Dwayne Harris
6 years ago
5 changed files with 420 additions and 376 deletions
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4elpha-ios.xcodeproj/project.pbxproj
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357elpha-ios/AttachmentManager.swift
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334elpha-ios/AttachmentsView.swift
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3elpha-ios/Base.lproj/Main.storyboard
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98elpha-ios/TimelineTableViewController.swift
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// |
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// AttachmentManager.swift |
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// elpha-ios |
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// |
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// Created by Dwayne Harris on 10/6/18. |
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// Copyright © 2018 Elpha. All rights reserved. |
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// |
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|
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import AlamofireImage |
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import UIKit |
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|
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class AttachmentManager { |
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static func setupAttachmentsView(_ view: AttachmentsView, withAttachments attachments: NSOrderedSet?) { |
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guard let attachments = attachments, attachments.count > 0 else { |
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return |
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} |
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|
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let placeholderImage = UIImage(named: "Help") |
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|
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switch attachments.count { |
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case 0: |
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return |
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case 1: |
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let filter = AspectScaledToFillSizeFilter(size: CGSize(width: view.frame.width, height: view.frame.width)) |
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|
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let attachment = attachments.firstObject as! AttachmentMO |
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let imageView = UIImageView() |
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|
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imageView.contentMode = UIImageView.ContentMode.scaleAspectFill |
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imageView.af_setImage( |
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withURL: attachment.url!, |
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placeholderImage: placeholderImage, |
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filter: filter |
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) |
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|
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view.addSubview(imageView) |
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|
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imageView.translatesAutoresizingMaskIntoConstraints = false |
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|
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view.addConstraint(getLeadingConstraint(from: imageView, to: view)) |
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view.addConstraint(getTrailingConstraint(from: imageView, to: view)) |
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view.addConstraint(getTopConstraint(from: imageView, to: view)) |
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view.addConstraint(getBottomConstraint(from: imageView, to: view)) |
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view.addConstraint(getWidthConstraint(view: imageView, width: view.frame.width)) |
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view.addConstraint(getHeightConstraint(view: imageView, height: view.frame.width)) |
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case 2: |
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let filter = AspectScaledToFillSizeFilter(size: CGSize(width: (view.frame.width / 2) - 2, height: view.frame.width)) |
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|
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let firstImageView = UIImageView() |
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let secondImageView = UIImageView() |
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|
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[firstImageView, secondImageView].forEach { imageView in |
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imageView.contentMode = UIImageView.ContentMode.scaleAspectFill |
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} |
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|
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firstImageView.af_setImage( |
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withURL: (attachments[0] as! AttachmentMO).url!, |
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placeholderImage: placeholderImage, |
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filter: filter |
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) |
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|
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secondImageView.af_setImage( |
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withURL: (attachments[1] as! AttachmentMO).url!, |
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placeholderImage: placeholderImage, |
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filter: filter |
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) |
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|
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view.addSubview(firstImageView) |
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view.addSubview(secondImageView) |
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|
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[firstImageView, secondImageView].forEach { imageView in |
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view.addConstraint(getLeadingConstraint(from: imageView, to: view)) |
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view.addConstraint(getTrailingConstraint(from: imageView, to: view)) |
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view.addConstraint(getTopConstraint(from: imageView, to: view)) |
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view.addConstraint(getBottomConstraint(from: imageView, to: view)) |
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view.addConstraint(getHeightConstraint(view: imageView, height: view.frame.width)) |
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view.addConstraint(getWidthConstraint(view: imageView, width: (view.frame.width / 2) - 2)) |
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} |
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|
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let betweenConstraint = NSLayoutConstraint( |
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item: firstImageView, |
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attribute: NSLayoutConstraint.Attribute.trailing, |
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relatedBy: NSLayoutConstraint.Relation.equal, |
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toItem: secondImageView, |
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attribute: NSLayoutConstraint.Attribute.leading, |
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multiplier: 1, |
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constant: 4 |
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) |
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|
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view.addConstraint(betweenConstraint) |
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case 3: |
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let halfWidth = (view.frame.width / 2) - 2 |
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|
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let primaryFilter = AspectScaledToFillSizeFilter(size: CGSize(width: halfWidth, height: view.frame.width)) |
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let secondaryFilter = AspectScaledToFillSizeFilter(size: CGSize(width: halfWidth, height: halfWidth)) |
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|
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let firstImageView = UIImageView() |
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let secondImageView = UIImageView() |
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let thirdImageView = UIImageView() |
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|
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[firstImageView, secondImageView, thirdImageView].forEach { imageView in |
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imageView.contentMode = UIImageView.ContentMode.scaleAspectFill |
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} |
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|
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firstImageView.af_setImage( |
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withURL: (attachments[0] as! AttachmentMO).url!, |
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placeholderImage: placeholderImage, |
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filter: primaryFilter |
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) |
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|
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secondImageView.af_setImage( |
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withURL: (attachments[1] as! AttachmentMO).url!, |
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placeholderImage: placeholderImage, |
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filter: secondaryFilter |
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) |
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|
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thirdImageView.af_setImage( |
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withURL: (attachments[2] as! AttachmentMO).url!, |
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placeholderImage: placeholderImage, |
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filter: secondaryFilter |
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) |
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|
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view.addSubview(firstImageView) |
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view.addSubview(secondImageView) |
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view.addSubview(thirdImageView) |
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|
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view.addConstraint(getLeadingConstraint(from: firstImageView, to: view)) |
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view.addConstraint(getTopConstraint(from: firstImageView, to: view)) |
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view.addConstraint(getBottomConstraint(from: firstImageView, to: view)) |
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view.addConstraint(getHeightConstraint(view: firstImageView, height: view.frame.width)) |
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view.addConstraint(getWidthConstraint(view: firstImageView, width: halfWidth)) |
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|
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view.addConstraint(getTopConstraint(from: secondImageView, to: view)) |
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view.addConstraint(getBottomConstraint(from: thirdImageView, to: view)) |
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[secondImageView, thirdImageView].forEach { imageView in |
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view.addConstraint(getTrailingConstraint(from: imageView, to: view)) |
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view.addConstraint(getHeightConstraint(view: imageView, height: halfWidth)) |
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view.addConstraint(getWidthConstraint(view: imageView, width: halfWidth)) |
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} |
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|
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let firstSecondConstraint = NSLayoutConstraint( |
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item: firstImageView, |
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attribute: NSLayoutConstraint.Attribute.trailing, |
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relatedBy: NSLayoutConstraint.Relation.equal, |
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toItem: secondImageView, |
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attribute: NSLayoutConstraint.Attribute.leading, |
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multiplier: 1, |
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constant: 4 |
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) |
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|
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let firstThirdConstraint = NSLayoutConstraint( |
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item: firstImageView, |
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attribute: NSLayoutConstraint.Attribute.trailing, |
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relatedBy: NSLayoutConstraint.Relation.equal, |
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toItem: thirdImageView, |
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attribute: NSLayoutConstraint.Attribute.leading, |
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multiplier: 1, |
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constant: 4 |
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) |
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|
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let secondThirdConstraint = NSLayoutConstraint( |
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item: secondImageView, |
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attribute: NSLayoutConstraint.Attribute.bottom, |
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relatedBy: NSLayoutConstraint.Relation.equal, |
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toItem: thirdImageView, |
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attribute: NSLayoutConstraint.Attribute.top, |
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multiplier: 1, |
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constant: 4 |
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) |
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|
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view.addConstraints([firstSecondConstraint, firstThirdConstraint, secondThirdConstraint]) |
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default: |
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let halfWidth = (view.frame.width / 2) - 2 |
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let filter = AspectScaledToFillSizeFilter(size: CGSize(width: halfWidth, height: halfWidth)) |
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let firstImageView = UIImageView() |
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let secondImageView = UIImageView() |
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let thirdImageView = UIImageView() |
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let fourthImageView = UIImageView() |
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|
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[firstImageView, secondImageView, thirdImageView, fourthImageView].forEach { imageView in |
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imageView.contentMode = UIImageView.ContentMode.scaleAspectFill |
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} |
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|
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firstImageView.af_setImage( |
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withURL: (attachments[0] as! AttachmentMO).url!, |
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placeholderImage: placeholderImage, |
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filter: filter |
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) |
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|
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secondImageView.af_setImage( |
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withURL: (attachments[1] as! AttachmentMO).url!, |
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placeholderImage: placeholderImage, |
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filter: filter |
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) |
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|
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thirdImageView.af_setImage( |
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withURL: (attachments[2] as! AttachmentMO).url!, |
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placeholderImage: placeholderImage, |
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filter: filter |
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) |
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|
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fourthImageView.af_setImage( |
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withURL: (attachments[3] as! AttachmentMO).url!, |
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placeholderImage: placeholderImage, |
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filter: filter |
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) |
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|
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view.addSubview(firstImageView) |
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view.addSubview(secondImageView) |
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view.addSubview(thirdImageView) |
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view.addSubview(fourthImageView) |
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|
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[firstImageView, secondImageView, thirdImageView, fourthImageView].forEach { imageView in |
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view.addConstraint(getHeightConstraint(view: imageView, height: halfWidth)) |
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view.addConstraint(getWidthConstraint(view: imageView, width: halfWidth)) |
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} |
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|
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[firstImageView, secondImageView].forEach { imageView in |
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view.addConstraint(getTopConstraint(from: imageView, to: view)) |
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} |
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|
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[thirdImageView, fourthImageView].forEach { imageView in |
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view.addConstraint(getBottomConstraint(from: imageView, to: view)) |
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} |
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|
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[firstImageView, thirdImageView].forEach { imageView in |
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view.addConstraint(getLeadingConstraint(from: imageView, to: view)) |
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} |
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|
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[secondImageView, fourthImageView].forEach { imageView in |
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view.addConstraint(getTrailingConstraint(from: imageView, to: view)) |
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} |
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|
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let firstBetweenConstraint = NSLayoutConstraint( |
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item: firstImageView, |
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attribute: NSLayoutConstraint.Attribute.trailing, |
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relatedBy: NSLayoutConstraint.Relation.equal, |
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toItem: secondImageView, |
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attribute: NSLayoutConstraint.Attribute.leading, |
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multiplier: 1, |
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constant: 4 |
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) |
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|
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let secondBetweenConstraint = NSLayoutConstraint( |
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item: secondImageView, |
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attribute: NSLayoutConstraint.Attribute.bottom, |
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relatedBy: NSLayoutConstraint.Relation.equal, |
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toItem: fourthImageView, |
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attribute: NSLayoutConstraint.Attribute.top, |
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multiplier: 1, |
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constant: 4 |
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) |
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|
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let thirdBetweenConstraint = NSLayoutConstraint( |
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item: fourthImageView, |
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attribute: NSLayoutConstraint.Attribute.leading, |
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relatedBy: NSLayoutConstraint.Relation.equal, |
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toItem: thirdImageView, |
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attribute: NSLayoutConstraint.Attribute.trailing, |
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multiplier: 1, |
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constant: 4 |
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) |
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|
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let fourthBetweenConstraint = NSLayoutConstraint( |
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item: thirdImageView, |
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attribute: NSLayoutConstraint.Attribute.top, |
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relatedBy: NSLayoutConstraint.Relation.equal, |
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toItem: firstImageView, |
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attribute: NSLayoutConstraint.Attribute.bottom, |
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multiplier: 1, |
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constant: 4 |
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) |
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|
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view.addConstraints([ |
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firstBetweenConstraint, |
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secondBetweenConstraint, |
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thirdBetweenConstraint, |
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fourthBetweenConstraint, |
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]) |
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} |
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} |
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|
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static func getTopConstraint(from: UIView, to: UIView) -> NSLayoutConstraint { |
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return NSLayoutConstraint( |
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item: from, |
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attribute: NSLayoutConstraint.Attribute.top, |
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relatedBy: NSLayoutConstraint.Relation.equal, |
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toItem: to, |
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attribute: NSLayoutConstraint.Attribute.top, |
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multiplier: 1, |
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constant: 0 |
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) |
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} |
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|
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static func getBottomConstraint(from: UIView, to: UIView) -> NSLayoutConstraint { |
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return NSLayoutConstraint( |
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item: from, |
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attribute: NSLayoutConstraint.Attribute.bottom, |
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relatedBy: NSLayoutConstraint.Relation.equal, |
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toItem: to, |
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attribute: NSLayoutConstraint.Attribute.bottom, |
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multiplier: 1, |
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constant: 0 |
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) |
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} |
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|
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static func getLeadingConstraint(from: UIView, to: UIView) -> NSLayoutConstraint { |
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return NSLayoutConstraint( |
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item: from, |
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attribute: NSLayoutConstraint.Attribute.leading, |
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relatedBy: NSLayoutConstraint.Relation.equal, |
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toItem: to, |
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attribute: NSLayoutConstraint.Attribute.leading, |
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multiplier: 1, |
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constant: 0 |
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) |
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} |
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|
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static func getTrailingConstraint(from: UIView, to: UIView) -> NSLayoutConstraint { |
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return NSLayoutConstraint( |
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item: from, |
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attribute: NSLayoutConstraint.Attribute.trailing, |
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relatedBy: NSLayoutConstraint.Relation.equal, |
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toItem: to, |
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attribute: NSLayoutConstraint.Attribute.trailing, |
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multiplier: 1, |
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constant: 0 |
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) |
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} |
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|
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static func getWidthConstraint(view: UIView, width: CGFloat) -> NSLayoutConstraint { |
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return NSLayoutConstraint( |
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item: view, |
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attribute: NSLayoutConstraint.Attribute.width, |
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relatedBy: NSLayoutConstraint.Relation.equal, |
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toItem: nil, |
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attribute: NSLayoutConstraint.Attribute.notAnAttribute, |
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multiplier: 1, |
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constant: width |
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) |
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} |
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|
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static func getHeightConstraint(view: UIView, height: CGFloat) -> NSLayoutConstraint { |
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return NSLayoutConstraint( |
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item: view, |
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attribute: NSLayoutConstraint.Attribute.height, |
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relatedBy: NSLayoutConstraint.Relation.equal, |
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toItem: nil, |
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attribute: NSLayoutConstraint.Attribute.notAnAttribute, |
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multiplier: 1, |
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constant: height |
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) |
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} |
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} |
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