1 | /*
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2 | * SVG Salamander
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3 | * Copyright (c) 2004, Mark McKay
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4 | * All rights reserved.
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5 | *
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6 | * Redistribution and use in source and binary forms, with or
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7 | * without modification, are permitted provided that the following
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8 | * conditions are met:
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9 | *
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10 | * - Redistributions of source code must retain the above
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11 | * copyright notice, this list of conditions and the following
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12 | * disclaimer.
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13 | * - Redistributions in binary form must reproduce the above
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14 | * copyright notice, this list of conditions and the following
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15 | * disclaimer in the documentation and/or other materials
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16 | * provided with the distribution.
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17 | *
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18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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19 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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20 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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21 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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22 | * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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23 | * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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24 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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25 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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27 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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29 | * OF THE POSSIBILITY OF SUCH DAMAGE.
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30 | *
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31 | * Mark McKay can be contacted at mark@kitfox.com. Salamander and other
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32 | * projects can be found at http://www.kitfox.com
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33 | *
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34 | * Created on January 26, 2004, 1:56 AM
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35 | */
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36 | package com.kitfox.svg;
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37 |
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38 | import com.kitfox.svg.xml.StyleAttribute;
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39 | import java.awt.Graphics2D;
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40 | import java.awt.Shape;
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41 | import java.awt.font.FontRenderContext;
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42 | import java.awt.font.GlyphMetrics;
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43 | import java.awt.font.GlyphVector;
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44 | import java.awt.geom.AffineTransform;
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45 | import java.awt.geom.GeneralPath;
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46 | import java.awt.geom.Rectangle2D;
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47 |
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48 | /**
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49 | * @author Mark McKay
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50 | * @author <a href="mailto:mark@kitfox.com">Mark McKay</a>
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51 | */
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52 | public class Tspan extends ShapeElement
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53 | {
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54 |
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55 | public static final String TAG_NAME = "tspan";
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56 | float[] x = null;
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57 | float[] y = null;
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58 | float[] dx = null;
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59 | float[] dy = null;
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60 | float[] rotate = null;
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61 | private String text = "";
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62 | float cursorX;
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63 | float cursorY;
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64 |
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65 | // Shape tspanShape;
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66 | /**
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67 | * Creates a new instance of Stop
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68 | */
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69 | public Tspan()
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70 | {
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71 | }
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72 |
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73 | public String getTagName()
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74 | {
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75 | return TAG_NAME;
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76 | }
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77 |
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78 | public float getCursorX()
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79 | {
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80 | return cursorX;
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81 | }
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82 |
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83 | public float getCursorY()
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84 | {
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85 | return cursorY;
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86 | }
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87 |
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88 | public void setCursorX(float cursorX)
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89 | {
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90 | this.cursorX = cursorX;
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91 | }
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92 |
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93 | public void setCursorY(float cursorY)
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94 | {
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95 | this.cursorY = cursorY;
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96 | }
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97 | /*
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98 | public void loaderStartElement(SVGLoaderHelper helper, Attributes attrs, SVGElement parent)
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99 | {
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100 | //Load style string
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101 | super.loaderStartElement(helper, attrs, parent);
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102 |
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103 | String x = attrs.getValue("x");
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104 | String y = attrs.getValue("y");
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105 | String dx = attrs.getValue("dx");
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106 | String dy = attrs.getValue("dy");
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107 | String rotate = attrs.getValue("rotate");
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108 |
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109 | if (x != null) this.x = XMLParseUtil.parseFloatList(x);
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110 | if (y != null) this.y = XMLParseUtil.parseFloatList(y);
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111 | if (dx != null) this.dx = XMLParseUtil.parseFloatList(dx);
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112 | if (dy != null) this.dy = XMLParseUtil.parseFloatList(dy);
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113 | if (rotate != null)
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114 | {
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115 | this.rotate = XMLParseUtil.parseFloatList(rotate);
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116 | for (int i = 0; i < this.rotate.length; i++)
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117 | this.rotate[i] = (float)Math.toRadians(this.rotate[i]);
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118 | }
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119 | }
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120 | */
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121 |
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122 | /**
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123 | * Called during load process to add text scanned within a tag
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124 | */
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125 | public void loaderAddText(SVGLoaderHelper helper, String text)
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126 | {
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127 | this.text += text;
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128 | }
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129 |
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130 | protected void build() throws SVGException
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131 | {
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132 | super.build();
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133 |
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134 | StyleAttribute sty = new StyleAttribute();
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135 |
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136 | if (getPres(sty.setName("x")))
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137 | {
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138 | x = sty.getFloatList();
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139 | }
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140 |
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141 | if (getPres(sty.setName("y")))
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142 | {
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143 | y = sty.getFloatList();
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144 | }
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145 |
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146 | if (getPres(sty.setName("dx")))
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147 | {
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148 | dx = sty.getFloatList();
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149 | }
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150 |
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151 | if (getPres(sty.setName("dy")))
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152 | {
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153 | dy = sty.getFloatList();
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154 | }
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155 |
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156 | if (getPres(sty.setName("rotate")))
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157 | {
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158 | rotate = sty.getFloatList();
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159 | for (int i = 0; i < this.rotate.length; i++)
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160 | {
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161 | rotate[i] = (float) Math.toRadians(this.rotate[i]);
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162 | }
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163 |
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164 | }
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165 | }
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166 |
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167 | public void addShape(GeneralPath addShape) throws SVGException
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168 | {
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169 | if (x != null)
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170 | {
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171 | cursorX = x[0];
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172 | } else if (dx != null)
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173 | {
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174 | cursorX += dx[0];
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175 | }
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176 |
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177 | if (y != null)
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178 | {
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179 | cursorY = y[0];
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180 | } else if (dy != null)
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181 | {
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182 | cursorY += dy[0];
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183 | }
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184 |
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185 | StyleAttribute sty = new StyleAttribute();
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186 |
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187 | String fontFamily = null;
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188 | if (getStyle(sty.setName("font-family")))
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189 | {
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190 | fontFamily = sty.getStringValue();
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191 | }
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192 |
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193 |
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194 | float fontSize = 12f;
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195 | if (getStyle(sty.setName("font-size")))
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196 | {
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197 | fontSize = sty.getFloatValueWithUnits();
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198 | }
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199 |
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200 | float letterSpacing = 0;
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201 | if (getStyle(sty.setName("letter-spacing")))
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202 | {
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203 | letterSpacing = sty.getFloatValueWithUnits();
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204 | }
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205 |
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206 |
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207 | //Get font
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208 | Font font = diagram.getUniverse().getFont(fontFamily);
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209 | if (font == null)
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210 | {
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211 | addShapeSysFont(addShape, font, fontFamily, fontSize, letterSpacing);
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212 | return;
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213 | }
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214 |
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215 | FontFace fontFace = font.getFontFace();
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216 | int ascent = fontFace.getAscent();
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217 | float fontScale = fontSize / (float) ascent;
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218 |
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219 | AffineTransform xform = new AffineTransform();
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220 |
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221 | strokeWidthScalar = 1f / fontScale;
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222 |
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223 | int posPtr = 1;
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224 |
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225 | for (int i = 0; i < text.length(); i++)
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226 | {
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227 | xform.setToIdentity();
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228 | xform.setToTranslation(cursorX, cursorY);
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229 | xform.scale(fontScale, fontScale);
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230 | if (rotate != null)
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231 | {
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232 | xform.rotate(rotate[posPtr]);
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233 | }
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234 |
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235 | String unicode = text.substring(i, i + 1);
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236 | MissingGlyph glyph = font.getGlyph(unicode);
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237 |
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238 | Shape path = glyph.getPath();
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239 | if (path != null)
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240 | {
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241 | path = xform.createTransformedShape(path);
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242 | addShape.append(path, false);
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243 | }
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244 |
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245 | if (x != null && posPtr < x.length)
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246 | {
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247 | cursorX = x[posPtr];
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248 | cursorY = y[posPtr++];
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249 | } else if (dx != null && posPtr < dx.length)
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250 | {
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251 | cursorX += dx[posPtr];
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252 | cursorY += dy[posPtr++];
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253 | }
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254 |
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255 | cursorX += fontScale * glyph.getHorizAdvX() + letterSpacing;
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256 | }
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257 |
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258 | strokeWidthScalar = 1f;
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259 | }
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260 |
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261 | private void addShapeSysFont(GeneralPath addShape, Font font,
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262 | String fontFamily, float fontSize, float letterSpacing)
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263 | {
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264 | java.awt.Font sysFont = new java.awt.Font(fontFamily, java.awt.Font.PLAIN, (int) fontSize);
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265 |
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266 | FontRenderContext frc = new FontRenderContext(null, true, true);
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267 | GlyphVector textVector = sysFont.createGlyphVector(frc, text);
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268 |
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269 | AffineTransform xform = new AffineTransform();
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270 |
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271 | int posPtr = 1;
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272 | for (int i = 0; i < text.length(); i++)
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273 | {
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274 | xform.setToIdentity();
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275 | xform.setToTranslation(cursorX + i * letterSpacing, cursorY);
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276 | if (rotate != null)
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277 | {
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278 | xform.rotate(rotate[Math.min(i, rotate.length - 1)]);
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279 | }
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280 |
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281 | String unicode = text.substring(i, i + 1);
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282 | Shape glyphOutline = textVector.getGlyphOutline(i);
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283 | GlyphMetrics glyphMetrics = textVector.getGlyphMetrics(i);
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284 |
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285 | glyphOutline = xform.createTransformedShape(glyphOutline);
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286 | addShape.append(glyphOutline, false);
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287 |
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288 | if (x != null && posPtr < x.length)
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289 | {
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290 | cursorX = x[posPtr];
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291 | cursorY = y[posPtr++];
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292 | } else if (dx != null && posPtr < dx.length)
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293 | {
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294 | cursorX += dx[posPtr];
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295 | cursorY += dy[posPtr++];
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296 | }
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297 | }
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298 | }
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299 |
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300 | public void render(Graphics2D g) throws SVGException
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301 | {
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302 | if (x != null)
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303 | {
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304 | cursorX = x[0];
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305 | cursorY = y[0];
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306 | } else if (dx != null)
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307 | {
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308 | cursorX += dx[0];
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309 | cursorY += dy[0];
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310 | }
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311 |
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312 | StyleAttribute sty = new StyleAttribute();
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313 |
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314 | String fontFamily = null;
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315 | if (getPres(sty.setName("font-family")))
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316 | {
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317 | fontFamily = sty.getStringValue();
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318 | }
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319 |
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320 |
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321 | float fontSize = 12f;
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322 | if (getPres(sty.setName("font-size")))
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323 | {
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324 | fontSize = sty.getFloatValueWithUnits();
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325 | }
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326 |
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327 | //Get font
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328 | Font font = diagram.getUniverse().getFont(fontFamily);
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329 | if (font == null)
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330 | {
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331 | System.err.println("Could not load font");
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332 | java.awt.Font sysFont = new java.awt.Font(fontFamily, java.awt.Font.PLAIN, (int) fontSize);
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333 | renderSysFont(g, sysFont);
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334 | return;
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335 | }
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336 |
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337 |
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338 | FontFace fontFace = font.getFontFace();
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339 | int ascent = fontFace.getAscent();
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340 | float fontScale = fontSize / (float) ascent;
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341 |
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342 | AffineTransform oldXform = g.getTransform();
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343 | AffineTransform xform = new AffineTransform();
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344 |
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345 | strokeWidthScalar = 1f / fontScale;
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346 |
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347 | int posPtr = 1;
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348 |
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349 | for (int i = 0; i < text.length(); i++)
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350 | {
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351 | xform.setToTranslation(cursorX, cursorY);
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352 | xform.scale(fontScale, fontScale);
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353 | g.transform(xform);
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354 |
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355 | String unicode = text.substring(i, i + 1);
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356 | MissingGlyph glyph = font.getGlyph(unicode);
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357 |
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358 | Shape path = glyph.getPath();
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359 | if (path != null)
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360 | {
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361 | renderShape(g, path);
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362 | } else
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363 | {
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364 | glyph.render(g);
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365 | }
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366 |
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367 | if (x != null && posPtr < x.length)
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368 | {
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369 | cursorX = x[posPtr];
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370 | cursorY = y[posPtr++];
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371 | } else if (dx != null && posPtr < dx.length)
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372 | {
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373 | cursorX += dx[posPtr];
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374 | cursorY += dy[posPtr++];
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375 | }
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376 |
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377 | cursorX += fontScale * glyph.getHorizAdvX();
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378 |
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379 | g.setTransform(oldXform);
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380 | }
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381 |
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382 | strokeWidthScalar = 1f;
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383 | }
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384 |
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385 | protected void renderSysFont(Graphics2D g, java.awt.Font font) throws SVGException
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386 | {
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387 | int posPtr = 1;
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388 | FontRenderContext frc = g.getFontRenderContext();
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389 |
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390 | Shape textShape = font.createGlyphVector(frc, text).getOutline(cursorX, cursorY);
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391 | renderShape(g, textShape);
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392 | Rectangle2D rect = font.getStringBounds(text, frc);
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393 | cursorX += (float) rect.getWidth();
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394 | }
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395 |
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396 | public Shape getShape()
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397 | {
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398 | return null;
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399 | //return shapeToParent(tspanShape);
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400 | }
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401 |
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402 | public Rectangle2D getBoundingBox()
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403 | {
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404 | return null;
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405 | //return boundsToParent(tspanShape.getBounds2D());
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406 | }
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407 |
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408 | /**
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409 | * Updates all attributes in this diagram associated with a time event. Ie,
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410 | * all attributes with track information.
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411 | *
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412 | * @return - true if this node has changed state as a result of the time
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413 | * update
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414 | */
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415 | public boolean updateTime(double curTime) throws SVGException
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416 | {
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417 | //Tspan does not change
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418 | return false;
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419 | }
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420 |
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421 | public String getText()
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422 | {
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423 | return text;
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424 | }
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425 |
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426 | public void setText(String text)
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427 | {
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428 | this.text = text;
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429 | }
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430 | }
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