最近想再搞一下图像处理相关的东西，老是找不到好用的UI库，最后找到了这个，找了两个小时

go
package main

import (
	"image"
	"log"
	"os"

	"gioui.org/app"
	"gioui.org/op"
	"gioui.org/op/paint"
	"gioui.org/unit"
)

func main() {
	go func() {
		file, err := os.Open("./min.jpg")
		if err != nil {
			log.Fatal(err)
		}
		img, _, err := image.Decode(file)
		if err != nil {
			log.Fatal(err)
		}

		bounds := img.Bounds()
		width := float32(bounds.Dx())
		height := float32(bounds.Dy())
		window := new(app.Window)
		window.Option(app.Title("Image Viewer"))
		window.Option(app.Size(unit.Dp(height), unit.Dp(width)))
		err = run(window, img)
		if err != nil {
			log.Fatal(err)
		}
		os.Exit(0)
	}()
	app.Main()
}

func run(window *app.Window, img image.Image) error {
	// theme := material.NewTheme()
	var ops op.Ops

	for {
		switch e := window.Event().(type) {
		case app.DestroyEvent:
			return e.Err
		case app.FrameEvent:
			// This graphics context is used for managing the rendering state.
			gtx := app.NewContext(&ops, e)

			imageOp := paint.NewImageOp(img)

			imageOp.Add(gtx.Ops)
			paint.PaintOp{}.Add(gtx.Ops)

			// Define an large label with an appropriate text:
			//title := material.H1(theme, "Hello, Gio")

			// Change the color of the label.

			// Pass the drawing operations to the GPU.
			e.Frame(gtx.Ops)
		}
	}
}

但也确实好看

就是反应有点慢