Hi everyone, I'm trying to modify the osgViewerQt example by adding a new class of my own that will contain the viewer. The design is:
- *wrapper.h*: Defines class *Wrapper*. It inherits from *QMainWindow*and has a *QDockWidget* where the *ViewerWidget* will be attached. - *viewer.h: *Defines *ViewerWidget* class. It's the class from the example, with a few mods by me. - *prueba_osg.cpp: * Main function and where a QApplication is created. A Wrapper object is created here. The project compiles, but when I execute it, I get an error: *QWidget: Must construct a QApplication before a QPaintDevice* If I remove the *Q_OBJECT* line, the signal and the slot from *wrapper.h*and compile the files from the terminal using *g++ -IE:/osg-3.0.1/install/include -LE:/osg-3.0.1/install/bin -IC:/Qt64/4.8/include -LC:/Qt64/4.8/bin -losgViewer -lOpenThreads -losgDB -losg -losgGA -losgQt -lQtCore4 -lQtGui4 prueba_qt.cpp* I can execute the app. Can you please tell me what can I do to make this work? I've struggling all morning but couldn't find the solution. Thanks for your time! ... PS: Attached to this post are the files I used in this project, including the pro file from qmake.
#include <QtGui/QApplication>
#include <iostream>
#include "wrapper.h"
int main( int argc, char** argv )
{
osg::ArgumentParser arguments(&argc, argv);
// osgViewer::ViewerBase::ThreadingModel threadingModel = osgViewer::ViewerBase::CullDrawThreadPerContext;
/*i
osgViewer::ViewerBase::ThreadingModel threadingModel = osgViewer::ViewerBase::ThreadPerCamera;
while (arguments.read("--SingleThreaded")) threadingModel = osgViewer::ViewerBase::SingleThreaded;
while (arguments.read("--CullDrawThreadPerContext")) threadingModel = osgViewer::ViewerBase::CullDrawThreadPerContext;
while (arguments.read("--DrawThreadPerContext")) threadingModel = osgViewer::ViewerBase::DrawThreadPerContext;
while (arguments.read("--CullThreadPerCameraDrawThreadPerContext")) threadingModel = osgViewer::ViewerBase::CullThreadPerCameraDrawThreadPerContext;
*/
QApplication app(argc, argv);
// ViewerWidget* viewWidget = new ViewerWidget(threadingModel);
// viewWidget->setGeometry( 100, 100, 800, 600 );
// viewWidget->show();
// QDockWidget* dock = new QDockWidget;
// dock->setWidget(viewWidget);
// dock->show();
Wrapper wrap;
wrap.resize(800,600);
wrap.setWindowTitle("Cow");
wrap.showNormal();
wrap.Do();
// for(unsigned int i(0);i<1000000;++i) {
// std::cout << i << " ";
// }
// std::cout << std::endl;
// wrap.Add();
return app.exec();
}
#ifndef Viewer_hpp
#define Viewer_hpp
#include <QtGui/QGridLayout>
#include <QtGui/QWidget>
#include <QtCore/QTimer>
#include <osgViewer/CompositeViewer>
#include <osgViewer/ViewerEventHandlers>
#include <osgGA/TrackballManipulator>
#include <osgDB/ReadFile>
#include <osgQt/GraphicsWindowQt>
class ViewerWidget : public QWidget, public osgViewer::CompositeViewer
{
public:
ViewerWidget(osgViewer::ViewerBase::ThreadingModel threadingModel= osgViewer::ViewerBase::ThreadPerCamera ) : QWidget()
{
setThreadingModel(threadingModel);
}
QWidget* addViewWidget( osg::Camera* camera, osg::Node* scene )
{
osgViewer::View* view = new osgViewer::View;
view->setCamera( camera );
addView( view );
view->setSceneData( scene );
view->addEventHandler( new osgViewer::StatsHandler );
view->setCameraManipulator( new osgGA::TrackballManipulator );
osgQt::GraphicsWindowQt* gw = dynamic_cast<osgQt::GraphicsWindowQt*>( camera->getGraphicsContext() );
return gw ? gw->getGLWidget() : NULL;
}
osg::Camera* createCamera( int x, int y, int w, int h, const std::string& name="", bool windowDecoration=true )
{
osg::DisplaySettings* ds = osg::DisplaySettings::instance().get();
osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits;
traits->windowName = name;
traits->windowDecoration = windowDecoration;
traits->x = x;
traits->y = y;
traits->width = w;
traits->height = h;
traits->doubleBuffer = true;
traits->alpha = ds->getMinimumNumAlphaBits();
traits->stencil = ds->getMinimumNumStencilBits();
traits->sampleBuffers = ds->getMultiSamples();
traits->samples = ds->getNumMultiSamples();
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
camera->setGraphicsContext( new osgQt::GraphicsWindowQt(traits.get()) );
camera->setClearColor( osg::Vec4(0.2, 0.2, 0.6, 1.0) );
camera->setViewport( new osg::Viewport(0, 0, traits->width, traits->height) );
camera->setProjectionMatrixAsPerspective(
30.0f, static_cast<double>(traits->width)/static_cast<double>(traits->height), 1.0f, 10000.0f );
return camera.release();
}
void Do(void) {
QWidget* widget1 = addViewWidget( createCamera(0,0,100,100), osgDB::readNodeFile("cow.osgt") );
// osg::ref_ptr<osg::Node> node = new osg::Geode;
// QWidget* widget1 = addViewWidget( createCamera(0,0,100,100), node );
QGridLayout* grid = new QGridLayout;
grid->addWidget( widget1, 0, 0 );
setLayout( grid );
connect( &_timer, SIGNAL(timeout()), this, SLOT(update()) );
_timer.start( 10 );
}
void Add(void) {
}
virtual void paintEvent( QPaintEvent* event )
{ frame(); }
protected:
QTimer _timer;
};
#endif
#include "wrapper.h"
Wrapper::Wrapper(void) {
view = new ViewerWidget();
// view->setGeometry( 100, 100, 800, 600 );
dock = new QDockWidget;
dock->setWidget( view );
dock->setGeometry( 100, 100, 800, 600 );
dock->setAllowedAreas(Qt::RightDockWidgetArea);
addDockWidget(Qt::RightDockWidgetArea, dock);
dock->show();
}
#ifndef Wrapper_hpp
#define Wrapper_hpp
#include "viewer.h"
#include <QtGui/QMainWindow>
#include <QtGui/QDockWidget>
class Wrapper: public QMainWindow {
private:
ViewerWidget* view;
QDockWidget* dock;
public:
Wrapper(void) {
view = new ViewerWidget();
// view->setGeometry( 100, 100, 800, 600 );
dock = new QDockWidget;
dock->setWidget( view );
dock->setGeometry( 100, 100, 800, 600 );
dock->setAllowedAreas(Qt::RightDockWidgetArea);
addDockWidget(Qt::RightDockWidgetArea, dock);
dock->show();
}
void Do(void) { view->Do(); }
void Add(void) { view->Add(); }
virtual ~Wrapper(void) {
// delete view;
// delete dock;
}
};
#endif
prueba_osg.pro
Description: Binary data
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