101 lines
4.8 KiB
Swift
101 lines
4.8 KiB
Swift
//
|
||
// JXSegmentedTitleImageCell.swift
|
||
// JXSegmentedView
|
||
//
|
||
// Created by jiaxin on 2018/12/29.
|
||
// Copyright © 2018 jiaxin. All rights reserved.
|
||
//
|
||
|
||
import UIKit
|
||
|
||
open class JXSegmentedTitleImageCell: JXSegmentedTitleCell {
|
||
public let imageView = UIImageView()
|
||
private var currentImageInfo: String?
|
||
|
||
open override func prepareForReuse() {
|
||
super.prepareForReuse()
|
||
|
||
currentImageInfo = nil
|
||
}
|
||
|
||
open override func commonInit() {
|
||
super.commonInit()
|
||
|
||
imageView.contentMode = .scaleAspectFit
|
||
contentView.addSubview(imageView)
|
||
}
|
||
|
||
open override func layoutSubviews() {
|
||
super.layoutSubviews()
|
||
|
||
guard let myItemModel = itemModel as? JXSegmentedTitleImageItemModel else {
|
||
return
|
||
}
|
||
|
||
let imageSize = myItemModel.imageSize
|
||
switch myItemModel.titleImageType {
|
||
case .topImage:
|
||
let contentHeight = imageSize.height + myItemModel.titleImageSpacing + titleLabel.bounds.size.height
|
||
imageView.center = CGPoint(x: contentView.bounds.size.width/2, y: (contentView.bounds.size.height - contentHeight)/2 + imageSize.height/2)
|
||
titleLabel.center = CGPoint(x: contentView.bounds.size.width/2, y: imageView.frame.maxY + myItemModel.titleImageSpacing + titleLabel.bounds.size.height/2)
|
||
case .leftImage:
|
||
let contentWidth = imageSize.width + myItemModel.titleImageSpacing + titleLabel.bounds.size.width
|
||
imageView.center = CGPoint(x: (contentView.bounds.size.width - contentWidth)/2 + imageSize.width/2, y: contentView.bounds.size.height/2)
|
||
titleLabel.center = CGPoint(x: imageView.frame.maxX + myItemModel.titleImageSpacing + titleLabel.bounds.size.width/2, y: contentView.bounds.size.height/2)
|
||
case .bottomImage:
|
||
let contentHeight = imageSize.height + myItemModel.titleImageSpacing + titleLabel.bounds.size.height
|
||
titleLabel.center = CGPoint(x: contentView.bounds.size.width/2, y: (contentView.bounds.size.height - contentHeight)/2 + titleLabel.bounds.size.height/2)
|
||
imageView.center = CGPoint(x: contentView.bounds.size.width/2, y: titleLabel.frame.maxY + myItemModel.titleImageSpacing + imageSize.height/2)
|
||
case .rightImage:
|
||
let contentWidth = imageSize.width + myItemModel.titleImageSpacing + titleLabel.bounds.size.width
|
||
titleLabel.center = CGPoint(x: (contentView.bounds.size.width - contentWidth)/2 + titleLabel.bounds.size.width/2, y: contentView.bounds.size.height/2)
|
||
imageView.center = CGPoint(x: titleLabel.frame.maxX + myItemModel.titleImageSpacing + imageSize.width/2, y: contentView.bounds.size.height/2)
|
||
case .onlyImage:
|
||
imageView.center = CGPoint(x: contentView.bounds.size.width/2, y: contentView.bounds.size.height/2)
|
||
case .onlyTitle:
|
||
titleLabel.center = CGPoint(x: contentView.bounds.size.width/2, y: contentView.bounds.size.height/2)
|
||
}
|
||
}
|
||
|
||
open override func reloadData(itemModel: JXSegmentedBaseItemModel, selectedType: JXSegmentedViewItemSelectedType) {
|
||
super.reloadData(itemModel: itemModel, selectedType: selectedType )
|
||
|
||
guard let myItemModel = itemModel as? JXSegmentedTitleImageItemModel else {
|
||
return
|
||
}
|
||
|
||
titleLabel.isHidden = false
|
||
imageView.isHidden = false
|
||
if myItemModel.titleImageType == .onlyTitle {
|
||
imageView.isHidden = true
|
||
}else if myItemModel.titleImageType == .onlyImage {
|
||
titleLabel.isHidden = true
|
||
}
|
||
|
||
imageView.bounds = CGRect(x: 0, y: 0, width: myItemModel.imageSize.width, height: myItemModel.imageSize.height)
|
||
|
||
var normalImageInfo = myItemModel.normalImageInfo
|
||
if myItemModel.isSelected && myItemModel.selectedImageInfo != nil {
|
||
normalImageInfo = myItemModel.selectedImageInfo
|
||
}
|
||
|
||
//因为`func reloadData(itemModel: JXSegmentedBaseItemModel, selectedType: JXSegmentedViewItemSelectedType)`方法会回调多次，尤其是左右滚动的时候会调用无数次。如果每次都触发图片加载，会非常消耗性能。所以只会在图片发生了变化的时候，才进行图片加载。
|
||
if normalImageInfo != nil && normalImageInfo != currentImageInfo {
|
||
currentImageInfo = normalImageInfo
|
||
if myItemModel.loadImageClosure != nil {
|
||
myItemModel.loadImageClosure!(imageView, normalImageInfo!)
|
||
}else {
|
||
imageView.image = UIImage(named: normalImageInfo!)
|
||
}
|
||
}
|
||
|
||
if myItemModel.isImageZoomEnabled {
|
||
imageView.transform = CGAffineTransform(scaleX: myItemModel.imageCurrentZoomScale, y: myItemModel.imageCurrentZoomScale)
|
||
}else {
|
||
imageView.transform = .identity
|
||
}
|
||
|
||
setNeedsLayout()
|
||
}
|
||
}
|