mmacierzanka/second-display
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Style the DMG: dmgbuild layout, background, large icons

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Layout is written by dmgbuild (Config/dmg/settings.py) instead of Finder
AppleScript, which proved unreliable. Background is generated by
scripts/make-dmg-background.swift.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
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mmacierzankaandClaude Bot committed 2026-11-03 03:42:15 +01:00
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@@ -29,7 +29,7 @@ On first launch macOS asks for camera and microphone access — allow both. You
If you received a prebuilt copy (the `.dmg`), drag the app to Applications. It is not notarized, so macOS blocks it on first launch: allow it once in System Settings → Privacy & Security → "Open Anyway", or run `xattr -dr com.apple.quarantine /Applications/SecondDisplay.app`. The same steps are in `Read Me First.txt` inside the disk image.
## Releasing a DMG
`make dmg` builds a universal (arm64 + x86_64) app and packs it with an `Applications` shortcut and `Read Me First.txt` (source: `Config/dmg/`). The disk image is not signed with a Developer ID or notarized; the instructions in it explain how recipients allow it. Bump the version in `Config/Info.plist` before releasing and tag it (`git tag -a vX.Y.Z -m vX.Y.Z`).
`make dmg` builds a universal (arm64 + x86_64) app and packs it with an `Applications` shortcut and `Read Me First.txt` (source: `Config/dmg/`) in a styled Finder window: large icons and a background with an arrow (`Config/dmg/background.png`, generated by `scripts/make-dmg-background.swift`). The layout is written directly into the image by [dmgbuild](https://github.com/dmgbuild/dmgbuild) (settings in `Config/dmg/settings.py`), so no Finder automation is needed. The first `make dmg` installs it into `build/venv` (needs `python3` and network access). The disk image is not signed with a Developer ID or notarized; the instructions in it explain how recipients allow it. Bump the version in `Config/Info.plist` before releasing and tag it (`git tag -a vX.Y.Z -m vX.Y.Z`).
## Usage
Menus at the top of the screen: **Video** (device, format), **Audio** (source or off), **Options** (prevent display sleep, start in full screen, always on top, mute ⇧⌘M, scaling), **Window** (tiling, full screen ⌃⌘F).