505 lines
16 KiB
Java
505 lines
16 KiB
Java
package com.king.zxing;
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import android.app.Activity;
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import android.content.Context;
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import android.content.Intent;
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import android.util.DisplayMetrics;
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import android.view.MotionEvent;
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import android.view.ScaleGestureDetector;
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import android.view.View;
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import com.google.common.util.concurrent.ListenableFuture;
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import com.google.zxing.BarcodeFormat;
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import com.google.zxing.Result;
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import com.google.zxing.ResultPoint;
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import com.google.zxing.common.detector.MathUtils;
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import com.king.zxing.analyze.Analyzer;
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import com.king.zxing.analyze.MultiFormatAnalyzer;
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import com.king.zxing.config.CameraConfig;
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import com.king.zxing.manager.AmbientLightManager;
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import com.king.zxing.manager.BeepManager;
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import com.king.zxing.util.LogUtils;
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import java.util.concurrent.Executors;
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import androidx.annotation.FloatRange;
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import androidx.annotation.NonNull;
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import androidx.annotation.Nullable;
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import androidx.camera.core.Camera;
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import androidx.camera.core.CameraSelector;
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import androidx.camera.core.FocusMeteringAction;
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import androidx.camera.core.ImageAnalysis;
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import androidx.camera.core.MeteringPoint;
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import androidx.camera.core.Preview;
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import androidx.camera.core.TorchState;
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import androidx.camera.core.ZoomState;
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import androidx.camera.lifecycle.ProcessCameraProvider;
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import androidx.camera.view.PreviewView;
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import androidx.core.content.ContextCompat;
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import androidx.fragment.app.Fragment;
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import androidx.fragment.app.FragmentActivity;
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import androidx.lifecycle.LifecycleOwner;
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import androidx.lifecycle.MutableLiveData;
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/**
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* @author <a href="mailto:jenly1314@gmail.com">Jenly</a>
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*/
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public class DefaultCameraScan extends CameraScan {
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/**
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* Defines the maximum duration in milliseconds between a touch pad
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* touch and release for a given touch to be considered a tap (click) as
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* opposed to a hover movement gesture.
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*/
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private static final int HOVER_TAP_TIMEOUT = 150;
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/**
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* Defines the maximum distance in pixels that a touch pad touch can move
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* before being released for it to be considered a tap (click) as opposed
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* to a hover movement gesture.
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*/
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private static final int HOVER_TAP_SLOP = 20;
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private FragmentActivity mFragmentActivity;
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private Context mContext;
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private LifecycleOwner mLifecycleOwner;
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private PreviewView mPreviewView;
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private ListenableFuture<ProcessCameraProvider> mCameraProviderFuture;
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private Camera mCamera;
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private CameraConfig mCameraConfig;
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private Analyzer mAnalyzer;
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/**
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* 是否分析
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*/
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private volatile boolean isAnalyze = true;
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/**
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* 是否已经分析出结果
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*/
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private volatile boolean isAnalyzeResult;
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private View flashlightView;
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private MutableLiveData<Result> mResultLiveData;
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private OnScanResultCallback mOnScanResultCallback;
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private BeepManager mBeepManager;
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private AmbientLightManager mAmbientLightManager;
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private int mOrientation;
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private int mScreenWidth;
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private int mScreenHeight;
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private long mLastAutoZoomTime;
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private long mLastHoveTapTime;
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private boolean isClickTap;
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private float mDownX;
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private float mDownY;
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public DefaultCameraScan(@NonNull FragmentActivity activity,@NonNull PreviewView previewView){
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this.mFragmentActivity = activity;
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this.mLifecycleOwner = activity;
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this.mContext = activity;
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this.mPreviewView = previewView;
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initData();
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}
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public DefaultCameraScan(@NonNull Fragment fragment,@NonNull PreviewView previewView){
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this.mFragmentActivity = fragment.getActivity();
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this.mLifecycleOwner = fragment;
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this.mContext = fragment.getContext();
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this.mPreviewView = previewView;
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initData();
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}
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private ScaleGestureDetector.OnScaleGestureListener mOnScaleGestureListener = new ScaleGestureDetector.SimpleOnScaleGestureListener(){
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@Override
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public boolean onScale(ScaleGestureDetector detector) {
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float scale = detector.getScaleFactor();
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if(mCamera != null){
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float ratio = mCamera.getCameraInfo().getZoomState().getValue().getZoomRatio();
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zoomTo(ratio * scale);
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}
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return true;
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}
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};
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private void initData(){
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mResultLiveData = new MutableLiveData<>();
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mResultLiveData.observe(mLifecycleOwner, result -> {
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if(result != null){
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handleAnalyzeResult(result);
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}else if(mOnScanResultCallback != null){
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mOnScanResultCallback.onScanResultFailure();
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}
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});
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mOrientation = mContext.getResources().getConfiguration().orientation;
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ScaleGestureDetector scaleGestureDetector = new ScaleGestureDetector(mContext, mOnScaleGestureListener);
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mPreviewView.setOnTouchListener((v, event) -> {
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handlePreviewViewClickTap(event);
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if(isNeedTouchZoom()){
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return scaleGestureDetector.onTouchEvent(event);
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}
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return false;
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});
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DisplayMetrics displayMetrics = mContext.getResources().getDisplayMetrics();
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mScreenWidth = displayMetrics.widthPixels;
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mScreenHeight = displayMetrics.heightPixels;
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LogUtils.d(String.format("displayMetrics:%dx%d",mScreenWidth,mScreenHeight));
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mBeepManager = new BeepManager(mContext);
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mAmbientLightManager = new AmbientLightManager(mContext);
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if(mAmbientLightManager != null){
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mAmbientLightManager.register();
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mAmbientLightManager.setOnLightSensorEventListener((dark, lightLux) -> {
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if(flashlightView != null){
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if(dark){
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if(flashlightView.getVisibility() != View.VISIBLE){
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flashlightView.setVisibility(View.VISIBLE);
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flashlightView.setSelected(isTorchEnabled());
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}
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}else if(flashlightView.getVisibility() == View.VISIBLE && !isTorchEnabled()){
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flashlightView.setVisibility(View.INVISIBLE);
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flashlightView.setSelected(false);
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}
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}
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});
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}
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}
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private void handlePreviewViewClickTap(MotionEvent event){
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if(event.getPointerCount() == 1){
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switch (event.getAction()){
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case MotionEvent.ACTION_DOWN:
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isClickTap = true;
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mDownX = event.getX();
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mDownY = event.getY();
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mLastHoveTapTime = System.currentTimeMillis();
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break;
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case MotionEvent.ACTION_MOVE:
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isClickTap = MathUtils.distance(mDownX,mDownY,event.getX(),event.getY()) < HOVER_TAP_SLOP;
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break;
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case MotionEvent.ACTION_UP:
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if(isClickTap && mLastHoveTapTime + HOVER_TAP_TIMEOUT > System.currentTimeMillis()){
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startFocusAndMetering(event.getX(),event.getY());
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}
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break;
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}
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}
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}
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private void startFocusAndMetering(float x, float y){
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if(mCamera != null){
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LogUtils.d("startFocusAndMetering:" + x + "," + y);
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MeteringPoint point = mPreviewView.getMeteringPointFactory().createPoint(x,y);
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mCamera.getCameraControl().startFocusAndMetering(new FocusMeteringAction.Builder(point).build());
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}
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}
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private void initConfig(){
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if(mCameraConfig == null){
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mCameraConfig = new CameraConfig();
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}
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if(mAnalyzer == null){
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mAnalyzer = new MultiFormatAnalyzer();
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}
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}
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@Override
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public CameraScan setCameraConfig(CameraConfig cameraConfig) {
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if(cameraConfig != null){
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this.mCameraConfig = cameraConfig;
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}
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return this;
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}
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@Override
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public void startCamera(){
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initConfig();
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mCameraProviderFuture = ProcessCameraProvider.getInstance(mContext);
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mCameraProviderFuture.addListener(() -> {
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try{
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Preview preview = mCameraConfig.options(new Preview.Builder());
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//相机选择器
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CameraSelector cameraSelector = mCameraConfig.options(new CameraSelector.Builder());
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//设置SurfaceProvider
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preview.setSurfaceProvider(mPreviewView.getSurfaceProvider());
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//图像分析
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ImageAnalysis imageAnalysis = mCameraConfig.options(new ImageAnalysis.Builder()
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.setBackpressureStrategy(ImageAnalysis.STRATEGY_KEEP_ONLY_LATEST));
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imageAnalysis.setAnalyzer(Executors.newSingleThreadExecutor(), image -> {
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if(isAnalyze && !isAnalyzeResult && mAnalyzer != null){
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Result result = mAnalyzer.analyze(image,mOrientation);
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mResultLiveData.postValue(result);
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}
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image.close();
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});
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if(mCamera != null){
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mCameraProviderFuture.get().unbindAll();
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}
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//绑定到生命周期
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mCamera = mCameraProviderFuture.get().bindToLifecycle(mLifecycleOwner, cameraSelector, preview, imageAnalysis);
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}catch (Exception e){
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LogUtils.e(e);
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}
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},ContextCompat.getMainExecutor(mContext));
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}
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/**
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* 处理分析结果
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* @param result
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*/
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private synchronized void handleAnalyzeResult(Result result){
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if(isAnalyzeResult || !isAnalyze){
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return;
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}
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isAnalyzeResult = true;
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if(mBeepManager != null){
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mBeepManager.playBeepSoundAndVibrate();
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}
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if(result.getBarcodeFormat() == BarcodeFormat.QR_CODE && isNeedAutoZoom() && mLastAutoZoomTime + 100 < System.currentTimeMillis()){
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ResultPoint[] points = result.getResultPoints();
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if(points != null && points.length >= 2){
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float distance1 = ResultPoint.distance(points[0],points[1]);
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float maxDistance = distance1;
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if(points.length >= 3){
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float distance2 = ResultPoint.distance(points[1],points[2]);
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float distance3 = ResultPoint.distance(points[0],points[2]);
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maxDistance = Math.max(Math.max(distance1,distance2),distance3);
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}
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if(handleAutoZoom((int)maxDistance,result)){
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return;
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}
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}
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}
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scanResultCallback(result);
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}
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private boolean handleAutoZoom(int distance,Result result){
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int size = Math.min(mScreenWidth,mScreenHeight);
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if(distance * 4 < size){
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mLastAutoZoomTime = System.currentTimeMillis();
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zoomIn();
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scanResultCallback(result);
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return true;
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}
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return false;
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}
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private void scanResultCallback(Result result){
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if(mOnScanResultCallback != null && mOnScanResultCallback.onScanResultCallback(result)){
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/*
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* 如果拦截了结果，则重置分析结果状态，并当isAnalyze为true时，默认会继续分析图像（也就是连扫）。
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* 如果只是想拦截扫码结果回调，并不想继续分析图像（不想连扫），请在拦截扫码逻辑处通过调用
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* setAnalyzeImage(false)，因为setAnalyzeImage方法能动态控制是否继续分析图像。
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*/
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isAnalyzeResult = false;
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return;
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}
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if(mFragmentActivity != null){
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Intent intent = new Intent();
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intent.putExtra(SCAN_RESULT,result.getText());
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mFragmentActivity.setResult(Activity.RESULT_OK,intent);
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mFragmentActivity.finish();
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}
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}
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@Override
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public void stopCamera(){
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if(mCameraProviderFuture != null){
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try {
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mCameraProviderFuture.get().unbindAll();
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}catch (Exception e){
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LogUtils.e(e);
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}
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}
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}
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@Override
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public CameraScan setAnalyzeImage(boolean analyze) {
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isAnalyze = analyze;
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return this;
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}
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@Override
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public CameraScan setAnalyzer(Analyzer analyzer) {
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mAnalyzer = analyzer;
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return this;
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}
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@Override
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public void zoomIn(){
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if(mCamera != null){
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float ratio = mCamera.getCameraInfo().getZoomState().getValue().getZoomRatio() + 0.1f;
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float maxRatio = mCamera.getCameraInfo().getZoomState().getValue().getMaxZoomRatio();
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if(ratio <= maxRatio){
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mCamera.getCameraControl().setZoomRatio(ratio);
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}
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}
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}
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@Override
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public void zoomOut(){
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if(mCamera != null){
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float ratio = mCamera.getCameraInfo().getZoomState().getValue().getZoomRatio() - 0.1f;
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float minRatio = mCamera.getCameraInfo().getZoomState().getValue().getMinZoomRatio();
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if(ratio >= minRatio){
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mCamera.getCameraControl().setZoomRatio(ratio);
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}
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}
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}
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@Override
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public void zoomTo(float ratio) {
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if(mCamera != null){
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ZoomState zoomState = mCamera.getCameraInfo().getZoomState().getValue();
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float maxRatio = zoomState.getMaxZoomRatio();
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float minRatio = zoomState.getMinZoomRatio();
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float zoom = Math.max(Math.min(ratio,maxRatio),minRatio);
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mCamera.getCameraControl().setZoomRatio(zoom);
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}
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}
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@Override
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public void lineZoomIn() {
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if(mCamera != null){
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float zoom = mCamera.getCameraInfo().getZoomState().getValue().getLinearZoom() + 0.1f;
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if(zoom <= 1f){
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mCamera.getCameraControl().setLinearZoom(zoom);
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}
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}
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}
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@Override
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public void lineZoomOut() {
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if(mCamera != null){
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float zoom = mCamera.getCameraInfo().getZoomState().getValue().getLinearZoom() - 0.1f;
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if(zoom >= 0f){
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mCamera.getCameraControl().setLinearZoom(zoom);
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}
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}
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}
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@Override
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public void lineZoomTo(@FloatRange(from = 0.0,to = 1.0) float linearZoom) {
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if(mCamera != null){
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mCamera.getCameraControl().setLinearZoom(linearZoom);
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}
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}
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@Override
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public void enableTorch(boolean torch) {
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if(mCamera != null && hasFlashUnit()){
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mCamera.getCameraControl().enableTorch(torch);
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}
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}
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@Override
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public boolean isTorchEnabled() {
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if(mCamera != null){
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return mCamera.getCameraInfo().getTorchState().getValue() == TorchState.ON;
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}
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return false;
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}
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/**
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* 是否支持闪光灯
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* @return
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*/
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@Override
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public boolean hasFlashUnit(){
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if(mCamera != null){
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return mCamera.getCameraInfo().hasFlashUnit();
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}
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return false;
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}
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@Override
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public CameraScan setVibrate(boolean vibrate) {
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if(mBeepManager != null){
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mBeepManager.setVibrate(vibrate);
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}
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return this;
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}
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@Override
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public CameraScan setPlayBeep(boolean playBeep) {
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if(mBeepManager != null){
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mBeepManager.setPlayBeep(playBeep);
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}
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return this;
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}
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@Override
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public CameraScan setOnScanResultCallback(OnScanResultCallback callback) {
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this.mOnScanResultCallback = callback;
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return this;
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}
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@Nullable
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@Override
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public Camera getCamera(){
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return mCamera;
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}
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@Override
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public void release() {
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isAnalyze = false;
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flashlightView = null;
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if(mAmbientLightManager != null){
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mAmbientLightManager.unregister();
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}
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if(mBeepManager != null){
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mBeepManager.close();
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}
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stopCamera();
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}
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@Override
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public CameraScan bindFlashlightView(@Nullable View v) {
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flashlightView = v;
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if(mAmbientLightManager != null){
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mAmbientLightManager.setLightSensorEnabled(v != null);
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}
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return this;
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}
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public CameraScan setDarkLightLux(float lightLux){
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if(mAmbientLightManager != null){
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mAmbientLightManager.setDarkLightLux(lightLux);
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}
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return this;
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}
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public CameraScan setBrightLightLux(float lightLux){
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if(mAmbientLightManager != null){
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mAmbientLightManager.setBrightLightLux(lightLux);
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}
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return this;
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}
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}
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