Move DolphinQt2 to DolphinQt

Source/Core/DolphinQt/QtUtils/WrapInScrollArea.cpp

@@ -0,0 +1,63 @@
+// Copyright 2018 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#include "DolphinQt/QtUtils/WrapInScrollArea.h"
+
+#include <QFrame>
+#include <QLayout>
+#include <QPalette>
+#include <QScrollArea>
+#include <QVBoxLayout>
+#include <QWidget>
+
+QWidget* GetWrappedWidget(QWidget* wrapped_widget, QWidget* to_resize, int margin_width,
+                          int margin_height)
+{
+  auto* scroll = new QScrollArea;
+  scroll->setWidget(wrapped_widget);
+  scroll->setWidgetResizable(true);
+  scroll->setFrameStyle(QFrame::NoFrame);
+
+  if (to_resize != nullptr)
+  {
+    // For some reason width() is bigger than it needs to be.
+    auto min_size = wrapped_widget->minimumSizeHint();
+    int recommended_width = min_size.width() + margin_width;
+    int recommended_height = min_size.height() + margin_height;
+
+    to_resize->resize(std::max(recommended_width, to_resize->width()),
+                      std::max(recommended_height, to_resize->height()));
+  }
+
+#if defined(_WIN32) || defined(__APPLE__)
+  // Transparency can cause unwanted side-effects on OSes other than Windows / macOS
+
+  // Make sure the background color stays consistent with the parent widget
+  QPalette p = wrapped_widget->palette();
+
+  p.setColor(QPalette::Window, QColor(0, 0, 0, 0));
+
+  wrapped_widget->setPalette(p);
+  scroll->setPalette(p);
+#endif
+
+  return scroll;
+}
+
+void WrapInScrollArea(QWidget* parent, QLayout* wrapped_layout, QWidget* to_resize)
+{
+  if (to_resize == nullptr)
+    to_resize = parent;
+
+  auto* widget = new QWidget;
+  widget->setLayout(wrapped_layout);
+
+  auto* scroll_area = GetWrappedWidget(widget, to_resize, 0, 0);
+
+  auto* scroll_layout = new QVBoxLayout;
+  scroll_layout->addWidget(scroll_area);
+  scroll_layout->setMargin(0);
+
+  parent->setLayout(scroll_layout);
+}