceHandle hRelativeTransform; 
                if (vRelativeTransform == null || 
                    Object.ReferenceEquals(vRelativeTransform, Transform.Identity)
                    ) 
                {
                    hRelativeTransform = DUCE.ResourceHandle.Null;
                }
                else 
                {
                    hRelativeTransform = ((DUCE.IResource)vRelativeTransform).GetHandle(channel); 
                } 

                // Obtain handles for properties that implement DUCE.IResource 
                DUCE.ResourceHandle  hVisual = vVisual != null ? ((DUCE.IResource)vVisual).GetHandle(channel) : DUCE.ResourceHandle.Null;

                // Obtain handles for animated properties
                DUCE.ResourceHandle hOpacityAnimations = GetAnimationResourceHandle(OpacityProperty, channel); 
                DUCE.ResourceHandle hViewportAnimations = GetAnimationResourceHandle(ViewportProperty, channel);
                DUCE.ResourceHandle hViewboxAnimations = GetAnimationResourceHandle(ViewboxProperty, channel); 
 
                // Pack & send command packet
                DUCE.MILCMD_VISUALBRUSH data; 
                unsafe
                {
                    data.Type = MILCMD.MilCmdVisualBrush;
                    data.Handle = _duceResource.GetHandle(channel); 
                    if (hOpacityAnimations.IsNull)
                    { 
                        data.Opacity = Opacity; 
                    }
                    data.hOpacityAnimations = hOpacityAnimations; 
                    data.hTransform = hTransform;
                    data.hRelativeTransform = hRelativeTransform;
                    data.ViewportUnits = ViewportUnits;
                    data.ViewboxUnits = ViewboxUnits; 
                    if (hViewportAnimations.IsNull)
                    { 
                        data.Viewport = Viewport; 
                    }
                    data.hViewportAnimations = hViewportAnimations; 
                    if (hViewboxAnimations.IsNull)
                    {
                        data.Viewbox = Viewbox;
                    } 
                    data.hViewboxAnimations = hViewboxAnimations;
                    data.Stretch = Stretch; 
                    data.TileMode = TileMode; 
                    data.AlignmentX = AlignmentX;
                    data.AlignmentY = AlignmentY; 
                    data.CachingHint = (CachingHint)GetValue(RenderOptions.CachingHintProperty);
                    data.CacheInvalidationThresholdMinimum = (double)GetValue(RenderOptions.CacheInvalidationThresholdMinimumProperty);
                    data.CacheInvalidationThresholdMaximum = (double)GetValue(RenderOptions.CacheInvalidationThresholdMaximumProperty);
                    data.hVisual = hVisual; 

                    // Send packed command structure 
                    channel.SendCommand( 
                        (byte*)&data,
                        sizeof(DUCE.MILCMD_VISUALBRUSH)); 
                }
            }
        }
        internal override DUCE.ResourceHandle AddRefOnChannelCore(DUCE.Channel channel) 
        {
 
                if (_duceResource.CreateOrAddRefOnChannel(channel, System.Windows.Media.Composition.DUCE.ResourceType.TYPE_VISUALBRUSH)) 
                {
                    Transform vTransform = Transform; 
                    if (vTransform != null) ((DUCE.IResource)vTransform).AddRefOnChannel(channel);
                    Transform vRelativeTransform = RelativeTransform;
                    if (vRelativeTransform != null) ((DUCE.IResource)vRelativeTransform).AddRefOnChannel(channel);
                    Visual vVisual = Visual; 
                    if (vVisual != null) vVisual.AddRefOnChannelForVisualBrush(this, channel);
                    AddRefOnChannelAnimations(channel); 
 

                    UpdateResource(channel, true /* skip "on channel" check - we already know that we're on channel */ ); 
                }

                return _duceResource.GetHandle(channel);
 
        }
        internal override void ReleaseOnChannelCore(DUCE.Channel channel) 
        { 

                Debug.Assert(_duceResource.IsOnChannel(channel)); 

                if (_duceResource.ReleaseOnChannel(channel))
                {
                    Transform vTransform = Transform; 
                    if (vTransform != null) ((DUCE.IResource)vTransform).ReleaseOnChannel(channel);
                    Transform vRelativeTransform = RelativeTransform; 
                    if (vRelativeTransform != null) ((DUCE.IResource)vRelativeTransform).ReleaseOnChannel(channel); 
                    Visual vVisual = Visual;
                    if (vVisual != null) vVisual.ReleaseOnChannelForVisualBrush(this, channel); 
                    ReleaseOnChannelAnimations(channel);

                }
 
        }
        internal override DUCE.ResourceHandle GetHandleCore(DUCE.Channel channel) 
        { 
            // Note that we are in a lock here already.
            return _duceResource.GetHandle(channel); 
        }
        internal override int GetChannelCountCore()
        {
            // must already be in composition lock here 
            return _duceResource.GetChannelCount();
        } 
        internal override DUCE.Channel GetChannelCore(int index) 
        {
            // Note that we are in a lock here already. 
            return _duceResource.GetChannel(index);
        }

 
        #endregion Internal Methods
 
        //----------------------------------------------------- 
        //
        //  Internal Properties 
        //
        //-----------------------------------------------------

        #region Internal Properties 

        // 
        //  This property finds the correct initial size for the _effectiveValues store on the 
        //  current DependencyObject as a performance optimization
        // 
        //  This includes:
        //    Visual
        //
        internal override int EffectiveValuesInitialSize 
        {
            get 
            { 
                return 1;
            } 
        }


 
        #endregion Internal Properties
 
        //----------------------------------------------------- 
        //
        //  Dependency Properties 
        //
        //------------------------------------------------------

        #region Dependency Properties 

        ///  
        ///     The DependencyProperty for the VisualBrush.Visual property. 
        /// 
        public static readonly DependencyProperty VisualProperty; 
        /// 
        ///     The DependencyProperty for the VisualBrush.AutoLayoutContent property.
        /// 
        public static readonly DependencyProperty AutoLayoutContentProperty; 

        #endregion Dependency Properties 
 
        //-----------------------------------------------------
        // 
        //  Internal Fields
        //
        //------------------------------------------------------
 
        #region Internal Fields
 
 

        internal System.Windows.Media.Composition.DUCE.MultiChannelResource _duceResource = new System.Windows.Media.Composition.DUCE.MultiChannelResource(); 

        internal const bool c_AutoLayoutContent = true;

        #endregion Internal Fields 

 
 
        #region Constructors
 
        //------------------------------------------------------
        //
        //  Constructors
        // 
        //-----------------------------------------------------
 
        static VisualBrush() 
        {
            // We check our static default fields which are of type Freezable 
            // to make sure that they are not mutable, otherwise we will throw
            // if these get touched by more than one thread in the lifetime
            // of your app.  (Windows OS Bug #947272)
            // 

 
            // Initializations 
            Type typeofThis = typeof(VisualBrush);
            VisualProperty = 
                  RegisterProperty("Visual",
                                   typeof(Visual),
                                   typeofThis,
                                   null, 
                                   new PropertyChangedCallback(VisualPropertyChanged),
                                   null, 
                                   /* isIndependentlyAnimated  = */ false, 
                                   /* coerceValueCallback */ null);
            AutoLayoutContentProperty = 
                  RegisterProperty("AutoLayoutContent",
                                   typeof(bool),
                                   typeofThis,
                                   true, 
                                   new PropertyChangedCallback(AutoLayoutContentPropertyChanged),
                                   null, 
                                   /* isIndependentlyAnimated  = */ false, 
                                   /* coerceValueCallback */ null);
        } 



        #endregion Constructors 

    } 
} 

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

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