Initial file load for the QGIS Clipboard - enabler of a future commit for cut / copy / paste of features.

git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@3488 c8812cc2-4d05-0410-92ff-de0c093fc19c

src/qgsclipboard.cpp

@@ -0,0 +1,78 @@
+/***************************************************************************
+     qgsclipboard.cpp  -  QGIS internal clipboard for storage of features 
+     --------------------------------------------------------------------
+    begin                : 20 May, 2005
+    copyright            : (C) 2005 by Brendan Morley
+    email                : morb at ozemail dot com dot au
+ ***************************************************************************/
+
+/***************************************************************************
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ ***************************************************************************/
+
+/* $Id$ */
+
+#include <fstream>
+#include <iostream>
+
+#include "qgsclipboard.h"
+
+
+QgsClipboard::QgsClipboard()
+  : mFeatureClipboard(0)
+{
+}
+
+QgsClipboard::~QgsClipboard()
+{
+}
+
+void QgsClipboard::replaceWithCopyOf( std::vector<QgsFeature> features )
+{
+
+  mFeatureClipboard = features;
+#ifdef QGISDEBUG
+        std::cerr << "QgsClipboard::replaceWith: replaced clipboard."
+                  << std::endl;
+#endif
+
+}
+
+std::vector<QgsFeature> QgsClipboard::copyOf()
+{
+
+#ifdef QGISDEBUG
+        std::cerr << "QgsClipboard::copyOf: returning clipboard."
+                  << std::endl;
+#endif
+  
+  return mFeatureClipboard;
+  
+}
+
+void QgsClipboard::clear()
+{
+  
+  mFeatureClipboard.clear();
+
+#ifdef QGISDEBUG
+        std::cerr << "QgsClipboard::clear: cleared clipboard."
+                  << std::endl;
+#endif
+}
+  
+void QgsClipboard::insert( QgsFeature& feature )
+{
+  mFeatureClipboard.push_back(feature);
+#ifdef QGISDEBUG
+        std::cerr << "QgsClipboard::insert: inserted " << feature.geometry()->wkt()
+                  << std::endl;
+#endif
+
+}
+ 

src/qgsclipboard.h

@@ -0,0 +1,91 @@
+/***************************************************************************
+      qgsclipboard.h  -  QGIS internal clipboard for storage of features 
+      ------------------------------------------------------------------
+    begin                : 20 May, 2005
+    copyright            : (C) 2005 by Brendan Morley
+    email                : morb at ozemail dot com dot au
+ ***************************************************************************/
+
+/***************************************************************************
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ ***************************************************************************/
+ 
+/* $Id$ */
+
+#ifndef QGSCLIPBOARD_H
+#define QGSCLIPBOARD_H
+
+#include <vector>
+
+#include "qgsfeature.h"
+
+/**
+
+  \brief QGIS internal clipboard for features.
+ 
+  An internal clipboard is required so that features can be retained in
+  their original fidelity.
+  
+  The internal clipboard makes a copy of features that are presented to it,
+  therefore the original objects can safely be destructed independent of
+  the lifetime of the internal clipboard.
+  
+  As this class matures it should also be able to accept CSV repesentations
+  of features in and out of the system clipboard (QClipboard).
+  
+  TODO: Make it work
+  
+*/
+
+class QgsClipboard
+{
+  
+
+public:
+  
+ 
+  /**
+  * Constructor for the clipboard. 
+  */
+  QgsClipboard();
+
+  //! Destructor
+  virtual ~QgsClipboard();
+  
+  /*
+   *  Place a copy of features on the internal clipboard, 
+   *  destroying the previous contents.
+   */
+  void replaceWithCopyOf( std::vector<QgsFeature> features );
+
+  /*
+   *  Returns a copy of features on the internal clipboard, 
+   *  the caller assumes responsibility fot destroying the contents
+   *  when it's done with it.
+   */
+  std::vector<QgsFeature> copyOf();
+  
+  /*
+   *  Clears the internal clipboard.
+   */
+  void clear();
+  
+  /*
+   *  Inserts a copy of the feature on the internal clipboard.
+   */
+  void insert( QgsFeature& feature );
+ 
+    
+private:
+
+    /** QGIS-internal vector feature clipboard */
+    std::vector<QgsFeature> mFeatureClipboard;
+
+};
+
+#endif