Package org.geotools.renderer.lite

Class SynchronizedLabelCache

Object
SynchronizedLabelCache
All Implemented Interfaces:
LabelCache
public class SynchronizedLabelCache extends Object implements LabelCache
Allow multiple thread to modify LabelCache.
Author:
Jesse

  • Constructor Details

    • SynchronizedLabelCache

      public SynchronizedLabelCache()

    • SynchronizedLabelCache

      public SynchronizedLabelCache(LabelCache cache)

  • Method Details

    • start

      public void start()
      Description copied from interface: LabelCache
      Called by renderer to indicate that the rendering process is starting.
      Specified by:
      start in interface LabelCache

    • clear

      public void clear()
      Description copied from interface: LabelCache
      Clears the cache completely
      Specified by:
      clear in interface LabelCache

    • clear

      public void clear(String layerId)
      Description copied from interface: LabelCache
      Clears the cache of all information relating to the layer identified.
      Specified by:
      clear in interface LabelCache
      Parameters:
      layerId - id of the layer

    • enableLayer

      public void enableLayer(String layerId)
      Description copied from interface: LabelCache
      Enable a layer after being disabled. If startLayer is called this does not need to be called as start layer implicitely activates the layer.
      Specified by:
      enableLayer in interface LabelCache
      Parameters:
      layerId - layer to activate.

    • end

      public void end(Graphics2D graphics, Rectangle displayArea)
      Description copied from interface: LabelCache
      Called to indicate that the map is done rendering. The method may draw labels if appropriate for the labeling algorithm
      Specified by:
      end in interface LabelCache
      Parameters:
      graphics - the graphics to draw on.
      displayArea - The size of the display area.

    • endLayer

      public void endLayer(String layerId, Graphics2D graphics, Rectangle displayArea)
      Description copied from interface: LabelCache
      Called to indicate that a layer is done rendering. The method may draw labels if appropriate for the labeling algorithm
      Specified by:
      endLayer in interface LabelCache
      Parameters:
      layerId - an id for the layer
      graphics - the graphics to draw on.
      displayArea - The size of the display area

    • put

      public void put(String layerId, TextSymbolizer symbolizer, Feature feature, LiteShape2 shape, NumberRange<Double> scaleRange)
      Description copied from interface: LabelCache
      Puts a Label in the cache.
      Specified by:
      put in interface LabelCache
      Parameters:
      layerId - id indicating the layer the feature is part of
      symbolizer - The symbolizer containing the style information
      feature - the feature that has the information required for the symbolizer to calculate the required render information.
      shape - the shape to be labeled. This is in screen coordinates.
      scaleRange - the scaleRange that the symbolizer is legal

    • put

      public void put(Rectangle2D area)
      Description copied from interface: LabelCache
      Reserve the provided geometry prior to sorting out where labels can go.

      This facility is used to reserve an area so that labels do not end up overlapping on screen constructs like scalebars or north arrows etc...

      Specified by:
      put in interface LabelCache
      Parameters:
      area - The Area of the screen to reserve (in screen coordinates)

    • startLayer

      public void startLayer(String layerId)
      Description copied from interface: LabelCache
      Called by renderer to indication the start of rendering a layer. Will add the layer to the set of active layers.
      Specified by:
      startLayer in interface LabelCache
      Parameters:
      layerId - an id for the layer

    • stop

      public void stop()
      Description copied from interface: LabelCache
      Tells the cache to stop labelling.
      Specified by:
      stop in interface LabelCache

    • disableLayer

      public void disableLayer(String layerId)
      Description copied from interface: LabelCache
      Leaves the label information in the cache but ignores it when calculating what labels are drawn.
      Specified by:
      disableLayer in interface LabelCache
      Parameters:
      layerId - id of the layer to disable.

    • orderedLabels

      public List orderedLabels()
      Description copied from interface: LabelCache
      Return a list with all the values in priority order. Both grouped and non-grouped
      Specified by:
      orderedLabels in interface LabelCache
      Returns:
      list with all values in priority order