[12762] | 1 | using System;
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| 2 | using System.Xml;
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| 3 | using System.Linq;
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| 4 | using System.Text;
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| 5 | using System.Text.RegularExpressions;
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| 6 | using System.Diagnostics;
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| 7 | using System.Collections.Generic;
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| 8 |
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| 9 | using System.Windows;
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| 10 | using System.Windows.Media;
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| 11 |
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| 12 | using SharpVectors.Runtime;
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| 13 |
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| 14 | using SharpVectors.Dom.Css;
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| 15 | using SharpVectors.Dom.Svg;
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| 16 |
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| 17 | using SharpVectors.Renderers.Wpf;
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| 18 |
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| 19 | namespace SharpVectors.Renderers.Texts
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| 20 | {
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| 21 | public abstract class WpfTextRenderer
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| 22 | {
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| 23 | #region Protected Fields
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| 24 |
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| 25 | protected const string Whitespace = " ";
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| 26 |
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| 27 | protected readonly static Regex _tabNewline = new Regex(@"[\n\f\t]");
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| 28 | protected readonly static Regex _decimalNumber = new Regex(@"^\d");
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| 29 |
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| 30 | protected string _actualFontName;
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| 31 |
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| 32 | protected DrawingContext _textContext;
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| 33 | protected SvgTextElement _textElement;
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| 34 |
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| 35 | protected WpfDrawingContext _drawContext;
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| 36 | protected WpfTextRendering _textRendering;
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| 37 |
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| 38 | #endregion
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| 39 |
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| 40 | #region Constructors and Destructor
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| 41 |
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| 42 | protected WpfTextRenderer(SvgTextElement textElement, WpfTextRendering textRendering)
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| 43 | {
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| 44 | if (textElement == null)
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| 45 | {
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| 46 | throw new ArgumentNullException("textElement",
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| 47 | "The SVG text element is required, and cannot be null (or Nothing).");
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| 48 | }
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| 49 | if (textRendering == null)
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| 50 | {
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| 51 | throw new ArgumentNullException("textRendering",
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| 52 | "The text rendering object is required, and cannot be null (or Nothing).");
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| 53 | }
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| 54 |
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| 55 | _textElement = textElement;
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| 56 | _textRendering = textRendering;
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| 57 | }
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| 58 |
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| 59 | #endregion
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| 60 |
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| 61 | #region Public Properties
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| 62 |
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| 63 | public bool IsInitialized
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| 64 | {
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| 65 | get
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| 66 | {
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| 67 | return (_textContext != null && _drawContext != null);
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| 68 | }
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| 69 | }
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| 70 |
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| 71 | public DrawingContext TextContext
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| 72 | {
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| 73 | get
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| 74 | {
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| 75 | return _textContext;
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| 76 | }
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| 77 | }
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| 78 |
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| 79 | public SvgTextElement TextElement
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| 80 | {
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| 81 | get
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| 82 | {
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| 83 | return _textElement;
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| 84 | }
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| 85 | }
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| 86 |
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| 87 | public WpfDrawingContext DrawContext
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| 88 | {
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| 89 | get
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| 90 | {
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| 91 | return _drawContext;
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| 92 | }
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| 93 | }
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| 94 |
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| 95 |
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| 96 | #endregion
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| 97 |
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| 98 | #region Protected Properties
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| 99 |
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| 100 | protected bool IsMeasuring
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| 101 | {
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| 102 | get
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| 103 | {
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| 104 | if (_textRendering != null)
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| 105 | {
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| 106 | return _textRendering.IsMeasuring;
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| 107 | }
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| 108 |
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| 109 | return false;
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| 110 | }
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| 111 | }
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| 112 |
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| 113 | protected bool IsTextPath
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| 114 | {
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| 115 | get
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| 116 | {
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| 117 | if (_textRendering != null)
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| 118 | {
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| 119 | return _textRendering.IsTextPath;
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| 120 | }
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| 121 |
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| 122 | return false;
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| 123 | }
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| 124 | set
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| 125 | {
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| 126 | if (_textRendering != null)
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| 127 | {
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| 128 | _textRendering.IsTextPath = value;
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| 129 | }
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| 130 | }
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| 131 | }
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| 132 |
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| 133 | protected double TextWidth
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| 134 | {
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| 135 | get
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| 136 | {
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| 137 | if (_textRendering != null)
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| 138 | {
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| 139 | return _textRendering.TextWidth;
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| 140 | }
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| 141 |
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| 142 | return 0;
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| 143 | }
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| 144 | }
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| 145 |
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| 146 | #endregion
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| 147 |
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| 148 | #region Public Methods
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| 149 |
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| 150 | public virtual void Initialize(DrawingContext textContext, WpfDrawingContext drawContext)
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| 151 | {
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| 152 | if (textContext == null)
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| 153 | {
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| 154 | throw new ArgumentNullException("textContext",
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| 155 | "The text context is required, and cannot be null (or Nothing).");
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| 156 | }
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| 157 | if (drawContext == null)
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| 158 | {
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| 159 | throw new ArgumentNullException("drawContext",
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| 160 | "The drawing context is required, and cannot be null (or Nothing).");
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| 161 | }
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| 162 |
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| 163 | _textContext = textContext;
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| 164 | _drawContext = drawContext;
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| 165 | }
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| 166 |
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| 167 | public virtual void Uninitialize()
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| 168 | {
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| 169 | _textContext = null;
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| 170 | _drawContext = null;
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| 171 | }
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| 172 |
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| 173 | public abstract void RenderSingleLineText(SvgTextContentElement element,
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| 174 | ref Point startPos, string text, double rotate, WpfTextPlacement placement);
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| 175 |
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| 176 | public abstract void RenderTextRun(SvgTextContentElement element,
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| 177 | ref Point startPos, string text, double rotate, WpfTextPlacement placement);
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| 178 |
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| 179 | #region TRef/TSpan Methods
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| 180 |
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| 181 | public static string TrimText(SvgTextContentElement element, string val)
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| 182 | {
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| 183 | if (element.XmlSpace != "preserve")
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| 184 | val = val.Replace("\n", String.Empty);
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| 185 | val = _tabNewline.Replace(val, " ");
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| 186 |
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| 187 | if (element.XmlSpace == "preserve" || element.XmlSpace == "default")
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| 188 | {
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| 189 | return val;
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| 190 | }
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| 191 | else
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| 192 | {
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| 193 | return val.Trim();
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| 194 | }
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| 195 | }
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| 196 |
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| 197 | public static string GetText(SvgTextContentElement element, XmlNode child)
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| 198 | {
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| 199 | return TrimText(element, child.Value);
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| 200 | }
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| 201 |
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| 202 | public static string GetTRefText(SvgTRefElement element)
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| 203 | {
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| 204 | XmlElement refElement = element.ReferencedElement;
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| 205 | if (refElement != null)
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| 206 | {
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| 207 | return TrimText(element, refElement.InnerText);
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| 208 | }
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| 209 | else
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| 210 | {
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| 211 | return String.Empty;
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| 212 | }
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| 213 | }
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| 214 |
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| 215 | #endregion
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| 216 |
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| 217 | #region TextPosition/Size Methods
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| 218 |
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| 219 | public static WpfTextPlacement GetCurrentTextPosition(SvgTextPositioningElement posElement, Point p)
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| 220 | {
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| 221 | ISvgLengthList xValues = posElement.X.AnimVal;
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| 222 | ISvgLengthList yValues = posElement.Y.AnimVal;
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| 223 | ISvgLengthList dxValues = posElement.Dx.AnimVal;
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| 224 | ISvgLengthList dyValues = posElement.Dy.AnimVal;
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| 225 | ISvgNumberList rValues = posElement.Rotate.AnimVal;
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| 226 |
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| 227 | bool requiresGlyphPositioning = false;
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| 228 | bool isXYGlyphPositioning = false;
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| 229 | bool isDxyGlyphPositioning = false;
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| 230 | bool isRotateGlyphPositioning = false;
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| 231 |
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| 232 | double xValue = p.X;
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| 233 | double yValue = p.Y;
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| 234 | double rValue = 0;
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| 235 | double dxValue = 0;
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| 236 | double dyValue = 0;
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| 237 |
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| 238 | WpfTextPlacement textPlacement = null;
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| 239 |
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| 240 | if (xValues.NumberOfItems > 0)
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| 241 | {
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| 242 | if (xValues.NumberOfItems > 1)
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| 243 | {
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| 244 | isXYGlyphPositioning = true;
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| 245 | requiresGlyphPositioning = true;
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| 246 | }
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| 247 |
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| 248 | xValue = xValues.GetItem(0).Value;
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| 249 | p.X = xValue;
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| 250 | }
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| 251 | if (yValues.NumberOfItems > 0)
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| 252 | {
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| 253 | if (yValues.NumberOfItems > 1)
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| 254 | {
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| 255 | isXYGlyphPositioning = true;
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| 256 | requiresGlyphPositioning = true;
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| 257 | }
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| 258 |
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| 259 | yValue = yValues.GetItem(0).Value;
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| 260 | p.Y = yValue;
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| 261 | }
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| 262 | if (dxValues.NumberOfItems > 0)
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| 263 | {
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| 264 | if (dxValues.NumberOfItems > 1)
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| 265 | {
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| 266 | isDxyGlyphPositioning = true;
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| 267 | requiresGlyphPositioning = true;
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| 268 | }
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| 269 |
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| 270 | dxValue = dxValues.GetItem(0).Value;
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| 271 | p.X += dxValue;
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| 272 | }
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| 273 | if (dyValues.NumberOfItems > 0)
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| 274 | {
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| 275 | if (dyValues.NumberOfItems > 1)
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| 276 | {
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| 277 | isDxyGlyphPositioning = true;
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| 278 | requiresGlyphPositioning = true;
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| 279 | }
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| 280 |
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| 281 | dyValue = dyValues.GetItem(0).Value;
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| 282 | p.Y += dyValue;
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| 283 | }
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| 284 | if (rValues.NumberOfItems > 0)
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| 285 | {
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| 286 | if (rValues.NumberOfItems > 1)
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| 287 | {
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| 288 | isRotateGlyphPositioning = true;
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| 289 | requiresGlyphPositioning = true;
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| 290 | }
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| 291 |
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| 292 | rValue = rValues.GetItem(0).Value;
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| 293 | }
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| 294 |
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| 295 | if (requiresGlyphPositioning)
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| 296 | {
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| 297 | uint xCount = xValues.NumberOfItems;
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| 298 | uint yCount = yValues.NumberOfItems;
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| 299 | uint dxCount = dxValues.NumberOfItems;
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| 300 | uint dyCount = dyValues.NumberOfItems;
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| 301 | uint rCount = rValues.NumberOfItems;
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| 302 |
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| 303 | List<WpfTextPosition> textPositions = null;
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| 304 |
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| 305 | bool isRotateOnly = false;
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| 306 |
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| 307 | if (isXYGlyphPositioning)
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| 308 | {
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| 309 | uint itemCount = Math.Max(Math.Max(xCount, yCount), Math.Max(dxCount, dyCount));
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| 310 | itemCount = Math.Max(itemCount, rCount);
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| 311 | textPositions = new List<WpfTextPosition>((int)itemCount);
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| 312 |
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| 313 | double xLast = 0;
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| 314 | double yLast = 0;
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| 315 |
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| 316 | for (uint i = 0; i < itemCount; i++)
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| 317 | {
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| 318 | double xNext = i < xCount ? xValues.GetItem(i).Value : xValue;
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| 319 | double yNext = i < yCount ? yValues.GetItem(i).Value : yValue;
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| 320 | double rNext = i < rCount ? rValues.GetItem(i).Value : rValue;
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| 321 | double dxNext = i < dxCount ? dxValues.GetItem(i).Value : dxValue;
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| 322 | double dyNext = i < dyCount ? dyValues.GetItem(i).Value : dyValue;
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| 323 |
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| 324 | if (i < xCount)
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| 325 | {
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| 326 | xLast = xNext;
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| 327 | }
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| 328 | else
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| 329 | {
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| 330 | xNext = xLast;
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| 331 | }
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| 332 | if (i < yCount)
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| 333 | {
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| 334 | yLast = yNext;
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| 335 | }
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| 336 | else
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| 337 | {
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| 338 | yNext = yLast;
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| 339 | }
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| 340 |
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| 341 | WpfTextPosition textPosition = new WpfTextPosition(
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| 342 | new Point(xNext + dxNext, yNext + dyNext), rNext);
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| 343 |
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| 344 | textPositions.Add(textPosition);
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| 345 | }
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| 346 | }
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| 347 | else if (isDxyGlyphPositioning)
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| 348 | {
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| 349 | }
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| 350 | else if (isRotateGlyphPositioning)
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| 351 | {
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| 352 | isRotateOnly = true;
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| 353 | uint itemCount = Math.Max(Math.Max(xCount, yCount), Math.Max(dxCount, dyCount));
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| 354 | itemCount = Math.Max(itemCount, rCount);
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| 355 | textPositions = new List<WpfTextPosition>((int)itemCount);
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| 356 |
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| 357 | for (uint i = 0; i < itemCount; i++)
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| 358 | {
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| 359 | double rNext = i < rCount ? rValues.GetItem(i).Value : rValue;
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| 360 |
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| 361 | WpfTextPosition textPosition = new WpfTextPosition(p, rNext);
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| 362 |
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| 363 | textPositions.Add(textPosition);
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| 364 | }
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| 365 | }
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| 366 |
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| 367 | if (textPositions != null && textPositions.Count != 0)
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| 368 | {
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| 369 | textPlacement = new WpfTextPlacement(p, rValue, textPositions, isRotateOnly);
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| 370 | }
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| 371 | else
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| 372 | {
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| 373 | textPlacement = new WpfTextPlacement(p, rValue);
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| 374 | }
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| 375 | }
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| 376 | else
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| 377 | {
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| 378 | textPlacement = new WpfTextPlacement(p, rValue);
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| 379 | }
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| 380 |
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| 381 | return textPlacement;
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| 382 | }
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| 383 |
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| 384 | public static double GetComputedFontSize(SvgTextContentElement element)
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| 385 | {
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| 386 | string str = element.GetPropertyValue("font-size");
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| 387 | double fontSize = 12;
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| 388 | if (str.EndsWith("%"))
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| 389 | {
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| 390 | // percentage of inherited value
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| 391 | }
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| 392 | else if (_decimalNumber.IsMatch(str))
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| 393 | {
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| 394 | // svg length
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| 395 | fontSize = new SvgLength(element, "font-size",
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| 396 | SvgLengthDirection.Viewport, str, "10px").Value;
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| 397 | }
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| 398 | else if (str == "larger")
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| 399 | {
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| 400 | }
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| 401 | else if (str == "smaller")
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| 402 | {
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| 403 |
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| 404 | }
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| 405 | else
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| 406 | {
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| 407 | // check for absolute value
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| 408 | }
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| 409 |
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| 410 | return fontSize;
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| 411 | }
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| 412 |
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| 413 | #endregion
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| 414 |
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| 415 | #endregion
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| 416 |
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| 417 | #region Protected Methods
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| 418 |
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| 419 | #region Helper Methods
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| 420 |
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| 421 | protected void SetTextWidth(double textWidth)
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| 422 | {
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| 423 | if (_textRendering != null && textWidth != 0)
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| 424 | {
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| 425 | _textRendering.SetTextWidth(textWidth);
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| 426 | }
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| 427 | }
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| 428 |
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| 429 | protected void AddTextWidth(double textWidth)
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| 430 | {
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| 431 | if (_textRendering != null && textWidth != 0)
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| 432 | {
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| 433 | _textRendering.AddTextWidth(textWidth);
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| 434 | }
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| 435 | }
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| 436 |
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| 437 | protected Brush GetBrush()
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| 438 | {
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| 439 | WpfSvgPaint paint = new WpfSvgPaint(_drawContext, _textElement, "fill");
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| 440 |
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| 441 | return paint.GetBrush();
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| 442 | }
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| 443 |
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| 444 | protected Pen GetPen()
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| 445 | {
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| 446 | WpfSvgPaint paint = new WpfSvgPaint(_drawContext, _textElement, "stroke");
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| 447 |
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| 448 | return paint.GetPen();
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| 449 | }
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| 450 |
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| 451 | /// <summary>
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| 452 | /// This will extract a <see cref="PathGeometry"/> that is nested into GeometryGroup, which
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| 453 | /// is normally created by the FormattedText.BuildGeometry() method.
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| 454 | /// </summary>
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| 455 | /// <param name="sourceGeometry"></param>
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| 456 | /// <returns></returns>
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| 457 | protected static Geometry ExtractTextPathGeometry(Geometry sourceGeometry)
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| 458 | {
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| 459 | GeometryGroup outerGroup = sourceGeometry as GeometryGroup;
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| 460 | if (outerGroup != null && outerGroup.Children.Count == 1)
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| 461 | {
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| 462 | GeometryGroup innerGroup = outerGroup.Children[0] as GeometryGroup;
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| 463 | if (innerGroup != null && innerGroup.Children.Count == 1)
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| 464 | {
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| 465 | return innerGroup.Children[0];
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| 466 | }
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| 467 |
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| 468 | return innerGroup;
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| 469 | }
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| 470 |
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| 471 | return sourceGeometry;
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| 472 | }
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| 473 |
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| 474 | #endregion
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| 475 |
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| 476 | #region FontWeight Methods
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| 477 |
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| 478 | protected FontWeight GetTextFontWeight(SvgTextContentElement element)
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| 479 | {
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| 480 | string fontWeight = element.GetPropertyValue("font-weight");
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| 481 | if (String.IsNullOrEmpty(fontWeight))
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| 482 | {
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| 483 | return FontWeights.Normal;
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| 484 | }
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| 485 |
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| 486 | switch (fontWeight)
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| 487 | {
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| 488 | case "normal":
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| 489 | return FontWeights.Normal;
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| 490 | case "bold":
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| 491 | return FontWeights.Bold;
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| 492 | case "100":
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| 493 | return FontWeights.Thin;
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| 494 | case "200":
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| 495 | return FontWeights.ExtraLight;
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| 496 | case "300":
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| 497 | return FontWeights.Light;
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| 498 | case "400":
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| 499 | return FontWeights.Normal;
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| 500 | case "500":
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| 501 | return FontWeights.Medium;
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| 502 | case "600":
|
---|
| 503 | return FontWeights.SemiBold;
|
---|
| 504 | case "700":
|
---|
| 505 | return FontWeights.Bold;
|
---|
| 506 | case "800":
|
---|
| 507 | return FontWeights.ExtraBold;
|
---|
| 508 | case "900":
|
---|
| 509 | return FontWeights.Black;
|
---|
| 510 | case "950":
|
---|
| 511 | return FontWeights.UltraBlack;
|
---|
| 512 | }
|
---|
| 513 |
|
---|
| 514 | if (String.Equals(fontWeight, "bolder", StringComparison.OrdinalIgnoreCase))
|
---|
| 515 | {
|
---|
| 516 | SvgTransformableElement parentElement = element.ParentNode as SvgTransformableElement;
|
---|
| 517 | if (parentElement != null)
|
---|
| 518 | {
|
---|
| 519 | fontWeight = parentElement.GetPropertyValue("font-weight");
|
---|
| 520 | if (!String.IsNullOrEmpty(fontWeight))
|
---|
| 521 | {
|
---|
| 522 | return this.GetBolderFontWeight(fontWeight);
|
---|
| 523 | }
|
---|
| 524 | }
|
---|
| 525 | return FontWeights.ExtraBold;
|
---|
| 526 | }
|
---|
| 527 | if (String.Equals(fontWeight, "lighter", StringComparison.OrdinalIgnoreCase))
|
---|
| 528 | {
|
---|
| 529 | SvgTransformableElement parentElement = element.ParentNode as SvgTransformableElement;
|
---|
| 530 | if (parentElement != null)
|
---|
| 531 | {
|
---|
| 532 | fontWeight = parentElement.GetPropertyValue("font-weight");
|
---|
| 533 | if (!String.IsNullOrEmpty(fontWeight))
|
---|
| 534 | {
|
---|
| 535 | return this.GetLighterFontWeight(fontWeight);
|
---|
| 536 | }
|
---|
| 537 | }
|
---|
| 538 | return FontWeights.Light;
|
---|
| 539 | }
|
---|
| 540 |
|
---|
| 541 | return FontWeights.Normal;
|
---|
| 542 | }
|
---|
| 543 |
|
---|
| 544 | protected FontWeight GetBolderFontWeight(string fontWeight)
|
---|
| 545 | {
|
---|
| 546 | if (String.IsNullOrEmpty(fontWeight))
|
---|
| 547 | {
|
---|
| 548 | return FontWeights.Normal;
|
---|
| 549 | }
|
---|
| 550 |
|
---|
| 551 | switch (fontWeight)
|
---|
| 552 | {
|
---|
| 553 | case "normal":
|
---|
| 554 | return FontWeights.Bold;
|
---|
| 555 | case "bold":
|
---|
| 556 | return FontWeights.ExtraBold;
|
---|
| 557 | case "100":
|
---|
| 558 | return FontWeights.ExtraLight;
|
---|
| 559 | case "200":
|
---|
| 560 | return FontWeights.Light;
|
---|
| 561 | case "300":
|
---|
| 562 | return FontWeights.Normal;
|
---|
| 563 | case "400":
|
---|
| 564 | return FontWeights.Bold;
|
---|
| 565 | case "500":
|
---|
| 566 | return FontWeights.SemiBold;
|
---|
| 567 | case "600":
|
---|
| 568 | return FontWeights.Bold;
|
---|
| 569 | case "700":
|
---|
| 570 | return FontWeights.ExtraBold;
|
---|
| 571 | case "800":
|
---|
| 572 | return FontWeights.Black;
|
---|
| 573 | case "900":
|
---|
| 574 | return FontWeights.UltraBlack;
|
---|
| 575 | case "950":
|
---|
| 576 | return FontWeights.UltraBlack;
|
---|
| 577 | }
|
---|
| 578 |
|
---|
| 579 | return FontWeights.Normal;
|
---|
| 580 | }
|
---|
| 581 |
|
---|
| 582 | protected FontWeight GetLighterFontWeight(string fontWeight)
|
---|
| 583 | {
|
---|
| 584 | if (String.IsNullOrEmpty(fontWeight))
|
---|
| 585 | {
|
---|
| 586 | return FontWeights.Normal;
|
---|
| 587 | }
|
---|
| 588 |
|
---|
| 589 | switch (fontWeight)
|
---|
| 590 | {
|
---|
| 591 | case "normal":
|
---|
| 592 | return FontWeights.Light;
|
---|
| 593 | case "bold":
|
---|
| 594 | return FontWeights.Normal;
|
---|
| 595 |
|
---|
| 596 | case "100":
|
---|
| 597 | return FontWeights.Thin;
|
---|
| 598 | case "200":
|
---|
| 599 | return FontWeights.Thin;
|
---|
| 600 | case "300":
|
---|
| 601 | return FontWeights.ExtraLight;
|
---|
| 602 | case "400":
|
---|
| 603 | return FontWeights.Light;
|
---|
| 604 | case "500":
|
---|
| 605 | return FontWeights.Normal;
|
---|
| 606 | case "600":
|
---|
| 607 | return FontWeights.Medium;
|
---|
| 608 | case "700":
|
---|
| 609 | return FontWeights.SemiBold;
|
---|
| 610 | case "800":
|
---|
| 611 | return FontWeights.Bold;
|
---|
| 612 | case "900":
|
---|
| 613 | return FontWeights.ExtraBold;
|
---|
| 614 | case "950":
|
---|
| 615 | return FontWeights.Black;
|
---|
| 616 | }
|
---|
| 617 |
|
---|
| 618 | return FontWeights.Normal;
|
---|
| 619 | }
|
---|
| 620 |
|
---|
| 621 | #endregion
|
---|
| 622 |
|
---|
| 623 | #region FontStyle/Stretch Methods
|
---|
| 624 |
|
---|
| 625 | protected FontStyle GetTextFontStyle(SvgTextContentElement element)
|
---|
| 626 | {
|
---|
| 627 | string fontStyle = element.GetPropertyValue("font-style");
|
---|
| 628 | if (String.IsNullOrEmpty(fontStyle))
|
---|
| 629 | {
|
---|
| 630 | return FontStyles.Normal;
|
---|
| 631 | }
|
---|
| 632 |
|
---|
| 633 | if (fontStyle == "normal")
|
---|
| 634 | {
|
---|
| 635 | return FontStyles.Normal;
|
---|
| 636 | }
|
---|
| 637 | if (fontStyle == "italic")
|
---|
| 638 | {
|
---|
| 639 | return FontStyles.Italic;
|
---|
| 640 | }
|
---|
| 641 | if (fontStyle == "oblique")
|
---|
| 642 | {
|
---|
| 643 | return FontStyles.Oblique;
|
---|
| 644 | }
|
---|
| 645 |
|
---|
| 646 | return FontStyles.Normal;
|
---|
| 647 | }
|
---|
| 648 |
|
---|
| 649 | protected FontStretch GetTextFontStretch(SvgTextContentElement element)
|
---|
| 650 | {
|
---|
| 651 | string fontStretch = element.GetPropertyValue("font-stretch");
|
---|
| 652 | if (String.IsNullOrEmpty(fontStretch))
|
---|
| 653 | {
|
---|
| 654 | return FontStretches.Normal;
|
---|
| 655 | }
|
---|
| 656 |
|
---|
| 657 | switch (fontStretch)
|
---|
| 658 | {
|
---|
| 659 | case "normal":
|
---|
| 660 | return FontStretches.Normal;
|
---|
| 661 | case "ultra-condensed":
|
---|
| 662 | return FontStretches.UltraCondensed;
|
---|
| 663 | case "extra-condensed":
|
---|
| 664 | return FontStretches.ExtraCondensed;
|
---|
| 665 | case "condensed":
|
---|
| 666 | return FontStretches.Condensed;
|
---|
| 667 | case "semi-condensed":
|
---|
| 668 | return FontStretches.SemiCondensed;
|
---|
| 669 | case "semi-expanded":
|
---|
| 670 | return FontStretches.SemiExpanded;
|
---|
| 671 | case "expanded":
|
---|
| 672 | return FontStretches.Expanded;
|
---|
| 673 | case "extra-expanded":
|
---|
| 674 | return FontStretches.ExtraExpanded;
|
---|
| 675 | case "ultra-expanded":
|
---|
| 676 | return FontStretches.UltraExpanded;
|
---|
| 677 | }
|
---|
| 678 |
|
---|
| 679 | return FontStretches.Normal;
|
---|
| 680 | }
|
---|
| 681 |
|
---|
| 682 | #endregion
|
---|
| 683 |
|
---|
| 684 | #region Other Text/Font Attributes
|
---|
| 685 |
|
---|
| 686 | protected TextDecorationCollection GetTextDecoration(SvgTextContentElement element)
|
---|
| 687 | {
|
---|
| 688 | string textDeco = element.GetPropertyValue("text-decoration");
|
---|
| 689 | if (textDeco == "line-through")
|
---|
| 690 | {
|
---|
| 691 | return TextDecorations.Strikethrough;
|
---|
| 692 | }
|
---|
| 693 | if (textDeco == "underline")
|
---|
| 694 | {
|
---|
| 695 | return TextDecorations.Underline;
|
---|
| 696 | }
|
---|
| 697 | if (textDeco == "overline")
|
---|
| 698 | {
|
---|
| 699 | return TextDecorations.OverLine;
|
---|
| 700 | }
|
---|
| 701 |
|
---|
| 702 | return null;
|
---|
| 703 | }
|
---|
| 704 |
|
---|
| 705 | protected FontFamily GetTextFontFamily(SvgTextContentElement element, double fontSize)
|
---|
| 706 | {
|
---|
| 707 | _actualFontName = null;
|
---|
| 708 |
|
---|
| 709 | string fontFamily = element.GetPropertyValue("font-family");
|
---|
| 710 | string[] fontNames = fontNames = fontFamily.Split(new char[1] { ',' });
|
---|
| 711 |
|
---|
| 712 | FontFamily family;
|
---|
| 713 |
|
---|
| 714 | foreach (string fn in fontNames)
|
---|
| 715 | {
|
---|
| 716 | try
|
---|
| 717 | {
|
---|
| 718 | string fontName = fn.Trim(new char[] { ' ', '\'', '"' });
|
---|
| 719 |
|
---|
| 720 | if (String.Equals(fontName, "serif", StringComparison.OrdinalIgnoreCase))
|
---|
| 721 | {
|
---|
| 722 | family = WpfDrawingSettings.GenericSerif;
|
---|
| 723 | }
|
---|
| 724 | else if (String.Equals(fontName, "sans-serif", StringComparison.OrdinalIgnoreCase))
|
---|
| 725 | {
|
---|
| 726 | family = WpfDrawingSettings.GenericSansSerif;
|
---|
| 727 | }
|
---|
| 728 | else if (String.Equals(fontName, "monospace", StringComparison.OrdinalIgnoreCase))
|
---|
| 729 | {
|
---|
| 730 | family = WpfDrawingSettings.GenericMonospace;
|
---|
| 731 | }
|
---|
| 732 | else
|
---|
| 733 | {
|
---|
| 734 | family = new FontFamily(fontName);
|
---|
| 735 | _actualFontName = fontName;
|
---|
| 736 | }
|
---|
| 737 |
|
---|
| 738 | return family;
|
---|
| 739 | }
|
---|
| 740 | catch
|
---|
| 741 | {
|
---|
| 742 | }
|
---|
| 743 | }
|
---|
| 744 |
|
---|
| 745 | // no known font-family was found => default to Arial
|
---|
| 746 | return WpfDrawingSettings.DefaultFontFamily;
|
---|
| 747 | }
|
---|
| 748 |
|
---|
| 749 | protected WpfTextStringFormat GetTextStringFormat(SvgTextContentElement element)
|
---|
| 750 | {
|
---|
| 751 | WpfTextStringFormat sf = WpfTextStringFormat.Default;
|
---|
| 752 |
|
---|
| 753 | bool doAlign = true;
|
---|
| 754 | if (element is SvgTSpanElement || element is SvgTRefElement)
|
---|
| 755 | {
|
---|
| 756 | SvgTextPositioningElement posElement = (SvgTextPositioningElement)element;
|
---|
| 757 | if (posElement.X.AnimVal.NumberOfItems == 0)
|
---|
| 758 | doAlign = false;
|
---|
| 759 | }
|
---|
| 760 |
|
---|
| 761 | string dir = element.GetPropertyValue("direction");
|
---|
| 762 | bool isRightToLeft = (dir == "rtl");
|
---|
| 763 | sf.Direction = isRightToLeft ? FlowDirection.RightToLeft : FlowDirection.LeftToRight;
|
---|
| 764 |
|
---|
| 765 | if (doAlign)
|
---|
| 766 | {
|
---|
| 767 | string anchor = element.GetPropertyValue("text-anchor");
|
---|
| 768 |
|
---|
| 769 | if (isRightToLeft)
|
---|
| 770 | {
|
---|
| 771 | if (anchor == "middle")
|
---|
| 772 | sf.Anchor = WpfTextAnchor.Middle;
|
---|
| 773 | else if (anchor == "end")
|
---|
| 774 | sf.Anchor = WpfTextAnchor.Start;
|
---|
| 775 | else
|
---|
| 776 | sf.Anchor = WpfTextAnchor.End;
|
---|
| 777 | }
|
---|
| 778 | else
|
---|
| 779 | {
|
---|
| 780 | if (anchor == "middle")
|
---|
| 781 | sf.Anchor = WpfTextAnchor.Middle;
|
---|
| 782 | else if (anchor == "end")
|
---|
| 783 | sf.Anchor = WpfTextAnchor.End;
|
---|
| 784 | }
|
---|
| 785 | }
|
---|
| 786 | else
|
---|
| 787 | {
|
---|
| 788 | SvgTextElement textElement = element.ParentNode as SvgTextElement;
|
---|
| 789 | if (textElement != null)
|
---|
| 790 | {
|
---|
| 791 | string anchor = textElement.GetPropertyValue("text-anchor");
|
---|
| 792 | if (isRightToLeft)
|
---|
| 793 | {
|
---|
| 794 | if (anchor == "middle")
|
---|
| 795 | sf.Anchor = WpfTextAnchor.Middle;
|
---|
| 796 | else if (anchor == "end")
|
---|
| 797 | sf.Anchor = WpfTextAnchor.Start;
|
---|
| 798 | else
|
---|
| 799 | sf.Anchor = WpfTextAnchor.End;
|
---|
| 800 | }
|
---|
| 801 | else
|
---|
| 802 | {
|
---|
| 803 | if (anchor == "middle")
|
---|
| 804 | sf.Anchor = WpfTextAnchor.Middle;
|
---|
| 805 | else if (anchor == "end")
|
---|
| 806 | sf.Anchor = WpfTextAnchor.End;
|
---|
| 807 | }
|
---|
| 808 | }
|
---|
| 809 | }
|
---|
| 810 |
|
---|
| 811 | //if (isRightToLeft)
|
---|
| 812 | //{
|
---|
| 813 | // if (sf.Alignment == TextAlignment.Right)
|
---|
| 814 | // sf.Alignment = TextAlignment.Left;
|
---|
| 815 | // else if (sf.Alignment == TextAlignment.Left)
|
---|
| 816 | // sf.Alignment = TextAlignment.Right;
|
---|
| 817 |
|
---|
| 818 | // //sf.FormatFlags = StringFormatFlags.DirectionRightToLeft;
|
---|
| 819 | //}
|
---|
| 820 |
|
---|
| 821 | //dir = element.GetPropertyValue("writing-mode");
|
---|
| 822 | //if (dir == "tb")
|
---|
| 823 | //{
|
---|
| 824 | // sf.FormatFlags = sf.FormatFlags | StringFormatFlags.DirectionVertical;
|
---|
| 825 | //}
|
---|
| 826 |
|
---|
| 827 | //sf.FormatFlags = sf.FormatFlags | StringFormatFlags.MeasureTrailingSpaces;
|
---|
| 828 |
|
---|
| 829 | return sf;
|
---|
| 830 | }
|
---|
| 831 |
|
---|
| 832 | #endregion
|
---|
| 833 |
|
---|
| 834 | #endregion
|
---|
| 835 | }
|
---|
| 836 | }
|
---|