private static SketchDocument importSVG(InputStream stream) throws Exception {
SketchDocument sdoc = new SketchDocument();
sdoc.removePage(sdoc.getCurrentPage());
SketchDocument.SketchPage page = sdoc.addPage();
u.p("parsing");
Doc doc = XMLParser.parse(stream);
u.p("parsed");
Elem svg = doc.xpathElement("/svg");
for (Elem n : svg.xpath("./*")) {
u.p("node = " + n + " " + n.name());
SNode node = loadNode(n);
if (node != null) page.add(node);
}
return sdoc;
}
private static void parseFill(SShape shape, Elem root) {
if (!root.hasAttr("fill")) {
shape.setFillPaint(FlatColor.BLACK);
return;
}
String sfill = root.attr("fill");
if (sfill.equals("none")) {
shape.setFillPaint(null);
return;
}
if (sfill.startsWith("#")) {
shape.setFillPaint(new FlatColor(sfill));
return;
}
u.p("trouble parsing fill: " + sfill);
}
private static void parseStroke(SShape shape, Elem root) {
if (!root.hasAttr("stroke")) {
shape.setStrokeWidth(1);
shape.setStrokePaint(null);
}
String sstroke = root.attr("stroke");
if (sstroke.equals("none")) {
shape.setStrokePaint(null);
}
if (sstroke.startsWith("#")) {
shape.setStrokePaint(new FlatColor(sstroke));
}
if (!root.hasAttr("stroke-width")) {
shape.setStrokeWidth(1);
} else {
String sstrokeWidth = root.attr("stroke-width");
double strokeWidth = Double.parseDouble(sstrokeWidth);
shape.setStrokeWidth(strokeWidth);
}
}
private static SNode loadNode(Elem root) throws Exception {
u.p("loading SVG element: " + root.name());
if ("g".equals(root.name())) {
SGroup g = new SGroup();
for (Elem n : root.xpath("./*")) {
SNode nn = loadNode(n);
if (nn != null) g.addAll(false, nn);
}
g.normalize();
return g;
}
if ("rect".equals(root.name())) {
SRect rect = new SRect();
rect.setX(Double.parseDouble(root.attr("x")));
rect.setY(Double.parseDouble(root.attr("y")));
parseFill(rect, root);
parseStroke(rect, root);
rect.setWidth(Double.parseDouble(root.attr("width")));
rect.setHeight(Double.parseDouble(root.attr("height")));
return rect;
}
if ("line".equals(root.name())) {
SPoly poly = new SPoly();
double x1 = Double.parseDouble(root.attr("x1"));
double y1 = Double.parseDouble(root.attr("y1"));
double x2 = Double.parseDouble(root.attr("x2"));
double y2 = Double.parseDouble(root.attr("y2"));
poly.addPoint(new Point2D.Double(x1, y1));
poly.addPoint(new Point2D.Double(x2, y2));
poly.setClosed(false);
parseFill(poly, root);
parseStroke(poly, root);
return poly;
}
if ("polygon".equals(root.name()) || "polyline".equals(root.name())) {
String pointsString = root.attr("points");
String[] points = pointsString.split("\\s");
SPoly poly = new SPoly();
for (String pt : points) {
if (pt != null && pt.trim().equals("")) continue;
String[] xy = pt.split(",");
poly.addPoint(new Point2D.Double(Double.parseDouble(xy[0]), Double.parseDouble(xy[1])));
}
// the polygon is closed, poly lines aren't
poly.setClosed("polygon".equals(root.name()));
parseFill(poly, root);
parseStroke(poly, root);
return poly;
}
if ("path".equals(root.name())) {
return parsePathNode(root);
}
Exception ex = new Exception("unrecognized SVG element: " + root.name());
u.p(ex);
return null;
}
private static SNode parsePathNode(Elem root) throws IOException {
SPath path = new SPath();
String d = root.attr("d");
PushbackReader read = new PushbackReader(new StringReader(d));
int count = 0;
double x = 0;
double y = 0;
SPath.PathPoint prev = null;
boolean go = true;
while (go) {
count++;
char ch = (char) read.read();
if (ch == -1) break;
double x1, x2, y1, y2;
u.p("ch = " + ch);
switch (ch) {
// absolute move
case 'M':
x = readDouble(read);
y = readDouble(read);
prev = path.moveTo(x, y);
continue;
// relative vertical lineto
case 'v':
y += readDouble(read);
prev = path.lineTo(x, y);
continue;
// absolute vertical lineto
case 'V':
y = readDouble(read);
prev = path.lineTo(x, y);
continue;
// relative horiz lineto
case 'h':
x += readDouble(read);
prev = path.lineTo(x, y);
continue;
case 'H':
x = readDouble(read);
prev = path.lineTo(x, y);
continue;
// relative lineto
case 'l':
x += readDouble(read);
y += readDouble(read);
prev = path.lineTo(x, y);
continue;
case 'L':
x = readDouble(read);
y = readDouble(read);
prev = path.lineTo(x, y);
continue;
// relative cubic curve
case 'c':
x1 = x + readDouble(read);
y1 = y + readDouble(read);
x2 = x + readDouble(read);
y2 = y + readDouble(read);
x += readDouble(read);
y += readDouble(read);
prev = path.curveTo(prev, x1, y1, x2, y2, x, y);
continue;
// relative shorthand curve
case 's':
x2 = x + readDouble(read);
y2 = y + readDouble(read);
x += readDouble(read);
y += readDouble(read);
double dx = prev.x - prev.cx1;
double dy = prev.y - prev.cy1;
double rx = prev.x + dx;
double ry = prev.y + dy;
prev = path.curveTo(prev, rx, ry, x2, y2, x, y);
continue;
// absolute cubic curve
case 'C':
x1 = readDouble(read);
y1 = readDouble(read);
x2 = readDouble(read);
y2 = readDouble(read);
x = readDouble(read);
y = readDouble(read);
prev = path.curveTo(prev, x1, y1, x2, y2, x, y);
continue;
case 'z':
path.close();
break;
case ' ':
continue;
case '\n':
continue;
// end of string
case (char) -1:
go = false;
break;
default:
u.p("unrecognized character! " + ch + " " + ((int) ch));
go = false;
break;
}
}
parseFill(path, root);
parseStroke(path, root);
return path;
}