SymbolLayer class

An icon or a text label.

Inheritance

Constructors

SymbolLayer({required String id, Visibility? visibility, List<Object>? visibilityExpression, List<Object>? filter, double? minZoom, double? maxZoom, String? slot, required String sourceId, String? sourceLayer, bool? iconAllowOverlap, List<Object>? iconAllowOverlapExpression, IconAnchor? iconAnchor, List<Object>? iconAnchorExpression, bool? iconIgnorePlacement, List<Object>? iconIgnorePlacementExpression, String? iconImage, List<Object>? iconImageExpression, bool? iconKeepUpright, List<Object>? iconKeepUprightExpression, List<double?>? iconOffset, List<Object>? iconOffsetExpression, bool? iconOptional, List<Object>? iconOptionalExpression, double? iconPadding, List<Object>? iconPaddingExpression, IconPitchAlignment? iconPitchAlignment, List<Object>? iconPitchAlignmentExpression, double? iconRotate, List<Object>? iconRotateExpression, IconRotationAlignment? iconRotationAlignment, List<Object>? iconRotationAlignmentExpression, double? iconSize, List<Object>? iconSizeExpression, IconTextFit? iconTextFit, List<Object>? iconTextFitExpression, List<double?>? iconTextFitPadding, List<Object>? iconTextFitPaddingExpression, bool? symbolAvoidEdges, List<Object>? symbolAvoidEdgesExpression, SymbolPlacement? symbolPlacement, List<Object>? symbolPlacementExpression, double? symbolSortKey, List<Object>? symbolSortKeyExpression, double? symbolSpacing, List<Object>? symbolSpacingExpression, bool? symbolZElevate, List<Object>? symbolZElevateExpression, SymbolZOrder? symbolZOrder, List<Object>? symbolZOrderExpression, bool? textAllowOverlap, List<Object>? textAllowOverlapExpression, TextAnchor? textAnchor, List<Object>? textAnchorExpression, String? textField, List<Object>? textFieldExpression, List<String?>? textFont, List<Object>? textFontExpression, bool? textIgnorePlacement, List<Object>? textIgnorePlacementExpression, TextJustify? textJustify, List<Object>? textJustifyExpression, bool? textKeepUpright, List<Object>? textKeepUprightExpression, double? textLetterSpacing, List<Object>? textLetterSpacingExpression, double? textLineHeight, List<Object>? textLineHeightExpression, double? textMaxAngle, List<Object>? textMaxAngleExpression, double? textMaxWidth, List<Object>? textMaxWidthExpression, List<double?>? textOffset, List<Object>? textOffsetExpression, bool? textOptional, List<Object>? textOptionalExpression, double? textPadding, List<Object>? textPaddingExpression, TextPitchAlignment? textPitchAlignment, List<Object>? textPitchAlignmentExpression, double? textRadialOffset, List<Object>? textRadialOffsetExpression, double? textRotate, List<Object>? textRotateExpression, TextRotationAlignment? textRotationAlignment, List<Object>? textRotationAlignmentExpression, double? textSize, List<Object>? textSizeExpression, TextTransform? textTransform, List<Object>? textTransformExpression, List<String?>? textVariableAnchor, List<Object>? textVariableAnchorExpression, List<String?>? textWritingMode, List<Object>? textWritingModeExpression, int? iconColor, List<Object>? iconColorExpression, double? iconColorSaturation, List<Object>? iconColorSaturationExpression, double? iconEmissiveStrength, List<Object>? iconEmissiveStrengthExpression, double? iconHaloBlur, List<Object>? iconHaloBlurExpression, int? iconHaloColor, List<Object>? iconHaloColorExpression, double? iconHaloWidth, List<Object>? iconHaloWidthExpression, double? iconImageCrossFade, List<Object>? iconImageCrossFadeExpression, double? iconOcclusionOpacity, List<Object>? iconOcclusionOpacityExpression, double? iconOpacity, List<Object>? iconOpacityExpression, List<double?>? iconTranslate, List<Object>? iconTranslateExpression, IconTranslateAnchor? iconTranslateAnchor, List<Object>? iconTranslateAnchorExpression, int? textColor, List<Object>? textColorExpression, double? textEmissiveStrength, List<Object>? textEmissiveStrengthExpression, double? textHaloBlur, List<Object>? textHaloBlurExpression, int? textHaloColor, List<Object>? textHaloColorExpression, double? textHaloWidth, List<Object>? textHaloWidthExpression, double? textOcclusionOpacity, List<Object>? textOcclusionOpacityExpression, double? textOpacity, List<Object>? textOpacityExpression, List<double?>? textTranslate, List<Object>? textTranslateExpression, TextTranslateAnchor? textTranslateAnchor, List<Object>? textTranslateAnchorExpression})

Properties

filter ↔ List<Object>?
An expression specifying conditions on source features. Only features that match the filter are displayed.
read / writeinherited
hashCode → int
The hash code for this object.
read-onlyinherited
iconAllowOverlap ↔ bool?
If true, the icon will be visible even if it collides with other previously drawn symbols. Default value: false.
read / write
iconAllowOverlapExpression ↔ List<Object>?
If true, the icon will be visible even if it collides with other previously drawn symbols. Default value: false.
read / write
iconAnchor ↔ IconAnchor?
Part of the icon placed closest to the anchor. Default value: "center".
read / write
iconAnchorExpression ↔ List<Object>?
Part of the icon placed closest to the anchor. Default value: "center".
read / write
iconColor ↔ int?
The color of the icon. This can only be used with SDF icons. Default value: "#000000".
read / write
iconColorExpression ↔ List<Object>?
The color of the icon. This can only be used with SDF icons. Default value: "#000000".
read / write
iconColorSaturation ↔ double?
Increase or reduce the saturation of the symbol icon. Default value: 0. Value range: -1, 1
read / write
iconColorSaturationExpression ↔ List<Object>?
Increase or reduce the saturation of the symbol icon. Default value: 0. Value range: -1, 1
read / write
iconEmissiveStrength ↔ double?
Controls the intensity of light emitted on the source features. Default value: 1. Minimum value: 0.
read / write
iconEmissiveStrengthExpression ↔ List<Object>?
Controls the intensity of light emitted on the source features. Default value: 1. Minimum value: 0.
read / write
iconHaloBlur ↔ double?
Fade out the halo towards the outside. Default value: 0. Minimum value: 0.
read / write
iconHaloBlurExpression ↔ List<Object>?
Fade out the halo towards the outside. Default value: 0. Minimum value: 0.
read / write
iconHaloColor ↔ int?
The color of the icon's halo. Icon halos can only be used with SDF icons. Default value: "rgba(0, 0, 0, 0)".
read / write
iconHaloColorExpression ↔ List<Object>?
The color of the icon's halo. Icon halos can only be used with SDF icons. Default value: "rgba(0, 0, 0, 0)".
read / write
iconHaloWidth ↔ double?
Distance of halo to the icon outline. Default value: 0. Minimum value: 0.
read / write
iconHaloWidthExpression ↔ List<Object>?
Distance of halo to the icon outline. Default value: 0. Minimum value: 0.
read / write
iconIgnorePlacement ↔ bool?
If true, other symbols can be visible even if they collide with the icon. Default value: false.
read / write
iconIgnorePlacementExpression ↔ List<Object>?
If true, other symbols can be visible even if they collide with the icon. Default value: false.
read / write
iconImage ↔ String?
Name of image in sprite to use for drawing an image background.
read / write
iconImageCrossFade ↔ double?
Controls the transition progress between the image variants of icon-image. Zero means the first variant is used, one is the second, and in between they are blended together. Default value: 0. Value range: 0, 1
read / write
iconImageCrossFadeExpression ↔ List<Object>?
Controls the transition progress between the image variants of icon-image. Zero means the first variant is used, one is the second, and in between they are blended together. Default value: 0. Value range: 0, 1
read / write
iconImageExpression ↔ List<Object>?
Name of image in sprite to use for drawing an image background.
read / write
iconKeepUpright ↔ bool?
If true, the icon may be flipped to prevent it from being rendered upside-down. Default value: false.
read / write
iconKeepUprightExpression ↔ List<Object>?
If true, the icon may be flipped to prevent it from being rendered upside-down. Default value: false.
read / write
iconOcclusionOpacity ↔ double?
The opacity at which the icon will be drawn in case of being depth occluded. Not supported on globe zoom levels. Default value: 1. Value range: 0, 1
read / write
iconOcclusionOpacityExpression ↔ List<Object>?
The opacity at which the icon will be drawn in case of being depth occluded. Not supported on globe zoom levels. Default value: 1. Value range: 0, 1
read / write
iconOffset ↔ List<double?>?
Offset distance of icon from its anchor. Positive values indicate right and down, while negative values indicate left and up. Each component is multiplied by the value of icon-size to obtain the final offset in pixels. When combined with icon-rotate the offset will be as if the rotated direction was up. Default value: 0,0.
read / write
iconOffsetExpression ↔ List<Object>?
Offset distance of icon from its anchor. Positive values indicate right and down, while negative values indicate left and up. Each component is multiplied by the value of icon-size to obtain the final offset in pixels. When combined with icon-rotate the offset will be as if the rotated direction was up. Default value: 0,0.
read / write
iconOpacity ↔ double?
The opacity at which the icon will be drawn. Default value: 1. Value range: 0, 1
read / write
iconOpacityExpression ↔ List<Object>?
The opacity at which the icon will be drawn. Default value: 1. Value range: 0, 1
read / write
iconOptional ↔ bool?
If true, text will display without their corresponding icons when the icon collides with other symbols and the text does not. Default value: false.
read / write
iconOptionalExpression ↔ List<Object>?
If true, text will display without their corresponding icons when the icon collides with other symbols and the text does not. Default value: false.
read / write
iconPadding ↔ double?
Size of the additional area around the icon bounding box used for detecting symbol collisions. Default value: 2. Minimum value: 0.
read / write
iconPaddingExpression ↔ List<Object>?
Size of the additional area around the icon bounding box used for detecting symbol collisions. Default value: 2. Minimum value: 0.
read / write
iconPitchAlignment ↔ IconPitchAlignment?
Orientation of icon when map is pitched. Default value: "auto".
read / write
iconPitchAlignmentExpression ↔ List<Object>?
Orientation of icon when map is pitched. Default value: "auto".
read / write
iconRotate ↔ double?
Rotates the icon clockwise. Default value: 0.
read / write
iconRotateExpression ↔ List<Object>?
Rotates the icon clockwise. Default value: 0.
read / write
iconRotationAlignment ↔ IconRotationAlignment?
In combination with symbol-placement, determines the rotation behavior of icons. Default value: "auto".
read / write
iconRotationAlignmentExpression ↔ List<Object>?
In combination with symbol-placement, determines the rotation behavior of icons. Default value: "auto".
read / write
iconSize ↔ double?
Scales the original size of the icon by the provided factor. The new pixel size of the image will be the original pixel size multiplied by icon-size. 1 is the original size; 3 triples the size of the image. Default value: 1. Minimum value: 0.
read / write
iconSizeExpression ↔ List<Object>?
Scales the original size of the icon by the provided factor. The new pixel size of the image will be the original pixel size multiplied by icon-size. 1 is the original size; 3 triples the size of the image. Default value: 1. Minimum value: 0.
read / write
iconTextFit ↔ IconTextFit?
Scales the icon to fit around the associated text. Default value: "none".
read / write
iconTextFitExpression ↔ List<Object>?
Scales the icon to fit around the associated text. Default value: "none".
read / write
iconTextFitPadding ↔ List<double?>?
Size of the additional area added to dimensions determined by icon-text-fit, in clockwise order: top, right, bottom, left. Default value: 0,0,0,0.
read / write
iconTextFitPaddingExpression ↔ List<Object>?
Size of the additional area added to dimensions determined by icon-text-fit, in clockwise order: top, right, bottom, left. Default value: 0,0,0,0.
read / write
iconTranslate ↔ List<double?>?
Distance that the icon's anchor is moved from its original placement. Positive values indicate right and down, while negative values indicate left and up. Default value: 0,0.
read / write
iconTranslateAnchor ↔ IconTranslateAnchor?
Controls the frame of reference for icon-translate. Default value: "map".
read / write
iconTranslateAnchorExpression ↔ List<Object>?
Controls the frame of reference for icon-translate. Default value: "map".
read / write
iconTranslateExpression ↔ List<Object>?
Distance that the icon's anchor is moved from its original placement. Positive values indicate right and down, while negative values indicate left and up. Default value: 0,0.
read / write
id ↔ String
The ID of the Layer.
read / writeinherited
maxZoom ↔ double?
The maximum zoom level for the layer. At zoom levels equal to or greater than the maxzoom, the layer will be hidden.
read / writeinherited
minZoom ↔ double?
The minimum zoom level for the layer. At zoom levels less than the minzoom, the layer will be hidden.
read / writeinherited
runtimeType → Type
A representation of the runtime type of the object.
read-onlyinherited
slot ↔ String?
The slot this layer is assigned to. If specified, and a slot with that name exists, it will be placed at that position in the layer order.
read / writeinherited
sourceId ↔ String
The id of the source.
read / write
sourceLayer ↔ String?
A source layer is an individual layer of data within a vector source. A vector source can have multiple source layers.
read / write
symbolAvoidEdges ↔ bool?
If true, the symbols will not cross tile edges to avoid mutual collisions. Recommended in layers that don't have enough padding in the vector tile to prevent collisions, or if it is a point symbol layer placed after a line symbol layer. When using a client that supports global collision detection, like Mapbox GL JS version 0.42.0 or greater, enabling this property is not needed to prevent clipped labels at tile boundaries. Default value: false.
read / write
symbolAvoidEdgesExpression ↔ List<Object>?
If true, the symbols will not cross tile edges to avoid mutual collisions. Recommended in layers that don't have enough padding in the vector tile to prevent collisions, or if it is a point symbol layer placed after a line symbol layer. When using a client that supports global collision detection, like Mapbox GL JS version 0.42.0 or greater, enabling this property is not needed to prevent clipped labels at tile boundaries. Default value: false.
read / write
symbolPlacement ↔ SymbolPlacement?
Label placement relative to its geometry. Default value: "point".
read / write
symbolPlacementExpression ↔ List<Object>?
Label placement relative to its geometry. Default value: "point".
read / write
symbolSortKey ↔ double?
Sorts features in ascending order based on this value. Features with lower sort keys are drawn and placed first. When icon-allow-overlap or text-allow-overlap is false, features with a lower sort key will have priority during placement. When icon-allow-overlap or text-allow-overlap is set to true, features with a higher sort key will overlap over features with a lower sort key.
read / write
symbolSortKeyExpression ↔ List<Object>?
Sorts features in ascending order based on this value. Features with lower sort keys are drawn and placed first. When icon-allow-overlap or text-allow-overlap is false, features with a lower sort key will have priority during placement. When icon-allow-overlap or text-allow-overlap is set to true, features with a higher sort key will overlap over features with a lower sort key.
read / write
symbolSpacing ↔ double?
Distance between two symbol anchors. Default value: 250. Minimum value: 1.
read / write
symbolSpacingExpression ↔ List<Object>?
Distance between two symbol anchors. Default value: 250. Minimum value: 1.
read / write
symbolZElevate ↔ bool?
Position symbol on buildings (both fill extrusions and models) rooftops. In order to have minimal impact on performance, this is supported only when fill-extrusion-height is not zoom-dependent and remains unchanged. For fading in buildings when zooming in, fill-extrusion-vertical-scale should be used and symbols would raise with building rooftops. Symbols are sorted by elevation, except in cases when viewport-y sorting or symbol-sort-key are applied. Default value: false.
read / write
symbolZElevateExpression ↔ List<Object>?
Position symbol on buildings (both fill extrusions and models) rooftops. In order to have minimal impact on performance, this is supported only when fill-extrusion-height is not zoom-dependent and remains unchanged. For fading in buildings when zooming in, fill-extrusion-vertical-scale should be used and symbols would raise with building rooftops. Symbols are sorted by elevation, except in cases when viewport-y sorting or symbol-sort-key are applied. Default value: false.
read / write
symbolZOrder ↔ SymbolZOrder?
Determines whether overlapping symbols in the same layer are rendered in the order that they appear in the data source or by their y-position relative to the viewport. To control the order and prioritization of symbols otherwise, use symbol-sort-key. Default value: "auto".
read / write
symbolZOrderExpression ↔ List<Object>?
Determines whether overlapping symbols in the same layer are rendered in the order that they appear in the data source or by their y-position relative to the viewport. To control the order and prioritization of symbols otherwise, use symbol-sort-key. Default value: "auto".
read / write
textAllowOverlap ↔ bool?
If true, the text will be visible even if it collides with other previously drawn symbols. Default value: false.
read / write
textAllowOverlapExpression ↔ List<Object>?
If true, the text will be visible even if it collides with other previously drawn symbols. Default value: false.
read / write
textAnchor ↔ TextAnchor?
Part of the text placed closest to the anchor. Default value: "center".
read / write
textAnchorExpression ↔ List<Object>?
Part of the text placed closest to the anchor. Default value: "center".
read / write
textColor ↔ int?
The color with which the text will be drawn. Default value: "#000000".
read / write
textColorExpression ↔ List<Object>?
The color with which the text will be drawn. Default value: "#000000".
read / write
textEmissiveStrength ↔ double?
Controls the intensity of light emitted on the source features. Default value: 1. Minimum value: 0.
read / write
textEmissiveStrengthExpression ↔ List<Object>?
Controls the intensity of light emitted on the source features. Default value: 1. Minimum value: 0.
read / write
textField ↔ String?
Value to use for a text label. If a plain string is provided, it will be treated as a formatted with default/inherited formatting options. SDF images are not supported in formatted text and will be ignored. Default value: "".
read / write
textFieldExpression ↔ List<Object>?
Value to use for a text label. If a plain string is provided, it will be treated as a formatted with default/inherited formatting options. SDF images are not supported in formatted text and will be ignored. Default value: "".
read / write
textFont ↔ List<String?>?
Font stack to use for displaying text.
read / write
textFontExpression ↔ List<Object>?
Font stack to use for displaying text.
read / write
textHaloBlur ↔ double?
The halo's fadeout distance towards the outside. Default value: 0. Minimum value: 0.
read / write
textHaloBlurExpression ↔ List<Object>?
The halo's fadeout distance towards the outside. Default value: 0. Minimum value: 0.
read / write
textHaloColor ↔ int?
The color of the text's halo, which helps it stand out from backgrounds. Default value: "rgba(0, 0, 0, 0)".
read / write
textHaloColorExpression ↔ List<Object>?
The color of the text's halo, which helps it stand out from backgrounds. Default value: "rgba(0, 0, 0, 0)".
read / write
textHaloWidth ↔ double?
Distance of halo to the font outline. Max text halo width is 1/4 of the font-size. Default value: 0. Minimum value: 0.
read / write
textHaloWidthExpression ↔ List<Object>?
Distance of halo to the font outline. Max text halo width is 1/4 of the font-size. Default value: 0. Minimum value: 0.
read / write
textIgnorePlacement ↔ bool?
If true, other symbols can be visible even if they collide with the text. Default value: false.
read / write
textIgnorePlacementExpression ↔ List<Object>?
If true, other symbols can be visible even if they collide with the text. Default value: false.
read / write
textJustify ↔ TextJustify?
Text justification options. Default value: "center".
read / write
textJustifyExpression ↔ List<Object>?
Text justification options. Default value: "center".
read / write
textKeepUpright ↔ bool?
If true, the text may be flipped vertically to prevent it from being rendered upside-down. Default value: true.
read / write
textKeepUprightExpression ↔ List<Object>?
If true, the text may be flipped vertically to prevent it from being rendered upside-down. Default value: true.
read / write
textLetterSpacing ↔ double?
Text tracking amount. Default value: 0.
read / write
textLetterSpacingExpression ↔ List<Object>?
Text tracking amount. Default value: 0.
read / write
textLineHeight ↔ double?
Text leading value for multi-line text. Default value: 1.2.
read / write
textLineHeightExpression ↔ List<Object>?
Text leading value for multi-line text. Default value: 1.2.
read / write
textMaxAngle ↔ double?
Maximum angle change between adjacent characters. Default value: 45.
read / write
textMaxAngleExpression ↔ List<Object>?
Maximum angle change between adjacent characters. Default value: 45.
read / write
textMaxWidth ↔ double?
The maximum line width for text wrapping. Default value: 10. Minimum value: 0.
read / write
textMaxWidthExpression ↔ List<Object>?
The maximum line width for text wrapping. Default value: 10. Minimum value: 0.
read / write
textOcclusionOpacity ↔ double?
The opacity at which the text will be drawn in case of being depth occluded. Not supported on globe zoom levels. Default value: 1. Value range: 0, 1
read / write
textOcclusionOpacityExpression ↔ List<Object>?
The opacity at which the text will be drawn in case of being depth occluded. Not supported on globe zoom levels. Default value: 1. Value range: 0, 1
read / write
textOffset ↔ List<double?>?
Offset distance of text from its anchor. Positive values indicate right and down, while negative values indicate left and up. If used with text-variable-anchor, input values will be taken as absolute values. Offsets along the x- and y-axis will be applied automatically based on the anchor position. Default value: 0,0.
read / write
textOffsetExpression ↔ List<Object>?
Offset distance of text from its anchor. Positive values indicate right and down, while negative values indicate left and up. If used with text-variable-anchor, input values will be taken as absolute values. Offsets along the x- and y-axis will be applied automatically based on the anchor position. Default value: 0,0.
read / write
textOpacity ↔ double?
The opacity at which the text will be drawn. Default value: 1. Value range: 0, 1
read / write
textOpacityExpression ↔ List<Object>?
The opacity at which the text will be drawn. Default value: 1. Value range: 0, 1
read / write
textOptional ↔ bool?
If true, icons will display without their corresponding text when the text collides with other symbols and the icon does not. Default value: false.
read / write
textOptionalExpression ↔ List<Object>?
If true, icons will display without their corresponding text when the text collides with other symbols and the icon does not. Default value: false.
read / write
textPadding ↔ double?
Size of the additional area around the text bounding box used for detecting symbol collisions. Default value: 2. Minimum value: 0.
read / write
textPaddingExpression ↔ List<Object>?
Size of the additional area around the text bounding box used for detecting symbol collisions. Default value: 2. Minimum value: 0.
read / write
textPitchAlignment ↔ TextPitchAlignment?
Orientation of text when map is pitched. Default value: "auto".
read / write
textPitchAlignmentExpression ↔ List<Object>?
Orientation of text when map is pitched. Default value: "auto".
read / write
textRadialOffset ↔ double?
Radial offset of text, in the direction of the symbol's anchor. Useful in combination with text-variable-anchor, which defaults to using the two-dimensional text-offset if present. Default value: 0.
read / write
textRadialOffsetExpression ↔ List<Object>?
Radial offset of text, in the direction of the symbol's anchor. Useful in combination with text-variable-anchor, which defaults to using the two-dimensional text-offset if present. Default value: 0.
read / write
textRotate ↔ double?
Rotates the text clockwise. Default value: 0.
read / write
textRotateExpression ↔ List<Object>?
Rotates the text clockwise. Default value: 0.
read / write
textRotationAlignment ↔ TextRotationAlignment?
In combination with symbol-placement, determines the rotation behavior of the individual glyphs forming the text. Default value: "auto".
read / write
textRotationAlignmentExpression ↔ List<Object>?
In combination with symbol-placement, determines the rotation behavior of the individual glyphs forming the text. Default value: "auto".
read / write
textSize ↔ double?
Font size. Default value: 16. Minimum value: 0.
read / write
textSizeExpression ↔ List<Object>?
Font size. Default value: 16. Minimum value: 0.
read / write
textTransform ↔ TextTransform?
Specifies how to capitalize text, similar to the CSS text-transform property. Default value: "none".
read / write
textTransformExpression ↔ List<Object>?
Specifies how to capitalize text, similar to the CSS text-transform property. Default value: "none".
read / write
textTranslate ↔ List<double?>?
Distance that the text's anchor is moved from its original placement. Positive values indicate right and down, while negative values indicate left and up. Default value: 0,0.
read / write
textTranslateAnchor ↔ TextTranslateAnchor?
Controls the frame of reference for text-translate. Default value: "map".
read / write
textTranslateAnchorExpression ↔ List<Object>?
Controls the frame of reference for text-translate. Default value: "map".
read / write
textTranslateExpression ↔ List<Object>?
Distance that the text's anchor is moved from its original placement. Positive values indicate right and down, while negative values indicate left and up. Default value: 0,0.
read / write
textVariableAnchor ↔ List<String?>?
To increase the chance of placing high-priority labels on the map, you can provide an array of text-anchor locations: the renderer will attempt to place the label at each location, in order, before moving onto the next label. Use text-justify: auto to choose justification based on anchor position. To apply an offset, use the text-radial-offset or the two-dimensional text-offset.
read / write
textVariableAnchorExpression ↔ List<Object>?
To increase the chance of placing high-priority labels on the map, you can provide an array of text-anchor locations: the renderer will attempt to place the label at each location, in order, before moving onto the next label. Use text-justify: auto to choose justification based on anchor position. To apply an offset, use the text-radial-offset or the two-dimensional text-offset.
read / write
textWritingMode ↔ List<String?>?
The property allows control over a symbol's orientation. Note that the property values act as a hint, so that a symbol whose language doesn’t support the provided orientation will be laid out in its natural orientation. Example: English point symbol will be rendered horizontally even if array value contains single 'vertical' enum value. For symbol with point placement, the order of elements in an array define priority order for the placement of an orientation variant. For symbol with line placement, the default text writing mode is either 'horizontal', 'vertical' or 'vertical', 'horizontal', the order doesn't affect the placement.
read / write
textWritingModeExpression ↔ List<Object>?
The property allows control over a symbol's orientation. Note that the property values act as a hint, so that a symbol whose language doesn’t support the provided orientation will be laid out in its natural orientation. Example: English point symbol will be rendered horizontally even if array value contains single 'vertical' enum value. For symbol with point placement, the order of elements in an array define priority order for the placement of an orientation variant. For symbol with line placement, the default text writing mode is either 'horizontal', 'vertical' or 'vertical', 'horizontal', the order doesn't affect the placement.
read / write
visibility ↔ Visibility?
The visibility of the layer.
read / writeinherited
visibilityExpression ↔ List<Object>?
The visibility of the layer.
read / writeinherited

Methods

getType() → String
Get the type of current layer as a String.
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited

Static Methods

decode(String properties) → SymbolLayer