Class PinchZoomModifier
The PinchZoomModifier provides zooming of the SciChartSurface with the pinch gesture.
Inheritance
Inherited Members
Namespace:
Assembly: .dll
Syntax
public class PinchZoomModifier extends ScaleModifierBaseConstructors
PinchZoomModifier()
Declaration
public PinchZoomModifier()Methods
getApplicableXAxes()
Gets the Iterable collection of the XAxes to which this modifier may be applicable on.
Declaration
protected Iterable<IAxis> getApplicableXAxes()Returns
| Type | Description |
|---|---|
| Iterable<IAxis> | The collection of the XAxes which this modifier may be applicable on. |
getApplicableYAxes()
Gets the Iterable collection of the YAxes to which this modifier may be applicable on.
Declaration
protected Iterable<IAxis> getApplicableYAxes()Returns
| Type | Description |
|---|---|
| Iterable<IAxis> | The collection of the YAxes which this modifier may be applicable on. |
getDirection()
Gets the Direction2D to restrict zoom interactivity to.
Declaration
public final Direction2D getDirection()Returns
| Type | Description |
|---|---|
| Direction2D | The Direction2D to restrict zoom interactivity to. |
getIsUniformZoom()
Sets the value which indicates whether uniform zoom should be used by this modifier.
When uniform zoom is set to true then modifier applies same scale factor for both x and y direction, otherwise scale factor calculated separately for x and y direction based on information from touch events
Declaration
public final boolean getIsUniformZoom()Returns
| Type | Description |
|---|---|
| boolean | Current |
getScaleFactor()
Gets the scale factor to scale (or shrink) both axes on pinch gesture.
Declaration
public final float getScaleFactor()Returns
| Type | Description |
|---|---|
| float | Float value which indicates scale factor. |
includeAllAxes()
Includes all X and Y axes
Declaration
public void includeAllAxes()Overrides
includeXAxis(IAxis axis, boolean isIncluded)
Includes or excludes X axis
Declaration
public void includeXAxis(IAxis axis, boolean isIncluded)Parameters
| Type | Name | Description |
|---|---|---|
| IAxis | axis | |
| boolean | isIncluded |
Overrides
includeYAxis(IAxis axis, boolean isIncluded)
Includes or excludes Y axis
Declaration
public void includeYAxis(IAxis axis, boolean isIncluded)Parameters
| Type | Name | Description |
|---|---|---|
| IAxis | axis | |
| boolean | isIncluded |
Overrides
onScale(ScaleGestureDetector detector)
Declaration
public boolean onScale(ScaleGestureDetector detector)Parameters
| Type | Name | Description |
|---|---|---|
| android.view.ScaleGestureDetector | detector |
Returns
| Type | Description |
|---|---|
| boolean |
onScaleBegin(ScaleGestureDetector detector)
Declaration
public boolean onScaleBegin(ScaleGestureDetector detector)Parameters
| Type | Name | Description |
|---|---|---|
| android.view.ScaleGestureDetector | detector |
Returns
| Type | Description |
|---|---|
| boolean |
onScaleEnd(ScaleGestureDetector detector)
Declaration
public void onScaleEnd(ScaleGestureDetector detector)Parameters
| Type | Name | Description |
|---|---|---|
| android.view.ScaleGestureDetector | detector |
performZoom(PointF point, double xValue, double yValue)
Performs a zoom around the passed in point by the specified X and Y factor
Declaration
protected void performZoom(PointF point, double xValue, double yValue)Parameters
| Type | Name | Description |
|---|---|---|
| android.graphics.PointF | point | The point to perform zoom around. |
| double | xValue | The x zoom factor. |
| double | yValue | The y zoom factor. |
setDirection(Direction2D direction)
Sets the Direction2D to restrict zoom interactivity to.
Declaration
public final void setDirection(Direction2D direction)Parameters
| Type | Name | Description |
|---|---|---|
| Direction2D | direction | The new Direction2D to restrict zoom interactivity to. |
setIsUniformZoom(boolean isUniformZoom)
Sets the value which indicates whether uniform zoom should be used by this modifier
When uniform zoom is set to true then modifier applies same scale factor for both x and y direction, otherwise scale factor calculated separately for x and y direction based on information from touch events
Declaration
public final void setIsUniformZoom(boolean isUniformZoom)Parameters
| Type | Name | Description |
|---|---|---|
| boolean | isUniformZoom | The new |
setScaleFactor(float scaleFactor)
Sets the scale factor to scale (or shrink) both axes on pinch gesture.
Declaration
public final void setScaleFactor(float scaleFactor)Parameters
| Type | Name | Description |
|---|---|---|
| float | scaleFactor | The scale factor to scale (or shrink) both axes on pinch gesture. |