private Rule createRule(Color outlineColor, Color fillColor, boolean bSelected) {
Symbolizer symbolizer = null;
Fill fill = null;
Stroke stroke = sf.createStroke(ff.literal(outlineColor), ff.literal(LINE_WIDTH));
switch (geometryType) {
case POLYGON:
fill = sf.createFill(ff.literal(fillColor), ff.literal(OPACITY));
symbolizer = sf.createPolygonSymbolizer(stroke, fill, geometryAttributeName);
break;
case LINE:
symbolizer = sf.createLineSymbolizer(stroke, geometryAttributeName);
break;
case POINT:
fill = sf.createFill(ff.literal(fillColor), ff.literal(OPACITY));
Mark mark = sf.getTriangleMark();
mark.setFill(fill);
mark.setStroke(stroke);
Graphic graphic = sf.createDefaultGraphic();
graphic.graphicalSymbols().clear();
graphic.graphicalSymbols().add(mark);
graphic.setSize(ff.literal(bSelected ? SELECTED_POINT_SIZE : POINT_SIZE));
symbolizer = sf.createPointSymbolizer(graphic, geometryAttributeName);
}
Rule rule = sf.createRule();
rule.symbolizers().add(symbolizer);
return rule;
}
/**
* 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();
}
}
}
}
}
}
}
private static List[] getLayerRules(SimpleFeatureType ftype, Style style) {
List[] result = new List[] {new ArrayList(), new ArrayList()};
final String typeName = ftype.getTypeName();
FeatureTypeStyle[] featureStyles = filterFeatureTypeStyles(style, ftype);
final int length = featureStyles.length;
for (int i = 0; i < length; i++) {
// getting feature styles
FeatureTypeStyle fts = featureStyles[i];
// get applicable rules at the current scale
Rule[] ftsRules = fts.getRules();
for (int j = 0; j < ftsRules.length; j++) {
// getting rule
Rule r = ftsRules[j];
if (r.hasElseFilter()) {
result[ELSE_RULES].add(r);
} else {
result[RULES].add(r);
}
}
}
return result;
}
Symbolizer[] getSymbolizers(Style style) {
List<Symbolizer> symbs = new ArrayList<Symbolizer>();
FeatureTypeStyle[] styles = style.getFeatureTypeStyles();
for (int i = 0; i < styles.length; i++) {
FeatureTypeStyle fstyle = styles[i];
Rule[] rules = fstyle.getRules();
for (int j = 0; j < rules.length; j++) {
Rule rule = rules[j];
symbs.addAll(Arrays.asList(rule.getSymbolizers()));
}
}
return symbs.toArray(new Symbolizer[symbs.size()]);
}
/**
* Create a Style where features with given IDs are painted yellow, while others are painted with
* the default colors.
*/
private Style createSelectedStyle(Set<FeatureId> IDs) {
Rule selectedRule = createRule(SELECTED_COLOUR, SELECTED_COLOUR);
selectedRule.setFilter(ff.id(IDs));
Rule otherRule = createRule(LINE_COLOUR, FILL_COLOUR);
otherRule.setElseFilter(true);
FeatureTypeStyle fts = sf.createFeatureTypeStyle();
fts.rules().add(selectedRule);
fts.rules().add(otherRule);
Style style = sf.createStyle();
style.featureTypeStyles().add(fts);
return style;
}
static Style makeStyle(StyleFactory factory, List<List<MiniRule>> ftStyles) {
Style style = factory.createStyle();
for (List<MiniRule> rules : ftStyles) {
FeatureTypeStyle ftStyle = factory.createFeatureTypeStyle();
for (MiniRule miniRule : rules) {
if (!miniRule.symbolizers.isEmpty()) {
Rule realRule = factory.createRule();
for (Symbolizer sym : miniRule.symbolizers) {
realRule.symbolizers().add(sym);
}
ftStyle.rules().add(realRule);
}
}
style.featureTypeStyles().add(ftStyle);
}
return style;
}
private Style createDefaultStyle(int idx, Set<FeatureId> IDs) {
Color fillColor = featureFills[idx];
Rule selectedRule = createRule(SELECTED_COLOUR, SELECTED_COLOUR, true);
selectedRule.setFilter(ff.id(IDs));
Rule rule = createRule(fillColor, fillColor, false);
rule.setElseFilter(true);
FeatureTypeStyle fts = sf.createFeatureTypeStyle();
fts.rules().add(selectedRule);
fts.rules().add(rule);
Style style = sf.createStyle();
style.featureTypeStyles().add(fts);
return style;
}
/**
* Creates a FeatureTypeStyle (core part of a SLD file). It is composed by Rules (tag <sld:Rule>)
* and each Rule can contain one Filter (filters values) and one Symbolizer (what's displayed). It
* Needs 2 factories: <br>
* - I_FilterFactory: gives Filters (tag <ogc:Filter>) <br>
* - I_SymbolizerFactory: gives Symbolizers (tag: <sld:PolygonSymbolizer> or
* <sld:PointSymbolizer>) <br>
*
* @param filterFact Filters Factory
* @param symbolizerFact Symbolizers Factory
* @return FeatureTypeStyle (List of Rules)
*/
private FeatureTypeStyle createFeatureTypeStyle(
I_FilterFactory filterFact, I_SymbolizerFactory symbolizerFact) {
StyleFactory styleFactory = CommonFactoryFinder.getStyleFactory(null);
FeatureTypeStyle fts = styleFactory.createFeatureTypeStyle();
Iterator<Symbolizer> symbolizers = symbolizerFact.iterator();
Iterator<Filter> filters = filterFact.iterator();
// use each factory iterator to get their items (Filter and Symbolizer)
// there should be as many symbolizers as many filters
while (symbolizers.hasNext() && filters.hasNext()) {
// create a Rule. A Rule is composed by one Filter and one Symbolizer
Rule rule = styleFactory.createRule();
Filter filter = filters.next();
rule.setSymbolizers(new Symbolizer[] {symbolizers.next()});
rule.setFilter(filter.getGISFilter());
rule.setName(filter.getName());
rule.setTitle(filter.getName());
fts.addRule(rule);
}
if (filters.hasNext()) {
throw new RuntimeException("BUG: more filters than symbolizers");
}
/*
* This piece of code can be added to add a stroke around the polygons.
* This rule does not include a filter, therefore, it is globally applied.
*/
/*
StyleBuilder styleBuilder = new StyleBuilder();
Rule rule = styleFactory.createRule();
Stroke stroke = styleFactory.createStroke(
styleBuilder.literalExpression(Color.BLACK), // color
styleBuilder.literalExpression(1), // width
styleBuilder.literalExpression(1.0)); // opacity
LineSymbolizer ls = styleFactory.createLineSymbolizer(stroke, "");
rule.setSymbolizers(new Symbolizer[] {ls});
fts.addRule(rule);
*/
return fts;
}
static List<List<MiniRule>> minify(Style style) {
List<List<MiniRule>> ftStyles = new ArrayList<List<MiniRule>>();
for (FeatureTypeStyle ftStyle : style.featureTypeStyles()) {
List<MiniRule> rules = new ArrayList<MiniRule>();
for (Rule rule : ftStyle.rules()) {
List<PointSymbolizer> pointSymbolizers = new ArrayList<PointSymbolizer>();
for (Symbolizer symbolizer : rule.symbolizers()) {
if (symbolizer instanceof PointSymbolizer) {
pointSymbolizers.add((PointSymbolizer) symbolizer);
}
}
if (!pointSymbolizers.isEmpty())
rules.add(new MiniRule(rule.getFilter(), rule.isElseFilter(), pointSymbolizers));
}
if (!rules.isEmpty()) {
ftStyles.add(rules);
}
}
return ftStyles;
}
private void twoFeatureTypeStyles() {
// twoFeatureTypeStyles start
StyleFactory styleFactory = CommonFactoryFinder.getStyleFactory();
FilterFactory2 filterFactory = CommonFactoryFinder.getFilterFactory2();
Style style = styleFactory.getDefaultStyle();
// Feature type style 1
FeatureTypeStyle fts = styleFactory.createFeatureTypeStyle();
fts.featureTypeNames().add(new NameImpl("feature-type-1"));
style.featureTypeStyles().add(fts);
// Feature type style 2
FeatureTypeStyle fts2 = styleFactory.createFeatureTypeStyle();
fts2.featureTypeNames().add(new NameImpl("feature-type-2"));
// creating the rule 1
Rule rule1 = styleFactory.createRule();
rule1.setName("rule1");
Filter aFilter = filterFactory.id(Collections.singleton(filterFactory.featureId("FID")));
rule1.setFilter(aFilter);
fts2.rules().add(rule1);
// creating the rule 2
Rule rule2 = styleFactory.createRule();
rule2.setIsElseFilter(true);
rule2.setName("rule2");
fts2.rules().add(rule2);
style.featureTypeStyles().add(fts2);
// twoFeatureTypeStyles end
}
/**
* Filters the rules of <code>featureTypeStyle</code> returnting only those that apply to <code>
* feature</code>.
*
* <p>This method returns rules for which:
*
* <ol>
* <li><code>rule.getFilter()</code> matches <code>feature</code>, or:
* <li>the rule defines an "ElseFilter", and the feature matches no other rules.
* </ol>
*
* This method returns an empty array in the case of which no rules match.
*
* @param featureTypeStyle The feature type style containing the rules.
* @param feature The feature being filtered against.
*/
public static Rule[] filterRules(
FeatureTypeStyle featureTypeStyle, SimpleFeature feature, double scaleDenominator) {
Rule[] rules = featureTypeStyle.getRules();
if ((rules == null) || (rules.length == 0)) {
return new Rule[0];
}
ArrayList filtered = new ArrayList(rules.length);
// process the rules, keep track of the need to apply an else filters
boolean match = false;
boolean hasElseFilter = false;
for (int i = 0; i < rules.length; i++) {
Rule rule = rules[i];
LOGGER.finer(new StringBuffer("Applying rule: ").append(rule.toString()).toString());
// does this rule have an else filter
if (rule.hasElseFilter()) {
hasElseFilter = true;
continue;
}
// is this rule within scale?
if (!isWithInScale(rule, scaleDenominator)) {
continue;
}
// does this rule have a filter which applies to the feature
Filter filter = rule.getFilter();
if ((filter == null) || filter.evaluate(feature)) {
match = true;
filtered.add(rule);
}
}
// if no rules mached the feautre, re-run through the rules applying
// any else filters
if (!match && hasElseFilter) {
// loop through again and apply all the else rules
for (int i = 0; i < rules.length; i++) {
Rule rule = rules[i];
// is this rule within scale?
if (!isWithInScale(rule, scaleDenominator)) {
continue;
}
if (rule.hasElseFilter()) {
filtered.add(rule);
}
}
}
return (Rule[]) filtered.toArray(new Rule[filtered.size()]);
}
/**
* Summarizes, when possible, the rule filters into one.
*
* @param rules
* @param originalFiter
* @param scaleDenominator The actual scale denominator, or a value <= 0 if no scale denominator
* checks have to be performed
* @return
*/
private static Filter summarizeRuleFilters(List[] rules, double scaleDenominator) {
if (rules[RULES].size() == 0 && rules[ELSE_RULES].size() > 0) return Filter.EXCLUDE;
List filters = new ArrayList();
for (Iterator it = rules[RULES].iterator(); it.hasNext(); ) {
Rule rule = (Rule) it.next();
if (scaleDenominator <= 0 || isWithInScale(rule, scaleDenominator)) {
// if there is a single rule asking for all filters, we have to
// return everything that the original filter returned already
if (rule.getFilter() == null || Filter.INCLUDE.equals(rule.getFilter()))
return Filter.INCLUDE;
else filters.add(rule.getFilter());
}
}
if (filters.size() > 0) {
FilterFactory ff = CommonFactoryFinder.getFilterFactory(null);
return ff.or(filters);
} else {
return Filter.EXCLUDE;
}
}
private void styleBuilderExample() throws Exception {
// styleBuilderExample start
//
// We are using the GeoTools StyleBuilder that is helpful for quickly making things
StyleBuilder builder = new StyleBuilder();
FilterFactory2 ff = builder.getFilterFactory();
// RULE 1
// first rule to draw cities
// define a point symbolizer representing a city
Graphic city = builder.createGraphic();
city.setSize(ff.literal(10));
city.graphicalSymbols().add(builder.createExternalGraphic("file:city.svg", "svg")); // svg
// preferred
city.graphicalSymbols().add(builder.createExternalGraphic("file:city.png", "png")); // png next
city.graphicalSymbols()
.add(builder.createMark(StyleBuilder.MARK_CIRCLE, Color.BLUE, Color.BLACK, 1));
PointSymbolizer pointSymbolizer = builder.createPointSymbolizer(city, "the_geom");
Rule rule1 = builder.createRule(pointSymbolizer);
rule1.setName("rule1");
rule1.getDescription().setTitle("City");
rule1.getDescription().setAbstract("Rule for drawing cities");
rule1.setFilter(ff.less(ff.property("POPULATION"), ff.literal(50000)));
//
// RULE 2 Default
Graphic dotGraphic =
builder.createGraphic(null, builder.createMark(StyleBuilder.MARK_CIRCLE), null);
PointSymbolizer dotSymbolize = builder.createPointSymbolizer(dotGraphic);
Rule rule2 = builder.createRule(dotSymbolize);
rule2.setIsElseFilter(true);
//
// define feature type styles used to actually define how features are rendered
Rule rules[] = new Rule[] {rule1, rule2};
FeatureTypeStyle featureTypeStyle = builder.createFeatureTypeStyle("Feature", rules);
//
// create a "user defined" style
Style style = builder.createStyle();
style.setName("style");
style.getDescription().setTitle("User Style");
style.getDescription().setAbstract("Definition of Style");
style.featureTypeStyles().add(featureTypeStyle);
// styleBuilderExample end
}
/**
* Returns a sample feature for the given rule, with the following criteria: - if a sample is
* given in input is returned in output - if a sample is not given in input, scan the rule
* symbolizers to find the one with the max dimensionality, and return a sample for that
* dimensionality.
*
* @param featureType featureType used to create a sample, if none is given as input
* @param sample feature sample to be returned as is in output, if defined
* @param rule rule containing symbolizers to scan for max dimensionality
*/
private Feature getSampleFeatureForRule(
FeatureType featureType, Feature sample, final Rule rule) {
Symbolizer[] symbolizers = rule.getSymbolizers();
// if we don't have a sample as input, we need to create a sampleFeature
// looking at the requested symbolizers (we chose the one with the max
// dimensionality and create a congruent sample)
if (sample == null) {
int dimensionality = 1;
for (int sIdx = 0; sIdx < symbolizers.length; sIdx++) {
final Symbolizer symbolizer = symbolizers[sIdx];
if (LineSymbolizer.class.isAssignableFrom(symbolizer.getClass())) {
dimensionality = 2;
}
if (PolygonSymbolizer.class.isAssignableFrom(symbolizer.getClass())) {
dimensionality = 3;
}
}
return createSampleFeature(featureType, dimensionality);
} else {
return sample;
}
}
/**
* Receives a list of <code>BufferedImages</code> and produces a new one which holds all the
* images in <code>imageStack</code> one above the other, handling labels.
*
* @param imageStack the list of BufferedImages, one for each applicable Rule
* @param rules The applicable rules, one for each image in the stack (if not null it's used to
* compute labels)
* @param request The request.
* @param forceLabelsOn true for force labels on also with a single image.
* @param forceLabelsOff true for force labels off also with more than one rule.
* @return the stack image with all the images on the argument list.
* @throws IllegalArgumentException if the list is empty
*/
private BufferedImage mergeLegends(
List<RenderedImage> imageStack,
Rule[] rules,
GetLegendGraphicRequest req,
boolean forceLabelsOn,
boolean forceLabelsOff) {
Font labelFont = LegendUtils.getLabelFont(req);
boolean useAA = LegendUtils.isFontAntiAliasing(req);
if (imageStack.size() == 0) {
return null;
}
final BufferedImage finalLegend;
if (imageStack.size() == 1 && (!forceLabelsOn || rules == null)) {
finalLegend = (BufferedImage) imageStack.get(0);
} else {
final int imgCount = imageStack.size();
final String[] labels = new String[imgCount];
BufferedImage img = ((BufferedImage) imageStack.get(0));
int totalHeight = 0;
int totalWidth = 0;
int[] rowHeights = new int[imgCount];
BufferedImage labelsGraphics[] = new BufferedImage[imgCount];
for (int i = 0; i < imgCount; i++) {
img = (BufferedImage) imageStack.get(i);
if (forceLabelsOff || rules == null) {
totalWidth = (int) Math.ceil(Math.max(img.getWidth(), totalWidth));
rowHeights[i] = img.getHeight();
totalHeight += img.getHeight();
} else {
Rule rule = rules[i];
// What's the label on this rule? We prefer to use
// the 'title' if it's available, but fall-back to 'name'
final Description description = rule.getDescription();
Locale locale = req.getLocale();
if (description != null && description.getTitle() != null) {
final InternationalString title = description.getTitle();
if (locale != null) {
labels[i] = title.toString(locale);
} else {
labels[i] = title.toString();
}
} else if (rule.getName() != null) {
labels[i] = rule.getName();
} else {
labels[i] = "";
}
if (labels[i] != null && labels[i].length() > 0) {
final BufferedImage renderedLabel = getRenderedLabel(img, labels[i], req);
labelsGraphics[i] = renderedLabel;
final Rectangle2D bounds =
new Rectangle2D.Double(0, 0, renderedLabel.getWidth(), renderedLabel.getHeight());
totalWidth = (int) Math.ceil(Math.max(img.getWidth() + bounds.getWidth(), totalWidth));
rowHeights[i] = (int) Math.ceil(Math.max(img.getHeight(), bounds.getHeight()));
} else {
totalWidth = (int) Math.ceil(Math.max(img.getWidth(), totalWidth));
rowHeights[i] = (int) Math.ceil(img.getHeight());
labelsGraphics[i] = null;
}
totalHeight += rowHeights[i];
}
}
// buffer the width a bit
totalWidth += 2;
final boolean transparent = req.isTransparent();
final Color backgroundColor = LegendUtils.getBackgroundColor(req);
final Map<RenderingHints.Key, Object> hintsMap = new HashMap<RenderingHints.Key, Object>();
// create the final image
finalLegend =
ImageUtils.createImage(totalWidth, totalHeight, (IndexColorModel) null, transparent);
Graphics2D finalGraphics =
ImageUtils.prepareTransparency(transparent, backgroundColor, finalLegend, hintsMap);
int topOfRow = 0;
for (int i = 0; i < imgCount; i++) {
img = (BufferedImage) imageStack.get(i);
// draw the image
int y = topOfRow;
if (img.getHeight() < rowHeights[i]) {
// move the image to the center of the row
y += (int) ((rowHeights[i] - img.getHeight()) / 2d);
}
finalGraphics.drawImage(img, 0, y, null);
if (forceLabelsOff || rules == null) {
topOfRow += rowHeights[i];
continue;
}
finalGraphics.setFont(labelFont);
if (useAA) {
finalGraphics.setRenderingHint(
RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
} else {
finalGraphics.setRenderingHint(
RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_OFF);
}
// draw the label
if (labels[i] != null && labels[i].length() > 0) {
// first create the actual overall label image.
final BufferedImage renderedLabel = labelsGraphics[i];
y = topOfRow;
if (renderedLabel.getHeight() < rowHeights[i]) {
y += (int) ((rowHeights[i] - renderedLabel.getHeight()) / 2d);
}
finalGraphics.drawImage(renderedLabel, img.getWidth(), y, null);
// cleanup
renderedLabel.flush();
labelsGraphics[i] = null;
}
topOfRow += rowHeights[i];
}
finalGraphics.dispose();
}
return finalLegend;
}
Symbolizer[] getSymbolizers(Rule rule) {
List<Symbolizer> symbs = new ArrayList<Symbolizer>();
symbs.addAll(Arrays.asList(rule.getSymbolizers()));
return symbs.toArray(new Symbolizer[symbs.size()]);
}
private void styleFactoryExample() throws Exception {
// styleFactoryExample start
//
// We are using the GeoTools styleFactory that allows access to get/set methods
org.geotools.styling.StyleFactory sf = CommonFactoryFinder.getStyleFactory();
FilterFactory2 ff = CommonFactoryFinder.getFilterFactory2();
StyledLayerDescriptor sld = sf.createStyledLayerDescriptor();
sld.setName("sld");
sld.setTitle("Example");
sld.setAbstract("Example Style Layer Descriptor");
UserLayer layer = sf.createUserLayer();
layer.setName("layer");
//
// define constraint limited what features the sld applies to
FeatureTypeConstraint constraint =
sf.createFeatureTypeConstraint("Feature", Filter.INCLUDE, null);
layer.layerFeatureConstraints().add(constraint);
//
// create a "user defined" style
Style style = sf.createStyle();
style.setName("style");
style.getDescription().setTitle("User Style");
style.getDescription().setAbstract("Definition of Style");
//
// define feature type styles used to actually define how features are rendered
FeatureTypeStyle featureTypeStyle = sf.createFeatureTypeStyle();
// RULE 1
// first rule to draw cities
Rule rule1 = sf.createRule();
rule1.setName("rule1");
rule1.getDescription().setTitle("City");
rule1.getDescription().setAbstract("Rule for drawing cities");
rule1.setFilter(ff.less(ff.property("POPULATION"), ff.literal(50000)));
//
// create the graphical mark used to represent a city
Stroke stroke = sf.stroke(ff.literal("#000000"), null, null, null, null, null, null);
Fill fill = sf.fill(null, ff.literal(Color.BLUE), ff.literal(1.0));
// OnLineResource implemented by gt-metadata - so no factory!
OnLineResourceImpl svg = new OnLineResourceImpl(new URI("file:city.svg"));
svg.freeze(); // freeze to prevent modification at runtime
OnLineResourceImpl png = new OnLineResourceImpl(new URI("file:city.png"));
png.freeze(); // freeze to prevent modification at runtime
//
// List of symbols is considered in order with the rendering engine choosing
// the first one it can handle. Allowing for svg, png, mark order
List<GraphicalSymbol> symbols = new ArrayList<GraphicalSymbol>();
symbols.add(sf.externalGraphic(svg, "svg", null)); // svg preferred
symbols.add(sf.externalGraphic(png, "png", null)); // png preferred
symbols.add(sf.mark(ff.literal("circle"), fill, stroke)); // simple circle backup plan
Expression opacity = null; // use default
Expression size = ff.literal(10);
Expression rotation = null; // use default
AnchorPoint anchor = null; // use default
Displacement displacement = null; // use default
// define a point symbolizer of a small circle
Graphic city = sf.graphic(symbols, opacity, size, rotation, anchor, displacement);
PointSymbolizer pointSymbolizer =
sf.pointSymbolizer("point", ff.property("the_geom"), null, null, city);
rule1.symbolizers().add(pointSymbolizer);
featureTypeStyle.rules().add(rule1);
//
// RULE 2 Default
List<GraphicalSymbol> dotSymbols = new ArrayList<GraphicalSymbol>();
dotSymbols.add(sf.mark(ff.literal("circle"), null, null));
Graphic dotGraphic = sf.graphic(dotSymbols, null, ff.literal(3), null, null, null);
PointSymbolizer dotSymbolizer = sf.pointSymbolizer("dot", null, null, null, dotGraphic);
List<org.opengis.style.Symbolizer> symbolizers = new ArrayList<org.opengis.style.Symbolizer>();
symbolizers.add(dotSymbolizer);
Filter other = null; // null will mark this rule as "other" accepting all remaining features
Rule rule2 =
sf.rule("default", null, null, Double.MIN_VALUE, Double.MAX_VALUE, symbolizers, other);
featureTypeStyle.rules().add(rule2);
style.featureTypeStyles().add(featureTypeStyle);
layer.userStyles().add(style);
sld.layers().add(layer);
// styleFactoryExample end
}
public synchronized void render(
Graphics2D destination, ReferencedEnvelope bounds, IProgressMonitor monitor)
throws RenderException {
int endLayerStatus = ILayer.DONE;
try {
if (bounds == null || bounds.isNull()) {
bounds = getContext().getImageBounds();
}
if (monitor.isCanceled()) return;
getContext().setStatus(ILayer.WAIT);
WebMapServer wms = getWMS();
GetMapRequest request = wms.createGetMapRequest();
// put in default exception format we understand as a client
// (if suppoted by the server)
WMSCapabilities capabilities = wms.getCapabilities();
if (capabilities
.getRequest()
.getGetMap()
.getFormats()
.contains(GetMapRequest.EXCEPTION_XML)) {
request.setExceptions(GetMapRequest.EXCEPTION_XML);
}
setImageFormat(wms, request);
if (monitor.isCanceled()) return;
double currScale = getContext().getViewportModel().getScaleDenominator();
List<ILayer> layers = getLayers();
for (int i = layers.size() - 1; i >= 0; i--) {
ILayer ilayer = layers.get(i);
Layer layer;
double minScale = 0;
double maxScale = Double.MAX_VALUE;
layer = ilayer.getResource(org.geotools.data.ows.Layer.class, null);
// check if there are min/max scale rules
StyleBlackboard sb = (StyleBlackboard) ilayer.getStyleBlackboard();
Style style = (Style) sb.lookup(Style.class);
if (style != null) {
Rule rule = style.getFeatureTypeStyles()[0].getRules()[0];
minScale = rule.getMinScaleDenominator();
maxScale = rule.getMaxScaleDenominator();
}
if (currScale >= minScale && currScale <= maxScale) {
// check for a wms style
StyleImpl wmsStyle =
(StyleImpl) ilayer.getStyleBlackboard().get(WMSStyleContent.WMSSTYLE);
if (wmsStyle != null) {
request.addLayer(layer, wmsStyle);
} else {
request.addLayer(layer);
}
}
}
if (monitor.isCanceled()) return;
List<Layer> wmsLayers = getWMSLayers();
if (wmsLayers == null || wmsLayers.isEmpty()) {
endLayerStatus = ILayer.WARNING;
return;
}
// figure out request CRS
String requestCRScode = findRequestCRS(wmsLayers, getViewportCRS(), getContext().getMap());
// TODO: make findRequestCRS more efficient (we are running CRS.decode at *least* twice)
CoordinateReferenceSystem requestCRS = CRS.decode(requestCRScode);
// figure out viewport
// ReferencedEnvelope viewport;
// Envelope viewportBBox = getViewportBBox();
// CoordinateReferenceSystem viewportCRS = getViewportCRS();
// if (viewportBBox == null) {
// // change viewport to world
// viewportBBox = new Envelope(-180, 180, -90, 90);
// if (!DefaultGeographicCRS.WGS84.equals(viewportCRS)) { // reproject
// viewport = new ReferencedEnvelope(viewportBBox,
// DefaultGeographicCRS.WGS84);
// viewportBBox = viewport.transform(viewportCRS, true);
// }
// }
ReferencedEnvelope requestBBox = null;
Envelope backprojectedBBox = null; // request bbox projected to the viewport crs
// viewport = new ReferencedEnvelope(viewportBBox, viewportCRS);
// requestBBox = calculateRequestBBox(wmsLayers, viewport, requestCRS);
requestBBox = calculateRequestBBox(wmsLayers, bounds, requestCRS, capabilities.getVersion());
// check that a request is needed (not out of a bounds, invalid, etc)
if (requestBBox == NILL_BOX) {
endLayerStatus = ILayer.WARNING;
return;
}
assert requestBBox.getCoordinateReferenceSystem().equals(requestCRS);
if (requestBBox.getCoordinateReferenceSystem().equals(getViewportCRS())) {
backprojectedBBox = (Envelope) requestBBox;
} else {
backprojectedBBox = (Envelope) requestBBox.transform(getViewportCRS(), true);
}
if (WMSPlugin.isDebugging(Trace.RENDER)) {
WMSPlugin.trace("Viewport CRS: " + getViewportCRS().getName()); // $NON-NLS-1$
WMSPlugin.trace("Request CRS: " + requestCRS.getName()); // $NON-NLS-1$
WMSPlugin.trace("Context Image bounds: " + getContext().getImageBounds()); // $NON-NLS-1$
WMSPlugin.trace("Request BBox bounds: " + requestBBox); // $NON-NLS-1$
WMSPlugin.trace("Backprojected request bounds: " + backprojectedBBox); // $NON-NLS-1$
}
Service wmsService = capabilities.getService();
Dimension maxDimensions = new Dimension(wmsService.getMaxWidth(), wmsService.getMaxHeight());
// Dimension imageDimensions =
// calculateImageDimensions(getContext().getMapDisplay()
// .getDisplaySize(), maxDimensions, getViewportBBox(), backprojectedBBox);
Dimension imageDimensions =
calculateImageDimensions(
getContext().getImageSize(), maxDimensions, bounds, backprojectedBBox);
if (imageDimensions.height < 1 || imageDimensions.width < 1) {
endLayerStatus = ILayer.WARNING;
return;
}
request.setDimensions(
imageDimensions.width + "", imageDimensions.height + ""); // $NON-NLS-1$ //$NON-NLS-2$
// epsg could be under identifiers or authority.
Set<ReferenceIdentifier> identifiers = requestCRS.getIdentifiers();
String srs = identifiers.isEmpty() ? EPSG_4326 : identifiers.iterator().next().toString();
request.setSRS(srs); // EPSG_4326
request.setBBox(requestBBox);
// request.setBBox(requestBBox.getMinX() + "," + requestBBox.getMinY()+ "," +
// requestBBox.getMaxX()+ "," + requestBBox.getMaxY());
if (monitor.isCanceled()) return;
setFilter(wms, request);
// request.setProperty("DACS_ACS", null);
BufferedImage image = readImage(wms, request, monitor);
if (monitor.isCanceled()) return;
if (image == null) {
Exception e = new RuntimeException(Messages.BasicWMSRenderer2_unable_to_decode_image);
throw wrapException(e);
}
// backprojectedBBox or viewportBBox
renderGridCoverage(destination, backprojectedBBox, imageDimensions, requestBBox, image);
} catch (Exception e) {
if (e instanceof RenderException) throw (RenderException) e;
throw new RenderException(e);
} finally {
getContext().setStatus(endLayerStatus);
if (endLayerStatus == ILayer.DONE) {
// clear the status message (rendering was successful)
getContext().setStatusMessage(null);
}
}
}
/**
* Checks if a rule can be triggered at the current scale level
*
* @param r The rule
* @return true if the scale is compatible with the rule settings
*/
public static boolean isWithInScale(Rule r, double scaleDenominator) {
return ((r.getMinScaleDenominator() - TOLERANCE) <= scaleDenominator)
&& ((r.getMaxScaleDenominator() + TOLERANCE) > scaleDenominator);
}