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Adding support for TextSymbolizer writing in the SLD format. Thanks to Bart for the original patch. This provides basic expression handling for text labels. Read support later. r=ahocevar (closes #1542)

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git-svn-id: http://svn.openlayers.org/trunk/openlayers@7333 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
This commit is contained in:
Tim Schaub
2008-06-09 17:18:35 +00:00
parent bed7f208ab
commit de6ce111c9
3 changed files with 102 additions and 2 deletions
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66
lib/OpenLayers/Format/SLD/v1.js
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@@ -425,7 +425,9 @@ OpenLayers.Format.SLD.v1 = OpenLayers.Class(OpenLayers.Format.XML, {
"stroke-width": "strokeWidth",
"stroke-linecap": "strokeLinecap",
"fill": "fillColor",
"fill-opacity": "fillOpacity"
"fill-opacity": "fillOpacity",
"font-family": "fontFamily",
"font-size": "fontSize"
},
/**
@@ -732,6 +734,68 @@ OpenLayers.Format.SLD.v1 = OpenLayers.Class(OpenLayers.Format.XML, {
value: obj.symbolizer[obj.key]
});
},
"TextSymbolizer": function(symbolizer) {
var node = this.createElementNSPlus("TextSymbolizer");
// add in optional Label
if(symbolizer.label != null) {
this.writeNode(node, "Label", symbolizer.label);
}
// add in optional Font
if(symbolizer.fontFamily != null ||
symbolizer.fontSize != null) {
this.writeNode(node, "Font", symbolizer);
}
// add in optional Fill
if(symbolizer.fillColor != null ||
symbolizer.fillOpacity != null) {
this.writeNode(node, "Fill", symbolizer);
}
return node;
},
"Font": function(symbolizer) {
var node = this.createElementNSPlus("Font");
// add in CssParameters
if(symbolizer.fontFamily) {
this.writeNode(
node, "CssParameter",
{symbolizer: symbolizer, key: "fontFamily"}
);
}
if(symbolizer.fontSize) {
this.writeNode(
node, "CssParameter",
{symbolizer: symbolizer, key: "fontSize"}
);
}
return node;
},
"Label": function(label) {
// only the simplest of ogc:expression handled
// {label: "some text and a ${propertyName}"}
var node = this.createElementNSPlus("Label");
var tokens = label.split("${");
node.appendChild(this.createTextNode(tokens[0]));
var item, last;
for(var i=1; i<tokens.length; i++) {
item = tokens[i];
last = item.indexOf("}");
if(last > 0) {
this.writeNode(
node, "ogc:PropertyName",
{property: item.substring(0, last)}
);
node.appendChild(
this.createTextNode(item.substring(++last))
);
} else {
// no ending }, so this is a literal ${
node.appendChild(
this.createTextNode("${" + item)
);
}
}
return node;
},
"PolygonSymbolizer": function(symbolizer) {
var node = this.createElementNSPlus("PolygonSymbolizer");
this.writeNode(node, "Fill", symbolizer);