WinXP+Intel GFX only works with slow QWidget, so lets have both

sleepyhead/Graphs/gGraphView.cpp

@@ -233,8 +233,12 @@ gGraph *gGraphView::popGraph()
 }
 
 gGraphView::gGraphView(QWidget *parent, gGraphView *shared)
-  : QGLWidget(QGLFormat(QGL::DoubleBuffer | QGL::DirectRendering | QGL::HasOverlay | QGL::Rgba),parent,shared),
-    m_offsetY(0), m_offsetX(0), m_scaleY(1.0), m_scrollbar(nullptr)
+#ifdef BROKEN_OPENGL_BUILD
+    : QWidget(parent)
+#else
+    : QGLWidget(QGLFormat(QGL::DoubleBuffer | QGL::DirectRendering | QGL::HasOverlay | QGL::Rgba),parent,shared),
+#endif
+      m_offsetY(0), m_offsetX(0), m_scaleY(1.0), m_scrollbar(nullptr)
 {
     m_shared = shared;
     m_sizer_index = m_graph_index = 0;
@@ -272,7 +276,7 @@ gGraphView::gGraphView(QWidget *parent, gGraphView *shared)
     print_scaleY = print_scaleX = 1.0;
 
     redrawtimer = new QTimer(this);
-    connect(redrawtimer, SIGNAL(timeout()), SLOT(updateGL()));
+    connect(redrawtimer, SIGNAL(timeout()), SLOT(redraw()));
 
     m_fadingOut = false;
     m_fadingIn = false;
@@ -289,8 +293,10 @@ gGraphView::gGraphView(QWidget *parent, gGraphView *shared)
     m_dpr = 1;
 #endif
 
+#ifndef BROKEN_OPENGL_BUILD
     setAutoFillBackground(false);
     setAutoBufferSwap(false);
+#endif
 }
 void gGraphView::closeEvent(QCloseEvent * event)
 {
@@ -309,6 +315,9 @@ void gGraphView::closeEvent(QCloseEvent * event)
 
 gGraphView::~gGraphView()
 {
+#ifndef BROKEN_OPENGL_BUILD
+    doneCurrent();
+#endif
 
 #ifdef ENABLE_THREADED_DRAWING
 
@@ -1735,7 +1744,7 @@ void gGraphView::keyPressEvent(QKeyEvent *event)
         m_offsetY -= PROFILE.appearance->graphHeight() * 3 * m_scaleY;
         m_scrollbar->setValue(m_offsetY);
         m_offsetY = m_scrollbar->value();
-        updateGL();
+        redraw();
         return;
     } else if (event->key() == Qt::Key_PageDown) {
         m_offsetY += PROFILE.appearance->graphHeight() * 3 * m_scaleY; //PROFILE.appearance->graphHeight();
@@ -1744,7 +1753,7 @@ void gGraphView::keyPressEvent(QKeyEvent *event)
 
         m_scrollbar->setValue(m_offsetY);
         m_offsetY = m_scrollbar->value();
-        updateGL();
+        redraw();
         return;
         //        redraw();
     }
@@ -2010,7 +2019,9 @@ int gGraphView::visibleGraphs()
 
 void gGraphView::redraw()
 {
-    if (!m_inAnimation) {
-        updateGL();
-    }
+#ifdef BROKEN_OPENGL_BUILD
+    repaint();
+#else
+    updateGL();
+#endif
 }

sleepyhead/Graphs/gGraphView.h

@@ -21,7 +21,10 @@
 #include <QPixmap>
 #include <QRect>
 #include <QPixmapCache>
+
+#ifdef BROKEN_OPENGL_BUILD
 #include <QGLWidget>
+#endif
 
 #include <Graphs/gGraph.h>
 #include <Graphs/glcommon.h>
@@ -160,7 +163,12 @@ class gToolTip : public QObject
     It led to quite a performance increase over the old Qt method.
 
     */
-class gGraphView : public QGLWidget
+class gGraphView
+#ifdef BROKEN_OPENGL_BUILD
+        :public QWidget
+#else
+        :public QGLWidget
+#endif
 {
     Q_OBJECT
   public:
@@ -234,9 +242,6 @@ class gGraphView : public QGLWidget
     //! \brief Set a redraw timer for ms milliseconds, clearing any previous redraw timer.
     void timedRedraw(int ms);
 
-    //! \brief Call UpdateGL unless animation is in progress
-    void redraw();
-
     gGraph *m_selected_graph;
     gToolTip *m_tooltip;
     QTimer *timer;
@@ -436,6 +441,10 @@ class gGraphView : public QGLWidget
 
     //! \brief Simply refreshes the GL view, called when timeout expires.
     void refreshTimeout();
+
+    //! \brief Call UpdateGL unless animation is in progress
+    void redraw();
+
 };
 
 #endif // GGRAPHVIEW_H

sleepyhead/sleepyhead.pro

@@ -4,7 +4,7 @@
 #
 #-------------------------------------------------
 
-QT += core gui opengl network xml
+QT += core gui network xml
 
 greaterThan(QT_MAJOR_VERSION,4) {
     QT += widgets webkitwidgets
@@ -12,6 +12,17 @@ greaterThan(QT_MAJOR_VERSION,4) {
     QT += webkit
 }
 
+
+#Windows XP with older intel cards needs the following variable defined
+#It slows other platforms down way too much
+DEFINES += BROKEN_OPENGL_BUILD
+contains(DEFINES, BROKEN_OPENGL_BUILD) {
+    message("Building with QWidget gGraphView")
+} else {
+    message("Building with QGLWidget gGraphView")
+    QT += opengl
+}
+
 #CONFIG += c++11
 CONFIG += rtti