feat(DoubleClick): double click a viewport to one up and back

extensions/cornerstone/src/init.tsx

@@ -25,6 +25,7 @@ import interleaveCenterLoader from './utils/interleaveCenterLoader';
 import nthLoader from './utils/nthLoader';
 import interleaveTopToBottom from './utils/interleaveTopToBottom';
 import initContextMenu from './initContextMenu';
+import initDoubleClick from './initDoubleClick';
 
 // TODO: Cypress tests are currently grabbing this from the window?
 window.cornerstone = cornerstone;
@@ -104,6 +105,12 @@ export default async function init({
     clearOnModeExit: true,
   });
 
+  // Stores the entire ViewportGridService getState when toggling to one up
+  // (e.g. via a double click) so that it can be restored when toggling back.
+  stateSyncService.register('toggleOneUpViewportGridStore', {
+    clearOnModeExit: true,
+  });
+
   const labelmapRepresentation =
     cornerstoneTools.Enums.SegmentationRepresentations.Labelmap;
 
@@ -198,6 +205,11 @@ export default async function init({
     commandsManager,
   });
 
+  initDoubleClick({
+    customizationService,
+    commandsManager,
+  });
+
   const newStackCallback = evt => {
     const { element } = evt.detail;
     utilities.stackPrefetch.enable(element);

extensions/cornerstone/src/initContextMenu.ts

@@ -1,6 +1,7 @@
 import { eventTarget, EVENTS } from '@cornerstonejs/core';
 import { Enums } from '@cornerstonejs/tools';
 import { setEnabledElement } from './state';
+import { findNearbyToolData } from './utils/findNearbyToolData';
 
 const cs3DToolsEvents = Enums.Events;
 
@@ -47,28 +48,6 @@ function initContextMenu({
   customizationService,
   commandsManager,
 }): void {
-  /**
-   * Finds tool nearby event position triggered.
-   *
-   * @param {Object} commandsManager mannager of commands
-   * @param {Object} event that has being triggered
-   * @returns cs toolData or undefined if not found.
-   */
-  const findNearbyToolData = evt => {
-    if (!evt?.detail) {
-      return;
-    }
-    const { element, currentPoints } = evt.detail;
-    return commandsManager.runCommand(
-      'getNearbyToolData',
-      {
-        element,
-        canvasCoordinates: currentPoints?.canvas,
-      },
-      'CORNERSTONE'
-    );
-  };
-
   /*
    * Run the commands associated with the given button press,
    * defaults on button1 and button2
@@ -80,7 +59,7 @@ function initContextMenu({
     const toRun = customizations[name];
     console.log('initContextMenu::cornerstoneViewportHandleEvent', name, toRun);
     const options = {
-      nearbyToolData: findNearbyToolData(evt),
+      nearbyToolData: findNearbyToolData(commandsManager, evt),
       event: evt,
     };
     commandsManager.run(toRun, options);

extensions/cornerstone/src/initDoubleClick.ts

@@ -0,0 +1,92 @@
+import { eventTarget, EVENTS } from '@cornerstonejs/core';
+import { Enums } from '@cornerstonejs/tools';
+import { CommandsManager, CustomizationService, Types } from '@ohif/core';
+import { findNearbyToolData } from './utils/findNearbyToolData';
+
+const cs3DToolsEvents = Enums.Events;
+
+const DEFAULT_DOUBLE_CLICK = {
+  doubleClick: {
+    commandName: 'toggleOneUp',
+    commandOptions: {},
+  },
+};
+
+/**
+ * Generates a double click event name, consisting of:
+ *    * alt when the alt key is down
+ *    * ctrl when the cctrl key is down
+ *    * shift when the shift key is down
+ *    * 'doubleClick'
+ */
+function getDoubleClickEventName(evt: CustomEvent) {
+  const nameArr = [];
+  if (evt.detail.event.altKey) nameArr.push('alt');
+  if (evt.detail.event.ctrlKey) nameArr.push('ctrl');
+  if (evt.detail.event.shiftKey) nameArr.push('shift');
+  nameArr.push('doubleClick');
+  return nameArr.join('');
+}
+
+export type initDoubleClickArgs = {
+  customizationService: CustomizationService;
+  commandsManager: CommandsManager;
+};
+
+function initDoubleClick({
+  customizationService,
+  commandsManager,
+}: initDoubleClickArgs): void {
+  const cornerstoneViewportHandleDoubleClick = (evt: CustomEvent) => {
+    // Do not allow double click on a tool.
+    const nearbyToolData = findNearbyToolData(commandsManager, evt);
+    if (nearbyToolData) {
+      return;
+    }
+
+    const eventName = getDoubleClickEventName(evt);
+
+    // Allows for the customization of the double click on a viewport.
+    const customizations =
+      customizationService.get('cornerstoneViewportClickCommands') ||
+      DEFAULT_DOUBLE_CLICK;
+
+    const toRun = customizations[eventName];
+
+    if (!toRun) {
+      return;
+    }
+
+    commandsManager.run(toRun);
+  };
+
+  function elementEnabledHandler(evt: CustomEvent) {
+    const { element } = evt.detail;
+
+    element.addEventListener(
+      cs3DToolsEvents.MOUSE_DOUBLE_CLICK,
+      cornerstoneViewportHandleDoubleClick
+    );
+  }
+
+  function elementDisabledHandler(evt: CustomEvent) {
+    const { element } = evt.detail;
+
+    element.removeEventListener(
+      cs3DToolsEvents.MOUSE_DOUBLE_CLICK,
+      cornerstoneViewportHandleDoubleClick
+    );
+  }
+
+  eventTarget.addEventListener(
+    EVENTS.ELEMENT_ENABLED,
+    elementEnabledHandler.bind(null)
+  );
+
+  eventTarget.addEventListener(
+    EVENTS.ELEMENT_DISABLED,
+    elementDisabledHandler.bind(null)
+  );
+}
+
+export default initDoubleClick;

extensions/cornerstone/src/utils/findNearbyToolData.ts

@@ -0,0 +1,21 @@
+/**
+ * Finds tool nearby event position triggered.
+ *
+ * @param {Object} commandsManager mannager of commands
+ * @param {Object} event that has being triggered
+ * @returns cs toolData or undefined if not found.
+ */
+export const findNearbyToolData = (commandsManager, evt) => {
+  if (!evt?.detail) {
+    return;
+  }
+  const { element, currentPoints } = evt.detail;
+  return commandsManager.runCommand(
+    'getNearbyToolData',
+    {
+      element,
+      canvasCoordinates: currentPoints?.canvas,
+    },
+    'CORNERSTONE'
+  );
+};

extensions/default/src/commandsModule.ts

@@ -1,4 +1,4 @@
-import { ServicesManager, Types } from '@ohif/core';
+import { ServicesManager, utils } from '@ohif/core';
 
 import {
   ContextMenuController,
@@ -12,6 +12,8 @@ import findViewportsByPosition, {
 
 import { ContextMenuProps } from './CustomizeableContextMenu/types';
 
+const { subscribeToNextViewportGridChange } = utils;
+
 export type HangingProtocolParams = {
   protocolId?: string;
   stageIndex?: number;
@@ -159,12 +161,14 @@ const commandsModule = ({
      * @param options.protocolId - the protocol ID to change to
      * @param options.stageId - the stageId to apply
      * @param options.stageIndex - the index of the stage to go to.
+     * @param options.reset - flag to indicate if the HP should be reset to its original and not restored to a previous state
      */
     setHangingProtocol: ({
       activeStudyUID = '',
       protocolId,
       stageId,
       stageIndex,
+      reset = false,
     }: HangingProtocolParams): boolean => {
       try {
         // Stores in the state the reuseID to displaySetUID mapping
@@ -210,10 +214,11 @@ const commandsModule = ({
           hangingProtocolService.setActiveStudyUID(activeStudyUID);
         }
 
-        const storedHanging = `${hangingProtocolService.getState().activeStudyUID
+        const storedHanging = `${
+          hangingProtocolService.getState().activeStudyUID
         }:${protocolId}:${useStageIdx || 0}`;
 
-        const restoreProtocol = !!viewportGridStore[storedHanging];
+        const restoreProtocol = !reset && viewportGridStore[storedHanging];
 
         if (
           protocolId === hpInfo.protocolId &&
@@ -273,8 +278,9 @@ const commandsModule = ({
         activeStudy,
       } = hangingProtocolService.getActiveProtocol();
       const { toggleHangingProtocol } = stateSyncService.getState();
-      const storedHanging = `${activeStudy.StudyInstanceUID
-        }:${protocolId}:${stageIndex | 0}`;
+      const storedHanging = `${
+        activeStudy.StudyInstanceUID
+      }:${protocolId}:${stageIndex | 0}`;
       if (
         protocol.id === protocolId &&
         (stageIndex === undefined || stageIndex === desiredStageIndex)
@@ -294,7 +300,11 @@ const commandsModule = ({
             },
           },
         });
-        return actions.setHangingProtocol({ protocolId, stageIndex });
+        return actions.setHangingProtocol({
+          protocolId,
+          stageIndex,
+          reset: true,
+        });
       }
     },
 
@@ -365,6 +375,111 @@ const commandsModule = ({
       window.setTimeout(completeLayout, 0);
     },
 
+    toggleOneUp() {
+      const viewportGridState = viewportGridService.getState();
+      const { activeViewportIndex, viewports, layout } = viewportGridState;
+      const {
+        displaySetInstanceUIDs,
+        displaySetOptions,
+        viewportOptions,
+      } = viewports[activeViewportIndex];
+
+      if (layout.numCols === 1 && layout.numRows === 1) {
+        // The viewer is in one-up. Check if there is a state to restore/toggle back to.
+        const { toggleOneUpViewportGridStore } = stateSyncService.getState();
+
+        if (!toggleOneUpViewportGridStore.layout) {
+          return;
+        }
+        // There is a state to toggle back to. The viewport that was
+        // originally toggled to one up was the former active viewport.
+        const viewportIndexToUpdate =
+          toggleOneUpViewportGridStore.activeViewportIndex;
+
+        // Determine which viewports need to be updated. This is particularly
+        // important when MPR is toggled to one up and a different reconstructable
+        // is swapped in. Note that currently HangingProtocolService.getViewportsRequireUpdate
+        // does not support viewport with multiple display sets.
+        const updatedViewports =
+          displaySetInstanceUIDs.length > 1
+            ? []
+            : displaySetInstanceUIDs
+                .map(displaySetInstanceUID =>
+                  hangingProtocolService.getViewportsRequireUpdate(
+                    viewportIndexToUpdate,
+                    displaySetInstanceUID
+                  )
+                )
+                .flat();
+
+        // This findOrCreateViewport returns either one of the updatedViewports
+        // returned from the HP service OR if there is not one from the HP service then
+        // simply returns what was in the previous state.
+        const findOrCreateViewport = (viewportIndex: number) => {
+          const viewport = updatedViewports.find(
+            viewport => viewport.viewportIndex === viewportIndex
+          );
+
+          return viewport
+            ? { viewportOptions, displaySetOptions, ...viewport }
+            : toggleOneUpViewportGridStore.viewports[viewportIndex];
+        };
+
+        const layoutOptions = viewportGridService.getLayoutOptionsFromState(
+          toggleOneUpViewportGridStore
+        );
+
+        // Restore the previous layout including the active viewport.
+        viewportGridService.setLayout({
+          numRows: toggleOneUpViewportGridStore.layout.numRows,
+          numCols: toggleOneUpViewportGridStore.layout.numCols,
+          activeViewportIndex: viewportIndexToUpdate,
+          layoutOptions,
+          findOrCreateViewport,
+        });
+      } else {
+        // We are not in one-up, so toggle to one up.
+
+        // Store the current viewport grid state so we can toggle it back later.
+        stateSyncService.store({
+          toggleOneUpViewportGridStore: viewportGridState,
+        });
+
+        // This findOrCreateViewport only return one viewport - the active
+        // one being toggled to one up.
+        const findOrCreateViewport = () => {
+          return {
+            displaySetInstanceUIDs,
+            displaySetOptions,
+            viewportOptions,
+          };
+        };
+
+        // Set the layout to be 1x1/one-up.
+        viewportGridService.setLayout({
+          numRows: 1,
+          numCols: 1,
+          findOrCreateViewport,
+        });
+
+        // Subscribe to ANY (i.e. manual and hanging protocol) layout changes so that
+        // any grid layout state to toggle to from one up is cleared. This is performed on
+        // a timeout to avoid clearing the state for the actual to one up change.
+        // Whenever the next layout change event is fired, the subscriptions are unsubscribed.
+        const clearToggleOneUpViewportGridStore = () => {
+          const toggleOneUpViewportGridStore = {};
+          stateSyncService.store({
+            toggleOneUpViewportGridStore,
+          });
+        };
+
+        subscribeToNextViewportGridChange(
+          viewportGridService,
+          clearToggleOneUpViewportGridStore
+        );
+      }
+    },
+
     openDICOMTagViewer() {
       const { activeViewportIndex, viewports } = viewportGridService.getState();
       const activeViewportSpecificData = viewports[activeViewportIndex];
@@ -440,6 +555,11 @@ const commandsModule = ({
       storeContexts: [],
       options: {},
     },
+    toggleOneUp: {
+      commandFn: actions.toggleOneUp,
+      storeContexts: [],
+      options: {},
+    },
     openDICOMTagViewer: {
       commandFn: actions.openDICOMTagViewer,
     },

extensions/measurement-tracking/src/viewports/TrackedCornerstoneViewport.tsx

@@ -80,7 +80,7 @@ function TrackedCornerstoneViewport(props) {
       return;
     }
 
-    annotation.config.style.setViewportToolStyles(`viewport-${viewportIndex}`, {
+    annotation.config.style.setViewportToolStyles(viewportId, {
       global: {
         lineDash: '4,4',
       },