void AddElement(IList <Element> list, XElement e, Pen inheritPen, Brush inheritBrush, Font inheritFont)
{
//
// Style
//
Element r = null;
GetPenAndBrush(e, inheritPen, inheritBrush, out var pen, out var brush);
//var id = ReadString (e.Attribute ("id"));
//
// Elements
//
switch (e.Name.LocalName)
{
case "text":
{
var x = ReadNumber(e.Attribute("x"));
var y = ReadNumber(e.Attribute("y"));
var font = inheritFont?.Clone() ?? new Font();
var fontFamily = ReadTextFontFamily(e);
if (!string.IsNullOrEmpty(fontFamily))
{
font.Family = fontFamily;
}
var fontSize = ReadTextFontSize(e);
if (fontSize >= 0)
{
font.Size = fontSize;
}
TextAlignment textAlignment = ReadTextAlignment(e);
var txt = new Text(new Rect(new Point(x, y), new Size(double.MaxValue, double.MaxValue)), font, textAlignment, pen, brush);
ReadTextSpans(txt, e, pen, brush);
r = txt;
}
break;
case "rect":
{
var x = ReadNumber(e.Attribute("x"));
var y = ReadNumber(e.Attribute("y"));
var width = ReadNumber(e.Attribute("width"));
var height = ReadNumber(e.Attribute("height"));
var rx = ReadNumber(e.Attribute("rx"));
var ry = ReadNumber(e.Attribute("ry"));
if (ry == 0)
{
ry = rx;
}
r = new Rectangle(new Rect(new Point(x, y), new Size(width, height)), new Size(rx, ry), pen, brush);
}
break;
case "ellipse":
{
var cx = ReadNumber(e.Attribute("cx"));
var cy = ReadNumber(e.Attribute("cy"));
var rx = ReadNumber(e.Attribute("rx"));
var ry = ReadNumber(e.Attribute("ry"));
r = new Ellipse(new Point(cx - rx, cy - ry), new Size(2 * rx, 2 * ry), pen, brush);
}
break;
case "circle":
{
var cx = ReadNumber(e.Attribute("cx"));
var cy = ReadNumber(e.Attribute("cy"));
var rr = ReadNumber(e.Attribute("r"));
r = new Ellipse(new Point(cx - rr, cy - rr), new Size(2 * rr, 2 * rr), pen, brush);
}
break;
case "path":
{
var dA = e.Attribute("d");
if (dA != null && !string.IsNullOrWhiteSpace(dA.Value))
{
var p = new Path(pen, brush);
try {
ReadPath(p, dA.Value);
}
catch (Exception ex) {
Errors.Add(ex);
}
r = p;
}
}
break;
case "polygon":
{
var pA = e.Attribute("points");
if (pA != null && !string.IsNullOrWhiteSpace(pA.Value))
{
var path = new Path(pen, brush);
ReadPoints(path, pA.Value, true);
r = path;
}
}
break;
case "polyline":
{
var pA = e.Attribute("points");
if (pA != null && !string.IsNullOrWhiteSpace(pA.Value))
{
var path = new Path(pen, brush);
ReadPoints(path, pA.Value, false);
r = path;
}
}
break;
case "g":
{
var g = new Group();
var groupId = e.Attribute("id");
if (groupId != null && !string.IsNullOrEmpty(groupId.Value))
{
g.Id = groupId.Value;
}
var groupOpacity = e.Attribute("opacity");
if (groupOpacity != null && !string.IsNullOrEmpty(groupOpacity.Value))
{
g.Opacity = ReadNumber(groupOpacity);
}
AddElements(g.Children, e.Elements(), pen, brush, inheritFont);
r = g;
}
break;
case "use":
{
var href = ReadString(e.Attributes().FirstOrDefault(x => x.Name.LocalName == "href"));
if (!string.IsNullOrWhiteSpace(href))
{
XElement useE;
if (defs.TryGetValue(href.Trim().Replace("#", ""), out useE))
{
var useList = new List <Element> ();
AddElement(useList, useE, pen, brush, inheritFont);
r = useList.FirstOrDefault();
}
}
}
break;
case "title":
Graphic.Title = ReadString(e);
break;
case "desc":
case "description":
Graphic.Description = ReadString(e);
break;
case "defs":
// Already read in earlier pass
break;
case "namedview":
case "metadata":
case "image":
// Ignore
break;
case "line":
{
var x1 = ReadNumber(e.Attribute("x1"));
var x2 = ReadNumber(e.Attribute("x2"));
var y1 = ReadNumber(e.Attribute("y1"));
var y2 = ReadNumber(e.Attribute("y2"));
var p = new Path(pen, null);
p.MoveTo(x1, y1);
p.LineTo(x2, y2);
r = p;
}
break;
case "foreignObject":
{
var x = ReadNumber(e.Attribute("x"));
var y = ReadNumber(e.Attribute("y"));
var width = ReadNumber(e.Attribute("width"));
var height = ReadNumber(e.Attribute("height"));
r = new ForeignObject(new Point(x, y), new Size(width, height));
}
break;
case "pgf":
{
var id = e.Attribute("id");
System.Diagnostics.Debug.WriteLine("Ignoring pgf element" + (id != null ? ": '" + id.Value + "'" : ""));
}
break;
case "switch":
{
// Evaluate requiredFeatures, requiredExtensions and systemLanguage
foreach (var ee in e.Elements())
{
var requiredFeatures = ee.Attribute("requiredFeatures");
var requiredExtensions = ee.Attribute("requiredExtensions");
var systemLanguage = ee.Attribute("systemLanguage");
// currently no support for any of these restrictions
if (requiredFeatures == null && requiredExtensions == null && systemLanguage == null)
{
AddElement(list, ee, pen, brush, inheritFont);
}
}
}
break;
// color definition that can be referred to by other elements
case "linearGradient":
break;
default:
throw new NotSupportedException("SVG element \"" + e.Name.LocalName + "\" is not supported");
}
if (r != null)
{
r.Transform = ReadTransform(ReadString(e.Attribute("transform")));
var ida = e.Attribute("id");
if (ida != null && !string.IsNullOrEmpty(ida.Value))
{
r.Id = ida.Value.Trim();
}
list.Add(r);
}
}
