use pure OpenGL rendering with Qt instead of QGLWidget

drape_head/drape_head.pro

@@ -24,12 +24,13 @@ HEADERS += \
     mainwindow.hpp \
     glwidget.hpp \
     qtoglcontext.hpp \
+    qtoglcontextfactory.hpp \
+    drape_surface.hpp \
 
 SOURCES += \
     mainwindow.cpp \
     main.cpp \
     glwidget.cpp \
     qtoglcontext.cpp \
-
-FORMS += \
-    mainwindow.ui
+    qtoglcontextfactory.cpp \ 
+    drape_surface.cpp \

drape_head/drape_surface.cpp

@@ -0,0 +1,25 @@
+#include "drape_surface.hpp"
+
+#include "../base/logging.hpp"
+
+DrapeSurface::DrapeSurface()
+  : m_contextFactory(NULL)
+{
+  setSurfaceType(QSurface::OpenGLSurface);
+}
+
+DrapeSurface::~DrapeSurface()
+{
+  delete m_contextFactory;
+}
+
+void DrapeSurface::exposeEvent(QExposeEvent *e)
+{
+  Q_UNUSED(e);
+
+  if (isExposed() && m_contextFactory == NULL)
+  {
+    m_contextFactory = new QtOGLContextFactory(this);
+    CreateEngine();
+  }
+}

drape_head/drape_surface.hpp

@@ -0,0 +1,20 @@
+#pragma once
+
+#include "qtoglcontextfactory.hpp"
+#include <QtGui/QWindow>
+
+class DrapeSurface : public QWindow
+{
+public:
+  DrapeSurface();
+  ~DrapeSurface();
+
+protected:
+  void exposeEvent(QExposeEvent * e);
+
+private:
+  void CreateEngine() {}
+
+private:
+  QtOGLContextFactory * m_contextFactory;
+};

drape_head/mainwindow.cpp

@@ -1,16 +1,16 @@
 #include "mainwindow.hpp"
-#include "ui_mainwindow.h"
 
-MainWindow::MainWindow(QWidget *parent) :
-  QMainWindow(parent),
-  ui(new Ui::MainWindow)
+#include "drape_surface.hpp"
+
+#include <QtWidgets/QWidget>
+
+MainWindow::MainWindow(QWidget *parent)
+  : QMainWindow(parent)
 {
-  ui->setupUi(this);
-  m_widget = new GLWidget();
-  setCentralWidget(m_widget);
+  DrapeSurface * surface = new DrapeSurface();
+  setCentralWidget(QWidget::createWindowContainer(surface, this));
 }
 
 MainWindow::~MainWindow()
 {
-  delete ui;
 }

drape_head/mainwindow.hpp

@@ -2,12 +2,6 @@
 
 #include <QMainWindow>
 
-#include "glwidget.hpp"
-
-namespace Ui {
-class MainWindow;
-}
-
 class MainWindow : public QMainWindow
 {
   Q_OBJECT
@@ -15,8 +9,4 @@ class MainWindow : public QMainWindow
 public:
   explicit MainWindow(QWidget *parent = 0);
   ~MainWindow();
-  
-private:
-  Ui::MainWindow *ui;
-  GLWidget * m_widget;
 };

drape_head/mainwindow.ui

@@ -1,24 +0,0 @@
-<ui version="4.0">
- <class>MainWindow</class>
- <widget class="QMainWindow" name="MainWindow" >
-  <property name="geometry" >
-   <rect>
-    <x>0</x>
-    <y>0</y>
-    <width>400</width>
-    <height>300</height>
-   </rect>
-  </property>
-  <property name="windowTitle" >
-   <string>MainWindow</string>
-  </property>
-  <widget class="QMenuBar" name="menuBar" />
-  <widget class="QToolBar" name="mainToolBar" />
-  <widget class="QWidget" name="centralWidget" />
-  <widget class="QStatusBar" name="statusBar" />
- </widget>
- <layoutDefault spacing="6" margin="11" />
- <pixmapfunction></pixmapfunction>
- <resources/>
- <connections/>
-</ui>