FaceOverlayView.java
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package com.huaheng.wms.facedete;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.PointF;
import android.graphics.RectF;
import android.util.DisplayMetrics;
import android.util.TypedValue;
import android.view.View;
import java.text.DecimalFormat;
/**
* 作者：created by meixi
* 邮箱：13164716840@163.com
* 日期：2018/8/29 15
*/
public class FaceOverlayView extends View {
private Paint mPaint;
private Paint mTextPaint;
private int mDisplayOrientation;
private int mOrientation;
private int previewWidth;
private int previewHeight;
private FaceResult[] mFaces;
private double fps;
private boolean isFront = false;
public FaceOverlayView(Context context) {
super(context);
initialize();
}
private void initialize() {
// We want a green box around the face:
DisplayMetrics metrics = getResources().getDisplayMetrics();
int stroke = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 2, metrics);
mPaint = new Paint();
mPaint.setAntiAlias(true);
mPaint.setDither(true);
mPaint.setColor(Color.GREEN);
mPaint.setStrokeWidth(stroke);
mPaint.setStyle(Paint.Style.STROKE);
mTextPaint = new Paint();
mTextPaint.setAntiAlias(true);
mTextPaint.setDither(true);
int size = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 15, metrics);
mTextPaint.setTextSize(size);
mTextPaint.setColor(Color.GREEN);
mTextPaint.setStyle(Paint.Style.FILL);
}
public void setFPS(double fps) {
this.fps = fps;
}
public void setFaces(FaceResult[] faces) {
mFaces = faces;
invalidate();
}
public void setOrientation(int orientation) {
mOrientation = orientation;
}
public void setDisplayOrientation(int displayOrientation) {
mDisplayOrientation = displayOrientation;
invalidate();
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
if (mFaces != null && mFaces.length > 0) {
float scaleX = (float) getWidth() / (float) previewWidth;
float scaleY = (float) getHeight() / (float) previewHeight;
switch (mDisplayOrientation) {
case 90:
case 270:
scaleX = (float) getWidth() / (float) previewHeight;
scaleY = (float) getHeight() / (float) previewWidth;
break;
}
canvas.save();
canvas.rotate(-mOrientation);
RectF rectF = new RectF();
for (FaceResult face : mFaces) {
PointF mid = new PointF();
face.getMidPoint(mid);
if (mid.x != 0.0f && mid.y != 0.0f) {
float eyesDis = face.eyesDistance();
rectF.set(new RectF(
(mid.x - eyesDis * 1.2f) * scaleX,
(mid.y - eyesDis * 0.65f) * scaleY,
(mid.x + eyesDis * 1.2f) * scaleX,
(mid.y + eyesDis * 1.75f) * scaleY));
if (isFront) {
float left = rectF.left;
float right = rectF.right;
rectF.left = getWidth() - right;
rectF.right = getWidth() - left;
}
canvas.drawRect(rectF, mPaint);
canvas.drawText("ID " + face.getId(), rectF.left, rectF.bottom + mTextPaint.getTextSize(), mTextPaint);
canvas.drawText("Confidence " + face.getConfidence(), rectF.left, rectF.bottom + mTextPaint.getTextSize() * 2, mTextPaint);
canvas.drawText("EyesDistance " + face.eyesDistance(), rectF.left, rectF.bottom + mTextPaint.getTextSize() * 3, mTextPaint);
}
}
canvas.restore();
}
DecimalFormat df2 = new DecimalFormat(".##");
canvas.drawText("Detected_Frame/s: " + df2.format(fps) + " @ " + previewWidth + "x" + previewHeight, mTextPaint.getTextSize(), mTextPaint.getTextSize(), mTextPaint);
}
public void setPreviewWidth(int previewWidth) {
this.previewWidth = previewWidth;
}
public void setPreviewHeight(int previewHeight) {
this.previewHeight = previewHeight;
}
public void setFront(boolean front) {
isFront = front;
}
}