org.swtchart.internal
Class Legend

java.lang.Object
  Composite
      org.swtchart.internal.Legend

All Implemented Interfaces:

ILegend

public class Legend
extends Composite
implements ILegend

A legend for chart.

Constructor Summary

Legend(Chart chart, int style)
Constructor.

Method Summary

void	dispose()
protected void	drawSymbol(GC gc, Series series, Rectangle r) Draws the symbol of series.
Rectangle	getBounds(java.lang.String seriesId) Gets the rectangle associated with the given series id on legend.
int	getPosition() Gets the position of legend.
boolean	isVisible() Gets the visibility state.
void	paintControl(PaintEvent e)
void	setBackground(Color color) Sets the background color of legend.
void	setFont(Font font) Sets the font.
void	setForeground(Color color) Sets the foreground color of legend.
void	setPosition(int value) Sets the position of legend.
void	setVisible(boolean visible) Sets legend visible.
void	updateLayoutData() Update the layout data.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.swtchart.ILegend

getBackground, getFont, getForeground

Constructor Detail

Legend

public Legend(Chart chart,
              int style)

Constructor.

Parameters:

chart - the chart

style - the style

Method Detail

setVisible

public void setVisible(boolean visible)

Description copied from interface: ILegend

Sets legend visible.

Specified by:

setVisible in interface ILegend

Parameters:

visible - the visibility state

isVisible

public boolean isVisible()

Description copied from interface: ILegend

Gets the visibility state.

Specified by:

isVisible in interface ILegend

Returns:

true if legend is visible

setFont

public void setFont(Font font)

Description copied from interface: ILegend

Sets the font.

Specified by:

setFont in interface ILegend

Parameters:

font - the font

setForeground

public void setForeground(Color color)

Description copied from interface: ILegend

Sets the foreground color of legend.

Specified by:

setForeground in interface ILegend

Parameters:

color - the foreground color

setBackground

public void setBackground(Color color)

Description copied from interface: ILegend

Sets the background color of legend.

Specified by:

setBackground in interface ILegend

Parameters:

color - the background color

getPosition

public int getPosition()

Description copied from interface: ILegend

Gets the position of legend.

Specified by:

getPosition in interface ILegend

Returns:

the position of legend.

setPosition

public void setPosition(int value)

Description copied from interface: ILegend

Sets the position of legend. If the position is SWT.LEFT or SWT.RIGHT, the orientation of series on legend will be vertical. If the position is SWT.TOP or SWT.BOTTOM, the orientation will be horizontal.

Specified by:

setPosition in interface ILegend

Parameters:

value - the position of legend that can be SWT.LEFT, SWT.RIGHT, SWT.TOP or SWT.BOTTOM.

getBounds

public Rectangle getBounds(java.lang.String seriesId)

Description copied from interface: ILegend

Gets the rectangle associated with the given series id on legend. This method is typically used for mouse listener to check whether mouse cursor is on legend for a certain series.

Mouse listener can be added by casting ILegend to Control.

 Control legend = (Control) chart.getLegend();
 legend.addMouseListener(...);
 

Specified by:

getBounds in interface ILegend

Parameters:

seriesId - the series id

Returns:

the rectangle associated with the given series id in pixels.

dispose

public void dispose()

updateLayoutData

public void updateLayoutData()

Update the layout data.

drawSymbol

protected void drawSymbol(GC gc,
                          Series series,
                          Rectangle r)

Draws the symbol of series.

Parameters:

gc - the graphics context

series - the series

r - the rectangle to draw the symbol of series

paintControl

public void paintControl(PaintEvent e)