156 lines
3.8 KiB
Java
156 lines
3.8 KiB
Java
package com.uiuios.aios.view;
|
||
|
||
|
||
import android.content.Context;
|
||
import android.graphics.Canvas;
|
||
import android.graphics.Color;
|
||
import android.graphics.Paint;
|
||
import android.graphics.Rect;
|
||
import android.os.Build;
|
||
|
||
import android.util.AttributeSet;
|
||
|
||
public class RulerSeekBar extends androidx.appcompat.widget.AppCompatSeekBar {
|
||
|
||
/**
|
||
* 刻度线画笔
|
||
*/
|
||
private Paint mRulerPaint;
|
||
|
||
/**
|
||
* 刻度线的个数,等分数等于刻度线的个数加1
|
||
*/
|
||
private int mRulerCount = 1;
|
||
|
||
/**
|
||
* 每条刻度线的宽度
|
||
*/
|
||
private int mRulerWidth = 2;
|
||
|
||
/**
|
||
* 刻度线的颜色
|
||
*/
|
||
private int mRulerColor = Color.WHITE;
|
||
|
||
/**
|
||
* 滑块上面是否要显示刻度线
|
||
*/
|
||
private boolean isShowTopOfThumb = false;
|
||
|
||
public RulerSeekBar(Context context) {
|
||
super(context);
|
||
init();
|
||
}
|
||
|
||
public RulerSeekBar(Context context, AttributeSet attrs) {
|
||
super(context, attrs);
|
||
init();
|
||
}
|
||
|
||
public RulerSeekBar(Context context, AttributeSet attrs, int defStyleAttr) {
|
||
super(context, attrs, defStyleAttr);
|
||
init();
|
||
}
|
||
|
||
/**
|
||
* 初始化
|
||
*/
|
||
private void init() {
|
||
//创建绘制刻度线的画笔
|
||
mRulerPaint = new Paint();
|
||
mRulerPaint.setColor(mRulerColor);
|
||
mRulerPaint.setAntiAlias(true);
|
||
|
||
//Api21及以上调用，去掉滑块后面的背景
|
||
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
|
||
setSplitTrack(false);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* 重写onDraw方法绘制刻度线
|
||
*
|
||
* @param canvas
|
||
*/
|
||
@Override
|
||
protected synchronized void onDraw(Canvas canvas) {
|
||
super.onDraw(canvas);
|
||
|
||
//极限条件校验
|
||
if (getWidth() <= 0 || mRulerCount <= 0) {
|
||
return;
|
||
}
|
||
|
||
//获取每一份的长度
|
||
int length = (getWidth() - getPaddingLeft() - getPaddingRight() - mRulerCount * mRulerWidth) / (mRulerCount + 1);
|
||
|
||
//计算刻度线的顶部坐标和底部坐标
|
||
int rulerTop = getHeight() / 2 - getMinimumHeight() / 2;
|
||
int rulerBottom = rulerTop + getMinimumHeight();
|
||
|
||
//获取滑块的位置信息
|
||
Rect thumbRect = null;
|
||
if (getThumb() != null) {
|
||
thumbRect = getThumb().getBounds();
|
||
}
|
||
|
||
//绘制刻度线
|
||
for (int i = 1; i <= mRulerCount; i++) {
|
||
//计算刻度线的左边坐标和右边坐标
|
||
int rulerLeft = i * length + getPaddingLeft();
|
||
int rulerRight = rulerLeft + mRulerWidth;
|
||
|
||
//判断是否需要绘制刻度线
|
||
if (!isShowTopOfThumb && thumbRect != null && rulerLeft - getPaddingLeft() > thumbRect.left && rulerRight - getPaddingLeft() < thumbRect.right) {
|
||
continue;
|
||
}
|
||
|
||
//进行绘制
|
||
canvas.drawRect(rulerLeft, rulerTop, rulerRight, rulerBottom, mRulerPaint);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* 设置刻度线的个数
|
||
*
|
||
* @param mRulerCount
|
||
*/
|
||
public void setRulerCount(int mRulerCount) {
|
||
this.mRulerCount = mRulerCount;
|
||
requestLayout();
|
||
}
|
||
|
||
/**
|
||
* 设置刻度线的宽度，单位(px)
|
||
*
|
||
* @param mRulerWidth
|
||
*/
|
||
public void setRulerWidth(int mRulerWidth) {
|
||
this.mRulerWidth = mRulerWidth;
|
||
requestLayout();
|
||
}
|
||
|
||
/**
|
||
* 设置刻度线的颜色
|
||
*
|
||
* @param mRulerColor
|
||
*/
|
||
public void setRulerColor(int mRulerColor) {
|
||
this.mRulerColor = mRulerColor;
|
||
if (mRulerPaint != null) {
|
||
mRulerPaint.setColor(mRulerColor);
|
||
requestLayout();
|
||
}
|
||
}
|
||
|
||
/**
|
||
* 滑块上面是否需要显示刻度线
|
||
*
|
||
* @param isShowTopOfThumb
|
||
*/
|
||
public void setShowTopOfThumb(boolean isShowTopOfThumb) {
|
||
this.isShowTopOfThumb = isShowTopOfThumb;
|
||
requestLayout();
|
||
}
|
||
}
|