threads.share

Class PDFZoomImageView

java.lang.Object

AppCompatImageView

threads.share.PDFZoomImageView

public class PDFZoomImageView
extends AppCompatImageView

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	PDFZoomImageView.OnTouchImageViewListener

Constructor Summary

Constructors

Constructor and Description
PDFZoomImageView(android.content.Context context)
PDFZoomImageView(android.content.Context context, android.util.AttributeSet attrs)
PDFZoomImageView(android.content.Context context, android.util.AttributeSet attrs, int defStyle)

Method Summary

Modifier and Type	Method and Description
boolean	canScrollHorizontally(int direction)
boolean	canScrollHorizontallyFroyo(int direction)
float	getCurrentZoom() Get the current zoom.
float	getMaxZoom() Get the max zoom multiplier.
float	getMinZoom() Get the min zoom multiplier.
ScaleType	getScaleType()
android.graphics.PointF	getScrollPosition() Return the point at the center of the zoomed image.
android.graphics.RectF	getZoomedRect() Return a Rect representing the zoomed image.
boolean	isZoomed() Returns false if image is in initial, unzoomed state.
void	onConfigurationChanged(android.content.res.Configuration newConfig)
protected void	onDraw(android.graphics.Canvas canvas)
protected void	onMeasure(int widthMeasureSpec, int heightMeasureSpec)
void	onRestoreInstanceState(android.os.Parcelable state)
android.os.Parcelable	onSaveInstanceState()
void	resetZoom() Reset zoom and translation to initial state.
void	setImageBitmap(android.graphics.Bitmap bm)
void	setImageDrawable(android.graphics.drawable.Drawable drawable)
void	setImageResource(int resId)
void	setImageURI(android.net.Uri uri)
void	setMaxZoom(float max) Set the max zoom multiplier.
void	setMinZoom(float min) Set the min zoom multiplier.
void	setOnDoubleTapListener(android.view.GestureDetector.OnDoubleTapListener l)
void	setOnTouchImageViewListener(PDFZoomImageView.OnTouchImageViewListener l)
void	setOnTouchListener(OnTouchListener l)
void	setScaleType(ScaleType type)
void	setScrollPosition(float focusX, float focusY) Set the focus point of the zoomed image.
void	setZoom(float scale) Set zoom to the specified scale.
void	setZoom(float scale, float focusX, float focusY) Set zoom to the specified scale.
void	setZoom(float scale, float focusX, float focusY, ScaleType scaleType) Set zoom to the specified scale.
void	setZoom(PDFZoomImageView img)

Methods inherited from class java.lang.Object

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

Constructor Detail

PDFZoomImageView

public PDFZoomImageView(android.content.Context context)

PDFZoomImageView

public PDFZoomImageView(android.content.Context context,
                        android.util.AttributeSet attrs)

PDFZoomImageView

public PDFZoomImageView(android.content.Context context,
                        android.util.AttributeSet attrs,
                        int defStyle)

Method Detail

setOnTouchListener

public void setOnTouchListener(OnTouchListener l)

setOnTouchImageViewListener

public void setOnTouchImageViewListener(PDFZoomImageView.OnTouchImageViewListener l)

setOnDoubleTapListener

public void setOnDoubleTapListener(android.view.GestureDetector.OnDoubleTapListener l)

setImageResource

public void setImageResource(int resId)

setImageBitmap

public void setImageBitmap(android.graphics.Bitmap bm)

setImageDrawable

public void setImageDrawable(android.graphics.drawable.Drawable drawable)

setImageURI

public void setImageURI(android.net.Uri uri)

getScaleType

public ScaleType getScaleType()

setScaleType

public void setScaleType(ScaleType type)

isZoomed

public boolean isZoomed()

Returns false if image is in initial, unzoomed state. False, otherwise.

Returns:

true if image is zoomed

getZoomedRect

public android.graphics.RectF getZoomedRect()

Return a Rect representing the zoomed image.

Returns:

rect representing zoomed image

onSaveInstanceState

public android.os.Parcelable onSaveInstanceState()

onRestoreInstanceState

public void onRestoreInstanceState(android.os.Parcelable state)

onDraw

protected void onDraw(android.graphics.Canvas canvas)

onConfigurationChanged

public void onConfigurationChanged(android.content.res.Configuration newConfig)

getMaxZoom

public float getMaxZoom()

Get the max zoom multiplier.

Returns:

max zoom multiplier.

setMaxZoom

public void setMaxZoom(float max)

Set the max zoom multiplier. Default value: 3.

Parameters:

max - max zoom multiplier.

getMinZoom

public float getMinZoom()

Get the min zoom multiplier.

Returns:

min zoom multiplier.

setMinZoom

public void setMinZoom(float min)

Set the min zoom multiplier. Default value: 1.

Parameters:

min - min zoom multiplier.

getCurrentZoom

public float getCurrentZoom()

Get the current zoom. This is the zoom relative to the initial scale, not the original resource.

Returns:

current zoom multiplier.

resetZoom

public void resetZoom()

Reset zoom and translation to initial state.

setZoom

public void setZoom(float scale)

Set zoom to the specified scale. Image will be centered by default.

Parameters:

scale -

setZoom

public void setZoom(float scale,
                    float focusX,
                    float focusY)

Set zoom to the specified scale. Image will be centered around the point (focusX, focusY). These floats range from 0 to 1 and denote the focus point as a fraction from the left and top of the view. For example, the top left corner of the image would be (0, 0). And the bottom right corner would be (1, 1).

Parameters:

scale -

focusX -

focusY -

setZoom

public void setZoom(float scale,
                    float focusX,
                    float focusY,
                    ScaleType scaleType)

Set zoom to the specified scale. Image will be centered around the point (focusX, focusY). These floats range from 0 to 1 and denote the focus point as a fraction from the left and top of the view. For example, the top left corner of the image would be (0, 0). And the bottom right corner would be (1, 1).

Parameters:

scale -

focusX -

focusY -

scaleType -

setZoom

public void setZoom(PDFZoomImageView img)

getScrollPosition

public android.graphics.PointF getScrollPosition()

Return the point at the center of the zoomed image. The PointF coordinates range in value between 0 and 1 and the focus point is denoted as a fraction from the left and top of the view. For example, the top left corner of the image would be (0, 0). And the bottom right corner would be (1, 1).

Returns:

PointF representing the scroll position of the zoomed image.

setScrollPosition

public void setScrollPosition(float focusX,
                              float focusY)

Set the focus point of the zoomed image. The focus points are denoted as a fraction from the left and top of the view. The focus points can range in value between 0 and 1.

Parameters:

focusX -

focusY -

onMeasure

protected void onMeasure(int widthMeasureSpec,
                         int heightMeasureSpec)

canScrollHorizontallyFroyo

public boolean canScrollHorizontallyFroyo(int direction)

canScrollHorizontally

public boolean canScrollHorizontally(int direction)