android自定义view--温度计

其他 2018-07-29 20:59:32 阅读次数: 0 
package com.sharelink.mytest;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.Typeface;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.util.Log;
import android.widget.ImageView;

import java.math.BigDecimal;

/**
 * Created by Administrator on 2017/3/3.
 */
public class Thermometer extends ImageView {

    private Paint mPaint;
    private int height, width, circle_radius;
    private int COLOR_BROWN = Color.parseColor("#A5937B");
    private int COLOR_YELLOW = Color.parseColor("#F7AF1F");
    private int COLOR_GRAY = Color.parseColor("#C1CDCD");
    private int COLOR_TEXT = Color.parseColor("#49BDCC");
    private float temperature = 0f;
    private float temp_temperature = 0f;

    public void setTemperature(float value) {

        Log.e(this.getClass().getSimpleName(), "setTemperature " + value);

        if (value < 0f) {
            value = 0;
        } else if (value > 41.5f) {
            value = 41.5f;
        }

        if (value <= 34f) {
            value = new BigDecimal(value).setScale(0, BigDecimal.ROUND_HALF_UP).floatValue();
        } else {
            value = new BigDecimal(value).setScale(1, BigDecimal.ROUND_HALF_UP).floatValue();
        }
        if (temp_temperature > value) {
            temp_temperature = 0f;
        }
        temperature = value;
        invalidate();
    }

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

    public Thermometer(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        init();
    }

    private void init() {
        mPaint = new Paint();
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        this.height = getMeasuredHeight();
        this.width = getMeasuredWidth();
        circle_radius = width / 4;
    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        drawBG(canvas);
        drawScale(canvas);
        drawFG(canvas);

        if (temp_temperature < temperature && temp_temperature < 41.5) {
            if (temp_temperature < 34) {
                BigDecimal b1 = new BigDecimal(Float.toString(temp_temperature));
                BigDecimal b2 = new BigDecimal(Float.toString(1f));
                temp_temperature = b1.add(b2).floatValue();
            } else {
                BigDecimal b1 = new BigDecimal(Float.toString(temp_temperature));
                BigDecimal b2 = new BigDecimal(Float.toString(0.1f));
                temp_temperature = b1.add(b2).floatValue();
            }
            invalidate();
        }
        // else if(temp_temperature>temperature && temp_temperature>0){
        // if (temp_temperature < 34) {
        // BigDecimal b1 = new BigDecimal(Float.toString(temp_temperature));
        // BigDecimal b2 = new BigDecimal(Float.toString(1f));
        // temp_temperature = b1.subtract(b2).floatValue();
        // } else {
        // BigDecimal b1 = new BigDecimal(Float.toString(temp_temperature));
        // BigDecimal b2 = new BigDecimal(Float.toString(0.1f));
        // temp_temperature = b1.subtract(b2).floatValue();
        // }
        // invalidate();
        // }
    }

    // private void refresh() {
    // postDelayed(new Runnable() {
    // @Override
    // public void run() {
    // if (temp_temperature < temperature && temp_temperature<41.5) {
    // if (temp_temperature < 34.5) {
    // BigDecimal b1 = new BigDecimal(Float.toString(temp_temperature));
    // BigDecimal b2 = new BigDecimal(Float.toString(0.1f));
    // temp_temperature = b1.add(b2).floatValue();
    // } else {
    // BigDecimal b1 = new BigDecimal(Float.toString(temp_temperature));
    // BigDecimal b2 = new BigDecimal(Float.toString(0.01f));
    // temp_temperature = b1.add(b2).floatValue();
    // }
    // invalidate();
    // refresh();
    // }else if(temp_temperature>temperature && temp_temperature>0){
    // if (temp_temperature < 34.5) {
    // BigDecimal b1 = new BigDecimal(Float.toString(temp_temperature));
    // BigDecimal b2 = new BigDecimal(Float.toString(0.1f));
    // temp_temperature = b1.subtract(b2).floatValue();
    // } else {
    // BigDecimal b1 = new BigDecimal(Float.toString(temp_temperature));
    // BigDecimal b2 = new BigDecimal(Float.toString(0.01f));
    // temp_temperature = b1.subtract(b2).floatValue();
    // }
    // invalidate();
    // refresh();
    // }
    // }
    // }, 50);
    // }

    private void drawScale(Canvas canvas) {
        drawLines(canvas);
        drawText(canvas);
    }

    private void drawText(Canvas canvas) {
        mPaint.reset();
        mPaint.setColor(COLOR_TEXT);
        mPaint.setAntiAlias(true);
        mPaint.setTextSize(60);
        Typeface font = Typeface.create(Typeface.DEFAULT_BOLD, Typeface.BOLD);
        mPaint.setTypeface(font);
        mPaint.setTextAlign(Paint.Align.CENTER);

        Paint.FontMetrics fontMetrics = mPaint.getFontMetrics();
        // 计算文字高度
        float fontHeight = fontMetrics.bottom - fontMetrics.top;

        int line_width = circle_radius * 2 / 3 - 10;
        int text_x = this.width - getPaddingRight() - (circle_radius - 5 + circle_radius) - line_width - line_width / 2
                - 15;

        int begin = 6;//41
        float recH = this.height - getPaddingBottom() - circle_radius - circle_radius + 15 - (getPaddingTop() + 5);

        while (begin >= 0) {  //35

            float addition = 6.5f - begin;
            float addition_h = addition / (41.5f - 34.5f) * recH;

            // 计算文字baseline
            canvas.drawText(String.valueOf(begin*10)+"℃", text_x, getPaddingTop() + addition_h + fontHeight / 3, mPaint);
            begin--;
        }
    }

    private void drawFG(Canvas canvas) {
        drawYellowArc(canvas, temp_temperature);
        drawYellowRec(canvas, temp_temperature);
        drawRecShadow(canvas);
        drawCircleShadow(canvas);
    }

    private void drawCircleShadow(Canvas canvas) {
        mPaint.reset();
        mPaint.setColor(Color.WHITE);
        mPaint.setAntiAlias(true);
        mPaint.setAlpha(80);

        int radius = (circle_radius - 5) * 2 / 5;

        int circle_x = this.width - getPaddingRight() - circle_radius * 3 / 4;
        int circle_y = this.height - getPaddingBottom() - circle_radius * 5 / 4;

        canvas.drawCircle(circle_x, circle_y, radius, mPaint);
    }

    private void drawRecShadow(Canvas canvas) {
        // mPaint.reset();
        // mPaint.setColor(Color.WHITE);
        // mPaint.setAntiAlias(true);
        // mPaint.setAlpha(50);
        //
        float begin = 41.2f;
        float end = 34.8f;
        float totalH = this.height - getPaddingBottom() - circle_radius - circle_radius + 15 - (getPaddingTop() + 5);
        float recH = totalH * (begin - end) / (41.5f - 34.5f);
        float beginY = getPaddingTop() + (41.5f - begin) / (41.5f - 34.5f) * totalH;
        //
        Rect r2 = new Rect(); // RectF对象
        r2.left = this.width - getPaddingRight() - circle_radius - circle_radius / 3 + 5 + circle_radius / 4; // 左边
        r2.top = (int) beginY; // 上边
        r2.right = this.width - getPaddingRight() - circle_radius + circle_radius / 3 - 5 - circle_radius / 10; // 右边
        r2.bottom = (int) (beginY + recH); // 下边
        // canvas.drawRect(r2, mPaint);

        Drawable d = getResources().getDrawable(R.drawable.recbtn);
        d.setBounds(r2);
        d.draw(canvas);
    }

    private void drawLines(Canvas canvas) {
        mPaint.reset();
        mPaint.setColor(COLOR_GRAY);
        mPaint.setAntiAlias(true);

        int line_width = circle_radius * 2 / 3 - 10;
        int line_x = this.width - getPaddingRight() - (circle_radius - 5 + circle_radius) - line_width;

        float begin = 41.0f;
        float recH = this.height - getPaddingBottom() - circle_radius - circle_radius + 15 - (getPaddingTop() + 5);

        while (begin >= 35) {

            float addition = 41.5f - begin;
            float addition_h = addition / (41.5f - 34.5f) * recH;
            int temp = (int) begin;
            if (begin - temp > 0) {
                canvas.drawLine(line_x + line_width * 3f / 4, getPaddingTop() + addition_h, line_x + line_width,
                        getPaddingTop() + addition_h, mPaint);
            } else {
                canvas.drawLine(line_x, getPaddingTop() + addition_h, line_x + line_width, getPaddingTop() + addition_h,
                        mPaint);
            }

            BigDecimal b1 = new BigDecimal(Float.toString(begin));
            BigDecimal b2 = new BigDecimal(Float.toString(0.1f));
            begin = b1.subtract(b2).floatValue();
        }

    }

    private void drawYellowRec(Canvas canvas, float temperature2) {
        if (temperature2 <= 34)
            return;
        float addition = temperature2 - 34.5f;
        double rate = addition / (41.5d - 34.5d);
        if (rate > 1f) {
            rate = 1f;
        }

        rate = 1 - rate;
        mPaint.reset();
        mPaint.setColor(COLOR_YELLOW);
        mPaint.setAntiAlias(true);
        float recH = this.height - getPaddingBottom() - circle_radius - circle_radius + 15 - (getPaddingTop() + 5);
        RectF r2 = new RectF(); // RectF对象
        r2.left = this.width - getPaddingRight() - circle_radius - circle_radius / 3 + 5; // 左边
        r2.top = (float) (getPaddingTop() + 5 + recH * rate); // 上边
        r2.right = this.width - getPaddingRight() - circle_radius + circle_radius / 3 - 5; // 右边
        r2.bottom = this.height - getPaddingBottom() - circle_radius - 5; // 下边

        if ((float) (getPaddingTop() + 5 + recH * rate) - 30 >= (getPaddingTop() + 5)) {
            canvas.drawRoundRect(r2, 0, 0, mPaint);
            RectF r3 = new RectF(); // RectF对象
            r3.left = this.width - getPaddingRight() - circle_radius - circle_radius / 3 + 5; // 左边
            r3.top = (float) (getPaddingTop() + 5 + recH * rate) - 20; // 上边
            r3.right = this.width - getPaddingRight() - circle_radius + circle_radius / 3 - 5; // 右边
            r3.bottom = (float) (getPaddingTop() + 5 + recH * rate); // 下边
            canvas.drawRoundRect(r3, 0, 0, mPaint);

            mPaint.setColor(COLOR_BROWN);
            RectF r4 = new RectF(); // RectF对象
            r4.left = this.width - getPaddingRight() - circle_radius - circle_radius / 3 + 5; // 左边
            r4.top = (float) (getPaddingTop() + 5 + recH * rate) - 30; // 上边
            r4.right = this.width - getPaddingRight() - circle_radius + circle_radius / 3 - 5; // 右边
            r4.bottom = (float) (getPaddingTop() + 5 + recH * rate); // 下边
            canvas.drawRoundRect(r4, 10, 10, mPaint);
        } else {
            if ((float) (getPaddingTop() + 5 + recH * rate) - 10 >= (getPaddingTop() + 5)) {
                canvas.drawRoundRect(r2, 0, 0, mPaint);
            } else
                canvas.drawRoundRect(r2, 20, 20, mPaint);
        }
    }

    private void drawYellowArc(Canvas canvas, float value) {
        mPaint.reset();
        mPaint.setColor(COLOR_YELLOW);
        mPaint.setAntiAlias(true);

        RectF r2 = new RectF(); // RectF对象
        r2.left = this.width - getPaddingRight() - (circle_radius - 5 + circle_radius); // 左边
        r2.top = this.height - getPaddingBottom() - (circle_radius - 5 + circle_radius); // 上边
        r2.right = this.width - getPaddingRight() - 5; // 右边
        r2.bottom = this.height - getPaddingBottom() - 5;

        if (value <= 34.5f) {
            if (value >= 0) {
                float angle = (value / 34.5f) * 360;
                float start_angle = 90 - angle / 2;
                canvas.drawArc(r2, start_angle, angle, false, mPaint);
            }
        } else {
            canvas.drawArc(r2, -90, 360, false, mPaint);
        }

    }

    private void drawBG(Canvas canvas) {
        drawWhiteCircle(canvas);
        drawWhiteRec(canvas);
        drawBrownCircle(canvas);
        drawBrownRec(canvas);
    }

    private void drawBrownRec(Canvas canvas) {
        mPaint.reset();
        mPaint.setColor(COLOR_BROWN);
        mPaint.setAntiAlias(true);

        RectF r2 = new RectF(); // RectF对象
        r2.left = this.width - getPaddingRight() - circle_radius - circle_radius / 3 + 5; // 左边
        r2.top = getPaddingTop() + 5; // 上边
        r2.right = this.width - getPaddingRight() - circle_radius + circle_radius / 3 - 5; // 右边
        r2.bottom = this.height - getPaddingBottom() - circle_radius - 5; // 下边
        canvas.drawRoundRect(r2, 20, 20, mPaint);
    }

    private void drawBrownCircle(Canvas canvas) {
        mPaint.reset();
        mPaint.setColor(COLOR_BROWN);
        mPaint.setAntiAlias(true);

        int brown_radius = circle_radius - 5;

        int circle_x = this.width - getPaddingRight() - circle_radius;
        int circle_y = this.height - getPaddingBottom() - circle_radius;

        canvas.drawCircle(circle_x, circle_y, brown_radius, mPaint);
    }

    private void drawWhiteRec(Canvas canvas) {
        mPaint.reset();
        mPaint.setColor(Color.WHITE);
        mPaint.setAntiAlias(true);

        RectF r2 = new RectF(); // RectF对象
        r2.left = this.width - getPaddingRight() - circle_radius - circle_radius / 3; // 左边
        r2.top = getPaddingTop(); // 上边
        r2.right = this.width - getPaddingRight() - circle_radius + circle_radius / 3; // 右边
        r2.bottom = this.height - circle_radius; // 下边
        canvas.drawRoundRect(r2, 20, 20, mPaint);
    }

    private void drawWhiteCircle(Canvas canvas) {
        mPaint.reset();
        mPaint.setColor(Color.WHITE);
        mPaint.setAntiAlias(true);

        int circle_x = this.width - getPaddingRight() - circle_radius;
        int circle_y = this.height - getPaddingBottom() - circle_radius;

        canvas.drawCircle(circle_x, circle_y, circle_radius, mPaint);
    }

}

猜你喜欢

转载自blog.csdn.net/wfskxj/article/details/60143490
今日推荐
TIOBE 5 月榜单：Fortran “复活”进入 Top 10
GCC 14.1 发布
面壁智能发布 Eurux-8x22B 开源大模型 —— 堪称「理科状元」
开源日报 | 谷歌扶持鸿蒙上位；开源Rabbit R1；Docker加持的安卓手机；微软的焦虑和野心；海尔电器把开放平台关了
中国码农的“35岁魔咒”
蘭雅 CorelDRAW 插件 2024.5.1 国际劳动节版，免费下载
Arc Browser for Windows 1.0 正式 GA
90后程序员开发视频搬运软件、不到一年获利超 700 万，结局很刑！
周排行
Java自定义时间格式
同步整形电路
在开发中最最最常用的字符串的属性大集合
Linux 查看端口占用并杀掉
Java基础四：ArrayList
多线程之死锁就是这么简单
mysql 基础命令集
awk 命令详解
Centos6.3编译安装nginx+php步骤
OCR （Optical Character Recognition，光学字符识别）
每日归档
更多
2024-05-08(42)
2024-05-07(14)
2024-05-06(40)
2024-05-05(0)
2024-05-04(7)
2024-05-03(19)
2024-05-02(0)
2024-05-01(4)
2024-04-30(1)
2024-04-29(40)

代码天地 © 2018 codetd.com

境外服务器   最新电视剧2022