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":
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503 | return FontWeights.SemiBold;
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504 | case "700":
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505 | return FontWeights.Bold;
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506 | case "800":
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507 | return FontWeights.ExtraBold;
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508 | case "900":
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509 | return FontWeights.Black;
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510 | case "950":
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511 | return FontWeights.UltraBlack;
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512 | }
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513 |
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514 | if (String.Equals(fontWeight, "bolder", StringComparison.OrdinalIgnoreCase))
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515 | {
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516 | SvgTransformableElement parentElement = element.ParentNode as SvgTransformableElement;
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517 | if (parentElement != null)
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518 | {
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519 | fontWeight = parentElement.GetPropertyValue("font-weight");
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520 | if (!String.IsNullOrEmpty(fontWeight))
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521 | {
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522 | return this.GetBolderFontWeight(fontWeight);
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523 | }
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524 | }
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525 | return FontWeights.ExtraBold;
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526 | }
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527 | if (String.Equals(fontWeight, "lighter", StringComparison.OrdinalIgnoreCase))
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528 | {
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529 | SvgTransformableElement parentElement = element.ParentNode as SvgTransformableElement;
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530 | if (parentElement != null)
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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 | }
|
---|