TIMSDK/iOS/TUIKit/TUIChat/UI/Base/Camera/TUICaptureImagePreviewController.m

#import "TUICaptureImagePreviewController.h"
#import "TUICommonModel.h"
#import "TUIDefine.h"

@interface TUICaptureImagePreviewController ()
{
    UIImage *_image;
}

@property (nonatomic) UIImageView *imageView;
@property (nonatomic) UIButton *commitButton;
@property (nonatomic) UIButton *cancelButton;
@property (nonatomic) CGRect lastRect;

@end

@implementation TUICaptureImagePreviewController

- (instancetype)initWithImage:(UIImage *)image {
    if (self = [super initWithNibName:nil bundle:nil]) {
        _image = image;
    }
    return self;
}

- (void)viewDidLoad {
    [super viewDidLoad];
    self.view.backgroundColor = [UIColor blackColor];
    
    UIImageView *imageView = [[UIImageView alloc] initWithImage:_image];
    imageView.layer.masksToBounds = YES;
    imageView.contentMode = UIViewContentModeScaleAspectFit;
    [self.view addSubview:imageView];
    self.imageView = imageView;
    NSLog(@"%ld--%ld", (long)_image.imageOrientation, UIImageOrientationUp);
    
    self.commitButton = [UIButton buttonWithType:UIButtonTypeCustom];
    UIImage *commitImage = [[TUIImageCache sharedInstance] getResourceFromCache:TUIChatImagePath(@"camer_commit")];
    [self.commitButton setImage:commitImage forState:UIControlStateNormal];
    UIImage *commitBGImage = [[TUIImageCache sharedInstance] getResourceFromCache:TUIChatImagePath(@"camer_commitBg")];
    [self.commitButton setBackgroundImage:commitBGImage forState:UIControlStateNormal];
    [self.commitButton addTarget:self action:@selector(commitButtonClick:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:self.commitButton];
    
    self.cancelButton = [UIButton buttonWithType:UIButtonTypeCustom];
    UIImage *cancelButtonBGImage = [[TUIImageCache sharedInstance] getResourceFromCache:TUIChatImagePath(@"camera_cancel")];
    [self.cancelButton setBackgroundImage:cancelButtonBGImage forState:UIControlStateNormal];
    [self.cancelButton addTarget:self action:@selector(cancelButtonClick:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:self.cancelButton];
}

- (void)viewWillLayoutSubviews {
    [super viewWillLayoutSubviews];
    
    if (!CGRectEqualToRect(self.lastRect, self.view.bounds)) {
        self.lastRect = self.view.bounds;
        
        self.imageView.frame = self.view.bounds;
                
        CGFloat commitButtonWidth = 80.0;
        CGFloat buttonDistance = (self.view.bounds.size.width - 2 * commitButtonWidth) / 3.0;
        CGFloat commitButtonY = self.view.bounds.size.height - commitButtonWidth - 50.0;
        CGFloat commitButtonX = 2 * buttonDistance + commitButtonWidth;
        self.commitButton.frame = CGRectMake(commitButtonX, commitButtonY, commitButtonWidth, commitButtonWidth);
        
        CGFloat cancelButtonX = commitButtonWidth;
        self.cancelButton.frame = CGRectMake(cancelButtonX, commitButtonY, commitButtonWidth, commitButtonWidth);
    }
}

- (void)commitButtonClick:(UIButton *)btn {
    if (self.commitBlock) {
        self.commitBlock();
    }
}

- (void)cancelButtonClick:(UIButton *)btn {
    if (self.cancelBlock) {
        self.cancelBlock();
    }
}

@end