session-ios/Signal/src/Models/TSMessageAdapaters/TSPhotoAdapter.m

127 lines
3.6 KiB
Objective-C

//
// Copyright (c) 2017 Open Whisper Systems. All rights reserved.
//
#import "TSPhotoAdapter.h"
#import "AttachmentUploadView.h"
#import "JSQMediaItem+OWS.h"
#import "TSAttachmentStream.h"
#import <JSQMessagesViewController/JSQMessagesMediaViewBubbleImageMasker.h>
@interface TSPhotoAdapter ()
@property (nonatomic) UIImageView *cachedImageView;
@property (nonatomic) AttachmentUploadView *attachmentUploadView;
@property (nonatomic) BOOL incoming;
@end
@implementation TSPhotoAdapter
- (instancetype)initWithAttachment:(TSAttachmentStream *)attachment incoming:(BOOL)incoming
{
self = [super initWithImage:attachment.image];
if (!self) {
return self;
}
_cachedImageView = nil;
_attachment = attachment;
_attachmentId = attachment.uniqueId;
_incoming = incoming;
return self;
}
- (void)dealloc {
self.image = nil;
_cachedImageView = nil;
}
- (void)setAppliesMediaViewMaskAsOutgoing:(BOOL)appliesMediaViewMaskAsOutgoing {
[super setAppliesMediaViewMaskAsOutgoing:appliesMediaViewMaskAsOutgoing];
_cachedImageView = nil;
}
#pragma mark - JSQMessageMediaData protocol
- (UIView *)mediaView {
if (self.image == nil) {
return nil;
}
if (self.cachedImageView == nil) {
CGSize size = [self mediaViewDisplaySize];
UIImageView *imageView = [[UIImageView alloc] initWithImage:self.image];
imageView.frame = CGRectMake(0.0f, 0.0f, size.width, size.height);
imageView.contentMode = UIViewContentModeScaleAspectFill;
imageView.clipsToBounds = YES;
// Use trilinear filters for better scaling quality at
// some performance cost.
imageView.layer.minificationFilter = kCAFilterTrilinear;
imageView.layer.magnificationFilter = kCAFilterTrilinear;
[JSQMessagesMediaViewBubbleImageMasker applyBubbleImageMaskToMediaView:imageView
isOutgoing:self.appliesMediaViewMaskAsOutgoing];
self.cachedImageView = imageView;
if (!self.incoming) {
self.attachmentUploadView = [[AttachmentUploadView alloc] initWithAttachment:self.attachment
superview:imageView
attachmentStateCallback:nil];
}
}
return self.cachedImageView;
}
- (CGSize)mediaViewDisplaySize {
return [self ows_adjustBubbleSize:[super mediaViewDisplaySize] forImage:self.image];
}
- (BOOL)isImage {
return YES;
}
- (BOOL)isAudio {
return NO;
}
- (BOOL)isVideo {
return NO;
}
#pragma mark - OWSMessageEditing Protocol
- (BOOL)canPerformEditingAction:(SEL)action
{
return (action == @selector(copy:) || action == NSSelectorFromString(@"save:"));
}
- (void)performEditingAction:(SEL)action
{
NSString *actionString = NSStringFromSelector(action);
if (!self.image) {
DDLogWarn(@"Refusing to perform '%@' action with nil image for %@: attachmentId=%@. (corrupted attachment?)",
actionString,
self.class,
self.attachmentId);
return;
}
if (action == @selector(copy:)) {
UIPasteboard.generalPasteboard.image = self.image;
return;
} else if (action == NSSelectorFromString(@"save:")) {
UIImageWriteToSavedPhotosAlbum(self.image, nil, nil, nil);
return;
}
// Shouldn't get here, as only supported actions should be exposed via canPerformEditingAction
DDLogError(@"'%@' action unsupported for %@: attachmentId=%@", actionString, self.class, self.attachmentId);
}
@end