com.telerik.widget.chart.visualization.behaviors

Class ChartPanAndZoomBehavior

java.lang.Object

com.telerik.android.common.PropertyManager

com.telerik.widget.chart.visualization.behaviors.ChartBehavior

com.telerik.widget.chart.visualization.behaviors.ChartPanAndZoomBehavior

public class ChartPanAndZoomBehavior
extends ChartBehavior

Represents a chart behavior that handles pinch and drag gestures and manipulates the zoom and pan properties of the associated RadCartesianChartView instance.

Constructor Summary

Constructors

Constructor and Description
ChartPanAndZoomBehavior() Creates a new instance of the ChartPanAndZoomBehavior class.

Method Summary

Modifier and Type	Method and Description
void	addPanZoomListener(PanZoomListener listener)
DeferredZoomPresenter	getDeferredZoomPresenter() Gets the DeferredZoomPresenter.
boolean	getHandleDoubleTap() Gets whether a double-tap gesture will be handled by the behavior to reset the current Zoom and PanOffset values.
int	getPanMode() Gets the ChartPanZoomMode value that specifies how the chart will respond to a pan gesture.
int	getZoomMode() Gets the ChartPanZoomMode value that specifies how the chart will respond to a zoom gesture.
ChartZoomStrategy	getZoomStrategy() Gets the current ChartZoomStrategy.
boolean	isPinching() Gets value that indicates whether the behavior is processing a pinch gesture.
boolean	isZoomed()
boolean	onDoubleTap(MotionEvent event) Invoked when a double tap gesture occurs on the owner chart.
boolean	onDrag(MotionEvent event, MotionEvent event2, RadSize distance, boolean isInHold) Invoked when a drag gesture occurs on the owner chart.
boolean	onPinch(ChartScaleGestureDetector detector, MotionEvent pinchEvent) Invoked when a pinch gesture occurs on the owner chart.
void	onPinchComplete() Called when the pinch gesture finishes.
void	removePanZoomListener(PanZoomListener listener)
void	reset() Resets the behavior.
void	setDeferredZoomPresenter(DeferredZoomPresenter value) Sets the DeferredZoomPresenter.
void	setHandleDoubleTap(boolean value) Sets whether a double-tap gesture will be handled by the behavior to reset the current Zoom and PanOffset values.
void	setPanMode(int value) Sets the ChartPanZoomMode value that specifies how the chart will respond to a pan gesture.
void	setPanOffsetToChart(double offsetX, double offsetY)
void	setZoomMode(int value) Sets the ChartPanZoomMode value that specifies how the chart will respond to a zoom gesture.
void	setZoomStrategy(ChartZoomStrategy value) Sets the ChartZoomStrategy.
void	setZoomToChart(double scale, double centerX, double centerY)
void	setZoomToChart(double scaleX, double scaleY, double centerX, double centerY)

Methods inherited from class com.telerik.widget.chart.visualization.behaviors.ChartBehavior

attach, chart, detach, onDown, onHold, onTap, onUp

Methods inherited from class com.telerik.android.common.PropertyManager

getValue, resetPropertyValue, setValue, setValue

Methods inherited from class java.lang.Object

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

Constructor Detail

ChartPanAndZoomBehavior

public ChartPanAndZoomBehavior()

Creates a new instance of the ChartPanAndZoomBehavior class.

Method Detail

addPanZoomListener

public void addPanZoomListener(PanZoomListener listener)

removePanZoomListener

public void removePanZoomListener(PanZoomListener listener)

getZoomStrategy

public ChartZoomStrategy getZoomStrategy()

Gets the current ChartZoomStrategy.

setZoomStrategy

public void setZoomStrategy(ChartZoomStrategy value)

Sets the ChartZoomStrategy.

getHandleDoubleTap

public boolean getHandleDoubleTap()

Gets whether a double-tap gesture will be handled by the behavior to reset the current Zoom and PanOffset values.

Returns:

whether a double tab gesture is handled.

setHandleDoubleTap

public void setHandleDoubleTap(boolean value)

Sets whether a double-tap gesture will be handled by the behavior to reset the current Zoom and PanOffset values.

Parameters:

value - the new handle state.

getZoomMode

public int getZoomMode()

Gets the ChartPanZoomMode value that specifies how the chart will respond to a zoom gesture.

Returns:

the current zoom mode.

setZoomMode

public void setZoomMode(int value)

Sets the ChartPanZoomMode value that specifies how the chart will respond to a zoom gesture.

Parameters:

value - the new zoom mode.

getPanMode

public int getPanMode()

Gets the ChartPanZoomMode value that specifies how the chart will respond to a pan gesture.

Returns:

the current pan mode.

setPanMode

public void setPanMode(int value)

Sets the ChartPanZoomMode value that specifies how the chart will respond to a pan gesture.

Parameters:

value - the new pan mode.

isPinching

public boolean isPinching()

Gets value that indicates whether the behavior is processing a pinch gesture.

getDeferredZoomPresenter

public DeferredZoomPresenter getDeferredZoomPresenter()

Gets the DeferredZoomPresenter.

setDeferredZoomPresenter

public void setDeferredZoomPresenter(DeferredZoomPresenter value)

Sets the DeferredZoomPresenter.

onPinchComplete

public void onPinchComplete()

Description copied from class: ChartBehavior

Called when the pinch gesture finishes.

Overrides:

onPinchComplete in class ChartBehavior

onDrag

public boolean onDrag(MotionEvent event,
                      MotionEvent event2,
                      RadSize distance,
                      boolean isInHold)

Description copied from class: ChartBehavior

Invoked when a drag gesture occurs on the owner chart.

Overrides:

onDrag in class ChartBehavior

Parameters:

event - Information for the event that started the gesture.

event2 - Information for the event that caused the current drag gesture

distance - The distance travelled since the previous gesture. This is NOT the distance between initialEvent and currentEvent.

Returns:

Returns true if the gesture is handled.

reset

public void reset()

Description copied from class: ChartBehavior

Resets the behavior. This occurs when the chart has major changes like new series or different axes.

Overrides:

reset in class ChartBehavior

isZoomed

public boolean isZoomed()

setPanOffsetToChart

public void setPanOffsetToChart(double offsetX,
                                double offsetY)

setZoomToChart

public void setZoomToChart(double scale,
                           double centerX,
                           double centerY)

setZoomToChart

public void setZoomToChart(double scaleX,
                           double scaleY,
                           double centerX,
                           double centerY)

onDoubleTap

public boolean onDoubleTap(MotionEvent event)

Description copied from class: ChartBehavior

Invoked when a double tap gesture occurs on the owner chart.

Overrides:

onDoubleTap in class ChartBehavior

Parameters:

event - An object that contains gesture information.

Returns:

Returns true if the gesture is handled.

onPinch

public boolean onPinch(ChartScaleGestureDetector detector,
                       MotionEvent pinchEvent)

Description copied from class: ChartBehavior

Invoked when a pinch gesture occurs on the owner chart.

Overrides:

onPinch in class ChartBehavior

Parameters:

detector - The scale detector that detected this gesture.

pinchEvent - The MotionEvent that represents this pinch gesture.

Returns:

Returns true if the gesture is handled.