qt: Initial OpenGL 3.0 renderer implementation

src/qt/qt_renderercommon.hpp

@@ -1,28 +1,37 @@
 #pragma once
 
-#include <QRect>
-#include <QImage>
+#include <QDialog>
 #include <QEvent>
+#include <QImage>
+#include <QRect>
+#include <QWidget>
 
-#include <vector>
-#include <tuple>
 #include <atomic>
 #include <memory>
+#include <tuple>
+#include <vector>
 
 class QWidget;
 
-class RendererCommon
-{
+class RendererCommon {
 public:
     RendererCommon();
 
-    void onResize(int width, int height);
-    virtual std::vector<std::tuple<uint8_t*, std::atomic_flag*>> getBuffers() = 0;
-protected:
-    bool eventDelegate(QEvent* event, bool& result);
+    void         onResize(int width, int height);
+    virtual void finalize() { }
 
-    QRect source, destination;
-    QWidget* parentWidget{nullptr};
+    virtual std::vector<std::tuple<uint8_t *, std::atomic_flag *>> getBuffers() = 0;
+
+    /* Does renderer implement options dialog */
+    virtual bool hasOptions() const { return false; }
+    /* Returns options dialog for renderer */
+    virtual QDialog *getOptions(QWidget *parent) { return nullptr; }
+
+protected:
+    bool eventDelegate(QEvent *event, bool &result);
+
+    QRect    source, destination;
+    QWidget *parentWidget { nullptr };
 
     std::vector<std::atomic_flag> buf_usage;
 };