OH_Drawing_Font_Metrics

typedef struct {...} OH_Drawing_Font_Metrics

Overview

This struct describes the measurement information about a font.

Since: 12

Related module: Drawing

Header file: drawing_font.h

Summary

Member Variables

Name	Description
uint32_t flags	Measurement information that is valid.
float top	Maximum distance from the baseline to the highest coordinate of a character.
float ascent	Recommended distance from the baseline to the highest coordinate of a character.
float descent	Recommended distance from the baseline to the lowest coordinate of a character.
float bottom	Maximum distance from the baseline to the lowest coordinate of a character.
float leading	Gap between rows.
float avgCharWidth	Average character width, or zero if unknown.
float maxCharWidth	Maximum character width, or zero if unknown.
float xMin	Maximum distance to the leftmost of the font bounding box. Generally, the value is a negative value. Variable fonts are not recommended.
float xMax	Maximum distance to the rightmost of the font bounding box. Generally, the value is a negative value. Variable fonts are not recommended.
float xHeight	Height of a lowercase letter, or zero if unknown. Generally, the value is a negative value.
float capHeight	Height of an uppercase letter, or zero if unknown. Generally, the value is a negative value.
float underlineThickness	Thickness of the underline.
float underlinePosition	Position of the underline, that is, vertical distance from the baseline to the top of the underline. Generally, the value is a positive value.
float strikeoutThickness	Thickness of the strikethrough.
float strikeoutPosition	Position of the strikethrough, that is, vertical distance from the baseline to the bottom of the strikethrough. Generally, the value is a negative value.