xref: /expo/packages/expo-camera/build/ExponentCamera.web.js.map (revision ef951f14)

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React, { CSSProperties } from 'react';\nimport { CapturedPicture, NativeProps, PictureOptions, MountError } from './Camera.types';\nimport CameraModule, { CameraType } from './CameraModule/CameraModule';\nimport CameraManager from './ExponentCameraManager.web';\n\nlet findNodeHandle = function(node: any): any {};\nlet flatten = data => data;\nlet View = props => <div {...props} />;\n\n// Without react-native-web\ntry {\n  const ReactNative = require('react-native');\n  findNodeHandle = ReactNative.findNodeHandle;\n  flatten = ReactNative.StyleSheet.flatten;\n  View = ReactNative.View;\n} catch (error) {}\n\nexport default class ExponentCamera extends React.Component<NativeProps> {\n  video?: number | null;\n  camera?: CameraModule;\n\n  state = { type: null };\n\n  componentWillUnmount() {\n    if (this.camera) {\n      this.camera.unmount();\n    }\n  }\n\n  componentWillReceiveProps(nextProps) {\n    this._updateCameraProps(nextProps);\n  }\n\n  _updateCameraProps = async ({\n    type,\n    zoom,\n    pictureSize,\n    flashMode,\n    autoFocus,\n    // focusDepth,\n    whiteBalance,\n  }: NativeProps) => {\n    const { camera } = this;\n    if (!camera) {\n      return;\n    }\n    await Promise.all([\n      camera.setTypeAsync(type as CameraType),\n      camera.setPictureSize(pictureSize as string),\n      camera.setZoomAsync(zoom as number),\n      camera.setAutoFocusAsync(autoFocus as string),\n      camera.setWhiteBalanceAsync(whiteBalance as string),\n      camera.setFlashModeAsync(flashMode as string),\n      camera.ensureCameraIsRunningAsync(),\n    ]);\n    const actualCameraType = camera.getActualCameraType();\n    if (actualCameraType !== this.state.type) {\n      this.setState({ type: actualCameraType });\n    }\n  };\n\n  getCamera = (): CameraModule => {\n    if (this.camera) {\n      return this.camera;\n    }\n    throw new Error('Camera is not defined yet!');\n  };\n\n  getAvailablePictureSizes = async (ratio: string): Promise<string[]> => {\n    const camera = this.getCamera();\n    return camera.getAvailablePictureSizes(ratio);\n  };\n\n  takePicture = async (options: PictureOptions): Promise<CapturedPicture> => {\n    const camera = this.getCamera();\n    return camera.takePicture({\n      ...options,\n      // This will always be defined, the option gets added to a queue in the upper-level. We should replace the original so it isn't called twice.\n      onPictureSaved: this.props.onPictureSaved,\n    });\n  };\n\n  resumePreview = async (): Promise<void> => {\n    const camera = this.getCamera();\n    await camera.resumePreview();\n  };\n\n  pausePreview = (): void => {\n    const camera = this.getCamera();\n    camera.pausePreview();\n  };\n\n  onCameraReady = () => {\n    if (this.props.onCameraReady) {\n      this.props.onCameraReady();\n    }\n  };\n\n  onMountError = ({ nativeEvent }: { nativeEvent: MountError }) => {\n    if (this.props.onMountError) {\n      this.props.onMountError({ nativeEvent });\n    }\n  };\n\n  _setRef = ref => {\n    if (!ref) {\n      this.video = null;\n      if (this.camera) {\n        this.camera.unmount();\n        this.camera = undefined;\n      }\n      return;\n    }\n    this.video = findNodeHandle(ref);\n    this.camera = new CameraModule(ref);\n    this.camera.onCameraReady = this.onCameraReady;\n    this.camera.onMountError = this.onMountError;\n    this._updateCameraProps(this.props);\n  };\n\n  render() {\n    const transform = this.state.type === CameraManager.Type.front ? 'rotateY(180deg)' : 'none';\n    const reactStyle = flatten(this.props.style);\n    const style: CSSProperties = {\n      position: 'absolute',\n      top: 0,\n      left: 0,\n      right: 0,\n      bottom: 0,\n      width: '100%',\n      height: '100%',\n      objectFit: 'cover',\n      transform,\n    };\n\n    return (\n      <View style={{ flex: 1, alignItems: 'stretch', ...reactStyle }}>\n        <video ref={this._setRef} style={style} autoPlay playsInline />\n        {this.props.children}\n      </View>\n    );\n  }\n}\n"]}