feat: snap launcher to stippled edge alignment guides
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@@ -1,4 +1,5 @@
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import AppKit
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import ConjureKit
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@MainActor
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final class LauncherAlignmentGuides {
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@@ -16,21 +17,38 @@ final class LauncherAlignmentGuides {
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return panel
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}()
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private var dragging = false
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private var updating = false
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private var dragOrigin = NSPoint.zero
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private var mouseOrigin = NSPoint.zero
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func begin(for window: NSWindow) {
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guard window.screen != nil else { return }
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guard !dragging, window.screen != nil else { return }
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dragging = true
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dragOrigin = window.frame.origin
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mouseOrigin = NSEvent.mouseLocation
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update(for: window)
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overlay.level = window.level
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overlay.order(.below, relativeTo: window.windowNumber)
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}
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func update(for window: NSWindow) {
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guard dragging, let screen = window.screen else { return }
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guard dragging, !updating, let screen = window.screen else { return }
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updating = true
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defer { updating = false }
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let frame = screen.visibleFrame
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let mouse = NSEvent.mouseLocation
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let proposed = NSRect(
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origin: NSPoint(x: dragOrigin.x + mouse.x - mouseOrigin.x, y: dragOrigin.y + mouse.y - mouseOrigin.y),
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size: window.frame.size
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)
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let alignment = LauncherAlignment(windowFrame: proposed, visibleFrame: frame)
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if window.frame.origin != alignment.snappedOrigin {
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window.setFrameOrigin(alignment.snappedOrigin)
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}
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if overlay.frame != frame {
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overlay.setFrame(frame, display: false)
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}
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view.targetFrame = alignment.targetFrame.offsetBy(dx: -frame.minX, dy: -frame.minY)
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view.launcherFrame = window.frame.offsetBy(dx: -frame.minX, dy: -frame.minY)
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view.alignmentTolerance = 1 / screen.backingScaleFactor
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view.needsDisplay = true
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@@ -46,6 +64,7 @@ final class LauncherAlignmentGuides {
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@MainActor
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private final class AlignmentGuideView: NSView {
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var launcherFrame = NSRect.zero
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var targetFrame = NSRect.zero
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var alignmentTolerance: CGFloat = 0.5
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private static let dash: [CGFloat] = [1, 5]
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private static let muted = SunsetPalette.accent.withAlphaComponent(0.4).cgColor
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@@ -59,23 +78,25 @@ private final class AlignmentGuideView: NSView {
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context.saveGState()
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defer { context.restoreGState() }
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context.addRect(bounds)
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context.addRect(launcherFrame.insetBy(dx: -8, dy: -8))
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context.addRect(launcherFrame.insetBy(dx: 0.75, dy: 0.75))
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context.clip(using: .evenOdd)
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context.setLineWidth(1.5)
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context.setLineCap(.round)
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context.setLineDash(phase: 0, lengths: Self.dash)
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context.setShadow(offset: .zero, blur: 2, color: Self.shadow)
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let centeredX = abs(launcherFrame.midX - bounds.midX) <= alignmentTolerance
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let centeredX = abs(launcherFrame.minX - targetFrame.minX) <= alignmentTolerance
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context.setStrokeColor(centeredX ? Self.aligned : Self.muted)
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context.move(to: NSPoint(x: bounds.midX, y: bounds.minY))
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context.addLine(to: NSPoint(x: bounds.midX, y: bounds.maxY))
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context.move(to: NSPoint(x: targetFrame.minX, y: bounds.minY))
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context.addLine(to: NSPoint(x: targetFrame.minX, y: bounds.maxY))
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context.move(to: NSPoint(x: targetFrame.maxX, y: bounds.minY))
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context.addLine(to: NSPoint(x: targetFrame.maxX, y: bounds.maxY))
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context.strokePath()
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let centeredY = abs(launcherFrame.midY - bounds.midY) <= alignmentTolerance
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let centeredY = abs(launcherFrame.maxY - targetFrame.maxY) <= alignmentTolerance
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context.setStrokeColor(centeredY ? Self.aligned : Self.muted)
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context.move(to: NSPoint(x: bounds.minX, y: bounds.midY))
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context.addLine(to: NSPoint(x: bounds.maxX, y: bounds.midY))
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context.move(to: NSPoint(x: bounds.minX, y: targetFrame.maxY))
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context.addLine(to: NSPoint(x: bounds.maxX, y: targetFrame.maxY))
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context.strokePath()
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}
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}
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@@ -0,0 +1,20 @@
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import Foundation
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public struct LauncherAlignment: Sendable {
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public let targetFrame: CGRect
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public let snappedOrigin: CGPoint
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public init(windowFrame: CGRect, visibleFrame: CGRect) {
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// Whole-point origins keep the guides aligned with AppKit's window positioning.
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targetFrame = CGRect(
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x: (visibleFrame.midX - windowFrame.width / 2).rounded(.down),
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y: (visibleFrame.midY - windowFrame.height / 2).rounded(.down),
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width: windowFrame.width,
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height: windowFrame.height
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)
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snappedOrigin = CGPoint(
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x: abs(windowFrame.minX - targetFrame.minX) <= 12 ? targetFrame.minX : windowFrame.minX,
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y: abs(windowFrame.maxY - targetFrame.maxY) <= 12 ? targetFrame.minY : windowFrame.minY
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)
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}
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}
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