OHIF-110: creating the context-menu for measurements in the viewport for desktop and mobile. Coded action delete (#112)

Packages/ohif-core/client/components/base/mixins/dropdown.js

@@ -105,11 +105,20 @@ OHIF.mixins.dropdown = new OHIF.Mixin({
 
                 // Change the dropdown position if mouse event was given
                 if (event) {
+                    const originalEventTouches = event.originalEvent.touches;
                     const position = {
-                        left: event.clientX,
-                        top: event.clientY
+                      left: 0,
+                      top: 0
                     };
 
+                    if (originalEventTouches && originalEventTouches.length > 0) {
+                        position.left = originalEventTouches[0].pageX;
+                        position.top = originalEventTouches[0].pageY;
+                    } else {
+                        position.left = event.clientX;
+                        position.top = event.clientY
+                    }
+
                     if (centered) {
                         // Center the dropdown menu based on the event mouse position
                         position.left -= $dropdownMenu.outerWidth() / 2;

Packages/ohif-viewerbase/client/components/viewer/toolContextMenu/toolContextMenu.js

@@ -0,0 +1,70 @@
+import { Template } from 'meteor/templating';
+import { ReactiveVar } from 'meteor/reactive-var';
+import { toolManager } from '../../../lib/toolManager';
+
+const toolTypes = ['length', 'simpleAngle', 'probe', 'ellipticalRoi', 'rectangleRoi', 'arrowAnnotate'];
+const TypeToLabelMap = {
+    length: 'Length',
+    simpleAngle: 'Angle',
+    probe: 'Probe',
+    ellipticalRoi: 'Elliptical ROI',
+    rectangleRoi: 'Rectangle ROI',
+    arrowAnnotate: 'Annotation'
+};
+let dropdownItems = [{
+    actionType: 'Delete',
+    action: ({nearbyToolData, eventData}) => {
+        const element = eventData.element
+
+        cornerstoneTools.removeToolState(element, nearbyToolData.toolType, nearbyToolData.tool);
+        cornerstone.updateImage(element);
+    }
+}];
+let timer = 0;
+
+const getTypeText = function(toolData, actionType) {
+    const toolType = toolData.toolType;
+    let message = `${TypeToLabelMap[toolType]}`;
+
+    if (toolType === 'arrowAnnotate') {
+        message = `${message} "${toolData.tool.text}"`
+    }
+
+    return `${actionType} ${message}`;
+};
+
+const createDropdown = function (event, eventData, isTouchEvent = false) {
+    const nearbyToolData = toolManager.getNearbyToolData(eventData.element, eventData.currentPoints.canvas, toolTypes);
+
+    // Annotate tools for touch events already have a press handle to edit it, has a better UX for deleting it
+    if (isTouchEvent && nearbyToolData.toolType === 'arrowAnnotate') {
+      return;
+    }
+
+    if (nearbyToolData) {
+        dropdownItems.forEach(function(item) {
+            item.params = {
+                eventData,
+                nearbyToolData
+            };
+            item.text = getTypeText(nearbyToolData, item.actionType);
+        });
+
+        OHIF.ui.showDropdown(dropdownItems, {
+            menuClasses: 'dropdown-menu-left',
+            event: eventData.event
+        });
+    }
+};
+
+Template.viewerMain.events({
+    'CornerstoneToolsMouseClick .imageViewerViewport'(event, instance, eventData) {
+        if (event.which === 3) {
+            createDropdown(event, eventData);
+        }
+    },
+
+    'CornerstoneToolsTouchPress .imageViewerViewport'(event, instance, eventData) {
+        createDropdown(event, eventData, true);
+    }
+});

Packages/ohif-viewerbase/client/lib/toolManager.js

@@ -6,6 +6,7 @@ import { updateCrosshairsSynchronizer } from './updateCrosshairsSynchronizer';
 import { crosshairsSynchronizers } from './crosshairsSynchronizers';
 import { annotateTextUtils } from './annotateTextUtils';
 import { textMarkerUtils } from './textMarkerUtils';
+import { isTouchDevice } from './helpers/isTouchDevice';
 
 let defaultTool = 'wwwc';
 let activeTool;
@@ -446,6 +447,51 @@ export const toolManager = {
         Session.set('ToolManagerActiveTool', tool);
     },
 
+    getNearbyToolData(element, coords, toolTypes) {
+        const allTools = this.getTools();
+        const touchDevice = isTouchDevice();
+        const nearbyTool = {};
+        let pointNearTool = false;
+
+        toolTypes.forEach(function(toolType) {
+            const toolData = cornerstoneTools.getToolState(element, toolType);
+            if (!toolData) {
+                return;
+            }
+
+            toolData.data.forEach(function(data, index) {
+                let toolInterfaceName = toolType;
+                let toolInterface;
+
+                // Edge cases where the tool is not the same as the typeName
+                if (toolType === 'simpleAngle') {
+                  toolInterfaceName = 'angle';
+                } else if (toolType === 'arrowAnnotate') {
+                  toolInterfaceName = 'annotate';
+                }
+
+                if (touchDevice) {
+                    toolInterface = allTools[toolInterfaceName].touch;
+                } else {
+                    toolInterface = allTools[toolInterfaceName].mouse;
+                }
+
+                if (toolInterface.pointNearTool(element, data, coords)) {
+                    pointNearTool = true;
+                    nearbyTool.tool = data;
+                    nearbyTool.index = index;
+                    nearbyTool.toolType = toolType;
+                }
+            });
+
+            if (pointNearTool) {
+                return false;
+            }
+        });
+
+        return pointNearTool ? nearbyTool : undefined;
+    },
+
     getActiveTool() {
         if (!initialized) {
             toolManager.init();

Packages/ohif-viewerbase/package.js

@@ -146,6 +146,8 @@ Package.onUse(function(api) {
     api.addFiles('client/components/viewer/viewerMain/viewerMain.js', 'client');
     api.addFiles('client/components/viewer/viewerMain/viewerMain.styl', 'client');
 
+    api.addFiles('client/components/viewer/toolContextMenu/toolContextMenu.js', 'client');
+
     api.addFiles('client/components/viewer/imageControls/imageControls.html', 'client');
     api.addFiles('client/components/viewer/imageControls/imageControls.js', 'client');
     api.addFiles('client/components/viewer/imageControls/imageControls.styl', 'client');