org.epics.graphene

Class LineGraph2DRenderer

java.lang.Object

org.epics.graphene.Graph2DRenderer<LineGraph2DRendererUpdate>

org.epics.graphene.LineGraph2DRenderer

public class LineGraph2DRenderer
extends Graph2DRenderer<LineGraph2DRendererUpdate>

Renderer for a line graph.

Author:

carcassi

Field Summary

Fields

Modifier and Type	Field and Description
static List<InterpolationScheme>	supportedInterpolationScheme
static List<ReductionScheme>	supportedReductionScheme

Fields inherited from class org.epics.graphene.Graph2DRenderer

backgroundColor, bottomAreaMargin, bottomMargin, g, labelColor, labelFont, labelFontMetrics, leftAreaMargin, leftMargin, referenceLineColor, rightAreaMargin, rightMargin, topAreaMargin, topMargin, xAreaEnd, xAreaStart, xLabelMargin, xPlotCoordEnd, xPlotCoordStart, xPlotCoordWidth, xPlotValueEnd, xPlotValueStart, xReferenceCoords, xReferenceLabels, xReferenceValues, yAreaEnd, yAreaStart, yLabelMargin, yPlotCoordEnd, yPlotCoordHeight, yPlotCoordStart, yPlotValueEnd, yPlotValueStart, yReferenceCoords, yReferenceLabels, yReferenceValues

Constructor Summary

Constructors

Constructor and Description
LineGraph2DRenderer(int imageWidth, int imageHeight) Creates a new line graph renderer.

Method Summary

Methods

Modifier and Type	Method and Description
void	draw(Graphics2D g, Point2DDataset data) Draws the graph on the given graphics context.
Integer	getFocusPixelX()
int	getFocusValueIndex()
InterpolationScheme	getInterpolation() The current interpolation used for the line.
boolean	isHighlightFocusValue()
LineGraph2DRendererUpdate	newUpdate() Creates a new update for the given graph.
protected void	processScaledValue(int index, double valueX, double valueY, double scaledX, double scaledY)
void	update(LineGraph2DRendererUpdate update) Applies the update to the renderer.

Methods inherited from class org.epics.graphene.Graph2DRenderer

calculateGraphArea, calculateRanges, drawBackground, drawGraphArea, drawHorizontalReferenceLines, drawValueExplicitLine, drawValueLine, drawVerticalReferenceLines, drawXLabels, drawYLabels, getImageHeight, getImageWidth, getXAggregatedRange, getXAxisRange, getXPlotRange, getYAggregatedRange, getYAxisRange, getYPlotRange, scaledX, scaledY, setClip

Methods inherited from class java.lang.Object

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

Field Detail

supportedInterpolationScheme

public static List<InterpolationScheme> supportedInterpolationScheme

supportedReductionScheme

public static List<ReductionScheme> supportedReductionScheme

Constructor Detail

LineGraph2DRenderer

public LineGraph2DRenderer(int imageWidth,
                   int imageHeight)

Creates a new line graph renderer.

Parameters:

imageWidth - the graph width

imageHeight - the graph height

Method Detail

newUpdate

public LineGraph2DRendererUpdate newUpdate()

Description copied from class: Graph2DRenderer

Creates a new update for the given graph.

Specified by:

newUpdate in class Graph2DRenderer<LineGraph2DRendererUpdate>

Returns:

a new update object

getInterpolation

public InterpolationScheme getInterpolation()

The current interpolation used for the line.

Returns:

the current interpolation

isHighlightFocusValue

public boolean isHighlightFocusValue()

getFocusValueIndex

public int getFocusValueIndex()

getFocusPixelX

public Integer getFocusPixelX()

update

public void update(LineGraph2DRendererUpdate update)

Description copied from class: Graph2DRenderer

Applies the update to the renderer.

When sub-classing, one should re-implement this method by first calling it and then applying all the updates specific to the sub-class.

Overrides:

update in class Graph2DRenderer<LineGraph2DRendererUpdate>

Parameters:

update - the update to apply

draw

public void draw(Graphics2D g,
        Point2DDataset data)

Draws the graph on the given graphics context.

Parameters:

g - the graphics on which to display the data

data - the data to display

processScaledValue

protected void processScaledValue(int index,
                      double valueX,
                      double valueY,
                      double scaledX,
                      double scaledY)

Overrides:

processScaledValue in class Graph2DRenderer<LineGraph2DRendererUpdate>