org.rrd4j.graph

Class RrdGraph

java.lang.Object

org.rrd4j.graph.RrdGraph

All Implemented Interfaces:

RrdGraphConstants

public class RrdGraph
extends Object
implements RrdGraphConstants

Class which actually creates Rrd4j graphs (does the hard work).

Nested Class Summary

Nested classes/interfaces inherited from interface org.rrd4j.graph.RrdGraphConstants

RrdGraphConstants.FontConstructor, RrdGraphConstants.FontTag

Field Summary

Fields

Modifier and Type	Field and Description
(package private) RrdGraphDef	gdef
(package private) ImageParameters	im

Fields inherited from interface org.rrd4j.graph.RrdGraphConstants

ALIGN_CENTER_MARKER, ALIGN_JUSTIFIED_MARKER, ALIGN_LEFT_MARKER, ALIGN_LEFTNONL_MARKER, ALIGN_RIGHT_MARKER, BLIND_COLOR, COLOR_ARROW, COLOR_BACK, COLOR_CANVAS, COLOR_FONT, COLOR_FRAME, COLOR_GRID, COLOR_MGRID, COLOR_SHADEA, COLOR_SHADEB, COLOR_XAXIS, COLOR_YAXIS, DAY, DEFAULT_ARROW_COLOR, DEFAULT_BACK_COLOR, DEFAULT_BASE, DEFAULT_CANVAS_COLOR, DEFAULT_END, DEFAULT_FONT_COLOR, DEFAULT_FRAME_COLOR, DEFAULT_GRID_COLOR, DEFAULT_HEIGHT, DEFAULT_IMAGE_FORMAT, DEFAULT_IMAGE_QUALITY, DEFAULT_LARGE_FONT, DEFAULT_MGRID_COLOR, DEFAULT_SHADEA_COLOR, DEFAULT_SHADEB_COLOR, DEFAULT_SMALL_FONT, DEFAULT_START, DEFAULT_UNITS_LENGTH, DEFAULT_WIDTH, DEFAULT_XAXIS_COLOR, DEFAULT_YAXIS_COLOR, FIRST_DAY_OF_WEEK, FONTTAG_AXIS, FONTTAG_DEFAULT, FONTTAG_LEGEND, FONTTAG_TITLE, FONTTAG_UNIT, FONTTAG_WATERMARK, FRIDAY, GATOR_FONT, GLUE_MARKER, GRID_STROKE, HH_MM, HOUR, IN_MEMORY_IMAGE, LEGEND_BOX, LEGEND_BOX_SPACE, LEGEND_INTERSPACING, LEGEND_LEADING, LEGEND_LEADING_SMALL, MINUTE, MONDAY, MONTH, NO_JUSTIFICATION_MARKER, PADDING_BOTTOM, PADDING_LEFT, PADDING_LEGEND, PADDING_PLOT, PADDING_RIGHT, PADDING_TITLE, PADDING_TOP, PADDING_VLABEL, PROPERTYFONTBOLD, PROPERTYFONTBOLDURL, PROPERTYFONTPLAIN, PROPERTYFONTPLAINURL, PROPERTYFONTSPROPERTIES, PROPERTYFONTSURL, SATURDAY, SECOND, SUNDAY, THURSDAY, TICK_STROKE, TUESDAY, VERTICAL_SPACING_MARKER, WEDNESDAY, WEEK, YEAR

Constructor Summary

Constructors

Constructor and Description
RrdGraph(RrdGraphDef gdef) Creates graph from the corresponding RrdGraphDef object.
RrdGraph(RrdGraphDef gdef, ImageWorker worker) Create graph from a custom image worker
RrdGraph(RrdGraphDef gdef, ImageWriter writer, ImageWriteParam param) Creates graph from the corresponding RrdGraphDef object.

Method Summary

Modifier and Type	Method and Description
RrdGraphInfo	getRrdGraphInfo() Returns complete graph information in a single object.
void	render(Graphics g) Renders this graph onto graphing device

Methods inherited from class java.lang.Object

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

Field Detail

gdef

final RrdGraphDef gdef

im

final ImageParameters im

Constructor Detail

RrdGraph

public RrdGraph(RrdGraphDef gdef)
         throws IOException

Creates graph from the corresponding RrdGraphDef object.

Parameters:

gdef - Graph definition

Throws:

IOException - Thrown in case of I/O error

RrdGraph

public RrdGraph(RrdGraphDef gdef,
                ImageWorker worker)
         throws IOException

Create graph from a custom image worker

Parameters:

gdef -

worker -

Throws:

IOException

RrdGraph

public RrdGraph(RrdGraphDef gdef,
                ImageWriter writer,
                ImageWriteParam param)
         throws IOException

Creates graph from the corresponding RrdGraphDef object.

The graph will be created using customs ImageWriter and ImageWriteParam given.

The ImageWriter type and ImageWriteParam settings have priority other the RrdGraphDef settings.

Parameters:

gdef - Graph definition

writer -

param -

Throws:

IOException - Thrown in case of I/O error

Method Detail

getRrdGraphInfo

public RrdGraphInfo getRrdGraphInfo()

Returns complete graph information in a single object.

Returns:

Graph information (width, height, filename, image bytes, etc...)

render

public void render(Graphics g)

Renders this graph onto graphing device

Parameters:

g - Graphics handle