GraphicsItemsExtractor Class Reference

This class consolidates utility routines that deal with graphics items that are getting extracted from the scene. More...

#include <GraphicsItemsExtractor.h>

Collaboration diagram for GraphicsItemsExtractor:

Public Member Functions
	GraphicsItemsExtractor ()
	Single constructor.
	~GraphicsItemsExtractor ()
bool	allSelectedItemsAreEitherAxisOrGraph (const QList< QGraphicsItem * > &items, AxisOrGraph axisOrGraph) const
	Return true if all selected points are of the specified axis or graph type.
QStringList	selectedPointIdentifiers (const QList< QGraphicsItem * > &items) const
	Return list of selected point identifiers.

Detailed Description

This class consolidates utility routines that deal with graphics items that are getting extracted from the scene.

Definition at line 20 of file GraphicsItemsExtractor.h.

Constructor & Destructor Documentation

GraphicsItemsExtractor()

GraphicsItemsExtractor::GraphicsItemsExtractor

(

)

Single constructor.

Definition at line 15 of file GraphicsItemsExtractor.cpp.

{
}

~GraphicsItemsExtractor()

GraphicsItemsExtractor::~GraphicsItemsExtractor

(

)

Definition at line 19 of file GraphicsItemsExtractor.cpp.

{
}

Member Function Documentation

allSelectedItemsAreEitherAxisOrGraph()

bool GraphicsItemsExtractor::allSelectedItemsAreEitherAxisOrGraph	(	const QList< QGraphicsItem * > &	items,
		AxisOrGraph	axisOrGraph ) const

Return true if all selected points are of the specified axis or graph type.

Definition at line 23 of file GraphicsItemsExtractor.cpp.

{
  bool allAreEitherAxisOrGraph = true;
 
  QList<QGraphicsItem*>::const_iterator itr;
  for (itr = items.begin(); itr != items.end(); itr++) {
 
    QGraphicsItem *item = *itr;
    GraphicsItemType type = static_cast<GraphicsItemType> (item->data (DATA_KEY_GRAPHICS_ITEM_TYPE).toInt ());
 
    if (type == GRAPHICS_ITEM_TYPE_POINT) {
 
      QString pointIdentifier = item->data (DATA_KEY_IDENTIFIER).toString ();
      QString curveName = Point::curveNameFromPointIdentifier (pointIdentifier);
 
      bool unwantedAxisPoint = ((curveName == AXIS_CURVE_NAME) && (axisOrGraph == GRAPH_POINTS));
      bool unwantedCurvePoint = ((curveName != AXIS_CURVE_NAME) && (axisOrGraph == AXIS_POINTS));
 
      if (unwantedAxisPoint || unwantedCurvePoint) {
 
        allAreEitherAxisOrGraph = false;
        break;
 
      }
    } else {
 
      allAreEitherAxisOrGraph = false;
      break;
 
    }
  }
 
  return allAreEitherAxisOrGraph;
}

selectedPointIdentifiers()

QStringList GraphicsItemsExtractor::selectedPointIdentifiers

(

const QList< QGraphicsItem * > &

items

)

const

Return list of selected point identifiers.

Definition at line 59 of file GraphicsItemsExtractor.cpp.

{
  LOG4CPP_INFO_S ((*mainCat)) << "GraphicsScene::selectedPointIdentifiers"
                              << " selectedItems=" << items.count();
 
  QStringList selectedIds;
  QList<QGraphicsItem*>::const_iterator itr;
  for (itr = items.begin(); itr != items.end(); itr++) {
 
    const QGraphicsItem* item = *itr;
 
    // Skip the image and only keep the Points
    bool isPoint = (item->data (DATA_KEY_GRAPHICS_ITEM_TYPE).toInt () == GRAPHICS_ITEM_TYPE_POINT);
    if (isPoint) {
 
      // Add Point to the list
      selectedIds << item->data(DATA_KEY_IDENTIFIER).toString ();
 
    }
  }
 
  return  selectedIds;
}

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

• Graphics/GraphicsItemsExtractor.h
• Graphics/GraphicsItemsExtractor.cpp