org.mapfish.print.map.image

Class AbstractSingleImageLayer

java.lang.Object

org.mapfish.print.map.geotools.AbstractGeotoolsLayer

org.mapfish.print.map.image.AbstractSingleImageLayer

All Implemented Interfaces:

MapLayer

Direct Known Subclasses:

ImageLayer, WmsLayer

public abstract class AbstractSingleImageLayer
extends AbstractGeotoolsLayer

Common implementation for layers that are represented as a single grid coverage image.

Nested Class Summary

Nested classes/interfaces inherited from interface org.mapfish.print.attribute.map.MapLayer

MapLayer.RenderType

Field Summary

Fields

Modifier and Type	Field and Description
protected Configuration	configuration The configuration.
protected com.codahale.metrics.MetricRegistry	registry The metrics object.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractSingleImageLayer(java.util.concurrent.ExecutorService executorService, StyleSupplier<org.geotools.coverage.grid.GridCoverage2D> styleSupplier, AbstractLayerParams params, com.codahale.metrics.MetricRegistry registry, Configuration configuration) Constructor.

Method Summary

Modifier and Type	Method and Description
protected java.awt.image.BufferedImage	createErrorImage(java.awt.Rectangle area) Create an error image.
protected java.awt.image.BufferedImage	fetchImage(org.springframework.http.client.ClientHttpRequest request, MapfishMapContext transformer) Fetch the given image from the web.
double	getImageBufferScaling() Get the scale ratio between the tiles resolution and the target resolution.
protected java.util.List<? extends org.geotools.map.Layer>	getLayers(MfClientHttpRequestFactory httpRequestFactory, MapfishMapContext mapContext, Processor.ExecutionContext context) Get the DataStore object that contains the data for this layer.
StyleSupplier<org.geotools.coverage.grid.GridCoverage2D>	getStyleSupplier()
protected abstract java.awt.image.BufferedImage	loadImage(MfClientHttpRequestFactory requestFactory, MapfishMapContext transformer) Load the image at the requested size for the provided map bounds.

Methods inherited from class org.mapfish.print.map.geotools.AbstractGeotoolsLayer

getFailOnError, getLayerTransformer, getName, getOpacity, prefetchResources, prepareRender, render, supportsNativeRotation, tryAddLayer

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.mapfish.print.attribute.map.MapLayer

getRenderType

Field Detail

registry

@Nonnull
protected final com.codahale.metrics.MetricRegistry registry

The metrics object.

configuration

protected final Configuration configuration

The configuration.

Constructor Detail

AbstractSingleImageLayer

protected AbstractSingleImageLayer(java.util.concurrent.ExecutorService executorService,
                                   StyleSupplier<org.geotools.coverage.grid.GridCoverage2D> styleSupplier,
                                   AbstractLayerParams params,
                                   com.codahale.metrics.MetricRegistry registry,
                                   Configuration configuration)

Constructor.

Parameters:

executorService - the thread pool for doing the rendering.

styleSupplier - the style to use when drawing the constructed grid coverage on the map.

params - the parameters for this layer

registry - the metrics object.

configuration - the configuration

Method Detail

getLayers

protected final java.util.List<? extends org.geotools.map.Layer> getLayers(MfClientHttpRequestFactory httpRequestFactory,
                                                                           MapfishMapContext mapContext,
                                                                           Processor.ExecutionContext context)

Description copied from class: AbstractGeotoolsLayer

Get the DataStore object that contains the data for this layer.

Specified by:

getLayers in class AbstractGeotoolsLayer

Parameters:

httpRequestFactory - the factory for making http requests

mapContext - the map transformer

context - the job ID

loadImage

protected abstract java.awt.image.BufferedImage loadImage(MfClientHttpRequestFactory requestFactory,
                                                          MapfishMapContext transformer)
                                                   throws java.lang.Throwable

Load the image at the requested size for the provided map bounds.

Parameters:

requestFactory - the factory to use for making http requests

transformer - object containing map rendering information

Throws:

java.lang.Throwable

getImageBufferScaling

public final double getImageBufferScaling()

Description copied from interface: MapLayer

Get the scale ratio between the tiles resolution and the target resolution. Used to don't scale the tiles on tiled layer.

getStyleSupplier

public StyleSupplier<org.geotools.coverage.grid.GridCoverage2D> getStyleSupplier()

createErrorImage

protected java.awt.image.BufferedImage createErrorImage(java.awt.Rectangle area)

Create an error image.

Parameters:

area - The size of the image

fetchImage

protected java.awt.image.BufferedImage fetchImage(@Nonnull
                                                  org.springframework.http.client.ClientHttpRequest request,
                                                  @Nonnull
                                                  MapfishMapContext transformer)
                                           throws java.io.IOException

Fetch the given image from the web.

Parameters:

request - The request

transformer - The transformer

Returns:

The image

Throws:

java.io.IOException