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Merge pull request #379 from floryst/refactor-widgets
Refactor widgets
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,185 +1,8 @@ | ||
| import macro from 'vtk.js/Sources/macro'; | ||
| import superWidgetBehavior from 'vtk.js/Sources/Widgets/Widgets3D/AngleWidget/behavior'; | ||
|
|
||
| const MAX_POINTS = 3; | ||
| import widgetManipulatorWatcher from 'paraview-glance/src/vtk/widgetManipulatorWatcher'; | ||
|
|
||
| export default function widgetBehavior(publicAPI, model) { | ||
| model.classHierarchy.push('vtkAngleWidgetProp'); | ||
| let isDragging = null; | ||
| let cameraSub = null; | ||
|
|
||
| // -------------------------------------------------------------------------- | ||
| // Display 2D | ||
| // -------------------------------------------------------------------------- | ||
|
|
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| publicAPI.setDisplayCallback = (callback) => | ||
| model.representations[0].setDisplayCallback(callback); | ||
|
|
||
| // -------------------------------------------------------------------------- | ||
| // Interactor events | ||
| // -------------------------------------------------------------------------- | ||
|
|
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| function ignoreKey(e) { | ||
| return e.altKey || e.controlKey || e.shiftKey; | ||
| } | ||
|
|
||
| // -------------------------------------------------------------------------- | ||
| // Left press: Select handle to drag | ||
| // -------------------------------------------------------------------------- | ||
|
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||
| publicAPI.handleLeftButtonPress = (e) => { | ||
| if ( | ||
| !model.activeState || | ||
| !model.activeState.getActive() || | ||
| !model.pickable || | ||
| ignoreKey(e) | ||
| ) { | ||
| return macro.VOID; | ||
| } | ||
|
|
||
| if ( | ||
| model.activeState === model.widgetState.getMoveHandle() && | ||
| model.widgetState.getHandleList().length < MAX_POINTS | ||
| ) { | ||
| // Commit handle to location | ||
| const moveHandle = model.widgetState.getMoveHandle(); | ||
| const newHandle = model.widgetState.addHandle(); | ||
| newHandle.setOrigin(...moveHandle.getOrigin()); | ||
| newHandle.setColor(moveHandle.getColor()); | ||
| newHandle.setScale1(moveHandle.getScale1()); | ||
| } else { | ||
| isDragging = true; | ||
| model.openGLRenderWindow.setCursor('grabbing'); | ||
| model.interactor.requestAnimation(publicAPI); | ||
| } | ||
|
|
||
| publicAPI.invokeStartInteractionEvent(); | ||
| return macro.EVENT_ABORT; | ||
| }; | ||
|
|
||
| // -------------------------------------------------------------------------- | ||
| // Mouse move: Drag selected handle / Handle follow the mouse | ||
| // -------------------------------------------------------------------------- | ||
|
|
||
| publicAPI.handleMouseMove = (callData) => { | ||
| if ( | ||
| model.hasFocus && | ||
| model.widgetState.getHandleList().length === MAX_POINTS | ||
| ) { | ||
| model.widgetManager.releaseFocus(); | ||
| return macro.VOID; | ||
| } | ||
|
|
||
| if ( | ||
| model.pickable && | ||
| model.manipulator && | ||
| model.activeState && | ||
| model.activeState.getActive() && | ||
| !ignoreKey(callData) | ||
| ) { | ||
| const worldCoords = model.manipulator.handleEvent( | ||
| callData, | ||
| model.openGLRenderWindow | ||
| ); | ||
| if ( | ||
| worldCoords.length && | ||
| (model.activeState === model.widgetState.getMoveHandle() || isDragging) | ||
| ) { | ||
| model.activeState.setOrigin(worldCoords); | ||
| publicAPI.invokeInteractionEvent(); | ||
| return macro.EVENT_ABORT; | ||
| } | ||
| } | ||
|
|
||
| return macro.VOID; | ||
| }; | ||
|
|
||
| // -------------------------------------------------------------------------- | ||
| // Left release: Finish drag / Create new handle | ||
| // -------------------------------------------------------------------------- | ||
|
|
||
| publicAPI.handleLeftButtonRelease = () => { | ||
| if (isDragging && model.pickable) { | ||
| model.openGLRenderWindow.setCursor('pointer'); | ||
| model.widgetState.deactivate(); | ||
| model.interactor.cancelAnimation(publicAPI); | ||
| publicAPI.invokeEndInteractionEvent(); | ||
| } else if (model.activeState !== model.widgetState.getMoveHandle()) { | ||
| model.widgetState.deactivate(); | ||
| } | ||
|
|
||
| if ( | ||
| (model.hasFocus && !model.activeState) || | ||
| (model.activeState && !model.activeState.getActive()) | ||
| ) { | ||
| publicAPI.invokeEndInteractionEvent(); | ||
| } | ||
|
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||
| isDragging = false; | ||
| }; | ||
|
|
||
| // -------------------------------------------------------------------------- | ||
| // Focus API - modeHandle follow mouse when widget has focus | ||
| // -------------------------------------------------------------------------- | ||
|
|
||
| publicAPI.grabFocus = () => { | ||
| if ( | ||
| !model.hasFocus && | ||
| model.widgetState.getHandleList().length < MAX_POINTS | ||
| ) { | ||
| model.activeState = model.widgetState.getMoveHandle(); | ||
| model.activeState.activate(); | ||
| model.activeState.setVisible(true); | ||
| model.interactor.requestAnimation(publicAPI); | ||
| publicAPI.invokeStartInteractionEvent(); | ||
| } | ||
| model.hasFocus = true; | ||
| }; | ||
|
|
||
| // -------------------------------------------------------------------------- | ||
|
|
||
| publicAPI.loseFocus = () => { | ||
| if (model.hasFocus) { | ||
| model.interactor.cancelAnimation(publicAPI); | ||
| publicAPI.invokeEndInteractionEvent(); | ||
| } | ||
| model.widgetState.deactivate(); | ||
| model.widgetState.getMoveHandle().deactivate(); | ||
| model.widgetState.getMoveHandle().setVisible(false); | ||
| model.activeState = null; | ||
| model.hasFocus = false; | ||
| model.widgetManager.enablePicking(); | ||
| model.interactor.render(); | ||
| }; | ||
|
|
||
| // -------------------------------------------------------------------------- | ||
|
|
||
| publicAPI.delete = macro.chain(publicAPI.delete, () => { | ||
| if (cameraSub) { | ||
| cameraSub.unsubscribe(); | ||
| } | ||
| }); | ||
|
|
||
| // -------------------------------------------------------------------------- | ||
| // init | ||
| // -------------------------------------------------------------------------- | ||
|
|
||
| const setHandleScaleFromCamera = () => { | ||
| if (model.camera) { | ||
| let scale; | ||
| if (model.camera.getParallelProjection()) { | ||
| scale = model.camera.getParallelScale() / 1.25; | ||
| } else { | ||
| scale = model.camera.getDistance() / 6; | ||
| } | ||
|
|
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| publicAPI.setHandleScale(scale); | ||
| } | ||
| }; | ||
|
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||
| // listen to camera so we can scale the handles to the screen | ||
| cameraSub = model.camera.onModified(setHandleScaleFromCamera); | ||
| // since forwarded/linked set/get methods aren't created until | ||
| // after this behavior function finishes, this is a hack to invoke | ||
| // initial handle scale. | ||
| setTimeout(setHandleScaleFromCamera, 0); | ||
| superWidgetBehavior(publicAPI, model); | ||
| widgetManipulatorWatcher(publicAPI, model); | ||
| } |
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