Package org.eclipse.nebula.visualization.widgets.datadefinition

Class ColorMap

java.lang.Object
org.eclipse.nebula.visualization.widgets.datadefinition.ColorMap
public class ColorMap
extends java.lang.Object
Color Map data type.

  • Nested Class Summary

    Nested Classes 
    Modifier and Type Class Description
    static class  ColorMap.PredefinedColorMap  

  • Constructor Summary

    Constructors 
    Constructor Description
    ColorMap()  
    ColorMap​(ColorMap.PredefinedColorMap predefinedColorMap, boolean autoScale, boolean interpolate)  

  • Method Summary

    Modifier and Type Method Description
    org.eclipse.swt.graphics.ImageData drawImage​(double[] dataArray, int dataWidth, int dataHeight, double max, double min)
    Calculate the image data from source data based on the color map.
    org.eclipse.swt.graphics.ImageData drawImage​(IPrimaryArrayWrapper dataArray, int dataWidth, int dataHeight, double max, double min, org.eclipse.swt.graphics.ImageData imageData, boolean shrink)
    Calculate the image data from source data based on the color map.
    org.eclipse.swt.graphics.RGB[] getColorsLookupTable()
    Get a colors lookup table from 0 to 255.
    java.util.LinkedHashMap<java.lang.Double,​org.eclipse.swt.graphics.RGB> getMap()  
    org.eclipse.swt.graphics.PaletteData getPalette()  
    ColorMap.PredefinedColorMap getPredefinedColorMap()  
    org.eclipse.swt.graphics.RGB getValueRGB​(ColorTuple[] colorTupleArray, double[] keyArray, double value)  
    boolean isAutoScale()  
    boolean isInterpolate()  
    void setAutoScale​(boolean autoScale)  
    void setColorMap​(java.util.LinkedHashMap<java.lang.Double,​org.eclipse.swt.graphics.RGB> colorMap)
    Set a new map.
    void setInterpolate​(boolean interpolate)  
    void setPredefinedColorMap​(ColorMap.PredefinedColorMap predefinedColorMap)  
    java.lang.String toString()  

    Methods inherited from class java.lang.Object

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

  • Constructor Details

  • Method Details

    • getMap

      public java.util.LinkedHashMap<java.lang.Double,​org.eclipse.swt.graphics.RGB> getMap()
      Returns:
      the map which back up the ColorMap

    • setColorMap

      public void setColorMap​(java.util.LinkedHashMap<java.lang.Double,​org.eclipse.swt.graphics.RGB> colorMap)
      Set a new map.
      Parameters:
      colorMap - the new map.

    • setAutoScale

      public void setAutoScale​(boolean autoScale)
      Parameters:
      autoScale - the autoScale to set

    • isAutoScale

      public boolean isAutoScale()
      Returns:
      the autoScale

    • setInterpolate

      public void setInterpolate​(boolean interpolate)
      Parameters:
      interpolate - the interpolate to set

    • isInterpolate

      public boolean isInterpolate()
      Returns:
      the interpolate

    • setPredefinedColorMap

      public void setPredefinedColorMap​(ColorMap.PredefinedColorMap predefinedColorMap)
      Parameters:
      predefinedColorMap - the predefinedColorMap to set

    • getPredefinedColorMap

      public ColorMap.PredefinedColorMap getPredefinedColorMap()
      Returns:
      the predefinedColorMap

    • toString

      public java.lang.String toString()
      Overrides:
      toString in class java.lang.Object

    • drawImage

      public org.eclipse.swt.graphics.ImageData drawImage​(IPrimaryArrayWrapper dataArray, int dataWidth, int dataHeight, double max, double min, org.eclipse.swt.graphics.ImageData imageData, boolean shrink)
      Calculate the image data from source data based on the color map.
      Parameters:
      dataArray - the source data
      dataWidth - number of columns of dataArray; This will be the width of image data.
      dataHeight - number of rows of dataArray; This will be the height of image data.
      max - the upper limit of the data in dataArray
      min - the lower limit of the data in dataArray
      imageData - the imageData to be filled. null if a new instance should be created.
      shrink - true if area size of image data is smaller than dataWidth*dataHeight. If this is true, it will use the nearest neighbor iamge scaling algorithm as described at https://tech-algorithm.com/articles/nearest-neighbor-image-scaling/.
      Returns:
      the image data. null if dataWidth or dataHeight is less than 1.

    • drawImage

      public org.eclipse.swt.graphics.ImageData drawImage​(double[] dataArray, int dataWidth, int dataHeight, double max, double min)
      Calculate the image data from source data based on the color map.
      Parameters:
      dataArray - the source data
      dataWidth - number of columns of dataArray; This will be the width of image data.
      dataHeight - number of rows of dataArray; This will be the height of image data.
      max - the upper limit of the data in dataArray
      min - the lower limit of the data in dataArray
      imageData - the imageData to be filled. null if a new instance should be created.
      Returns:
      the image data. null if dataWidth or dataHeight is less than 1.

    • getValueRGB

      public org.eclipse.swt.graphics.RGB getValueRGB​(ColorTuple[] colorTupleArray, double[] keyArray, double value)
      Parameters:
      colorTupleArray -
      keyArray -
      value - the value which has been scaled or not based on the autoScale flag.
      min -
      max -
      Returns:

    • getColorsLookupTable

      public org.eclipse.swt.graphics.RGB[] getColorsLookupTable()
      Get a colors lookup table from 0 to 255. This only works for autoScale is true;
      Returns:
      the colorsLookupTable a array of 256 colors corresponding to the value from min to max

    • getPalette

      public org.eclipse.swt.graphics.PaletteData getPalette()