D:/~Research/Code/C++/EvolveTraffic/PreferencesDlg.cpp

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// PreferencesDlg.cpp : implementation file
//

#include "stdafx.h"
#include "EvolveTraffic.h"
#include "PreferencesDlg.h"

#include "GridCtrl_src/GridCellNumeric.h"

#include "ConfigData.h"
extern CConfigData g_ConfigData;

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

// CPreferencesDlg dialog


CPreferencesDlg::CPreferencesDlg(CWnd* pParent /*=NULL*/)
        : CDialog(CPreferencesDlg::IDD, pParent)
{
        MIN_VIEW_SCALE = g_ConfigData.View.MIN_VIEW_SCALE;

        m_sRowHeads.Add("Overall scale (meters/pixel)");
        m_sRowHeads.Add("Widths Scale");
        m_sRowHeads.Add("Time warp factor");
        m_sRowHeads.Add("Lane width (m)");
        m_sRowHeads.Add("Vehicle width (m)");
        m_sRowHeads.Add("Vehicle Length Scale");
        m_sRowHeads.Add("Show Velocities");
        m_sRowHeads.Add("Show Legend");
        m_sRowHeads.Add("Tick Length (m)");
        m_sRowHeads.Add("Tick Interval (m)");
        m_sRowHeads.Add("Border Top (m)");
        m_sRowHeads.Add("Border Bottom (m)");
        m_sRowHeads.Add("Border Left (m)");
        m_sRowHeads.Add("Border Right (m)");

        m_sColHeads.Add("Setting");
        m_sColHeads.Add("Value");
        
        m_nFixRows = FIXED_ROWS;        // MAGIC NUMBER - row and column headers
        m_nFixCols = FIXED_COLUMNS;
        
        m_nCols = 1 + m_nFixCols;       // MAGIC NUMBER - obviously 1 extra column
        m_nRows = m_sRowHeads.GetSize() + m_nFixRows;

        //{{AFX_DATA_INIT(CPreferencesDlg)
                // NOTE: the ClassWizard will add member initialization here
        //}}AFX_DATA_INIT
}


void CPreferencesDlg::DoDataExchange(CDataExchange* pDX)
{
        CDialog::DoDataExchange(pDX);
        //{{AFX_DATA_MAP(CPreferencesDlg)
        DDX_Control(pDX, IDC_GRID, m_Grid);             // associate the grid window with a C++ object
        //}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CPreferencesDlg, CDialog)
        //{{AFX_MSG_MAP(CPreferencesDlg)
        ON_NOTIFY(GVN_ENDLABELEDIT, IDC_GRID, OnGridEndEdit)
        //}}AFX_MSG_MAP
END_MESSAGE_MAP()

// CPreferencesDlg message handlers


void CPreferencesDlg::OnOK() 
{
        CDialog::OnOK();
        if(m_Scale < MIN_VIEW_SCALE)
        {
                MessageBox("View scale cannot be less than minimum - default minimum set", "EvolveTraffic", MB_OK | MB_ICONWARNING);
                m_Scale = MIN_VIEW_SCALE;
        }
        if(m_ExaggerateWidths < 1.0)
        {
                MessageBox("Widths scale cannot be less than 1.0 - default set", "EvolveTraffic", MB_OK | MB_ICONWARNING);
                m_ExaggerateWidths = 1.0;
        }
        if(m_TimeWarp < 1.0)
        {
                MessageBox("Widths scale cannot be less than 1.0 - default set", "EvolveTraffic", MB_OK | MB_ICONWARNING);
                m_ExaggerateWidths = 1.0;
        }
        if(m_VehicleWidth > m_LaneWidth)
        {
                MessageBox("Vehicle width should be less than lane width - default of 80% of lane width set", "EvolveTraffic",  MB_OK | MB_ICONWARNING);
                m_VehicleWidth = 0.8 * m_LaneWidth;     // MAGIC NUMBER - no harm having a magic number here
        }
}

BOOL CPreferencesDlg::OnInitDialog()
{
        CDialog::OnInitDialog();

        TRY {
                m_Grid.SetRowCount(m_nRows);
                m_Grid.SetColumnCount(m_nCols);
                m_Grid.SetFixedRowCount(m_nFixRows);
                m_Grid.SetFixedColumnCount(m_nFixCols);
        }
        CATCH (CMemoryException, e)
        {
                e->ReportError();
                return FALSE;
        }
        END_CATCH
        
        SetGridHeadings();
        SetCells();
        m_Grid.ExpandToFit();   
        
        LoadSettingsIntoGrid();

        return TRUE;  // return TRUE  unless you set the focus to a control
}

void CPreferencesDlg::SetGridHeadings()
{
        int row = 0;
        int col = 0;

        // Set fixed column text
        m_Grid.SetItemText(row,m_nFixCols-1,m_sColHeads.GetAt(0));
        m_Grid.SetItemText(row,m_nFixCols,m_sColHeads.GetAt(1));

        // Set fixed row text
        col = 0;
        for (row = 1; row < m_Grid.GetRowCount(); row++)
                m_Grid.SetItemText(row,col,m_sRowHeads.GetAt(row-1));
}

void CPreferencesDlg::SetCells()
{
        for (int row = 1; row < m_nRows; row++)
        {
                int col = 1;
                m_Grid.SetCellType(row,col, RUNTIME_CLASS(CGridCellNumeric));
                m_Grid.GetCell(row,col)->SetFormat(DT_CENTER|DT_VCENTER|DT_SINGLELINE|DT_NOPREFIX|DT_END_ELLIPSIS);
                CGridCellNumeric *pCell = (CGridCellNumeric*)m_Grid.GetCell(row,col);
                pCell->SetFlags(CGridCellNumeric::Real);        // no negative numbers
        }
}

void CPreferencesDlg::LoadSettingsIntoGrid()
{
        int col = 1;
        for (int row = 1; row < m_nRows; row++)
        {
                CGridCellNumeric* pCell = (CGridCellNumeric *)(m_Grid.GetCell(row,col));
                pCell->SetNumber( *(MapRowToValue(row)) );
        }
}

void CPreferencesDlg::OnGridEndEdit(NMHDR *pNotifyStruct, LRESULT* pResult)
{
        // if change is ok, then *pResult 0, else *pResult -1
        
        // pItem is the cell that has just been edited
    NM_GRIDVIEW* pItem = (NM_GRIDVIEW*) pNotifyStruct;
    
    int row = pItem->iRow;
        int col = pItem->iColumn;

        double val = ((CGridCellNumeric *)(m_Grid.GetCell(row,col)))->GetNumber();
        *(MapRowToValue(row)) = val;

        *pResult = 0;
}

double* CPreferencesDlg::MapRowToValue(int row)
{
        // This functions assumes the variable order as per m_sRowHeads

        row = row - m_nFixRows; // keeps independence of m_nFixRows
        switch(row)
        {
                case 0:
                        return &m_Scale;
                case 1:
                        return &m_ExaggerateWidths;
                case 2:
                        return &m_TimeWarp;
                case 3:
                        return &m_LaneWidth;
                case 4:
                        return &m_VehicleWidth;
                case 5:
                        return &m_VehicleLengthScale;
                case 6:
                        return &m_ShowVelocity;
                case 7:
                        return &m_ShowLegend;
                case 8:
                        return &m_TickLength;
                case 9:
                        return &m_TickStep;
                case 10:
                        return &m_Border_Top;
                case 11:
                        return &m_Border_Btm;
                case 12:
                        return &m_Border_Lhs;
                case 13:
                        return &m_Border_Rhs;
                default:
                        return &m_Border_Top;
        }
}

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