Start reworking keyboard input and no longer trap signals for controls

cmd/ui/ui.go

@@ -1,14 +1,14 @@
 package main
 
 import (
+	"fmt"
 	"io"
 	"log"
-	"os"
 	"os/exec"
-	"os/signal"
-	"syscall"
 	"time"
 
+	"github.com/eiannone/keyboard"
+
 	"github.com/gdamore/tcell"
 	"github.com/rivo/tview"
 )
@@ -19,22 +19,34 @@ const (
 )
 
 func main() {
-	// fim placeholder so we can operate on it when a signal is received
+	// fim placeholder so we can operate on it when a exit slideshow is received
 	var fim *exec.Cmd = nil
 
-	// Setup signal listening
-	sigs := make(chan os.Signal)
-	signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
-	defer func() { close(sigs) }()
+	// Start watching for key strokes and echo them back to stdout
+	keysEvents, err := keyboard.GetKeys(10)
+	if err != nil {
+		panic(err)
+	}
+	defer func() {
+		_ = keyboard.Close()
+	}()
 
-	// Goroutine to handle os signals (nuke fim so we can get to config ui)
+	fmt.Println("Press ESC to kill slideshow")
 	go func() {
-		for range sigs {
-			if fim != nil { // Just in case someone lays on ctrl-c or similar during startup
+		for {
+			event := <-keysEvents
+			if event.Err != nil {
+				panic(event.Err)
+			}
+			fmt.Printf("You pressed: rune %q, key %X\r\n", event.Rune, event.Key)
+			if event.Key == keyboard.KeyEsc {
+				if fim != nil { // Just in case someone lays on exit key or similar during startup
 					if err := fim.Process.Kill(); err != nil {
 						log.Fatalf("failed to kill fim : %s", err)
 					}
 				}
+				break
+			}
 		}
 	}()