23 lines
966 B
JavaScript
23 lines
966 B
JavaScript
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"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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var tslib_1 = require("tslib");
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var values_1 = require("./values");
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var memoize_1 = require("./memoize");
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var is_string_1 = require("./is-string");
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var ctx;
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/**
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* 计算文本的宽度
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*/
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exports.default = memoize_1.default(function (text, font) {
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if (font === void 0) { font = {}; }
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var fontSize = font.fontSize, fontFamily = font.fontFamily, fontWeight = font.fontWeight, fontStyle = font.fontStyle, fontVariant = font.fontVariant;
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if (!ctx) {
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ctx = document.createElement('canvas').getContext('2d');
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}
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ctx.font = [fontStyle, fontVariant, fontWeight, fontSize + "px", fontFamily].join(' ');
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return ctx.measureText(is_string_1.default(text) ? text : '').width;
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}, function (text, font) {
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if (font === void 0) { font = {}; }
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return tslib_1.__spreadArrays([text], values_1.default(font)).join('');
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});
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//# sourceMappingURL=measure-text-width.js.map
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