Ecosyste.ms: Awesome

An open API service indexing awesome lists of open source software.

Awesome Lists | Featured Topics | Projects

https://github.com/sh1l0n/swift-linux-calculator

Simple calculator coded in Swift for Linux
https://github.com/sh1l0n/swift-linux-calculator

Last synced: 22 days ago
JSON representation

Simple calculator coded in Swift for Linux

Awesome Lists containing this project

README 

        
# SwiftCalculatorGtk

A simple 'calculator' app showing how to do customize widgets and manage a Grid using SwiftGTK https://github.com/rhx/SwiftGtk



 






## Building

Make sure you have all the prerequisites installed (see below).  After that, you can simply clone this repository and build the command line executable (be patient, this will download all the required dependencies and take a while to compile) using



	git clone https://github.com/sh1l0n/swift-linux-calculator.git

	cd swift-swift-linux-calculator

	./build.sh

	

After that, you can run the program using



	.build/debug/Calculator



A simple, calculator window should appear.  To exit the program, click the close button or press Control-C in the Terminal window.



### Xcode



On macOS, you can build the project using Xcode instead.  To do this, you need to create an Xcode project first, then open the project in the Xcode IDE:



	./xcodegen.sh

	open Calculator.xcodeproj



After that, select the executable target (not the Bundle/Framework target with the same name as the executable) and use the (usual) Build and Run buttons to build/run your project.



## What is new?



Version 11 introduces a new type system into `gir2swift`,

to ensure it has a representation of the underlying types.

This is necessary for Swift 5.3 onwards, which requires more stringent casts.

As a consequence, accessors can accept and return idiomatic Swift rather than

underlying types or pointers.

This means that a lot of the changes will be source-breaking for code that

was compiled against libraries built with earlier versions of `gir2swift`.



### Notable changes



 * Requires Swift 5.2 or later

 * Wrapper code is now `@inlinable` to enable the compiler to optimise away most of the wrappers

 * Parameters and return types use more idiomatic Swift (e.g. `Ref` wrappers instead of pointers, `Int` instead of `gint`, etc.)

 * Functions that take or return records now are templated instead of using the type-erased Protocol

 * `ErrorType` has been renamed `GLibError` to ensure it neither clashes with `Swift.Error` nor the `GLib.ErrorType`  scanner enum

 * Parameters or return types for records/classes now use the corresponding, lightweight Swift `Ref` wrapper instead of the underlying pointer



## Prerequisites



### Swift



To build, you need at least Swift 5.2 (Swift 5.3+ should work fine), download from https://swift.org/download/ -- if you are using macOS, make sure you have the command line tools installed as well).  Test that your compiler works using `swift --version`, which should give you something like



	$ swift --version

	Apple Swift version 5.2.4 (swiftlang-1100.0.282.1 clang-1100.0.33.15)

	Target: x86_64-apple-darwin19.4.0



on macOS, or on Linux you should get something like:



	$ swift --version

	Swift version 5.2.5 (swift-5.2.5-RELEASE)

	Target: x86_64-unknown-linux-gnu



### Gtk 3.18 or higher



The Swift wrappers have been tested with glib-2.46, 2.48, 2.52, 2.56, 2.58, 2.60, 2.62, and 2.64, and gdk/gtk 3.18, 3.20, 3.22, and 3.24.  They should work with higher versions, but YMMV.  Also make sure you have `gobject-introspection` and its `.gir` files installed.



#### Linux



##### Ubuntu



On Ubuntu 18.04 and 16.04 you can use the gtk that comes with the distribution.  Just install with the `apt` package manager:



	sudo apt update

	sudo apt install libgtk-3-dev gir1.2-gtksource-3.0 gobject-introspection libgirepository1.0-dev libxml2-dev



If you prefer a newer version of gtk, you can also install it from the GNOME 3 Staging PPA (see https://launchpad.net/~gnome3-team/+archive/ubuntu/gnome3-staging), but be aware that this can be a bit dangerous (as this removes packages that can be vital, particularly if you use a GNOME-based desktop), so only do this if you know what you are doing:



	sudo add-apt-repository ppa:gnome3-team/gnome3-staging

	sudo apt update

	sudo apt dist-upgrade

	sudo apt install libgtk-3-dev gir1.2-gtksource-3.0 gobject-introspection libgirepository1.0-dev libxml2-dev



##### Fedora



On Fedora 29, you can use the gtk that comes with the distribution.  Just install with the `dnf` package manager:



	sudo dnf install gtk3-devel pango-devel cairo-devel cairo-gobject-devel glib2-devel gobject-introspection-devel libxml2-devel



#### macOS



On macOS, you can install gtk using HomeBrew (for setup instructions, see http://brew.sh).  Once you have a running HomeBrew installation, you can use it to install a native version of gtk:



	brew update

	brew install gtk+3 glib glib-networking gobject-introspection pkg-config



## Troubleshooting

Here are some common errors you might encounter and how to fix them.



### Old Swift toolchain or Xcode

If you get an error such as



	$ ./build.sh 

	error: unable to invoke subcommand: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-package (No such file or directory)

	

this probably means that your Swift toolchain is too old.  Make sure the latest toolchain is the one that is found when you run the Swift compiler (see above).



  If you get an older version, make sure that the right version of the swift compiler is found first in your `PATH`.  On macOS, use xcode-select to select and install the latest version, e.g.:



	sudo xcode-select -s /Applications/Xcode.app

	xcode-select --install