AutoPatientInfoRecorder/src/AntdUI/Lib/SVG/SvgElement.cs

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// THIS FILE IS PART OF SVG PROJECT
// THE SVG PROJECT IS AN OPENSOURCE LIBRARY LICENSED UNDER THE MS-PL License.
// COPYRIGHT (C) svg-net. ALL RIGHTS RESERVED.
// GITHUB: https://github.com/svg-net/SVG

using AntdUI.Svg.Transforms;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Linq;
using System.Xml;

namespace AntdUI.Svg
{
    /// <summary>
    /// The base class of which all SVG elements are derived from.
    /// </summary>
    public abstract partial class SvgElement : ISvgElement, ISvgTransformable, ICloneable, ISvgNode
    {
        internal const int StyleSpecificity_PresAttribute = 0;
        internal const int StyleSpecificity_InlineStyle = 1 << 16;

        internal SvgElement _parent;
        private string _elementName;
        private SvgAttributeCollection _attributes;
        private EventHandlerList _eventHandlers;
        private SvgElementCollection _children;
        private Region _graphicsClip;
        private Matrix _graphicsMatrix;
        private SvgCustomAttributeCollection _customAttributes;
        private List<ISvgNode> _nodes = new List<ISvgNode>();


        private Dictionary<string, SortedDictionary<int, string>> _styles = new Dictionary<string, SortedDictionary<int, string>>();


        public void AddStyle(string name, string value, int specificity)
        {
            SortedDictionary<int, string> rules;
            if (!_styles.TryGetValue(name, out rules))
            {
                rules = new SortedDictionary<int, string>();
                _styles[name] = rules;
            }
            while (rules.ContainsKey(specificity)) specificity++;
            rules[specificity] = value;
        }
        public void FlushStyles()
        {
            if (_styles.Any())
            {
                var styles = new Dictionary<string, SortedDictionary<int, string>>();
                foreach (var s in _styles)
                {
                    if (!SvgElementFactory.SetPropertyValue(this, s.Key, s.Value.Last().Value, OwnerDocument, isStyle: true))
                    {
                        styles.Add(s.Key, s.Value);
                    }