105 lines
3.7 KiB
Swift
105 lines
3.7 KiB
Swift
//
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// GridCollectionViewCell.swift
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// Delta
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//
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// Created by Riley Testut on 10/21/15.
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// Copyright © 2015 Riley Testut. All rights reserved.
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//
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import UIKit
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class GridCollectionViewCell: UICollectionViewCell
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{
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@IBOutlet private(set) var imageView: UIImageView!
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@IBOutlet private(set) var textLabel: UILabel!
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var maximumImageSize: CGSize = CGSize(width: 100, height: 100) {
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didSet {
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self.updateMaximumImageSize()
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}
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}
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@IBOutlet private var imageViewWidthConstraint: NSLayoutConstraint!
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@IBOutlet private var imageViewHeightConstraint: NSLayoutConstraint!
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@IBOutlet private var textLabelBottomAnchorConstraint: NSLayoutConstraint!
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@IBOutlet private var textLabelVerticalSpacingConstraint: NSLayoutConstraint!
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private var textLabelFocusedVerticalSpacingConstraint: NSLayoutConstraint?
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override func awakeFromNib()
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{
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super.awakeFromNib()
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// Fix super annoying Unsatisfiable Constraints message in debugger by setting autoresizingMask
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self.contentView.autoresizingMask = [.FlexibleWidth, .FlexibleHeight]
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self.imageView.translatesAutoresizingMaskIntoConstraints = false
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#if os(tvOS)
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self.imageView.adjustsImageWhenAncestorFocused = true
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#endif
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self.contentView.addSubview(self.imageView)
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self.textLabel.translatesAutoresizingMaskIntoConstraints = false
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self.textLabel.font = UIFont.boldSystemFontOfSize(12)
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self.textLabel.textAlignment = .Center
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self.textLabel.numberOfLines = 0
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self.contentView.addSubview(self.textLabel)
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// Auto Layout
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#if os(tvOS)
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self.textLabelVerticalSpacingConstraint.active = false
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self.textLabelFocusedVerticalSpacingConstraint = self.textLabel.topAnchor.constraintEqualToAnchor(self.imageView.focusedFrameGuide.bottomAnchor, constant: verticalSpacingConstant)
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self.textLabelFocusedVerticalSpacingConstraint?.active = true
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#else
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self.textLabelVerticalSpacingConstraint.active = true
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#endif
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self.updateMaximumImageSize()
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}
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override func didUpdateFocusInContext(context: UIFocusUpdateContext, withAnimationCoordinator coordinator: UIFocusAnimationCoordinator)
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{
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super.didUpdateFocusInContext(context, withAnimationCoordinator: coordinator)
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coordinator.addCoordinatedAnimations({
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if context.nextFocusedView == self
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{
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self.textLabelBottomAnchorConstraint?.active = false
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self.textLabelVerticalSpacingConstraint.active = false
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self.textLabelFocusedVerticalSpacingConstraint?.active = true
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self.textLabel.textColor = UIColor.whiteColor()
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}
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else
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{
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self.textLabelFocusedVerticalSpacingConstraint?.active = false
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self.textLabelBottomAnchorConstraint?.active = true
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self.textLabelVerticalSpacingConstraint.active = true
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self.textLabel.textColor = UIColor.blackColor()
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}
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self.layoutIfNeeded()
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}, completion: nil)
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}
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}
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private extension GridCollectionViewCell
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{
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func updateMaximumImageSize()
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{
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self.imageViewWidthConstraint.constant = self.maximumImageSize.width
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self.imageViewHeightConstraint.constant = self.maximumImageSize.height
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self.textLabelVerticalSpacingConstraint.constant = self.maximumImageSize.height / 10.0
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self.textLabelFocusedVerticalSpacingConstraint?.constant = self.maximumImageSize.height / 10.0
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}
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} |