com.bogdwellers.pinchtozoom

Class ImageViewerCorrector

java.lang.Object

com.bogdwellers.pinchtozoom.MatrixCorrector

com.bogdwellers.pinchtozoom.ImageMatrixCorrector

com.bogdwellers.pinchtozoom.ImageViewerCorrector

public class ImageViewerCorrector
extends ImageMatrixCorrector

This MatrixCorrector implementation defines the default behavior for an image viewer.

It works properly only if the following two conditions are met:

1. There are no rotations
2. The scaling is uniform: sx and sy are always the same value

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	TAG

Constructor Summary

Constructors

Constructor and Description
ImageViewerCorrector()
ImageViewerCorrector(android.widget.ImageView imageView, float maxScale)

Method Summary

Modifier and Type	Method and Description
float	correctAbsolute(int vector, float x) * Returns the corrected value of the given absolute vector.
static float	correctTranslation(float translation, float viewDim, float imgDim) Corrects the translation so that it does not exceed the allowed bounds.
float	getMaxScale() Returns the maximum allowed scale.
boolean	isMaxScaleRelative() Indicates whether the maximum scale should be relative to the inner fit scale.
void	performAbsoluteCorrections() Does corrections AFTER matrix operations have been applied.
void	setMaxScale(float maxScale) Sets the maximum allowed scale.
void	setMaxScaleRelative(boolean maxScaleRelative) Sets whether the maximum scale should be relative to the inner fit scale.

Methods inherited from class com.bogdwellers.pinchtozoom.ImageMatrixCorrector

getImageView, getInnerFitScale, getScaledImageHeight, getScaledImageWidth, setImageView, setMatrix, updateScaledImageDimensions

Methods inherited from class com.bogdwellers.pinchtozoom.MatrixCorrector

correctRelative, getMatrix, getValues

Methods inherited from class java.lang.Object

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

Field Detail

TAG

public static final java.lang.String TAG

Constructor Detail

ImageViewerCorrector

public ImageViewerCorrector()

ImageViewerCorrector

public ImageViewerCorrector(android.widget.ImageView imageView,
                            float maxScale)

Method Detail

getMaxScale

public float getMaxScale()

Returns the maximum allowed scale.

Returns:

setMaxScale

public void setMaxScale(float maxScale)

Sets the maximum allowed scale.

Parameters:

maxScale -

isMaxScaleRelative

public boolean isMaxScaleRelative()

Indicates whether the maximum scale should be relative to the inner fit scale.

Returns:

setMaxScaleRelative

public void setMaxScaleRelative(boolean maxScaleRelative)

Sets whether the maximum scale should be relative to the inner fit scale.

Parameters:

maxScaleRelative -

performAbsoluteCorrections

public void performAbsoluteCorrections()

Description copied from class: MatrixCorrector

Does corrections AFTER matrix operations have been applied.

This implementation only copies the values of the matrix into its float array values.

Overrides:

performAbsoluteCorrections in class MatrixCorrector

correctAbsolute

public float correctAbsolute(int vector,
                             float x)

Description copied from class: MatrixCorrector

*

Returns the corrected value of the given absolute vector.

Overrides:

correctAbsolute in class MatrixCorrector

Returns:

correctTranslation

public static final float correctTranslation(float translation,
                                             float viewDim,
                                             float imgDim)

Corrects the translation so that it does not exceed the allowed bounds.

Parameters:

translation -

viewDim -

imgDim -

Returns: