Mercurial > MadButterfly

annotate nodejs/svg.js @ 625:9f2080b68f8e

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Add the text style parser. This can not handle the recursive tspan yet.
author wycc
date Fri, 16 Jul 2010 04:04:53 +0800
parents d45c928f6523
children 01e960bfc9ff
rev   line source
624
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1 var libxml = require('libxmljs');
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2 var sys=require('sys');
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3 var mbfly = require("mbfly");
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4 var mb_rt = new mbfly.mb_rt(":0.0", 720,480);
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5
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6 function MB_loadSVG(mb_rt,root,filename) {
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7 var doc = libxml.parseXmlFile(filename);
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8 var nodes = doc.root().childNodes();
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9 var coord = mb_rt.coord_new(root);
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10 var k;
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11
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12 for(k in nodes) {
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13 var n = nodes[k].name();
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14 if (n == "defs") {
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15 _MB_parseDefs(root,nodes[k]);
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16 } else if (n == "g") {
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17 _MB_parseGroup(root,'root_coord',nodes[k]);
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18 }
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19 }
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20 }
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21
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22 function getInteger(n,name)
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23 {
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24 if (n == null) return 0;
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25 var a = n.attr(name);
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26 if (a==null) return 0;
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27 return parseInt(a.value());
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28 }
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29
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30 function parseTextStyle(obj,n)
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31 {
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32 var attr;
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33 if (n) {
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34 attr = n.attr('style');
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35 } else {
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36 attr = null;
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37 }
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38 var fs = 20;
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39 var family="ciurier";
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40 if (attr == null) {
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41 var paint = mb_rt.paint_color_new(1,1,1,1);
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42 var face=mb_rt.font_face_query(family, 2, 100);
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43 obj.set_style([[20,face,fs]]);
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44 return paint;
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45 }
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46 var f = attr.value().split(';');
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47
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48 for(i in f) {
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49 var kv = f[i].split(':');
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50 if (kv[0] == 'font-size') {
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51 fs = parsePointSize(kv[1]);
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52 } else if (kv[0] == "font-style") {
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53 } else if (kv[0] == "font-weight") {
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54 } else if (kv[0] == "fill") {
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55 } else if (kv[0] == "fill-opacity") {
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56 } else if (kv[0] == "stroke") {
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57 } else if (kv[0] == "stroke-width") {
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58 } else if (kv[0] == "stroke-linecap") {
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59 } else if (kv[0] == "stroke-linejoin") {
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60 } else if (kv[0] == "stroke-lineopacity") {
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61 } else if (kv[0] == "font-family") {
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62 } else if (kv[0] == "font-stretch") {
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63 } else if (kv[0] == "font-variant") {
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64 } else if (kv[0] == "text-anchor") {
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65 } else if (kv[0] == "text-align") {
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66 } else if (kv[0] == "writing-mode") {
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67 } else if (kv[0] == "line-height") {
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68 sys.puts("Unknown style: "+kv[0]);
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69 }
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70 }
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71 var paint = mb_rt.paint_color_new(1,1,1,1);
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72 var face=mb_rt.font_face_query(family, 2, 100);
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73 obj.set_style([[20,face,fs]]);
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74 return paint;
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75 }
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76
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77 function _MB_parseTSpan(coord, n)
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78 {
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79 var x = getInteger(n,'x');
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80 var y = getInteger(n,'y');
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81 var tcoord = mb_rt.coord_new(coord);
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82 var nodes = n.childNodes();
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83 var k;
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84
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85 sys.puts(n.text());
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86 var obj = mb_rt.stext_new(n.text(),x,y);
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87 var paint = parseTextStyle(obj,n);
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88 paint.fill(obj);
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89 tcoord.add_shape(obj);
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90 for(k in nodes) {
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91 var name = nodes[k].name();
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92 if (name == "tspan") {
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93 _MB_parseTSpan(tcoord,nodes[k]);
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94 } else {
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95 }
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96 }
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97 }
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98
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99 function _MB_parseText(coord,id, n)
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100 {
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101 var x = getInteger(n,'x');
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102 var y = getInteger(n,'y');
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103 var tcoord = mb_rt.coord_new(coord);
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104 //var paint = parseTextStyle(n);
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105 var nodes = n.childNodes();
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106 var k;
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107 for(k in nodes) {
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108 var n = nodes[k].name();
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109 if (n == "tspan") {
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110 _MB_parseTSpan(tcoord,nodes[k]);
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111 } else {
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112 }
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113 }
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114
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115
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116 }
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117
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118
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119 function parseTransform(coord, s)
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120 {
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121 var off = s.indexOf('translate');
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122 if (off != -1) {
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123 var ss = s.substring(off+9);
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124 for(i=0;i<ss.length;i++) {
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125 if (ss[i] == '(') break;
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126 }
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127 ss = ss.substring(i+1);
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128 for(i=0;i<ss.length;i++) {
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129 if (ss[i] == ')') {
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130 ss = ss.substring(0,i);
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131 break;
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132 }
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133 }
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134 var f = ss.split(',');
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135 var x,y;
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136 x = parseInt(f[0]);
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137 y = parseInt(f[1]);
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138 coord[2] = x;
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139 coord[5] = y;
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140 }
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141 off = s.indexOf('matrix');
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142 if (off != -1) {
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143 sys.puts("matrix");
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144 }
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145 }
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146
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147 function _MB_parseRect(coord, id, n)
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148 {
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149
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150 }
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151
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152 function _MB_parseGroup(root, group_id, n)
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153 {
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154 var k;
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155 var nodes = n.childNodes();
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156 var coord = mb_rt.coord_new(root);
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157 // Parse the transform and style here
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158 var trans = n.attr('transform');
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159 if (trans!=null) {
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160 parseTransform(coord, trans.value());
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161 }
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162
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163 for(k in nodes) {
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164 var n = nodes[k].name();
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165 var attr = nodes[k].attr('id');
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166 var id;
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167 if (attr) {
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168 id = attr.value();
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169 }
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170 if (n == "g") {
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171 _MB_parseGroup(coord, id, nodes[k]);
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172 } else if (n == "text") {
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173 _MB_parseText(coord, id, nodes[k]);
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174 } else if (n == "rect") {
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175 _MB_parseRect(coord, id, nodes[k]);
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176 }
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177 }
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178
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179 }
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180
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181
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182 function _MB_parseDefs(root,n)
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183 {
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184 var k;
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185 var nodes = n.childNodes();
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186
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187 for(k in nodes) {
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188 var name = nodes[k].name();
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189 if (name == "linearGradient") {
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190 //_MB_parseLinearGradient(root,nodes[k]);
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191 }
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192 }
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193 }
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194
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195
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196 MB_loadSVG(mb_rt,mb_rt.root,"test.svg");
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197 mb_rt.redraw_all();