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nv/html/dwv/tests/dicom/generator.html
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192
nv/html/dwv/tests/dicom/generator.html
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<!DOCTYPE html>
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<html>
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<head>
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<title>DICOM Generator</title>
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<meta charset="UTF-8">
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<script type="text/javascript" src="../../src/dicom/dicomParser.js"></script>
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<script type="text/javascript" src="../../src/dicom/dicomWriter.js"></script>
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<script type="text/javascript" src="../../src/dicom/dictionary.js"></script>
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<script type="text/javascript">
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// tags file
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var _tagsFile = null;
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// generate DICOM data
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function generate()
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{
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// check validity
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if (!isValidTags()) {
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return;
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}
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// get tags from the textarea
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var tags = JSON.parse(document.getElementById('tags').value);
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// optional pixel generator (cannot be propagated)
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var pixelGenerator = "gradSquare";
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if ( typeof tags.PixelData !== "undefined" ) {
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pixelGenerator = tags.PixelData;
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delete tags.PixelData;
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}
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// convert JSON to DICOM element object
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var res = dwv.dicom.getElementsFromJSONTags(tags);
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var dicomElements = res.elements;
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// pixels: small gradient square
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dicomElements.x7FE00010 = null;
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try {
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dicomElements.x7FE00010 = dwv.dicom.generatePixelDataFromJSONTags(
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tags, res.offset, pixelGenerator);
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} catch (error) {
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console.error(error);
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alert(error.message);
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}
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// create writer
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var writer = new dwv.dicom.DicomWriter();
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var dicomBuffer = null;
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try {
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dicomBuffer = writer.getBuffer(dicomElements);
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} catch (error) {
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console.error(error);
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alert(error.message);
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}
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// view as Blob to allow download
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var blob = new Blob([dicomBuffer], {type: 'application/dicom'});
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// update generate button
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var element = document.getElementById("generate");
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element.download = "dwv-generated.dcm";
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element.href = URL.createObjectURL(blob);
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}
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// save the tags as a JSON file
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function saveTags()
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{
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// check validity
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if (!isValidTags()) {
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return;
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}
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// get text from the textarea
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var text = document.getElementById('tags').value;
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// view as Blob to allow download
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var blob = new Blob([text], {type:"text/plain"});
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// update save button
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var element = document.getElementById("save");
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console.log(_tagsFile);
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element.download = (_tagsFile === null ? "tags.json" : _tagsFile.name);
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element.href = URL.createObjectURL(blob);
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}
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// is the JSON valid?
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function isValidTags()
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{
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try {
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JSON.parse(document.getElementById('tags').value);
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}
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catch (error) {
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alert("The JSON is not valid, please check it with JSONLint.");
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return false;
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}
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return true;
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}
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// open JSONLint to check the tags
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function launchJSONlint()
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{
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var text = document.getElementById('tags').value;
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var link = "http://jsonlint.com/?json=" + encodeURIComponent(text);
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window.open(link);
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}
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// handle input tags file
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function onInputTagsFile(event)
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{
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if (event.target.files.length === 0) {
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return;
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}
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_tagsFile = event.target.files[0];
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var reader = new FileReader();
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reader.onload = function (event) {
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document.getElementById('tags').value = event.target.result;
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};
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reader.readAsText(_tagsFile);
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}
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</script>
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<style>
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body { font-family: Arial, Helvetica, sans-serif; }
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textarea { width: 99%; margin: 2px; }
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fieldset { background: whitesmoke; border: 1px solid grey; }
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.button {
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padding: 3px 7px 3px 7px;
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text-align: center;
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border-radius: 3px;
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border: 1px solid grey;
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text-decoration: none;
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font: 80% sans-serif;
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color: black;
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background: #E3E3E3;
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}
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.button-active {
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color: black;
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background: #E3E3E3;
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}
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.button-disabled {
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color: grey;
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background: #F3F3F3;
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}
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.button:hover {
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border: 1px solid black;
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}
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</style>
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</head>
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<body>
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<h1>DWV DICOM Generator</h1>
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<p>Simple DICOM data generator from json tags.
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Mainly used for generating test data, <b>use at your own risks!</b>
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<br>No need for a 'FileMetaInformationGroupLength', it is calculated automatically.
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Values should not be <code>null</code>...
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<br>Sequences have an optional <code>explicitLength</code> boolean parameter to write them
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and all their elements with implicit or explicit length. Its default value is <code>true</code>.
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Set as <code>{}</code>, a sequence will
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be written with explicit zero length, a <code>0</code> value will mean implicit length.
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</p>
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<form name="genform">
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<fieldset>
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<label for="intagsfile">JSON DICOM tags file: </label>
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<input id="intagsfile" type="file" name="file" onchange="onInputTagsFile(event);">
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</fieldset>
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<textarea id="tags" rows="25">
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{
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"TransferSyntaxUID": "1.2.840.10008.1.2.1",
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"Modality": "MR",
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"PatientName": "dwv-patient-name",
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"PhotometricInterpretation": "MONOCHROME2",
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"SamplesPerPixel": 1,
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"PlanarConfiguration": 0,
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"PixelRepresentation": 0,
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"Rows": 32,
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"Columns": 32,
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"BitsAllocated": 16,
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"BitsStored": 12,
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"HighBit": 11,
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"ReferencedImageSequence": {
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"explicitLength": true,
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"item0": {
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"ReferencedSOPClassUID": "1.2.840.10008.5.1.4.1.1.4",
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"ReferencedSOPInstanceUID": "1.3.12.2.1107.5.2.32.35162.2012021515511672669154094"
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},
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"item1": {
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"ReferencedSOPClassUID": "1.2.840.10008.5.1.4.1.1.4",
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"ReferencedSOPInstanceUID": "1.3.12.2.1107.5.2.32.35162.2012021515511286933854090"
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}
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}
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}
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</textarea>
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<fieldset>
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<a href="#" id="jsonlint" class="button" onclick="launchJSONlint();">JSONLint</a>
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<a href="#" id="save" class="button" onclick="saveTags();">Save Tags</a>
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<a href="#" id="generate" class="button" onclick="generate();">Generate</a>
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</fieldset>
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</form>
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</body>
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</html>
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