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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,241 @@ | ||
| // | ||
| // Popover.swift | ||
| // Calendr | ||
| // | ||
| // Created by Paker on 14/04/24. | ||
| // | ||
|
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| import AppKit | ||
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| var popovers: [Popover] = [] | ||
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| @objc protocol PopoverDelegate { | ||
| @objc optional func popoverWillShow() | ||
| @objc optional func popoverDidShow() | ||
| @objc optional func popoverWillClose() | ||
| @objc optional func popoverDidClose() | ||
| } | ||
|
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| class Popover: NSObject, PopoverWindowDelegate { | ||
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| private var window: PopoverWindow? | ||
| private var isClosing = false | ||
|
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| var contentViewController: NSViewController? | ||
| var delegate: PopoverDelegate? | ||
| var behavior: NSPopover.Behavior = .transient | ||
|
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| func show(from view: NSView) { | ||
| present(from: view, edge: .maxY, spacing: 0, single: true) | ||
| } | ||
|
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| func push(from view: NSView) { | ||
| present(from: view, edge: .minX, spacing: 8, single: false) | ||
| } | ||
|
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| func present(from view: NSView, edge: NSRectEdge, spacing: CGFloat, single: Bool) { | ||
|
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| if let window { | ||
| return window.move(to: view, edge: edge, spacing: spacing) | ||
| } | ||
|
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| if single { | ||
| closeAll() | ||
| } | ||
|
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| guard let contentViewController else { return } | ||
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| delegate?.popoverWillShow?() | ||
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| let contentView = contentViewController.view.forAutoLayout() | ||
| let container = NSVisualEffectView() | ||
| container.maskImage = .mask(withCornerRadius: 12) | ||
| container.state = .active | ||
| container.addSubview(contentView) | ||
| container.edges(to: contentView) | ||
|
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| let window = PopoverWindow() | ||
| window.contentView = container | ||
| window.isOpaque = false | ||
| window.backgroundColor = .clear | ||
| window.styleMask = .borderless | ||
| window.level = .floating | ||
| window.isReleasedWhenClosed = false | ||
| window._delegate = self | ||
| window.move(to: view, edge: edge, spacing: spacing) | ||
| window.activate() | ||
|
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| delegate?.popoverDidShow?() | ||
|
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| self.window = window | ||
|
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| popovers.append(self) | ||
| } | ||
|
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| private var isMouseInside: Bool { | ||
| guard let window else { return false } | ||
| return NSMouseInRect(NSEvent.mouseLocation, window.frame, false) | ||
| } | ||
|
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| private func closeAll() { | ||
| for popover in popovers { | ||
| popover.window?.performClose(nil) | ||
| } | ||
| } | ||
|
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| func windowDidResignKey(_ notification: Notification) { | ||
|
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| guard !isClosing else { | ||
| return | ||
| } | ||
|
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| guard NSApp.isActive else { | ||
| return closeAll() | ||
| } | ||
|
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| guard !isMouseInside else { | ||
| return | ||
| } | ||
|
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| window?.performClose(nil) | ||
| } | ||
|
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| func windowShouldClose(_ sender: NSWindow) -> Bool { | ||
| behavior == .transient | ||
| } | ||
|
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| func windowWillClose(_ notification: Notification) { | ||
| isClosing = true | ||
| let wasTop = popovers.last == self | ||
|
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| delegate?.popoverWillClose?() | ||
| popovers.removeAll { $0 == self } | ||
| delegate?.popoverDidClose?() | ||
|
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| guard wasTop, let newTop = popovers.last?.window else { | ||
| return | ||
| } | ||
|
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| newTop.activate() | ||
| } | ||
| } | ||
|
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| @objc protocol PopoverWindowDelegate: NSWindowDelegate { | ||
| @objc optional func windowDidClose() | ||
| } | ||
|
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| private class PopoverWindow: NSWindow { | ||
|
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| override weak var delegate: NSWindowDelegate? { | ||
| set { | ||
| assert(newValue == nil) | ||
| _delegate = nil | ||
| } | ||
| get { _delegate } | ||
| } | ||
|
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| weak var _delegate: PopoverWindowDelegate? { | ||
| didSet { | ||
| super.delegate = _delegate | ||
| } | ||
| } | ||
|
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| override var canBecomeKey: Bool { | ||
| return true | ||
| } | ||
|
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| override var acceptsFirstResponder: Bool { | ||
| return true | ||
| } | ||
|
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| override func cancelOperation(_ sender: Any?) { | ||
| performClose(nil) | ||
| } | ||
|
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| override func performClose(_ sender: Any?) { | ||
| guard delegate?.windowShouldClose?(self) != false else { | ||
| return | ||
| } | ||
| close() | ||
| } | ||
|
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| override func close() { | ||
| super.close() | ||
| _delegate?.windowDidClose?() | ||
| } | ||
|
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| func activate() { | ||
| makeKeyAndOrderFront(nil) | ||
| NSRunningApplication.current.activate() | ||
| NSApp.activate(ignoringOtherApps: true) | ||
| makeFirstResponder(nil) | ||
| } | ||
|
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| func move(to anchor: NSView, edge: NSRectEdge, spacing: CGFloat) { | ||
|
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| if let origin = relativePosition(to: anchor, edge: edge, spacing: spacing) { | ||
| setFrameOrigin(origin) | ||
| } | ||
| } | ||
|
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| private func relativePosition(to view: NSView, edge: NSRectEdge, spacing: CGFloat) -> NSPoint? { | ||
|
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| guard let viewWindow = view.window, let screen = NSScreen.main else { | ||
| return nil | ||
| } | ||
|
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| struct Limits { | ||
| let minX: CGFloat | ||
| let maxX: CGFloat | ||
| let minY: CGFloat | ||
| let maxY: CGFloat | ||
| } | ||
|
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| let limit = Limits( | ||
| minX: screen.visibleFrame.minX, | ||
| maxX: screen.visibleFrame.maxX - frame.width, | ||
| minY: screen.visibleFrame.minY, | ||
| maxY: screen.visibleFrame.maxY - frame.height | ||
| ) | ||
|
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| // screen coordinates are inverted | ||
| let viewFrame = viewWindow.convertToScreen(view.convert(view.bounds, to: nil)) | ||
|
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| var position: NSPoint? | ||
|
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| let centerX = min(limit.maxX, max(limit.minX, viewFrame.midX - frame.width / 2)) | ||
| let centerY = min(limit.maxY, max(limit.minY, viewFrame.midY - frame.height / 2)) | ||
|
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| switch edge { | ||
| case .minX: | ||
| position = NSPoint(x: max(limit.minX, viewFrame.minX - frame.width - spacing), y: centerY) | ||
| case .maxX: | ||
| position = NSPoint(x: min(limit.maxX, viewFrame.maxX + spacing), y: centerY) | ||
| case .minY: | ||
| position = NSPoint(x: centerX, y: min(limit.maxY, viewFrame.maxY + spacing)) | ||
| case .maxY: | ||
| position = NSPoint(x: centerX, y: max(limit.minY, viewFrame.minY - frame.height - spacing)) | ||
| default: | ||
| break | ||
| } | ||
|
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| return position | ||
| } | ||
| } | ||
|
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| private extension NSImage { | ||
|
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| static func mask(withCornerRadius radius: CGFloat) -> NSImage { | ||
|
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| let image = NSImage(size: NSSize(width: radius * 2, height: radius * 2), flipped: false) { | ||
| NSBezierPath(roundedRect: $0, xRadius: radius, yRadius: radius).fill() | ||
| NSColor.black.set() | ||
| return true | ||
| } | ||
|
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| image.capInsets = NSEdgeInsets(top: radius, left: radius, bottom: radius, right: radius) | ||
| image.resizingMode = .stretch | ||
|
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| return image | ||
| } | ||
| } |
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