crowngui 
Web Technologies based Crossplatform GUI Framework
It uses Cocoa/WebKit on macOS, gtk-webkit2 on Linux and webview2 on Windows
crowngui contains managed code only, no native code.
crowngui uses nimpacker for bundling application easier.
Architecture
how bindProcs works?
figure generated via asciiflow
┌─────────────┐ ┌──────────────────────────────┐ ┌─────────────────────────┐
│ │ │ │ │ │
│ │ │store hook function in `eps` │ │when trigger js function │
│ │ │hook accept one string param │ │internally it use browser│
│ bindProcs ├────────►│and returns string that wraps ├──────►│`postMessage` api send │
│ │ │nim proc call. │ │json string with scope, │
│ │ │And generate js function and │ │name, argument. │
│ │ │dispatch to main queue. │ │ │
└─────────────┘ └──────────────────────────────┘ └────────────┬────────────┘
│
▼
┌────────────────────────────────────────────────────┐
│browser add callback when received message │
│it calls Webview's `invokeCb` which implements │
│as `generalExternalInvokeCallback` │
│it parse argument as json retrieve scope, │
│name, argument,then call the hook stored. │
│ │
└────────────────────────────────────────────────────┘
Usage
file: yourexecutable.nim
import crowngui
when isMainModule:
const
cssDark = staticRead"assets/dark.css".strip.unindent.cstring
cssLight = staticRead"assets/light.css".strip.unindent.cstring
let app = newApplication( staticRead("assets/demo.html") )
let theme = if "--light-theme" in commandLineParams(): cssLight else: cssDark
app.css(theme)
app.run()
app.exit()Your project .nimble file
bin = @["yourexecutable"]nimpacker will bundle your executable to exe on windows, .app on mac
Your project root can have "logo.png" which will generate as icon of application.
CLI usage
nimpacker [build,run] --help
Usage:
[build,run] [required&optional-params] [flags: string...]
Options:
-h, --help print this cligen-erated help
--help-syntax advanced: prepend,plurals,..
-t=, --target= string REQUIRED set target
-r, --release bool false set release
Examples
crown_excel excel viewer
gamode windows optimization tool for game
Development
run
nimpacker run --target macos
build
nimpacker build --target macos
Cross compilation for Windows
To cross compile for Windows from Linux or macOS using the MinGW-w64 toolchain:
nim c -d:mingw myproject.nim
Use --cpu:i386 or --cpu:amd64 to switch the CPU architecture.
The MinGW-w64 toolchain can be installed as follows:
Ubuntu: apt install mingw-w64
CentOS: yum install mingw32-gcc | mingw64-gcc - requires EPEL
OSX: brew install mingw-w64