有没有自定义字体并使用该字体进行文本测量的示例？

import font from ‘@ohos.font’ 
import measure from ‘@ohos.measure’ 
@Entry 
@Component 
struct Index { 
@State text:string = ‘123456’ 
@State familyName2:string = ‘20th_bold’ 
@State textWidth: number = measure.measureText({ 
textContent: this.text, 
fontFamily: this.familyName2, 
fontStyle:FontStyle.Normal, 
fontWeight: 100 
}) 
@State textWidth2: number = measure.measureText({ 
textContent: this.text, 
fontFamily: this.familyName2, 
fontStyle: FontStyle.Italic, 
fontWeight: FontWeight.Bolder 
}) 
aboutToAppear(): void { 
font.registerFont({ 
familyName: this.familyName2, 
familySrc: $rawfile(‘font/20th_bold.ttf’) 
}) 
} 
 
build() { 
Row() { 
Column() { 
Text(this.text) 
.fontSize(30) 
.fontFamily(‘20th_bold’) 
.fontColor(’#333333’) 
.fontWeight(400) 
Text(我是自定义字体的测量宽度1：${this.textWidth}) //181 
Text(我是自定义字体的测量宽度2：${this.textWidth2}) //207 
} 
.width(‘100%’) 
} 
.height(‘100%’) 
} 
}