/**
* Construct a new StyleAttrCSSResolver with the given {@link CssFiles} and {@link CssUtils}.
*
* @param rules the {@link CssInheritanceRules} to use.
* @param cssFiles a {@link CssFiles} implementation.
* @param utils the CssUtils to use.
* @param fileRetrieve the {@link FileRetrieve} implementation
*/
public StyleAttrSvgCSSResolver(ICssInheritanceRules rules, ICssFiles cssFiles, CssUtils utils, IFileRetrieve fileRetrieve)
{
this.utils = utils;
this.cssFiles = cssFiles;
this.inherit = rules;
this.retrieve = fileRetrieve;
this.attributes = SVGAttributes.GetSVGAttributesList();
}
public void CreateSVGDependencyGraph(DependencyGraph graph)
{
SVG svg = new SVG(this.Document, SVGNameSpace, "1.1");
this.BodyElement.AppendChild((svg as ISVGElement).Element);
SVGDefinitions definitions = new SVGDefinitions(svg);
System.Collections.Generic.Dictionary <DependencyNode, SVGGroup> nodeToSVGGroup = new System.Collections.Generic.Dictionary <DependencyNode, SVGGroup>();
int rankCount = graph.RankCount;
int numVerticalSlots = 2 * rankCount + 1;
float verticalStride = 100 / numVerticalSlots;
int y = (int)verticalStride;;
for (int i = rankCount - 1; i >= 0; --i)
{
DependencyNodeCollection rank = graph[i];
int nodeCount = rank.Count;
int numHorizontalSlots = 2 * nodeCount + 1;
float horizontalStride = 100 / numHorizontalSlots;
int x = (int)horizontalStride;
System.Text.StringBuilder rankIdName = new System.Text.StringBuilder();
rankIdName.AppendFormat("Rank{0}", rank.Rank);
SVGGroup rankGroup = new SVGGroup(svg, rankIdName.ToString());
SVGAttributes.Fill(rankGroup, "red");
SVGText rankText = new SVGText(rankGroup, rankIdName.ToString(), 0, y, 100, (int)verticalStride, "%");
SVGAttributes.Fill(rankText, "black");
foreach (DependencyNode node in rank)
{
SVGGroup nodeGroup = new SVGGroup(rankGroup, node.UniqueModuleName);
SVGRect nodeRect = new SVGRect(nodeGroup, x, y, (int)horizontalStride, (int)verticalStride, "%");
SVGText nodeText = new SVGText(nodeGroup, node.UniqueModuleName, x, y + (int)verticalStride / 2, (int)horizontalStride, (int)verticalStride, "%");
SVGAttributes.Fill(nodeText, "black");
nodeToSVGGroup.Add(node, nodeGroup);
x += (int)(2 * horizontalStride);
}
y += (int)(verticalStride * 2);
}
SVGArrow arrow = new SVGArrow(svg, 0, 0, 100, 100, "");
SVGAttributes.Stroke(arrow, "black");
SVGAttributes.StrokeWidth(arrow, 5);
#if false
System.Xml.XmlElement circle = this.Document.CreateElement("circle");
System.Xml.XmlAttribute cx = this.Document.CreateAttribute("cx");
cx.Value = "100";
System.Xml.XmlAttribute cy = this.Document.CreateAttribute("cy");
cy.Value = "50";
System.Xml.XmlAttribute r = this.Document.CreateAttribute("r");
r.Value = "40";
circle.Attributes.Append(cx);
circle.Attributes.Append(cy);
circle.Attributes.Append(r);
svgElement.AppendChild(circle);
#endif
}
/**
* Also taking into account the CSS properties of any parent tag in the given tag.
*
* @see com.itextpdf.tool.xml.pipeline.css.CSSResolver#resolveStyles(com.itextpdf.tool.xml.Tag)
*/
//THE DIFFERENCE BETWEEN HTML AND SVG: SVG has for a lot of style properties the possibility to use still attributes that define the same
public void ResolveStyles(Tag t)
{
// get css for this tag from resolver
IDictionary <String, String> tagCss = new Dictionary <String, String>();
if (null != cssFiles && cssFiles.HasFiles())
{
tagCss = cssFiles.GetCSS(t);
}
if (null != t.Attributes && t.Attributes.Count > 0)
{
//first get the attributes that related to style but aren't in a style attribute, these can be overwritten by the same element that is defined in a style
//TODO check default values & incorrect values:
//e.g. stroke="red" style="stroke:yellow" -> yellow but stroke="red" style="stroke:an non-existing color" -> red
//if both are wrong or missing -> take from parent
foreach (KeyValuePair <String, String> pair in t.Attributes)
{
bool valid = SVGAttributes.IsValidAttribute(pair.Key, pair.Value, attributes);
if (valid)
{
tagCss[pair.Key] = pair.Value;
}
}
// get css from "style" attr
String styleAtt;
if (t.Attributes.TryGetValue(HTML.Attribute.STYLE, out styleAtt) && !string.IsNullOrEmpty(styleAtt))
{
String[] styles = styleAtt.Split(new Char[] { ';' });
foreach (String s in styles)
{
String[] part = s.Split(new Char[] { ':' }, 2);
if (part.Length == 2)
{
String key = part[0].Trim();
String value = utils.StripDoubleSpacesAndTrim(part[1]);
//ONLY add when it is a valid style attribute in SVG
if (SVGAttributes.IsValidAttribute(key, value, attributes))
{
tagCss[key] = value;
}
else
{
//System.out.Println(key + " " + value);
}
//splitRules(tagCss, key, value);
}
}
}
}
// inherit css from parent tags, as defined in provided CssInheritanceRules or if property = inherit
IDictionary <String, String> css = t.CSS;
if (MustInherit(t.Name) && null != t.Parent && null != t.Parent.CSS)
{
if (null != this.inherit)
{
foreach (KeyValuePair <String, String> entry in t.Parent.CSS)
{
String key = entry.Key;
if ((tagCss.ContainsKey(key) && CSS.Value.INHERIT.Equals(tagCss.ContainsKey(key) ? tagCss[key] : null)) || CanInherite(t, key))
{
//splitRules(css, key, entry.GetValue());
if (SVGAttributes.IsValidAttribute(key, entry.Value, attributes))
{
css[key] = entry.Value;
}
}
}
}
else
{
CssUtils.MapPutAll(css, t.Parent.CSS);
}
}
// overwrite properties (if value != inherit)
foreach (KeyValuePair <String, String> e in tagCss)
{
if (!Util.EqualsIgnoreCase(CSS.Value.INHERIT, e.Value))
{
css[e.Key] = e.Value;
}
}
}