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package main
import (
"image"
"image/color"
"image/draw"
"github.com/faiface/gui"
"github.com/faiface/gui/layout"
"github.com/faiface/gui/win"
"github.com/faiface/mainthread"
)
const (
nrows = 16
rowHeight = 12
rowWidth = 128
)
var bgclr = gui.HexToColor("#ffffea") // background color
func main() {
mainthread.Run(run)
}
func run() {
w, err := win.New(win.Title("Grid Layout Test"), win.Resizable())
if err != nil {
panic(err)
}
mux, env := gui.NewMux(w)
bg := layout.NewRegion(mux.MakeEnv(), bgclr, layout.ResizeAll)
rows := layout.NewRows(bg, nrows)
for i, row := range rows {
go colorBlock(row, image.Pt(rowWidth, rowHeight), color.RGBA{uint8(i * 256 / 4), 0x20, 0x20, 0xFF})
}
for event := range env.Events() {
switch event.(type) {
case win.WiClose:
close(env.Draw())
return
}
}
}
func colorBlock(env gui.Env, size image.Point, c color.Color) {
redraw := func(img draw.Image) image.Rectangle {
r := image.Rectangle{img.Bounds().Min, img.Bounds().Min.Add(size)}
draw.Draw(img, r, &image.Uniform{c}, image.ZP, draw.Src)
return r
}
for event := range env.Events() {
switch event.(type) {
case gui.Resize:
env.Draw() <- redraw
}
}
close(env.Draw())
}
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