/**
* This transforms all external graphics references that are relative to absolute. This is a
* workaround to be able to visualize png and svg in relative mode, which doesn't work right now
* in geotools. See: http://jira.codehaus.org/browse/GEOT-3235
*
* <p>This will not be necessary any more as soon as the geotools bug is fixed.
*
* @param relatedFile the related shapefile.
* @param style the style to check.
*/
private void makeGraphicsAbsolute(File relatedFile, Style style) {
File parentFolder = relatedFile.getParentFile();
Rule[] rules = SLDs.rules(style);
for (Rule rule : rules) {
Symbolizer[] onlineResource = rule.getSymbolizers();
for (Symbolizer symbolizer : onlineResource) {
if (symbolizer instanceof PointSymbolizer) {
PointSymbolizer pointSymbolizer = (PointSymbolizer) symbolizer;
Graphic graphic = SLDs.graphic(pointSymbolizer);
List<GraphicalSymbol> graphicalSymbols = graphic.graphicalSymbols();
for (GraphicalSymbol graphicalSymbol : graphicalSymbols) {
if (graphicalSymbol instanceof ExternalGraphic) {
ExternalGraphic externalGraphic = (ExternalGraphic) graphicalSymbol;
try {
URL location = externalGraphic.getLocation();
File urlToFile = URLUtils.urlToFile(location);
if (urlToFile != null && !urlToFile.exists()) {
File newFile = new File(parentFolder, urlToFile.getPath());
if (newFile.exists()) {
externalGraphic.setLocation(newFile.toURI().toURL());
}
}
} catch (MalformedURLException e) {
e.printStackTrace();
}
}
}
}
}
}
}
@SuppressWarnings("nls")
private void setExternalGraphicPath(String externalGraphicPath, ExternalGraphic extGraphic)
throws MalformedURLException {
URL url = null;
File f = new File(externalGraphicPath);
String format = Utilities.getFormat(externalGraphicPath);
if (!f.exists()) {
if (externalGraphicPath.startsWith("http://") || externalGraphicPath.startsWith("file:")) {
url = new URL(externalGraphicPath);
}
}
if (url == null) {
url = f.toURI().toURL();
if (externalGraphicPath.equals("")) {
url = new URL("file:");
}
}
extGraphic.setLocation(url);
extGraphic.setFormat(format);
}
private String getExternalGraphicPath(ExternalGraphic extGraphic) throws MalformedURLException {
if (extGraphic == null) {
return "";
}
URL location = extGraphic.getLocation();
String urlString = location.toExternalForm();
if (urlString.startsWith("http://")) {
return urlString;
} else {
File urlToFile = URLUtils.urlToFile(location);
if (urlString.equals("file:")) {
return "";
} else {
return urlToFile.getAbsolutePath();
}
}
}