| // Copyright 2019-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 <CoreGraphics/CoreGraphics.h> |
| #import <Foundation/Foundation.h> |
| |
| /** |
| Provides APIs for @c UIViews to communicate their elevation throughout the view hierarchy. |
| */ |
| @protocol MDCElevationOverriding |
| |
| /** |
| Used by @c MaterialElevationResponding instead of @c mdc_baseElevation. |
| |
| This can be used in cases where there is elevation behind an object that is not part of the |
| view hierarchy, like a @c UIPresentationController. |
| |
| Note: If set to a negative value, this property is ignored as part of the @c mdc_baseElevation |
| calculation. |
| */ |
| @property(nonatomic, assign, readwrite) CGFloat mdc_overrideBaseElevation; |
| |
| @end |
