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cxViewCache.h
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1 /*=========================================================================
2 This file is part of CustusX, an Image Guided Therapy Application.
3 
4 Copyright (c) 2008-2014, SINTEF Department of Medical Technology
5 All rights reserved.
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7 Redistribution and use in source and binary forms, with or without
8 modification, are permitted provided that the following conditions are met:
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11  this list of conditions and the following disclaimer.
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31 =========================================================================*/
32 
33 #ifndef CXVIEWCACHE_H_
34 #define CXVIEWCACHE_H_
35 
36 #include "cxResourceVisualizationExport.h"
37 
38 #include <QWidget>
39 #include <QLayout>
40 #include <vector>
41 #include "cxTypeConversions.h"
42 #include "cxOSXHelper.h"
43 
44 namespace cx
45 {
64 template<class VIEW_TYPE>
65 class cxResourceVisualization_EXPORT ViewCache
66 {
67 public:
68  ViewCache(QWidget* widget, QString typeText) :
69  mCentralWidget(widget), mNameGenerator(0), mTypeText(typeText)
70  {
71  }
74  VIEW_TYPE* retrieveView()
75  {
76  if (mCached.empty())
77  {
78  QString uid = QString("%1-%2-%3")
79  .arg(mTypeText)
80  .arg(mNameGenerator++)
81  .arg(reinterpret_cast<long>(this));
82  VIEW_TYPE* view = new VIEW_TYPE(uid, uid, mCentralWidget);
83  mCached.push_back(view);
84  }
85 
86  VIEW_TYPE* retval = mCached.back();
87  mCached.pop_back();
88  mUsed.push_back(retval);
89  return retval;
90  }
95  {
96  std::copy(mUsed.begin(), mUsed.end(), back_inserter(mCached));
97  mUsed.clear();
98  }
99 private:
100  QWidget* mCentralWidget;
101  int mNameGenerator;
102  QString mTypeText;
103  std::vector<VIEW_TYPE*> mCached;
104  std::vector<VIEW_TYPE*> mUsed;
105 };
106 
110 } // namespace cx
111 
112 #endif /* CXVIEWCACHE_H_ */
VIEW_TYPE * retrieveView()
Definition: cxViewCache.h:74
void clearUsedViews()
Definition: cxViewCache.h:94
ViewCache(QWidget *widget, QString typeText)
Definition: cxViewCache.h:68