org.jfree.chart.plot.dial
Interface DialLayer
- DialFrame, DialScale
- AbstractDialLayer, ArcDialFrame, DialBackground, DialCap, DialPointer, DialPointer.Pin, DialPointer.Pointer, DialTextAnnotation, DialValueIndicator, StandardDialFrame, StandardDialRange, StandardDialScale
A dial layer draws itself within a reference frame. The view frame is a
subset of the reference frame, and defines the area that is actually
visible.
Classes that implement this interface should be Serializable
,
otherwise chart serialization may fail.
void | addChangeListener(DialLayerChangeListener listener) - Registers a listener with this layer, so that it receives notification
of changes to this layer.
|
void | draw(Graphics2D g2, DialPlot plot, Rectangle2D frame, Rectangle2D view) - Draws the content of this layer.
|
boolean | hasListener(EventListener listener) - Returns
true if the specified listener is currently
registered with the this layer.
|
boolean | isClippedToWindow() - Returns
true if the drawing should be clipped to the
dial window (which is defined by the DialFrame ), and
false otherwise.
|
boolean | isVisible() - Returns a flag that indicates whether or not the layer is visible.
|
void | removeChangeListener(DialLayerChangeListener listener) - Deregisters a listener, so that it no longer receives notification of
changes to this layer.
|
draw
public void draw(Graphics2D g2,
DialPlot plot,
Rectangle2D frame,
Rectangle2D view)
Draws the content of this layer.
g2
- the graphics target (null
not permitted).plot
- the plot (typically this should not be null
,
but for a layer that doesn't need to reference the plot, it may
be permitted).frame
- the reference frame for the dial's geometry
(null
not permitted). This is typically larger than
the visible area of the dial (see the next parameter).view
- the visible area for the dial (null
not
permitted).
hasListener
public boolean hasListener(EventListener listener)
Returns true
if the specified listener is currently
registered with the this layer.
isClippedToWindow
public boolean isClippedToWindow()
Returns
true
if the drawing should be clipped to the
dial window (which is defined by the
DialFrame
), and
false
otherwise.
isVisible
public boolean isVisible()
Returns a flag that indicates whether or not the layer is visible.