alex/cacao
1
0
Fork 0
Code Issues Pull requests Packages Projects Releases Wiki Activity

Bump for 0.2.0 release

Browse source
This commit is contained in:
Ryan McGrath 2021-06-09 16:37:51 -07:00
parent 33123c6790
commit 644b1228ee
No known key found for this signature in database
GPG key ID: DA6CBD9233593DEA
2 changed files with 26 additions and 27 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
Cargo.toml
View file

@ -1,13 +1,14 @@
[package] [package]
name = "cacao" name = "cacao"
description = "Rust bindings for AppKit (macOS) and UIKit (iOS/tvOS). Experimental, but working!" description = "Rust bindings for AppKit (macOS, beta) and UIKit (iOS/tvOS, alpha)."
version = "0.1.0" version = "0.2.0"
edition = "2018" edition = "2018"
authors = ["Ryan McGrath <ryan@rymc.io>"] authors = ["Ryan McGrath <ryan@rymc.io>"]
build = "build.rs" build = "build.rs"
repository = "https://github.com/ryanmcgrath/cacao" repository = "https://github.com/ryanmcgrath/cacao"
categories = ["gui", "os::macos-apis", "os::ios-apis"] categories = ["gui", "os::macos-apis", "os::ios-apis"]
keywords = ["gui", "macos", "ios", "appkit", "uikit"] keywords = ["gui", "macos", "ios", "appkit", "uikit"]
license = "MIT OR MPL 2.0"
[package.metadata.docs.rs] [package.metadata.docs.rs]
all-features = true all-features = true

48
README.md
View file

@ -1,19 +1,19 @@
# Cacao # Cacao
This library provides safe Rust bindings for `AppKit` on macOS and (eventually) `UIKit` on iOS. It This library provides safe Rust bindings for `AppKit` on macOS (beta quality, fairly usable) and `UIKit` on iOS/tvOS (alpha quality, see repo).
tries to do so in a way that, if you've done programming for the framework before (in Swift or It tries to do so in a way that, if you've done programming for the framework before (in Swift or
Objective-C), will feel familiar. This is tricky in Rust due to the ownership model, but some Objective-C), will feel familiar. This is tricky in Rust due to the ownership model, but some
creative coding and assumptions can get us pretty far. creative coding and assumptions can get us pretty far.
This library is currently _very_ early stage and may have bugs. Your usage of it is at This library is currently early stages and may have bugs. Your usage of it is at
your own risk. With that said, provided you follow the rules (regarding memory/ownership) it's your own risk. With that said, provided you follow the rules (regarding memory/ownership) it's
already fine for some apps. already fine for some apps. The core repository has a wealth of examples to help you get started.
>_Note that this crate relies on the Objective-C runtime. Interfacing with the runtime **requires** >_Note that this crate relies on the Objective-C runtime. Interfacing with the runtime **requires**
unsafe blocks; this crate handles those unsafe interactions for you and provides a safe wrapper, unsafe blocks; this crate handles those unsafe interactions for you and provides a safe wrapper,
but by using this crate you understand that usage of `unsafe` is a given and will be somewhat but by using this crate you understand that usage of `unsafe` is a given and will be somewhat
rampant for wrapped controls. This does **not** mean you can't assess, review, or question unsafe rampant for wrapped controls. This does **not** mean you can't assess, review, or question unsafe
usage - just know it's happening, and in large part it's not going away. Issues pertaining to the usage - just know it's happening, and in large part it's not going away. Issues pertaining to the mere
existence of unsafe will be closed without comment._ existence of unsafe will be closed without comment._
# Hello World # Hello World
@ -40,7 +40,7 @@ fn main() {
} }
``` ```
For more thorough examples, check the `examples/` folder - for each UI control that's supported there will (ideally) be an example to accompany it. For more thorough examples, check the `examples/` folder.
If you're interested in a more "kitchen sink" example, check out the todos_list with: If you're interested in a more "kitchen sink" example, check out the todos_list with:
@ -55,31 +55,34 @@ ensures the application has had time to initialize and do any housekeeping neces
scenes. scenes.
## Currently Supported ## Currently Supported
In terms of mostly working pieces, the following currently work: In terms of mostly working pieces, the following currently work. This list is not exhaustive and you're encouraged to check out the documentation for more info:
- `App` initialization and event delegation - `App` initialization and event delegation
- `Window` construction, handling, and event delegation - `Window` construction, handling, and event delegation
- `View` construction, basic styling, some event delegation - `View` construction, basic styling, some event delegation
- `ViewController` construction, lifecycle delegation - `ViewController` construction, lifecycle delegation
- `ListView` support, including cell reuse (still needs testing). - `Color`, for handling system-established color types
- `ListView` support, including cell reuse (still needs testing)
- `Button` support, as well as enabling them in Toolbars
- `Label` and `TextField` support for basic text handling.
- `Image`, `ImageView` and `SystemIcon` for image usage. Images can use a custom draw handler, and draw graphics with the [core_graphics]() crate
- `Toolbar` construction and basic API - `Toolbar` construction and basic API
- `SplitViewController` support, including some Big-Sur-only additions
- `WebView` with a basic API for handling callbacks - `WebView` with a basic API for handling callbacks
- `Autolayout` for View layout and such. - `Autolayout` for View layout and such.
There are other components in this repository that exist as testbeds; they'll be added to this list as they reach some level of stability.
## Optional Features ## Optional Features
The following are a list of [Cargo features][cargo-features] that can be enabled or disabled. The following are a list of [Cargo features][cargo-features] that can be enabled or disabled.
- **cloudkit**: Links `CloudKit.framework` and provides some wrappers around CloudKit The following are a list of [Cargo features][cargo-features] that can be enabled or disabled.
functionality. Currently not feature complete.
- **user-notifications**: Links `UserNotifications.framework` and provides functionality for - `cloudkit`: Links `CloudKit.framework` and provides some wrappers around CloudKit functionality. Currently not feature complete.
emitting notifications on macOS and iOS. Note that this _requires_ your application be - `color_fallbacks`: Provides fallback colors for older systems where `systemColor` types don't exist. This feature is very uncommon and you probably don't need it.
code-signed, and will not work without it. - `quicklook`: Links `QuickLook.framework` and offers methods for generating preview images for files.
- **webview**: Links `WebKit.framework` and provides a `WebView` control backed by `WKWebView`. - `user-notifications`: Links `UserNotifications.framework` and provides functionality for emitting notifications on macOS and iOS. Note that this _requires_ your application be code-signed, and will not work without it.
- **webview-downloading**: Enables downloading files from the `WebView` via a private - `webview`: Links `WebKit.framework` and provides a `WebView` control backed by `WKWebView`. This feature is not supported on tvOS, as the platform has no webview control.
interface. This is not an App-Store-safe feature, so be aware of that before enabling. - `webview-downloading-macos`: Enables downloading files from the `WebView` via a private interface. This is not an App-Store-safe feature, so be aware of that before enabling. This feature is not supported on iOS (a user would handle downloads very differently) or tvOS (there's no web browser there at all).
[cargo-features]: https://doc.rust-lang.org/stable/cargo/reference/manifest.html#the-features-section [cargo-features]: https://doc.rust-lang.org/stable/cargo/reference/manifest.html#the-features-section
@ -92,7 +95,7 @@ In _my_ case, I want to be able to write native applications for my devices (and
_(This is the part where the internet lights up and rants about some combination of Electron, Qt, and so on - we're not bothering here as it's beaten to death elsewhere)_ _(This is the part where the internet lights up and rants about some combination of Electron, Qt, and so on - we're not bothering here as it's beaten to death elsewhere)_
You'll like this crate if you like Rust. There is no perfect language, so write in whatever you think is best. This crate is useful for people who don't need to go all-in on the Apple ecosystem, but want to port their work there with some relative ease. It's not expected that everyone will suddenly want to rewrite their macOS/iOS/tvOS apps in Rust.
**Isn't Objective-C dead?** **Isn't Objective-C dead?**
Yes, and no. Yes, and no.
@ -104,7 +107,7 @@ One thing to note is that Apple _has_ started releasing Swift-only frameworks. F
Some might also decry Objective-C as slow. To that, I'd note the following: Some might also decry Objective-C as slow. To that, I'd note the following:
- Your UI engine is probably not the bottleneck. - Your UI engine is probably not the bottleneck.
- Swift is generally better as it fixes a class of bugs that Objective-C doesn't catch; for the most part it still sits on top of the existing Cocoa frameworks anyway. - Swift is generally better as it fixes a class of bugs that Objective-C doesn't catch; for the most part it still sits on top of the existing Cocoa frameworks anyway (though this statement will not age well~).
- Message dispatching in Objective-C is more optimized than significant chunks of the code you'll write, and is fast enough for most things. - Message dispatching in Objective-C is more optimized than significant chunks of the code you'll write, and is fast enough for most things.
**tl;dr** it's probably fine, and you have Rust for your performance needs. **tl;dr** it's probably fine, and you have Rust for your performance needs.
@ -118,11 +121,6 @@ Correct! Each UI control contains a `objc` field, which you can use as an escape
**Why don't you use bindings to automatically generate this stuff?** **Why don't you use bindings to automatically generate this stuff?**
For initial exploration purposes I've done most of this by hand, as I wanted to find an approach that fit well in the Rust model before committing to binding generation. This is something I'll likely focus on next now that I've got things "working" well enough. For initial exploration purposes I've done most of this by hand, as I wanted to find an approach that fit well in the Rust model before committing to binding generation. This is something I'll likely focus on next now that I've got things "working" well enough.
**Can I use this now?**
For now, you can clone this repository and link it into your `Cargo.toml` by path. I'm squatting the names on `crates.io`, as I (in time) will throw this up there, but only when it's at a point where there's reasonable expectation that things won't be changing around much.
If you're interested in seeing this in use in a shipping app, head on over to [subatomic](https://github.com/ryanmcgrath/subatomic/).
**Is this related to Cacao, the Swift project?** **Is this related to Cacao, the Swift project?**
No. The project referred to in this question aimed to map portions of Cocoa and UIKit over to run on Linux, but hasn't seen activity in some time (it was really cool, too!). No. The project referred to in this question aimed to map portions of Cocoa and UIKit over to run on Linux, but hasn't seen activity in some time (it was really cool, too!).