com.github.mikephil.charting.listener

Class BarLineChartTouchListener

java.lang.Object

android.view.GestureDetector.SimpleOnGestureListener

com.github.mikephil.charting.listener.ChartTouchListener<BarLineChartBase<? extends BarLineScatterCandleBubbleData<? extends IBarLineScatterCandleBubbleDataSet<? extends Entry>>>>

com.github.mikephil.charting.listener.BarLineChartTouchListener

All Implemented Interfaces:

android.view.GestureDetector.OnContextClickListener, android.view.GestureDetector.OnDoubleTapListener, android.view.GestureDetector.OnGestureListener, android.view.View.OnTouchListener

public class BarLineChartTouchListener
extends ChartTouchListener<BarLineChartBase<? extends BarLineScatterCandleBubbleData<? extends IBarLineScatterCandleBubbleDataSet<? extends Entry>>>>

TouchListener for Bar-, Line-, Scatter- and CandleStickChart with handles all touch interaction. Longpress == Zoom out. Double-Tap == Zoom in.

Nested Class Summary

Nested classes/interfaces inherited from class com.github.mikephil.charting.listener.ChartTouchListener

ChartTouchListener.ChartGesture

Field Summary

Fields inherited from class com.github.mikephil.charting.listener.ChartTouchListener

DRAG, mChart, mGestureDetector, mLastGesture, mLastHighlighted, mTouchMode, NONE, PINCH_ZOOM, POST_ZOOM, ROTATE, X_ZOOM, Y_ZOOM

Constructor Summary

Constructors

Constructor and Description
BarLineChartTouchListener(BarLineChartBase<? extends BarLineScatterCandleBubbleData<? extends IBarLineScatterCandleBubbleDataSet<? extends Entry>>> chart, android.graphics.Matrix touchMatrix, float dragTriggerDistance) Constructor with initialization parameters.

Method Summary

Modifier and Type	Method and Description
void	computeScroll()
android.graphics.Matrix	getMatrix() returns the matrix object the listener holds
MPPointF	getTrans(float x, float y) Returns a recyclable MPPointF instance.
boolean	onDoubleTap(android.view.MotionEvent e)
boolean	onFling(android.view.MotionEvent e1, android.view.MotionEvent e2, float velocityX, float velocityY)
void	onLongPress(android.view.MotionEvent e)
boolean	onSingleTapUp(android.view.MotionEvent e)
boolean	onTouch(android.view.View v, android.view.MotionEvent event)
void	setDragTriggerDist(float dragTriggerDistance) Sets the minimum distance that will be interpreted as a "drag" by the chart in dp.
void	stopDeceleration()

Methods inherited from class com.github.mikephil.charting.listener.ChartTouchListener

distance, endAction, getLastGesture, getTouchMode, performHighlight, setLastHighlighted, startAction

Methods inherited from class android.view.GestureDetector.SimpleOnGestureListener

onContextClick, onDoubleTapEvent, onDown, onScroll, onShowPress, onSingleTapConfirmed

Methods inherited from class java.lang.Object

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

Constructor Detail

BarLineChartTouchListener

public BarLineChartTouchListener(BarLineChartBase<? extends BarLineScatterCandleBubbleData<? extends IBarLineScatterCandleBubbleDataSet<? extends Entry>>> chart,
                                 android.graphics.Matrix touchMatrix,
                                 float dragTriggerDistance)

Constructor with initialization parameters.

Parameters:

chart - instance of the chart

touchMatrix - the touch-matrix of the chart

dragTriggerDistance - the minimum movement distance that will be interpreted as a "drag" gesture in dp (3dp equals to about 9 pixels on a 5.5" FHD screen)

Method Detail

onTouch

public boolean onTouch(android.view.View v,
                       android.view.MotionEvent event)

getTrans

public MPPointF getTrans(float x,
                         float y)

Returns a recyclable MPPointF instance. returns the correct translation depending on the provided x and y touch points

Parameters:

x -

y -

Returns:

getMatrix

public android.graphics.Matrix getMatrix()

returns the matrix object the listener holds

Returns:

setDragTriggerDist

public void setDragTriggerDist(float dragTriggerDistance)

Sets the minimum distance that will be interpreted as a "drag" by the chart in dp. Default: 3dp

Parameters:

dragTriggerDistance -

onDoubleTap

public boolean onDoubleTap(android.view.MotionEvent e)

Specified by:

onDoubleTap in interface android.view.GestureDetector.OnDoubleTapListener

Overrides:

onDoubleTap in class android.view.GestureDetector.SimpleOnGestureListener

onLongPress

public void onLongPress(android.view.MotionEvent e)

Specified by:

onLongPress in interface android.view.GestureDetector.OnGestureListener

Overrides:

onLongPress in class android.view.GestureDetector.SimpleOnGestureListener

onSingleTapUp

public boolean onSingleTapUp(android.view.MotionEvent e)

Specified by:

onSingleTapUp in interface android.view.GestureDetector.OnGestureListener

Overrides:

onSingleTapUp in class android.view.GestureDetector.SimpleOnGestureListener

onFling

public boolean onFling(android.view.MotionEvent e1,
                       android.view.MotionEvent e2,
                       float velocityX,
                       float velocityY)

Specified by:

onFling in interface android.view.GestureDetector.OnGestureListener

Overrides:

onFling in class android.view.GestureDetector.SimpleOnGestureListener

stopDeceleration

public void stopDeceleration()

computeScroll

public void computeScroll()