state of CornerstoneViewport does not update

[aamirsahmad]

If the state is updated (tools or imageIds) from the parent object, React does not re-render the CornerstoneViewport component to reflect the changes.

A common use case is to use the Pan tool and Length tool with both bound to the left mouse button. This can be achieved with a toggle button that updates the state by making Pan Tool's status be passive and Length Tool's status to be active. Currently, this is not possible as the state of CornerstoneViewport does not gets updated.

state = {
  tools: [
    // Mouse
    {
      name: 'Wwwc',
      mode: 'active',
      modeOptions: { mouseButtonMask: 1 },
    },
    {
      name: 'Zoom',
      mode: 'active',
      modeOptions: { mouseButtonMask: 2 },
    },
    {
      name: 'Pan',
      mode: 'active',
      modeOptions: { mouseButtonMask: 4 },
    },
    // Scroll
    { name: 'StackScrollMouseWheel', mode: 'active' },
    // Touch
    { name: 'PanMultiTouch', mode: 'active' },
    { name: 'ZoomTouchPinch', mode: 'active' },
    { name: 'StackScrollMultiTouch', mode: 'active' },
  ],
  imageIds: [
    'dicomweb://s3.amazonaws.com/lury/PTCTStudy/1.3.6.1.4.1.25403.52237031786.3872.20100510032220.11.dcm',
    'dicomweb://s3.amazonaws.com/lury/PTCTStudy/1.3.6.1.4.1.25403.52237031786.3872.20100510032220.12.dcm',
  ],
};

{/* RENDER */}
<CornerstoneViewport
  tools={this.state.tools}
  imageIds={this.state.imageIds}
  style={{ minWidth: '100%', height: '512px', flex: '1' }}
/>

This can be reproduced at https://react.cornerstonejs.org/basic
Change the state of ExamplePageBasic using the React Developer Tools in Chrome.

[coderdecoder]

Any updates on this or a direction to look in? I'm having the same issue.

[burnpiro]

The current version of the Viewer does not support updates of tools prop. Once you've set them when initializing the component they are unchanged during the component's lifecycle. The only thing you can do is to change activeTool and/or frameRate, isPlaying, isOverlayVisible props. That and the imageId stack ofc. The rest is not even in the update lifecycle.