Merge pull request #3250 from hansimgamr/feat/t114-charging-indicator

Add charging indicator to companion_radio battery icon

examples/companion_radio/ui-new/UITask.cpp

@@ -146,11 +146,24 @@ class HomeScreen : public UIScreen {
     int fillWidth = (batteryPercentage * (iconWidth - 4)) / 100;
     display.fillRect(iconX + 2, iconY + 2, fillWidth, iconHeight - 4);
 
-    // show muted icon if buzzer is muted
+    // while charging, show a bolt (or a plug once full) just left of the battery,
+    // keeping the fill bar itself clean and uninterrupted
+    bool charging = board.isExternalPowered();
+    if (charging) {
+      // There's no charge-complete signal on most boards, so "full" is a high
+      // voltage band rather than an exact 100% (a real pack rarely reads 4.2V).
+      const int BATT_FULL_PCT = 95;
+      const uint8_t* symbol = (batteryPercentage >= BATT_FULL_PCT) ? plug_icon : charging_icon;
+      display.setColor(UIColor::title_txt);
+      display.drawXbm(iconX - 9, iconY + 1, symbol, 8, 8);
+    }
+
+    // show muted icon if buzzer is muted (shifted further left when the charging
+    // icon already occupies the slot immediately left of the battery)
 #ifdef PIN_BUZZER
     if (_task->isBuzzerQuiet()) {
       display.setColor(UIColor::warning_txt);
-      display.drawXbm(iconX - 9, iconY + 1, muted_icon, 8, 8);
+      display.drawXbm(iconX - (charging ? 18 : 9), iconY + 1, muted_icon, 8, 8);
     }
 #endif
   }

examples/companion_radio/ui-new/icons.h

@@ -119,4 +119,14 @@ static const uint8_t advert_icon[] = {
 
 static const uint8_t muted_icon[] = {
   0x20, 0x6a, 0xea, 0xe4, 0xe4, 0xea, 0x6a, 0x20
+};
+
+// small lightning bolt, 8x8px, shown next to the battery icon while charging
+static const uint8_t charging_icon[] = {
+  0x18, 0x30, 0x60, 0xFC, 0x18, 0x30, 0x60, 0xC0
+};
+
+// small power plug, 8x8px, shown next to the battery icon once fully charged
+static const uint8_t plug_icon[] = {
+  0x24, 0x24, 0x7E, 0x7E, 0x7E, 0x3C, 0x18, 0x18
 };