DolphinQt: Add utility function for creating label text with a standard icon.

Source/Core/DolphinQt/QtUtils/QtUtils.cpp

@@ -4,6 +4,8 @@
 #include "DolphinQt/QtUtils/QtUtils.h"
 
 #include <QDateTimeEdit>
+#include <QHBoxLayout>
+#include <QLabel>
 
 namespace QtUtils
 {
@@ -19,4 +21,18 @@ void ShowFourDigitYear(QDateTimeEdit* widget)
   }
 }
 
+QWidget* CreateIconWarning(QWidget* parent, QStyle::StandardPixmap standard_pixmap, QLabel* label)
+{
+  const auto size = QFontMetrics(parent->font()).height() * 5 / 4;
+
+  auto* const icon = new QLabel{};
+  icon->setPixmap(parent->style()->standardIcon(standard_pixmap).pixmap(size, size));
+
+  auto* const widget = new QWidget;
+  auto* const layout = new QHBoxLayout{widget};
+  layout->addWidget(icon);
+  layout->addWidget(label, 1);
+  return widget;
+}
+
 }  // namespace QtUtils

Source/Core/DolphinQt/QtUtils/QtUtils.h

@@ -3,11 +3,17 @@
 
 #pragma once
 
+#include <QStyle>
+
 class QDateTimeEdit;
+class QLabel;
+class QWidget;
 
 namespace QtUtils
 {
 
 void ShowFourDigitYear(QDateTimeEdit* widget);
 
-}
+QWidget* CreateIconWarning(QWidget* parent, QStyle::StandardPixmap standard_pixmap, QLabel* label);
+
+}  // namespace QtUtils