Swiftpack.co - UnGast/SkiaKit as Swift Package

Swiftpack.co is a collection of thousands of indexed Swift packages. Search packages.
UnGast/SkiaKit
Swift Bindings to the Skia 2D graphics Library
.package(url: "https://github.com/UnGast/SkiaKit.git", from: "0.0.1")

SkiaKit

originally forked from migueldeicaza/SkiaKit


Installation

SkiaKit is a wrapper library which maps Skia's C++ API to Swift via an intermediate C API.

SkiaKit does not contain the actual Skia code. Instead it is linked to a prebuilt binary. You have to obtain this binary and place it somewhere the linker can find it (usually a system directory like /usr/lib).
This is hopefully only a temporary requirement. When the Swift Package Manager supports shipping binaries with packages on all all platforms, manually installing Skia will not be necessary.


1. Obtaining a Skia binary

Option 1: Using the download script

The easiest way to obtain a binary is by using the automatic download and installation script at tools/install_skia.sh.

Execute these lines in your terminal to run the script with correct parameters:

SKIAKIT_VERSION=<insert the exact version of SkiaKit package, e.g. 0.0.1>
SKIAKIT_PLATFORM=<insert your platform, allowed values: linux, macos>
curl -L https://raw.githubusercontent.com/UnGast/SkiaKit/main/tools/install_skia.sh --output install_skia.sh && chmod +x install_skia.sh && sudo ./install_skia.sh $SKIAKIT_PLATFORM $SKIAKIT_VERSION
rm install_skia.sh

Option 2: Manually downloading a prebuilt binary

You might find a binary for your platform at: releases (look in assets section).

If you found a prebuilt binary for your platform, continue with step 2.


Option 3: Compile it yourself

I cannot provide a prebuilt version for every possible platform. So you might have to compile Skia yourself, which is not too hard.
Read the tutorial on skia.org and build this exact commit of a modified Skia version:

https://github.com/UnGast/skia/tree/d22bd8f1c52c3181e63561f88dfbe4cb4d891d66

I use the following build arguments, you might have to adjust them for your platform.

Note that Python 2 is required to build Skia.


GN build args on Ubuntu:

is_official_build = true
target_os = "linux"
target_cpu = "x64"
skia_use_piex = false
skia_enable_tools = false
skia_use_harfbuzz=false
skia_use_system_expat = false
skia_use_system_freetype2 = true
skia_use_system_libjpeg_turbo = false
skia_use_system_libpng = false
skia_use_system_libwebp = false
skia_use_vulkan = true

extra_cflags = [ "-DHAVE_GETRANDOM" ]

GN build args on MacOS:

is_debug=false
is_official_build=true
skia_use_system_expat=false
skia_use_system_icu=false
skia_use_system_libjpeg_turbo=false 
skia_use_system_libpng=false
skia_use_system_libwebp=false
skia_use_system_zlib=false
skia_use_sfntly=false
skia_use_freetype=true
skia_use_harfbuzz=false
skia_pdf_subset_harfbuzz=false
skia_use_system_freetype2=false
skia_use_system_harfbuzz=false
target_cpu="x64"
extra_cflags=["-DHAVE_GETRANDOM", "-DHAVE_XLOCALE_H"]
extra_cflags_cc=["-frtti"]

GN build args on Windows:

is_official_build = true
clang_win = "C:\Program Files\LLVM" # depends on where you have LLVM installed
extra_cflags = ["/MD"] # link the C runtime dynamically instead of statically, otherwise won't work when linked with swift modules

target_os = "win"
target_cpu = "x64"

skia_use_system_expat=false
skia_use_system_libjpeg_turbo=false
skia_use_system_libpng=false
skia_use_system_libwebp=false
skia_use_system_zlib=false
skia_use_system_icu=false
skia_use_harfbuzz=false

skia_use_vulkan = true

2. Making the binary visible to the linker

Ensure that your binary is named libskia_skiakit.a, if it is not, simply rename it. Then place your binary in /usr/lib. This will require root priviliges.

Now you should be able to use this package like a normal Swift package.



originally forked from migueldeicaza/SkiaKit

This work uses extensive code from Microsoft's SkiaSharp bindings authoered by Matthew Leibowitz and dozens of contributors. SkiaSharp just happens to have a very advanced set of bridge APIs to the underlying Skia engine that do not exist in the upstream Google Skia project.

GitHub

link
Stars: 0
Last commit: 1 week ago

Ad: Job Offers

iOS Software Engineer @ Perry Street Software
Perry Street Software is Jack’d and SCRUFF. We are two of the world’s largest gay, bi, trans and queer social dating apps on iOS and Android. Our brands reach more than 20 million members worldwide so members can connect, meet and express themselves on a platform that prioritizes privacy and security. We invest heavily into SwiftUI and using Swift Packages to modularize the codebase.

Submit a free job ad (while I'm testing this). The analytics numbers for this website are here.

Release Notes

Initial
12 weeks ago

To use the prebuilt binary, rename it to libskia_skiakit.a and place it in /usr/lib.

Swiftpack is being maintained by Petr Pavlik | @ptrpavlik | @swiftpackco | API | Analytics