接口 TextMetrics

The dimensions of a piece of text in the canvas, as created by the CanvasRenderingContext2D.measureText() method.

interface TextMetrics {
    actualBoundingBoxAscent: number;
    actualBoundingBoxDescent: number;
    actualBoundingBoxLeft: number;
    actualBoundingBoxRight: number;
    fontBoundingBoxAscent: number;
    fontBoundingBoxDescent: number;
    width: number;
}

属性

actualBoundingBoxAscent actualBoundingBoxDescent actualBoundingBoxLeft actualBoundingBoxRight fontBoundingBoxAscent fontBoundingBoxDescent width

属性

只读actualBoundingBoxAscent

actualBoundingBoxAscent: number

Returns the measurement described below.

只读actualBoundingBoxDescent

actualBoundingBoxDescent: number

Returns the measurement described below.

只读actualBoundingBoxLeft

actualBoundingBoxLeft: number

Returns the measurement described below.

只读actualBoundingBoxRight

actualBoundingBoxRight: number

Returns the measurement described below.

只读fontBoundingBoxAscent

fontBoundingBoxAscent: number

Returns the measurement described below.

只读fontBoundingBoxDescent

fontBoundingBoxDescent: number

Returns the measurement described below.

只读width

width: number

Returns the measurement described below.

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目录

属性