com.luciad.view.lightspeed.style

LuciadLightspeedClass TLspScaleBasedStyler

java.lang.Object

com.luciad.view.lightspeed.style.styler.ALspStyler

com.luciad.view.lightspeed.style.TLspScaleBasedStyler

All Implemented Interfaces:

ILspStyler

public final class TLspScaleBasedStyler
extends ALspStyler

Styler that switches between multiple stylers depending on the map scale. It is allowed to have multiple styles for the same scale range, and scale ranges are allowed to overlap.

Examples

TLspScaleBasedStylerBuilder can be used to create a new instance of this class. The following example sets up a scale based styler that switches between styles at a map scale of 1:10.000:

    TLspScaleBasedStyler scaleBasedStyler =
        TLspScaleBasedStylerBuilder.newBuilder()
                                   .styles(TLcdMapScale.MAX_ZOOMED_OUT, new TLcdMapScale(1d / 10_000), zoomedOutStyle)
                                   .styles(new TLcdMapScale(1d / 10_000), TLcdMapScale.MAX_ZOOMED_IN, zoomedInStyle)
                                   .build();

TLspScaleBasedStylerBuilder can also be used in combination with getStylersByScaleRange() to create a variation of an existing styler. The following example derives a new styler by copying the stylers from a given TLspScaleBasedStyler that apply at map scale of 1:1000:

    TLspScaleBasedStylerBuilder builder = TLspScaleBasedStylerBuilder.newBuilder();
    existingStyler.getStylersByScaleRange().entrySet().stream()
                  .filter(entry -> entry.getKey().contains(new TLcdMapScale(1d / 1_000)))
                  .forEach(entry -> {
                    for (ILspStyler styler : entry.getValue()) {
                      builder.styler(entry.getKey(), styler);
                    }
                  });
    TLspScaleBasedStyler newStyler = builder.build();

Since:

2021.1

See Also:

TLspScaleBasedStylerBuilder

Method Summary

Modifier and Type	Method and Description
Map<TLcdDimensionInterval<TLcdMapScale>,List<ILspStyler>>	getStylersByScaleRange() Returns the map scale intervals and associated stylers of this styler.
static TLspScaleBasedStylerBuilder	newBuilder() Creates a new builder without configured stylers.
void	style(Collection<?> aObjects, ALspStyleCollector aStyleCollector, TLspContext aContext) Implementation of ILspStyler.style that applies the configured stylers, based on the map scale of the current view.

Methods inherited from class com.luciad.view.lightspeed.style.styler.ALspStyler

addStyleChangeListener, fireStyleChangeEvent, fireStyleChangeEvent, removeStyleChangeListener

Methods inherited from class java.lang.Object

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

Method Detail

newBuilder

public static TLspScaleBasedStylerBuilder newBuilder()

Creates a new builder without configured stylers.

Returns:

the new builder.

getStylersByScaleRange

public Map<TLcdDimensionInterval<TLcdMapScale>,List<ILspStyler>> getStylersByScaleRange()

Returns the map scale intervals and associated stylers of this styler.

Returns:

An immutable mapping of map scale intervals to the list of associated stylers.

style

public void style(Collection<?> aObjects,
                  ALspStyleCollector aStyleCollector,
                  TLspContext aContext)

Implementation of ILspStyler.style that applies the configured stylers, based on the map scale of the current view.

Parameters:

aObjects - The objects to be styled.

aStyleCollector - A style collector to which all styling information should be passed, this collector is only valid within this method call, and can no longer be used afterwards.

aContext - Provides context information that may affect styling, such as view specific properties.