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96 lines
2.8 KiB
Objective-C
96 lines
2.8 KiB
Objective-C
//
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// Copyright (c) 2018 Open Whisper Systems. All rights reserved.
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//
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#import "OWSGroupAvatarBuilder.h"
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#import "OWSContactsManager.h"
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#import "TSGroupThread.h"
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#import "UIColor+OWS.h"
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#import <SignalMessaging/SignalMessaging-Swift.h>
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#import <SignalServiceKit/SSKEnvironment.h>
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NS_ASSUME_NONNULL_BEGIN
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@interface OWSGroupAvatarBuilder ()
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@property (nonatomic, readonly) TSGroupThread *thread;
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@property (nonatomic, readonly) NSUInteger diameter;
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@end
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@implementation OWSGroupAvatarBuilder
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- (instancetype)initWithThread:(TSGroupThread *)thread diameter:(NSUInteger)diameter
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{
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self = [super init];
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if (!self) {
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return self;
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}
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_thread = thread;
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_diameter = diameter;
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return self;
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}
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#pragma mark - Dependencies
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+ (OWSContactsManager *)contactsManager
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{
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return (OWSContactsManager *)SSKEnvironment.shared.contactsManager;
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}
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#pragma mark -
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- (nullable UIImage *)buildSavedImage
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{
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return self.thread.groupModel.groupImage;
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}
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- (nullable UIImage *)buildDefaultImage
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{
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return [self.class defaultAvatarForGroupId:self.thread.groupModel.groupId
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conversationColorName:self.thread.conversationColorName
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diameter:self.diameter];
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}
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+ (nullable UIImage *)defaultAvatarForGroupId:(NSData *)groupId
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conversationColorName:(NSString *)conversationColorName
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diameter:(NSUInteger)diameter
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{
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NSString *cacheKey = [NSString stringWithFormat:@"%@-%d", groupId.hexadecimalString, Theme.isDarkThemeEnabled];
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UIImage *_Nullable cachedAvatar =
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[OWSGroupAvatarBuilder.contactsManager.avatarCache imageForKey:cacheKey diameter:(CGFloat)diameter];
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if (cachedAvatar) {
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return cachedAvatar;
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}
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UIColor *backgroundColor =
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[OWSConversationColor conversationColorOrDefaultForColorName:conversationColorName].themeColor;
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UIImage *_Nullable image =
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[OWSGroupAvatarBuilder groupAvatarImageWithBackgroundColor:backgroundColor diameter:diameter];
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if (!image) {
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OWSFailDebug(@"Could not create group avatar.");
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return nil;
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}
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[OWSGroupAvatarBuilder.contactsManager.avatarCache setImage:image forKey:cacheKey diameter:diameter];
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return image;
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}
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+ (nullable UIImage *)groupAvatarImageWithBackgroundColor:(UIColor *)backgroundColor diameter:(NSUInteger)diameter
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{
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UIImage *icon = [UIImage imageNamed:@"group-avatar"];
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// The group-avatar asset is designed for the kStandardAvatarSize.
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// Adjust its size to reflect the actual output diameter.
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CGFloat scaling = diameter / (CGFloat)kStandardAvatarSize;
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CGSize iconSize = CGSizeScale(icon.size, scaling);
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return
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[OWSAvatarBuilder avatarImageWithIcon:icon iconSize:iconSize backgroundColor:backgroundColor diameter:diameter];
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}
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@end
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NS_ASSUME_NONNULL_END
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