Re: [osg-users] MousepressEvent not able to capture from osg::Viewer by Qt
On 8.5.2013 7:04, Sujan Dasmahapatra wrote:
I am trying to implement a mouse press event with QT and OSG but
unable to do it. Pls help.
Below is my ViewerWidget class which is derived from QWidget and
osg::CompositeViewer..In the constructor I got gView which is a
osg::GLWidget, I am trying override mousePressEvent but when I click
message not coming. What I am doing wrong pls help..
[snip]
osg::Camera* ViewerWidget::createCamera( int x, int y, int w, int h,
const std::string name, bool windowDecoration )
{
osg::DisplaySettings* ds = osg::DisplaySettings::instance().get();
osg::ref_ptrosg::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_ptrosg::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_castdouble(traits-width)/static_castdouble(traits-height), 1.0f,
1.0f );
return camera.release();
}
I don't know why this code didn't crash, I think it should. Anyway, you
should create an instance of the CSGraphicsView somewhere within
createCamera:
CSGraphicsView* gView = new CSGraphicsView;
gView-setGeometry(x, y, w, h);
traits-inheritedWindowData = new osgQt::GraphicsWindowQt::WindowData(
gView );
...
or you can pass an instance of the CSGraphicsView to the
osgQt::GraphicsWindowQt constructor.
Robert Milharcic
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Re: [osg-users] MousepressEvent not able to capture from osg::Viewer by Qt
Thanks Robert. It is working fine...
On the left mouse press I am showing a message using QMessagBox. But on the
middle mouse press was having pan and right mouse press was having zoom in
zoom out. How can I retain those functionalities. With this these
functionalities are gone.
void CSGraphicsView::mousePressEvent(QMouseEvent *e)
{
if(e-button()==Qt::LeftButton)
{
QMessageBox msg;
msg.setText(Mouse pressed);
msg.exec();
}
}
On Wed, May 8, 2013 at 3:59 PM, Robert Milharcic
robert.milhar...@ib-caddy.si wrote:
On 8.5.2013 7:04, Sujan Dasmahapatra wrote:
I am trying to implement a mouse press event with QT and OSG but unable
to do it. Pls help.
Below is my ViewerWidget class which is derived from QWidget and
osg::CompositeViewer..In the constructor I got gView which is a
osg::GLWidget, I am trying override mousePressEvent but when I click
message not coming. What I am doing wrong pls help..
[snip]
osg::Camera* ViewerWidget::createCamera( int x, int y, int w, int h,
const std::string name, bool windowDecoration )
{
osg::DisplaySettings* ds = osg::DisplaySettings::**
instance().get();
osg::ref_ptrosg::**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_ptrosg::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-**setProjectionMatrixAsPerspecti**ve(
30.0f, static_castdouble(traits-**
width)/static_castdouble(**traits-height), 1.0f, 1.0f );
return camera.release();
}
I don't know why this code didn't crash, I think it should. Anyway, you
should create an instance of the CSGraphicsView somewhere within
createCamera:
CSGraphicsView* gView = new CSGraphicsView;
gView-setGeometry(x, y, w, h);
traits-inheritedWindowData = new osgQt::GraphicsWindowQt::**WindowData(
gView );
...
or you can pass an instance of the CSGraphicsView to the
osgQt::GraphicsWindowQt constructor.
Robert Milharcic
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Thanks Regards
Sujan
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Re: [osg-users] MousepressEvent not able to capture from osg::Viewer by Qt
On 8.5.2013 10:16, Sujan Dasmahapatra wrote:
Thanks Robert. It is working fine...
On the left mouse press I am showing a message using QMessagBox. But
on the middle mouse press was having pan and right mouse press was
having zoom in zoom out. How can I retain those functionalities. With
this these functionalities are gone.
void CSGraphicsView::mousePressEvent(QMouseEvent *e)
{
if(e-button()==Qt::LeftButton)
{
QMessageBox msg;
msg.setText(Mouse pressed);
msg.exec();
}
}
Call base class implementation in a case where you need to retain
original functionality:
void CSGraphicsView::mousePressEvent(QMouseEvent *e)
{
if(e-button()==Qt::LeftButton)
{
QMessageBox msg;
msg.setText(Mouse pressed);
msg.exec();
}
else
GLWidget::mousePressEvent(e);
}
Also, calling frame on paintEvent might not be enough. You should also
call frame on every user input, on all mouse and keyboard events for
example... or you can mount a QTimer and make it call frame at some
interval.
Robert Milharcic
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Re: [osg-users] MousepressEvent not able to capture from osg::Viewer by Qt
Thats right Robert. Thanks a lot for your suggestions I appreciate it.
Thanks Sujan
On Wed, May 8, 2013 at 5:40 PM, Robert Milharcic
robert.milhar...@ib-caddy.si wrote:
On 8.5.2013 10:16, Sujan Dasmahapatra wrote:
Thanks Robert. It is working fine...
On the left mouse press I am showing a message using QMessagBox. But on
the middle mouse press was having pan and right mouse press was having zoom
in zoom out. How can I retain those functionalities. With this these
functionalities are gone.
void CSGraphicsView::mousePressEvent(QMouseEvent *e)
{
if(e-button()==Qt::LeftButton)
{
QMessageBox msg;
msg.setText(Mouse pressed);
msg.exec();
}
}
Call base class implementation in a case where you need to retain
original functionality:
void CSGraphicsView::mousePressEvent(QMouseEvent *e)
{
if(e-button()==Qt::LeftButton)
{
QMessageBox msg;
msg.setText(Mouse pressed);
msg.exec();
}
else
GLWidget::mousePressEvent(e);
}
Also, calling frame on paintEvent might not be enough. You should also
call frame on every user input, on all mouse and keyboard events for
example... or you can mount a QTimer and make it call frame at some
interval.
Robert Milharcic
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--
Thanks Regards
Sujan
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[osg-users] MousepressEvent not able to capture from osg::Viewer by Qt
I am trying to implement a mouse press event with QT and OSG but unable to
do it. Pls help.
Below is my ViewerWidget class which is derived from QWidget and
osg::CompositeViewer..In the constructor I got gView which is a
osg::GLWidget, I am trying override mousePressEvent but when I click
message not coming. What I am doing wrong pls help..
My gView pointer is of class CSGraphicsView as below
/
#ifndef GVIEW_H
#define GVIEW_H
#include osg\GraphicsContext
#include osgQt\GraphicsWindowQt
#include QtGui\qwidget.h
#include QtCore\qobject.h
#include QtGui\qmouseeventtransition.h
class CSGraphicsView : public osgQt::GLWidget
{
public:
CSGraphicsView(QWidget* parent=0);
~CSGraphicsView();
virtual void mousePressEvent(QMouseEvent *e);
};
#endif // GVIEW_H
//Implementations is
void CSGraphicsView::mousePressEvent(QMouseEvent *e)
{
QMessageBox msg;
msg.setText(Mouse pressed);
msg.exec();
}//But this msg is not coming when i am pressing mouse.
/
/
ViewerWidget::ViewerWidget(osgViewer::ViewerBase::ThreadingModel
threadingModel, osg::Group* scene) : QWidget()
{
setThreadingModel(threadingModel);
gView = static_castCSGraphicsView* (addViewWidget(
createCamera(0,0,100,100), scene ));
QGridLayout* grid = new QGridLayout;
grid-addWidget( gView, 0, 0 );
setLayout( grid );
connect( _timer, SIGNAL(timeout()), this, SLOT(update()) );
_timer.start( 10 );
}
osgQt::GLWidget* ViewerWidget::addViewWidget( osg::Camera* camera,
osg::Group* 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 );
gw = dynamic_castosgQt::GraphicsWindowQt* (
camera-getGraphicsContext() );
return gw ? gw-getGLWidget() : NULL;
}
osg::Camera* ViewerWidget::createCamera( int x, int y, int w, int h, const
std::string name, bool windowDecoration )
{
osg::DisplaySettings* ds = osg::DisplaySettings::instance().get();
osg::ref_ptrosg::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_ptrosg::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_castdouble(traits-width)/static_castdouble(traits-height),
1.0f, 1.0f );
return camera.release();
}
void ViewerWidget::paintEvent( QPaintEvent* event )
{
frame();
}
/
--
Thanks Regards
Sujan
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