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* fix default displayset options * add viewport overlay * apply review comments
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extensions/cornerstone-3d/src/Viewport/CornerstoneOverlay.tsx
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import React, { useCallback, useEffect, useState } from 'react'; | ||
import PropTypes from 'prop-types'; | ||
import { metaData, Enums, utilities } from '@cornerstonejs/core'; | ||
import { ViewportOverlay } from '@ohif/ui'; | ||
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import Cornerstone3DViewportService from '../services/ViewportService/Cornerstone3DViewportService'; | ||
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function CornerstoneOverlay({ | ||
viewportData, | ||
imageIndex, | ||
viewportIndex, | ||
ToolBarService, | ||
}) { | ||
const [voi, setVOI] = useState({ windowCenter: null, windowWidth: null }); | ||
const [scale, setScale] = useState(1); | ||
const [activeTools, setActiveTools] = useState([]); | ||
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const getCornerstoneViewport = useCallback( | ||
viewportIndex => { | ||
const viewportInfo = Cornerstone3DViewportService.getViewportInfoByIndex( | ||
viewportIndex | ||
); | ||
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if (!viewportInfo) { | ||
return; | ||
} | ||
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const viewportId = viewportInfo.getViewportId(); | ||
const viewport = Cornerstone3DViewportService.getCornerstone3DViewport( | ||
viewportId | ||
); | ||
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return viewport; | ||
}, | ||
[viewportIndex, viewportData] | ||
); | ||
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/** | ||
* Initial toolbar state | ||
*/ | ||
useEffect(() => { | ||
setActiveTools(ToolBarService.getActiveTools()); | ||
}, []); | ||
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/** | ||
* Updating the VOI when the viewport changes its voi | ||
*/ | ||
useEffect(() => { | ||
const viewport = getCornerstoneViewport(viewportIndex); | ||
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if (!viewport) { | ||
return; | ||
} | ||
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const { element } = viewport; | ||
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const updateVOI = eventDetail => { | ||
const { range } = eventDetail.detail; | ||
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if (!range) { | ||
return; | ||
} | ||
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const { lower, upper } = range; | ||
const { windowWidth, windowCenter } = utilities.windowLevel.toWindowLevel( | ||
lower, | ||
upper | ||
); | ||
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setVOI({ windowCenter, windowWidth }); | ||
}; | ||
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element.addEventListener(Enums.Events.VOI_MODIFIED, updateVOI); | ||
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return () => { | ||
element.removeEventListener(Enums.Events.VOI_MODIFIED, updateVOI); | ||
}; | ||
}, [viewportIndex, viewportData]); | ||
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/** | ||
* Updating the scale when the viewport changes its zoom | ||
*/ | ||
useEffect(() => { | ||
const viewport = getCornerstoneViewport(viewportIndex); | ||
if (!viewport) { | ||
return; | ||
} | ||
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const { element } = viewport; | ||
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const updateScale = eventDetail => { | ||
const { previousCamera, camera } = eventDetail.detail; | ||
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if (previousCamera.parallelScale !== camera.parallelScale) { | ||
const viewport = getCornerstoneViewport(viewportIndex); | ||
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const { dimensions, spacing } = viewport.getImageData(); | ||
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// Todo: handle for the volume viewports with directions | ||
const scale = (dimensions[0] * spacing[0]) / camera.parallelScale; | ||
setScale(scale); | ||
} | ||
}; | ||
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element.addEventListener(Enums.Events.CAMERA_MODIFIED, updateScale); | ||
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return () => { | ||
element.removeEventListener(Enums.Events.CAMERA_MODIFIED, updateScale); | ||
}; | ||
}, [viewportIndex, viewportData]); | ||
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/** | ||
* Updating the active tools when the toolbar changes | ||
*/ | ||
// Todo: this should act on the toolGroups instead of the toolbar state | ||
useEffect(() => { | ||
const { unsubscribe } = ToolBarService.subscribe( | ||
ToolBarService.EVENTS.TOOL_BAR_STATE_MODIFIED, | ||
() => { | ||
setActiveTools(ToolBarService.getActiveTools()); | ||
} | ||
); | ||
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return () => { | ||
unsubscribe(); | ||
}; | ||
}, [ToolBarService]); | ||
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const getTopLeftContent = useCallback(() => { | ||
const { windowWidth, windowCenter } = voi; | ||
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if (activeTools.includes('WindowLevel')) { | ||
if (typeof windowCenter !== 'number' || typeof windowWidth !== 'number') { | ||
return null; | ||
} | ||
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return ( | ||
<div className="flex flex-row"> | ||
<span className="mr-1">W:</span> | ||
<span className="ml-1 mr-2 font-light">{windowWidth.toFixed(0)}</span> | ||
<span className="mr-1">L:</span> | ||
<span className="ml-1 font-light">{windowCenter.toFixed(0)}</span> | ||
</div> | ||
); | ||
} | ||
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if (activeTools.includes('Zoom')) { | ||
return ( | ||
<div className="flex flex-row"> | ||
<span className="mr-1">Zoom:</span> | ||
<span className="font-light">{scale.toFixed(2)}x</span> | ||
</div> | ||
); | ||
} | ||
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return null; | ||
}, [voi, scale, activeTools]); | ||
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const getTopRightContent = useCallback(() => { | ||
const { stack } = viewportData; | ||
const imageId = stack.imageIds[imageIndex]; | ||
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const generalImageModule = | ||
metaData.get('generalImageModule', imageId) || {}; | ||
const { instanceNumber } = generalImageModule; | ||
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const stackSize = stack.imageIds ? stack.imageIds.length : 0; | ||
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return ( | ||
<div className="flex flex-row"> | ||
<span className="mr-1">I:</span> | ||
<span className="font-light"> | ||
{instanceNumber !== undefined | ||
? `${instanceNumber} (${imageIndex}/${stackSize})` | ||
: `${imageIndex}/${stackSize}`} | ||
</span> | ||
</div> | ||
); | ||
}, [imageIndex, viewportData]); | ||
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if (!viewportData) { | ||
return null; | ||
} | ||
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// Todo: fix this for volume later | ||
const { stack } = viewportData; | ||
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if (!stack || stack.imageIds.length === 0) { | ||
throw new Error( | ||
'ViewportOverlay: only viewports with imageIds is supported at this time' | ||
); | ||
} | ||
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return ( | ||
<ViewportOverlay | ||
topLeft={getTopLeftContent()} | ||
topRight={getTopRightContent()} | ||
/> | ||
); | ||
} | ||
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CornerstoneOverlay.propTypes = { | ||
viewportData: PropTypes.object, | ||
imageIndex: PropTypes.number, | ||
viewportIndex: PropTypes.number, | ||
}; | ||
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export default CornerstoneOverlay; |
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