Package org.geotools.api.style

The following package is an implementation of OGC Symbology Encoding 1.1.0 and ISO 19117 : Portrayal

This package is a merge from package GeoAPI SLD (v1.0.0) and GeoTools styling.

Symbology Encoding overview

Source : http://www.opengeospatial.org/standards/symbol
File : 05-077r4

This document defines an XML encoding that can be used for styling feature and coverage data.
Symbology Encoding includes the FeatureTypeStyle as root element. These elements include all information for styling the data such as Filter and different kinds of Symbolizers.
As Symbology Encoding is a grammar for styling map data independent of any service interface specification it can be used flexibly by a number of services that style georeferenced information or store styling information that can be used by other services.

Symbology Encoding is a specification that define styles in xml files. This GeoAPI implementation may be a bit different from the original XSD structure to offer a better integration in the Java langage and to follow ISO 19117.

Here are schemas breafly describing the java implementation :

- Styles have N rules, and each rule have N Symbolizers.

- We found Symbolizer for each data type we can portray.

Interface Summary

Interface	Description
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 the mapping of palette-type raster colors or fixed- numeric pixel values to colors using an Interpolate or Categorize SE function
ColorMapEntry	A basic interface for objects which can hold color map entries.
ColorReplacement	The ColorReplacement element, which may occur multiple times, allows to replace a color in the ExternalGraphic, the color specified in the OriginalColor sub-element, by another color as a result of a recode function as defined in Interpolate.
ContrastEnhancement	The ContrastEnhancement object defines contrast enhancement for a channel of a false-color image or for a color image.
ContrastMethodStrategy	This interface defines the strategy that a ContrastEnhancement will use to execute the ContrastMethod that it has defined.
Description	A Description is used to store various informations who describe an element.
Displacement	The Displacement gives the X and Y displacements from the original geometry.
ExtensionSymbolizer	An symbolizer interface for all unnormalized symbolizers, This interface should be used for vendor specific symbolizers.
Extent	An Extent gives feature/coverage/raster/matrix dimension extent.
ExternalGraphic	Points to an external file that contains an image of some kind, such as a CGM, JPG, or SVG.
ExternalMark	The alternative to a WellKnownName is an external mark format.
FeatureTypeConstraint	A FeatureTypeConstraint identifies a specific feature type and supplies filtering.
FeatureTypeStyle	Represents a style that applies to features or coverage.
Fill	Indicates how the interior of polygons will be filled.
Font	The Font element identifies a font of a certain family, style, and size.
Font.Style	Enumeration of allow font-style values.
Font.Weight	Enumeration of allow font-weight values.
Graphic	A Graphic is a "graphic symbol" with an inherent shape, color(s), and possibly size.
GraphicalSymbol	Common superclass for the two types of markers that can appear as children of a Graphic object, namely Mark and ExternalGraphic.
GraphicFill	A GraphicFill is a simple interface with only a graphic but additional parameters for the GraphicFill may be provided in the future to provide more control the exact style of filling.
GraphicLegend	The LegendGraphic element allow an optional explicit graphic symbolizer to do displayed in a legend for the rule.
GraphicStroke	The GraphicStroke element both indicates that a repeated-linear-graphic stroke type will be used.
Halo	A Halo is a type of Fill that is applied to the backgrounds of font glyphs.
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 element is used to position a label relative to a point, line string or polygon.
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	Gives directions for how to draw lines on a map.
Mark	Indicate that one of a few predefined shapes will be drawn at the points of the geometry.
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.
OtherText	Allows open ended extensions for text oriented rendering formats.
OverlapBehavior
PointPlacement	A PointPlacement specifies how a text label is positioned relative to a geometric point.
PointSymbolizer	Indicates how to draw point geometries on a map.
PolygonSymbolizer	Holds the information that indicates how to draw the lines and the interior of polygons.
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.
ResourceLocator	Provides a hook to locate online resources in ExternalGraphic instances.
Rule	A rule consists of two important parts: a filter and a list of symbols.
SelectedChannelType	A class to hold Channel information for use in ChannelSelection objects.
ShadedRelief	The ShadedRelief element selects the application of relief shading (or “hill shading”) to an image for a three-dimensional visual effect.
Stroke	Contains all the information needed to draw styled lines.
Style	A UserStyle is at the same semantic level as a NamedStyle used in the context of a WMS.
StyledLayer	'StyledLayer' is not part of the SLD 1.0 spec.
StyledLayerDescriptor	Holds styling information (from a StyleLayerDescriptor document).
StyleFactory	Factory used in the production of style objects.
StyleVisitor	An interface for classes that want to perform operations on a Style hierarchy.
Symbol	This a mostly empty interface for styling symbol objects to implement
Symbolizer	Abstract superclass of the symbolizers defined by the Symbology Encoding specification.
TextSymbolizer	Indicates how text will be drawn.
TraversingStyleVisitor	An interface for classes that want to perform operations on a Style hierarchy.
UserLayer	A UserLayer allows a user-defined layer to be built from WFS and WCS data.

Class Summary

Class	Description
ContrastMethod	The ContrastEnhancement element defines contrast enhancement for a channel of a false-color image or for a color image.
SemanticType	Identifies the more general "type" of geometry that this style is meant to act upon.
Stroke.ConstantStroke

Enum Summary

Enum	Description
FeatureTypeStyle.RenderingSelectionOptions
OverlapBehaviorEnum	The OverlapBehavior element tells a system how to behave when multiple raster images in a layer overlap each other, for example with satellite-image scenes.
TextSymbolizer.DisplacementMode	DisplacementMode associates an angle with each enum value
TextSymbolizer.GraphicPlacement	GraphicPlacemnts controls the position of the Graphic associated with the label
TextSymbolizer.PolygonAlignOptions	Enumerated options that can be used with polygonAlign.