/
app.go
75 lines (62 loc) · 1.51 KB
/
app.go
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package app
import (
"context"
"image"
"os"
"time"
"github.com/hajimehoshi/ebiten/v2"
"github.com/hajimehoshi/ebiten/v2/ebitenutil"
"github.com/xuender/kit/cache"
"github.com/xuender/kit/oss"
"github.com/xuender/kit/types"
"gonum.org/v1/plot/vg/draw"
"gonum.org/v1/plot/vg/vgimg"
)
const _key = "image"
type App struct {
cancel context.CancelFunc
cache *cache.Cache[string, *ebiten.Image]
plot *Plot
process *Process
}
func NewApp(
process *Process,
plot *Plot,
) *App {
ebiten.SetWindowTitle("Monitor")
ebiten.SetWindowClosingHandled(true)
ctx, cancel := oss.CancelContext(context.Background())
go process.Run(ctx)
// nolint: gomnd
return &App{
cancel: cancel,
cache: cache.NewStringKey[*ebiten.Image](time.Millisecond*100, time.Second),
plot: plot,
process: process,
}
}
func (p *App) Draw(screen *ebiten.Image) {
eimg, has := p.cache.GetNoExtension(_key)
if !has {
procs := p.process.Procs
if len(procs) == 0 {
return
}
img := image.NewRGBA(image.Rect(0, 0, _width, _height))
canvas := vgimg.NewWith(vgimg.UseImage(img))
p.plot.CPU(draw.New(canvas), procs)
eimg = ebiten.NewImageFromImage(canvas.Image())
p.cache.Set(_key, eimg)
}
screen.DrawImage(eimg, &ebiten.DrawImageOptions{})
ebitenutil.DebugPrint(screen, types.Itoa(ebiten.ActualFPS()))
}
func (p *App) Update() error {
if ebiten.IsWindowBeingClosed() {
p.cancel()
ebiten.SetWindowClosingHandled(false)
os.Exit(0)
}
return nil
}
func (p *App) Layout(_, _ int) (int, int) { return _width, _height }