com.codename1.charts.views

Class LineChart

java.lang.Object

com.codename1.charts.views.AbstractChart

com.codename1.charts.views.XYChart

com.codename1.charts.views.LineChart

Direct Known Subclasses:

CubicLineChart, TimeChart

public class LineChart
extends XYChart

The line chart rendering class.

Field Summary

Fields

Modifier and Type	Field and Description
static String	TYPE The constant to identify this chart type.

Fields inherited from class com.codename1.charts.views.XYChart

mDataset, mRenderer

Constructor Summary

Constructors

Constructor and Description
LineChart(XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer) Builds a new line chart instance.

Method Summary

Modifier and Type	Method and Description
protected ClickableArea[]	clickableAreasForPoints(List<Float> points, List<Double> values, float yAxisValue, int seriesIndex, int startIndex) Returns the clickable areas for all passed points
void	drawLegendShape(Canvas canvas, SimpleSeriesRenderer renderer, float x, float y, int seriesIndex, Paint paint) The graphical representation of the legend shape.
void	drawSeries(Canvas canvas, Paint paint, List<Float> points, XYSeriesRenderer renderer, float yAxisValue, int seriesIndex, int startIndex) The graphical representation of a series.
String	getChartType() Returns the chart type identifier.
int	getLegendShapeWidth(int seriesIndex) Returns the legend shape width.
ScatterChart	getPointsChart() Returns the scatter chart to be used for drawing the data points.
boolean	isRenderPoints(SimpleSeriesRenderer renderer) Returns if the chart should display the points as a certain shape.
protected void	setDatasetRenderer(XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer) Sets the series and the renderer.

Methods inherited from class com.codename1.charts.views.XYChart

draw, drawChartValuesText, drawPoints, drawSeries, drawText, drawXLabels, drawXTextLabels, drawYLabels, getCalcRange, getDataset, getDefaultMinimum, getRenderer, getScreenR, getSeriesAndPointForScreenCoordinate, getXLabels, getYLabels, isRenderNullValues, setCalcRange, setScreenR, toRealPoint, toRealPoint, toScreenPoint, toScreenPoint

Methods inherited from class com.codename1.charts.views.AbstractChart

drawBackground, drawLabel, drawLegend, drawPath, drawPath, drawString, getExceed, getLabel, getLegendSize, isNullValue, isVertical

Methods inherited from class java.lang.Object

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

Field Detail

TYPE

public static final String TYPE

The constant to identify this chart type.

See Also:

Constant Field Values

Constructor Detail

LineChart

public LineChart(XYMultipleSeriesDataset dataset,
                 XYMultipleSeriesRenderer renderer)

Builds a new line chart instance.

Parameters:

dataset - the multiple series dataset

renderer - the multiple series renderer

Method Detail

setDatasetRenderer

protected void setDatasetRenderer(XYMultipleSeriesDataset dataset,
                                  XYMultipleSeriesRenderer renderer)

Sets the series and the renderer.

Overrides:

setDatasetRenderer in class XYChart

Parameters:

dataset - the series dataset

renderer - the series renderer

drawSeries

public void drawSeries(Canvas canvas,
                       Paint paint,
                       List<Float> points,
                       XYSeriesRenderer renderer,
                       float yAxisValue,
                       int seriesIndex,
                       int startIndex)

The graphical representation of a series.

Specified by:

drawSeries in class XYChart

Parameters:

canvas - the canvas to paint to

paint - the paint to be used for drawing

points - the array of points to be used for drawing the series

seriesRenderer - the series renderer

yAxisValue - the minimum value of the y axis

seriesIndex - the index of the series currently being drawn

startIndex - the start index of the rendering points

clickableAreasForPoints

protected ClickableArea[] clickableAreasForPoints(List<Float> points,
                                                  List<Double> values,
                                                  float yAxisValue,
                                                  int seriesIndex,
                                                  int startIndex)

Description copied from class: XYChart

Returns the clickable areas for all passed points

Specified by:

clickableAreasForPoints in class XYChart

Parameters:

points - the array of points

values - the array of values of each point

yAxisValue - the minimum value of the y axis

seriesIndex - the index of the series to which the points belong

startIndex - the start index of the rendering points

Returns:

an array of rectangles with the clickable area

getLegendShapeWidth

public int getLegendShapeWidth(int seriesIndex)

Returns the legend shape width.

Specified by:

getLegendShapeWidth in class AbstractChart

Parameters:

seriesIndex - the series index

Returns:

the legend shape width

drawLegendShape

public void drawLegendShape(Canvas canvas,
                            SimpleSeriesRenderer renderer,
                            float x,
                            float y,
                            int seriesIndex,
                            Paint paint)

The graphical representation of the legend shape.

Specified by:

drawLegendShape in class AbstractChart

Parameters:

canvas - the canvas to paint to

renderer - the series renderer

x - the x value of the point the shape should be drawn at

y - the y value of the point the shape should be drawn at

seriesIndex - the series index

paint - the paint to be used for drawing

isRenderPoints

public boolean isRenderPoints(SimpleSeriesRenderer renderer)

Returns if the chart should display the points as a certain shape.

Overrides:

isRenderPoints in class XYChart

Parameters:

renderer - the series renderer

getPointsChart

public ScatterChart getPointsChart()

Returns the scatter chart to be used for drawing the data points.

Overrides:

getPointsChart in class XYChart

Returns:

the data points scatter chart

getChartType

public String getChartType()

Returns the chart type identifier.

Specified by:

getChartType in class XYChart

Returns:

the chart type