2023-07-22 14:17:24 +02:00
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<!DOCTYPE html>
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<html th:lang="${#locale.toString()}" th:lang-direction="#{language.direction}" xmlns:th="http://www.thymeleaf.org">
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<th:block th:insert="~{fragments/common :: head(title=#{rotate.title})}"></th:block>
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<body>
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<div id="page-container">
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<div id="content-wrap">
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<div th:insert="~{fragments/navbar.html :: navbar}"></div>
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<br> <br>
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<div class="container">
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<div class="row justify-content-center">
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<div class="col-md-6">
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<h2 th:text="#{rotate.header}"></h2>
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<form action="#" th:action="@{rotate-pdf}" th:object="${rotateForm}" method="post" enctype="multipart/form-data">
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<div th:replace="~{fragments/common :: fileSelector(name='fileInput', multiple=false, accept='application/pdf')}"></div>
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<input type="hidden" id="angleInput" name="angle" value="0">
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<div id="editSection" style="display: none">
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<div class="previewContainer">
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<img id="pdf-preview" />
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</div>
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<div class="buttonContainer">
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<button type="button" class="btn btn-secondary" onclick="rotate(-90)">
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<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-arrow-counterclockwise" viewBox="0 0 16 16">
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<path fill-rule="evenodd" d="M8 3a5 5 0 1 1-4.546 2.914.5.5 0 0 0-.908-.417A6 6 0 1 0 8 2v1z" />
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<path d="M8 4.466V.534a.25.25 0 0 0-.41-.192L5.23 2.308a.25.25 0 0 0 0 .384l2.36 1.966A.25.25 0 0 0 8 4.466z" />
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</svg>
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</button>
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<button type="submit" id="submitBtn" class="btn btn-primary" th:text="#{rotate.submit}"></button>
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<button type="button" class="btn btn-secondary" onclick="rotate(90)">
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<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-arrow-clockwise" viewBox="0 0 16 16">
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<path fill-rule="evenodd" d="M8 3a5 5 0 1 0 4.546 2.914.5.5 0 0 1 .908-.417A6 6 0 1 1 8 2v1z" />
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<path d="M8 4.466V.534a.25.25 0 0 1 .41-.192l2.36 1.966c.12.1.12.284 0 .384L8.41 4.658A.25.25 0 0 1 8 4.466z" />
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</svg>
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</button>
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</div>
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</div>
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</form>
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</div>
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</div>
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</div>
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</div>
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<div th:insert="~{fragments/footer.html :: footer}"></div>
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</div>
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<script>
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const angleInput = document.getElementById("angleInput");
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const fileInput = document.getElementById("fileInput-input");
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const preview = document.getElementById("pdf-preview");
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fileInput.addEventListener("change", async function() {
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console.log("loading pdf");
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document.querySelector("#editSection").style.display = "";
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var url = URL.createObjectURL(fileInput.files[0])
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pdfjsLib.GlobalWorkerOptions.workerSrc = 'pdfjs/pdf.worker.js'
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const pdf = await pdfjsLib.getDocument(url).promise;
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const page = await pdf.getPage(1);
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const canvas = document.createElement("canvas");
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// set the canvas size to the size of the page
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if (page.rotate == 90 || page.rotate == 270) {
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canvas.width = page.view[3];
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canvas.height = page.view[2];
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} else {
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canvas.width = page.view[2];
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canvas.height = page.view[3];
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}
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// render the page onto the canvas
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var renderContext = {
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canvasContext: canvas.getContext("2d"),
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viewport: page.getViewport({ scale: 1 })
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};
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await page.render(renderContext).promise;
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preview.src = canvas.toDataURL();
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});
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function rotate(deg) {
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var lastTransform = preview.style.rotate;
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if (!lastTransform) {
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lastTransform = "0";
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}
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const lastAngle = parseInt(lastTransform.replace(/[^\d-]/g, ''));
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const newAngle = lastAngle + deg;
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preview.style.rotate = newAngle + "deg";
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angleInput.value = newAngle;
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}
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</script>
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<style>
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#pdf-preview {
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margin: 0 auto;
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display: block;
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max-width: calc(100% - 30px);
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max-height: calc(100% - 30px);
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box-shadow: 0 0 4px rgba(100, 100, 100, .25);
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transition: rotate .3s;
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position: absolute;
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top: 50%;
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left: 50%;
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translate: -50% -50%;
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}
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.previewContainer {
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aspect-ratio: 1;
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width: 100%;
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border: 1px solid rgba(0, 0, 0, .125);
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border-radius: 0.25rem;
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margin: 1rem 0;
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padding: 15px;
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display: block;
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overflow: hidden;
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position: relative;
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}
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.buttonContainer {
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display: flex;
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justify-content: space-around;
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}
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</style>
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</body>
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2023-01-29 18:06:53 +01:00
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</html>
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