react-floorplanner/src/reducers/viewer2d-reducer.js

react-floorplanner is a React Component for plans design. Draw a 2D floorplan and navigate it in 3D mode.

import {
  UPDATE_2D_CAMERA,
  SELECT_TOOL_PAN,
  SELECT_TOOL_ZOOM_IN,
  SELECT_TOOL_ZOOM_OUT,
  MODE_IDLE,
  MODE_2D_PAN,
  MODE_2D_ZOOM_IN,
  MODE_2D_ZOOM_OUT
} from '../constants';
import {fromJS} from 'immutable';
import {TOOL_NONE, TOOL_ZOOM_OUT, TOOL_ZOOM_IN, TOOL_PAN} from 'react-svg-pan-zoom';

const TOOL2MODE = {
  [TOOL_NONE]: MODE_IDLE,
  [TOOL_ZOOM_IN]: MODE_2D_ZOOM_IN,
  [TOOL_ZOOM_OUT]: MODE_2D_ZOOM_OUT,
  [TOOL_PAN]: MODE_2D_PAN
};

export default function (state, action) {
  switch (action.type) {
    case UPDATE_2D_CAMERA:
      return state.merge({
        // mode: TOOL2MODE[action.value.tool],
        viewer2D: fromJS(action.value)
      });

    case SELECT_TOOL_PAN:
      return state.set('mode', MODE_2D_PAN);

    case SELECT_TOOL_ZOOM_IN:
      return state.set('mode', MODE_2D_ZOOM_IN);

    case SELECT_TOOL_ZOOM_OUT:
      return state.set('mode', MODE_2D_ZOOM_OUT);
  }
}