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comparison nodejs/svg.js @ 624:d45c928f6523

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Add SVG parser sample code.
author wycc
date Thu, 15 Jul 2010 22:34:04 +0800
parents
children 9f2080b68f8e
comparison
equal deleted inserted replaced
577:d561b2415711 624:d45c928f6523
1 var libxml = require('libxmljs');
2 var sys=require('sys');
3 var mbfly = require("mbfly");
4 var mb_rt = new mbfly.mb_rt(":0.0", 720,480);
5
6 function MB_loadSVG(mb_rt,root,filename) {
7 var doc = libxml.parseXmlFile(filename);
8 var nodes = doc.root().childNodes();
9 var coord = mb_rt.coord_new(root);
10 var k;
11
12 for(k in nodes) {
13 var n = nodes[k].name();
14 if (n == "defs") {
15 _MB_parseDefs(root,nodes[k]);
16 } else if (n == "g") {
17 _MB_parseGroup(root,'root_coord',nodes[k]);
18 }
19 }
20 }
21
22 function getInteger(n,name)
23 {
24 if (n == null) return 0;
25 var a = n.attr(name);
26 if (a==null) return 0;
27 return parseInt(a.value());
28 }
29
30 function parseStyle(n)
31 {
32 }
33
34 function _MB_parseTSpan(coord, n)
35 {
36 var x = getInteger(n,'x');
37 var y = getInteger(n,'y');
38 var tcoord = mb_rt.coord_new(coord);
39 var paint = parseStyle(n);
40 var nodes = n.childNodes();
41 var k;
42
43 sys.puts(n.text());
44 var obj = mb_rt.stext_new(n.text(),x,y);
45 var paint = mb_rt.paint_color_new(1,1,1,1);
46 var face=mb_rt.font_face_query("courier", 2, 100);
47 obj.set_style([[5,face,20]]);
48 paint.fill(obj);
49 tcoord.add_shape(obj);
50 for(k in nodes) {
51 var name = nodes[k].name();
52 if (name == "tspan") {
53 _MB_parseTSpan(tcoord,nodes[k]);
54 } else {
55 }
56 }
57 }
58
59 function _MB_parseText(coord,id, n)
60 {
61 var x = getInteger(n,'x');
62 var y = getInteger(n,'y');
63 var tcoord = mb_rt.coord_new(coord);
64 var paint = parseStyle(n);
65 var nodes = n.childNodes();
66 var k;
67 for(k in nodes) {
68 var n = nodes[k].name();
69 if (n == "tspan") {
70 _MB_parseTSpan(tcoord,nodes[k]);
71 } else {
72 }
73 }
74
75
76 }
77
78
79 function parseTransform(coord, s)
80 {
81 var off = s.indexOf('translate');
82 if (off != -1) {
83 var ss = s.substring(off+9);
84 for(i=0;i<ss.length;i++) {
85 if (ss[i] == '(') break;
86 }
87 ss = ss.substring(i+1);
88 for(i=0;i<ss.length;i++) {
89 if (ss[i] == ')') {
90 ss = ss.substring(0,i);
91 break;
92 }
93 }
94 var f = ss.split(',');
95 var x,y;
96 x = parseInt(f[0]);
97 y = parseInt(f[1]);
98 coord[2] = x;
99 coord[5] = y;
100 }
101 off = s.indexOf('matrix');
102 if (off != -1) {
103 sys.puts("matrix");
104 }
105 }
106
107 function _MB_parseRect(coord, id, n)
108 {
109
110 }
111
112 function _MB_parseGroup(root, group_id, n)
113 {
114 var k;
115 var nodes = n.childNodes();
116 var coord = mb_rt.coord_new(root);
117 // Parse the transform and style here
118 var trans = n.attr('transform');
119 if (trans!=null) {
120 parseTransform(coord, trans.value());
121 }
122
123 for(k in nodes) {
124 var n = nodes[k].name();
125 var attr = nodes[k].attr('id');
126 var id;
127 if (attr) {
128 id = attr.value();
129 }
130 if (n == "g") {
131 _MB_parseGroup(coord, id, nodes[k]);
132 } else if (n == "text") {
133 _MB_parseText(coord, id, nodes[k]);
134 } else if (n == "rect") {
135 _MB_parseRect(coord, id, nodes[k]);
136 }
137 }
138
139 }
140
141
142 function _MB_parseDefs(root,n)
143 {
144 var k;
145 var nodes = n.childNodes();
146
147 for(k in nodes) {
148 var name = nodes[k].name();
149 if (name == "linearGradient") {
150 //_MB_parseLinearGradient(root,nodes[k]);
151 }
152 }
153 }
154
155
156 MB_loadSVG(mb_rt,mb_rt.root,"test.svg");
157 mb_rt.redraw_all();