ui: toggle control supports active icons (#26514)

* support active icons

* function

* fix crash if not setting icon but active icon

* revert

* clean up

selfdrive/ui/qt/widgets/controls.cc

@@ -26,10 +26,10 @@ AbstractControl::AbstractControl(const QString &title, const QString &desc, cons
   hlayout->setSpacing(20);
 
   // left icon
+  icon_label = new QLabel();
   if (!icon.isEmpty()) {
-    QPixmap pix(icon);
-    QLabel *icon_label = new QLabel();
-    icon_label->setPixmap(pix.scaledToWidth(80, Qt::SmoothTransformation));
+    icon_pixmap = QPixmap(icon).scaledToWidth(80, Qt::SmoothTransformation);
+    icon_label->setPixmap(icon_pixmap);
     icon_label->setSizePolicy(QSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed));
     hlayout->addWidget(icon_label);
   }

selfdrive/ui/qt/widgets/controls.h

@@ -54,6 +54,9 @@ public:
     return description->text();
   }
 
+  QLabel *icon_label;
+  QPixmap icon_pixmap;
+
 public slots:
   void showDescription() {
     description->setVisible(true);
@@ -153,6 +156,12 @@ public:
       } else {
         toggle.togglePosition();
       }
+
+      if (state && !active_icon_pixmap.isNull()) {
+        icon_label->setPixmap(active_icon_pixmap);
+      } else if (!icon_pixmap.isNull()) {
+        icon_label->setPixmap(icon_pixmap);
+      }
     });
   }
 
@@ -161,6 +170,10 @@ public:
     store_confirm = _store_confirm;
   };
 
+  void setActiveIcon(const QString &icon) {
+    active_icon_pixmap = QPixmap(icon).scaledToWidth(80, Qt::SmoothTransformation);
+  }
+
   void refresh() {
     if (params.getBool(key) != toggle.on) {
       toggle.togglePosition();
@@ -174,6 +187,7 @@ public:
 private:
   std::string key;
   Params params;
+  QPixmap active_icon_pixmap;
   bool confirm = false;
   bool store_confirm = false;
 };