package com.chic.base.widget;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.text.TextUtils;
import android.util.AttributeSet;
import android.util.TypedValue;
import android.view.View;
import androidx.annotation.Nullable;
public class BeveLabelView extends View {
private final static int MODE_LEFT_TOP = 0;
private final static int MODE_RIGHT_TOP = 1;
private final static int MODE_LEFT_BOTTOM = 2;
private final static int MODE_RIGHT_BOTTOM = 3;
private final static int MODE_LEFT_TOP_FILL = 4;
private final static int MODE_RIGHT_TOP_FILL = 5;
private final static int MODE_LEFT_BOTTOM_FILL = 6;
private final static int MODE_RIGHT_BOTTOM_FILL = 7;
private int mBgColor;//背景颜色
private String mText;//显示文字
private int mTextSize;//文字大小
private int mTextColor;//文字颜色
private int mLength;//标题长度
private int mCorner;//圆角
private int mMode;//显示模式
private Paint mPaint;
private Path path;
private int mWidth, mHeight;
private int mRotate = 45;//因为默认模式是1，所以这时是45度
private int mX, mY;
public BeveLabelView(Context context) {
super (context);
}
public BeveLabelView(Context context, @Nullable AttributeSet attrs) {
super (context, attrs);
TypedArray array = context.obtainStyledAttributes (attrs, R.styleable.BeveLabelView);
mBgColor = array.getColor (R.styleable.BeveLabelView_label_bg_color, Color.RED);//默认红色
mText = array.getString (R.styleable.BeveLabelView_label_text);
mTextSize = array.getDimensionPixelOffset (R.styleable.BeveLabelView_label_text_size, sp2px (11));
mTextColor = array.getColor (R.styleable.BeveLabelView_label_text_color, Color.WHITE);
mLength = array.getDimensionPixelOffset (R.styleable.BeveLabelView_label_length, dip2px (40));
mCorner = array.getDimensionPixelOffset (R.styleable.BeveLabelView_label_corner, 0);
mMode = array.getInt (R.styleable.BeveLabelView_label_mode, 1);
mPaint = new Paint (Paint.ANTI_ALIAS_FLAG);
mPaint.setAntiAlias (true);
path = new Path ();
if (TextUtils.isEmpty (mText))
{
mText = "Label";
}
}
public BeveLabelView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
super (context, attrs, defStyleAttr);
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure (widthMeasureSpec, heightMeasureSpec);
mHeight = mWidth = MeasureSpec.getSize (widthMeasureSpec);
}
@Override
protected void onDraw(Canvas canvas) {
// super.onDraw (canvas);
mPaint.setColor (mBgColor);
drawBackgroundText (canvas);
}
private void drawBackgroundText(Canvas canvas) {
if (mWidth != mHeight) {
throw new IllegalStateException ("width must equal to height");//标签view 是一个正方形，
}
switch (mMode) {
case MODE_LEFT_TOP:
mCorner = 0;//没有铺满的时候mCorner要归零；
leftTopMeasure ();
getLeftTop ();
break;
case MODE_RIGHT_TOP:
mCorner = 0;
rightTopMeasure ();
getRightTop ();
break;
case MODE_LEFT_BOTTOM:
mCorner = 0;
leftBottomMeasure ();
getLeftBottom ();
break;
case MODE_RIGHT_BOTTOM:
mCorner = 0;
rightBottomMeasure ();
getRightBottom ();
break;
case MODE_LEFT_TOP_FILL:
leftTopMeasure ();
getLeftTopFill ();
if (mCorner != 0) {
canvas.drawPath (path, mPaint);
getLeftTop ();
}
break;
case MODE_RIGHT_TOP_FILL:
rightTopMeasure ();
getRightTopFill ();
if (mCorner != 0) {
canvas.drawPath (path, mPaint);
getRightTop ();
}
break;
case MODE_LEFT_BOTTOM_FILL:
leftBottomMeasure ();
getLeftBottomFill ();
if (mCorner != 0) {
canvas.drawPath (path, mPaint);
getLeftBottom ();
}
break;
case MODE_RIGHT_BOTTOM_FILL:
rightBottomMeasure ();
getRightBottomFill ();
if (mCorner != 0) {
canvas.drawPath (path, mPaint);
getRightBottom ();
}
break;
default:
}
canvas.drawPath (path, mPaint);
mPaint.setTextSize (mTextSize);
mPaint.setTextAlign (Paint.Align.CENTER);
mPaint.setColor (mTextColor);
canvas.translate (mX, mY);
canvas.rotate (mRotate);
int baseLineY = -(int) (mPaint.descent ()+mPaint.ascent ())/2;//基线中间点的y轴计算公式
canvas.drawText (mText, 0, baseLineY, mPaint);
}
private void rightBottomMeasure() {
mRotate = -45;
mY = mX = mWidth / 2 + mLength / 4;
}
private void leftBottomMeasure() {
mRotate = 45;
mX = mWidth / 2 - mLength / 4;
mY = mHeight / 2 + mLength / 4;
}
private void rightTopMeasure() {
mRotate = 45;
mX = mWidth / 2 + mLength / 4;
mY = mHeight / 2 - mLength / 4;
}
private void leftTopMeasure() {
mRotate = -45;
mY = mX = mWidth / 2 - mLength / 4;
}
//左上角铺满
private void getLeftTopFill() {
if (mCorner != 0) {
path.addRoundRect (0, 0, mWidth / 2, mHeight / 2, new float[]{mCorner, mCorner, 0, 0, 0, 0, 0, 0}, Path.Direction.CW);
} else {
path.moveTo (0, 0);
path.lineTo (mWidth, 0);
path.lineTo (0, mHeight);
path.close ();
}
}
//左上角不铺满
private void getLeftTop() {
path.moveTo (mCorner != 0 ? mCorner : mWidth - mLength, 0);
path.lineTo (mWidth, 0);
path.lineTo (0, mHeight);
path.lineTo (0, mCorner != 0 ? mCorner : mHeight - mLength);
path.close ();
}
//左下角铺满
private void getLeftBottomFill() {
if (mCorner != 0) {
path.addRoundRect (0, mHeight / 2, mWidth / 2, mHeight, new float[]{0, 0, 0, 0, 0, 0, mCorner, mCorner}, Path.Direction.CW);
} else {
path.moveTo (0, 0);
path.lineTo (mWidth, mHeight);
path.lineTo (0, mHeight);
path.close ();
}
}
//左下角不铺满
private void getLeftBottom() {
path.moveTo (0, 0);
path.lineTo (mWidth, mHeight);
path.lineTo (mCorner != 0 ? mCorner : mWidth - mLength, mHeight);
path.lineTo (0, mCorner != 0 ? mHeight - mCorner : mLength);
path.close ();
}
//右上角铺满
private void getRightTopFill() {
if (mCorner != 0) {
path.addRoundRect (mWidth / 2, 0, mWidth, mHeight / 2, new float[]{0, 0, mCorner, mCorner, 0, 0, 0, 0}, Path.Direction.CW);
} else {
path.moveTo (0, 0);
path.lineTo (mWidth, 0);
path.lineTo (mWidth, mHeight);
path.close ();
}
}
//右上角不铺满
private void getRightTop() {
path.moveTo (0, 0);
path.lineTo (mCorner != 0 ? mWidth - mCorner : mLength, 0);
path.lineTo (mWidth, mCorner != 0 ? mCorner : mHeight - mLength);
path.lineTo (mWidth, mHeight);
path.close ();
}
//右下角铺满
private void getRightBottomFill() {
if (mCorner != 0) {
path.addRoundRect (mWidth / 2, mHeight / 2, mWidth, mHeight, new float[]{0, 0, 0, 0, mCorner, mCorner, 0, 0}, Path.Direction.CW);
} else {
path.moveTo (mWidth, 0);
path.lineTo (mWidth, mHeight);
path.lineTo (0, mHeight);
path.close ();
}
}
//右下角不铺满
private void getRightBottom() {
path.moveTo (mWidth, 0);
path.lineTo (mWidth, mCorner != 0 ? mHeight - mCorner : mLength);
path.lineTo (mCorner != 0 ? mWidth - mCorner : mLength, mHeight);
path.lineTo (0, mHeight);
path.close ();
}
/**
* @param sp 转换大小
*/
private int sp2px(int sp) {
return (int) TypedValue.applyDimension (TypedValue.COMPLEX_UNIT_SP, sp, getResources ().getDisplayMetrics ());
}
/**
* @param dip 转换大小
*/
private int dip2px(int dip) {
return (int) TypedValue.applyDimension (TypedValue.COMPLEX_UNIT_DIP, dip, getResources ().getDisplayMetrics ());
}
}
`
<!--背景颜色-->
<attr name="label_bg_color" format="color|reference"/>
<!--文字-->
<attr name="label_text" format="string"/>
<!-- 文字颜色-->
<attr name="label_text_color" format="color|reference"/>
<!--文字大小-->
<attr name="label_text_size" format="dimension"/>
<attr name="label_length" format="dimension"/>
<!-- 圆角-->
<attr name="label_corner" format="dimension"/>
-<attr name="label_mode">
<!-- fill是沾满整个，-->
<enum name="left_top" value="0"/>
<enum name="right_top" value="1"/>
<enum name="left_bottom" value="2"/>
<enum name="right_bottom" value="3"/>
<enum name="left_top_fill" value="4"/>
<enum name="right_top_fill" value="5"/>
<enum name="left_bottom_fill" value="6"/>
<enum name="right_bottom_fill" value="7"/>
`
