void AddElement (IList<Element> list, XElement e, Pen inheritPen, Brush inheritBrush)
{
//
// Style
//
Element r = null;
Style eStyle = new Style();
ApplyStyle (e.Attributes ().ToDictionary (k => k.Name.LocalName, v => v.Value), eStyle);
var style = ReadString (e.Attribute ("style"));
if (!string.IsNullOrWhiteSpace (style)) {
ApplyStyle (style, eStyle);
}
if (!eStyle.hasPen) eStyle.pen = inheritPen;
if (!eStyle.hasBrush) eStyle.brush = inheritBrush;
//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 = 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, eStyle.pen, eStyle.brush);
ReadTextSpans (txt, e);
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), eStyle.pen, eStyle.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), eStyle.pen, eStyle.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), eStyle.pen, eStyle.brush);
}
break;
case "path":
{
var dA = e.Attribute ("d");
if (dA != null && !string.IsNullOrWhiteSpace (dA.Value)) {
var p = new Path (eStyle.pen, eStyle.brush);
ReadPath (p, dA.Value);
r = p;
}
}
break;
case "polygon":
{
var pA = e.Attribute ("points");
if (pA != null && !string.IsNullOrWhiteSpace (pA.Value)) {
var path = new Path (eStyle.pen, eStyle.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 (eStyle.pen, eStyle.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;
AddElements (g.Children, e.Elements (), eStyle.pen, eStyle.brush);
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, eStyle.pen, eStyle.brush);
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 (eStyle.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, eStyle.pen, eStyle.brush);
}
}
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) {
eStyle.Apply(r);
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);
}
}
void ReadTextSpans (Text txt, XElement e)
{
foreach (XNode c in e.Nodes ()) {
if (c.NodeType == XmlNodeType.Text) {
txt.Spans.Add (new TextSpan (((XText)c).Value));
} else if (c.NodeType == XmlNodeType.Element) {
var ce = (XElement)c;
if (ce.Name.LocalName == "tspan") {
var tspan = new TextSpan (ce.Value);
var x = ReadOptionalNumber (ce.Attribute ("x"));
var y = ReadOptionalNumber (ce.Attribute ("y"));
if (x.HasValue && y.HasValue) {
tspan.Position = new Point (x.Value, y.Value);
}
var font = txt.Font;
var ffamily = ReadTextFontFamily (ce);
if (!string.IsNullOrWhiteSpace (ffamily)) {
font = font.WithFamily (ffamily);
}
var fweight = ReadTextFontWeight (ce);
if (!string.IsNullOrWhiteSpace (fweight)) {
font = font.WithWeight (fweight);
}
var fstyle = ReadTextFontStyle (ce);
if (!string.IsNullOrWhiteSpace (fstyle)) {
font = font.WithStyle (fstyle);
}
var fsize = ReadTextFontSize (ce);
if (fsize > 0) {
font = font.WithSize (fsize);
}
if (font != txt.Font) {
tspan.Font = font;
}
txt.Spans.Add (tspan);
}
}
}
txt.Trim ();
}
void AddElement(IList<IDrawable> list, XElement e, Pen inheritPen, Brush inheritBrush)
{
//
// Style
//
Element r = null;
Pen pen = null;
Brush brush = null;
bool hasPen, hasBrush;
ApplyStyle (e.Attributes ().ToDictionary (k => k.Name.LocalName, v => v.Value), ref pen, out hasPen, ref brush, out hasBrush);
var style = ReadString (e.Attribute ("style"));
if (!string.IsNullOrWhiteSpace (style)) {
ApplyStyle (style, ref pen, out hasPen, ref brush, out hasBrush);
}
pen = hasPen ? pen : inheritPen;
brush = hasBrush ? brush : inheritBrush;
//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 text = e.Value.Trim ();
var fontFamilyAttribute = e.Attribute("font-family");
var font = new Font ();
//if (fontFamilyAttribute != null)
// font.Family = fontFamilyAttribute.Value.Trim('\'');
var fontSizeAttribute = e.Attribute("font-size");
if (fontSizeAttribute != null)
font.Size = ReadNumber(fontSizeAttribute.Value);
r = new Text (text, new Rect (new Point (x, y), new Size (double.MaxValue, double.MaxValue)), font, TextAlignment.Left, pen, brush);
}
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"));
r = new Rectangle (new Point (x, y), new Size (width, height), 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);
ReadPath (p, dA.Value);
r = p;
}
}
break;
case "polygon":
{
var pA = e.Attribute ("points");
if (pA != null && !string.IsNullOrWhiteSpace (pA.Value)) {
var path = new Path (pen, brush);
ReadPolygon (path, pA.Value);
r = path;
}
}
break;
case "g":
{
var g = new Group ();
AddElements (g.Children, e.Elements (), pen, brush);
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<IDrawable> ();
AddElement (useList, useE, pen, brush);
r = useList.OfType<Element> ().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") );
r = new Line(new Point(x1, y1), new Point(x2, y2), pen);
}
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")));
list.Add (r);
}
}
public void EndVisit (Text e)
{
w.WriteLine ("</text>");
}
public void Visit (Text text)
{
WriteStartElement ("text", text);
w.Write (" x=\"{0}\" y=\"{1}\"",
text.Frame.X, text.Frame.Y);
if (text.Frame.Width != double.MaxValue || text.Frame.Height != double.MaxValue) {
w.Write (" width=\"{0}\" height=\"{1}\"",
text.Frame.Width, text.Frame.Height);
}
if (text.Font != null) {
w.Write (" font-family=\"{0}\" font-size=\"{1}\"",
text.Font.Name, text.Font.Size);
}
w.Write (">");
w.Write (Escape (text.String));
}
public virtual void EndVisit (Text text)
{
EndVisitElement (text);
}