[macos][swift4] DisplayMode switcher on StatusBar

DisplayModeSwitcher.swift

#!/usr/bin/env swift
// DisplayMode switcher on StatrusBar (for swift4)
// $ swiftc DisplayModeSwitcher.swift
import Cocoa

let monoText = NSFont.monospacedDigitSystemFont(ofSize: NSFont.systemFontSize, weight: .regular)
let attrsT: [NSAttributedString.Key: Any] = [.font: monoText]
let attrsS: [NSAttributedString.Key: Any] = [.font: monoText, .expansion: 0.8]
func resolution(_ id: String, _ w: String, _ h: String, _ mark: String) -> NSAttributedString {
    let parts = [(String(repeating: " ", count: 3 - id.count), attrsS), ("\(id): ", attrsT),
                 (String(repeating: " ", count: 5 - w.count), attrsS), ("\(w) x \(h)", attrsT),
                 (String(repeating: " ", count: 5 - h.count), attrsS), (mark, attrsT)]
    let title = NSMutableAttributedString()
    for (text, attrs) in parts {title.append(NSAttributedString(string: text, attributes: attrs))}
    return title
}

class Main: NSObject, NSMenuDelegate {
    func menuWillOpen(_ menu: NSMenu) {
        menu.removeAllItems()
        let display = CGMainDisplayID()
        let modes = CGDisplayCopyAllDisplayModes(display, nil)
        guard let dmodes = modes as? [CGDisplayMode] else {return}
        if let current = CGDisplayCopyDisplayMode(display) {
            let now = NSMenuItem()
            now.attributedTitle = resolution("Now", "\(current.width)", "\(current.height)", "")
            menu.addItem(now)
            menu.addItem(NSMenuItem.separator())
            let items = dmodes.enumerated().map {(i, dmode) -> NSMenuItem in
                let mi = NSMenuItem()
                let mark = dmode.ioDisplayModeID == current.ioDisplayModeID ? "\u{2713}" : ""
                mi.attributedTitle = resolution("\(i)", "\(dmode.width)", "\(dmode.height)", mark)
                mi.action = #selector(self.switchMode)
                mi.target = self
                mi.tag = i
                return mi
            }
            for item in items {menu.addItem(item)}
        }
        menu.addItem(NSMenuItem.separator())
        let terminate = #selector(NSApplication.shared.terminate)
        menu.addItem(withTitle: "Quit", action: terminate, keyEquivalent: "")
    }

    @objc func switchMode(_ sender: NSMenuItem) {
        let display = CGMainDisplayID()
        let modes = CGDisplayCopyAllDisplayModes(display, nil)
        guard let dmodes = modes as? [CGDisplayMode] else {return}
        let config = UnsafeMutablePointer<CGDisplayConfigRef?>.allocate(capacity: 1)
        defer {config.deallocate()}
        CGBeginDisplayConfiguration(config)
        CGConfigureDisplayWithDisplayMode(config.pointee, display, dmodes[sender.tag], nil)
        CGCompleteDisplayConfiguration(config.pointee, CGConfigureOption.permanently)
    }
}
let main = Main()

NSApplication.loadApplication()
let menu = NSMenu()
menu.delegate = main
let statusItem = NSStatusBar.system.statusItem(withLength: -1)
//statusItem.button?.title = "\u{1F5A5}"
statusItem.button?.title = "\u{1F4BB}"
statusItem.menu = menu
NSApplication.shared.run()

icon.svg

Info.plist.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
  <key>CFBundleInfoDictionaryVersion</key>
  <string>6.0</string>
  <key>CFBundlePackageType</key>
  <string>APPL</string>
  <key>CFBundleDevelopmentRegion</key>
  <string>en</string>
  <key>CFBundleExecutable</key>
  <string>%name%</string>
  <key>CFBundleIdentifier</key>
  <string>%id%</string>
  <key>CFBundleIconFile</key>
  <string>%name%.icns</string>
  <key>CFBundleName</key>
  <string>%name%</string>
  <key>CFBundleShortVersionString</key>
  <string>1.0</string>
  <key>CFBundleVersion</key>
  <string>1</string>
  <key>LSUIElement</key>
  <true/>
</dict>
</plist>

makeappbundle.sh

#!/bin/bash

if [ "$(which convert)" == "" ] ; then
    echo "[Abort] Please install imagemagick"
    exit 1
fi

namespace=bellbind
name=DisplayModeSwitcher
svg=icon.svg
id="$namespace.$name"

#NOTE: Prepare your certificate in "Keychain Access"
#cert=bellbind

# build bin
cd $(dirname $0)
swiftopts=""
swiftc $swiftopts "$name.swift"

# build icns from svg
iconset="$name.iconset"
png="$svg.png"
opts="-fuzz 15% -transparent white"
mkdir -p "$iconset"
qlmanage -t -s 1024 -o . "$svg"
convert "$png" $opts -resize 16x16 "$iconset/icon_16x16.png"
convert "$png" $opts -resize 32x32 "$iconset/icon_16x16@2x.png"
convert "$png" $opts -resize 32x32 "$iconset/icon_32x32.png"
convert "$png" $opts -resize 64x64 "$iconset/icon_32x32@2x.png"
convert "$png" $opts -resize 128x128 "$iconset/icon_128x128.png"
convert "$png" $opts -resize 256x256 "$iconset/icon_128x128@2x.png"
convert "$png" $opts -resize 256x256 "$iconset/icon_256x256.png"
convert "$png" $opts -resize 512x512 "$iconset/icon_256x256@2x.png"
convert "$png" $opts -resize 512x512 "$iconset/icon_512x512.png"
convert "$png" $opts -resize 1024x1024 "$iconset/icon_512x512@2x.png"
iconutil -c icns "$iconset"

# build app bundle
app="$name.app"
mkdir -p "$app/Contents/MacOS"
mkdir -p "$app/Contents/Resources"
sed -e "s/%name%/$name/g;s/%id%/$id/g" Info.plist.xml > "$app/Contents/Info.plist"
cp "$name" "$app/Contents/MacOS"
cp "$name.icns" "$app/Contents/Resources"

# cleanup
rm -r "$name.iconset"
rm "$name" "$name.icns" "$png"

# codesign
if [ "$cert" ] ; then
    codesign -s "$cert" "$app"
fi

# make dmg
mkdir -p dmg/
cp -a "$app" dmg/
( cd dmg ; ln -s /Applications/ )
hdiutil create -srcfolder dmg -volname "$name" "$name.dmg"
rm -rf dmg/

CLI command version: https://gist.github.com/bellbind/27220148ea752335259dfce63f43bd5d

Hidden CoreGraphics API version: https://gist.github.com/bellbind/0cbd295130e4e1dc4459925e81048cf1

moved to https://github.com/bellbind/DisplayModeSwitcher