@antv/g2plot
Version:
An interactive and responsive charting library
21 lines • 977 B
JavaScript
import { __spreadArrays } from "tslib";
import { isString, memoize, values } from '@antv/util';
import { getCanvasContext } from './context';
/**
* 计算文本在画布中的宽度
* @param text 文本
* @param font 字体
*/
export var measureTextWidth = memoize(function (text, font) {
if (font === void 0) { font = {}; }
var fontSize = font.fontSize, _a = font.fontFamily, fontFamily = _a === void 0 ? 'sans-serif' : _a, fontWeight = font.fontWeight, fontStyle = font.fontStyle, fontVariant = font.fontVariant;
var ctx = getCanvasContext();
// @see https://developer.mozilla.org/zh-CN/docs/Web/CSS/font
ctx.font = [fontStyle, fontWeight, fontVariant, fontSize + "px", fontFamily].join(' ');
var metrics = ctx.measureText(isString(text) ? text : '');
return metrics.width;
}, function (text, font) {
if (font === void 0) { font = {}; }
return __spreadArrays([text], values(font)).join('');
});
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