Tweak GlCpuTemp widget to support other sensor units

The current code assumes all sensors report temperature, when in fact glances' sensor plugin also reports rpm (eg fan speeds) and percentages (eg batteries).

Changes:

 * Add support for percentages
 * Add support for rpm

Note: this widget should really be called something like `GlSensors`, but I haven't been able to easily find a way of renaming it without breaking people's existing configs and workflows.

src/components/Widgets/GlCpuTemp.vue

@@ -2,7 +2,7 @@
 <div class="glances-temp-wrapper" v-if="tempData">
   <div class="temp-row" v-for="sensor in tempData" :key="sensor.label">
     <p class="label">{{ sensor.label | formatLbl }}</p>
-    <p :class="`temp range-${sensor.color}`">{{ sensor.value | formatVal }}</p>
+    <p :class="`temp range-${sensor.color}`">{{ sensor.value | formatVal(sensor.sensorType) }}</p>
   </div>
 </div>
 </template>
@@ -29,8 +29,15 @@ export default {
     formatLbl(lbl) {
       return capitalize(lbl);
     },
-    formatVal(val) {
+    formatVal(val, sensorType) {
+      switch (sensorType) {
+        case 'rpm':
+          return `${Math.round(val)} rpm`;
+        case 'percentage':
+          return `${Math.round(val)}%`;
+        default:
           return `${Math.round(val)}°C`;
+      }
     },
   },
   methods: {
@@ -40,14 +47,49 @@ export default {
       if (temp >= 75) return 'red';
       return 'grey';
     },
+    getPercentageColor(percentage) {
+      if (percentage < 20) return 'red';
+      if (percentage < 50) return 'orange';
+      if (percentage < 75) return 'yellow';
+      return 'green';
+    },
     processData(sensorData) {
       const results = [];
       sensorData.forEach((sensor) => {
-        const tempC = sensor.unit === 'F' ? fahrenheitToCelsius(sensor.value) : sensor.value;
+        // Start by assuming the sensor's unit is degrees Celsius
+        let sensorValue = sensor.value;
+        let color = this.getTempColor(sensorValue);
+        let sensorType = 'temperature';
+
+        // Now, override above if sensor unit is actually of a different type
+        switch (sensor.unit) {
+          case 'F':
+            sensorValue = fahrenheitToCelsius(sensorValue);
+            color = fahrenheitToCelsius(sensorValue);
+            break;
+
+          // R is for RPM and is typically for fans
+          case 'R':
+            color = 'grey';
+            sensorType = 'rpm';
+            break;
+
+          // For instance, battery levels
+          case '%':
+            sensorType = 'percentage';
+            color = this.getPercentageColor(sensorValue);
+            break;
+
+          // Nothing to do here, already covered by default values
+          default:
+            break;
+        }
+
         results.push({
           label: sensor.label,
-          value: tempC,
-          color: this.getTempColor(tempC),
+          value: sensorValue,
+          color,
+          sensorType,
         });
       });
       this.tempData = results;