3 files changed, 112 insertions(+), 5 deletions(-)

M README.md
A widgets/temp.go
M widgets/window.go

@@ 22,10 22,14 @@ for further customization:
 ```
 - widget: Window
   excludeAppIDs: ["foot"]
+  titlePrefix: "\uf2a3 "
+  ellipsis: "\u2026"
 - widget: ExternalProgram
   command: /usr/bin/i3status
 - widget: SystemMonitor
   format: "\ue8b0 {cpu}% \ue8b2 {mem}% \ue8b3 {load}%"
+- widget: TempMonitor
+  format: "\ue8a2 {temp}\u00B0C \ue8a1 {fan}"
 - widget: Volume
   scrollDownCommand: volumeup
   scrollUpCommand: volumedown


@@ 150,6 154,17 @@ necessary, and will display two digits for the fractional part. Please note
 that the width and precision specification should be followed by the 'f'
 suffix, but no '%' prefix should be included.
 
+## TemperatureMonitor
+
+The TemperatureMonitor widget displays temperature and/or fan speed. It offers
+the following settings:
+
+- `format`: Determines how the widget is displayed. The default
+  format is `{temp:%d} {fan:%d}`.
+- `tempInput`: Specifies the file that keeps the current temperature.
+- `fanInput`: Specifies the file that keeps the current fan speed. 
+
+
 ### Volume
 
 The Volume widget shows and allows you to adjust the volume of an audio


@@ 192,7 207,7 @@ following options:
   it is trimmed and an ellipsis symbol is added (default: 80, set to -1 to
   disable trimming)
 - `ellipsis` - the symbol used as an ellipsis after trimming the window's
-  title (default: "\u2026")
+  title (default: "...")
 - `excludeAppIDs` - to make the title appear more standardized, the Window
   widget first removes the app ID from the title (because different
   applications place them in different locations) and then appends it back.

@@ 0,0 1,95 @@
+package widgets
+
+import (
+	"context"
+	"io"
+	"os"
+	"strconv"
+	"strings"
+	"time"
+
+	"gobytes.dev/statusbar"
+	"gobytes.dev/statusbar/internal/registry"
+)
+
+type TemperatureMonitor struct {
+	Format    string `yaml:"format"`
+	TempInput string `yaml:"tempInput"`
+	FanInput  string `yaml:"fanInput"`
+
+	format Format
+	status []statusbar.Block
+	baseWidget
+}
+
+func (w *TemperatureMonitor) WidgetName() string    { return "TempMonitor" }
+func (w *TemperatureMonitor) New() statusbar.Widget { return new(TemperatureMonitor) }
+
+func (w *TemperatureMonitor) Run(ctx context.Context, update statusbar.UpdateFunc, done func()) {
+	defer done()
+	w.init()
+	w.status = make([]statusbar.Block, 0, 2)
+	w.emitStatus(update)
+	t := time.NewTicker(1 * time.Second)
+	for {
+		select {
+		case <-ctx.Done():
+			return
+		case <-t.C:
+			w.emitStatus(update)
+		}
+	}
+}
+
+func (w *TemperatureMonitor) readInput(input string) (int, error) {
+	f, err := os.Open(input)
+	if err != nil {
+		return 0, err
+	}
+	defer f.Close()
+	bs, err := io.ReadAll(f)
+	if err != nil {
+		return 0, err
+	}
+	return strconv.Atoi(strings.TrimSpace(string(bs)))
+}
+
+func (w *TemperatureMonitor) emitStatus(update statusbar.UpdateFunc) {
+	w.status = w.status[:0]
+	temp, err := w.readInput(w.TempInput)
+	if err != nil {
+		w.errorf(err.Error())
+		temp = 0
+	}
+	fan, err := w.readInput(w.FanInput)
+	if err != nil {
+		w.errorf(err.Error())
+		fan = 0
+	}
+	w.status = append(w.status, statusbar.Block{
+		FullText: w.format.Format(temp/1000, fan),
+		Align:    "left",
+		Name:     "batmon",
+		Instance: "0",
+		Markup:   "pango",
+	})
+	update(w.status)
+}
+
+func (w *TemperatureMonitor) init() {
+	w.prefix = "TempMonitor"
+	if w.Format == "" {
+		w.Format = "{temp:%d} {fan:%d}"
+	}
+	w.format = ParseFormat(w.Format, "temp:%d", "fan:%d")
+	if w.TempInput == "" {
+		w.TempInput = "/sys/class/hwmon/hwmon3/temp1_input"
+	}
+	if w.FanInput == "" {
+		w.FanInput = "/sys/class/hwmon/hwmon3/fan1_input"
+	}
+}
+
+func init() {
+	registry.RegisterWidget(new(TemperatureMonitor))
+}

@@ 213,10 213,7 @@ func (w *Window) init() {
 		w.MaxTitleLen = 80
 	}
 	if w.Ellipsis == "" {
-		w.Ellipsis = "\u2026"
-	}
-	if w.TitlePrefix == "" {
-		w.TitlePrefix = "\uf2a3 "
+		w.Ellipsis = "..."
 	}
 }