company.tap.gosellapi.internal.utils

Class BlurDrawable

java.lang.Object

android.graphics.drawable.Drawable

company.tap.gosellapi.internal.utils.BlurDrawable

public class BlurDrawable
extends android.graphics.drawable.Drawable

A drawable that draws the target view as blurred using fast blur

TODO:we might use setBounds() to draw only part a of the target view

Created by 10uR on 24.5.2014.

Nested Class Summary

Nested classes/interfaces inherited from class android.graphics.drawable.Drawable

android.graphics.drawable.Drawable.Callback, android.graphics.drawable.Drawable.ConstantState

Field Summary

Fields

Modifier and Type	Field and Description
private android.graphics.Bitmap	blurred
private android.graphics.Paint	paint
private int	radius
private java.lang.ref.WeakReference<android.view.View>	targetRef

Constructor Summary

Constructors

Constructor and Description
BlurDrawable(android.view.View target) Instantiates a new Blur drawable.
BlurDrawable(android.view.View target, int radius) Instantiates a new Blur drawable.

Method Summary

Modifier and Type	Method and Description
void	draw(android.graphics.Canvas canvas)
private static android.graphics.Bitmap	fastBlur(android.graphics.Bitmap sentBitmap, int radius) from https://stackoverflow.com/a/10028267/3133545 Stack Blur v1.0 from http://www.quasimondo.com/StackBlurForCanvas/StackBlurDemo.html Java Author: Mario Klingemann http://incubator.quasimondo.com created Feburary 29, 2004 Android port : Yahel Bouaziz http://www.kayenko.com ported april 5th, 2012 This is a compromise between Gaussian Blur and Box blur It creates much better looking blurs than Box Blur, but is 7x faster than my Gaussian Blur implementation.
int	getOpacity()
int	getRadius() Gets radius.
void	setAlpha(int alpha)
void	setColorFilter(android.graphics.ColorFilter cf)
void	setRadius(int radius) Set the bluring radius that will be applied to target view's bitmap

Methods inherited from class android.graphics.drawable.Drawable

applyTheme, canApplyTheme, clearColorFilter, copyBounds, copyBounds, createFromPath, createFromResourceStream, createFromResourceStream, createFromStream, createFromXml, createFromXml, createFromXmlInner, createFromXmlInner, getAlpha, getBounds, getCallback, getChangingConfigurations, getColorFilter, getConstantState, getCurrent, getDirtyBounds, getHotspotBounds, getIntrinsicHeight, getIntrinsicWidth, getLayoutDirection, getLevel, getMinimumHeight, getMinimumWidth, getOutline, getPadding, getState, getTransparentRegion, inflate, inflate, invalidateSelf, isAutoMirrored, isFilterBitmap, isStateful, isVisible, jumpToCurrentState, mutate, onBoundsChange, onLayoutDirectionChanged, onLevelChange, onStateChange, resolveOpacity, scheduleSelf, setAutoMirrored, setBounds, setBounds, setCallback, setChangingConfigurations, setColorFilter, setDither, setFilterBitmap, setHotspot, setHotspotBounds, setLayoutDirection, setLevel, setState, setTint, setTintList, setTintMode, setVisible, unscheduleSelf

Methods inherited from class java.lang.Object

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

Field Detail

targetRef

private java.lang.ref.WeakReference<android.view.View> targetRef

blurred

private android.graphics.Bitmap blurred

paint

private android.graphics.Paint paint

radius

private int radius

Constructor Detail

BlurDrawable

public BlurDrawable(android.view.View target)

Instantiates a new Blur drawable.

Parameters:

target - the target

BlurDrawable

public BlurDrawable(android.view.View target,
                    int radius)

Instantiates a new Blur drawable.

Parameters:

target - the target

radius - the radius

Method Detail

draw

public void draw(android.graphics.Canvas canvas)

Specified by:

draw in class android.graphics.drawable.Drawable

setRadius

public void setRadius(int radius)

Set the bluring radius that will be applied to target view's bitmap

Parameters:

radius - should be 0-100

getRadius

public int getRadius()

Gets radius.

Returns:

the radius

setAlpha

public void setAlpha(int alpha)

Specified by:

setAlpha in class android.graphics.drawable.Drawable

setColorFilter

public void setColorFilter(android.graphics.ColorFilter cf)

Specified by:

setColorFilter in class android.graphics.drawable.Drawable

getOpacity

public int getOpacity()

Specified by:

getOpacity in class android.graphics.drawable.Drawable

fastBlur

private static android.graphics.Bitmap fastBlur(android.graphics.Bitmap sentBitmap,
                                                int radius)

from https://stackoverflow.com/a/10028267/3133545

Stack Blur v1.0 from http://www.quasimondo.com/StackBlurForCanvas/StackBlurDemo.html

Java Author: Mario Klingemann http://incubator.quasimondo.com created Feburary 29, 2004 Android port : Yahel Bouaziz http://www.kayenko.com ported april 5th, 2012

This is a compromise between Gaussian Blur and Box blur It creates much better looking blurs than Box Blur, but is 7x faster than my Gaussian Blur implementation.

I called it Stack Blur because this describes best how this filter works internally: it creates a kind of moving stack of colors whilst scanning through the image. Thereby it just has to add one new block of color to the right side of the stack and remove the leftmost color. The remaining colors on the topmost layer of the stack are either added on or reduced by one, depending on if they are on the right or on the left side of the stack.

If you are using this algorithm in your code please add the following line:

Stack Blur Algorithm by Mario Klingemann