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[ProgressView] Add support for gradient progress bar.
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29 changes: 29 additions & 0 deletions
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components/ProgressView/src/private/MDCProgressGradientView.h
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,29 @@ | ||
| // Copyright 2020-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. | ||
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| #import <UIKit/UIKit.h> | ||
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| /** | ||
| A gradient view used for an MDCProgressView's progress bar. | ||
| */ | ||
| __attribute__((objc_subclassing_restricted)) @interface MDCProgressGradientView : UIView | ||
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| /** | ||
| An array of CGColorRef objects defining the color of each gradient stop | ||
| Defaults to nil. | ||
| */ | ||
| @property(nonatomic, nullable, copy) NSArray *colors; | ||
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| @end |
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components/ProgressView/src/private/MDCProgressGradientView.m
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| // Copyright 2016-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. | ||
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| #import "MDCProgressGradientView.h" | ||
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| @interface MDCProgressGradientView () | ||
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| @property(nonatomic, readonly) CAGradientLayer *gradientLayer; | ||
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| @end | ||
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| @implementation MDCProgressGradientView | ||
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| - (instancetype)initWithFrame:(CGRect)frame { | ||
| self = [super initWithFrame:frame]; | ||
| if (self) { | ||
| [self commonMDCProgressGradientViewInit]; | ||
| } | ||
| return self; | ||
| } | ||
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| - (instancetype)initWithCoder:(NSCoder *)coder { | ||
| self = [super initWithCoder:coder]; | ||
| if (self) { | ||
| [self commonMDCProgressGradientViewInit]; | ||
| } | ||
| return self; | ||
| } | ||
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| - (void)commonMDCProgressGradientViewInit { | ||
| self.gradientLayer.startPoint = CGPointMake(0.0f, 0.5f); | ||
| self.gradientLayer.endPoint = CGPointMake(1.0f, 0.5f); | ||
| } | ||
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| - (void)setColors:(NSArray *)colors { | ||
| self.gradientLayer.colors = colors; | ||
| } | ||
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| - (NSArray *)colors { | ||
| return self.gradientLayer.colors; | ||
| } | ||
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| + (Class)layerClass { | ||
| return [CAGradientLayer class]; | ||
| } | ||
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| #pragma mark - Private Helpers | ||
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| - (CAGradientLayer *)gradientLayer { | ||
| return (CAGradientLayer *)self.layer; | ||
| } | ||
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| @end |
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