499 lines
20 KiB
JavaScript
499 lines
20 KiB
JavaScript
import { OHIF } from 'meteor/ohif:core';
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import { Viewerbase } from 'meteor/ohif:viewerbase';
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import { cornerstone, cornerstoneMath, cornerstoneTools } from 'meteor/ohif:cornerstone';
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const toolDefaultStates = Viewerbase.toolManager.getToolDefaultStates();
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const textBoxConfig = toolDefaultStates.textBoxConfig;
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const configuration = {
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getMeasurementLocationCallback,
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changeMeasurementLocationCallback,
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drawHandles: false,
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drawHandlesOnHover: true,
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arrowFirst: true,
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textBox: textBoxConfig
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};
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// Used to cancel tool placement
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const keys = { ESC: 27 };
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// Define a callback to get your text annotation
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// This could be used, e.g. to open a modal
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function getMeasurementLocationCallback(measurementData, eventData, doneCallback) {
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doneCallback(window.prompt('Enter your lesion location:'));
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}
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function changeMeasurementLocationCallback(measurementData, eventData, doneCallback) {
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doneCallback(window.prompt('Change your lesion location:'));
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}
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function createQualitativeTargetTool(toolType, responseText='') {
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const toolInterface = { toolType };
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const response = responseText;
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/// --- Mouse Tool --- ///
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///////// BEGIN ACTIVE TOOL ///////
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function addNewMeasurement(mouseEventData) {
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const { element } = mouseEventData;
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const $element = $(element);
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function doneCallback() {
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measurementData.active = true;
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cornerstone.updateImage(element);
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}
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const measurementData = createNewMeasurement(mouseEventData);
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measurementData.viewport = cornerstone.getViewport(element);
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const tool = cornerstoneTools[toolType];
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const config = tool.getConfiguration();
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// associate this data with this imageId so we can render it and manipulate it
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cornerstoneTools.addToolState(element, toolType, measurementData);
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const disableDefaultHandlers = () => {
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// since we are dragging to another place to drop the end point, we can just activate
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// the end point and let the moveHandle move it for us.
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element.removeEventListener('cornerstonetoolsmousemove', tool.mouseMoveCallback);
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element.removeEventListener('cornerstonetoolsmousedown', tool.mouseDownCallback);
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element.removeEventListener('cornerstonetoolsmousedownactivate', tool.mouseDownActivateCallback);
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element.removeEventListener('cornerstonetoolsmousedoubleclick', doubleClickCallback);
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};
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disableDefaultHandlers();
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// Add a flag for using Esc to cancel tool placement
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let cancelled = false;
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const cancelAction = () => {
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cancelled = true;
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cornerstoneTools.removeToolState(element, toolType, measurementData);
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};
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// Add a flag for using Esc to cancel tool placement
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const keyDownHandler = event => {
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// If the Esc key was pressed, set the flag to true
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if (event.which === keys.ESC) {
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cancelAction();
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}
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// Don't propagate this keydown event so it can't interfere
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// with anything outside of this tool
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return false;
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};
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// Bind a one-time event listener for the Esc key
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$(element).one('keydown', keyDownHandler);
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// Bind a mousedown handler to cancel the measurement if it's zero-sized
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const mousedownHandler = () => {
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const { start, end } = measurementData.handles;
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if (!cornerstoneMath.point.distance(start, end)) {
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cancelAction();
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}
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};
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// Bind a one-time event listener for mouse down
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$element.one('mousedown', mousedownHandler);
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// Keep the current image and create a handler for new rendered images
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const currentImage = cornerstone.getImage(element);
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const currentViewport = cornerstone.getViewport(element);
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const imageRenderedHandler = () => {
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const newImage = cornerstone.getImage(element);
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// Check if the rendered image changed during measurement creation and delete it if so
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if (newImage.imageId !== currentImage.imageId) {
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cornerstone.displayImage(element, currentImage, currentViewport);
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cancelAction();
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cornerstone.displayImage(element, newImage, currentViewport);
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}
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};
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// Bind the event listener for image rendering
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element.addEventListener('cornerstoneimagerendered', imageRenderedHandler);
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// Bind the tool deactivation and enlargement handlers
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element.addEventListener('cornerstonetoolstooldeactivated', cancelAction);
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$element.one('ohif.viewer.viewport.toggleEnlargement', cancelAction);
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cornerstone.updateImage(element);
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cornerstoneTools.moveNewHandle(mouseEventData, toolType, measurementData, measurementData.handles.end, function() {
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if (cancelled || cornerstoneTools.anyHandlesOutsideImage(mouseEventData, measurementData.handles)) {
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// delete the measurement
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cornerstoneTools.removeToolState(mouseEventData.element, toolType, measurementData);
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} else {
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config.getMeasurementLocationCallback(measurementData, mouseEventData, doneCallback);
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}
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// Unbind the Esc keydown hook
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$element.off('keydown', keyDownHandler);
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// Unbind the mouse down hook
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$element.off('mousedown', mousedownHandler);
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// Unbind the event listener for image rendering
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element.removeEventListener('cornerstoneimagerendered', imageRenderedHandler);
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// Unbind the tool deactivation and enlargement handlers
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element.removeEventListener('cornerstonetoolstooldeactivated', cancelAction);
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$element.off('ohif.viewer.viewport.toggleEnlargement', cancelAction);
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// Disable the default handlers and re-enable again
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disableDefaultHandlers();
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element.addEventListener('cornerstonetoolsmousemove', tool.mouseMoveCallback);
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element.addEventListener('cornerstonetoolsmousedown', tool.mouseDownCallback);
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element.addEventListener('cornerstonetoolsmousedownactivate', tool.mouseDownActivateCallback);
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element.addEventListener('cornerstonetoolsmousedoubleclick', doubleClickCallback);
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cornerstone.updateImage(element);
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});
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}
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function createNewMeasurement(mouseEventData) {
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const imageId = mouseEventData.image.imageId;
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// Get studyInstanceUid
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const study = cornerstone.metaData.get('study', imageId);
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const studyInstanceUid = study.studyInstanceUid;
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const patientId = study.patientId;
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// Get seriesInstanceUid
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const series = cornerstone.metaData.get('series', imageId);
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const seriesInstanceUid = series.seriesInstanceUid;
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// create the measurement data for this tool with the end handle activated
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const measurementData = {
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isCreating: true,
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visible: true,
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active: true,
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handles: {
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start: {
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x: mouseEventData.currentPoints.image.x,
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y: mouseEventData.currentPoints.image.y,
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allowedOutsideImage: true,
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highlight: true,
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active: false
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},
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end: {
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x: mouseEventData.currentPoints.image.x,
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y: mouseEventData.currentPoints.image.y,
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allowedOutsideImage: true,
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highlight: true,
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active: false
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},
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textBox: {
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x: mouseEventData.currentPoints.image.x - 50,
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y: mouseEventData.currentPoints.image.y - 50,
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active: false,
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movesIndependently: false,
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drawnIndependently: true,
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allowedOutsideImage: true,
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hasBoundingBox: true
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}
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},
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imageId: imageId,
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seriesInstanceUid: seriesInstanceUid,
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studyInstanceUid: studyInstanceUid,
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patientId: patientId,
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response: response,
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isTarget: true,
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toolType: toolType
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};
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return measurementData;
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}
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///////// END ACTIVE TOOL ///////
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function pointNearTool(element, data, coords) {
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const lineSegment = {
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start: cornerstone.pixelToCanvas(element, data.handles.start),
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end: cornerstone.pixelToCanvas(element, data.handles.end)
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};
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const distanceToPoint = cornerstoneMath.lineSegment.distanceToPoint(lineSegment, coords);
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if (cornerstoneTools.pointInsideBoundingBox(data.handles.textBox, coords)) {
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return true;
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}
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return distanceToPoint < 25;
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}
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function drawDottedArrow(context, start, end, color, lineWidth) {
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//variables to be used when creating the arrow
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const headLength = 10;
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const angle = Math.atan2(end.y - start.y, end.x - start.x);
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//starting path of the arrow from the start square to the end square and drawing the stroke
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context.beginPath();
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context.moveTo(start.x, start.y);
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context.lineTo(end.x, end.y);
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context.strokeStyle = color;
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context.lineWidth = lineWidth;
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//context.setLineDash([ 2, 3 ]);
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context.stroke();
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//starting a new path from the head of the arrow to one of the sides of the point
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context.beginPath();
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context.moveTo(end.x, end.y);
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context.lineTo(end.x - headLength * Math.cos(angle - Math.PI / 7), end.y - headLength * Math.sin(angle - Math.PI / 7));
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//path from the side point of the arrow, to the other side point
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context.lineTo(end.x - headLength * Math.cos(angle + Math.PI / 7), end.y - headLength * Math.sin(angle + Math.PI / 7));
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//path from the side point back to the tip of the arrow, and then again to the opposite side point
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context.lineTo(end.x, end.y);
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context.lineTo(end.x - headLength * Math.cos(angle - Math.PI / 7), end.y - headLength * Math.sin(angle - Math.PI / 7));
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//draws the paths created above
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context.strokeStyle = color;
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context.lineWidth = lineWidth;
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context.stroke();
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context.fillStyle = color;
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context.fill();
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}
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///////// BEGIN IMAGE RENDERING ///////
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function onImageRendered(e) {
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const eventData = e.detail;
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const { element } = eventData;
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// if we have no toolData for this element, return immediately as there is nothing to do
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const toolData = cornerstoneTools.getToolState(element, toolType);
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if (!toolData) return;
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// we have tool data for this element - iterate over each one and draw it
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const context = eventData.canvasContext.canvas.getContext('2d');
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context.setTransform(1, 0, 0, 1, 0, 0);
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let color;
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const lineWidth = cornerstoneTools.toolStyle.getToolWidth();
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const config = cornerstoneTools[toolType].getConfiguration();
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for (let i = 0; i < toolData.data.length; i++) {
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const data = toolData.data[i];
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if (data.visible === false) {
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continue;
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}
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context.save();
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// configurable shadow from CornerstoneTools
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if (config && config.shadow) {
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context.shadowColor = config.shadowColor || '#000000';
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context.shadowOffsetX = config.shadowOffsetX || 1;
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context.shadowOffsetY = config.shadowOffsetY || 1;
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}
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if (data.active) {
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color = cornerstoneTools.toolColors.getActiveColor();
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} else {
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color = cornerstoneTools.toolColors.getToolColor();
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}
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// Draw the arrow
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const handleStartCanvas = cornerstone.pixelToCanvas(element, data.handles.start);
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const handleEndCanvas = cornerstone.pixelToCanvas(element, data.handles.end);
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const canvasTextLocation = cornerstone.pixelToCanvas(element, data.handles.textBox);
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drawDottedArrow(context, handleEndCanvas, handleStartCanvas, color, lineWidth);
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if (config.drawHandles) {
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cornerstoneTools.drawHandles(context, eventData, data.handles, color);
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} else if (config.drawHandlesOnHover && data.handles.start.active) {
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cornerstoneTools.drawHandles(context, eventData, [data.handles.start], color);
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} else if (config.drawHandlesOnHover && data.handles.end.active) {
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cornerstoneTools.drawHandles(context, eventData, [data.handles.end], color);
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}
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// Draw the text
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if (data.measurementNumber) {
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const textLines = [`Target ${data.measurementNumber}`, response];
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const boundingBox = cornerstoneTools.drawTextBox(
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context,
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textLines,
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canvasTextLocation.x,
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canvasTextLocation.y,
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color,
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config.textBox
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);
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data.handles.textBox.boundingBox = boundingBox;
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OHIF.cornerstone.repositionTextBox(eventData, data, config.textBox);
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// Draw linked line as dashed
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const link = {
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start: {},
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end: {}
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};
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const midpointCanvas = {
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x: (handleStartCanvas.x + handleEndCanvas.x) / 2,
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y: (handleStartCanvas.y + handleEndCanvas.y) / 2,
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};
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const points = [ handleStartCanvas, handleEndCanvas, midpointCanvas ];
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link.end.x = canvasTextLocation.x;
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link.end.y = canvasTextLocation.y;
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link.start = cornerstoneMath.point.findClosestPoint(points, link.end);
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const boundingBoxPoints = [ {
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// Top middle point of bounding box
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x: boundingBox.left + boundingBox.width / 2,
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y: boundingBox.top
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}, {
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// Left middle point of bounding box
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x: boundingBox.left,
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y: boundingBox.top + boundingBox.height / 2
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}, {
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// Bottom middle point of bounding box
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x: boundingBox.left + boundingBox.width / 2,
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y: boundingBox.top + boundingBox.height
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}, {
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// Right middle point of bounding box
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x: boundingBox.left + boundingBox.width,
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y: boundingBox.top + boundingBox.height / 2
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},
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];
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link.end = cornerstoneMath.point.findClosestPoint(boundingBoxPoints, link.start);
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context.beginPath();
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context.strokeStyle = color;
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context.lineWidth = lineWidth;
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context.setLineDash([ 2, 3 ]);
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context.moveTo(link.start.x, link.start.y);
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context.lineTo(link.end.x, link.end.y);
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context.stroke();
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}
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context.restore();
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}
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}
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// ---- Touch tool ----
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///////// BEGIN ACTIVE TOOL ///////
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function addNewMeasurementTouch(touchEventData) {
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const { element } = touchEventData;
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function doneCallback() {
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measurementData.active = true;
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cornerstone.updateImage(element);
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}
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const measurementData = createNewMeasurement(touchEventData);
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cornerstoneTools.addToolState(element, toolType, measurementData);
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const touchTool = cornerstoneTools[toolType + 'Touch'];
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element.removeEventListener('cornerstonetoolstouchdrag', touchTool.touchMoveHandle);
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element.removeEventListener('cornerstonetoolsdragstartactive', touchTool.touchDownActivateCallback);
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element.removeEventListener('cornerstonetoolstap', touchTool.tapCallback);
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const config = cornerstoneTools[toolType].getConfiguration();
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cornerstone.updateImage(element);
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cornerstoneTools.moveNewHandleTouch(touchEventData, toolType, measurementData, measurementData.handles.end, function() {
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cornerstone.updateImage(element);
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if (cornerstoneTools.anyHandlesOutsideImage(touchEventData, measurementData.handles)) {
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// delete the measurement
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cornerstoneTools.removeToolState(element, toolType, measurementData);
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}
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config.getMeasurementLocationCallback(measurementData, touchEventData, doneCallback);
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element.addEventListener('cornerstonetoolstouchdrag', touchTool.touchMoveHandle);
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element.addEventListener('cornerstonetoolsdragstartactive', touchTool.touchDownActivateCallback);
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element.addEventListener('cornerstonetoolstap', touchTool.tapCallback);
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});
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}
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function doubleClickCallback(e) {
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const eventData = e.detail;
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const { element } = eventData;
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let data;
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function doneCallback(data, deleteTool) {
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if (deleteTool === true) {
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cornerstoneTools.removeToolState(element, toolType, data);
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cornerstone.updateImage(element);
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return;
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}
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data.active = false;
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cornerstone.updateImage(element);
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}
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if (e.data && e.data.mouseButtonMask && !cornerstoneTools.isMouseButtonEnabled(eventData.which, e.data.mouseButtonMask)) {
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return false;
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}
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// Check if the element is enabled and stop here if not
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try {
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cornerstone.getEnabledElement(element);
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} catch (error) {
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return;
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}
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const config = cornerstoneTools[toolType].getConfiguration();
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const coords = eventData.currentPoints.canvas;
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const toolData = cornerstoneTools.getToolState(element, toolType);
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// now check to see if there is a handle we can move
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if (!toolData) {
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return;
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}
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for (let i = 0; i < toolData.data.length; i++) {
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data = toolData.data[i];
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if (pointNearTool(element, data, coords)) {
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data.active = true;
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cornerstone.updateImage(element);
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// Allow relabelling via a callback
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config.changeMeasurementLocationCallback(data, eventData, doneCallback);
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e.stopImmediatePropagation();
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return false;
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}
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}
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}
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toolInterface.mouse = cornerstoneTools.mouseButtonTool({
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addNewMeasurement: addNewMeasurement,
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createNewMeasurement: createNewMeasurement,
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onImageRendered: onImageRendered,
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pointNearTool: pointNearTool,
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toolType: toolType,
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mouseDoubleClickCallback: doubleClickCallback
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});
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toolInterface.touch = cornerstoneTools.touchTool({
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addNewMeasurement: addNewMeasurementTouch,
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createNewMeasurement: createNewMeasurement,
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onImageRendered: onImageRendered,
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pointNearTool: pointNearTool,
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toolType: toolType
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// pressCallback: doubleClickCallback
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});
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return toolInterface;
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}
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const targetCRInterface = createQualitativeTargetTool('targetCR', 'CR');
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cornerstoneTools.targetCR = targetCRInterface.mouse;
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cornerstoneTools.targetCR.setConfiguration(configuration);
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cornerstoneTools.targetCRTouch = targetCRInterface.touch;
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const targetUNInterface = createQualitativeTargetTool('targetUN', 'UN');
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cornerstoneTools.targetUN = targetUNInterface.mouse;
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cornerstoneTools.targetUN.setConfiguration(configuration);
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cornerstoneTools.targetUNTouch = targetUNInterface.touch;
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OHIF.lesiontracker.createQualitativeTargetTool = createQualitativeTargetTool;
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