package com.tejia.lijin.app.util;
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import android.content.Context;
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import android.graphics.Bitmap;
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import android.graphics.BitmapFactory;
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import android.graphics.Canvas;
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import android.graphics.Paint;
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import android.graphics.PorterDuff;
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import android.graphics.PorterDuffXfermode;
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import android.graphics.RectF;
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import android.util.AttributeSet;
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import android.view.View;
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import com.tejia.lijin.app.R;
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import java.text.DecimalFormat;
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/**
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* 限时秒杀进度条
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*/
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public class SaleProgressView extends View {
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//商品总数
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private int totalCount;
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//当前卖出数
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private int currentCount;
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//动画需要的
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private int progressCount;
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//售出比例
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private float scale;
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//边框颜色
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private int sideColor;
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//文字颜色
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// private int textColor;
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//边框粗细
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private float sideWidth;
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//边框所在的矩形
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private Paint sidePaint;
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//背景矩形
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private RectF bgRectF;
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private float radius;
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private int width;
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private int height;
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private PorterDuffXfermode mPorterDuffXfermode;//设置混合模式
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private Paint srcPaint;
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private Bitmap fgSrc;
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private Bitmap bgSrc;
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// private String nearOverText;//即将售罄
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// private String overText;//已售罄
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// private float textSize;
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// private Paint textPaint;
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// private float nearOverTextWidth;
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// private float overTextWidth;
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private float baseLineY;
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private Bitmap bgBitmap;
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private boolean isNeedAnim;
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public SaleProgressView(Context context) {
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this(context, null);
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}
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public SaleProgressView(Context context, AttributeSet attrs) {
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super(context, attrs);
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initAttrs(context, attrs);
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initPaint();
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}
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private void initAttrs(Context context, AttributeSet attrs) {
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// TypedArray ta = context.obtainStyledAttributes(attrs, R.styleable.SaleProgressView);
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// sideColor = ta.getColor(R.styleable.SaleProgressView_sideColor, 0xffff3c32);
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// --textColor = ta.getColor(R.styleable.SaleProgressView_textColor, 0xffff3c32);
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// sideWidth = ta.getDimension(R.styleable.SaleProgressView_sideWidth, dp2px(2));
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// --overText = ta.getString(R.styleable.SaleProgressView_overText);//已售罄
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// --nearOverText = ta.getString(R.styleable.SaleProgressView_nearOverText);//即将售罄
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// --textSize = ta.getDimension(R.styleable.SaleProgressView_textSize, sp2px(16));
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// isNeedAnim = ta.getBoolean(R.styleable.SaleProgressView_isNeedAnim, true);
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// ta.recycle();
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}
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private void initPaint() {
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sidePaint = new Paint(Paint.ANTI_ALIAS_FLAG);
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sidePaint.setStyle(Paint.Style.STROKE);
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sidePaint.setStrokeWidth(sideWidth);
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sidePaint.setColor(sideColor);
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srcPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
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// textPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
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// textPaint.setStyle(Paint.Style.FILL);
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// textPaint.setTextSize(textSize);
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mPorterDuffXfermode = new PorterDuffXfermode(PorterDuff.Mode.SRC_IN);
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// nearOverTextWidth = textPaint.measureText(nearOverText);
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// overTextWidth = textPaint.measureText(overText);
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}
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@Override
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protected void onSizeChanged(int w, int h, int oldw, int oldh) {
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super.onSizeChanged(w, h, oldw, oldh);
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//获取View的宽高
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width = getMeasuredWidth();
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height = getMeasuredHeight();
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//圆角半径
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radius = height / 2.0f;
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//留出一定的间隙，避免边框被切掉一部分
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if (bgRectF == null) {
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bgRectF = new RectF(sideWidth, sideWidth, width - sideWidth, height - sideWidth);
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}
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// if (baseLineY == 0.0f) {
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// Paint.FontMetricsInt fm = textPaint.getFontMetricsInt();
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// baseLineY = height / 2 - (fm.descent / 2 + fm.ascent / 2);
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// }
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}
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@Override
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protected void onDraw(Canvas canvas) {
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super.onDraw(canvas);
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if (!isNeedAnim) {
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progressCount = currentCount;
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}
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if (totalCount == 0) {
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scale = 0.0f;
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} else {
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scale = Float.parseFloat(new DecimalFormat("0.00").format((float) progressCount / (float) totalCount));
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}
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drawSide(canvas);
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drawBg(canvas);
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drawFg(canvas);
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// drawText(canvas);
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}
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//绘制背景边框
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private void drawSide(Canvas canvas) {
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canvas.drawRoundRect(bgRectF, radius, radius, sidePaint);
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}
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//绘制背景
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private void drawBg(Canvas canvas) {
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if (bgBitmap == null) {
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bgBitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
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}
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Canvas bgCanvas = new Canvas(bgBitmap);
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if (bgSrc == null) {
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bgSrc = BitmapFactory.decodeResource(getResources(), R.drawable.ic_spike);
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}
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bgCanvas.drawRoundRect(bgRectF, radius, radius, srcPaint);
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srcPaint.setXfermode(mPorterDuffXfermode);
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bgCanvas.drawBitmap(bgSrc, null, bgRectF, srcPaint);
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canvas.drawBitmap(bgBitmap, 0, 0, null);
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srcPaint.setXfermode(null);
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}
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//绘制进度条
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private void drawFg(Canvas canvas) {
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if (scale == 0.0f) {
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return;
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}
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Bitmap fgBitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
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Canvas fgCanvas = new Canvas(fgBitmap);
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if (fgSrc == null) {
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fgSrc = BitmapFactory.decodeResource(getResources(), R.drawable.ic_spike);
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}
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fgCanvas.drawRoundRect(
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new RectF(sideWidth, sideWidth, (width - sideWidth) * scale, height - sideWidth),
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radius, radius, srcPaint);
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srcPaint.setXfermode(mPorterDuffXfermode);
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fgCanvas.drawBitmap(fgSrc, null, bgRectF, srcPaint);
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canvas.drawBitmap(fgBitmap, 0, 0, null);
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srcPaint.setXfermode(null);
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}
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public void setTotalAndCurrentCount(int totalCount, int currentCount) {
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this.totalCount = totalCount;
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if (currentCount > totalCount) {
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currentCount = totalCount;
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}
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this.currentCount = currentCount;
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postInvalidate();//重新绘制
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}
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}
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