resizing image on thread instead of ui thread

pull/3/head
nathan 1 year ago
parent 631e5711d1
commit 9dbcc756d4

@ -39,6 +39,7 @@ type Animation struct {
updown int
mqmsg chan mqtt.Message
msg string
countDown int
}
@ -140,6 +141,12 @@ func NewAnimation(sz image.Point, mqMessages chan mqtt.Message) *Animation {
}
}
func appendImage(img string, a *Animation) {
baseImage, _ := b64.StdEncoding.DecodeString(img)
bigImage, _, _ := image.Decode(bytes.NewReader(baseImage))
a.image = append(a.image, imaging.Resize(bigImage, 32, 32, imaging.Lanczos))
}
// what happens each frame, at an interval of 50 milliseconds
func (a *Animation) Next() (image.Image, <-chan time.Time, error) {
incoming := incomingImage{}
@ -168,10 +175,7 @@ func (a *Animation) Next() (image.Image, <-chan time.Time, error) {
a.msg = string(msg.Payload())
a.ctx.DrawString(a.msg, 5, 9)
} else {
baseImage, _ := b64.StdEncoding.DecodeString(incoming.Image)
bigImage, _, _ := image.Decode(bytes.NewReader(baseImage))
a.image = append(a.image, imaging.Resize(bigImage, 32, 32, imaging.Lanczos))
a.ctx.DrawImageAnchored(a.image[2], 0, 0, 0, 0)
go appendImage(incoming.Image, a)
}
default:
}

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