46 lines
1.2 KiB
JavaScript
46 lines
1.2 KiB
JavaScript
// 聊天室字号偏好控制，保留旧的 localStorage key 以兼容已有用户设置。
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export const CHAT_FONT_SIZE_STORAGE_KEY = "chat_font_size";
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/**
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* 应用字号到聊天消息窗口，并保存到 localStorage。
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*
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* @param {string|number} size 字号大小
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* @returns {boolean}
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*/
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export function applyFontSize(size) {
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const px = Number.parseInt(size, 10);
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if (Number.isNaN(px) || px < 10 || px > 30) {
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return false;
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}
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const publicContainer = document.getElementById("chat-messages-container");
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const privateContainer = document.getElementById("chat-messages-container2");
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if (publicContainer) {
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publicContainer.style.fontSize = `${px}px`;
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}
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if (privateContainer) {
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privateContainer.style.fontSize = `${px}px`;
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}
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localStorage.setItem(CHAT_FONT_SIZE_STORAGE_KEY, String(px));
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const selector = document.getElementById("font_size_select");
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if (selector) {
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selector.value = String(px);
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}
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return true;
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}
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/**
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* 从 localStorage 恢复已保存的聊天室字号。
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*
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* @returns {boolean}
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*/
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export function restoreChatFontSize() {
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const saved = localStorage.getItem(CHAT_FONT_SIZE_STORAGE_KEY);
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return saved ? applyFontSize(saved) : false;
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}
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