@lightningtv/renderer
Version:
Lightning 3 Renderer
40 lines • 1.46 kB
JavaScript
/*
* If not stated otherwise in this file or this component's LICENSE file the
* following copyright and licenses apply:
*
* Copyright 2023 Comcast Cable Communications Management, LLC.
*
* Licensed under the Apache License, Version 2.0 (the License);
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { PeekableIterator } from './PeekableGenerator.js';
import { getUnicodeCodepoints } from './getUnicodeCodepoints.js';
/**
* Measures a single-line of text width ignoring any unmapped glyphs including line breaks
*
* @param text
* @param shaperProps
* @param shaper
* @returns
*/
export function measureText(text, shaperProps, shaper) {
const glyphs = shaper.shapeText(shaperProps, new PeekableIterator(getUnicodeCodepoints(text, 0), 0));
let width = 0;
for (const glyph of glyphs) {
if (glyph.mapped && glyph.codepoint !== 8203) {
// Skip ZWSP (\u200B)
width += glyph.xAdvance;
}
}
return width;
}
//# sourceMappingURL=measureText.js.map