Skip to content

Feature/legacy blur #6

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Closed
anhnd3005-infinity wants to merge 5 commits into from
Closed

Feature/legacy blur #6

Show file tree
Hide file tree
Changes from 3 commits
Commits
Show all changes
5 commits
Select commit Hold shift + click to select a range
bbf037e
feat: add support for Android N and above
anhnd3005-infinity Dec 9, 2025
44ce906
Add legacy blur tint fallback for API 24-32
anhnd3005-infinity Dec 9, 2025
8308e62
Add legacy blur tint fallback for API 24-32
anhnd3005-infinity Dec 9, 2025
b84b00c
Add legacy blur support for Android 24-32
anhnd3005-infinity Dec 10, 2025
d9d017d
feat: Add border width support and list example
anhnd3005-infinity Dec 12, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
7 changes: 7 additions & 0 deletions AndroidLiquidGlassView/src/main/java/com/qmdeve/liquidglass/LiquidGlass.java
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -34,6 +34,7 @@
import androidx.annotation.NonNull;

import com.qmdeve.liquidglass.impl.Impl;
import com.qmdeve.liquidglass.impl.LiquidGlassLegacyImpl;
import com.qmdeve.liquidglass.impl.LiquidGlassimpl;

import java.lang.ref.WeakReference;
Expand Down Expand Up @@ -94,6 +95,12 @@ public void init(ViewGroup target) {
addPreDrawListener();
requestLayout();
invalidate();
} else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
config.BLUR_RADIUS = 5f;
impl = new LiquidGlassLegacyImpl(this, target, config);
addPreDrawListener();
requestLayout();
invalidate();
} else {
removePreDrawListener();
}
Expand Down
211 changes: 211 additions & 0 deletions AndroidLiquidGlassView/src/main/java/com/qmdeve/liquidglass/impl/LiquidGlassLegacyImpl.java
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,211 @@
package com.qmdeve.liquidglass.impl;

import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.PorterDuff;
import android.graphics.RenderEffect;
import android.graphics.RenderNode;
import android.graphics.Shader;
import android.os.Build;
import android.view.View;

import androidx.annotation.NonNull;

import com.qmdeve.liquidglass.Config;

public final class LiquidGlassLegacyImpl implements Impl {
private final View host, target;
private final Config config;
private final Paint blurPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
private final Paint tintPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
private final int[] targetPos = new int[2];
private final int[] hostPos = new int[2];
private final RenderNode renderNode;
private Bitmap buffer;
private Bitmap blurredBuffer;

public LiquidGlassLegacyImpl(@NonNull View host, @NonNull View target, @NonNull Config config) {
this.host = host;
this.target = target;
this.config = config;
tintPaint.setStyle(Paint.Style.FILL);
renderNode = Build.VERSION.SDK_INT >= Build.VERSION_CODES.S ? new RenderNode("AndroidLiquidGlassViewLegacy") : null;
}

@Override
public void onSizeChanged(int w, int h) {
recreateBuffers(w, h);
if (renderNode != null) renderNode.setPosition(0, 0, w, h);
}

@Override
public void onPreDraw() {
captureTarget();
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.S) {
applyCpuBlur();
} else {
updateRenderNode();
}
}

@Override
public void draw(Canvas canvas) {
if (buffer == null) return;
float tintAlpha = config.TINT_ALPHA;
float tintRed = config.TINT_COLOR_RED;
float tintGreen = config.TINT_COLOR_GREEN;
float tintBlue = config.TINT_COLOR_BLUE;
tintPaint.setColor(Color.argb(clampColor(tintAlpha), clampColor(tintRed), clampColor(tintGreen), clampColor(tintBlue)));
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
if (renderNode != null) canvas.drawRenderNode(renderNode);
} else {
canvas.drawBitmap(blurredBuffer != null ? blurredBuffer : buffer, 0, 0, null);
}
if (tintAlpha > 0.001f) canvas.drawRect(0, 0, buffer.getWidth(), buffer.getHeight(), tintPaint);
}

@Override
public void dispose() {
recycleBuffer(buffer);
recycleBuffer(blurredBuffer);
}

private void recreateBuffers(int w, int h) {
recycleBuffer(buffer);
recycleBuffer(blurredBuffer);
if (w > 0 && h > 0) {
buffer = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);
blurredBuffer = Build.VERSION.SDK_INT < Build.VERSION_CODES.S ? Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888) : null;
}
}

private void captureTarget() {
if (buffer == null) return;
int width = target.getWidth();
int height = target.getHeight();
if (width == 0 || height == 0) return;
target.getLocationInWindow(targetPos);
host.getLocationInWindow(hostPos);
int dx = hostPos[0] - targetPos[0];
int dy = hostPos[1] - targetPos[1];
Canvas rec = new Canvas(buffer);
rec.drawColor(Color.TRANSPARENT, PorterDuff.Mode.CLEAR);
rec.save();
rec.translate(-dx, -dy);
target.draw(rec);
rec.restore();
}

private void applyCpuBlur() {
if (blurredBuffer == null || buffer == null) return;
copyBitmap(buffer, blurredBuffer);
int radius = Math.min(25, Math.max(0, Math.round(config.BLUR_RADIUS)));
if (radius == 0) return;
boxBlur(blurredBuffer, radius);
}

private void updateRenderNode() {
if (renderNode == null || buffer == null) return;
int w = buffer.getWidth();
int h = buffer.getHeight();
if (w == 0 || h == 0) return;
Canvas rec = renderNode.beginRecording(w, h);
rec.drawBitmap(buffer, 0, 0, blurPaint);
renderNode.endRecording();
float sigma = Math.max(0f, config.BLUR_RADIUS);
RenderEffect effect = sigma > 0.01f ? RenderEffect.createBlurEffect(sigma, sigma, Shader.TileMode.CLAMP) : null;
renderNode.setRenderEffect(effect);
}

private void boxBlur(Bitmap bmp, int radius) {
int w = bmp.getWidth();
int h = bmp.getHeight();
int[] pixels = new int[w * h];
bmp.getPixels(pixels, 0, w, 0, 0, w, h);
int[] temp = new int[w * h];
boxBlurPass(pixels, temp, w, h, radius);
boxBlurPass(temp, pixels, w, h, radius);
bmp.setPixels(pixels, 0, w, 0, 0, w, h);
}

private void boxBlurPass(int[] src, int[] dst, int w, int h, int radius) {
int div = radius * 2 + 1;
int sumR, sumG, sumB, idx, pix;
for (int y = 0; y < h; y++) {
sumR = sumG = sumB = 0;
idx = y * w;
for (int i = -radius; i <= radius; i++) {
pix = src[idx + clamp(i, 0, w - 1)];
sumR += (pix >> 16) & 0xFF;
sumG += (pix >> 8) & 0xFF;
sumB += pix & 0xFF;
}
for (int x = 0; x < w; x++) {
dst[idx + x] = (0xFF << 24) | ((sumR / div) << 16) | ((sumG / div) << 8) | (sumB / div);
int next = x + radius + 1;
int prev = x - radius;
if (next < w) {
pix = src[idx + next];
sumR += (pix >> 16) & 0xFF;
sumG += (pix >> 8) & 0xFF;
sumB += pix & 0xFF;
}
if (prev >= 0) {
pix = src[idx + prev];
sumR -= (pix >> 16) & 0xFF;
sumG -= (pix >> 8) & 0xFF;
sumB -= pix & 0xFF;
}
}
}
for (int x = 0; x < w; x++) {
sumR = sumG = sumB = 0;
idx = x;
for (int i = -radius; i <= radius; i++) {
pix = src[clamp(i, 0, h - 1) * w + x];
sumR += (pix >> 16) & 0xFF;
sumG += (pix >> 8) & 0xFF;
sumB += pix & 0xFF;
}
for (int y = 0; y < h; y++) {
dst[y * w + x] = (0xFF << 24) | ((sumR / div) << 16) | ((sumG / div) << 8) | (sumB / div);
int next = y + radius + 1;
int prev = y - radius;
if (next < h) {
pix = src[next * w + x];
sumR += (pix >> 16) & 0xFF;
sumG += (pix >> 8) & 0xFF;
sumB += pix & 0xFF;
}
if (prev >= 0) {
pix = src[prev * w + x];
sumR -= (pix >> 16) & 0xFF;
sumG -= (pix >> 8) & 0xFF;
sumB -= pix & 0xFF;
}
}
}
}

private int clamp(int v, int min, int max) {
return Math.max(min, Math.min(max, v));
}

private int clampColor(float c) {
return Math.max(0, Math.min(255, Math.round(c * 255f)));
}

private void recycleBuffer(Bitmap bmp) {
if (bmp != null && !bmp.isRecycled()) bmp.recycle();
}

private void copyBitmap(Bitmap src, Bitmap dst) {
if (src == null || dst == null) return;
Canvas c = new Canvas(dst);
c.drawColor(Color.TRANSPARENT, PorterDuff.Mode.CLEAR);
c.drawBitmap(src, 0, 0, null);
}
}