对应paint的breakText方法实现

import measure from ‘@ohos.measure’ 
 
@Entry 
@Component 
struct Index { 
@State message: string = ‘xxxxxxxxxxxxxxxxaaaaaaaaaaaaaabbbbbbbbbbbbbbbbbbbb’; 
textSize: SizeOptions = measure.measureTextSize({ 
textContent: this.message, 
fontSize: ‘50px’, 
constraintWidth: 50 
}) 
 
build() { 
Row() { 
Column() { 
Text(this.message) 
.width(this.textSize.width) 
.maxLines(1) 
.textOverflow({ overflow: TextOverflow.Ellipsis }) 
.onClick(() => { 
console.log(“textSize====height:” + this.textSize.height); 
}) 
} 
.width(‘100%’) 
} 
.height(‘100%’) 
} 
}