| /* |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| |
| var screenOrientation = {}, |
| Orientations = [ |
| 'portrait-primary', |
| // The orientation is in the primary portrait mode. |
| 'portrait-secondary', |
| // The orientation is in the secondary portrait mode. |
| 'landscape-primary', |
| // The orientation is in the primary landscape mode. |
| 'landscape-secondary', |
| // The orientation is in the secondary landscape mode. |
| 'portrait', |
| // The orientation is either portrait-primary or portrait-secondary. |
| 'landscape' |
| // The orientation is either landscape-primary or landscape-secondary. |
| ]; |
| |
| screenOrientation.Orientations = Orientations; |
| screenOrientation.currOrientation = 'unlocked'; |
| |
| screenOrientation.setOrientation = function(orientation) { |
| //platform specific files override this function |
| console.log('setOrientation not supported on device'); |
| }; |
| |
| function addScreenOrientationApi(screenObject) { |
| if (screenObject.unlockOrientation || screenObject.lockOrientation) { |
| return; |
| } |
| |
| screenObject.lockOrientation = function(orientation) { |
| if (Orientations.indexOf(orientation) == -1) { |
| console.log('INVALID ORIENTATION', orientation); |
| return; |
| } |
| screenOrientation.currOrientation = screenObject.orientation = orientation; |
| screenOrientation.setOrientation(orientation); |
| }; |
| |
| screenObject.unlockOrientation = function() { |
| screenOrientation.currOrientation = screenObject.orientation = 'unlocked'; |
| screenOrientation.setOrientation('unlocked'); |
| }; |
| } |
| |
| addScreenOrientationApi(screen); |
| orientationChange(); |
| |
| function orientationChange() { |
| var orientation; |
| |
| switch (window.orientation) { |
| case 0: |
| orientation = 'portrait-primary'; |
| break; |
| case 90: |
| orientation = 'landscape-primary'; |
| break; |
| case 180: |
| orientation = 'portrait-secondary'; |
| break; |
| case -90: |
| orientation = 'landscape-secondary'; |
| break; |
| default: |
| orientation = 'unknown'; |
| } |
| |
| screen.orientation = orientation; |
| } |
| |
| window.addEventListener("orientationchange", orientationChange, true); |
| |
| module.exports = screenOrientation; |