Package org.jCharts.chartText

Class TextTagGroup

java.lang.Object
org.jCharts.chartText.TextTagGroup
All Implemented Interfaces:
Serializable, HTMLTestable
Direct Known Subclasses:
NumericTagGroup
public class TextTagGroup extends Object implements HTMLTestable, Serializable
See Also:

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    private ChartFont
    chartFont
     
    private FontRenderContext
    fontRenderContext
     
    private float
    tallestLabel
     
    private ArrayList
    textTags
     
    private float
    totalLabelWidths
     
    private float
    widestLabel
     

  • Constructor Summary

    Constructors
    Constructor
    Description
    TextTagGroup(ChartFont chartFont, FontRenderContext fontRenderContext)
    Constructor

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    addLabel(String label)
     
    float
    getTallestLabel()
     
    TextTag
    getTextTag(int index)
     
    float
    getTotalLabelWidths()
     
    float
    getWidestLabel()
    Calculates the width and height needed by the passed String when rendered // * @param iDataSeries / * @param font // * @param fontRenderContext public void processLabels( IDataSeries iDataSeries) { //LOOP for( int i = 0; i < iDataSeries.getNumberOfXAxisLabels(); i++ ) { this.axisLabelProcessor.processLabel( iDataSeries.getXAxisLabel( i ), axisLabelFont, fontRenderContext ); } TextLayout textLayout = new TextLayout( label, font, fontRenderContext ); //---WIDTH this.labelWidths[ counter ] = textLayout.getAdvance(); this.widestLabel = Math.max( this.labelWidths[ counter ], this.widestLabel ); this.totalLabelWidths += this.labelWidths[ counter ]; //---HEIGHT this.labelHeights[ counter ] = textLayout.getAscent() + textLayout.getDescent(); this.tallestLabel = Math.max( this.labelHeights[ counter ], this.tallestLabel ); //---need this to offset font rendering, as rendering is at the baseline not bottom or top, this.fontDescent = textLayout.getDescent(); this.counter++; } /******************************************************************************************
    void
    render(int index, Graphics2D g2d, float x, float y)
    Renders the text, at the position - renders from the top (instead of baseline)
    void
    reverse()
    Horizontal plots render the data from top down so rendering alogorithm needs to get the labels in reverse order to make things easier.
    int
    size()
    Returns the number of labels
    void
    toHTML(HTMLGenerator htmlGenerator)
    Renders all the text in this group.

    Methods inherited from class java.lang.Object

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

  • Field Details

    • widestLabel

      private float widestLabel

    • tallestLabel

      private float tallestLabel

    • totalLabelWidths

      private float totalLabelWidths

    • textTags

      private ArrayList textTags

    • chartFont

      private ChartFont chartFont

    • fontRenderContext

      private FontRenderContext fontRenderContext

  • Constructor Details

    • TextTagGroup

      public TextTagGroup(ChartFont chartFont, FontRenderContext fontRenderContext)
      Constructor
      Parameters:
      chartFont -
      fontRenderContext -

  • Method Details

    • addLabel

      public void addLabel(String label)
      Parameters:
      label -

    • size

      public int size()
      Returns the number of labels
      Returns:
      int

    • reverse

      public void reverse()
      Horizontal plots render the data from top down so rendering alogorithm needs to get the labels in reverse order to make things easier.

    • getWidestLabel

      public float getWidestLabel()
      Calculates the width and height needed by the passed String when rendered // * @param iDataSeries / * @param font // * @param fontRenderContext public void processLabels( IDataSeries iDataSeries) { //LOOP for( int i = 0; i < iDataSeries.getNumberOfXAxisLabels(); i++ ) { this.axisLabelProcessor.processLabel( iDataSeries.getXAxisLabel( i ), axisLabelFont, fontRenderContext ); } TextLayout textLayout = new TextLayout( label, font, fontRenderContext ); //---WIDTH this.labelWidths[ counter ] = textLayout.getAdvance(); this.widestLabel = Math.max( this.labelWidths[ counter ], this.widestLabel ); this.totalLabelWidths += this.labelWidths[ counter ]; //---HEIGHT this.labelHeights[ counter ] = textLayout.getAscent() + textLayout.getDescent(); this.tallestLabel = Math.max( this.labelHeights[ counter ], this.tallestLabel ); //---need this to offset font rendering, as rendering is at the baseline not bottom or top, this.fontDescent = textLayout.getDescent(); this.counter++; } /******************************************************************************************

    • getTallestLabel

      public float getTallestLabel()

    • getTotalLabelWidths

      public float getTotalLabelWidths()

    • getTextTag

      public TextTag getTextTag(int index)
      Parameters:
      index -
      Returns:
      TextTag

    • render

      public void render(int index, Graphics2D g2d, float x, float y)
      Renders the text, at the position - renders from the top (instead of baseline)
      Parameters:
      index -
      g2d -
      x -
      y -

    • toHTML

      public void toHTML(HTMLGenerator htmlGenerator)
      Renders all the text in this group. public void renderTag( int index, Graphics2D g2d ) { TextTag tag; //Paint p = this.fontColor; g2d.setPaint( this. ); //g2d.setFont( (this.derivedFont == null) ? baseFont : derivedFont ); for( int i = 0; i < group.size(); i++ ) { tag = ( TextTag ) group.get( i ); tag.render( g2d, p ); // Text tag sets the Paint every time if not null // So, we might save a small bit of time by changing // this to null after first time. p = null; } } /********************************************************************************************* Enables the testing routines to display the contents of this Object.
      Specified by:
      toHTML in interface HTMLTestable
      Parameters:
      htmlGenerator -