songxy
/
AI_Engineering


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>PDF查看器</title>
    <style>
        body, html {
            margin: 0;
            padding: 0;
            height: 100%;
            display: flex;
            flex-direction: column;
            font-family: Arial, sans-serif;
        }
        #toolbar {
            background-color: #333;
            color: #fff;
            padding: 10px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid #555;
        }
        #toolbar button, #toolbar select {
            background-color: #444;
            color: #fff;
            border: none;
            padding: 5px 10px;
            margin: 0 5px;
            cursor: pointer;
        }
        #toolbar button:hover, #toolbar select:hover {
            background-color: #555;
        }
        #pdf-viewer-container {
            flex: 1;
            overflow-y: auto;
            padding: 10px;
        }
        #pdf-viewer {
            border: 1px solid #ccc;
            display: block;
            margin: 0 auto;
        }
    </style>
    <script src="pdf.min.js"></script>
</head>
<body>
<div id="toolbar">
    <div>
        <select id="scale-select">
            <option value="0.5">50%</option>
            <option value="1">100%</option>
            <option value="1.5">150%</option>
            <option value="2">200%</option>
        </select>
        <button id="rotate-left">左旋</button>
        <button id="rotate-right">右旋</button>
    </div>
</div>
<div id="pdf-viewer-container">
    <canvas id="pdf-viewer"></canvas>
</div>
<script>
    // 解析URL参数
    function getQueryParam(param) {
        const urlParams = new URLSearchParams(window.location.search);
        return urlParams.get(param);
    }

    // 获取PDF URL参数，如果没有则使用默认URL
    const pdfurl = getQueryParam('file') || '/compressed.tracemonkey-pldi-09.pdf';
    const isShowTools = getQueryParam('isShowTools') || 'true';
    let pdfDoc = null;
    let scale = 1.5;
    let rotation = 0;

    async function loadPDF() {
        if(!isShowTools||isShowTools=="false")
        {
            document.getElementById('toolbar').style.display = 'none';
        }
        const loadingTask = pdfjsLib.getDocument(pdfurl);
        pdfDoc = await loadingTask.promise;
        renderAllPages();
    }

    async function renderAllPages() {
        const numPages = pdfDoc.numPages;
        const canvas = document.getElementById('pdf-viewer');
        const context = canvas.getContext('2d');

        let totalHeight = 0;
        let totalWidth = 0;

        for (let pageNumber = 1; pageNumber <= numPages; pageNumber++) {
            const page = await pdfDoc.getPage(pageNumber);
            const viewport = page.getViewport({ scale, rotation });

            totalHeight += viewport.height;
            totalWidth = Math.max(totalWidth, viewport.width);
        }

        canvas.height = totalHeight;
        canvas.width = totalWidth;

        let currentHeight = 0;

        for (let pageNumber = 1; pageNumber <= numPages; pageNumber++) {
            const page = await pdfDoc.getPage(pageNumber);
            const viewport = page.getViewport({ scale, rotation });

            const renderContext = {
                canvasContext: context,
                viewport: viewport
            };

            context.save();
            context.translate(0, currentHeight);
            await page.render(renderContext).promise;
            context.restore();

            currentHeight += viewport.height;
        }
    }

    document.getElementById('scale-select').addEventListener('change', (event) => {
        scale = parseFloat(event.target.value);
        renderAllPages();
    });

    document.getElementById('rotate-left').addEventListener('click', () => {
        rotation = (rotation - 90 + 360) % 360; // 确保旋转角度在0-359之间
        renderAllPages();
    });

    document.getElementById('rotate-right').addEventListener('click', () => {
        rotation = (rotation + 90) % 360; // 确保旋转角度在0-359之间
        renderAllPages();
    });

    document.addEventListener('DOMContentLoaded', function () {
        loadPDF();
    });
</script>
</body>
</html>