Module: ol/render/canvas

Members

module:ol/render/canvas.labelCache{module:ol/structs/LRUCache~LRUCache.<HTMLCanvasElement>}

The label cache for text rendering. To change the default cache size of 2048 entries, use module:ol/structs/LRUCache#setSize.

Type Definitions

DeclutterGroup{Array.<*>}

Container for decluttered replay instructions that need to be rendered or omitted together, i.e. when styles render both an image and text, or for the characters that form text along lines. The basic elements of this array are [minX, minY, maxX, maxY, count], where the first four entries are the rendered extent of the group in pixel space. count is the number of styles in the group, i.e. 2 when an image and a text are grouped, or 1 otherwise. In addition to these four elements, declutter instruction arrays (i.e. the arguments to module:ol/render/canvas~drawImage are appended to the array.

FillState{Object}

Properties:

Name	Type	Description
fillStyle	module:ol/colorlike~ColorLike

FillStrokeState{Object}

Properties:

Name	Type	Argument	Description
currentFillStyle	module:ol/colorlike~ColorLike	<optional>
currentStrokeStyle	module:ol/colorlike~ColorLike	<optional>
currentLineCap	string	<optional>
currentLineDash	Array.<number>
currentLineDashOffset	number	<optional>
currentLineJoin	string	<optional>
currentLineWidth	number	<optional>
currentMiterLimit	number	<optional>
lastStroke	number	<optional>
fillStyle	module:ol/colorlike~ColorLike	<optional>
strokeStyle	module:ol/colorlike~ColorLike	<optional>
lineCap	string	<optional>
lineDash	Array.<number>
lineDashOffset	number	<optional>
lineJoin	string	<optional>
lineWidth	number	<optional>
miterLimit	number	<optional>

StrokeState{Object}

Properties:

Name	Type	Description
lineCap	string
lineDash	Array.<number>
lineDashOffset	number
lineJoin	string
lineWidth	number
miterLimit	number
strokeStyle	module:ol/colorlike~ColorLike

TextState{Object}

Properties:

Name	Type	Argument	Description
font	string
textAlign	string	<optional>
textBaseline	string
placement	string	<optional>
maxAngle	number	<optional>
overflow	boolean	<optional>
backgroundFill	module:ol/style/Fill~Fill	<optional>
backgroundStroke	module:ol/style/Stroke~Stroke	<optional>
scale	number	<optional>
padding	Array.<number>	<optional>