YACS::HMI::GraphicsView Class Reference

#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::GraphicsView

(

QWidget *

parent = 0

)

Definition at line 41 of file GraphicsView.cxx.

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

References _fittingArea, _panning, _rect, and _zooming.

~GraphicsView()

GraphicsView::~GraphicsView ( )

virtual

Definition at line 51 of file GraphicsView.cxx.

{
}

Member Function Documentation

contextMenuEvent()

void GraphicsView::contextMenuEvent ( QContextMenuEvent *  event )

protected

Definition at line 103 of file GraphicsView.cxx.

{
  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());
            }
        }
    }
}

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

mouseMoveEvent()

void GraphicsView::mouseMoveEvent ( QMouseEvent *  e )

protected

Definition at line 128 of file GraphicsView.cxx.

{
  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();
            }
        }
    }
}

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

mousePressEvent()

void GraphicsView::mousePressEvent ( QMouseEvent *  e )

protected

Definition at line 174 of file GraphicsView.cxx.

{
  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);
      }
}

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

mouseReleaseEvent()

void GraphicsView::mouseReleaseEvent ( QMouseEvent *  e )

protected

Definition at line 199 of file GraphicsView.cxx.

{
  _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);
}

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

onCenterOnNode

void GraphicsView::onCenterOnNode ( )

virtualslot

Definition at line 244 of file GraphicsView.cxx.

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

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

Referenced by YACS::HMI::GenericGui::onCenterOnNode().

onViewFitAll

void GraphicsView::onViewFitAll ( )

virtualslot

Definition at line 55 of file GraphicsView.cxx.

{
  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);
}

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

onViewFitArea

void GraphicsView::onViewFitArea ( )

virtualslot

Definition at line 64 of file GraphicsView.cxx.

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

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

onViewGlobalPan

void GraphicsView::onViewGlobalPan ( )

virtualslot

Definition at line 91 of file GraphicsView.cxx.

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

References DEBTRACE.

onViewPan

void GraphicsView::onViewPan ( )

virtualslot

Definition at line 81 of file GraphicsView.cxx.

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

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

onViewReset

void GraphicsView::onViewReset ( )

virtualslot

Definition at line 96 of file GraphicsView.cxx.

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

References DEBTRACE.

onViewZoom

void GraphicsView::onViewZoom ( )

virtualslot

Definition at line 72 of file GraphicsView.cxx.

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

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

onZoomToBloc

void GraphicsView::onZoomToBloc ( )

virtualslot

Definition at line 228 of file GraphicsView.cxx.

{
  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);
}

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

Referenced by YACS::HMI::GenericGui::onZoomToBloc().

wheelEvent()

void GraphicsView::wheelEvent ( QWheelEvent *  e )

protectedvirtual

Definition at line 219 of file GraphicsView.cxx.

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

References _scale, and DEBTRACE.

Member Data Documentation

_fittingArea

bool YACS::HMI::GraphicsView::_fittingArea

protected

Definition at line 60 of file GraphicsView.hxx.

Referenced by GraphicsView(), mouseMoveEvent(), mousePressEvent(), mouseReleaseEvent(), and onViewFitArea().

_panning

bool YACS::HMI::GraphicsView::_panning

protected

Definition at line 61 of file GraphicsView.hxx.

Referenced by GraphicsView(), mouseMoveEvent(), mousePressEvent(), mouseReleaseEvent(), and onViewPan().

_prevPos

QPoint YACS::HMI::GraphicsView::_prevPos

protected

Definition at line 65 of file GraphicsView.hxx.

Referenced by mouseMoveEvent(), mousePressEvent(), and mouseReleaseEvent().

_prevX

int YACS::HMI::GraphicsView::_prevX

protected

Definition at line 62 of file GraphicsView.hxx.

Referenced by mouseMoveEvent(), and mousePressEvent().

_prevY

int YACS::HMI::GraphicsView::_prevY

protected

Definition at line 63 of file GraphicsView.hxx.

Referenced by mouseMoveEvent(), and mousePressEvent().

_rect

QGraphicsRectItem* YACS::HMI::GraphicsView::_rect

protected

Definition at line 66 of file GraphicsView.hxx.

Referenced by GraphicsView(), mouseMoveEvent(), and mouseReleaseEvent().

_scale

qreal YACS::HMI::GraphicsView::_scale

protected

Definition at line 64 of file GraphicsView.hxx.

Referenced by mouseMoveEvent(), onViewZoom(), and wheelEvent().

_zooming

bool YACS::HMI::GraphicsView::_zooming

protected

Definition at line 59 of file GraphicsView.hxx.

Referenced by GraphicsView(), mouseMoveEvent(), mousePressEvent(), mouseReleaseEvent(), and onViewZoom().

---

The documentation for this class was generated from the following files:

• src/genericgui/GraphicsView.hxx
• src/genericgui/GraphicsView.cxx