com.alexvasilkov.gestures

Class StateController

java.lang.Object

com.alexvasilkov.gestures.StateController

public class StateController
extends java.lang.Object

Helper class that holds reference to Settings object and controls some aspects of view State, such as movement bounds restrictions (see getMovementArea(State, RectF)) and dynamic min / max zoom levels (see getMinZoom(State) and getMaxZoom(State)).

Method Summary

Modifier and Type	Method and Description
float	applyZoomPatch(float zoom)
void	applyZoomPatch(State state)
float	getFitZoom(State state)
float	getMaxZoom(State state)
float	getMinZoom(State state)
void	getMovementArea(State state, android.graphics.RectF out) Calculates area in which State.getX() & State.getY() values can change.
void	setTempZoomPatch(float factor)

Methods inherited from class java.lang.Object

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

Method Detail

setTempZoomPatch

public void setTempZoomPatch(float factor)

applyZoomPatch

public void applyZoomPatch(@NonNull
                           State state)

applyZoomPatch

public float applyZoomPatch(float zoom)

getMinZoom

public float getMinZoom(@NonNull
                        State state)

Parameters:

state - Current state

Returns:

Min zoom level as it's used by state controller.

getMaxZoom

public float getMaxZoom(@NonNull
                        State state)

Parameters:

state - Current state

Returns:

Max zoom level as it's used by state controller. Note, that it may be different from Settings.getMaxZoom().

getFitZoom

public float getFitZoom(@NonNull
                        State state)

Parameters:

state - Current state

Returns:

Zoom level which will fit the image into viewport (or min zoom level if Settings.getFitMethod() is Settings.Fit.NONE).

getMovementArea

public void getMovementArea(@NonNull
                            State state,
                            @NonNull
                            android.graphics.RectF out)

Calculates area in which State.getX() & State.getY() values can change. Note, that this is different from Settings.setMovementArea(int, int) which defines part of the viewport in which image can move.

Parameters:

state - Current state

out - Output movement area rectangle