PathFigure.cs source code in C# .NET

                        Code:
                         / DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Core / System / Windows / Media / PathFigure.cs / 1 / PathFigure.cs
                        
                        
                            //------------------------------------------------------------------------------ 
//  Microsoft Avalon
//  Copyright (c) Microsoft Corporation, 2001
//
//  File:       PathFigure.cs 
//-----------------------------------------------------------------------------
 
using System; 
using MS.Internal;
using MS.Internal.PresentationCore; 
using System.ComponentModel;
using System.ComponentModel.Design.Serialization;
using System.Diagnostics;
using System.Reflection; 
using System.Collections;
using System.Collections.Generic; 
using System.Text; 
using System.Globalization;
using System.Windows.Media; 
using System.Windows.Media.Composition;
using System.Windows;
using System.Text.RegularExpressions;
using System.Windows.Media.Animation; 
using System.Windows.Markup;
using System.Security; 
using System.Security.Permissions; 
using SR=MS.Internal.PresentationCore.SR;
using SRID=MS.Internal.PresentationCore.SRID; 

namespace System.Windows.Media
{
    #region PathFigure 
    /// 
    /// PathFigure 
    ///  
    [ContentProperty("Segments")]
    [Localizability(LocalizationCategory.None, Readability = Readability.Unreadable)] 
    public sealed partial class PathFigure : Animatable, IFormattable
    {
        #region Constructors
        ///  
        ///
        ///  
        public PathFigure() 
        {
        } 

        /// 
        /// Constructor
        ///  
        /// The path's startpoint
        /// A collection of segments 
        /// Indicates whether the figure is closed 
        public PathFigure(Point start, IEnumerable segments, bool closed)
        { 
            StartPoint = start;
            PathSegmentCollection mySegments = Segments;

            if (segments != null) 
            {
                foreach (PathSegment item in segments) 
                { 
                    mySegments.Add(item);
                } 
            }
            else
            {
                throw new ArgumentNullException("segments"); 
            }
 
            IsClosed = closed; 
        }
 
        #endregion Constructors

        #region GetFlattenedPathFigure
        ///  
        /// Approximate this figure with a polygonal PathFigure
        ///  
        /// The approximation error tolerance 
        /// The way the error tolerance will be interpreted - relative or absolute
        /// Returns the polygonal approximation as a PathFigure. 
        public PathFigure GetFlattenedPathFigure(double tolerance, ToleranceType type)
        {
            PathGeometry geometry = new PathGeometry();
            geometry.Figures.Add(this); 

            PathGeometry flattenedGeometry = geometry.GetFlattenedPathGeometry(tolerance, type); 
 
            int count = flattenedGeometry.Figures.Count;
 
            if (count == 0)
            {
                return new PathFigure();
            } 
            else if (count == 1)
            { 
                return flattenedGeometry.Figures[0]; 
            }
            else 
            {
                throw new InvalidOperationException(SR.Get(SRID.PathGeometry_InternalReadBackError));
            }
        } 

 
        ///  
        /// Approximate this figure with a polygonal PathFigure
        ///  
        /// Returns the polygonal approximation as a PathFigure.
        public PathFigure GetFlattenedPathFigure()
        {
            return GetFlattenedPathFigure(Geometry.StandardFlatteningTolerance, ToleranceType.Absolute); 
        }
 
        #endregion 

        ///  
        /// Returns true if this geometry may have curved segments
        /// 
        public bool MayHaveCurves()
        { 
            PathSegmentCollection segments = Segments;
 
            if (segments == null) 
            {
                return false; 
            }

            int count = segments.Count;
 
            for (int i = 0; i < count; i++)
            { 
                if (segments.Internal_GetItem(i).IsCurved()) 
                {
                    return true; 
                }
            }

            return false; 
        }
 
        #region GetTransformedCopy 
        internal PathFigure GetTransformedCopy(Matrix matrix)
        { 
            PathSegmentCollection segments = Segments;

            PathFigure result = new PathFigure();
            Point current = StartPoint; 
            result.StartPoint = current * matrix;
 
            if (segments != null) 
            {
                int count = segments.Count; 
                for (int i=0; i
        /// Creates a string representation of this object based on the current culture. 
        ///  
        /// 
        /// A string representation of this object. 
        /// 
        public override string ToString()
        {
            ReadPreamble(); 
            // Delegate to the internal method which implements all ToString calls.
            return ConvertToString(null /* format string */, null /* format provider */); 
        } 

        ///  
        /// Creates a string representation of this object based on the IFormatProvider
        /// passed in.  If the provider is null, the CurrentCulture is used.
        /// 
        ///  
        /// A string representation of this object.
        ///  
        public string ToString(IFormatProvider provider) 
        {
            ReadPreamble(); 
            // Delegate to the internal method which implements all ToString calls.
            return ConvertToString(null /* format string */, provider);
        }
 
        /// 
        /// Creates a string representation of this object based on the format string 
        /// and IFormatProvider passed in. 
        /// If the provider is null, the CurrentCulture is used.
        /// See the documentation for IFormattable for more information. 
        /// 
        /// 
        /// A string representation of this object.
        ///  
        string IFormattable.ToString(string format, IFormatProvider provider)
        { 
            ReadPreamble(); 
            // Delegate to the internal method which implements all ToString calls.
            return ConvertToString(format, provider); 
        }

        /// 
        /// Can serialze "this" to a string. 
        /// This returns true iff IsFilled == c_isFilled and the segment
        /// collection can be stroked. 
        ///  
        internal bool CanSerializeToString()
        { 
            PathSegmentCollection segments = Segments;
            return (IsFilled == c_IsFilled) && ((segments == null) || segments.CanSerializeToString());
        }
 
        /// 
        /// Creates a string representation of this object based on the format string 
        /// and IFormatProvider passed in. 
        /// If the provider is null, the CurrentCulture is used.
        /// See the documentation for IFormattable for more information. 
        /// 
        /// 
        /// A string representation of this object.
        ///  
        internal string ConvertToString(string format, IFormatProvider provider)
        { 
            PathSegmentCollection segments = Segments; 
            return "M" +
                ((IFormattable)StartPoint).ToString(format, provider) + 
                (segments != null ? segments.ConvertToString(format, provider) : "") +
                (IsClosed ? "z" : "");
        }
 
        /// 
        /// SerializeData - Serialize the contents of this Figure to the provided context. 
        ///  
        internal void SerializeData(StreamGeometryContext ctx)
        { 
            ctx.BeginFigure(StartPoint, IsFilled, IsClosed);

            PathSegmentCollection segments = Segments;
 
            int pathSegmentCount = segments == null ? 0 : segments.Count;
 
            for (int i = 0; i < pathSegmentCount; i++) 
            {
                segments.Internal_GetItem(i).SerializeData(ctx); 
            }
        }
    }
 
    #endregion
} 
 

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