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Library for generating PDFs and images from online webmapping services
package org.mapfish.print.attribute.map;
import com.google.common.base.Optional;
import com.google.common.collect.Lists;
import org.geotools.referencing.CRS;
import org.json.JSONException;
import org.json.JSONObject;
import org.mapfish.print.Constants;
import org.mapfish.print.ExceptionUtils;
import org.mapfish.print.attribute.ReflectiveAttribute;
import org.mapfish.print.config.Configuration;
import org.mapfish.print.config.ConfigurationException;
import org.mapfish.print.config.Template;
import org.mapfish.print.map.MapLayerFactoryPlugin;
import org.mapfish.print.parser.HasDefaultValue;
import org.mapfish.print.parser.MapfishParser;
import org.mapfish.print.wrapper.PArray;
import org.mapfish.print.wrapper.PObject;
import org.opengis.referencing.FactoryException;
import org.opengis.referencing.NoSuchAuthorityCodeException;
import org.opengis.referencing.crs.CoordinateReferenceSystem;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import java.awt.Dimension;
import java.util.List;
import java.util.Map;
/**
* Generic attributes for {@link org.mapfish.print.processor.map.CreateMapProcessor} and {@link
* org.mapfish.print.processor.map.CreateOverviewMapProcessor}.
*/
public abstract class GenericMapAttribute
extends ReflectiveAttribute {
/**
* The json key for the suggested DPI values in the client config.
*/
public static final String JSON_DPI_SUGGESTIONS = "dpiSuggestions";
/**
* The json key for the max DPI value in the client config.
*/
public static final String JSON_MAX_DPI = "maxDPI";
/**
* The json key for the width of the map in the client config.
*/
public static final String JSON_MAP_WIDTH = "width";
/**
* The json key for the height of the map in the client config.
*/
public static final String JSON_MAP_HEIGHT = "height";
/**
* The json key for the max width of the map in the client config (for mapExport).
*/
public static final String JSON_MAX_WIDTH = "maxWidth";
/**
* The json key for the max height of the map in the client config (for mapExport).
*/
public static final String JSON_MAX_HEIGHT = "maxHeight";
static final String JSON_ZOOM_LEVEL_SUGGESTIONS = "scales";
private static final double[] DEFAULT_DPI_VALUES = {72, 120, 200, 254, 300, 600, 1200, 2400};
@Autowired
private ApplicationContext applicationContext;
private Double maxDpi = null;
private double[] dpiSuggestions = null;
private ZoomLevels zoomLevels = null;
private Double zoomSnapTolerance = null;
private ZoomLevelSnapStrategy zoomLevelSnapStrategy = null;
private Boolean zoomSnapGeodetic = null;
private Integer width = null;
private Integer height = null;
private Integer maxWidth = null;
private Integer maxHeight = null;
/**
* Parse the given projection.
*
* @param projection The projection string.
* @param longitudeFirst longitudeFirst
*/
public static CoordinateReferenceSystem parseProjection(
final String projection, final Boolean longitudeFirst) {
try {
if (longitudeFirst == null) {
return CRS.decode(projection);
} else {
return CRS.decode(projection, longitudeFirst);
}
} catch (NoSuchAuthorityCodeException e) {
throw new RuntimeException(projection + " was not recognized as a crs code", e);
} catch (FactoryException e) {
throw new RuntimeException("Error occurred while parsing: " + projection, e);
}
}
public final Double getMaxDpi() {
return this.maxDpi;
}
public final void setMaxDpi(final Double maxDpi) {
this.maxDpi = maxDpi;
}
/**
* Get DPI suggestions.
*
* @return DPI suggestions
*/
public final double[] getDpiSuggestions() {
if (this.dpiSuggestions == null) {
List list = Lists.newArrayList();
for (double suggestion: DEFAULT_DPI_VALUES) {
if (suggestion <= this.maxDpi) {
list.add(suggestion);
}
}
double[] suggestions = new double[list.size()];
for (int i = 0; i < suggestions.length; i++) {
suggestions[i] = list.get(i);
}
return suggestions;
}
return this.dpiSuggestions;
}
/**
* Suggestions for DPI values to use. Typically these are used by the client to create a UI for a user.
*
* @param dpiSuggestions DPI suggestions
*/
public final void setDpiSuggestions(final double[] dpiSuggestions) {
this.dpiSuggestions = dpiSuggestions;
}
public final Integer getWidth() {
return this.width;
}
/**
* The width of the map in pixels. This value should match the width of the sub-report in the JasperReport
* template.
*
* @param width Width
*/
public final void setWidth(final Integer width) {
this.width = width;
}
public final Integer getHeight() {
return this.height;
}
/**
* The height of the map in pixels. This value should match the height of the sub-report in the
* JasperReport template.
*
* @param height Height
*/
public final void setHeight(final Integer height) {
this.height = height;
}
public final Integer getMaxWidth() {
return this.maxWidth;
}
public final void setMaxWidth(final Integer maxWidth) {
this.maxWidth = maxWidth;
}
public final Integer getMaxHeight() {
return this.maxHeight;
}
public final void setMaxHeight(final Integer maxHeight) {
this.maxHeight = maxHeight;
}
public final void setZoomLevels(final ZoomLevels zoomLevels) {
this.zoomLevels = zoomLevels;
}
public final void setZoomSnapTolerance(final Double zoomSnapTolerance) {
this.zoomSnapTolerance = zoomSnapTolerance;
}
public final void setZoomLevelSnapStrategy(final ZoomLevelSnapStrategy zoomLevelSnapStrategy) {
this.zoomLevelSnapStrategy = zoomLevelSnapStrategy;
}
public final void setZoomSnapGeodetic(final Boolean zoomSnapGeodetic) {
this.zoomSnapGeodetic = zoomSnapGeodetic;
}
@Override
public void validate(final List validationErrors, final Configuration configuration) {
if (this.width != null && this.maxWidth != null) {
validationErrors.add(new ConfigurationException(
"cannot set both width and maxWidth in " + getClass().getName()));
}
if (this.height != null && this.maxHeight != null) {
validationErrors.add(new ConfigurationException(
"cannot set both height and maxHeight in " + getClass().getName()));
}
if (this.width != null && this.width < 1) {
validationErrors.add(new ConfigurationException(
"width field is not legal: " + this.width + " in " + getClass().getName()));
}
if (this.height != null && this.height < 1) {
validationErrors.add(new ConfigurationException(
"height field is not legal: " + this.height + " in " + getClass().getName()));
}
if (this.maxWidth != null && this.maxWidth < 1) {
validationErrors.add(new ConfigurationException(
"max width field is not legal: " + this.width + " in " + getClass().getName()));
}
if (this.maxHeight != null && this.maxHeight < 1) {
validationErrors
.add(new ConfigurationException("max height field is not legal: " + this.height + " in " +
getClass().getName()));
}
if (this.getMaxDpi() == null || this.getMaxDpi() < 1) {
validationErrors.add(
new ConfigurationException("maxDpi field is not legal: " + this.getMaxDpi() + " in " +
getClass().getName()));
}
if (this.getMaxDpi() != null && this.getDpiSuggestions() != null) {
for (double dpi: this.getDpiSuggestions()) {
if (dpi < 1 || dpi > this.getMaxDpi()) {
validationErrors.add(new ConfigurationException(
"dpiSuggestions contains an invalid value: " + dpi + " in " +
getClass().getName()));
}
}
}
}
@Override
protected final Optional getClientInfo() throws JSONException {
final JSONObject jsonObject = new JSONObject();
jsonObject.put(JSON_DPI_SUGGESTIONS, getDpiSuggestions());
if (this.zoomLevels != null) {
jsonObject.put(JSON_ZOOM_LEVEL_SUGGESTIONS, this.zoomLevels.getScaleDenominators());
}
jsonObject.put(JSON_MAX_DPI, this.maxDpi);
jsonObject.put(JSON_MAP_WIDTH, this.width);
jsonObject.put(JSON_MAP_HEIGHT, this.height);
jsonObject.put(JSON_MAX_WIDTH, this.maxWidth);
jsonObject.put(JSON_MAX_HEIGHT, this.maxHeight);
return Optional.of(jsonObject);
}
/**
* The value of {@link GenericMapAttribute}.
*/
public abstract class GenericMapAttributeValues {
/**
* The default projection.
*/
protected static final String DEFAULT_PROJECTION = "EPSG:3857";
private static final String TYPE = "type";
private final Template template;
/**
* The width of the map.
*/
@HasDefaultValue
public Integer width = null;
/**
* The height of the map.
*/
@HasDefaultValue
public Integer height = null;
/**
* The projection of the map.
*/
@HasDefaultValue
public String projection = null;
/**
* The rotation of the map.
*/
@HasDefaultValue
public Double rotation = null;
/**
* Indicates if the map should adjust its scale/zoom level to be equal to one of those defined in the
* configuration file.
*
*
* @see #isUseNearestScale()
*/
@HasDefaultValue
public Boolean useNearestScale = null;
/**
* Indicates if the map should adjust its bounds.
*
*
* @see #isUseAdjustBounds()
*/
@HasDefaultValue
public Boolean useAdjustBounds = null;
/**
* By default the normal axis order as specified in EPSG code will be used when parsing projections.
* However the requestor can override this by explicitly declaring that longitude axis is first.
*/
@HasDefaultValue
public Boolean longitudeFirst = null;
/**
* Should the vector style definitions be adapted to the target DPI resolution? (Default: true)
*
* The style definitions are often optimized for a use with OpenLayers (which uses a DPI value of 72).
* When these styles are used to print with a higher DPI value, lines often look too thin, label are
* too small, etc.
*
* If this property is set to `true`, the style definitions will be scaled to the target DPI value.
*/
@HasDefaultValue
public boolean dpiSensitiveStyle = true;
private List mapLayers;
/**
* Constructor.
*
* @param template the template this map is part of.
*/
public GenericMapAttributeValues(final Template template) {
this.template = template;
}
/**
* Constructor.
*
* @param template the template this map is part of.
* @param width the width of the map.
* @param height the height of the map.
*/
public GenericMapAttributeValues(final Template template, final Integer width, final Integer height) {
this.template = template;
this.width = width;
this.height = height;
}
/**
* Validate the values provided by the request data and construct MapBounds and parse the layers.
*/
public void postConstruct() throws FactoryException {
if (this.width == null) {
throw new IllegalArgumentException("width parameter was not set.");
}
if (this.height == null) {
throw new IllegalArgumentException("height parameter was not set.");
}
//check maximum dimensions
if (getMaxWidth() != null && this.width > getMaxWidth()) {
throw new IllegalArgumentException(
"width parameter was " + getWidth() + " must be limited to "
+ getMaxWidth() + ".");
}
if (getMaxHeight() != null && this.height > getMaxHeight()) {
throw new IllegalArgumentException(
"height parameter was " + getHeight() + " must be limited to "
+ getMaxHeight() + ".");
}
this.mapLayers = parseLayers();
}
private List parseLayers() {
List layerList = Lists.newArrayList();
for (int i = 0; i < this.getRawLayers().size(); i++) {
try {
PObject layer = this.getRawLayers().getObject(i);
// only render if the opacity is greater than 0
if (Math.abs(layer.optDouble("opacity", 1.0)) > Constants.OPACITY_PRECISION) {
parseSingleLayer(layerList, layer);
}
} catch (Throwable throwable) {
throw ExceptionUtils.getRuntimeException(throwable);
}
}
return layerList;
}
@SuppressWarnings("unchecked")
private void parseSingleLayer(
final List layerList,
final PObject layer) throws Throwable {
final Map layerParsers =
GenericMapAttribute.this.applicationContext.getBeansOfType(MapLayerFactoryPlugin.class);
for (MapLayerFactoryPlugin layerParser: layerParsers.values()) {
final boolean layerApplies = layerParser.getTypeNames().contains(layer.getString(TYPE).
toLowerCase());
if (layerApplies) {
Object param = layerParser.createParameter();
MapfishParser.parse(this.template.getConfiguration().isThrowErrorOnExtraParameters(),
layer, param, TYPE);
final MapLayer newLayer = layerParser.parse(this.template, param);
if (layerList.isEmpty()) {
layerList.add(newLayer);
} else {
final int lastLayerIndex = layerList.size() - 1;
final MapLayer lastLayer = layerList.get(lastLayerIndex);
Optional combinedLayer = lastLayer.tryAddLayer(newLayer);
if (combinedLayer.isPresent()) {
layerList.remove(lastLayerIndex);
layerList.add(lastLayerIndex, combinedLayer.get());
} else {
layerList.add(newLayer);
}
}
return;
}
}
StringBuilder message = new StringBuilder(String.format("\nLayer with type: '%s' is not " +
"currently supported. Options " +
"include: ",
layer.getString(TYPE)));
for (MapLayerFactoryPlugin mapLayerFactoryPlugin: layerParsers.values()) {
for (Object name: mapLayerFactoryPlugin.getTypeNames()) {
message.append("\n");
message.append("\t* ").append(name);
}
}
throw new IllegalArgumentException(message.toString());
}
/**
* Parse the projection from a string.
*
* @return the crs
*/
protected final CoordinateReferenceSystem parseProjection() {
return GenericMapAttribute.parseProjection(getProjection(), this.longitudeFirst);
}
/**
* Return the DPI value for the map. This method is abstract because the dpi value is optional for the
* overview map, but must be given for the normal map. So, in the overview map the field is defined
* with a @HasDefaultValue annotation.
*/
public abstract Double getDpi();
/**
* Return the JSON layer definition. This method is abstract for the same reasons as {@link
* #getDpi()}.
*/
public abstract PArray getRawLayers();
/**
* Set the JSON layer definition. This method is abstract for the same reasons as {@link #getDpi()}.
*
* @param layers the new layers
*/
public abstract void setRawLayers(PArray layers);
public List getLayers() {
return Lists.newArrayList(this.mapLayers);
}
public final Template getTemplate() {
return this.template;
}
public final Dimension getMapSize() {
return new Dimension(this.width, this.height);
}
public final Integer getWidth() {
return this.width;
}
public final Integer getHeight() {
return this.height;
}
/**
* Gets the rotation.
*
* @return the rotation
*/
public Double getRotation() {
if (this.rotation == null) {
return null;
}
return Math.toRadians(this.rotation);
}
public String getProjection() {
return this.projection;
}
/**
* Return true if requestData has useNearestScale and configuration has some zoom levels defined.
*/
public Boolean isUseNearestScale() {
return this.useNearestScale && GenericMapAttribute.this.zoomLevels != null;
}
/**
* Return true if requestData has useNearestScale and configuration has some zoom levels defined.
*/
public Boolean isUseAdjustBounds() {
return this.useAdjustBounds;
}
public final boolean isDpiSensitiveStyle() {
return this.dpiSensitiveStyle;
}
public ZoomLevels getZoomLevels() {
return GenericMapAttribute.this.zoomLevels;
}
public Double getZoomSnapTolerance() {
return GenericMapAttribute.this.zoomSnapTolerance;
}
public ZoomLevelSnapStrategy getZoomLevelSnapStrategy() {
return GenericMapAttribute.this.zoomLevelSnapStrategy;
}
public Boolean getZoomSnapGeodetic() {
return GenericMapAttribute.this.zoomSnapGeodetic;
}
public double[] getDpiSuggestions() {
return GenericMapAttribute.this.getDpiSuggestions();
}
/**
* @param value The value or null.
* @param defaultValue The default value.
* @param A type.
*/
protected final T getValueOr(final T value, final T defaultValue) {
if (value != null) {
return value;
} else {
return defaultValue;
}
}
}
}
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