src/common/radiocmn.cpp

///////////////////////////////////////////////////////////////////////////////
// Name:        src/common/radiocmn.cpp
// Purpose:     wxRadioBox methods common to all ports
// Author:      Vadim Zeitlin
// Modified by:
// Created:     03.06.01
// RCS-ID:      $Id$
// Copyright:   (c) 2001 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
// License:     wxWindows licence
///////////////////////////////////////////////////////////////////////////////

// ============================================================================
// declarations
// ============================================================================

// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------

// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
    #pragma hdrstop
#endif

#if wxUSE_RADIOBOX

#ifndef WX_PRECOMP
    #include "wx/radiobox.h"
#endif //WX_PRECOMP

// ============================================================================
// implementation
// ============================================================================

int wxRadioBoxBase::GetNextItem(int item, wxDirection dir, long style) const
{
    int count = GetCount(),
        numCols = GetColumnCount(),
        numRows = GetRowCount();

    bool horz = (style & wxRA_SPECIFY_COLS) != 0;

    switch ( dir )
    {
        case wxUP:
            if ( horz )
            {
                item -= numCols;
            }
            else // vertical layout
            {
                if ( !item-- )
                    item = count - 1;
            }
            break;

        case wxLEFT:
            if ( horz )
            {
                if ( !item-- )
                    item = count - 1;
            }
            else // vertical layout
            {
                item -= numRows;
            }
            break;

        case wxDOWN:
            if ( horz )
            {
                item += numCols;
            }
            else // vertical layout
            {
                if ( ++item == count )
                    item = 0;
            }
            break;

        case wxRIGHT:
            if ( horz )
            {
                if ( ++item == count )
                    item = 0;
            }
            else // vertical layout
            {
                item += numRows;
            }
            break;

        default:
            wxFAIL_MSG( _T("unexpected wxDirection value") );
            return wxNOT_FOUND;
    }

    // ensure that the item is in range [0..count)
    if ( item < 0 )
    {
        // first map the item to the one in the same column but in the last row
        item += count;

        // now there are 2 cases: either it is the first item of the last row
        // in which case we need to wrap again and get to the last item or we
        // can just go to the previous item
        if ( item % (horz ? numCols : numRows) )
            item--;
        else
            item = count - 1;
    }
    else if ( item >= count )
    {
        // same logic as above
        item -= count;

        // ... except that we need to check if this is not the last item, not
        // the first one
        if ( (item + 1) % (horz ? numCols : numRows) )
            item++;
        else
            item = 0;
    }

    wxASSERT_MSG( item < count && item >= 0,
                  _T("logic error in wxRadioBox::GetNextItem()") );

    return item;
}

#if WXWIN_COMPATIBILITY_2_4

// these functions are deprecated and don't do anything
int wxRadioBoxBase::GetNumberOfRowsOrCols() const
{
    return 1;
}

void wxRadioBoxBase::SetNumberOfRowsOrCols(int WXUNUSED(n))
{
}

#endif // WXWIN_COMPATIBILITY_2_4

#endif // wxUSE_RADIOBOX
Commit	Line	Data
	1	///////////////////////////////////////////////////////////////////////////////
	2	// Name: src/common/radiocmn.cpp
	3	// Purpose: wxRadioBox methods common to all ports
	4	// Author: Vadim Zeitlin
	5	// Modified by:
	6	// Created: 03.06.01
	7	// RCS-ID: $Id$
	8	// Copyright: (c) 2001 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
	9	// License: wxWindows licence
	10	///////////////////////////////////////////////////////////////////////////////
	11
	12	// ============================================================================
	13	// declarations
	14	// ============================================================================
	15
	16	// ----------------------------------------------------------------------------
	17	// headers
	18	// ----------------------------------------------------------------------------
	19
	20	// For compilers that support precompilation, includes "wx.h".
	21	#include "wx/wxprec.h"
	22
	23	#ifdef __BORLANDC__
	24	#pragma hdrstop
	25	#endif
	26
	27	#if wxUSE_RADIOBOX
	28
	29	#ifndef WX_PRECOMP
	30	#include "wx/radiobox.h"
	31	#endif //WX_PRECOMP
	32
	33	// ============================================================================
	34	// implementation
	35	// ============================================================================
	36
	37	int wxRadioBoxBase::GetNextItem(int item, wxDirection dir, long style) const
	38	{
	39	int count = GetCount(),
	40	numCols = GetColumnCount(),
	41	numRows = GetRowCount();
	42
	43	bool horz = (style & wxRA_SPECIFY_COLS) != 0;
	44
	45	switch ( dir )
	46	{
	47	case wxUP:
	48	if ( horz )
	49	{
	50	item -= numCols;
	51	}
	52	else // vertical layout
	53	{
	54	if ( !item-- )
	55	item = count - 1;
	56	}
	57	break;
	58
	59	case wxLEFT:
	60	if ( horz )
	61	{
	62	if ( !item-- )
	63	item = count - 1;
	64	}
	65	else // vertical layout
	66	{
	67	item -= numRows;
	68	}
	69	break;
	70
	71	case wxDOWN:
	72	if ( horz )
	73	{
	74	item += numCols;
	75	}
	76	else // vertical layout
	77	{
	78	if ( ++item == count )
	79	item = 0;
	80	}
	81	break;
	82
	83	case wxRIGHT:
	84	if ( horz )
	85	{
	86	if ( ++item == count )
	87	item = 0;
	88	}
	89	else // vertical layout
	90	{
	91	item += numRows;
	92	}
	93	break;
	94
	95	default:
	96	wxFAIL_MSG( _T("unexpected wxDirection value") );
	97	return wxNOT_FOUND;
	98	}
	99
	100	// ensure that the item is in range [0..count)
	101	if ( item < 0 )
	102	{
	103	// first map the item to the one in the same column but in the last row
	104	item += count;
	105
	106	// now there are 2 cases: either it is the first item of the last row
	107	// in which case we need to wrap again and get to the last item or we
	108	// can just go to the previous item
	109	if ( item % (horz ? numCols : numRows) )
	110	item--;
	111	else
	112	item = count - 1;
	113	}
	114	else if ( item >= count )
	115	{
	116	// same logic as above
	117	item -= count;
	118
	119	// ... except that we need to check if this is not the last item, not
	120	// the first one
	121	if ( (item + 1) % (horz ? numCols : numRows) )
	122	item++;
	123	else
	124	item = 0;
	125	}
	126
	127	wxASSERT_MSG( item < count && item >= 0,
	128	_T("logic error in wxRadioBox::GetNextItem()") );
	129
	130	return item;
	131	}
	132
	133	#if WXWIN_COMPATIBILITY_2_4
	134
	135	// these functions are deprecated and don't do anything
	136	int wxRadioBoxBase::GetNumberOfRowsOrCols() const
	137	{
	138	return 1;
	139	}
	140
	141	void wxRadioBoxBase::SetNumberOfRowsOrCols(int WXUNUSED(n))
	142	{
	143	}
	144
	145	#endif // WXWIN_COMPATIBILITY_2_4
	146
	147	#endif // wxUSE_RADIOBOX