#include <GraphicsView.hxx>

Inheritance diagram for YACS::HMI::GraphicsView:

Collaboration diagram for YACS::HMI::GraphicsView:

Public Slots
virtual void	onViewFitAll ()

virtual void	onViewFitArea ()

virtual void	onViewZoom ()

virtual void	onViewPan ()

virtual void	onViewGlobalPan ()

virtual void	onViewReset ()

virtual void	onZoomToBloc ()

virtual void	onCenterOnNode ()

Public Slots inherited from YACS::HMI::WrapGraphicsView
virtual void	onViewFitAll ()

virtual void	onViewFitArea ()

virtual void	onViewZoom ()

virtual void	onViewPan ()

virtual void	onViewGlobalPan ()

virtual void	onViewReset ()

Public Member Functions
	GraphicsView (QWidget *parent=0)

virtual	~GraphicsView ()

Public Member Functions inherited from YACS::HMI::WrapGraphicsView
	WrapGraphicsView (QWidget *parent=0)

virtual	~WrapGraphicsView ()

Protected Member Functions
void	contextMenuEvent (QContextMenuEvent *event)

void	mouseMoveEvent (QMouseEvent *e)

void	mousePressEvent (QMouseEvent *e)

void	mouseReleaseEvent (QMouseEvent *e)

virtual void	wheelEvent (QWheelEvent *e)

Protected Attributes
bool	_zooming

bool	_fittingArea

bool	_panning

int	_prevX

int	_prevY

qreal	_scale

QPoint	_prevPos

QGraphicsRectItem *	_rect

Detailed Description

Definition at line 33 of file GraphicsView.hxx.

Constructor & Destructor Documentation

GraphicsView::GraphicsView ( QWidget * parent = 0 )

Definition at line 41 of file GraphicsView.cxx.

References _fittingArea, _panning, _rect, and _zooming.

   : WrapGraphicsView(parent)
 {
   _zooming = false;
   _fittingArea = false;
   _panning = false;
   _rect = 0;
   setTransformationAnchor(QGraphicsView::AnchorViewCenter);
 }

GraphicsView::~GraphicsView ( )

virtual

Definition at line 51 of file GraphicsView.cxx.

52 {

53 }

Member Function Documentation

void GraphicsView::contextMenuEvent ( QContextMenuEvent * event )

protected

Definition at line 103 of file GraphicsView.cxx.

References YACS::HMI::SceneTextItem::popupMenu(), YACS::HMI::SceneItem::popupMenu(), YACS::HMI::SceneTextItem::setEventPos(), and YACS::HMI::SceneItem::setEventPos().

 {
   QGraphicsItem *qgitem = itemAt(event->pos());
   if (qgitem)
     {
       SceneItem *item = dynamic_cast<SceneItem*>(qgitem);
       if (item)
         {
           QPointF point = mapToScene(event->pos());
           item->setEventPos(point);
           item->popupMenu(this, event->globalPos());
         }
       else
         {
           SceneTextItem *item = dynamic_cast<SceneTextItem*>(qgitem);
           if (item)
             {
               QPointF point = mapToScene(event->pos());
               item->setEventPos(point);
               item->popupMenu(this, event->globalPos());
             }
         }
     }
 }

void GraphicsView::mouseMoveEvent ( QMouseEvent * e )

protected

Definition at line 128 of file GraphicsView.cxx.

References _fittingArea, _panning, _prevPos, _prevX, _prevY, _rect, _scale, and _zooming.

 {
   WrapGraphicsView::mouseMoveEvent(e);
   if (e->buttons()==Qt::LeftButton)
     {
       QPoint current = e->pos();
       if (_zooming)
         {
           qreal currentX = e->globalX();
           qreal currentY = e->globalY();
           qreal delta = sqrt((currentX - _prevX)*(currentX - _prevX) + (currentY - _prevY)*(currentY - _prevY));
           if ((currentX*currentX + currentY*currentY) < (_prevX*_prevX + _prevY*_prevY))
             delta = -delta;
           _prevX = currentX;
           _prevY = currentY;
           //       if (delta < -30) delta = -30;
           //       if (delta >  30) delta =  30;
           double deltax = delta/900.;
           double zoom = exp(deltax);
           _scale = _scale*zoom;
           scale(zoom,zoom);
           //DEBTRACE("move zooming " << delta << " " << deltax << " " << zoom);
         }
       else if (_panning)
         {
           translate(current.x() - _prevPos.x(), current.y() - _prevPos.y());
           //DEBTRACE(current.x()<<"-"<<_prevPos.x()<<" "<<current.y()<<"-"<<_prevPos.y());
           _prevPos = current;
         }
       else if (_fittingArea)
         {
           if (!_rect)
             {
               _rect = scene()->addRect(QGraphicsView::mapToScene(QRect(_prevPos, current)).boundingRect());
               _rect->setZValue(100000);
               _rect->setParentItem(0);
             }
           else
             {
               _rect->setRect(QGraphicsView::mapToScene(QRect(_prevPos, current)).boundingRect());
               _rect->show();
             }
         }
     }
 }

void GraphicsView::mousePressEvent ( QMouseEvent * e )

protected

Definition at line 174 of file GraphicsView.cxx.

References _fittingArea, _panning, _prevPos, _prevX, _prevY, _zooming, DEBTRACE, YACS::HMI::QtGuiContext::getGMain(), YACS::HMI::QtGuiContext::getQtCurrent(), and YACS::HMI::GenericGui::switchContext().

 {
   DEBTRACE("GraphicsView::mousePressEvent");
   if (QtGuiContext::getQtCurrent()->getView() != this)
     {
       DEBTRACE("Switch context before selection");
       QtGuiContext::getQtCurrent()->getGMain()->switchContext(this->parentWidget());
     }
   WrapGraphicsView::mousePressEvent(e);
   if (_zooming)
     {
       _prevX = e->globalX();
       _prevY = e->globalY();
     }
   else if (_fittingArea)
     {
       _prevPos = e->pos();
     }
     else if (_panning)
       {
         _prevPos = e->pos();
         //setDragMode(QGraphicsView::ScrollHandDrag);
       }
 }

void GraphicsView::mouseReleaseEvent ( QMouseEvent * e )

protected

Definition at line 199 of file GraphicsView.cxx.

References _fittingArea, _panning, _prevPos, _rect, _zooming, and DEBTRACE.

 {
   _zooming = false;
   _panning = false;
   setDragMode(QGraphicsView::NoDrag);
   setTransformationAnchor(QGraphicsView::AnchorViewCenter);
   if( _fittingArea)
     {
       _fittingArea = false;
       QPoint current = e->pos();
       fitInView(QGraphicsView::mapToScene(QRect(_prevPos, current)).boundingRect(), Qt::KeepAspectRatio);
       if (_rect)
         _rect->hide();
     }
 
   QTransform q = transform();
   DEBTRACE(q.m11()<<" "<<q.m12()<<" "<<q.m21()<<" "<<q.m22()<<" "<<q.dx()<<" "<<q.dy());
   WrapGraphicsView::mouseReleaseEvent(e);
 }

void GraphicsView::onCenterOnNode ( )

virtualslot

Definition at line 244 of file GraphicsView.cxx.

References YACS::HMI::QtGuiContext::_mapOfSceneItem, YACS::HMI::QtGuiContext::getQtCurrent(), and YACS::HMI::QtGuiContext::getSelectedSubject().

 {
   Subject *sub =QtGuiContext::getQtCurrent()->getSelectedSubject();
   SubjectNode *snode = dynamic_cast<SubjectNode*>(sub);
   if (!snode)
     return;
   SceneItem *item = QtGuiContext::getQtCurrent()->_mapOfSceneItem[sub];
   centerOn(item);
 }

void GraphicsView::onViewFitAll ( )

virtualslot

Definition at line 55 of file GraphicsView.cxx.

References YACS::HMI::QtGuiContext::_mapOfSceneItem, YACS::HMI::SceneItem::boundingRect(), DEBTRACE, YACS::HMI::QtGuiContext::getQtCurrent(), and YACS::HMI::GuiContext::getSubjectProc().

 {
   DEBTRACE("GraphicsView::onViewFitAll");
   SubjectProc *sProc = QtGuiContext::getQtCurrent()->getSubjectProc();
   SceneItem *item = QtGuiContext::getQtCurrent()->_mapOfSceneItem[sProc];
   //SceneProcItem *procItem = dynamic_cast<SceneProcItem*>(item);
   fitInView(item->boundingRect(),  Qt::KeepAspectRatio);
 }

void GraphicsView::onViewFitArea ( )

virtualslot

Definition at line 64 of file GraphicsView.cxx.

References _fittingArea, DEBTRACE, and YACS::HMI::Scene::setZoom().

 {
   DEBTRACE("GraphicsView::onViewFitArea");
   Scene* myScene = dynamic_cast<Scene*>(scene());
   myScene->setZoom(true);
   _fittingArea = true;
 }

void GraphicsView::onViewGlobalPan ( )

virtualslot

Definition at line 91 of file GraphicsView.cxx.

References DEBTRACE.

 {
   DEBTRACE("GraphicsView::onViewGlobalPan");
 }

void GraphicsView::onViewPan ( )

virtualslot

Definition at line 81 of file GraphicsView.cxx.

References _panning, DEBTRACE, and YACS::HMI::Scene::setZoom().

 {
   DEBTRACE("GraphicsView::onViewPan");
   Scene* myScene = dynamic_cast<Scene*>(scene());
   myScene->setZoom(true);
   _panning = true;
   //setTransformationAnchor(QGraphicsView::AnchorUnderMouse);
   setTransformationAnchor(QGraphicsView::NoAnchor);
 }

void GraphicsView::onViewReset ( )

virtualslot

Definition at line 96 of file GraphicsView.cxx.

References DEBTRACE.

 {
   DEBTRACE("GraphicsView::onViewReset");
   resetTransform();
 }

void GraphicsView::onViewZoom ( )

virtualslot

Definition at line 72 of file GraphicsView.cxx.

References _scale, _zooming, DEBTRACE, and YACS::HMI::Scene::setZoom().

 {
   DEBTRACE("GraphicsView::onViewZoom");
   Scene* myScene = dynamic_cast<Scene*>(scene());
   myScene->setZoom(true);
   _zooming =true;
   _scale = 1;
 }

void GraphicsView::onZoomToBloc ( )

virtualslot

Definition at line 228 of file GraphicsView.cxx.

References YACS::HMI::QtGuiContext::_mapOfSceneItem, YACS::HMI::SceneItem::boundingRect(), YACS::HMI::Subject::getParent(), YACS::HMI::QtGuiContext::getQtCurrent(), YACS::HMI::QtGuiContext::getSelectedSubject(), and YASSERT.

 {
   Subject *sub = QtGuiContext::getQtCurrent()->getSelectedSubject();
   SubjectNode *snode = dynamic_cast<SubjectNode*>(sub);
   if (!snode)
     return;
   SubjectComposedNode *scnode = dynamic_cast<SubjectComposedNode*>(sub);
   if (!scnode)
     scnode = dynamic_cast<SubjectComposedNode*>(snode->getParent());
   YASSERT(scnode);
   SceneItem *item = QtGuiContext::getQtCurrent()->_mapOfSceneItem[scnode];
   YASSERT(item);
   QRectF rect = item->mapToScene(item->boundingRect().toRect()).boundingRect();
   fitInView(rect.toRect(), Qt::KeepAspectRatio);
 }

void GraphicsView::wheelEvent ( QWheelEvent * e )

protectedvirtual

Definition at line 219 of file GraphicsView.cxx.

References _scale, and DEBTRACE.

 {
   DEBTRACE("GraphicsView::wheelEvent " << e->delta());
   double zoom = exp(0.1*e->delta()/120);
   _scale = _scale*zoom;
   setTransformationAnchor(QGraphicsView::AnchorUnderMouse);
   scale(zoom,zoom);
 }