jonmsterling.com
A collection of user interface components and drawing routines for building tasteful apps using AppKit.
appkit
swift
aqua
ui
mac
Refining the segmented control
+35
-28
+35
-28
Sources/AquaKit/Controls and Views/AquaSegmentedCell.swift
+35
-28
Sources/AquaKit/Controls and Views/AquaSegmentedCell.swift
···
5
5
import AppKit
6
6
7
7
open class AquaSegmentedCell: NSSegmentedCell {
8
+
private var highlightedSegment: Int?
9
+
8
10
func swoosh(in rect: NSRect) -> NSBezierPath {
9
11
let d: CGFloat = 20
10
12
let r: CGFloat = 20
···
106
108
}
107
109
}
108
110
111
+
open func selectionColor(withFrame cellFrame: NSRect, in controlView: NSView) -> NSColor? {
112
+
var color = NSColor.selectedControlColor.usingColorSpace(.displayP3)!
113
+
var lightGraphite: NSColor {
114
+
NSColor.graphiteColor.highlight(withLevel: 0.6)!
115
+
}
116
+
if color.isGrayscale {
117
+
color = lightGraphite
118
+
}
119
+
if let window = controlView.window, !window.isKeyWindow {
120
+
color = lightGraphite
121
+
}
122
+
color = color.modifyDark { color in
123
+
color.withAlphaComponent(0.4)
124
+
}
125
+
126
+
return color
127
+
}
128
+
129
+
open override func highlightColor(withFrame cellFrame: NSRect, in controlView: NSView) -> NSColor? {
130
+
selectionColor(withFrame: cellFrame, in: controlView).map { color in
131
+
color.withAlphaComponent(0.5)
132
+
}
133
+
}
134
+
109
135
open override func drawSegment(_ segment: Int, inFrame frame: NSRect, with controlView: NSView) {
110
136
if segment == selectedSegment {
111
-
var baseColor = NSColor.selectedControlColor.usingColorSpace(.displayP3)!
112
-
var lightGraphite: NSColor {
113
-
NSColor.graphiteColor.highlight(withLevel: 0.6)!
114
-
}
115
-
if baseColor.isGrayscale {
116
-
baseColor = lightGraphite
117
-
}
118
-
if let window = controlView.window, !window.isKeyWindow {
119
-
baseColor = lightGraphite
120
-
}
121
-
baseColor = baseColor.modifyDark { color in
122
-
color.withAlphaComponent(0.4)
123
-
}
137
+
selectionColor(withFrame: frame, in: controlView)!.setFill()
138
+
frame.fill(using: .multiply)
139
+
}
124
140
125
-
baseColor.setFill()
141
+
if segment == highlightedSegment {
142
+
highlightColor(withFrame: frame, in: controlView)!.setFill()
126
143
frame.fill(using: .multiply)
127
144
}
128
145
···
133
150
}
134
151
}
135
152
136
-
var savedSelectedSegment: Int?
137
-
138
153
func segment(at point: NSPoint, in controlView: NSView) -> Int? {
139
154
for segment in 0..<segmentCount {
140
155
let segmentRect = rect(forSegment: segment, in: controlView.bounds)
···
147
162
}
148
163
149
164
open override func startTracking(at startPoint: NSPoint, in controlView: NSView) -> Bool {
150
-
if let segment = segment(at: startPoint, in: controlView) {
151
-
savedSelectedSegment = selectedSegment
152
-
selectedSegment = segment
153
-
}
154
-
165
+
highlightedSegment = segment(at: startPoint, in: controlView)
155
166
return super.startTracking(at: startPoint, in: controlView)
156
167
}
157
168
158
169
open override func continueTracking(last lastPoint: NSPoint, current currentPoint: NSPoint, in controlView: NSView) -> Bool {
159
-
if !controlView.bounds.contains(currentPoint), let saved = savedSelectedSegment {
160
-
selectedSegment = saved
161
-
} else if let segment = segment(at: currentPoint, in: controlView) {
162
-
selectedSegment = segment
163
-
}
164
-
170
+
highlightedSegment = segment(at: currentPoint, in: controlView)
171
+
controlView.setNeedsDisplay(controlView.bounds)
165
172
return super.continueTracking(last: lastPoint, current: currentPoint, in: controlView)
166
173
}
167
174
168
175
open override func stopTracking(last lastPoint: NSPoint, current stopPoint: NSPoint, in controlView: NSView, mouseIsUp flag: Bool) {
169
-
savedSelectedSegment = nil
176
+
highlightedSegment = nil
170
177
super.stopTracking(last: lastPoint, current: stopPoint, in: controlView, mouseIsUp: flag)
171
178
}
172
179
}