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authorTimothy Pearson <kb9vqf@pearsoncomputing.net>2013-02-01 17:25:43 -0600
committerTimothy Pearson <kb9vqf@pearsoncomputing.net>2013-02-01 17:25:43 -0600
commit2d7591be424ae10d974d01e0e2f781d19ef07cd6 (patch)
tree1741ae0010f98f8b61722d42d7cbf3c86ae53063 /khexedit/lib/tdeselection.h
parent9e5c87c89567a98c3344c90e392a27715437334c (diff)
downloadtdeutils-2d7591be424ae10d974d01e0e2f781d19ef07cd6.tar.gz
tdeutils-2d7591be424ae10d974d01e0e2f781d19ef07cd6.zip
Fix FTBFS
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+/***************************************************************************
+ kbuffersection.h - description
+ -------------------
+ begin : 22.06.2003
+ copyright : (C) 2003 by Friedrich W. H. Kossebau
+ email : Friedrich.W.H@Kossebau.de
+****************************************************************************/
+
+/***************************************************************************
+ * *
+ * This library is free software; you can redistribute it and/or *
+ * modify it under the terms of the GNU Library General Public *
+ * License version 2 as published by the Free Software Foundation. *
+ * *
+ ***************************************************************************/
+
+
+#ifndef KHE_KSELECTION_H
+#define KHE_KSELECTION_H
+
+#include "ksection.h"
+
+namespace KHE
+{
+
+/** This class describes a selected section of the buffer.
+ * As it is used as selection controlled by
+ * mouse and keyboard commands it offers two ways to set its range:
+ * - by giving the startposition (of the cursor) of an interactive selection
+ * and the subsequent end positions (until selection is finished)
+ * - direct setting (as provided by KSection)
+ *
+ * the interactive selection takes care that
+ *
+ *@author Friedrich W. H. Kossebau
+ */
+class TDESelection : public KSection
+{
+ public:
+ /** creates a selection with a given start.
+ * @param Index index in front of which the selection begins
+ */
+ TDESelection( int Index );
+ /** creates an invalid selection */
+ TDESelection();
+ ~TDESelection();
+
+ public:
+ TDESelection &operator=( const TDESelection &S );
+ TDESelection &operator=( const KSection &S );
+
+ public: // modification access
+ /** starts the selection.
+ * For this the anchor, start and end are set to the given index,
+ * so the initial selection is empty.
+ * @param Index index in front of which the selection begins
+ */
+ void setStart( int Index );
+ /** sets the end of the current selection
+ * If the end is before the start the selection will reach from the given index
+ * @param Index index in front of which the selection ends
+ */
+ void setEnd( int Index );
+ /** sets the selection to be invalid
+ */
+ void cancel();
+ /** sets the anchor to the start
+ * If the selection has not started the behaviour is undefined.
+ */
+ void setForward();
+ /** sets the anchor to the end
+ * If the selection has not started the behaviour is undefined.
+ */
+ void setBackward();
+ /** swaps anchor from start to end or vice versa
+ * If the selection has not started the behaviour is undefined.
+ */
+ void reverse();
+
+ public: // value access
+ /**
+ * @return anchor value
+ */
+ int anchor() const;
+
+ public: // logic access
+ /**
+ * @return @c true if the anchor has been set, otherwise @c false.
+ */
+ bool started() const;
+ /**
+ * @return @c true if the anchor has been set and the selection is empty, otherwise @c false.
+ */
+ bool justStarted() const;
+ /**
+ * @return @c true if the anchor is at the begin of the selection
+ */
+ bool isForward() const;
+
+ protected:
+ /** cursor index where the selection starts */
+ int Anchor;
+};
+
+
+inline TDESelection::TDESelection() : Anchor( -1 ) {}
+inline TDESelection::TDESelection( int Index ) : Anchor( Index ) {}
+inline TDESelection::~TDESelection() {}
+
+inline TDESelection &TDESelection::operator=( const TDESelection &S )
+{
+ KSection::operator=(S);
+ Anchor = S.Anchor;
+ return *this;
+}
+
+inline TDESelection &TDESelection::operator=( const KSection &S )
+{
+ KSection::operator=(S);
+ Anchor = start();
+ return *this;
+}
+
+
+inline void TDESelection::setStart( int Index )
+{
+ Anchor = Index;
+ unset();
+}
+
+
+inline void TDESelection::setEnd( int Index )
+{
+ // nothing selected?
+ if( Index == Anchor )
+ unset();
+ // selecting forwards?
+ else if( Index > Anchor )
+ {
+ KSection::setStart( Anchor );
+ KSection::setEnd( Index-1 );
+ }
+ // selecting backwards
+ else
+ {
+ KSection::setStart( Index );
+ KSection::setEnd( Anchor-1 );
+ }
+}
+
+inline void TDESelection::reverse()
+{
+ Anchor = isForward() ? end()+1 : start();
+}
+
+inline void TDESelection::setForward()
+{
+ Anchor = start();
+}
+
+inline void TDESelection::setBackward()
+{
+ Anchor = end()+1;
+}
+
+inline int TDESelection::anchor() const { return Anchor; }
+
+inline void TDESelection::cancel() { Anchor = -1; unset(); }
+
+inline bool TDESelection::started() const { return Anchor != -1; }
+
+inline bool TDESelection::justStarted() const { return Anchor != -1 && start() == -1; }
+
+inline bool TDESelection::isForward() const { return Anchor == start(); }
+
+}
+
+#endif