Package 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	Description
(package private) final RrdGraphDef	gdef
(package private) final ImageParameters	im
(package private) Mapper	mapper
(package private) ImageWorker	worker

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	Description
RrdGraph(RrdGraphDef gdef)	Creates graph from the corresponding RrdGraphDef object.
RrdGraph(RrdGraphDef gdef, ImageWriter writer, ImageWriteParam param)	Creates graph from the corresponding RrdGraphDef object.

Method Summary

Modifier and Type	Method	Description
(package private) double	getBoxSpace()
(package private) double	getFontCharWidth(RrdGraphConstants.FontTag fonttag)
(package private) double	getFontHeight(RrdGraphConstants.FontTag fonttag)
(package private) double	getInterlegendSpace()
(package private) double	getLeading()
RrdGraphInfo	getRrdGraphInfo()	Returns complete graph information in a single object.
(package private) double	getSmallFontHeight()	Deprecated.
(package private) double	getSmallLeading()
(package private) double	getTitleFontHeight()
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 Details

gdef

final RrdGraphDef gdef

im

final ImageParameters im

worker

ImageWorker worker

mapper

Mapper mapper

Constructor Details

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,
 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

Since:

3.5

Method Details

getRrdGraphInfo

public RrdGraphInfo getRrdGraphInfo()

Returns complete graph information in a single object.

Returns:

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

getFontHeight

double getFontHeight(RrdGraphConstants.FontTag fonttag)

getFontCharWidth

double getFontCharWidth(RrdGraphConstants.FontTag fonttag)

getSmallFontHeight

@Deprecated
double getSmallFontHeight()

Deprecated.

getTitleFontHeight

double getTitleFontHeight()

getInterlegendSpace

double getInterlegendSpace()

getLeading

double getLeading()

getSmallLeading

double getSmallLeading()

getBoxSpace

double getBoxSpace()

render

public void render(Graphics g)

Renders this graph onto graphing device

Parameters:

g - Graphics handle