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7f92b5a96b
// FREEBIE
159 lines
4.8 KiB
Objective-C
159 lines
4.8 KiB
Objective-C
//
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// Copyright (c) 2017 Open Whisper Systems. All rights reserved.
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//
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#import "TSPhotoAdapter.h"
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#import "AttachmentUploadView.h"
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#import "JSQMediaItem+OWS.h"
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#import "TSAttachmentStream.h"
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#import <JSQMessagesViewController/JSQMessagesMediaViewBubbleImageMasker.h>
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#import <MobileCoreServices/MobileCoreServices.h>
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#import <SignalServiceKit/MimeTypeUtil.h>
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NS_ASSUME_NONNULL_BEGIN
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@interface TSPhotoAdapter ()
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@property (nonatomic, nullable) UIImageView *cachedImageView;
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@property (nonatomic, nullable) AttachmentUploadView *attachmentUploadView;
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@property (nonatomic) BOOL incoming;
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// See comments on OWSMessageMediaAdapter.
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@property (nonatomic, nullable, weak) id lastPresentingCell;
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@end
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#pragma mark -
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@implementation TSPhotoAdapter
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- (instancetype)initWithAttachment:(TSAttachmentStream *)attachment incoming:(BOOL)incoming
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{
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self = [super initWithImage:attachment.image];
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if (!self) {
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return self;
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}
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_cachedImageView = nil;
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_attachment = attachment;
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_attachmentId = attachment.uniqueId;
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_incoming = incoming;
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return self;
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}
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- (void)clearAllViews
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{
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[_cachedImageView removeFromSuperview];
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_cachedImageView = nil;
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_attachmentUploadView = nil;
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}
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- (void)clearCachedMediaViews
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{
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[super clearCachedMediaViews];
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[self clearAllViews];
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}
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- (void)setAppliesMediaViewMaskAsOutgoing:(BOOL)appliesMediaViewMaskAsOutgoing {
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[super setAppliesMediaViewMaskAsOutgoing:appliesMediaViewMaskAsOutgoing];
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[self clearAllViews];
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}
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#pragma mark - JSQMessageMediaData protocol
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- (UIView *)mediaView {
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if (self.image == nil) {
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return nil;
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}
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if (self.cachedImageView == nil) {
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CGSize size = [self mediaViewDisplaySize];
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UIImageView *imageView = [[UIImageView alloc] initWithImage:self.image];
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imageView.contentMode = UIViewContentModeScaleAspectFill;
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imageView.frame = CGRectMake(0.0f, 0.0f, size.width, size.height);
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imageView.clipsToBounds = YES;
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// Use trilinear filters for better scaling quality at
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// some performance cost.
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imageView.layer.minificationFilter = kCAFilterTrilinear;
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imageView.layer.magnificationFilter = kCAFilterTrilinear;
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[JSQMessagesMediaViewBubbleImageMasker applyBubbleImageMaskToMediaView:imageView
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isOutgoing:self.appliesMediaViewMaskAsOutgoing];
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self.cachedImageView = imageView;
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if (!self.incoming) {
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self.attachmentUploadView = [[AttachmentUploadView alloc] initWithAttachment:self.attachment
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superview:imageView
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attachmentStateCallback:nil];
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}
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}
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return self.cachedImageView;
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}
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- (CGSize)mediaViewDisplaySize {
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return [self ows_adjustBubbleSize:[super mediaViewDisplaySize] forImage:self.image];
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}
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#pragma mark - OWSMessageEditing Protocol
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- (BOOL)canPerformEditingAction:(SEL)action
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{
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return (action == @selector(copy:) || action == NSSelectorFromString(@"save:"));
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}
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- (void)performEditingAction:(SEL)action
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{
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NSString *actionString = NSStringFromSelector(action);
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if (!self.image) {
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OWSAssert(NO);
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DDLogWarn(@"Refusing to perform '%@' action with nil image for %@: attachmentId=%@. (corrupted attachment?)",
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actionString,
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self.class,
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self.attachmentId);
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return;
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}
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if (action == @selector(copy:)) {
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// We should always copy to the pasteboard as data, not an UIImage.
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// The pasteboard should have as specific as UTI type as possible and
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// data support should be far more general than UIImage support.
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NSString *utiType = [MIMETypeUtil utiTypeForMIMEType:self.attachment.contentType];
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if (!utiType) {
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OWSAssert(0);
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utiType = (NSString *)kUTTypeImage;
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}
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NSData *data = [NSData dataWithContentsOfURL:self.attachment.mediaURL];
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[UIPasteboard.generalPasteboard setData:data forPasteboardType:utiType];
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return;
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} else if (action == NSSelectorFromString(@"save:")) {
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UIImageWriteToSavedPhotosAlbum(self.image, nil, nil, nil);
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return;
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}
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// Shouldn't get here, as only supported actions should be exposed via canPerformEditingAction
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DDLogError(@"'%@' action unsupported for %@: attachmentId=%@", actionString, self.class, self.attachmentId);
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OWSAssert(NO);
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}
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#pragma mark - OWSMessageMediaAdapter
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- (void)setCellVisible:(BOOL)isVisible
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{
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// Ignore.
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}
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- (void)clearCachedMediaViewsIfLastPresentingCell:(id)cell
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{
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OWSAssert(cell);
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if (cell == self.lastPresentingCell) {
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[self clearCachedMediaViews];
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}
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}
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@end
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NS_ASSUME_NONNULL_END
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