gl: fix devicePixelRatio in qt5.0

KoWunnaKo · Jul 5, 2016 · f45954f · f45954f
1 parent cfe4bee
commit f45954f
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/widgets/OpenGLWidgetRenderer.cpp b/widgets/OpenGLWidgetRenderer.cpp
@@ -21,6 +21,7 @@
 
 #include "QtAVWidgets/OpenGLWidgetRenderer.h"
 #include "QtAV/private/OpenGLRendererBase_p.h"
+#include <QtGui/QGuiApplication>
 #include <QtGui/QResizeEvent>
 #include <QtGui/QScreen>
 
@@ -62,10 +63,12 @@ void OpenGLWidgetRenderer::resizeGL(int w, int h)
     // QGLWidget uses window()->windowHandle()->devicePixelRatio() for resizeGL(), while QOpenGLWidget does not, so scale here
 #if QT_VERSION >= QT_VERSION_CHECK(5, 5, 0)
     const qreal dpr = context()->screen()->devicePixelRatio();
-#else
+#elif QT_VERSION >= QT_VERSION_CHECK(5, 1, 0)
     // qApp->devicePixelRatio() is global, window()->windowHandle()->devicePixelRatio() depends on screen, check window() and windowHandle() is required.
     // QWidget.devicePixelRatio() is int, but float value is not implemented in old qt, so just use int is fine.
     const qreal dpr = devicePixelRatio();
+#else
+    const qreal dpr = qApp->devicePixelRatio();
 #endif
     onResizeGL(w*dpr, h*dpr);
 }