init

main.go

@@ -0,0 +1,78 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"os/exec"
+
+	"go.i3wm.org/i3"
+	"gopkg.in/yaml.v3"
+)
+
+type Config struct {
+	Default    string            `yaml:"default"`
+	Workspaces map[string]string `yaml:"workspaces"`
+}
+
+func getWallpaper(workspace string, config Config) string {
+	file := config.Default
+	workspaceFile := config.Workspaces[workspace]
+
+	if workspaceFile != "" {
+		file = workspaceFile
+	}
+
+	return file
+}
+
+func main() {
+	recv := i3.Subscribe(i3.WorkspaceEventType)
+
+	if len(os.Args) != 2 {
+		fmt.Errorf("Configuration required!")
+		os.Exit(1)
+	}
+
+	data, err := os.ReadFile(os.Args[1])
+	config := Config{}
+
+	if err != nil {
+		log.Printf("[error] %s", err.Error())
+	}
+
+	err = yaml.Unmarshal(data, &config)
+
+	if err != nil {
+		log.Printf("[error] %s", err.Error())
+	}
+
+	for recv.Next() {
+		event := recv.Event().(*i3.WorkspaceEvent)
+
+		if event.Change != "focus" {
+			continue
+		}
+
+		outputs, err := i3.GetOutputs()
+		args := []string{}
+
+		if err == nil {
+			for _, output := range outputs {
+				if output.CurrentWorkspace != "" {
+					args = append(args, "--bg-fill", getWallpaper(output.CurrentWorkspace, config))
+				}
+			}
+
+			cmd := exec.Command("feh", args...)
+			cmd.Env = os.Environ()
+			log.Printf("[DEBUG] %s", cmd.String())
+
+			if err := cmd.Run(); err != nil {
+				log.Printf("[ERROR] %s", err.Error())
+			}
+		} else {
+			log.Printf("[ERROR] %s", err.Error())
+		}
+	}
+}