50 строки
1.0 KiB
Objective-C
50 строки
1.0 KiB
Objective-C
/**
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#import "ARTPattern.h"
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#import <React/RCTLog.h>
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#import "RCTConvert+ART.h"
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@implementation ARTPattern
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{
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CGImageRef _image;
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CGRect _rect;
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}
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- (instancetype)initWithArray:(NSArray<id /* imagesource + numbers */> *)array
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{
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if ((self = [super initWithArray:array])) {
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if (array.count < 6) {
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RCTLogError(@"-[%@ %@] expects 6 elements, received %@",
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self.class, NSStringFromSelector(_cmd), array);
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return nil;
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}
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_image = CGImageRetain([RCTConvert CGImage:array[1]]);
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_rect = [RCTConvert CGRect:array offset:2];
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}
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return self;
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}
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- (void)dealloc
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{
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CGImageRelease(_image);
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}
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// Note: This could use applyFillColor with a pattern. This could be more efficient but
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// to do that, we need to calculate our own user space CTM.
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- (void)paint:(CGContextRef)context
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{
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CGContextDrawTiledImage(context, _rect, _image);
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}
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@end
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