4.4 KiB
gui
Package gui implements a abstraction layer for Go visual elements.
Definitions:
* Toolkit: the underlying GUI library (MacOS gui, Windows gui, gtk, qt, etc)
* Node: A binary tree of all the underlying widgets
Principles:
* Make code using this package simple to use
* Hide complexity internally here
* Isolate the GUI toolkit
* Widget names should try to match [Wikipedia Graphical widget]
* When in doubt, search upward in the binary tree
* It's ok to guess. Try to do something sensible.
Quick Start
// This creates a simple hello world window
package main
import (
"log"
"git.wit.org/wit/gui"
)
var window *gui.Node // This is the beginning of the binary tree of widgets
// go will sit here until the window exits
func main() {
gui.Init()
gui.Main(helloworld)
}
// This initializes the first window and 2 tabs
func helloworld() {
gui.Config.Title = "Hello World golang wit/gui Window"
gui.Config.Width = 640
gui.Config.Height = 480
window := gui.NewWindow()
addTab(window, "A Simple Tab Demo")
addTab(window, "A Second Tab")
}
func addTab(w *gui.Node, title string) {
tab := w.NewTab(title)
group := tab.NewGroup("foo bar")
group.NewButton("hello", func() {
log.Println("world")
})
}
Debian Build
This worked on debian sid on 2022/10/20 I didn't record the dependances needed
GO111MODULE="off" go get -v -t -u git.wit.org/wit/gui
cd ~/go/src/git.wit.org/wit/gui/cmds/helloworld/
GO111MODULE="off" go build -v -x
[./helloworld](./helloworld)
Toolkits
* andlabs - [https://github.com/andlabs/ui](https://github.com/andlabs/ui)
* gocui - [https://github.com/awesome-gocui/gocui](https://github.com/awesome-gocui/gocui)
The next step is to allow this to work against go-gtk and go-qt.
TODO: Add Fyne, WASM, native macos & windows, android and hopefully also things like libSDL, faiface/pixel, slint
Bugs
"The author's idea of friendly may differ to that of many other people."
-- quote from the minimalistic window manager 'evilwm'
References
Useful links and other external things which might be useful
* [Wikipedia Graphical widget]
* [Github mirror]
* [Federated git pull]
* [GO Style Guide]
Functions
func DebugWidgetWindow
func DebugWidgetWindow(w *Node)
func DebugWindow
func DebugWindow()
Creates a window helpful for debugging this package
func ExampleCatcher
func ExampleCatcher(f func())
func Indent
func Indent(b bool, a ...interface{})
func SetDebug
func SetDebug(s bool)
func SetFlag
func SetFlag(s string, b bool)
func ShowDebugValues
func ShowDebugValues()
func StandardExit
func StandardExit()
The window is destroyed and the application exits TODO: properly exit the plugin since Quit() doesn't do it
func Watchdog
func Watchdog()
This program sits here. If you exit here, the whole thing will os.Exit()
This goroutine can be used like a watchdog timer
Types
type GuiArgs
type GuiArgs struct { ... }
This struct can be used with the go-arg package
type GuiConfig
type GuiConfig struct { ... }
Variables
var Config GuiConfig
type Node
type Node struct { ... }
The Node is a binary tree. This is how all GUI elements are stored simply the name and the size of whatever GUI element exists
func New
func New() *Node
There should only be one of these per application This is due to restrictions by being cross platform some toolkit's on some operating systems don't support more than one Keep things simple. Do the default expected thing whenever possible
type Symbol
type Symbol any
Sub Packages
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