106 строки
4.1 KiB
Objective-C
106 строки
4.1 KiB
Objective-C
//
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// Licensed under the MIT License.
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//
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#import "DMDynamicImage.h"
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#import "DMTraitCollection.h"
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@import ObjectiveC;
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@interface DMDynamicImageProxy ()
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@property (nonatomic, strong) UIImage *lightImage;
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@property (nonatomic, strong) UIImage *darkImage;
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@end
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@implementation DMDynamicImageProxy
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- (instancetype)initWithLightImage:(UIImage *)lightImage darkImage:(UIImage *)darkImage {
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self.lightImage = lightImage;
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self.darkImage = darkImage;
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// For now, we don't support `nil` images as it will cause bad result
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// when using in swift:
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// `someOptionalDynamicImage as? UIImage` will return `true`
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// even when the internal `lightImage` or `darkImage` is nil
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NSAssert(self.darkImage != nil, @"Nil image is not supported yet");
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if (self.lightImage == nil) {
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NSAssert(NO, @"Nil light image is not supported yet");
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self.lightImage = [UIImage new];
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}
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if (self.darkImage == nil) {
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NSAssert(NO, @"Nil dark image is not supported yet");
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self.darkImage = [UIImage new];
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}
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return self;
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}
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- (UIImage *)resolvedImage {
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if (DMTraitCollection.overrideTraitCollection.userInterfaceStyle == DMUserInterfaceStyleDark) {
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return self.darkImage;
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}
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return self.lightImage;
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}
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- (NSMethodSignature *)methodSignatureForSelector:(SEL)sel {
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return [self.resolvedImage methodSignatureForSelector:sel];
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}
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- (void)forwardInvocation:(NSInvocation *)invocation {
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[invocation invokeWithTarget:self.resolvedImage];
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}
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#pragma mark - Public Methods
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/// Passing these public methods to both light and dark images
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/// instead of only to the `resolvedImage`
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- (UIImage *)resizableImageWithCapInsets:(UIEdgeInsets)capInsets {
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return (UIImage *)[[DMDynamicImageProxy alloc] initWithLightImage:[self.lightImage resizableImageWithCapInsets:capInsets]
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darkImage:[self.darkImage resizableImageWithCapInsets:capInsets]];
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}
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- (UIImage *)resizableImageWithCapInsets:(UIEdgeInsets)capInsets resizingMode:(UIImageResizingMode)resizingMode {
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UIImage *lightImage = [self.lightImage resizableImageWithCapInsets:capInsets resizingMode:resizingMode];
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UIImage *darkImage = [self.darkImage resizableImageWithCapInsets:capInsets resizingMode:resizingMode];
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return (UIImage *)[[DMDynamicImageProxy alloc] initWithLightImage:lightImage darkImage:darkImage];
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}
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- (UIImage *)imageWithAlignmentRectInsets:(UIEdgeInsets)alignmentInsets {
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return (UIImage *)[[DMDynamicImageProxy alloc] initWithLightImage:[self.lightImage imageWithAlignmentRectInsets:alignmentInsets]
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darkImage:[self.darkImage imageWithAlignmentRectInsets:alignmentInsets]];
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}
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- (UIImage *)imageWithRenderingMode:(UIImageRenderingMode)renderingMode {
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return (UIImage *)[[DMDynamicImageProxy alloc] initWithLightImage:[self.lightImage imageWithRenderingMode:renderingMode]
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darkImage:[self.darkImage imageWithRenderingMode:renderingMode]];
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}
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- (UIImage *)imageFlippedForRightToLeftLayoutDirection {
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return (UIImage *)[[DMDynamicImageProxy alloc] initWithLightImage:[self.lightImage imageFlippedForRightToLeftLayoutDirection]
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darkImage:[self.darkImage imageFlippedForRightToLeftLayoutDirection]];
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}
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- (UIImage *)imageWithHorizontallyFlippedOrientation {
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return (UIImage *)[[DMDynamicImageProxy alloc] initWithLightImage:[self.lightImage imageWithHorizontallyFlippedOrientation]
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darkImage:[self.darkImage imageWithHorizontallyFlippedOrientation]];
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}
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- (UIImage *)imageWithConfiguration:(UIImageConfiguration *)configuration API_AVAILABLE(ios(13.0)) {
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if (configuration.traitCollection.userInterfaceStyle == UIUserInterfaceStyleDark) {
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return [_darkImage imageWithConfiguration:configuration];
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}
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return [_lightImage imageWithConfiguration:configuration];
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}
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- (id)copy {
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return [self copyWithZone:nil];
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}
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- (id)copyWithZone:(NSZone *)zone {
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return [[DMDynamicImageProxy alloc] initWithLightImage:self.lightImage darkImage:self.darkImage];
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}
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@end
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