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java.lang.Objectorg.jfree.chart.renderer.AbstractRenderer
org.jfree.chart.renderer.AbstractCategoryItemRenderer
org.jfree.chart.renderer.BarRenderer
A CategoryItemRenderer
that draws individual data items as bars.
Field Summary | |
static double |
BAR_OUTLINE_WIDTH_THRESHOLD
Constant that controls the minimum width before a bar has an outline drawn. |
static double |
DEFAULT_ITEM_MARGIN
The default item margin percentage. |
Fields inherited from class org.jfree.chart.renderer.AbstractRenderer |
DEFAULT_OUTLINE_PAINT, DEFAULT_OUTLINE_STROKE, DEFAULT_PAINT, DEFAULT_SHAPE, DEFAULT_STROKE, DEFAULT_VALUE_LABEL_FONT, DEFAULT_VALUE_LABEL_PAINT, ZERO |
Constructor Summary | |
BarRenderer()
Creates a new bar renderer with default settings. |
Method Summary | |
protected double[] |
calculateBarL0L1(double value)
Calculates the coordinates for the length of a single bar. |
protected double |
calculateBarW0(CategoryPlot plot,
PlotOrientation orientation,
java.awt.geom.Rectangle2D dataArea,
CategoryAxis domainAxis,
CategoryItemRendererState state,
int row,
int column)
Calculates the coordinate of the first "side" of a bar. |
protected void |
calculateBarWidth(CategoryPlot plot,
java.awt.geom.Rectangle2D dataArea,
java.lang.Integer rendererIndex,
CategoryItemRendererState state)
Calculates the bar width and stores it in the renderer state. |
protected double |
calculateSeriesWidth(double space,
CategoryAxis axis,
int categories,
int series)
Calculates the available space for each series. |
void |
drawItem(java.awt.Graphics2D g2,
CategoryItemRendererState state,
java.awt.geom.Rectangle2D dataArea,
CategoryPlot plot,
CategoryAxis domainAxis,
ValueAxis rangeAxis,
CategoryDataset dataset,
int row,
int column)
Draws the bar for a single (series, category) data item. |
protected void |
drawItemLabel(java.awt.Graphics2D g2,
CategoryDataset data,
int row,
int column,
CategoryPlot plot,
CategoryItemLabelGenerator generator,
java.awt.geom.Rectangle2D bar,
boolean negative)
Draws an item label. |
boolean |
equals(java.lang.Object object)
Tests an object for equality with this instance. |
org.jfree.ui.GradientPaintTransformer |
getGradientPaintTransformer()
Returns the gradient paint transformer (an object used to transform gradient paint objects to fit each bar. |
double |
getItemMargin()
Returns the item margin. |
double |
getLowerClip()
Returns the lower clip value. |
double |
getMaxBarWidth()
Returns the maximum bar width, as a percentage of the available drawing space. |
double |
getMinimumBarLength()
Returns the minimum bar length. |
ItemLabelPosition |
getNegativeItemLabelPositionFallback()
Returns the fallback position for negative item labels that don't fit within a bar. |
ItemLabelPosition |
getPositiveItemLabelPositionFallback()
Returns the fallback position for positive item labels that don't fit within a bar. |
double |
getUpperClip()
Returns the upper clip value. |
CategoryItemRendererState |
initialise(java.awt.Graphics2D g2,
java.awt.geom.Rectangle2D dataArea,
CategoryPlot plot,
java.lang.Integer rendererIndex,
PlotRenderingInfo info)
Initialises the renderer and returns a state object that will be passed to subsequent calls to the drawItem method. |
boolean |
isDrawBarOutline()
Returns a flag that controls whether or not bar outlines are drawn. |
void |
setDrawBarOutline(boolean draw)
Sets the flag that controls whether or not bar outlines are drawn. |
void |
setGradientPaintTransformer(org.jfree.ui.GradientPaintTransformer transformer)
Sets the gradient paint transformer and sends a RendererChangeEvent to all registered
listeners. |
void |
setItemMargin(double percent)
Sets the item margin. |
void |
setMaxBarWidth(double percent)
Sets the maximum bar width, which is specified as a percentage of the available space for all bars, and sends a RendererChangeEvent to all registered listeners. |
void |
setMinimumBarLength(double min)
Sets the minimum bar length and sends a RendererChangeEvent to all registered
listeners. |
void |
setNegativeItemLabelPositionFallback(ItemLabelPosition position)
Sets the fallback position for negative item labels that don't fit within a bar, and sends a RendererChangeEvent to all registered listeners. |
void |
setPositiveItemLabelPositionFallback(ItemLabelPosition position)
Sets the fallback position for positive item labels that don't fit within a bar, and sends a RendererChangeEvent to all registered listeners. |
Methods inherited from class java.lang.Object |
finalize, getClass, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface org.jfree.util.PublicCloneable |
clone |
Field Detail |
public static final double DEFAULT_ITEM_MARGIN
public static final double BAR_OUTLINE_WIDTH_THRESHOLD
Constructor Detail |
public BarRenderer()
Method Detail |
public double getItemMargin()
public void setItemMargin(double percent)
percent
- the new margin.public boolean isDrawBarOutline()
public void setDrawBarOutline(boolean draw)
draw
- the new flag value.public double getMaxBarWidth()
public void setMaxBarWidth(double percent)
RendererChangeEvent
to all registered listeners.
percent
- the percent.public double getMinimumBarLength()
public void setMinimumBarLength(double min)
RendererChangeEvent
to all registered
listeners.
min
- the minimum bar length.public org.jfree.ui.GradientPaintTransformer getGradientPaintTransformer()
null
possible).public void setGradientPaintTransformer(org.jfree.ui.GradientPaintTransformer transformer)
RendererChangeEvent
to all registered
listeners.
transformer
- the transformer (null
permitted).public ItemLabelPosition getPositiveItemLabelPositionFallback()
null
possible).public void setPositiveItemLabelPositionFallback(ItemLabelPosition position)
RendererChangeEvent
to all registered listeners.
position
- the position.public ItemLabelPosition getNegativeItemLabelPositionFallback()
null
possible).public void setNegativeItemLabelPositionFallback(ItemLabelPosition position)
RendererChangeEvent
to all registered listeners.
position
- the position.public double getLowerClip()
This value is recalculated in the initialise() method.
public double getUpperClip()
This value is recalculated in the initialise() method.
public CategoryItemRendererState initialise(java.awt.Graphics2D g2, java.awt.geom.Rectangle2D dataArea, CategoryPlot plot, java.lang.Integer rendererIndex, PlotRenderingInfo info)
This method gets called once at the start of the process of drawing a chart.
initialise
in interface CategoryItemRenderer
initialise
in class AbstractCategoryItemRenderer
g2
- the graphics device.dataArea
- the area in which the data is to be plotted.plot
- the plot.rendererIndex
- the renderer index (null
for the primary renderer).info
- collects chart rendering information for return to caller.
protected void calculateBarWidth(CategoryPlot plot, java.awt.geom.Rectangle2D dataArea, java.lang.Integer rendererIndex, CategoryItemRendererState state)
plot
- the plot.dataArea
- the data area.rendererIndex
- the renderer index.state
- the renderer state.protected double calculateBarW0(CategoryPlot plot, PlotOrientation orientation, java.awt.geom.Rectangle2D dataArea, CategoryAxis domainAxis, CategoryItemRendererState state, int row, int column)
plot
- the plot.orientation
- the plot orientation.dataArea
- the data area.domainAxis
- the domain axis.state
- the renderer state (has the bar width precalculated).row
- the row index.column
- the column index.
protected double[] calculateBarL0L1(double value)
value
- the value represented by the bar.
null
if the bar is not
visible for the current axis range).public void drawItem(java.awt.Graphics2D g2, CategoryItemRendererState state, java.awt.geom.Rectangle2D dataArea, CategoryPlot plot, CategoryAxis domainAxis, ValueAxis rangeAxis, CategoryDataset dataset, int row, int column)
drawItem
in interface CategoryItemRenderer
g2
- the graphics device.state
- the renderer state.dataArea
- the data area.plot
- the plot.domainAxis
- the domain axis.rangeAxis
- the range axis.dataset
- the dataset.row
- the row index (zero-based).column
- the column index (zero-based).protected double calculateSeriesWidth(double space, CategoryAxis axis, int categories, int series)
space
- the space along the entire axis (in Java2D units).axis
- the category axis.categories
- the number of categories.series
- the number of series.
protected void drawItemLabel(java.awt.Graphics2D g2, CategoryDataset data, int row, int column, CategoryPlot plot, CategoryItemLabelGenerator generator, java.awt.geom.Rectangle2D bar, boolean negative)
g2
- the graphics device.data
- the dataset.row
- the row.column
- the column.plot
- the plot.generator
- the label generator.bar
- the bar.negative
- a flag indicating a negative value.public boolean equals(java.lang.Object object)
equals
in class AbstractCategoryItemRenderer
object
- the object.
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