重构v2.0

lib/src/main/java/com/king/zxing/CameraScan.java

@@ -0,0 +1,189 @@
+package com.king.zxing;
+
+import android.content.Intent;
+import android.view.MotionEvent;
+import android.view.View;
+
+import com.google.zxing.Result;
+import com.king.zxing.analyze.Analyzer;
+import com.king.zxing.util.LogUtils;
+
+import androidx.annotation.Nullable;
+import androidx.camera.core.CameraSelector;
+
+import static com.king.zxing.CameraScan.*;
+
+/**
+ * @author <a href="mailto:jenly1314@gmail.com">Jenly</a>
+ */
+public abstract class CameraScan implements ICameraScan {
+
+    /**
+     * 默认触控误差值
+     */
+    private static final int DEVIATION = 6;
+
+    public static String SCAN_RESULT = "SCAN_RESULT";
+
+    /** A camera on the device facing the same direction as the device's screen. */
+    public static int LENS_FACING_FRONT = CameraSelector.LENS_FACING_FRONT;
+    /** A camera on the device facing the opposite direction as the device's screen. */
+    public static int LENS_FACING_BACK = CameraSelector.LENS_FACING_BACK;
+
+
+    /**
+     * 是否需要支持自动缩放
+     */
+    private boolean isNeedAutoZoom = true;
+
+    /**
+     * 是否需要支持触摸缩放
+     */
+    private boolean isNeedTouchZoom = true;
+
+    private float mOldDistance;
+
+
+    /**
+     * 设置是否需要支持触摸缩放
+     * @param needTouchZoom
+     * @return
+     */
+    public CameraScan setNeedTouchZoom(boolean needTouchZoom) {
+        isNeedTouchZoom = needTouchZoom;
+        return this;
+    }
+
+    /**
+     * 是否需要支持自动缩放
+     * @return
+     */
+    protected boolean isNeedAutoZoom() {
+        return isNeedAutoZoom;
+    }
+
+    /**
+     * 设置是否需要支持自动缩放
+     * @param needAutoZoom
+     * @return
+     */
+    public CameraScan setNeedAutoZoom(boolean needAutoZoom) {
+        isNeedAutoZoom = needAutoZoom;
+        return this;
+    }
+
+    protected boolean onTouchEvent(MotionEvent event) {
+        if(getCamera() != null && isNeedTouchZoom){
+            LogUtils.d("action:" + (event.getAction() & MotionEvent.ACTION_MASK));
+            if(event.getPointerCount() > 1) {
+                switch (event.getAction() & MotionEvent.ACTION_MASK) {//多点触控
+                    case MotionEvent.ACTION_POINTER_DOWN:
+                        mOldDistance = calcFingerSpacing(event);
+                        break;
+                    case MotionEvent.ACTION_MOVE:
+                        float newDistance = calcFingerSpacing(event);
+
+                        if (newDistance > mOldDistance + DEVIATION) {
+                            zoomIn();
+                        } else if (newDistance < mOldDistance - DEVIATION) {
+                            zoomOut();
+                        }
+                        mOldDistance = newDistance;
+                        break;
+                    case MotionEvent.ACTION_POINTER_UP:
+                    case MotionEvent.ACTION_UP:
+                        return false;
+                }
+
+            }
+            return true;
+        }
+        return false;
+    }
+
+    /**
+     * 计算两指间距离
+     * @param event
+     * @return
+     */
+    private float calcFingerSpacing(MotionEvent event) {
+        float x = event.getX(0) - event.getX(1);
+        float y = event.getY(0) - event.getY(1);
+        return (float) Math.sqrt(x * x + y * y);
+    }
+
+    /**
+     * 设置相机配置，请在{@link #startCamera()}之前调用
+     * @param cameraConfig
+     */
+    public abstract CameraScan setCameraConfig(CameraConfig cameraConfig);
+
+    /**
+     * 设置是否分析图像
+     * @param analyze
+     */
+    public abstract CameraScan setAnalyzeImage(boolean analyze);
+
+    /**
+     * 设置分析器
+     * @param analyzer
+     */
+    public abstract CameraScan setAnalyzer(Analyzer analyzer);
+
+    /**
+     * 设置手电筒是否开启
+     * @param torch
+     */
+    public abstract CameraScan enableTorch(boolean torch);
+
+    /**
+     * 手电筒是否开启
+     * @return
+     */
+    public abstract boolean isTorchEnabled();
+
+    /**
+     * 是否支持闪光灯
+     * @return
+     */
+    public abstract boolean hasFlashUnit();
+
+    /**
+     * 设置是否震动
+     * @param vibrate
+     */
+    public abstract CameraScan setVibrate(boolean vibrate);
+
+    /**
+     * 设置是否播放提示音
+     * @param playBeep
+     */
+    public abstract CameraScan setPlayBeep(boolean playBeep);
+
+    /**
+     * 设置扫码结果回调
+     * @param callback
+     */
+    public abstract CameraScan setOnScanResultCallback(OnScanResultCallback callback);
+
+    /**
+     * 绑定手电筒，绑定后可根据光线传感器，动态显示或隐藏手电筒
+     * @param v
+     */
+    public abstract CameraScan bindFlashlightView(@Nullable View v);
+
+
+    public interface OnScanResultCallback{
+        boolean onScanResultCallback(Result result);
+    }
+
+
+    @Nullable
+    public static String parseScanResult(Intent data){
+        if(data != null){
+            return data.getStringExtra(SCAN_RESULT);
+        }
+        return null;
+    }
+
+}