14f355c2b5
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@22723 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
139 lines
3.6 KiB
C++
139 lines
3.6 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name: src/common/radiocmn.cpp
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// Purpose: wxRadioBox methods common to all ports
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// Author: Vadim Zeitlin
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// Modified by:
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// Created: 03.06.01
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// RCS-ID: $Id$
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// Copyright: (c) 2001 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
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// License: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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// ============================================================================
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// declarations
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// ============================================================================
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// ----------------------------------------------------------------------------
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// headers
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// ----------------------------------------------------------------------------
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#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
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#pragma implementation "radioboxbase.h"
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#endif
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// For compilers that support precompilation, includes "wx.h".
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#if wxUSE_RADIOBOX
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#ifndef WX_PRECOMP
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#include "wx/radiobox.h"
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#endif //WX_PRECOMP
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// ============================================================================
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// implementation
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// ============================================================================
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int wxRadioBoxBase::GetNextItem(int item, wxDirection dir, long style) const
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{
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int count = GetCount(),
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numCols = GetColumnCount(),
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numRows = GetRowCount();
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bool horz = (style & wxRA_SPECIFY_COLS) != 0;
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switch ( dir )
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{
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case wxUP:
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if ( horz )
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{
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item -= numCols;
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}
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else // vertical layout
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{
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if ( !item-- )
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item = count - 1;
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}
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break;
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case wxLEFT:
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if ( horz )
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{
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if ( !item-- )
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item = count - 1;
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}
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else // vertical layout
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{
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item -= numRows;
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}
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break;
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case wxDOWN:
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if ( horz )
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{
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item += numCols;
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}
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else // vertical layout
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{
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if ( ++item == count )
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item = 0;
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}
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break;
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case wxRIGHT:
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if ( horz )
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{
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if ( ++item == count )
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item = 0;
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}
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else // vertical layout
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{
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item += numRows;
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}
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break;
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default:
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wxFAIL_MSG( _T("unexpected wxDirection value") );
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return -1;
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}
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// ensure that the item is in range [0..count)
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if ( item < 0 )
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{
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// first map the item to the one in the same column but in the last row
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item += count;
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// now there are 2 cases: either it is the first item of the last row
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// in which case we need to wrap again and get to the last item or we
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// can just go to the previous item
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if ( item % (horz ? numCols : numRows) )
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item--;
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else
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item = count - 1;
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}
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else if ( item >= count )
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{
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// same logic as above
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item -= count;
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// ... except that we need to check if this is not the last item, not
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// the first one
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if ( (item + 1) % (horz ? numCols : numRows) )
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item++;
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else
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item = 0;
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}
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wxASSERT_MSG( item < count && item >= 0,
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_T("logic error in wxRadioBox::GetNextItem()") );
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return item;
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}
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#endif // wxUSE_RADIOBOX
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