100 lines
2.7 KiB
Swift
100 lines
2.7 KiB
Swift
//
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// UnreadCountView.swift
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// Evergreen
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//
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// Created by Brent Simmons on 11/22/15.
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// Copyright © 2015 Ranchero Software, LLC. All rights reserved.
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//
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import Foundation
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import AppKit
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private let padding = appDelegate.currentTheme.edgeInsets(forKey: "MainWindow.SourceList.unreadCount.padding")
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private let cornerRadius = appDelegate.currentTheme.float(forKey: "MainWindow.SourceList.unreadCount.cornerRadius")
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private let backgroundColor = appDelegate.currentTheme.colorWithAlpha(forKey: "MainWindow.SourceList.unreadCount.backgroundColor")
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private let textColor = appDelegate.currentTheme.colorWithAlpha(forKey: "MainWindow.SourceList.unreadCount.color")
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private let textSize = appDelegate.currentTheme.float(forKey: "MainWindow.SourceList.unreadCount.fontSize")
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private let textFont = NSFont.systemFont(ofSize: textSize, weight: NSFont.Weight.semibold)
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private var textAttributes: [NSAttributedStringKey: AnyObject] = [NSAttributedStringKey.foregroundColor: textColor, NSAttributedStringKey.font: textFont, NSAttributedStringKey.kern: NSNull()]
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private var textSizeCache = [Int: NSSize]()
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class UnreadCountView : NSView {
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var unreadCount = 0 {
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didSet {
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invalidateIntrinsicContentSize()
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needsDisplay = true
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}
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}
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var unreadCountString: String {
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return unreadCount < 1 ? "" : "\(unreadCount)"
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}
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private var intrinsicContentSizeIsValid = false
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private var _intrinsicContentSize = NSZeroSize
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override var intrinsicContentSize: NSSize {
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if !intrinsicContentSizeIsValid {
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var size = NSZeroSize
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if unreadCount > 0 {
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size = textSize()
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size.width += (padding.left + padding.right)
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size.height += (padding.top + padding.bottom)
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}
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_intrinsicContentSize = size
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intrinsicContentSizeIsValid = true
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}
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return _intrinsicContentSize
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}
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override var isFlipped: Bool {
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return true
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}
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override func invalidateIntrinsicContentSize() {
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intrinsicContentSizeIsValid = false
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}
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private func textSize() -> NSSize {
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if unreadCount < 1 {
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return NSZeroSize
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}
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if let cachedSize = textSizeCache[unreadCount] {
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return cachedSize
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}
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var size = unreadCountString.size(withAttributes: textAttributes)
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size.height = ceil(size.height)
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size.width = ceil(size.width)
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textSizeCache[unreadCount] = size
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return size
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}
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private func textRect() -> NSRect {
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let size = textSize()
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var r = NSZeroRect
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r.size = size
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r.origin.x = (NSMaxX(bounds) - padding.right) - r.size.width
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r.origin.y = padding.top
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return r
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}
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override func draw(_ dirtyRect: NSRect) {
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let path = NSBezierPath(roundedRect: bounds, xRadius: cornerRadius, yRadius: cornerRadius)
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backgroundColor.setFill()
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path.fill()
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if unreadCount > 0 {
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unreadCountString.draw(at: textRect().origin, withAttributes: textAttributes)
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}
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}
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}
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