| // Copyright 2017-present the Material Components for iOS authors. All Rights Reserved. |
| // |
| // Licensed 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. |
| |
| #import <Foundation/Foundation.h> |
| #import <UIKit/UIKit.h> |
| |
| /** |
| This const returns the status bar height for pre iPhone X devices. |
| |
| Note: For iOS 11+ devices this value should be fetched from the views safeAreaInsets API. |
| */ |
| extern const CGFloat MDCFixedStatusBarHeightOnPreiPhoneXDevices; |
| |
| /** |
| On devices with hardware safe areas, returns the top safe area for the key window. On all other |
| devices, returns the fixed status bar height regardless of status bar visibility. |
| |
| This method is only meant for use with views that are placed behind the top safe area of a device |
| and that can be shifted off-screen along with the status bar. These kinds of views must not change |
| their top margin when shifting off-screen because it would cause a visible jump in layout. iOS |
| does not have an API for fetching the status bar's dimensions if it is hidden, so this method |
| ensures that we can always retrieve a non-zero value for our top safe area inset on devices without |
| hardware safe areas, while also ensuring that we receive the proper top safe area inset on devices |
| with hardware safe areas (iPhone X). |
| */ |
| FOUNDATION_EXPORT CGFloat MDCDeviceTopSafeAreaInset(void); |
