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62 lines
2.3 KiB
62 lines
2.3 KiB
6 years ago
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// Copyright © 2015 Abhishek Banthia
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import Cocoa
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struct BackgroundPanelConstants {
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static let kArrowHeight: CGFloat = 8
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static let kCornerRadius: CGFloat = 8
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static let kBorderWidth: CGFloat = 1
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}
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class BackgroundPanelView: NSView {
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private var arrowX: CGFloat = -1
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private var trackingArea: NSTrackingArea?
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override func draw(_ dirtyRect: NSRect) {
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super.draw(dirtyRect)
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NSColor.clear.set()
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bounds.fill(using: .copy)
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var rect = bounds.insetBy(dx: 1, dy: 0)
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rect.origin.y = BackgroundPanelConstants.kBorderWidth
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rect.size.height -= (BackgroundPanelConstants.kArrowHeight + (2 * BackgroundPanelConstants.kBorderWidth))
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let rectPath = NSBezierPath(roundedRect: rect,
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xRadius: BackgroundPanelConstants.kCornerRadius,
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yRadius: BackgroundPanelConstants.kCornerRadius)
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// Append the arrow to the body if its right ege is inside
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// the right edge of the body (taking into account the corner
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// radius).
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let curveOffset: CGFloat = 5
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let arrowMidX = frame.midX
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let arrowRightEdge = arrowMidX + curveOffset + BackgroundPanelConstants.kArrowHeight
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let bodyRightEdge = rect.maxX - BackgroundPanelConstants.kCornerRadius
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if arrowRightEdge < bodyRightEdge {
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let arrowPath = NSBezierPath()
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let xOrdinate = arrowMidX - BackgroundPanelConstants.kArrowHeight - curveOffset
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let yOrdinate = frame.height - BackgroundPanelConstants.kArrowHeight - BackgroundPanelConstants.kBorderWidth
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arrowPath.move(to: NSPoint(x: xOrdinate, y: yOrdinate))
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arrowPath.relativeCurve(to: NSPoint(x: BackgroundPanelConstants.kArrowHeight + curveOffset, y: BackgroundPanelConstants.kBorderWidth), controlPoint1: NSPoint(x: curveOffset, y: 0), controlPoint2: NSPoint(x: BackgroundPanelConstants.kArrowHeight, y: BackgroundPanelConstants.kArrowHeight))
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}
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Themer.shared().mainBackgroundColor().setFill()
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rectPath.lineWidth = 2 * BackgroundPanelConstants.kBorderWidth
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rectPath.stroke()
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rectPath.fill()
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}
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override var allowsVibrancy: Bool {
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return true
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}
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@objc func setArrowX(value: CGFloat) {
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arrowX = value
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setNeedsDisplay(bounds)
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}
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}
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