rx-player
Version:
Canal+ HTML5 Video Player
57 lines (56 loc) • 2.12 kB
JavaScript
/**
* Copyright 2015 CANAL+ Group
*
* 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 addClassName from "../../../../compat/add_class_name";
import log from "../../../../log";
import { REGXP_LENGTH } from "../regexps";
/**
* Apply `tts:fontSize` styling to an HTML element.
* @param {HTMLElement} element
* @param {string} fontSize
*/
export default function applyFontSize(element, fontSize) {
const trimmedFontSize = fontSize.trim();
const splittedFontSize = trimmedFontSize.split(" ");
if (splittedFontSize.length === 0) {
return;
}
const firstFontSize = REGXP_LENGTH.exec(splittedFontSize[0]);
if (firstFontSize === null) {
return;
}
if (firstFontSize[2] === "px" || firstFontSize[2] === "em") {
element.style.fontSize = firstFontSize[1] + firstFontSize[2];
}
else if (firstFontSize[2] === "c") {
element.style.position = "relative";
addClassName(element, "proportional-style");
element.setAttribute("data-proportional-font-size", firstFontSize[1]);
}
else if (firstFontSize[2] === "%") {
const toNum = Number(firstFontSize[1]);
if (isNaN(toNum)) {
log.warn("ttml", 'could not parse fontSize value "' + firstFontSize[1] + '" into a number');
}
else {
element.style.position = "relative";
addClassName(element, "proportional-style");
element.setAttribute("data-proportional-font-size", String(toNum / 100));
}
}
else {
log.warn("ttml", "unhandled fontSize unit", { unit: firstFontSize[2] });
}
}