From dac3b33efba7872ab5ff1f458e3248632e4d2edf Mon Sep 17 00:00:00 2001
From: scrawl <scrawl@baseoftrash.de>
Date: Fri, 18 Sep 2015 18:29:40 +0200
Subject: [PATCH] OpenCS: Pass events from the QGLWidget to the RenderWidget

---
 apps/opencs/view/render/scenewidget.cpp | 21 +++++++++++++++++++++
 apps/opencs/view/render/scenewidget.hpp |  2 ++
 2 files changed, 23 insertions(+)

diff --git a/apps/opencs/view/render/scenewidget.cpp b/apps/opencs/view/render/scenewidget.cpp
index 0a5087998..fb3bcb3c3 100644
--- a/apps/opencs/view/render/scenewidget.cpp
+++ b/apps/opencs/view/render/scenewidget.cpp
@@ -56,6 +56,9 @@ RenderWidget::RenderWidget(QWidget *parent, Qt::WindowFlags f)
     layout->addWidget(window->getGLWidget());
     setLayout(layout);
 
+    // Pass events through this widget first
+    window->getGLWidget()->installEventFilter(this);
+
     mView->getCamera()->setGraphicsContext(window);
     mView->getCamera()->setClearColor( osg::Vec4(0.2, 0.2, 0.6, 1.0) );
     mView->getCamera()->setViewport( new osg::Viewport(0, 0, traits->width, traits->height) );
@@ -94,6 +97,24 @@ void RenderWidget::setVisibilityMask(int mask)
     mView->getCamera()->setCullMask(mask<<1);
 }
 
+bool RenderWidget::eventFilter(QObject* obj, QEvent* event)
+{
+    // handle event in this widget, is there a better way to do this?
+    if (event->type() == QEvent::MouseButtonPress)
+        mousePressEvent(static_cast<QMouseEvent*>(event));
+    if (event->type() == QEvent::MouseButtonRelease)
+        mouseReleaseEvent(static_cast<QMouseEvent*>(event));
+    if (event->type() == QEvent::MouseMove)
+        mouseMoveEvent(static_cast<QMouseEvent*>(event));
+    if (event->type() == QEvent::KeyPress)
+        keyPressEvent(static_cast<QKeyEvent*>(event));
+    if (event->type() == QEvent::KeyRelease)
+        keyReleaseEvent(static_cast<QKeyEvent*>(event));
+
+    // Always pass the event on to GLWidget, i.e. to OSG event queue
+    return QObject::eventFilter(obj, event);
+}
+
 // --------------------------------------------------
 
 CompositeViewer::CompositeViewer()
diff --git a/apps/opencs/view/render/scenewidget.hpp b/apps/opencs/view/render/scenewidget.hpp
index 54f001c15..63da01a45 100644
--- a/apps/opencs/view/render/scenewidget.hpp
+++ b/apps/opencs/view/render/scenewidget.hpp
@@ -45,6 +45,8 @@ namespace CSVRender
 
         void setVisibilityMask(int mask);
 
+        bool eventFilter(QObject *, QEvent *);
+
     protected:
 
         osg::ref_ptr<osgViewer::View> mView;