Force checkbox to be square.

radio/src/thirdparty/libopenui/src/checkbox.cpp

@@ -44,15 +44,11 @@ void CheckBox::onEvent(event_t event)
 #if defined(HARDWARE_TOUCH)
 bool CheckBox::onTouchEnd(coord_t x, coord_t y)
 {
-  if (enabled)
-  {
-    if (x < (rect.w >> 2))
-    {
-      onKeyPress();
-      _setValue(!getValue());
-      setFocus(SET_FOCUS_DEFAULT);
-      invalidate();
-    }
+  if (enabled) {
+    onKeyPress();
+    _setValue(!getValue());
+    setFocus(SET_FOCUS_DEFAULT);
+    invalidate();
   }
   return true;
 }

radio/src/thirdparty/libopenui/src/checkbox.h

@@ -29,6 +29,9 @@ class CheckBox : public FormField {
       _getValue(std::move(getValue)),
       _setValue(std::move(setValue))
     {
+      coord_t size = min(rect.w, rect.h);
+      setWidth(size);
+      setHeight(size);
     }
 
 #if defined(DEBUG_WINDOWS)