// Passthrough to termbox using termbox constants above
func SetOutputMode(mode OutputMode) {
switch mode {
case OutputCurrent:
tm.SetOutputMode(tm.OutputCurrent)
case OutputNormal:
tm.SetOutputMode(tm.OutputNormal)
case Output256:
tm.SetOutputMode(tm.Output256)
case Output216:
tm.SetOutputMode(tm.Output216)
case OutputGrayscale:
tm.SetOutputMode(tm.OutputGrayscale)
}
}
func main() {
fname := os.Args[1]
f, err := os.Open(fname)
if err != nil {
log.Fatal(err)
}
defer f.Close()
img, _, err := image.Decode(f)
if err != nil {
log.Fatal(err)
}
err = termbox.Init()
if err != nil {
panic(err)
}
defer termbox.Close()
if termbox.SetOutputMode(termbox.Output256) == termbox.Output256 {
palette = upgrade(palette)
}
lw, lh := termbox.Size()
draw(img)
loop:
for {
ev := termbox.PollEvent()
switch ev.Type {
case termbox.EventKey:
if ev.Key == termbox.KeyEsc {
break loop
}
case termbox.EventResize:
termbox.Flush()
if w, h := termbox.Size(); lw != w || lh != h {
lw, lh = w, h
draw(img)
}
}
}
}