PrimitiveList.cs source code in C# .NET

                        Code:
                         / DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Print / Reach / AlphaFlattener / PrimitiveList.cs / 1 / PrimitiveList.cs
                        
                        
                            //------------------------------------------------------------------------------ 
//  Microsoft Printing
//  Copyright (c) Microsoft Corporation, 2004
//
//  File:       DisplayList.cs 
//
//  History: 
//      [....]: 04/20/2004  Created 
//-----------------------------------------------------------------------------
 
using System;
using System.Diagnostics;
using System.Collections;              // for ArrayList
using System.Windows;                  // for Rect                        WindowsBase.dll 
using System.Windows.Media;            // for Geometry, Brush, ImageData. PresentationCore.dll
using System.Windows.Shapes;           // for Glyphs                      PresentationFramework.dll 
using System.Globalization; 
using System.Text;
using System.Collections.Generic; 

namespace Microsoft.Internal.AlphaFlattener
{
    internal class DisplayList 
    {
        public bool   m_DisJoint; 
        public double m_width; 
        public double m_height;
 
        public DisplayList(bool disJoint, double width, double height)
        {
            m_DisJoint       = disJoint;
            m_width          = width; 
            m_height         = height;
        } 
 
        #region Public Methods
 
#if DEBUG
        static int overlapcount;

        internal static string LeftPad(object obj, int len) 
        {
            string s; 
 
            List l = obj as List;
 
            if (l != null)
            {
                s = "<";
 
                foreach (int i in l)
                { 
                    if (s.Length > 1) 
                    {
                        s = s + ' '; 
                    }

                    s = s + i;
                } 

                return s + ">"; 
            } 
            else if (obj is Double)
            { 
                s = ((Double)obj).ToString("F1", CultureInfo.InvariantCulture);
            }
            else if (obj is Rect)
            { 
                Rect r = (Rect) obj;
 
                return " [" + LeftPad(r.Left,   6) + ' ' 
                            + LeftPad(r.Top,    6) + ' '
                            + LeftPad(r.Width,  6) + ' ' 
                            + LeftPad(r.Height, 6) + "]";
            }
            else
            { 
                s = obj.ToString();
            } 
 
            return s.PadLeft(len, ' ');
        } 

        static internal void PrintPrimitive(PrimitiveInfo info, int index, bool verbose)
        {
            if (index < 0) 
            {
                Console.WriteLine(); 
 
                Console.WriteLine(" No      Type           Und Ovr TrO           Bounding Box                   Clipping");
 
                if (verbose)
                {
                    Console.Write("                     Transform");
                } 

                Console.WriteLine(); 
                return; 
            }
 
            Primitive p = info.primitive;

            string typ = p.GetType().ToString();
 
            typ = typ.Substring(typ.LastIndexOf('.') + 1);
 
            Console.Write(LeftPad(index, 4) + LeftPad(typ, 18) + ":"); 

            List extra = null; 

            if (p.IsOpaque)
            {
                Console.Write(' '); 
            }
            else 
            { 
                Console.Write('@');
            } 

            if (info.underlay == null)
            {
                Console.Write("   "); 
            }
            else 
            { 
                extra = info.underlay;
 
                Console.Write(LeftPad(info.underlay.Count, 3));
            }

            if (info.overlap != null) 
            {
                Console.Write(' ' + LeftPad(info.overlap.Count, 3)); 
 
                if (info.overlapHasTransparency != 0)
                { 
                    Console.Write('$');
                    Console.Write(LeftPad(info.overlapHasTransparency, 3));
                }
                else 
                {
                    Console.Write("    "); 
                } 

                Console.Write(' '); 
            }
            else
            {
                Console.Write("         "); 
            }
 
            Console.Write(LeftPad(info.bounds, 0)); 

            Geometry clip = p.Clip; 

            if (clip != null)
            {
                Console.Write(LeftPad(clip.Bounds, 0)); 
            }
 
            if (verbose) 
            {
                Matrix m = p.Transform; 

                Console.Write(" {");
                Console.Write(LeftPad(m.M11, 3) + ' ');
                Console.Write(LeftPad(m.M12, 3) + ' '); 
                Console.Write(LeftPad(m.M21, 3) + ' ');
                Console.Write(LeftPad(m.M22, 3) + ' '); 
                Console.Write(LeftPad(m.OffsetX, 6) + ' '); 
                Console.Write(LeftPad(m.OffsetY, 6));
                Console.Write("} "); 
            }

            if (verbose)
            { 
                GlyphPrimitive gp = p as GlyphPrimitive;
 
                if (gp != null) 
                {
                    IList chars = gp.GlyphRun.Characters; 

                    Console.Write(" \"");

                    for (int i = 0; i < chars.Count; i ++) 
                    {
                        Console.Write(chars[i]); 
                    } 

                    Console.Write('"'); 
                }
            }

            if (verbose) 
            {
                GeometryPrimitive gp = p as GeometryPrimitive; 
 
                if ((gp != null) && (gp.Brush != null) && (gp.Pen == null))
                { 
                    Brush b = gp.Brush.Brush;

                    if (b != null)
                    { 
                        SolidColorBrush sb = b as SolidColorBrush;
 
                        if (sb != null) 
                        {
                            Console.Write(" SolidColorBrush({0})", sb.Color); 
                        }
                    }
                }
            } 

            if (extra != null) 
            { 
                Console.Write(' ');
                Console.Write(LeftPad(extra, 0)); 
            }

            Console.WriteLine();
        } 
#endif
 
        ///  
        /// Check if a primitive only contains white color
        ///  
        /// 
        /// 
        internal static bool IsWhitePrimitive(Primitive p)
        { 
            GeometryPrimitive gp = p as GeometryPrimitive;
 
            if (gp != null) 
            {
                if ((gp.Brush != null) && (gp.Pen == null)) 
                {
                    return gp.Brush.IsWhite();
                }
 
                if ((gp.Pen != null) && (gp.Brush == null))
                { 
                    return gp.Pen.StrokeBrush.IsWhite(); 
                }
            } 

            return false;
        }
 
        /// 
        /// Add a primitve to display list 
        ///  
        /// 
        public void RecordPrimitive(Primitive p) 
        {
            if (null == _commands)
            {
                _commands = new List(); 
            }
 
            int index = _commands.Count; 

            PrimitiveInfo info = new PrimitiveInfo(p); 

            // Skip empty and totally clipped primitive

            bool skip = !Utility.IsRenderVisible(info.bounds) || Utility.Disjoint(p.Clip, info.bounds); 

            if (!skip) 
            { 
                if (!m_DisJoint && (index == 0))
                { 
                    // Skip white objects in the front
                    skip = IsWhitePrimitive(p);
                }
 
                if (!skip)
                { 
                    _commands.Add(info); 
                }
            } 

            if ((p.Clip != null) && Utility.IsRectangle(p.Clip))
            {
                Rect bounds = p.Clip.Bounds; 

                if ((bounds.Left <= 0) && (bounds.Top <= 0) && 
                    (bounds.Right >= m_width) && (bounds.Bottom >= m_height)) 
                {
                    // Remove page full clipping 
                    p.Clip = null;
                }
                else if ((bounds.Left <= info.bounds.Left) &&
                         (bounds.Top  <= info.bounds.Top) && 
                         (bounds.Right >= info.bounds.Right) &&
                         (bounds.Bottom >= info.bounds.Bottom)) 
                { 
                    // Remove clipping larger than primitive
                    p.Clip = null; 
                }
            }
#if DEBUG
            if (skip && (Configuration.Verbose >= 2)) 
            {
                Console.Write("skip "); 
 
                PrintPrimitive(info, index, true);
            } 
#endif
        }

        public Rect this[int index] 
        {
            get 
            { 
                return (_commands[index]).bounds;
            } 
        }

        static bool OrderedInsert(List list, int n)
        { 
            int pos = list.Count;
 
            // Sort in increasing order, remove duplication 
            for (int i = 0; i < pos; i++)
            { 
                if (list[i] == n)
                {
                    return false;
                } 

                if (list[i] > n) 
                { 
                    pos = i;
                    break; 
                }
            }

            list.Insert(pos, n); 

            return true; 
        } 

        public void ReportOverlapping(int one, int two) 
        {
            if (one > two)
            {
                int t = one; one = two; two = t; 
            }
 
            PrimitiveInfo pi = _commands[one]; 

            if (pi.overlap == null) 
            {
                pi.overlap = new List();
            }
 
            if (OrderedInsert(pi.overlap, two))
            { 
                PrimitiveInfo qi = _commands[two]; 

                if (!qi.primitive.IsTransparent && !qi.primitive.IsOpaque) 
                {
                    pi.overlapHasTransparency ++;
                }
 
                // if (! qi.primitive.IsOpaque) // Remember primitves covered by a primitive having transparency
                { 
                    if (qi.underlay == null) 
                    {
                        qi.underlay = new List(); 
                    }

                    OrderedInsert(qi.underlay, one);
                } 
            }
#if DEBUG 
            if (Configuration.Verbose >= 2) 
            {
                Console.Write(" <{0} {1}>", one, two); 

                overlapcount ++;

                if (overlapcount >= 10) 
                {
                    Console.WriteLine(); 
                    overlapcount = 0; 
                }
            } 
#endif
        }

#if UNIT_TEST 
        internal void Add(double x0, double x1, double y0, double y1)
        { 
            if (_commands == null) 
            {
                _commands = new ArrayList(); 
            }

            _commands.Add(new PrimitiveInfo(new Rect(x0, y0, x1 - x0, y1 - y0)));
        } 
#endif
 
        ///  
        /// Find all primitive bounding box intersections
        ///  
        /// Number of primitives need to be considered. The rest of primitives can be ignored as they are all opaque
        public void CalculateIntersections(int count)
        {
            RectangleIntersection ri = new RectangleIntersection(); 

            ri.CalculateIntersections(this, count); 
        } 

        #endregion 

        #region Public Properties
        public List Commands
        { 
            get
            { 
                return _commands; 
            }
        } 
        #endregion

        #region Protected Attributes
        protected List    _commands; //    = null; 
        #endregion
 
    } 

} // end of namespace 

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