/*

     File: ImageView.m

 Abstract: 

    This is a content view class for managing the 'image resource' type table view cells 

  Version: 1.0

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@import MultipeerConnectivity;

#import "ImageView.h"

#import "Transcript.h"

#define IMAGE_VIEW_HEIGHT_MAX   (140.0)

#define IMAGE_PADDING_X         (15.0)

#define NAME_FONT_SIZE          (10.0)

#define BUFFER_WHITE_SPACE      (14.0)

#define DETAIL_TEXT_LABEL_WIDTH (220.0)

#define PEER_NAME_HEIGHT        (12.0)

#define NAME_OFFSET_ADJUST      (4.0)

@interface ImageView ()

// Background image

@property (nonatomic, retain) UIImageView *imageView;

// Name text (for received messages)

@property (nonatomic, retain) UILabel *nameLabel;

@end

@implementation ImageView

- (id)initWithCoder:(NSCoder *)aDecoder

{

    if (self = [super initWithCoder:aDecoder]) {

        self.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;

        // Initialization the views

        _imageView = [UIImageView new];

        _imageView.layer.cornerRadius = 5.0;

        _imageView.layer.masksToBounds = YES;

        _imageView.layer.borderColor = [UIColor lightGrayColor].CGColor;

        _imageView.layer.borderWidth = 0.5;

        _nameLabel = [UILabel new];

        _nameLabel.font = [UIFont systemFontOfSize:10.0];

        _nameLabel.textColor = [UIColor colorWithRed:34.0/255.0 green:97.0/255.0 blue:221.0/255.0 alpha:1];

        // Add to parent view

        [self addSubview:_imageView];

        [self addSubview:_nameLabel];

    }

    return self;

}

// Method for setting the transcript object which is used to build this view instance.

- (void)setTranscript:(Transcript *)transcript

{

    // Load the image the specificed resource URL points to.

    UIImage *image = [UIImage imageWithContentsOfFile:[transcript.imageUrl path]];

    _imageView.image = image;

    // Get the image size and scale based on our max height (if necessary)

    CGSize imageSize = image.size;

    CGFloat height = imageSize.height;

    CGFloat scale = 1.0;

    // Compute scale between the original image and our max row height

    scale = (IMAGE_VIEW_HEIGHT_MAX / height);

    height = IMAGE_VIEW_HEIGHT_MAX;

    // Scale the width

    CGFloat width = imageSize.width * scale;

    // Compute name size

    NSString *nameText = transcript.peerID.displayName;

    CGSize nameSize = [ImageView labelSizeForString:nameText fontSize:NAME_FONT_SIZE];

    // Comput the X,Y origin offsets

    CGFloat xOffsetBalloon;

    CGFloat yOffset;

    if (TRANSCRIPT_DIRECTION_SEND == transcript.direction) {

        // Sent images appear or right of view

        xOffsetBalloon = 320 - width - IMAGE_PADDING_X;

        yOffset = BUFFER_WHITE_SPACE / 2;

        _nameLabel.text = @"";

    }

    else {

        // Received images appear on left of view with additional display name label

        xOffsetBalloon = IMAGE_PADDING_X;

        yOffset = (BUFFER_WHITE_SPACE / 2) + nameSize.height - NAME_OFFSET_ADJUST;

        _nameLabel.text = nameText;

    }

    // Set the dynamic frames

    _nameLabel.frame = CGRectMake(xOffsetBalloon, 1, nameSize.width, nameSize.height);

    _imageView.frame = CGRectMake(xOffsetBalloon, yOffset, width, height);

}

#pragma - class methods for computing sizes based on strings

+ (CGFloat)viewHeightForTranscript:(Transcript *)transcript

{

    // Return dynamic height of the cell based on the particular transcript

    if (TRANSCRIPT_DIRECTION_RECEIVE == transcript.direction) {

        // The senders name height is included for received messages

        return (PEER_NAME_HEIGHT + IMAGE_VIEW_HEIGHT_MAX + BUFFER_WHITE_SPACE - NAME_OFFSET_ADJUST);

    }

    else {

        // Just the scaled image height and some buffer space

        return (IMAGE_VIEW_HEIGHT_MAX + BUFFER_WHITE_SPACE);

    }

}

+ (CGSize)labelSizeForString:(NSString *)string fontSize:(CGFloat)fontSize

{

    return [string boundingRectWithSize:CGSizeMake(DETAIL_TEXT_LABEL_WIDTH, 2000.0) options:NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName : [UIFont systemFontOfSize:fontSize]} context:nil].size;

}

@end