src

commit 165bdcb09c1124b82c4585b0d8e99e24aea614ce
parent fbe8f2ab494c621aebdcbaaa6b69327baeec5760
Author: dwrz <dwrz@dwrz.net>
Date:   Sun,  9 Nov 2025 19:14:03 +0000

Add statusbar mlight package

Diffstat:
M
cmd/statusbar/config/config.go
 | 
3
+++
A
pkg/statusbar/mlight/mlight.go
 | 
53
+++++++++++++++++++++++++++++++++++++++++++++++++++++

2 files changed, 56 insertions(+), 0 deletions(-)
diff --git a/cmd/statusbar/config/config.go b/cmd/statusbar/config/config.go
@@ -15,6 +15,7 @@ import (
 	"code.dwrz.net/src/pkg/statusbar/light"
 	"code.dwrz.net/src/pkg/statusbar/memory"
 	"code.dwrz.net/src/pkg/statusbar/mic"
+	"code.dwrz.net/src/pkg/statusbar/mlight"
 	"code.dwrz.net/src/pkg/statusbar/power"
 	"code.dwrz.net/src/pkg/statusbar/temp"
 	"code.dwrz.net/src/pkg/statusbar/volume"
@@ -115,6 +116,8 @@ func CreateBlock(bconf BlockConfig, cfg *Config) (statusbar.Block, error) {
 		return eth.New(bconf.Eth.Iface), nil
 	case "light":
 		return light.New(), nil
+	case "mlight":
+		return mlight.New(), nil
 	case "memory":
 		return memory.New(), nil
 	case "mic":
diff --git a/pkg/statusbar/mlight/mlight.go b/pkg/statusbar/mlight/mlight.go
@@ -0,0 +1,53 @@
+package mlight
+
+import (
+	"context"
+	"fmt"
+	"os/exec"
+	"strconv"
+	"strings"
+)
+
+const (
+	// VCPBrightnessCode is the VCP code for monitor brightness.
+	VCPBrightnessCode = "10"
+)
+
+// Block implements the statusbar.Block interface for monitor brightness.
+type Block struct{}
+
+// New returns a new mlight Block.
+func New() *Block {
+	return &Block{}
+}
+
+// Name returns the name of the block.
+func (b *Block) Name() string {
+	return "mlight"
+}
+
+// Render displays the current monitor brightness.
+func (b *Block) Render(ctx context.Context) (string, error) {
+	out, err := exec.CommandContext(
+		ctx,
+		"ddcutil",
+		"--terse",
+		"getvcp",
+		VCPBrightnessCode,
+	).Output()
+	if err != nil {
+		return "", fmt.Errorf("failed to exec ddcutil: %v", err)
+	}
+
+	fields := strings.Fields(string(out))
+	if len(fields) < 2 {
+		return " ", nil
+	}
+
+	val, err := strconv.Atoi(fields[1])
+	if err != nil {
+		return " ", nil
+	}
+
+	return fmt.Sprintf(" %d%%", val), nil
+}