Field Detail

• graphics2D

  private java.awt.Graphics2D graphics2D

• width

  private int width

• height

  private int height

• legend

  private Legend legend

• chartProperties

  private ChartProperties chartProperties

• generateImageMap

  private boolean generateImageMap

• imageMap

  private ImageMap imageMap

• bufferedImage

  private java.awt.image.BufferedImage bufferedImage

Constructor Detail

• Chart

  public Chart​(LegendProperties legendProperties,
               ChartProperties chartProperties,
               int pixelWidth,
               int pixelHeight)

  Constructor

  Parameters:

  legendProperties -

  chartProperties -

  pixelWidth -

  pixelHeight -

Method Detail

• getGenerateImageMapFlag

  public boolean getGenerateImageMapFlag()

  Returns flag indicating whether to generate an ImageMap

  Returns:

  boolean

• getBufferedImage

  public java.awt.image.BufferedImage getBufferedImage()

  Returns the BufferedImage used to generate the ImageMap. Only should be called on binary format images, such as PNG and JPG, as it will not work on SVG. This is a HACK and the design of jCharts should do better than this!!!!!!

  Returns:

  BufferedImage

• renderWithImageMap

  public void renderWithImageMap()
                          throws ChartDataException,
                                 PropertyException

  Renders the chart into a BufferedImage so that we can calculate all the Image Map coordinates.

  Throws:

  ChartDataException

  PropertyException

• render

  public void render()
              throws ChartDataException,
                     PropertyException

  Call this to kick off rendering of the chart

  Throws:

  ChartDataException

  PropertyException

• renderChartTitle

  protected float renderChartTitle​(java.lang.String chartTitle,
                                   java.awt.font.FontRenderContext fontRenderContext)

  Displays the chart title and returns the height of the title PLUS title padding.

  Parameters:

  chartTitle -

  fontRenderContext -

  Returns:

  float the height required by the title. If no title is displayed, zero is returned.

• renderChart

  protected abstract void renderChart()
                               throws ChartDataException,
                                      PropertyException

  Throws:

  ChartDataException

  PropertyException

• getImageWidth

  public final int getImageWidth()

  Returns the BufferedImage width

  Returns:

  int

• getImageHeight

  public final int getImageHeight()

  Returns the BufferedImage height

  Returns:

  int

• getChartProperties

  public final ChartProperties getChartProperties()

  Returns the general properties Object.

  Returns:

  ChartProperties

• getLegend

  protected final Legend getLegend()

  Returns the Legend. Will be NULL if no Legend is desired.

  Returns:

  Legend

• hasLegend

  public final boolean hasLegend()

  Returns flag indicating if there is a Legend.

  Returns:

  boolean

• setGraphics2D

  public final void setGraphics2D​(java.awt.Graphics2D graphics2D)

  Sets the graphics object to render the chart on by the encoder.

  Parameters:

  graphics2D -

• getGraphics2D

  public final java.awt.Graphics2D getGraphics2D()

  Shortcut method to get Graphics2D. Be aware that the call BufferedImage.getGraphics() and BufferedImage.createGraphics(), actually create a new Grpahics2D Object on each invocation. This returns the member reference so calls to this are not creating a new Object each time.

  Returns:

  Graphics2D

• setImageMap

  public final void setImageMap​(ImageMap imageMap)

  To optimze performance of the ImageMap Object, we create it once we know how many data elements are in the chart which is dependent on the AxisChart or PieChart2D

  Parameters:

  imageMap -

• getImageMap

  public final ImageMap getImageMap()

  Returns:

  imageMap

• toHTML

  public void toHTML​(HTMLGenerator htmlGenerator,
                     java.lang.String imageFileName,
                     ImageMap imageMap)

  Enables the testing routines to display the contents of this Object.

  Parameters:

  htmlGenerator -

  imageFileName -

  imageMap - if this is NULL we are not creating image map data in html