579 lines
24 KiB
JavaScript
579 lines
24 KiB
JavaScript
import { OHIF } from 'meteor/ohif:core';
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var allCornerstoneEvents = 'CornerstoneToolsMouseDown CornerstoneToolsMouseDownActivate ' +
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'CornerstoneToolsMouseClick CornerstoneToolsMouseDrag CornerstoneToolsMouseUp ' +
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'CornerstoneToolsMouseWheel CornerstoneToolsTap CornerstoneToolsTouchPress ' +
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'CornerstoneToolsTouchStart CornerstoneToolsTouchStartActive ' +
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'CornerstoneToolsMultiTouchDragStart';
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/**
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* This function loads a study series into a viewport element.
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*
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* @param data {object} Object containing the study, series, and viewport element to be used
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*/
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function loadDisplaySetIntoViewport(data, templateData) {
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log.info('imageViewerViewport loadDisplaySetIntoViewport');
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// Make sure we have all the data required to render the series
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if (!data.study || !data.displaySet || !data.element) {
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log.warn('loadDisplaySetIntoViewport: No Study, Display Set, or Element provided');
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return;
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}
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// Get the current element and it's index in the list of all viewports
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// The viewport index is often used to store information about a viewport element
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var element = data.element;
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var viewportIndex = $('.imageViewerViewport').index(element);
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layoutManager = layoutManager || window.layoutManager;
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layoutManager.viewportData = layoutManager.viewportData || {};
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if (layoutManager.viewportData[viewportIndex] === undefined) {
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layoutManager.viewportData[viewportIndex] = {};
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}
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layoutManager.viewportData[viewportIndex].viewportIndex = viewportIndex;
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// Get the contentID of the current worklist tab, if the viewport is running
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// alongside the worklist package
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var contentId = Session.get('activeContentId');
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// If the viewer is inside a tab, create an object related to the specified viewport
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// This data will be saved so that the tab can be reloaded to the same state after tabs
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// are switched
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if (contentId) {
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if (!ViewerData[contentId]) {
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return;
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}
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ViewerData[contentId].loadedSeriesData[viewportIndex] = {};
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}
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// Create an empty array to populate with image IDs
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var imageIds = [];
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// Loop through the current series and add metadata to the
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// Cornerstone meta data provider. This will be used to fill information
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// into the viewport overlays, and to calculate reference lines and orientation markers
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var displaySet = data.displaySet;
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var numImages = displaySet.images.length;
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var imageId;
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displaySet.images.forEach(function(image, imageIndex) {
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var metaData = {
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instance: image,
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series: displaySet, // TODO: Check this
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study: data.study,
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numImages: numImages,
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imageIndex: imageIndex + 1
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};
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var numFrames = image.numImageFrames;
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if (numFrames > 1) {
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log.info('Multiframe image detected');
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for (var i = 0; i < numFrames; i++) {
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metaData.frame = i;
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imageId = getImageId(image, i);
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imageIds.push(imageId);
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addMetaData(imageId, metaData);
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}
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} else {
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imageId = getImageId(image);
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imageIds.push(imageId);
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addMetaData(imageId, metaData);
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}
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});
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// Define the current image stack using the newly created image IDs
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var stack = {
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currentImageIdIndex: data.currentImageIdIndex || 0,
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imageIds: imageIds
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};
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// Show or hide the image scrollbar depending
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// on the number of images in the stack
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var currentOverlay = $(element).siblings('.imageViewerViewportOverlay');
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var imageControls = currentOverlay.find('.imageControls');
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currentOverlay.find('.imageControls').height($(element).height());
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if (stack.imageIds.length === 1) {
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imageControls.hide();
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currentOverlay.find('.topright, .bottomright').css('right', '3px');
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} else {
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imageControls.show();
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currentOverlay.find('.topright, .bottomright').css('right', '39px');
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// Update the maximum value of the slider
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var currentImageSlider = currentOverlay.find('#imageSlider');
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currentImageSlider.attr('max', stack.imageIds.length);
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currentImageSlider.val(1);
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// Set it's width to its parent's height
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// (because webkit is stupid and can't style vertical sliders)
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var scrollbar = currentOverlay.find('#scrollbar');
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scrollbar.height(scrollbar.parent().height() - 20);
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var overlayHeight = currentImageSlider.parent().height();
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currentImageSlider.width(overlayHeight);
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}
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// Get the current image ID for the stack that will be rendered
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imageId = imageIds[stack.currentImageIdIndex];
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// Save the current image ID inside the template data so it can be
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// retrieved from the template helpers
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templateData.imageId = imageId;
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// Save the current image ID inside the ViewportLoading object.
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//
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// The ViewportLoading object relates the viewport elements with whichever
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// image is currently being loaded into them. This is useful so that we can
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// place progress (download %) for each image inside the proper viewports.
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ViewportLoading[viewportIndex] = imageId;
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// Enable Cornerstone for the viewport element
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//
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var options = {
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renderer: 'webgl'
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};
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// NOTE: This uses the experimental WebGL renderer for Cornerstone!
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// If you have problems, replace it with this line instead:
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// cornerstone.enable(element);
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cornerstone.enable(element, options);
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// Get the handler functions that will run when loading has finished or thrown
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// an error. These are used to show/hide loading / error text boxes on each viewport.
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var endLoadingHandler = cornerstoneTools.loadHandlerManager.getEndLoadHandler();
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var errorLoadingHandler = cornerstoneTools.loadHandlerManager.getErrorLoadingHandler();
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// Start loading the image.
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cornerstone.loadAndCacheImage(imageId).then(function(image) {
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var enabledElement;
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try {
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enabledElement = cornerstone.getEnabledElement(element);
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} catch (error) {
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log.warn('Viewport destroyed before loaded image could be displayed');
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return;
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}
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// Update the enabled element with the image and viewport data
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// This is not usually necessary, but we need them stored in case
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// a sopClassUid-specific viewport setting is present.
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enabledElement.image = image;
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enabledElement.viewport = cornerstone.getDefaultViewport(enabledElement.canvas, image);
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// Check if there are default viewport settings for this sopClassUid
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if (!displaySet.images || !displaySet.images.length) {
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return;
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}
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var instance = displaySet.images[0];
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var instanceClassViewport = getInstanceClassDefaultViewport(instance, enabledElement, image.imageId);
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// If there are sopClassUid-specific viewport settings, apply them
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if (instanceClassViewport) {
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cornerstone.displayImage(element, image, instanceClassViewport);
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// Mark that this element should not be fit to the window in the resize listeners
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// TODO: Find another way to do this?
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enabledElement.fitToWindow = false;
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// Resize the canvas to fit the current viewport element size.
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cornerstone.resize(element, false);
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} else if (data.viewport) {
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// If there is a saved object containing Cornerstone viewport data
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// (e.g. scale, invert, window settings) in the input data, apply it now.
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cornerstone.displayImage(element, image, data.viewport);
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// Resize the canvas to fit the current viewport element size. Fit the displayed
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// image to the canvas dimensions.
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cornerstone.resize(element, true);
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} else {
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// If no saved viewport settings or modality-specific settings exists,
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// display the loaded image in the viewport element with no loaded viewport
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// settings.
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cornerstone.displayImage(element, image);
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// Resize the canvas to fit the current viewport element size. Fit the displayed
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// image to the canvas dimensions.
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cornerstone.resize(element, true);
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}
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// Remove the data for this viewport from the ViewportLoading object
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// This will stop the loading percentage complete from being displayed.
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delete ViewportLoading[viewportIndex];
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// Call the handler function that represents the end of the image loading phase
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// (e.g. hide the progress text box)
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endLoadingHandler(element);
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// Remove the 'empty' class from the viewport to hide any instruction text
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element.classList.remove('empty');
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// Hide the viewport instructions (i.e. 'Drag a stack here') and show
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// the viewport overlay data.
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$(element).siblings('.viewportInstructions').hide();
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$(element).siblings('.imageViewerViewportOverlay').show();
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// Add stack state managers for the stack tool, CINE tool, and reference lines
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cornerstoneTools.addStackStateManager(element, ['stack', 'playClip', 'referenceLines']);
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// Get the current viewport settings
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var viewport = cornerstone.getViewport(element);
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// Enable orientation markers, if applicable
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updateOrientationMarkers(element);
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// Clear any old stack data
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cornerstoneTools.clearToolState(element, 'stack');
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cornerstoneTools.addToolState(element, 'stack', stack);
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// Set the default CINE settings
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var frameRate = 1000 / displaySet.images[0].frameTime;
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var cineToolData = {
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loop: OHIF.viewer.cine.loop,
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framesPerSecond: frameRate || OHIF.viewer.cine.framesPerSecond
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};
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cornerstoneTools.addToolState(element, 'playClip', cineToolData);
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// Autoplay datasets that have framerates set
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if (frameRate) {
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cornerstoneTools.playClip(element);
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}
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// Enable mouse, mouseWheel, touch, and keyboard input on the element
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cornerstoneTools.mouseInput.enable(element);
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cornerstoneTools.touchInput.enable(element);
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cornerstoneTools.mouseWheelInput.enable(element);
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cornerstoneTools.keyboardInput.enable(element);
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// Use the tool manager to enable the currently active tool for this
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// newly rendered element
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var activeTool = toolManager.getActiveTool();
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toolManager.setActiveTool(activeTool, [element]);
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// Define a function to run whenever the Cornerstone viewport is rendered
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// (e.g. following a change of window or zoom)
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function onImageRendered(e, eventData) {
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log.info('imageViewerViewport onImageRendered');
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// Use Session to trigger reactive updates in the viewportOverlay helper functions
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// This lets the viewport overlay always display correct window / zoom values
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Session.set('CornerstoneImageRendered' + viewportIndex, Random.id());
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// Save the current viewport into the ViewerData global variable, as well as the
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// Meteor Session. This lets the viewport be saved/reloaded on a hot-code reload
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var viewport = cornerstone.getViewport(element);
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layoutManager.viewportData[viewportIndex].viewport = viewport;
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ViewerData[contentId].loadedSeriesData[viewportIndex].viewport = viewport;
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Session.set('ViewerData', ViewerData);
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}
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// Attach the onImageRendered callback to the CornerstoneImageRendered event
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$(element).off('CornerstoneImageRendered', onImageRendered);
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$(element).on('CornerstoneImageRendered', onImageRendered);
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// Set a random value for the Session variable in order to trigger an overlay update
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Session.set('CornerstoneImageRendered' + viewportIndex, Random.id());
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// Define a function to run whenever the Cornerstone viewport changes images
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// (e.g. during scrolling)
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function onNewImage(e, eventData) {
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log.info('imageViewerViewport onNewImage');
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// Update the templateData with the new imageId
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// This allows the template helpers to update reactively
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templateData.imageId = eventData.enabledElement.image.imageId;
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Session.set('CornerstoneNewImage' + viewportIndex, Random.id());
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layoutManager.viewportData[viewportIndex].imageId = eventData.enabledElement.image.imageId;
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// Get the element and stack data
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var element = e.target;
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var toolData = cornerstoneTools.getToolState(element, 'stack');
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if (!toolData || !toolData.data || !toolData.data.length) {
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return;
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}
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var stack = toolData.data[0];
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// Update the imageSlider value
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var currentOverlay = $(element).siblings('.imageViewerViewportOverlay');
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var currentImageSlider = currentOverlay.find('#imageSlider');
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currentImageSlider.val(stack.currentImageIdIndex + 1);
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// If this viewport is displaying a stack of images, save the current image
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// index in the stack to the global ViewerData object, as well as the Meteor Session.
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var stack = cornerstoneTools.getToolState(element, 'stack');
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if (stack && stack.data.length && stack.data[0].imageIds.length > 1) {
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var imageIdIndex = stack.data[0].imageIds.indexOf(templateData.imageId);
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layoutManager.viewportData[viewportIndex].currentImageIdIndex = imageIdIndex;
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ViewerData[contentId].loadedSeriesData[viewportIndex].currentImageIdIndex = imageIdIndex;
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Session.set('ViewerData', ViewerData);
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}
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}
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// Attach the onNewImage callback to the CornerstoneNewImage event
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$(element).off('CornerstoneNewImage', onNewImage);
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$(element).on('CornerstoneNewImage', onNewImage);
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// Set a random value for the Session variable in order to trigger an overlay update
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Session.set('CornerstoneNewImage' + viewportIndex, Random.id());
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function OnStackScroll(e, eventData) {
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// Get the element and stack data
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var element = e.target;
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var toolData = cornerstoneTools.getToolState(element, 'stack');
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if (!toolData || !toolData.data || !toolData.data.length) {
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return;
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}
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var stack = toolData.data[0];
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// Update the imageSlider value
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var currentOverlay = $(element).siblings('.imageViewerViewportOverlay');
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var currentImageSlider = currentOverlay.find('#imageSlider');
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currentImageSlider.val(stack.currentImageIdIndex + 1);
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}
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$(element).off('CornerstoneStackScroll', OnStackScroll);
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if (stack.imageIds.length > 1) {
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$(element).on('CornerstoneStackScroll', OnStackScroll);
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}
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// Define a function to trigger an event whenever a new viewport is being used
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// This is used to update the value of the "active viewport", when the user interacts
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// with a new viewport element
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function sendActivationTrigger(e, eventData) {
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// Check if the current active viewport in the Meteor Session
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// Is the same as the viewport in which the activation event was fired.
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// If it was, no changes are necessary, so stop here.
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var element = eventData.element;
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var activeViewportIndex = Session.get('activeViewport');
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var viewportIndex = $('.imageViewerViewport').index(element);
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// Reset the focus, even if we don't need to re-enable reference lines or prefetching
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$(element).focus();
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if (viewportIndex === activeViewportIndex) {
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return;
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}
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log.info('imageViewerViewport sendActivationTrigger');
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// Otherwise, trigger an 'ActivateViewport' event to be handled by the Template event
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// handler
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eventData.viewportIndex = viewportIndex;
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var customEvent = $.Event('ActivateViewport', eventData);
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// Need to overwrite the type set in the original event
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customEvent.type = 'ActivateViewport';
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$(e.target).trigger(customEvent, eventData);
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}
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// Attach the sendActivationTrigger function to all of the Cornerstone interaction events
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$(element).off(allCornerstoneEvents, sendActivationTrigger);
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$(element).on(allCornerstoneEvents, sendActivationTrigger);
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// Store the current series data inside the Layout Manager
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layoutManager.viewportData[viewportIndex] = {
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imageId: imageId,
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studyInstanceUid: data.studyInstanceUid,
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seriesInstanceUid: data.seriesInstanceUid,
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currentImageIdIndex: data.currentImageIdIndex,
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viewport: viewport,
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viewportIndex: viewportIndex
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};
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ViewerData[contentId].loadedSeriesData = layoutManager.viewportData;
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// Check if image plane (orientation / loction) data is present for the current image
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var imagePlane = cornerstoneTools.metaData.get('imagePlane', image.imageId);
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// If it is, and reference lines are enabled, add this element to the global synchronizer
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// that is used for updating reference lines, and enable reference lines for this viewport.
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if (OHIF.viewer.refLinesEnabled && imagePlane && imagePlane.frameOfReferenceUID) {
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OHIF.viewer.updateImageSynchronizer.add(element);
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}
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// Set the active viewport based on the Session variable
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// This is done to ensure that the active element has the current
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// focus, so that keyboard events are triggered.
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if (viewportIndex === Session.get('activeViewport')) {
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setActiveViewport(element);
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}
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// Temporary until we have a real window manager with events for series/study changed
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log.info('Set NewSeriesLoaded');
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Session.set('NewSeriesLoaded', Random.id());
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// Run any renderedCallback that exists in the data context
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if (data.renderedCallback && typeof data.renderedCallback === 'function') {
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data.renderedCallback(element);
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}
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}, function(error) {
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// If something goes wrong while loading the image, fire the error handler.
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errorLoadingHandler(element, imageId, error);
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});
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}
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/**
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* This function sets the display set for the study and calls LoadDisplaySetIntoViewport function
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*
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* @param data includes study data
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* @param displaySetInstanceUid Display set information which is loaded in Template
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* @param templateData currentData of Template
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*
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*/
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function setDisplaySet(data, displaySetInstanceUid, templateData) {
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var study = data.study;
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if (!study || !study.displaySets) {
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throw "Study does not exist or has no display sets";
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return;
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}
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study.displaySets.every(displaySet => {
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if (displaySet.displaySetInstanceUid === displaySetInstanceUid) {
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data.displaySet = displaySet;
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return false;
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}
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return true;
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});
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// If we didn't find anything, stop here
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if (!data.displaySet) {
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throw "Display set not found in specified study!";
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return;
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}
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// Otherwise, load pass the data object into loadSeriesIntoViewport
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loadDisplaySetIntoViewport(data, templateData);
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}
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/**
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* This function searches an object to return the keys that contain a specific value
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*
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* @param object {object} The object to be searched
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* @param value The value to be found
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*
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* @returns {array} The keys for which the object has the specified value
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*/
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function getKeysByValue(object, value) {
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// http://stackoverflow.com/questions/9907419/javascript-object-get-key-by-value
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return Object.keys(object).filter(function(key) {
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return object[key] === value;
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});
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}
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Meteor.startup(function() {
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// On Meteor startup, define the global objects used to store loading imageIds
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// by viewport / thumbnail element
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ViewportLoading = {};
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ThumbnailLoading = {};
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// Whenever the CornerstoneImageLoadProgress is fired, identify which viewports
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// the "in-progress" image is to be displayed in. Then pass the percent complete
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// via the Meteor Session to the other templates to be displayed in the relevant viewports.
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$(cornerstone).on('CornerstoneImageLoadProgress', function(e, eventData) {
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viewportIndices = getKeysByValue(ViewportLoading, eventData.imageId);
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viewportIndices.forEach(function(viewportIndex) {
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Session.set('CornerstoneLoadProgress' + viewportIndex, eventData.percentComplete);
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});
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thumbnailIndices = getKeysByValue(ThumbnailLoading, eventData.imageId);
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thumbnailIndices.forEach(function(thumbnailIndex) {
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Session.set('CornerstoneThumbnailLoadProgress' + thumbnailIndex, eventData.percentComplete);
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});
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});
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var config = {
|
|
magnifySize: 300,
|
|
magnificationLevel: 3
|
|
};
|
|
|
|
cornerstoneTools.magnify.setConfiguration(config);
|
|
});
|
|
|
|
Template.imageViewerViewport.onRendered(function() {
|
|
var templateData = Template.currentData();
|
|
log.info('imageViewerViewport onRendered');
|
|
|
|
// When the imageViewerViewport template is rendered
|
|
var element = this.find('.imageViewerViewport');
|
|
|
|
// Display the loading indicator for this element
|
|
$(element).siblings('.imageViewerLoadingIndicator').css('display', 'block');
|
|
|
|
// Get the current active viewport index, if this viewport has the same index,
|
|
// add the CSS 'active' class to highlight this viewport.
|
|
var activeViewport = Session.get('activeViewport');
|
|
|
|
// Create a data object to pass to the series loading function (loadSeriesIntoViewport)
|
|
var data = {
|
|
element: element,
|
|
viewport: this.data.viewport,
|
|
currentImageIdIndex: this.data.currentImageIdIndex,
|
|
displaySetInstanceUid: this.data.displaySetInstanceUid,
|
|
studyInstanceUid: this.data.studyInstanceUid,
|
|
seriesInstanceUid: this.data.seriesInstanceUid,
|
|
renderedCallback: this.data.renderedCallback,
|
|
activeViewport: activeViewport
|
|
};
|
|
|
|
// If no displaySetInstanceUid was supplied, display the drag/drop
|
|
// instructions and then stop here since we don't know what to display in the viewport.
|
|
if (!this.data.displaySetInstanceUid) {
|
|
element.classList.add('empty');
|
|
$(element).siblings('.imageViewerLoadingIndicator').css('display', 'none');
|
|
$(element).siblings('.viewportInstructions').show();
|
|
return;
|
|
}
|
|
|
|
// Look through the ViewerStudies collection for a
|
|
// study with this studyInstanceUid
|
|
var study = ViewerStudies.findOne({
|
|
studyInstanceUid: this.data.studyInstanceUid
|
|
});
|
|
var displaySetInstanceUid = this.data.displaySetInstanceUid;
|
|
|
|
data.study = study;
|
|
setDisplaySet(data, displaySetInstanceUid, templateData);
|
|
});
|
|
|
|
Template.imageViewerViewport.onDestroyed(function() {
|
|
log.info('imageViewerViewport onDestroyed');
|
|
|
|
// When a viewport element is being destroyed
|
|
var element = this.find('.imageViewerViewport');
|
|
|
|
// Try to stop any currently playing clips
|
|
// Otherwise the interval will continuously throw errors
|
|
try {
|
|
var enabledElement = cornerstone.getEnabledElement(element);
|
|
if (enabledElement) {
|
|
cornerstoneTools.stopClip(element);
|
|
}
|
|
} catch (error) {
|
|
log.warn(error);
|
|
}
|
|
|
|
// Disable the viewport element with Cornerstone
|
|
// This also triggers the removal of the element from all available
|
|
// synchronizers, such as the one used for reference lines.
|
|
cornerstone.disable(element);
|
|
});
|
|
|
|
Template.imageViewerViewport.events({
|
|
'ActivateViewport .imageViewerViewport': function(e) {
|
|
log.info('imageViewerViewport ActivateViewport');
|
|
setActiveViewport(e.currentTarget);
|
|
},
|
|
'click .imageViewerViewport': function(e) {
|
|
var viewportIndex = $('.imageViewerViewport').index(e.currentTarget);
|
|
Session.set('activeViewport', viewportIndex);
|
|
},
|
|
'CornerstoneToolsMouseDoubleClick .imageViewerViewport, CornerstoneToolsDoubleTap .imageViewerViewport': function(e) {
|
|
var viewportIndex = $('.imageViewerViewport').index(e.currentTarget);
|
|
layoutManager.toggleEnlargement(viewportIndex);
|
|
}
|
|
});
|