Add global renderer instance to allow accessing renderer of icon engine

iconengineplugin/main.cpp

@@ -22,14 +22,11 @@ class QT_FORK_AWESOME_ICON_ENGINE_EXPORT ForkAwesomeIconEnginePlugin : public QI
 
 public:
     QIconEngine *create(const QString &filename = QString()) override;
-
-private:
-    const Renderer m_renderer;
 };
 
 QIconEngine *ForkAwesomeIconEnginePlugin::create(const QString &file)
 {
-    auto *const engine = new IconEngine(m_renderer);
+    auto *const engine = new IconEngine(Renderer::global());
     if (!file.isNull()) {
         engine->addFile(file, QSize(), QIcon::Normal, QIcon::Off);
     }

qtforkawesome/renderer.cpp

@@ -113,4 +113,13 @@ QPixmap Renderer::pixmap(Icon icon, const QSize &size, const QColor &color) cons
     return pixmap(QChar(static_cast<IconBaseType>(icon)), size, color);
 }
 
+/*!
+ * \brief Returns the global instance (which is so far only used by the icon engine plugin).
+ */
+Renderer &Renderer::global()
+{
+    static auto globalRenderer = Renderer();
+    return globalRenderer;
+}
+
 } // namespace QtForkAwesome

qtforkawesome/renderer.h

@@ -33,6 +33,8 @@ public:
     QPixmap pixmap(QChar icon, const QSize &size, const QColor &color) const;
     QPixmap pixmap(Icon icon, const QSize &size, const QColor &color) const;
 
+    static Renderer &global();
+
 private:
     std::unique_ptr<Renderer::InternalData> m_d;
 };