stone/examples/draw/main.go

59 lines
1.3 KiB
Go

package main
import "os"
import "image"
import _ "image/png"
import "git.tebibyte.media/sashakoshka/stone"
import _ "git.tebibyte.media/sashakoshka/stone/backends/x"
var application = &stone.Application { }
var mousePressed bool
func main () {
application.SetTitle("drawing canvas")
application.SetSize(32, 16)
iconFile16, err := os.Open("assets/scaffold16.png")
if err != nil { panic(err) }
icon16, _, err := image.Decode(iconFile16)
if err != nil { panic(err) }
iconFile16.Close()
iconFile32, err := os.Open("assets/scaffold32.png")
if err != nil { panic(err) }
icon32, _, err := image.Decode(iconFile32)
if err != nil { panic(err) }
iconFile16.Close()
application.SetIcon([]image.Image { icon16, icon32 })
application.OnPress(onPress)
application.OnRelease(onRelease)
application.OnMouseMove(onMouseMove)
err = application.Run()
if err != nil { panic(err) }
}
func onPress (button stone.Button, modifiers stone.Modifiers) {
if button == stone.MouseButtonLeft {
mousePressed = true
application.SetRune(0, 0, '+')
application.Draw()
}
}
func onRelease (button stone.Button) {
if button == stone.MouseButtonLeft {
mousePressed = false
application.SetRune(0, 0, 0)
application.Draw()
}
}
func onMouseMove (x, y int) {
if mousePressed {
application.SetRune(x, y, '#')
application.Draw()
}
}