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See:
Description
| Interface Summary | |
| AnchorPoint | An AnchorPoint identifies the location inside a textlabel to use as an "anchor" for positioning it relative to a point geometry. |
| ChannelSelection | The ChannelSelection element specifies the false-color channel selection for a multi-spectral raster source (such as a multi-band satellite-imagery source). |
| ColorMap | The ColorMap element defines either the colors of a palette-type raster source or the mapping of fixed-numeric pixel values to colors. |
| ColorMapEntry | A basic interface for objects which can hold color map entries. |
| ContrastEnhancement | The ContrastEnhancement object defines contrast enhancement for a channel of a false-color image or for a color image. |
| Displacement | A Displacement gives X and Y offset displacements to use for rendering a text label near a point. |
| Extent | An Extent gives feature/coverage/raster/matrix dimension extent. |
| ExternalGraphic | Holds a reference to an external graphics file with a URL to its location and its expected MIME type. |
| FeatureTypeConstraint | A FeatureTypeConstraint identifies a specific feature type and supplies fitlering. |
| FeatureTypeStyle | How to style a feature type. |
| Fill | The Fill object encapsulates the graphical-symbolization parameters for areas of geometries. |
| Font | A system-independent object for holding SLD font information. |
| Font.Style | Enumeration of allow font-style values. |
| Font.Weight | Enumeration of allow font-weight values. |
| Graphic | A Graphic is a "graphical symbol" with an inherent shape, color(s), and possibly size. |
| Halo | A Halo fills an extended area outside the glyphs of a rendered textlabel to make it easier to read over a background. |
| ImageOutline | ImageOutline specifies how individual source rasters in a multi-raster set (such as a set of satellite-image scenes) should be outlined to make the individual-image locations visible. |
| LabelPlacement | The "LabelPlacement" specifies where and how a text label should be rendered relative to a geometry. |
| LayerFeatureConstraints | LayerFeatureConstraints define what features and feature types are referenced in a layer. |
| LinePlacement | The "LinePlacement" specifies where and how a text label should be rendered relative to a line. |
| LineSymbolizer | A symbolizer describes how a feature should appear on a map. |
| Mark | A Mark element defines a "shape" which has coloring applied to it. |
| NamedLayer | A NamedLayer is used to refer to a layer that has a name in a WMS. |
| NamedStyle | A NamedStyle is used to refer to a style that has a name in a WMS. |
| OverlapBehavior | OverlapBehavior tells a system how to behave when multiple raster images in a layer overlap each other, for example with satellite-image scenes. |
| PointPlacement | A PointPlacement specifies how a text label is positioned relative to a geometric point. |
| PointSymbolizer | A symbolizer describes how a feature should appear on a map. |
| PolygonSymbolizer | A symbolizer describes how a polygon feature should appear on a map. |
| RasterSymbolizer | The RasterSymbolizer describes how to render raster/matrix-coverage data (e.g., satellite photos, DEMs). |
| RemoteOWS | A RemoteOWS gives a reference to a remote WFS/WCS/other-OWS server. |
| Rule | A rule is used to attach a condition to, and group, the individual symbolizers used for rendering. |
| SelectedChannelType | A class to hold Channel information for use in ChannelSelction objects. |
| ShadedRelief | The ShadedRelief element selects the application of relief shading (or ?hill shading?) to an image for a three-dimensional visual effect. |
| Stroke | The Stroke object encapsulates the graphical-symbolization parameters for linear geometries. |
| Style | Indicates how geographical content should be displayed (we call this a style for simplicity; in the spec it is called a UserStyle (user-defined style)). |
| StyledLayer | 'StyledLayer' is not part of the SLD 1.0 spec. |
| StyledLayerDescriptor | Holds styling information (from a StyleLayerDescriptor document). |
| StyleFactory | Abstract base class for implementing style factories. |
| StyleFactory2 | Abstract base class for implementing style factories. |
| StyleVisitor | An interface for classes that want to perform operations on a Style hierarchy. |
| Symbol | This an empty interface for styling symbol objects to implement |
| Symbolizer | This is the parent interface of all Symbolizers. |
| TextMark | Note: this isn't in the SLD spec |
| TextSymbolizer | A symbolizer describes how a feature should appear on a map. |
| TextSymbolizer2 | Contains label shield hack |
| UserLayer | A UserLayer allows a user-defined layer to be built from WFS and WCS data. |
| Class Summary | |
| AbstractStyleFactory | Abstract base class for implementing style factories. |
| AnchorPointImpl | DOCUMENT ME! |
| BasicLineStyle | A style object is quite hard to set up, involving fills, strokes, symbolizers and rules. |
| BasicPolygonStyle | A style object is quite hard to set up, involving fills, strokes, symbolizers and rules. |
| ChannelSelectionImpl | DOCUMENT ME! |
| ColorMapEntryImpl | Default color map entry implementation |
| ColorMapImpl | A simple implementation of the color map interface. |
| ContrastEnhancementImpl | The ContrastEnhancement object defines contrast enhancement for a channel of a false-color image or for a color image. |
| DisplacementImpl | DOCUMENT ME! |
| ExtentImpl | |
| ExternalGraphicImpl | DOCUMENT ME! |
| FeatureTypeConstraintImpl | |
| FeatureTypeStyleImpl | DOCUMENT ME! |
| FillImpl | |
| FontImpl | Provides a Java representation of the Font element of an SLD. |
| GraphicImpl | DOCUMENT ME! |
| HaloImpl | DOCUMENT ME! |
| ImageOutlineImpl | |
| LayerFeatureConstraintsImpl | |
| LinePlacementImpl | DOCUMENT ME! |
| LineSymbolizerImpl | Provides a representation of a LineSymbolizer in an SLD Document. |
| MarkImpl | DOCUMENT ME! |
| NamedLayerImpl | DOCUMENT ME! |
| NamedStyleImpl | A NamedStyle is used to refer to a style that has a name in a WMS. |
| PointPlacementImpl | DOCUMENT ME! |
| PointSymbolizerImpl | Provides a Java representation of the PointSymbolizer. |
| PolygonSymbolizerImpl | Provides a representation of a PolygonSymbolizer in an SLD Document. |
| RasterSymbolizerImpl | DOCUMENT ME! |
| RemoteOWSImpl | |
| RuleImpl | Provides the default implementation of Rule. |
| SelectedChannelTypeImpl | DOCUMENT ME! |
| ShadedReliefImpl | DOCUMENT ME! |
| SLD | Utility class for working with Geotools SLD objects. |
| SLDInlineFeatureParser | |
| SLDParser | TODO: This really needs to be container ready |
| SLDTransformer | Producers SLD to an output stream. |
| StrokeImpl | Provides a Java representation of the Stroke object in an SLD document. |
| StyleAttributeExtractor | =========================================================================== if you're modifying this, you probably should also take a look at StyleAttributeExtractorTruncated =========================================================================== |
| StyleAttributeExtractorTruncated | A simple visitor whose purpose is to extract the set of attributes used by a
Style, that is, those that the Style expects to find in order to work
properly
This is very similiar to StyleAttributeExtractor, but with these differences:
a) it doesnt the count the |
| StyleBuilder | An utility class designed to ease style building by convinience methods. |
| StyledLayerDescriptorImpl | Holds styling information (from a StyleLayerDescriptor document). |
| StyledLayerImpl | DOCUMENT ME! |
| StyleFactoryFinder | |
| StyleFactoryImpl | Factory for creating Styles. |
| StyleImpl | DOCUMENT ME! |
| TextMarkImpl | DOCUMENT ME! |
| TextSymbolizerImpl | Provides a Java representation of an SLD TextSymbolizer that defines how text symbols should be rendered. |
| UserLayerImpl | DJB: on inlinefeature support: The inline features also lets you "sort of" make your WMS into a WFS-T. |
| XMLEncoder | Deprecated. Use org.geotools.styling.SLDTransformer |
| Exception Summary | |
| StyleFactoryCreationException | An exception that can be thrown by the StyleFactory if it fails to create the implementation of the StyleFactory. |
Allows for symbolization of geospatial data.
For many of us in geotools *this* is the reason we came along for the ride - a pretty picture. The contents of this package are adapted from the OpenGIS® Styled Layer Descriptor specification v1.0.0.
We may experiment with our own (or SLD 1.1) ideas but will mark such experiments for you. This is only an issue of you are considering writing out these objects for interoptability with other systems.
General stratagy for supporting multiple SLD versions (and experiments):
SLD is an XML specification, the definition of objects capturing this information, the binding of objects to these XML documents, and the provision of events on object modification all need to be accounted for.
StyleFactory factory = StyleFactoryFinder.createStyleFactory();
StyleLayerDescriptor sld = factory.createStyleLayerDescriptor();
// an empty sld document
sld.setTitle("Basic Black");
sld.setAbstract("Grayscale style suitable for use with photocopiers");
When creating a complex data structure direct use of a Factory is a pain. Which leads us to the next section.
Notes:
When constructing a complex data structure, such as an SLD document, the use of a Factory is a bit of a pain. That is where StyleBuilder is brought to bare. A Builder is simply a class that help you construct a complicated data structure, for a make involved/interesting example of a builder have a look at the graph package.
private Style buildStyle() throws Exception {
StyleBuilder sb = new StyleBuilder();
FilterFactory ff = sb.getFilterFactory();
Style style = sb.createStyle();
style.setName("MyStyle");
// "testPoint" feature type style
Mark testMark = sb.createMark(sb.attributeExpression("name"),
sb.createFill(Color.RED, 0.5), null);
Graphic graph = sb.createGraphic(null, new Mark[] { testMark }, null,
sb.literalExpression(1), sb.attributeExpression("size"),
sb.attributeExpression("rotation"));
style.addFeatureTypeStyle(sb.createFeatureTypeStyle("testPoint",
new Symbolizer[] { sb.createPointSymbolizer(graph) }));
// "labelPoint" feature type style
AnchorPoint anchorPoint = sb.createAnchorPoint(sb.attributeExpression("X"),
sb.attributeExpression("Y"));
PointPlacement pointPlacement = sb.createPointPlacement(anchorPoint, null,
sb.literalExpression(0));
TextSymbolizer textSymbolizer = sb.createTextSymbolizer(sb.createFill(Color.BLACK),
new Font[] { sb.createFont("Lucida Sans", 10), sb.createFont("Arial", 10) },
sb.createHalo(), sb.attributeExpression("name"), pointPlacement, null);
Mark circle = sb.createMark(StyleBuilder.MARK_CIRCLE, Color.RED);
Graphic graph2 = sb.createGraphic(null, circle, null, 1, 4, 0);
PointSymbolizer pointSymbolizer = sb.createPointSymbolizer(graph2);
style.addFeatureTypeStyle(sb.createFeatureTypeStyle("labelPoint",
new Symbolizer[] { textSymbolizer, pointSymbolizer }));
return style;
}
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