All Superinterfaces:

Serializable

All Known Implementing Classes:

DefaultSelectionZoomStrategy
```
public interface SelectionZoomStrategy
extends Serializable
```
A strategy for zooming plots on the chart panel by selecting a smaller region on the initial screen. See ChartPanel.setSelectionZoomStrategy(SelectionZoomStrategy)

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`drawZoomRectangle(Graphics2D g2, boolean xor)`	Draws zoom rectangle (if present).
`boolean`	`getFillZoomRectangle()`	Returns the flag that controls whether or not the zoom rectangle is filled when drawn.
`Paint`	`getZoomFillPaint()`	Returns the zoom rectangle fill paint.
`Paint`	`getZoomOutlinePaint()`	Returns the zoom rectangle outline paint.
`Point2D`	`getZoomPoint()`	The zoom rectangle starting point (selected by the user with a mouse click).
`Rectangle2D`	`getZoomRectangle(boolean hZoom, boolean vZoom, Rectangle2D screenDataArea)`	Creates and returns current zoom rectangle
`int`	`getZoomTriggerDistance()`	Returns the zoom trigger distance.
`boolean`	`isActivated()`	If controller currently tracking zoom rectangle
`void`	`reset()`	Removes zoom rectangle
`void`	`setFillZoomRectangle(boolean flag)`	A flag that controls how the zoom rectangle is drawn.
`void`	`setZoomFillPaint(Paint paint)`	Sets the zoom rectangle fill paint.
`void`	`setZoomOutlinePaint(Paint paint)`	Sets the zoom rectangle outline paint.
`void`	`setZoomPoint(Point2D zoomPoint)`
`void`	`setZoomTriggerDistance(int distance)`	Sets the zoom trigger distance.
`void`	`updateZoomRectangleSelection(MouseEvent e, boolean hZoom, boolean vZoom, Rectangle2D scaledDataArea)`	Updates zoom rectangle with new mouse position

- Method Detail
  - isActivated
```
boolean isActivated()
```
    If controller currently tracking zoom rectangle
    
    Returns:
    
    true if zoomRectangle exists for this controller and false otherwise
  - getZoomPoint
```
Point2D getZoomPoint()
```
    The zoom rectangle starting point (selected by the user with a mouse click). This is a point on the screen, not the chart (which may have been scaled up or down to fit the panel).
  - setZoomPoint
```
void setZoomPoint(Point2D zoomPoint)
```
  - setZoomTriggerDistance
```
void setZoomTriggerDistance(int distance)
```
    Sets the zoom trigger distance. This controls how far the mouse must move before a zoom action is triggered.
    
    Parameters:
    
    distance - the distance (in Java2D units).
  - getZoomTriggerDistance
```
int getZoomTriggerDistance()
```
    Returns the zoom trigger distance. This controls how far the mouse must move before a zoom action is triggered.
    
    Returns:
    
    The distance (in Java2D units).
  - getZoomOutlinePaint
```
Paint getZoomOutlinePaint()
```
    Returns the zoom rectangle outline paint.
    
    Returns:
    
    The zoom rectangle outline paint (never null).
    
    See Also:
    
    setZoomOutlinePaint(java.awt.Paint), setFillZoomRectangle(boolean)
  - setZoomOutlinePaint
```
void setZoomOutlinePaint(Paint paint)
```
    Sets the zoom rectangle outline paint.
    
    Parameters:
    
    paint - the paint (null not permitted).
    
    See Also:
    
    getZoomOutlinePaint(), getFillZoomRectangle()
  - getZoomFillPaint
```
Paint getZoomFillPaint()
```
    Returns the zoom rectangle fill paint.
    
    Returns:
    
    The zoom rectangle fill paint (never null).
    
    See Also:
    
    setZoomFillPaint(Paint), setFillZoomRectangle(boolean)
  - setZoomFillPaint
```
void setZoomFillPaint(Paint paint)
```
    Sets the zoom rectangle fill paint.
    
    Parameters:
    
    paint - the paint (null not permitted).
    
    See Also:
    
    getZoomFillPaint(), getFillZoomRectangle()
  - getFillZoomRectangle
```
boolean getFillZoomRectangle()
```
    Returns the flag that controls whether or not the zoom rectangle is filled when drawn.
    
    Returns:
    
    A boolean.
  - setFillZoomRectangle
```
void setFillZoomRectangle(boolean flag)
```
    A flag that controls how the zoom rectangle is drawn.
    
    Parameters:
    
    flag - true instructs to fill the rectangle on zoom, otherwise it will be outlined.
  - updateZoomRectangleSelection
```
void updateZoomRectangleSelection(MouseEvent e,
                                  boolean hZoom,
                                  boolean vZoom,
                                  Rectangle2D scaledDataArea)
```
    Updates zoom rectangle with new mouse position
    
    Parameters:
    
    e - mouse event
    
    hZoom - if horizontal zoom allowed
    
    vZoom - if vertical zoom allowed
    
    scaledDataArea - plot area in screen coordinates
  - getZoomRectangle
```
Rectangle2D getZoomRectangle(boolean hZoom,
                             boolean vZoom,
                             Rectangle2D screenDataArea)
```
    Creates and returns current zoom rectangle
    
    Parameters:
    
    hZoom - if horizontal zoom acceptable
    
    vZoom - if vertical zoom acceptable
    
    screenDataArea - rectangle that describes plot on the screen
    
    Returns:
    
    rectangle in java2d screen coordinates selected by user
  - reset
```
void reset()
```
    Removes zoom rectangle
  - drawZoomRectangle
```
void drawZoomRectangle(Graphics2D g2,
                       boolean xor)
```
    Draws zoom rectangle (if present). The drawing is performed in XOR mode, therefore when this method is called twice in a row, the second call will completely restore the state of the canvas.
    
    Parameters:
    
    g2 - the graphics device.
    
    xor - use XOR for drawing?

Interface SelectionZoomStrategy

Method Summary

Method Detail

isActivated

getZoomPoint

setZoomPoint

setZoomTriggerDistance

getZoomTriggerDistance

getZoomOutlinePaint

setZoomOutlinePaint

getZoomFillPaint

setZoomFillPaint

getFillZoomRectangle

setFillZoomRectangle

updateZoomRectangleSelection

getZoomRectangle

reset

drawZoomRectangle