package org.qii.weiciyuan.support.lib;
import org.qii.weiciyuan.support.debug.AppLogger;
import org.qii.weiciyuan.support.utils.GlobalContext;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.os.Handler;
import android.os.Looper;
import android.text.TextUtils;
import android.util.AttributeSet;
import android.util.Log;
import android.widget.ImageView;
/**
* User: qii
* Date: 14-1-22
*/
public class BlurImageView extends ImageView {
private static int radius = 20;
private Thread blurThread;
private String url;
public BlurImageView(Context context) {
super(context);
}
public BlurImageView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public BlurImageView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
public void setOriImageUrl(String url) {
this.url = url;
}
@Override
public void setImageDrawable(final Drawable drawable) {
if (TextUtils.isEmpty(url)) {
return;
}
if (drawable instanceof BitmapDrawable) {
BitmapDrawable bitmapDrawable = (BitmapDrawable) drawable;
final Bitmap bitmap = bitmapDrawable.getBitmap();
if (bitmap != null) {
final Bitmap blurBitmap = GlobalContext.getInstance().getBitmapCache().get(url + "/blur");
if (blurBitmap == null) {
blurThread = new Thread(new Runnable() {
@Override
public void run() {
Drawable blurDrawable = null;
Bitmap createdBlurBitmap = null;
try {
createdBlurBitmap = fastBlur(bitmap, radius);
blurDrawable = new BitmapDrawable(getResources(),
createdBlurBitmap);
} catch (Exception ignored) {
ignored.printStackTrace();
AppLogger.v("Blur image failed");
}
if (Thread.currentThread().isInterrupted() || blurDrawable == null || createdBlurBitmap == null) {
return;
}
final Bitmap finalCreatedBlurBitmap = createdBlurBitmap;
final Drawable finalBlurDrawable = blurDrawable;
new Handler(Looper.getMainLooper()).post(new Runnable() {
@Override
public void run() {
GlobalContext.getInstance().getBitmapCache()
.put(url + "/blur", finalCreatedBlurBitmap);
BlurImageView.super.setImageDrawable(finalBlurDrawable);
}
});
}
});
blurThread.start();
} else {
final Drawable blurDrawable = new BitmapDrawable(getResources(),
blurBitmap);
BlurImageView.super.setImageDrawable(blurDrawable);
}
return;
}
}
super.setImageDrawable(drawable);
}
@Override
protected void onDetachedFromWindow() {
super.onDetachedFromWindow();
if (blurThread != null) {
blurThread.interrupt();
}
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
}
private Bitmap fastBlur(Bitmap sentBitmap, int radius) {
// on Android 4.4, some bitmaps will crash, fuck RenderScript
// if (Utility.isJB1()) {
// Bitmap bitmap = sentBitmap.copy(sentBitmap.getConfig(), true);
//
// final RenderScript rs = RenderScript.create(getContext());
// final Allocation input = Allocation
// .createFromBitmap(rs, sentBitmap, Allocation.MipmapControl.MIPMAP_NONE,
// Allocation.USAGE_SCRIPT);
// final Allocation output = Allocation.createTyped(rs, input.getType());
// final ScriptIntrinsicBlur script = ScriptIntrinsicBlur.create(rs, Element
// .U8_4(rs));
// script.setRadius(radius /* e.g. 3.f */);
// script.setInput(input);
// script.forEach(output);
// output.copyTo(bitmap);
// return bitmap;
// }
// Stack Blur v1.0 from
// http://www.quasimondo.com/StackBlurForCanvas/StackBlurDemo.html
//
// Java Author: Mario Klingemann <mario at quasimondo.com>
// http://incubator.quasimondo.com
// created Feburary 29, 2004
// Android port : Yahel Bouaziz <yahel at kayenko.com>
// 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 <mario@quasimondo.com>
Bitmap bitmap = sentBitmap.copy(sentBitmap.getConfig(), true);
if (radius < 1) {
return (null);
}
int w = bitmap.getWidth();
int h = bitmap.getHeight();
int[] pix = new int[w * h];
Log.e("pix", w + " " + h + " " + pix.length);
bitmap.getPixels(pix, 0, w, 0, 0, w, h);
int wm = w - 1;
int hm = h - 1;
int wh = w * h;
int div = radius + radius + 1;
int r[] = new int[wh];
int g[] = new int[wh];
int b[] = new int[wh];
int rsum, gsum, bsum, x, y, i, p, yp, yi, yw;
int vmin[] = new int[Math.max(w, h)];
int divsum = (div + 1) >> 1;
divsum *= divsum;
int dv[] = new int[256 * divsum];
for (i = 0; i < 256 * divsum; i++) {
dv[i] = (i / divsum);
}
yw = yi = 0;
int[][] stack = new int[div][3];
int stackpointer;
int stackstart;
int[] sir;
int rbs;
int r1 = radius + 1;
int routsum, goutsum, boutsum;
int rinsum, ginsum, binsum;
for (y = 0; y < h; y++) {
rinsum = ginsum = binsum = routsum = goutsum = boutsum = rsum = gsum = bsum = 0;
for (i = -radius; i <= radius; i++) {
p = pix[yi + Math.min(wm, Math.max(i, 0))];
sir = stack[i + radius];
sir[0] = (p & 0xff0000) >> 16;
sir[1] = (p & 0x00ff00) >> 8;
sir[2] = (p & 0x0000ff);
rbs = r1 - Math.abs(i);
rsum += sir[0] * rbs;
gsum += sir[1] * rbs;
bsum += sir[2] * rbs;
if (i > 0) {
rinsum += sir[0];
ginsum += sir[1];
binsum += sir[2];
} else {
routsum += sir[0];
goutsum += sir[1];
boutsum += sir[2];
}
}
stackpointer = radius;
for (x = 0; x < w; x++) {
r[yi] = dv[rsum];
g[yi] = dv[gsum];
b[yi] = dv[bsum];
rsum -= routsum;
gsum -= goutsum;
bsum -= boutsum;
stackstart = stackpointer - radius + div;
sir = stack[stackstart % div];
routsum -= sir[0];
goutsum -= sir[1];
boutsum -= sir[2];
if (y == 0) {
vmin[x] = Math.min(x + radius + 1, wm);
}
p = pix[yw + vmin[x]];
sir[0] = (p & 0xff0000) >> 16;
sir[1] = (p & 0x00ff00) >> 8;
sir[2] = (p & 0x0000ff);
rinsum += sir[0];
ginsum += sir[1];
binsum += sir[2];
rsum += rinsum;
gsum += ginsum;
bsum += binsum;
stackpointer = (stackpointer + 1) % div;
sir = stack[(stackpointer) % div];
routsum += sir[0];
goutsum += sir[1];
boutsum += sir[2];
rinsum -= sir[0];
ginsum -= sir[1];
binsum -= sir[2];
yi++;
}
yw += w;
}
for (x = 0; x < w; x++) {
rinsum = ginsum = binsum = routsum = goutsum = boutsum = rsum = gsum = bsum = 0;
yp = -radius * w;
for (i = -radius; i <= radius; i++) {
yi = Math.max(0, yp) + x;
sir = stack[i + radius];
sir[0] = r[yi];
sir[1] = g[yi];
sir[2] = b[yi];
rbs = r1 - Math.abs(i);
rsum += r[yi] * rbs;
gsum += g[yi] * rbs;
bsum += b[yi] * rbs;
if (i > 0) {
rinsum += sir[0];
ginsum += sir[1];
binsum += sir[2];
} else {
routsum += sir[0];
goutsum += sir[1];
boutsum += sir[2];
}
if (i < hm) {
yp += w;
}
}
yi = x;
stackpointer = radius;
for (y = 0; y < h; y++) {
// Preserve alpha channel: ( 0xff000000 & pix[yi] )
pix[yi] = (0xff000000 & pix[yi]) | (dv[rsum] << 16) | (dv[gsum] << 8) | dv[bsum];
rsum -= routsum;
gsum -= goutsum;
bsum -= boutsum;
stackstart = stackpointer - radius + div;
sir = stack[stackstart % div];
routsum -= sir[0];
goutsum -= sir[1];
boutsum -= sir[2];
if (x == 0) {
vmin[y] = Math.min(y + r1, hm) * w;
}
p = x + vmin[y];
sir[0] = r[p];
sir[1] = g[p];
sir[2] = b[p];
rinsum += sir[0];
ginsum += sir[1];
binsum += sir[2];
rsum += rinsum;
gsum += ginsum;
bsum += binsum;
stackpointer = (stackpointer + 1) % div;
sir = stack[stackpointer];
routsum += sir[0];
goutsum += sir[1];
boutsum += sir[2];
rinsum -= sir[0];
ginsum -= sir[1];
binsum -= sir[2];
yi += w;
}
}
Log.e("pix", w + " " + h + " " + pix.length);
bitmap.setPixels(pix, 0, w, 0, 0, w, h);
return (bitmap);
}
}