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preview.go
29 lines (26 loc) · 633 Bytes
/
preview.go
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package caire
import (
"os"
)
// showPreview spawns a new Gio GUI window and updates its content with the resized image received from a channel.
func (p *Processor) showPreview(
imgWorker <-chan worker,
errChan chan<- error,
guiParams struct {
width int
height int
},
) {
var gui = NewGUI(guiParams.width, guiParams.height)
gui.cp = p
gui.proc.wrk = imgWorker
// Run the Gio GUI app in a separate goroutine
go func() {
if err := gui.Run(); err != nil {
errChan <- err
}
// It's important to call os.Exit(0) in order to terminate
// the execution of the GUI app when pressing ESC key.
os.Exit(0)
}()
}