源码提交

js/watermark.js

@@ -0,0 +1,167 @@
+(function($) {
+    'use strict';
+
+    const options = lelmsData.options;
+
+    function addWatermark() {
+        const container = $('#lelms-watermark');
+        const username = lelmsData.username;
+        
+        // 使用 Math.max 获取真实文档高度
+        const documentHeight = Math.max(
+            $(document).height(),
+            $(window).height(),
+            $('body').height(),
+            $('.site-content').height() || 0
+        );
+        const windowWidth = $(window).width();
+        
+        container.empty().css('height', documentHeight + 'px');
+        
+        const spacing = parseInt(options.watermark_spacing);
+        const rows = Math.ceil(documentHeight / spacing);
+        const cols = Math.ceil(windowWidth / spacing);
+        
+        // 使用文档片段优化性能
+        const fragment = document.createDocumentFragment();
+        for (let i = 0; i < rows; i++) {
+            for (let j = 0; j < cols; j++) {
+                const watermark = $('<div>', {
+                    class: 'watermark-text',
+                    text: username,
+                    css: {
+                        left: (j * spacing) + 'px',
+                        top: (i * spacing) + 'px',
+                        color: options.watermark_color,
+                        opacity: options.watermark_opacity,
+                        fontSize: options.watermark_size + 'px',
+                        transform: `rotate(${options.watermark_angle}deg)`
+                    }
+                })[0];
+                fragment.appendChild(watermark);
+            }
+        }
+        container[0].appendChild(fragment);
+    }
+
+    function preventDevTools() {
+        if (options.enable_devtools_protection !== 'yes') return;
+
+        // 优化的事件处理
+        document.addEventListener('keydown', function(e) {
+            if (e.key === 'F12' || 
+                (e.ctrlKey && e.shiftKey && e.key === 'I') || 
+                (e.ctrlKey && e.key === 'U')) {
+                e.preventDefault();
+                alert(lelmsData.warningMessage);
+                return false;
+            }
+        });
+
+        // 改进的右键菜单处理
+        document.addEventListener('contextmenu', function(e) {
+            const target = e.target;
+            const allowedSelectors = [
+                'input', 'textarea', 'select', 
+                '[contenteditable="true"]',
+                '.comment-form *',
+                '.wp-block-post-comments *',
+                '.wp-block-post-comments-form *',
+                'form *'
+            ].join(',');
+
+            if (!target.matches(allowedSelectors)) {
+                e.preventDefault();
+                return false;
+            }
+        });
+
+        // 优化的开发者工具检测
+        let devToolsCounter = 0;
+        let lastCheck = Date.now();
+        
+        const checkDevTools = () => {
+            const now = Date.now();
+            if (now - lastCheck < 800) return; // 防止过于频繁检查
+            lastCheck = now;
+
+            const threshold = 160;
+            const widthDiff = window.outerWidth - window.innerWidth;
+            const heightDiff = window.outerHeight - window.innerHeight;
+
+            if (widthDiff > threshold || heightDiff > threshold) {
+                devToolsCounter++;
+                if (devToolsCounter > 3) {
+                    alert(lelmsData.warningMessage);
+                    setTimeout(() => location.reload(), 100);
+                }
+            } else {
+                devToolsCounter = Math.max(0, devToolsCounter - 1);
+            }
+        };
+
+        const rafLoop = () => {
+            checkDevTools();
+            requestAnimationFrame(rafLoop);
+        };
+        requestAnimationFrame(rafLoop);
+    }
+
+    function preventCopy() {
+        if (options.enable_copy_protection !== 'yes') return;
+
+        const allowedSelectors = [
+            'input', 'textarea', 
+            '[contenteditable="true"]',
+            '.comment-form *',
+            '.wp-block-post-comments *',
+            '.wp-block-post-comments-form *',
+            'form *'
+        ].join(',');
+
+        document.addEventListener('copy', function(e) {
+            if (!e.target.matches(allowedSelectors)) {
+                e.preventDefault();
+                return false;
+            }
+        });
+        
+        document.addEventListener('selectstart', function(e) {
+            if (!e.target.matches(allowedSelectors)) {
+                e.preventDefault();
+                return false;
+            }
+        });
+    }
+
+    // 初始化
+    $(document).ready(function() {
+        preventDevTools();
+        addWatermark();
+        preventCopy();
+        
+        // 使用 ResizeObserver 监听尺寸变化
+        const resizeObserver = new ResizeObserver(_.debounce(() => {
+            addWatermark();
+        }, 200));
+        
+        resizeObserver.observe(document.body);
+
+        // 监听动态内容变化
+        const mutationObserver = new MutationObserver(_.debounce(() => {
+            addWatermark();
+        }, 200));
+        
+        mutationObserver.observe(document.body, {
+            childList: true,
+            subtree: true,
+            attributes: true
+        });
+
+        // 清理函数
+        $(window).on('unload', () => {
+            resizeObserver.disconnect();
+            mutationObserver.disconnect();
+        });
+    });
+})(jQuery);