org.pentaho.platform.uifoundation.chart
Class JFreeChartEngine

java.lang.Object
  org.pentaho.platform.uifoundation.chart.JFreeChartEngine

public class JFreeChartEngine
extends Object

Field Summary

static int	AREA_CHART_TYPE
static int	BAR_CHART_TYPE
static int	BAR_LINE_CHART_TYPE
static int	BUBBLE_CHART_TYPE
static int	DIAL_CHART_TYPE
static int	DIFFERENCE_CHART_TYPE
static int	DOT_CHART_TYPE
static int	LINE_CHART_TYPE
static int	OUTPUT_CHART
static int	OUTPUT_PNG
static int	OUTPUT_PNG_BYTES
static int	OUTPUT_SVG
static int	PIE_CHART_TYPE
static int	PIE_GRID_CHART_TYPE
static int	STEP_AREA_CHART_TYPE
static int	STEP_CHART_TYPE
static int	THERMOMETER_CHART_TYPE
static int	UNDEFINED_CHART_TYPE

Constructor Summary

JFreeChartEngine()

Method Summary

static JFreeChart	getChart(Dataset dataset, String title, String units, int width, int height, ILogger logger) Create a chart-object using dataset object.
static int	getChartType(String typeStr)
static String	getChartTypeName(int type)
static Color	getColor(String htmlColor) Creates a java.awt.Color object from an HTML color definition, eg #80dd3f
static Font	getFont(Node fontNode) Creates a java.awt.TexturePaint object from an XML node from the dial definition document
static Paint	getGradientPaint(Node gradientNode, int width, int height)
static Image	getImage(Node chartBackgroundImageNode, IPentahoSession session)
static Stroke	getLineStyleStroke(String lineStyle, float lineWidth)
static Paint	getPaint(Node node) Creates a java.awt.Paint object from an XML node from the dial definition document
static Paint	getPaint(Node node, int width, int height, IPentahoSession session) Creates a java.awt.Paint object from an XML node from the dial definition document
static Paint	getTexturePaint(Node textureNode, int width, int height, IPentahoSession session)
static Color	getTransparent()
static boolean	isBarColumn(String[] barColumns, String columnName)
static boolean	isLineColumn(String[] lineColumns, String columnName)
static void	saveChart(Dataset dataset, String title, String units, String fileName, int width, int height, int outputType, PrintWriter writer, ChartRenderingInfo info, ILogger logger) Create an image file using dataset object.
static void	saveChart(Dataset dataset, String title, String units, String fileName, int width, int height, int outputType, PrintWriter writer, ILogger logger) Create an image file using dataset object.

Methods inherited from class java.lang.Object

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

Field Detail

OUTPUT_CHART

public static final int OUTPUT_CHART

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Constant Field Values

OUTPUT_PNG

public static final int OUTPUT_PNG

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Constant Field Values

OUTPUT_SVG

public static final int OUTPUT_SVG

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OUTPUT_PNG_BYTES

public static final int OUTPUT_PNG_BYTES

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Constant Field Values

UNDEFINED_CHART_TYPE

public static final int UNDEFINED_CHART_TYPE

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Constant Field Values

DIAL_CHART_TYPE

public static final int DIAL_CHART_TYPE

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Constant Field Values

THERMOMETER_CHART_TYPE

public static final int THERMOMETER_CHART_TYPE

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Constant Field Values

PIE_CHART_TYPE

public static final int PIE_CHART_TYPE

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Constant Field Values

PIE_GRID_CHART_TYPE

public static final int PIE_GRID_CHART_TYPE

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Constant Field Values

BAR_CHART_TYPE

public static final int BAR_CHART_TYPE

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LINE_CHART_TYPE

public static final int LINE_CHART_TYPE

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Constant Field Values

AREA_CHART_TYPE

public static final int AREA_CHART_TYPE

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STEP_CHART_TYPE

public static final int STEP_CHART_TYPE

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STEP_AREA_CHART_TYPE

public static final int STEP_AREA_CHART_TYPE

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DIFFERENCE_CHART_TYPE

public static final int DIFFERENCE_CHART_TYPE

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DOT_CHART_TYPE

public static final int DOT_CHART_TYPE

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BAR_LINE_CHART_TYPE

public static final int BAR_LINE_CHART_TYPE

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BUBBLE_CHART_TYPE

public static final int BUBBLE_CHART_TYPE

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Constant Field Values

Constructor Detail

JFreeChartEngine

public JFreeChartEngine()

Method Detail

saveChart

public static void saveChart(Dataset dataset,
                             String title,
                             String units,
                             String fileName,
                             int width,
                             int height,
                             int outputType,
                             PrintWriter writer,
                             ILogger logger)

Create an image file using dataset object. This method takes a dataset object, e.g. a DialWidgetDefinition, creates a JFreeChart object from it, and then creates an image file.

Parameters:

dataset - The

title - The title of the chart

units - The units of the chart value

fileName - The path and file of the image to create

width - The width of the image to create

height - The height of the image to create

outputType - The type of the image to create

writer - A writer to writer the image map into

logger - The logger to log any messages to

saveChart

public static void saveChart(Dataset dataset,
                             String title,
                             String units,
                             String fileName,
                             int width,
                             int height,
                             int outputType,
                             PrintWriter writer,
                             ChartRenderingInfo info,
                             ILogger logger)

Create an image file using dataset object. This method takes a dataset object, e.g. a DialWidgetDefinition, creates a JFreeChart object from it, and then creates an image file.

Parameters:

dataset - The

title - The title of the chart

units - The units of the chart value

fileName - The path and file of the image to create

width - The width of the image to create

height - The height of the image to create

outputType - The type of the image to create

writer - A writer to writer the image map into

logger - The logger to log any messages to

getChart

public static JFreeChart getChart(Dataset dataset,
                                  String title,
                                  String units,
                                  int width,
                                  int height,
                                  ILogger logger)

Create a chart-object using dataset object. This method takes a dataset object, e.g. a DialWidgetDefinition, and creates and returns a JFreeChart object from it.

Parameters:

dataset - The dataset

title - The title of the chart

units - The units of the chart value

width - The width of the image to create

height - The height of the image to create

logger - The logger to log any messages to

Returns:

JFreeChart the generated chart object

getChartType

public static int getChartType(String typeStr)

Parameters:

typeStr - String name for chart

Returns:

int representing the chart string passed in; -1 if invalid chart name

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for valid chart name strings and integers

getChartTypeName

public static String getChartTypeName(int type)

Parameters:

type - int type for chart

Returns:

String representing the chart

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for valid chart name strings

getColor

public static Color getColor(String htmlColor)

Creates a java.awt.Color object from an HTML color definition, eg #80dd3f

Parameters:

htmlColor - The color string

Returns:

A Color object

getTransparent

public static Color getTransparent()

getPaint

public static Paint getPaint(Node node,
                             int width,
                             int height,
                             IPentahoSession session)

Creates a java.awt.Paint object from an XML node from the dial definition document

Parameters:

width - of the chart

height - of the chart

node - XML Node from the dial definition

Returns:

Paint object defined by the node

getFont

public static Font getFont(Node fontNode)

Creates a java.awt.TexturePaint object from an XML node from the dial definition document

Parameters:

XML - Node from the dial definition

width - of the chart

height - of the chart

Returns:

Paint object defined by the node / public static Paint getTexturePaint( Node node, int width, int height ) { if( node == null ) { return null; } int rectWidth=width; int rectHeight=height; int x=0; int y=0; // Get Image try{ Node imageNode = node.selectSingleNode( "background-image" ); //$NON-NLS-1$ if( imageNode != null ) { String imageName = imageNode.getText().toString(); String fileName = PentahoSystem.getApplicationContext().getSolutionPath( imageName ); int offset = fileName.lastIndexOf( "." ); //$NON-NLS-1$ String type = offset == -1 ? "jpg" : fileName.substring(offset + 1); //$NON-NLS-1$ BufferedImage image = new BufferedImage( width, height, BufferedImage.TYPE_INT_ARGB); ImageIO.write(image, type, new File( fileName )); Node rectangle= node.selectSingleNode("rectangle"); //$NON-NLS-1$ if( rectangle != null ) { Node tmpNode = rectangle.selectSingleNode("width"); //$NON-NLS-1$ if( tmpNode != null ) { rectWidth=Integer.parseInt(tmpNode.getText().toString().trim()); //$NON-NLS-1$ } tmpNode = rectangle.selectSingleNode("height"); //$NON-NLS-1$ if( tmpNode != null ) { rectHeight=Integer.parseInt(tmpNode.getText().toString().trim()); //$NON-NLS-1$ } tmpNode = rectangle.selectSingleNode("x"); //$NON-NLS-1$ if( tmpNode != null ) { x=Integer.parseInt(tmpNode.getText().toString().trim()); //$NON-NLS-1$ } tmpNode = rectangle.selectSingleNode("y"); //$NON-NLS-1$ if( tmpNode != null ) { y=Integer.parseInt(tmpNode.getText().toString().trim()); //$NON-NLS-1$ } } Rectangle2D rect = new Rectangle2D.Double(x,y,rectWidth,rectHeight); return new TexturePaint(image,rect); } }catch(Exception e){e.printStackTrace();} return null; }

getPaint

public static Paint getPaint(Node node)

Creates a java.awt.Paint object from an XML node from the dial definition document

Parameters:

node - XML Node from the chart definition

Returns:

Paint object defined by the node

getGradientPaint

public static Paint getGradientPaint(Node gradientNode,
                                     int width,
                                     int height)

Parameters:

gradientNode - root node that hold gradient information

Returns:

a gradientPaint implementation of Paint

getTexturePaint

public static Paint getTexturePaint(Node textureNode,
                                    int width,
                                    int height,
                                    IPentahoSession session)

Parameters:

textureNode - root node that holds texture information

Returns:

getLineStyleStroke

public static Stroke getLineStyleStroke(String lineStyle,
                                        float lineWidth)

getImage

public static Image getImage(Node chartBackgroundImageNode,
                             IPentahoSession session)

Parameters:

chartBackgroundImageNode - - Node that contains a path to the images in its text element

Returns:

the image

isBarColumn

public static boolean isBarColumn(String[] barColumns,
                                  String columnName)

isLineColumn

public static boolean isLineColumn(String[] lineColumns,
                                   String columnName)