import Cocoa
import Quartz
-class ScreenshotCollectionViewItem: NSCollectionViewItem {
+final class ScreenshotCollectionViewItem: NSCollectionViewItem {
+
@IBOutlet weak var imageBox: NSBox!
@IBOutlet weak var nameField: NSTextField!
@IBOutlet weak var nameBox: NSBox!
var info: ScreenshotInformation? {
+
return representedObject as? ScreenshotInformation
}
+
var imageFrame: NSRect {
+
guard let imageView = imageView
else { fatalError("ScreenshotCollectionViewItem: imageView is nil") }
+
let frame = centerFitRect(imageView.image, target: imageView.frame)
+
return view.convert(frame, from: imageBox)
}
override var isSelected: Bool {
+
didSet {
(imageBox.fillColor, nameField.textColor, nameBox.fillColor) = {
+
if isSelected {
+
return (NSColor.controlHighlightColor, NSColor.white, NSColor.alternateSelectedControlColor)
+
} else {
+
return (NSColor.white, NSColor.black, NSColor.white)
}
}()
}
private func centerFitRect(_ image: NSImage?, target: NSRect) -> NSRect {
+
guard let image = image else { return target }
+
let imageSize = image.size
var ratio: CGFloat = 1
let ratioX = target.size.height / imageSize.height
let ratioY = target.size.width / imageSize.width
if ratioX > ratioY {
+
ratio = ratioY
+
} else {
+
ratio = ratioX
}
let fitSize = NSSize(width: imageSize.width * ratio, height: imageSize.height * ratio)
let left = (target.size.width - fitSize.width) * 0.5
let bottom = (target.size.height - fitSize.height) * 0.5
+
return NSRect(x: left, y: bottom, width: fitSize.width, height: fitSize.height)
}
}
extension ScreenshotCollectionViewItem: QLPreviewItem {
+
var previewItemURL: URL! {
+
return info?.url
}
}