From 27f180efca808046df3f3e917ee5f98d2d54849b Mon Sep 17 00:00:00 2001
From: Runt <qingingrunt2010@qq.com>
Date: Wed, 04 May 2022 13:57:34 +0000
Subject: [PATCH] 滑动歌词 计算时间
---
app/src/main/java/com/auto/lyric/widgets/LyricView.java | 301 +++++++++++++++++++++++++++++---------------------
1 files changed, 175 insertions(+), 126 deletions(-)
diff --git a/app/src/main/java/com/auto/lyric/widgets/LyricView.java b/app/src/main/java/com/auto/lyric/widgets/LyricView.java
index 47c4f82..77d8a77 100644
--- a/app/src/main/java/com/auto/lyric/widgets/LyricView.java
+++ b/app/src/main/java/com/auto/lyric/widgets/LyricView.java
@@ -1,151 +1,200 @@
package com.auto.lyric.widgets;
-import android.app.Activity;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
-import android.graphics.Typeface;
-import android.media.MediaPlayer;
-import android.os.Bundle;
-import android.os.Handler;
import android.util.AttributeSet;
-import android.widget.TextView;
+import android.util.Log;
-import com.auto.lyric.R;
-
-import java.io.File;
-import java.io.IOException;
-import java.util.ArrayList;
-import java.util.List;
+import com.auto.lyric.data.LyricObject;
+import com.auto.lyric.data.LyricServer;
+import com.auto.lyric.util.DeviceUtil;
/**
* 歌词
* Created by Runt (qingingrunt2010@qq.com) on 2022/4/30.
*/
public class LyricView extends androidx.appcompat.widget.AppCompatTextView {
- private Paint mPaint;
- private float mX;
- private Paint mPathPaint;
- public int index = 0;
- private List<Sentence> list;
- public float mTouchHistoryY;
- private int mY;
- private float middleY;//
- private static final int DY = 40; //
- public LyricView(Context context) {
+
+
+ private float mX; //屏幕X轴的中点，此值固定，保持歌词在X中间显示
+ private float offsetY; //歌词在Y轴上的偏移量，此值会根据歌词的滚动变小
+ private int lrcIndex=0; //保存歌词TreeMap的下标
+ private int SIZEWORD=0;//显示歌词文字的大小值
+ private int INTERVAL=45;//歌词每行的间隔
+ Paint paint=new Paint();//画笔，用于画不是高亮的歌词
+ Paint paintHL=new Paint(); //画笔，用于画高亮的歌词，即当前唱到这句歌词
+
+ public LyricView(Context context){
super(context);
init();
}
- public LyricView(Context context, AttributeSet attr) {
- super(context, attr);
+
+ public LyricView(Context context, AttributeSet attrs) {
+ super(context, attrs);
init();
}
- public LyricView(Context context, AttributeSet attr, int i) {
- super(context, attr, i);
- init();
- }
- private void init() {
- setFocusable(true);
- if(list==null){
- list=new ArrayList<Sentence>();
- Sentence sen=new Sentence(0," ");
- list.add(0, sen);
- }
- //
- mPaint = new Paint();
- mPaint.setAntiAlias(true);
- mPaint.setTextSize(24);
- mPaint.setColor(Color.BLACK);
- mPaint.setAlpha(80);
- mPaint.setTypeface(Typeface.SERIF);
- //
- mPathPaint = new Paint();
- mPathPaint.setAntiAlias(true);
- mPathPaint.setColor(Color.RED);
- mPathPaint.setTextSize(24);
- mPathPaint.setTypeface(Typeface.SANS_SERIF);
- }
+
+ /* (non-Javadoc)
+ * @see android.view.View#onDraw(android.graphics.Canvas)
+ */
+ @Override
protected void onDraw(Canvas canvas) {
- super.onDraw(canvas);
- canvas.drawColor(0xEFeffff);
- Paint p = mPaint;
- Paint p2 = mPathPaint;
- p.setTextAlign(Paint.Align.LEFT);
- if (index == -1)
- return;
- p2.setTextAlign(Paint.Align.LEFT);
- //
- canvas.drawText(list.get(index).getName(), mX, middleY, p2);
- float tempY = middleY;
- //
- for (int i = index - 1; i >= 0; i--) {
- tempY = tempY - DY;
- if (tempY < 0) {
- break;
- }
- canvas.drawText(list.get(i).getName(), mX, tempY, p);
- }
- tempY = middleY;
- //
- for (int i = index + 1; i < list.size(); i++) {
- //
- tempY = tempY + DY;
- if (tempY > mY) {
- break;
- }
- canvas.drawText(list.get(i).getName(), mX, tempY, p);
- }
- }
- protected void onSizeChanged(int w, int h, int ow, int oh) {
- super.onSizeChanged(w, h, ow, oh);
- mX = w * 0.3f;
- mY = h;
- middleY = h * 0.5f;
- }
- public long updateIndex(int index) {
- if (index == -1)
- return -1;
- this.index=index;
- return index;
- }
- public List<Sentence> getList() {
- return list;
- }
- public void setList(List<Sentence> list) {
- this.list = list;
- }
- public void updateUI(){
- new Thread(new updateThread()).start();
- }
- class updateThread implements Runnable {
- long time = 300;
- int i=0;
- public void run() {
- while (true) {
- long sleeptime = updateIndex(i);
- time += sleeptime;
- mHandler.post(mUpdateResults);
- if (sleeptime == -1)
- return;
- try {
- Thread.sleep(time);
- i++;
- if(i==getList().size())
- {
- i=0;
- time = 300;
- }
- } catch (InterruptedException e) {
- e.printStackTrace();
+ if(LyricServer.getLrc_map().size() > 0){
+ paintHL.setTextSize(SIZEWORD);
+ paint.setTextSize(SIZEWORD);
+ LyricObject temp= LyricServer.getLrc_map().get(lrcIndex);
+ canvas.drawText(temp.lrc, mX, offsetY+(SIZEWORD+INTERVAL)*lrcIndex, paintHL);
+ // 画当前歌词之前的歌词
+ for(int i=lrcIndex-1;i>=0;i--){
+ temp=LyricServer.getLrc_map().get(i);
+ if(offsetY+(SIZEWORD+INTERVAL)*i<0){
+ break;
}
+ canvas.drawText(temp.lrc, mX, offsetY+(SIZEWORD+INTERVAL)*i, paint);
+ }
+ // 画当前歌词之后的歌词
+ for(int i=lrcIndex+1;i<LyricServer.getLrc_map().size();i++){
+ temp=LyricServer.getLrc_map().get(i);
+ if(offsetY+(SIZEWORD+INTERVAL)*i>600){
+ break;
+ }
+ canvas.drawText(temp.lrc, mX, offsetY+(SIZEWORD+INTERVAL)*i, paint);
}
}
- }
- Handler mHandler = new Handler();
- Runnable mUpdateResults = new Runnable() {
- public void run() {
- invalidate(); //
+ else{
+ paint.setTextSize(25);
+ canvas.drawText("找不到歌词", mX, 310, paint);
}
- };
+ super.onDraw(canvas);
+ }
+
+ public void init(){
+ offsetY=320;
+
+ paint=new Paint();
+ paint.setTextAlign(Paint.Align.CENTER);
+ paint.setColor(Color.GREEN);
+ paint.setAntiAlias(true);
+ paint.setDither(true);
+ paint.setAlpha(180);
+
+
+ paintHL=new Paint();
+ paintHL.setTextAlign(Paint.Align.CENTER);
+
+ paintHL.setColor(Color.RED);
+ paintHL.setAntiAlias(true);
+ paintHL.setAlpha(255);
+ }
+
+ /**
+ * 根据歌词里面最长的那句来确定歌词字体的大小
+ */
+ public void setTextSize(){
+ if(LyricServer.getLrc_map().size() == 0){
+ return;
+ }
+ int max=LyricServer.getLrc_map().get(0).lrc.length();
+ for(int i=1;i<LyricServer.getLrc_map().size();i++){
+ LyricObject lrcStrLength=LyricServer.getLrc_map().get(i);
+ if(max<lrcStrLength.lrc.length()){
+ max=lrcStrLength.lrc.length();
+ }
+ }
+ SIZEWORD = DeviceUtil.convertDpToPixel(320/max,getContext());
+
+ }
+
+ protected void onSizeChanged(int w, int h, int oldw, int oldh) {
+ mX = w * 0.5f;
+ super.onSizeChanged(w, h, oldw, oldh);
+ }
+
+ /**
+ * 歌词滚动的速度
+ *
+ * @return 返回歌词滚动的速度
+ */
+ public Float SpeedLrc(){
+ float speed=0;
+ if(offsetY+(SIZEWORD+INTERVAL)*lrcIndex>220){
+ speed=((offsetY+(SIZEWORD+INTERVAL)*lrcIndex-220)/20);
+
+ } else if(offsetY+(SIZEWORD+INTERVAL)*lrcIndex < 120){
+ Log.i("speed", "speed is too fast!!!");
+ speed = 0;
+ }
+ // if(speed<0.2){
+ // speed=0.2f;
+ // }
+ return speed;
+ }
+
+ /**
+ * 按当前的歌曲的播放时间，从歌词里面获得那一句
+ * @param time 当前歌曲的播放时间
+ * @return 返回当前歌词的索引值
+ */
+ public int getIndex(int time){
+ int index=0;
+ for(int i=0;i<LyricServer.getLrc_map().size();i++){
+ LyricObject temp=LyricServer.getLrc_map().get(i);
+ if(temp.begintime<time){
+ ++index;
+ }
+ }
+ lrcIndex = index-1;
+ if(lrcIndex<0){
+ lrcIndex=0;
+ }
+ return lrcIndex;
+ }
+
+ public void setIndex(int lrcIndex) {
+ this.lrcIndex = lrcIndex;
+ }
+
+ /**
+ * @return the offsetY
+ */
+ public float getOffsetY() {
+ return offsetY;
+ }
+
+ /**
+ * @param offsetY the offsetY to set
+ */
+ public void setOffsetY(float offsetY) {
+ this.offsetY = offsetY;
+ }
+
+ /**
+ * @return 返回歌词文字的大小
+ */
+ public int getSIZEWORD() {
+ return SIZEWORD;
+ }
+
+ /**
+ * 设置歌词文字的大小
+ * @param sIZEWORD the sIZEWORD to set
+ */
+ public void setSIZEWORD(int sIZEWORD) {
+ SIZEWORD = sIZEWORD;
+ }
+
+ public int getIndexFromOffsetY(float offsetY){
+ //220 - index * (binding.lyric.getSIZEWORD() + 44)
+ int index = (int) ((220 - offsetY) / (SIZEWORD + 44));
+ Log.i("LyricView", "getIndexFromOffsetY index:"+index);
+ if(LyricServer.getLrc_map().keySet().size()>index){
+ return index;
+ }else if(index < 0){
+ return 0;
+ }else{
+ return LyricServer.getLrc_map().keySet().size() -1;
+ }
+ }
}
--
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