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修改YouTube首页布局

修改YouTube首页每行推荐视频数量

// ==UserScript==
// @name                修改YouTube首页布局
// @name:zh-CN          修改YouTube首页布局
// @name:zh-TW          修改YouTube首頁佈局
// @name:en             Modify YouTube Homepage Layout
// @name:ja             YouTubeホームレイアウトカスタマイズ
// @description         修改YouTube首页每行推荐视频数量
// @description:zh-CN   修改YouTube首页每行推荐视频数量
// @description:zh-TW   修改YouTube首頁每行推薦視頻數量
// @description:en      Change the number of recommended videos per row on the YouTube homepage
// @description:ja      YouTubeのホームページで1行に表示されるおすすめ動画の数を変更します
// @version             1.3
// @author              爆菊大师
// @match               https://www.youtube.com/
// @icon                https://www.youtube.com/favicon.ico
// @grant               GM_registerMenuCommand
// @license             MIT
// @namespace https://greatest.deepsurf.us/users/929164
// ==/UserScript==

(() => {
    'use strict';
    const CONFIG = {
        columns: 'ytd-items-per-row',
        shorts: 'ytd-shorts-blocked',
        portraitColumns: 'ytd-portrait-columns'
    };
    const state = {
        columns: Math.min(10, Math.max(1,
            parseInt(localStorage.getItem(CONFIG.columns)) || 5)),
        shorts: localStorage.getItem(CONFIG.shorts) === 'true',
        portraitColumns: parseInt(localStorage.getItem(CONFIG.portraitColumns)) || null
    };
    const [layoutStyle, shortsStyle] = ['columns', 'shorts'].map(() =>
        document.head.appendChild(document.createElement('style'))
    );
    const handleResize = () => {
        if (state.portraitColumns !== null) {
            const { innerWidth: width, innerHeight: height } = window;
            const originalColumns = Math.min(10, Math.max(1,
                parseInt(localStorage.getItem(CONFIG.columns)) || 5));
            state.columns = width > height ? originalColumns : state.portraitColumns;
            updateStyle();
        }
    };
    const updateStyle = () => {
        layoutStyle.textContent = `
            .style-scope.ytd-two-column-browse-results-renderer {
                --ytd-rich-grid-items-per-row: ${state.columns} !important;
                --ytd-rich-grid-gutter-margin: 0px !important;
            }
        `;
        shortsStyle.textContent = state.shorts ? `
            ytd-rich-section-renderer,
            ytd-reel-shelf-renderer {
                display: none !important;
            }
        ` : '';
    };
    GM_registerMenuCommand('🖥️ 设置每行显示数量', () => {
        const input = prompt('请输入每行显示的视频数量（1-10）:', state.columns);
        if (input === null) return;

        const value = Math.min(10, Math.max(1, parseInt(input) || state.columns));
        localStorage.setItem(CONFIG.columns, value);
        state.columns = value;
        handleResize();
        updateStyle();
        alert(`当前设置：每行显示 ${value} 个视频`);
    });
    GM_registerMenuCommand('📱 竖屏显示数量', () => {
        const input = prompt(`纵向模式列数（1-10，当前：${state.portraitColumns || "未设置"}）:`, state.portraitColumns || 6);
        if (input === null) return;
        const value = Math.min(10, Math.max(1, parseInt(input) || 6));
        localStorage.setItem(CONFIG.portraitColumns, value);
        state.portraitColumns = value;
        handleResize();
        alert(`竖屏当前设置：每行显示 ${value} 个视频`);
    });
    if (state.portraitColumns !== null) {
    GM_registerMenuCommand('清除竖屏设置', () => {
        if (!confirm('确定要清除竖屏设置吗？')) return;
        localStorage.removeItem(CONFIG.portraitColumns);
        state.portraitColumns = null;
        state.columns = Math.min(10, Math.max(1,
            parseInt(localStorage.getItem(CONFIG.columns)) || 5));
        updateStyle();
        alert('已清除竖屏设置');
    })};
    GM_registerMenuCommand(state.shorts ? '显示Shorts' : '隐藏Shorts', () => {
        state.shorts = !state.shorts;
        localStorage.setItem(CONFIG.shorts, state.shorts);
        updateStyle();
        window.location.reload();
    });
    window.addEventListener('resize', handleResize);
    handleResize();
    updateStyle();
})();