- Visualize the Component origin with cross.

OpenModelica · May 25, 2015 · f77f376 · f77f376
1 parent 5dfb4ea
commit f77f376
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Showing 4 changed files with 75 additions and 2 deletions.
diff --git a/OMEdit/OMEditGUI/Component/Component.cpp b/OMEdit/OMEditGUI/Component/Component.cpp
@@ -76,11 +76,14 @@ Component::Component(QString annotation, QString name, QString className, Compon
   }
   setTransform(mpTransformation->getTransformationMatrix());
   createActions();
+  mpOriginItem = new OriginItem();
   createResizerItems();
   setToolTip(QString("<b>").append(mClassName).append("</b> ").append(mName));
   // if everything is fine with icon then add it to scene
   mpGraphicsView->scene()->addItem(this);
+  mpGraphicsView->scene()->addItem(mpOriginItem);
   connect(this, SIGNAL(componentTransformHasChanged()), SLOT(updatePlacementAnnotation()));
+  connect(this, SIGNAL(componentTransformHasChanged()), SLOT(updateOriginItem()));
 }
 
 /* Called for inheritance annotation instance */
@@ -173,7 +176,7 @@ void Component::initialize()
   mpCoOrdinateSystem->setGrid(QPointF(2, 2));
   //Construct the temporary polygon that is used when scaling
   mpResizerRectangle = new QGraphicsRectItem;
-  mpResizerRectangle->setZValue(3000);  // set to a very high value
+  mpResizerRectangle->setZValue(4000);  // set to a very high value
   if (mpGraphicsView) mpGraphicsView->scene()->addItem(mpResizerRectangle);
   QPen pen;
   pen.setStyle(Qt::DotLine);
@@ -475,6 +478,11 @@ void Component::getResizerItemsPositions(qreal *x1, qreal *y1, qreal *x2, qreal
 
 void Component::showResizerItems()
 {
+  // show the origin item
+  if (mpTransformation->hasOrigin()) {
+    mpOriginItem->setPos(mpTransformation->getOrigin());
+    mpOriginItem->setActive();
+  }
   qreal x1, y1, x2, y2;
   getResizerItemsPositions(&x1, &y1, &x2, &y2);
   //Bottom left resizer
@@ -493,6 +501,7 @@ void Component::showResizerItems()
 
 void Component::hideResizerItems()
 {
+  mpOriginItem->setPassive();
   mpBottomLeftResizerItem->setPassive();
   mpTopLeftResizerItem->setPassive();
   mpTopRightResizerItem->setPassive();
@@ -930,6 +939,17 @@ void Component::updatePlacementAnnotation()
   }
 }
 
+/*!
+ * \brief Component::updateOriginItem
+ * Slot that updates the position of the component OriginItem.
+ */
+void Component::updateOriginItem()
+{
+  if (mpTransformation->hasOrigin()) {
+    mpOriginItem->setPos(mpTransformation->getOrigin());
+  }
+}
+
 void Component::prepareResizeComponent(ResizerItem *pResizerItem)
 {
   mpSelectedResizerItem = pResizerItem;

diff --git a/OMEdit/OMEditGUI/Component/Component.h b/OMEdit/OMEditGUI/Component/Component.h
@@ -162,6 +162,7 @@ class Component : public QObject, public QGraphicsItem
   ResizerItem *mpTopRightResizerItem;
   ResizerItem *mpBottomRightResizerItem;
   ResizerItem *mpSelectedResizerItem;
+  OriginItem *mpOriginItem;
   QTransform mTransform;
   QRectF mSceneBoundingRect;
   QPointF mTransformationStartPosition;
@@ -182,6 +183,7 @@ class Component : public QObject, public QGraphicsItem
   void componentRotationChange();
 public slots:
   void updatePlacementAnnotation();
+  void updateOriginItem();
   void prepareResizeComponent(ResizerItem *pResizerItem);
   void resizeComponent(QPointF newPosition);
   void finishResizeComponent();

diff --git a/OMEdit/OMEditGUI/Component/CornerItem.cpp b/OMEdit/OMEditGUI/Component/CornerItem.cpp
@@ -180,7 +180,7 @@ QVariant CornerItem::itemChange(GraphicsItemChange change, const QVariant &value
   \brief Represents a red rectangle box around the Component.
   */
 /*!
-  \param pParent - pointer to QGraphicsItem.
+  \param pComponent - pointer to Component.
   */
 ResizerItem::ResizerItem(Component *pComponent)
   : QGraphicsItem(pComponent), mIsPressed(false)
@@ -313,3 +313,39 @@ void ResizerItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
     }
   }
 }
+
+/*!
+  \class OriginItem
+  \brief Represents a cross at the origin of the Component.
+  */
+/*!
+  \param pComponent - pointer to Component.
+  */
+OriginItem::OriginItem()
+{
+  setZValue(3000);
+  mActivePen = QPen(Qt::red, 2);
+  mActivePen.setCosmetic(true);
+  mPassivePen = QPen(Qt::transparent);
+  mRectangle = QRectF (-5, -5, 10, 10);
+  mPen = mPassivePen;
+}
+
+/*!
+  Reimplementation of paint.\n
+  Draws the cross shape for the OriginItem.
+  \param painter - pointer to QPainter
+  \param option - pointer to QStyleOptionGraphicsItem
+  \param widget - pointer to QWidget
+  */
+void OriginItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
+{
+  Q_UNUSED(option);
+  Q_UNUSED(widget);
+  painter->setRenderHint(QPainter::Antialiasing);
+  painter->setPen(mPen);
+  // draw horizontal Line
+  painter->drawLine(-2, 0, 2, 0);
+  // draw vertical Line
+  painter->drawLine(0, -2, 0, 2);
+}
diff --git a/OMEdit/OMEditGUI/Component/CornerItem.h b/OMEdit/OMEditGUI/Component/CornerItem.h
@@ -105,4 +105,19 @@ class ResizerItem : public QObject, public QGraphicsItem
   virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
 };
 
+class OriginItem : public QGraphicsItem
+{
+public:
+  OriginItem();
+  void setActive() {mPen = mActivePen;}
+  void setPassive() {mPen = mPassivePen;}
+  QRectF boundingRect() const {return mRectangle;}
+  void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);
+private:
+  QRectF mRectangle;
+  QPen mPen;
+  QPen mActivePen;
+  QPen mPassivePen;
+};
+
 #endif // CORNERITEM_H