StallDualScreen/app/src/main/java/com/sw/dualscreen/view/CustomImageView.java

package com.sw.dualscreen.view;

import android.animation.ValueAnimator;
import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.AlphaAnimation;

import androidx.appcompat.content.res.AppCompatResources;

import com.sw.dualscreen.R;
import com.sw.plate.utils.AppUtil;

import timber.log.Timber;

/**
 * 自定义柱状图
 */
public class CustomImageView extends androidx.appcompat.widget.AppCompatImageView {
    private AlphaAnimation alphaAnimation;
    private String textToDraw;
    private Paint mPaint;
    private int mTextSize = dpToPixels(26);
    /**
     * 最大高度
     */
//    private static final int MAX_HEIGHT = 280;
    private static final int MAX_HEIGHT = 250;

    private boolean isDrawText = false;
//    private Drawable bigRedDrawable;
//    private Drawable bigGreenDrawable;
//    private Drawable redDrawable;
//    private Drawable greenDrawable;

    public CustomImageView(Context context) {
        super(context);
        init(context);
    }

    public CustomImageView(Context context, AttributeSet attrs) {
        super(context, attrs);
        init(context);
    }

    public CustomImageView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init(context);
    }

    @SuppressLint("UseCompatLoadingForDrawables")
    private void init(Context context) {
        textToDraw = "超标";
        mPaint = new Paint();//Paint.ANTI_ALIAS_FLAG
        mPaint.setColor(Color.WHITE); // Set your desired color
        mPaint.setTextSize(mTextSize); // Set your desired text size
        mPaint.setAntiAlias(true);
//        bigRedDrawable = context.getDrawable(R.drawable.img_big_red_column);
//        bigGreenDrawable = context.getDrawable(R.drawable.img_big_green_column);
//        redDrawable = context.getDrawable(R.drawable.img_red_column);
//        greenDrawable = context.getDrawable(R.drawable.img_green_column);
//        Typeface typeface = getResources().getFont(R.font.dakai);
//        Typeface typeface = Typeface.create(Typeface.createFromAsset(getContext().getAssets(), "fonts/dakai.TTF"),
//                Typeface.BOLD); // 创建Typeface
//        mPaint.setTypeface(typeface); // 设置Paint的Typeface
    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        if (isDrawText) {
            Rect mBounds = new Rect();
            mPaint.getTextBounds(textToDraw, 0, textToDraw.length(), mBounds);
            mPaint.setShadowLayer(5, 2, 2, Color.GRAY);
            float textWidth = mBounds.width();
            Paint.FontMetricsInt fontMetrics = mPaint.getFontMetricsInt();
            float fontHeight = fontMetrics.bottom - fontMetrics.top;
            //设置文字居中
            float textBaseY = getHeight() - (getHeight() - fontHeight) / 2 - fontMetrics.bottom;
//            textBaseY = 26;
            canvas.drawText(textToDraw, (getWidth() - textWidth) / 2, textBaseY, mPaint);
        }
    }

//    /**
//     * 设置图片
//     *
//     * @param isBig  大图
//     * @param isMore 是否超过
//     */
//    public void setImageDrawable(boolean isBig, boolean isMore) {
//        if (isBig) {
//            setImageDrawable(isMore ? bigRedDrawable : bigGreenDrawable);
//        } else {
//            setImageDrawable(isMore ? redDrawable : greenDrawable);
//        }
//    }
//
//    public void setImageDrawable2(boolean isBig, Boolean isRed) {
//        if (isBig) {
//            setImageDrawable(isRed ? bigRedDrawable : bigGreenDrawable);
//        } else {
//            setImageDrawable(isRed ? redDrawable : greenDrawable);
//        }
//    }

    public void setCustomHeightPercent(float percent, boolean isAnimation) {
        Timber.d("setCustomHeightPercent percent = %s", percent);
        if (percent <= 0) {
            percent = 0f;
        }
        setCustomHeight((int) (percent * MAX_HEIGHT), false);
    }

    // 用于设置自定义高度的方法
    public void setCustomHeight(int height, boolean isAnimation) {
        Timber.d("setCustomHeight height = %s", height);

        setVisibility(height == 0 ? View.GONE : VISIBLE);
        if (height > MAX_HEIGHT) {
            height = MAX_HEIGHT;
        }
        ViewGroup.LayoutParams layoutParams = getLayoutParams();
        int height1 = layoutParams.height;
        if (height1 != height) {
            if (isAnimation) {
                ValueAnimator animator = ValueAnimator.ofInt(height1, height);
                animator.addUpdateListener(animation -> {
                    // 更新视图的高度
                    int val = (Integer) animation.getAnimatedValue();
                    ViewGroup.LayoutParams params = getLayoutParams();
                    params.height = dpToPixels(val);
                    setLayoutParams(params);
                });
                animator.setDuration(100); // 动画持续时间500毫秒
                animator.start(); // 开始动画
            } else {
                if (layoutParams == null) {
                    layoutParams = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, height);
                } else {
                    layoutParams.height = dpToPixels(height);
                }
                setLayoutParams(layoutParams);
            }

        }
    }

    private boolean isStartAlphaAnimation = false;

    public void startAlphaAnimation() {
        if (!isStartAlphaAnimation) {
            alphaAnimation = new AlphaAnimation(1.0f, 0.2f); // 从不透明渐变到完全透明
            alphaAnimation.setDuration(420); // 设置动画持续时间，单位为毫秒
            alphaAnimation.setRepeatCount(AlphaAnimation.INFINITE); // 设置动画重复次数为无限（可选）
            startAnimation(alphaAnimation);
            isStartAlphaAnimation = true;
        }
    }

    public void cancelAlphaAnimation() {
        if (alphaAnimation != null)
            alphaAnimation.cancel();
        isStartAlphaAnimation = false;
    }

    public void showText(String textToDraw) {
        if (!AppUtil.isEmpty(textToDraw)) {
            this.textToDraw = textToDraw;
        }
        isDrawText = true;
    }

    public void hideText() {
        isDrawText = false;
    }

    private int dpToPixels(int dp) {
        float scale = getResources().getDisplayMetrics().density;
        return (int) (dp * scale + 0.5f);
    }

    public void setImageDrawable(boolean isBigImage, int index) {
        int myIndex = index;
        if (index < 0) {
            myIndex = 0;
        }else if (index > 4) {
            myIndex = 4;
        }
        if (isBigImage) {
            //使用大图bigImgArr
            setImageDrawable(AppCompatResources.getDrawable(getContext(), bigImgArr[myIndex]));
            return;
        }
        //使用小图smallImgArr
        setImageDrawable(AppCompatResources.getDrawable(getContext(), smallImgArr[myIndex]));
    }

    private static final Integer[] bigImgArr = new Integer[]{
            R.drawable.ic_gray_big,
            R.drawable.ic_green_big,
            R.drawable.ic_yellow_big,
            R.drawable.ic_orange_big,
            R.drawable.ic_red_big
    };
    private static final Integer[] smallImgArr = new Integer[]{
            R.drawable.ic_gray_small,
            R.drawable.ic_green_small,
            R.drawable.ic_yellow_small,
            R.drawable.ic_orange_small,
            R.drawable.ic_red_small
    };
}