Qt: Improve spacing

Source/Core/DolphinQt2/QtUtils/WrapInScrollArea.cpp

@@ -0,0 +1,48 @@
+// Copyright 2018 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#include "DolphinQt2/QtUtils/WrapInScrollArea.h"
+
+#include <QFrame>
+#include <QLayout>
+#include <QScrollArea>
+#include <QVBoxLayout>
+#include <QWidget>
+
+QWidget* GetWrappedWidget(QWidget* wrapped_widget, QWidget* to_resize, int margin)
+{
+  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.
+    int recommended_width = wrapped_widget->width() * 0.9;
+    int recommended_height = wrapped_widget->height() + margin;
+
+    to_resize->resize(std::max(recommended_width, to_resize->width()),
+                      std::max(recommended_height, to_resize->height()));
+  }
+
+  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);
+
+  auto* scroll_layout = new QVBoxLayout;
+  scroll_layout->addWidget(scroll_area);
+  scroll_layout->setMargin(0);
+
+  parent->setLayout(scroll_layout);
+}

Source/Core/DolphinQt2/QtUtils/WrapInScrollArea.h

@@ -0,0 +1,13 @@
+// Copyright 2018 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+class QLayout;
+class QWidget;
+
+QWidget* GetWrappedWidget(QWidget* wrapped_widget, QWidget* to_resize = nullptr, int margin = 50);
+
+// Wrap wrapped_layout in a QScrollArea and fill the parent widget with it
+void WrapInScrollArea(QWidget* parent, QLayout* wrapped_layout, QWidget* to_resize = nullptr);