Collaboration diagram for osgEarth::Util::Controls::ViewportHandler:

Public Member Functions
	ViewportHandler (ControlCanvas *cs)
bool	handle (const osgGA::GUIEventAdapter &ea, osgGA::GUIActionAdapter &aa)
Public Attributes
ControlCanvas *	_cs
int	_width
int	_height
bool	_first

Detailed Description

Definition at line 1711 of file Controls.cpp.

Constructor & Destructor Documentation

osgEarth::Util::Controls::ViewportHandler::ViewportHandler ( ControlCanvas * cs ) [inline]

Definition at line 1713 of file Controls.cpp.

: _cs(cs), _width(0), _height(0), _first(true) { }

Member Function Documentation

bool osgEarth::Util::Controls::ViewportHandler::handle	(	const osgGA::GUIEventAdapter &	ea,
		osgGA::GUIActionAdapter &	aa
	)		`[inline]`

Definition at line 1715 of file Controls.cpp.

        {
            if ( ea.getEventType() == osgGA::GUIEventAdapter::RESIZE || _first )
            {
                osg::Camera* cam = aa.asView()->getCamera();
                if ( cam && cam->getViewport() )
                {
                    const osg::Viewport* vp = cam->getViewport();
                    if ( _first || vp->width() != _width || vp->height() != _height )
                    {
                        _cs->setProjectionMatrix(osg::Matrix::ortho2D( 0, vp->width()-1, 0, vp->height()-1 ) );

                        ControlContext cx;
                        cx._view = aa.asView();
                        cx._vp = new osg::Viewport( 0, 0, vp->width(), vp->height() );
                        cx._viewContextID = aa.asView()->getCamera()->getGraphicsContext()->getState()->getContextID();
                        _cs->setControlContext( cx );

                        _width  = (int)vp->width();
                        _height = (int)vp->height();
                    }
                    if ( vp->width() != 0 && vp->height() != 0 )
                    {
                        _first = false;
                    }
                }
            }
            return false;
        }