com.mapbox.mapboxsdk.style.expressions.Expression Java Examples

/**
 * When the user switches an alternative route to a primary route, this method alters the
 * appearance.
 */
private void updatePrimaryRoute(String layerId, int index) {
  Layer layer = mapboxMap.getLayer(layerId);
  if (layer != null) {
    layer.setProperties(
      PropertyFactory.lineColor(match(
        Expression.toString(get(CONGESTION_KEY)),
        color(index == primaryRouteIndex ? routeDefaultColor : alternativeRouteDefaultColor),
        stop("moderate", color(index == primaryRouteIndex ? routeModerateColor : alternativeRouteModerateColor)),
        stop("heavy", color(index == primaryRouteIndex ? routeSevereColor : alternativeRouteSevereColor)),
        stop("severe", color(index == primaryRouteIndex ? routeSevereColor : alternativeRouteSevereColor))
        )
      )
    );
    if (index == primaryRouteIndex) {
      mapboxMap.removeLayer(layer);
      mapboxMap.addLayerBelow(layer, WAYPOINT_LAYER_ID);
    }
  }
}
 

private void convertExpression(@NonNull MapLocale mapLocale, Layer layer,
                               PropertyValue<?> textFieldProperty, boolean isStreetsV7) {
  Expression textFieldExpression = textFieldProperty.getExpression();
  if (textFieldExpression != null) {
    MapLocale newMapLocale = mapLocale;
    String mapLanguage = mapLocale.getMapLanguage();
    if (mapLanguage.startsWith("name_zh")) {
      // need to re-get mapLocale, since the default is for street-v8
      newMapLocale = getChineseMapLocale(mapLocale, isStreetsV7);
      Timber.d("reset mapLocale to: %s", newMapLocale.getMapLanguage());
    }

    String text = textFieldExpression.toString().replaceAll(EXPRESSION_REGEX, newMapLocale.getMapLanguage());
    if (text.startsWith("[\"step") && textFieldExpression.toArray().length % 2 == 0) {
      // got an invalid step expression from core, we need to add an additional name_x into step
      text = text.replaceAll(STEP_REGEX, STEP_TEMPLATE);
    }
    layer.setProperties(textField(raw(text)));
  }
}
 

private void convertExpressionV8(@NonNull MapLocale mapLocale, Layer layer, PropertyValue<?> textFieldProperty) {
  Expression textFieldExpression = textFieldProperty.getExpression();
  if (textFieldExpression != null) {
    String stringExpression =
      textFieldExpression.toString().replaceAll(EXPRESSION_V8_REGEX_LOCALIZED, EXPRESSION_V8_TEMPLATE_BASE);

    String mapLanguage = mapLocale.getMapLanguage();
    if (!mapLanguage.equals(MapLocale.ENGLISH)) {
      if (mapLanguage.equals("name_zh")) {
        mapLanguage = MapLocale.SIMPLIFIED_CHINESE;
      }
      stringExpression = stringExpression.replaceAll(EXPRESSION_V8_REGEX_BASE,
        String.format(Locale.US,
          EXPRESSION_V8_TEMPLATE_LOCALIZED,
          mapLanguage,
          mapLanguage));
    }
    layer.setProperties(textField(raw(stringExpression)));
  }
}
 

static LineLayer getLineLayer(String lineLayerId, float minZoom, Expression filter,
                              Expression lineColorExpression, Expression lineWidthExpression,
                              Expression lineOffsetExpression, Expression lineOpacityExpression) {
  LineLayer lineLayer = new LineLayer(lineLayerId, TrafficData.SOURCE_ID);
  lineLayer.setSourceLayer(TrafficData.SOURCE_LAYER);
  lineLayer.setProperties(
    lineCap(Property.LINE_CAP_ROUND),
    lineJoin(Property.LINE_JOIN_ROUND),
    lineColor(lineColorExpression),
    lineWidth(lineWidthExpression),
    lineOffset(lineOffsetExpression)
  );
  if (lineOpacityExpression != null) {
    lineLayer.setProperties(lineOpacity(lineOpacityExpression));
  }

  lineLayer.setFilter(filter);
  lineLayer.setMinZoom(minZoom);
  return lineLayer;
}
 

public void highlight(@NonNull Feature feature, AirMapAdvisory advisory) {
    // remove old highlight
    unhighlight();

    // add new highlight
    String sourceId = feature.getStringProperty("ruleset_id");
    highlightLayerId = "airmap|highlight|line|" + sourceId;
    LineLayer highlightLayer = map.getMap().getStyle().getLayerAs(highlightLayerId);
    highlightLayer.setSourceLayer(sourceId + "_" + advisory.getType().toString());

    // feature's airspace_id can be an int or string (tile server bug), so match on either
    Expression filter;
    try {
        int airspaceId = Integer.parseInt(advisory.getId());
        filter = Expression.any(Expression.eq(Expression.get("id"), advisory.getId()), Expression.eq(Expression.get("id"), airspaceId));
    } catch (NumberFormatException e) {
        filter = Expression.any(Expression.eq(Expression.get("id"), advisory.getId()));
    }
    highlightLayer.setFilter(filter);
}
 

public void highlight(Feature feature) {
    String id = feature.getStringProperty("id");
    String type = feature.getStringProperty("category");

    // remove old highlight
    unhighlight();

    // add new highlight
    String sourceId = feature.getStringProperty("ruleset_id");
    highlightLayerId = "airmap|highlight|line|" + sourceId;
    LineLayer highlightLayer = map.getMap().getStyle().getLayerAs(highlightLayerId);
    highlightLayer.setSourceLayer(sourceId + "_" + type);

    // feature's airspace_id can be an int or string (tile server bug), so match on either
    Expression filter;
    try {
        int airspaceId = Integer.parseInt(id);
        filter = Expression.any(Expression.eq(Expression.get("id"), id), Expression.eq(Expression.get("id"), airspaceId));
    } catch (NumberFormatException e) {
        filter = Expression.any(Expression.eq(Expression.get("id"), id));
    }
    highlightLayer.setFilter(filter);
}
 

private void initLastPositionLayer() {
    GeoJsonSource lastPositionSource = new GeoJsonSource(LAST_POSITION_SOURCE);
    mapboxStyle.addSource(lastPositionSource);
    Expression markerSize =
            switchCase(toBool(get(MARKER_SELECTED)), literal(1.75f), literal(1.25f));
    mapboxStyle.addLayerBelow(new SymbolLayer(LAST_POSITION_LAYER, LAST_POSITION_SOURCE).withProperties(
            iconImage(get(LAST_POSITION_ICON)),
                 /* all info window and marker image to appear at the same time*/
            iconAllowOverlap(true),
            iconIgnorePlacement(true),
            iconSize(markerSize),
            textField(get(LAST_POSITION_LABEL)),
            textAnchor(TEXT_ANCHOR_TOP),
            textOffset(new Float[]{0.0f, 1.0f}),
            textAllowOverlap(true),
            textIgnorePlacement(true)
    ).withFilter(filterProvider.getTimeFilter()), INFO_WINDOW_LAYER);
}
 

/**
 * Add the route layer to the map either using the custom style values or the default.
 */
private void addRouteLayer(String layerId, String sourceId, int index) {
  float scale = index == primaryRouteIndex ? routeScale : alternativeRouteScale;
  Layer routeLayer = new LineLayer(layerId, sourceId).withProperties(
    PropertyFactory.lineCap(Property.LINE_CAP_ROUND),
    PropertyFactory.lineJoin(Property.LINE_JOIN_ROUND),
    PropertyFactory.lineWidth(interpolate(
      exponential(1.5f), zoom(),
      stop(4f, 3f * scale),
      stop(10f, 4f * scale),
      stop(13f, 6f * scale),
      stop(16f, 10f * scale),
      stop(19f, 14f * scale),
      stop(22f, 18f * scale)
      )
    ),
    PropertyFactory.lineColor(match(
      Expression.toString(get(CONGESTION_KEY)),
      color(index == primaryRouteIndex ? routeDefaultColor : alternativeRouteDefaultColor),
      stop("moderate", color(index == primaryRouteIndex ? routeModerateColor : alternativeRouteModerateColor)),
      stop("heavy", color(index == primaryRouteIndex ? routeSevereColor : alternativeRouteSevereColor)),
      stop("severe", color(index == primaryRouteIndex ? routeSevereColor : alternativeRouteSevereColor))
      )
    )
  );
  MapUtils.addLayerToMap(mapboxMap, routeLayer, belowLayer);
}
 

private void drawWaypointMarkers(@NonNull MapboxMap mapboxMap, @Nullable Drawable originMarker,
                                 @Nullable Drawable destinationMarker) {
  if (originMarker == null || destinationMarker == null) {
    return;
  }

  SymbolLayer waypointLayer = mapboxMap.getLayerAs(WAYPOINT_LAYER_ID);
  if (waypointLayer == null) {
    Bitmap bitmap = MapImageUtils.getBitmapFromDrawable(originMarker);
    mapboxMap.addImage("originMarker", bitmap);
    bitmap = MapImageUtils.getBitmapFromDrawable(destinationMarker);
    mapboxMap.addImage("destinationMarker", bitmap);

    waypointLayer = new SymbolLayer(WAYPOINT_LAYER_ID, WAYPOINT_SOURCE_ID).withProperties(
      PropertyFactory.iconImage(match(
        Expression.toString(get("waypoint")), literal("originMarker"),
        stop("origin", literal("originMarker")),
        stop("destination", literal("destinationMarker"))
        )
      ),
      PropertyFactory.iconSize(interpolate(
        exponential(1.5f), zoom(),
        stop(22f, 2.8f),
        stop(12f, 1.3f),
        stop(10f, 0.8f),
        stop(0f, 0.6f)
      )),
      PropertyFactory.iconPitchAlignment(Property.ANCHOR_MAP),
      PropertyFactory.iconAllowOverlap(true),
      PropertyFactory.iconIgnorePlacement(true)
    );
    layerIds.add(WAYPOINT_LAYER_ID);
    MapUtils.addLayerToMap(mapboxMap, waypointLayer, belowLayer);
  }
}
 

@Test
public void testInitialization() {
  circleManager = new CircleManager(mapView, mapboxMap, style, coreElementProvider, null, null, draggableAnnotationController);
  verify(style).addSource(geoJsonSource);
  verify(style).addLayer(circleLayer);
  assertTrue(circleManager.dataDrivenPropertyUsageMap.size() > 0);
  for (Boolean value : circleManager.dataDrivenPropertyUsageMap.values()) {
    assertFalse(value);
  }
  verify(circleLayer).setProperties(circleManager.constantPropertyUsageMap.values().toArray(new PropertyValue[0]));
  verify(circleLayer, times(0)).setFilter(any(Expression.class));
  verify(draggableAnnotationController).onSourceUpdated();
  verify(geoJsonSource).setGeoJson(any(FeatureCollection.class));
}
 

@Test
public void testGeoJsonOptionsInitialization() {
  circleManager = new CircleManager(mapView, mapboxMap, style, coreElementProvider, null, geoJsonOptions, draggableAnnotationController);
  verify(style).addSource(optionedGeoJsonSource);
  verify(style).addLayer(circleLayer);
  assertTrue(circleManager.dataDrivenPropertyUsageMap.size() > 0);
  for (Boolean value : circleManager.dataDrivenPropertyUsageMap.values()) {
    assertFalse(value);
  }
  verify(circleLayer).setProperties(circleManager.constantPropertyUsageMap.values().toArray(new PropertyValue[0]));
  verify(circleLayer, times(0)).setFilter(any(Expression.class));
  verify(draggableAnnotationController).onSourceUpdated();
  verify(optionedGeoJsonSource).setGeoJson(any(FeatureCollection.class));
}
 

@Test
public void testCircleLayerFilter() {
  circleManager = new CircleManager(mapView, mapboxMap, style, coreElementProvider, null, null, draggableAnnotationController);
  Expression expression = Expression.eq(Expression.get("test"), "selected");
  verify(circleLayer, times(0)).setFilter(expression);

  circleManager.setFilter(expression);
  verify(circleLayer, times(1)).setFilter(expression);

  when(circleLayer.getFilter()).thenReturn(expression);
  assertEquals(expression, circleManager.getFilter());
  assertEquals(expression, circleManager.layerFilter);
}
 

@Test
public void testInitialization() {
  fillManager = new FillManager(mapView, mapboxMap, style, coreElementProvider, null, null, draggableAnnotationController);
  verify(style).addSource(geoJsonSource);
  verify(style).addLayer(fillLayer);
  assertTrue(fillManager.dataDrivenPropertyUsageMap.size() > 0);
  for (Boolean value : fillManager.dataDrivenPropertyUsageMap.values()) {
    assertFalse(value);
  }
  verify(fillLayer).setProperties(fillManager.constantPropertyUsageMap.values().toArray(new PropertyValue[0]));
  verify(fillLayer, times(0)).setFilter(any(Expression.class));
  verify(draggableAnnotationController).onSourceUpdated();
  verify(geoJsonSource).setGeoJson(any(FeatureCollection.class));
}
 

@Test
public void testGeoJsonOptionsInitialization() {
  fillManager = new FillManager(mapView, mapboxMap, style, coreElementProvider, null, geoJsonOptions, draggableAnnotationController);
  verify(style).addSource(optionedGeoJsonSource);
  verify(style).addLayer(fillLayer);
  assertTrue(fillManager.dataDrivenPropertyUsageMap.size() > 0);
  for (Boolean value : fillManager.dataDrivenPropertyUsageMap.values()) {
    assertFalse(value);
  }
  verify(fillLayer).setProperties(fillManager.constantPropertyUsageMap.values().toArray(new PropertyValue[0]));
  verify(fillLayer, times(0)).setFilter(any(Expression.class));
  verify(draggableAnnotationController).onSourceUpdated();
  verify(optionedGeoJsonSource).setGeoJson(any(FeatureCollection.class));
}
 

@Test
public void testFillLayerFilter() {
  fillManager = new FillManager(mapView, mapboxMap, style, coreElementProvider, null, null, draggableAnnotationController);
  Expression expression = Expression.eq(Expression.get("test"), "selected");
  verify(fillLayer, times(0)).setFilter(expression);

  fillManager.setFilter(expression);
  verify(fillLayer, times(1)).setFilter(expression);

  when(fillLayer.getFilter()).thenReturn(expression);
  assertEquals(expression, fillManager.getFilter());
  assertEquals(expression, fillManager.layerFilter);
}
 

@Test
public void testInitialization() {
  symbolManager = new SymbolManager(mapView, mapboxMap, style, coreElementProvider, null, null, draggableAnnotationController);
  verify(style).addSource(geoJsonSource);
  verify(style).addLayer(symbolLayer);
  assertTrue(symbolManager.dataDrivenPropertyUsageMap.size() > 0);
  for (Boolean value : symbolManager.dataDrivenPropertyUsageMap.values()) {
    assertFalse(value);
  }
  verify(symbolLayer).setProperties(symbolManager.constantPropertyUsageMap.values().toArray(new PropertyValue[0]));
  verify(symbolLayer, times(0)).setFilter(any(Expression.class));
  verify(draggableAnnotationController).onSourceUpdated();
  verify(geoJsonSource).setGeoJson(any(FeatureCollection.class));
}
 

@Test
public void testGeoJsonOptionsInitialization() {
  symbolManager = new SymbolManager(mapView, mapboxMap, style, coreElementProvider, null, geoJsonOptions, draggableAnnotationController);
  verify(style).addSource(optionedGeoJsonSource);
  verify(style).addLayer(symbolLayer);
  assertTrue(symbolManager.dataDrivenPropertyUsageMap.size() > 0);
  for (Boolean value : symbolManager.dataDrivenPropertyUsageMap.values()) {
    assertFalse(value);
  }
  verify(symbolLayer).setProperties(symbolManager.constantPropertyUsageMap.values().toArray(new PropertyValue[0]));
  verify(symbolLayer, times(0)).setFilter(any(Expression.class));
  verify(draggableAnnotationController).onSourceUpdated();
  verify(optionedGeoJsonSource).setGeoJson(any(FeatureCollection.class));
}
 

@Test
public void testSymbolLayerFilter() {
  symbolManager = new SymbolManager(mapView, mapboxMap, style, coreElementProvider, null, null, draggableAnnotationController);
  Expression expression = Expression.eq(Expression.get("test"), "selected");
  verify(symbolLayer, times(0)).setFilter(expression);

  symbolManager.setFilter(expression);
  verify(symbolLayer, times(1)).setFilter(expression);

  when(symbolLayer.getFilter()).thenReturn(expression);
  assertEquals(expression, symbolManager.getFilter());
  assertEquals(expression, symbolManager.layerFilter);
}
 

@Test
public void testInitialization() {
  lineManager = new LineManager(mapView, mapboxMap, style, coreElementProvider, null, null, draggableAnnotationController);
  verify(style).addSource(geoJsonSource);
  verify(style).addLayer(lineLayer);
  assertTrue(lineManager.dataDrivenPropertyUsageMap.size() > 0);
  for (Boolean value : lineManager.dataDrivenPropertyUsageMap.values()) {
    assertFalse(value);
  }
  verify(lineLayer).setProperties(lineManager.constantPropertyUsageMap.values().toArray(new PropertyValue[0]));
  verify(lineLayer, times(0)).setFilter(any(Expression.class));
  verify(draggableAnnotationController).onSourceUpdated();
  verify(geoJsonSource).setGeoJson(any(FeatureCollection.class));
}
 

@Test
public void testGeoJsonOptionsInitialization() {
  lineManager = new LineManager(mapView, mapboxMap, style, coreElementProvider, null, geoJsonOptions, draggableAnnotationController);
  verify(style).addSource(optionedGeoJsonSource);
  verify(style).addLayer(lineLayer);
  assertTrue(lineManager.dataDrivenPropertyUsageMap.size() > 0);
  for (Boolean value : lineManager.dataDrivenPropertyUsageMap.values()) {
    assertFalse(value);
  }
  verify(lineLayer).setProperties(lineManager.constantPropertyUsageMap.values().toArray(new PropertyValue[0]));
  verify(lineLayer, times(0)).setFilter(any(Expression.class));
  verify(draggableAnnotationController).onSourceUpdated();
  verify(optionedGeoJsonSource).setGeoJson(any(FeatureCollection.class));
}
 

@Test
public void testLineLayerFilter() {
  lineManager = new LineManager(mapView, mapboxMap, style, coreElementProvider, null, null, draggableAnnotationController);
  Expression expression = Expression.eq(Expression.get("test"), "selected");
  verify(lineLayer, times(0)).setFilter(expression);

  lineManager.setFilter(expression);
  verify(lineLayer, times(1)).setFilter(expression);

  when(lineLayer.getFilter()).thenReturn(expression);
  assertEquals(expression, lineManager.getFilter());
  assertEquals(expression, lineManager.layerFilter);
}
 

static Expression getLineColorFunction(@ColorInt int low, @ColorInt int moderate, @ColorInt int heavy,
                                       @ColorInt int severe) {
  return match(get("congestion"), Expression.color(Color.TRANSPARENT),
    stop("low", Expression.color(low)),
    stop("moderate", Expression.color(moderate)),
    stop("heavy", Expression.color(heavy)),
    stop("severe", Expression.color(severe)));
}
 

public void highlight(AirMapAdvisory advisory) {
    RectF mapRectF = new RectF(getLeft(), getTop(), getRight(), getBottom());
    Expression filter = Expression.has("id");
    List<Feature> selectedFeatures = getMap().queryRenderedFeatures(mapRectF, filter);

    for (Feature feature : selectedFeatures) {
        if (advisory.getId().equals(feature.getStringProperty("id"))) {
            mapStyleController.highlight(feature, advisory);
            zoomToFeatureIfNecessary(feature);
            break;
        }
    }
}
 

public void hideInactiveAirspace(){
    Expression hasActive = Expression.has("active");
    Expression activeIsTrue = Expression.eq(Expression.get("active"), true);
    Expression active = Expression.all(hasActive, activeIsTrue);
    map.getMap().getStyle(style -> {
        for(Layer layer : Objects.requireNonNull(style.getLayers())){
            if(layer.getId().contains("airmap")){
                if(layer instanceof FillLayer){
                    if(((FillLayer) layer).getFilter() != null){
                        ((FillLayer) layer).setFilter(Expression.any(((FillLayer) layer).getFilter(), active));
                    } else {
                        ((FillLayer) layer).setFilter(active);
                    }

                } else if (layer instanceof  LineLayer){
                    if(((LineLayer) layer).getFilter() != null){
                        ((LineLayer) layer).setFilter(Expression.any(((LineLayer) layer).getFilter(), active));
                    } else {
                        ((LineLayer) layer).setFilter(active);
                    }

                } else if(layer instanceof  SymbolLayer){
                    if(((SymbolLayer) layer).getFilter() != null){
                        ((SymbolLayer) layer).setFilter(Expression.any(((SymbolLayer) layer).getFilter(), active));
                    } else {
                        ((SymbolLayer) layer).setFilter(active);
                    }

                } else {
                    Timber.e("Unknown layer");

                }
            }
        }
    });
}
 

public Expression getTimeFilter() {
    if (expressions.get(LAST_POSITION) != null) {
        return expressions.get(LAST_POSITION);
    } else if (expressions.get(RANGE) != null) {
        return expressions.get(RANGE);
    }

    return all();
}
 

private void initInfoWindowLayer() {
    Expression iconOffset = switchCase(
            toBool(get(LAST_LOCATION)), literal(new Float[] {-2f, -25f}),
            literal(new Float[] {-2f, -20f}));
    GeoJsonSource infoWindowSource = new GeoJsonSource(INFO_WINDOW_SRC);
    mapboxStyle.addSource(infoWindowSource);
    mapboxStyle.addLayer(new SymbolLayer(INFO_WINDOW_LAYER, INFO_WINDOW_SRC).withProperties(
            iconImage(INFO_WINDOW_ID),
            iconAnchor(ICON_ANCHOR_BOTTOM_LEFT),
                 /* all info window and marker image to appear at the same time*/
            iconAllowOverlap(true),
                /* offset the info window to be above the marker */
            iconOffset(iconOffset)
    ));
}
 

/**
 * Set filter on the managed circles.
 *
 * @param expression expression
 */
 @Override
public void setFilter(@NonNull Expression expression) {
  layerFilter = expression;
  layer.setFilter(layerFilter);
}
 

/**
 * Set filter on the managed fills.
 *
 * @param expression expression
 */
 @Override
public void setFilter(@NonNull Expression expression) {
  layerFilter = expression;
  layer.setFilter(layerFilter);
}
 

/**
 * Set filter on the managed symbols.
 *
 * @param expression expression
 */
 @Override
public void setFilter(@NonNull Expression expression) {
  layerFilter = expression;
  layer.setFilter(layerFilter);
}
 

/**
 * Set filter on the managed lines.
 *
 * @param expression expression
 */
 @Override
public void setFilter(@NonNull Expression expression) {
  layerFilter = expression;
  layer.setFilter(layerFilter);
}