CD/PC Actual 76/DVD Actual 1 Marzo 2003.iso/Trial/TurboCAD 7.1 Pro/Data.Cab/F24375_VPWnd.cpp

C/C++ Source or Header | 2000-11-10 | 4.5 KB | 213 lines

// VPWnd.cpp : implementation file
// TurboCAD SDK: new class implementation

#include "stdafx.h"
#include "LTSample.h"
#include "VPWnd.h"

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

/////////////////////////////////////////////////////////////////////////////
// CViewWnd
// TurboCAD SDK: class created to manage view on dialog box

CViewWnd::CViewWnd() :
    m_pView(NULL),
    m_bStartSelect(FALSE),
    m_pIDrawing(NULL)
{
    m_varTopLevel.vt = VT_BOOL;
    m_varInvisible.vt = VT_BOOL;
    m_varSegments.vt = VT_BOOL;
    m_varArcs.vt = VT_BOOL;
    m_varTexts.vt = VT_BOOL;
    m_varBlocks.vt = VT_BOOL;

    m_varTopLevel.boolVal = FALSE;
    m_varInvisible.boolVal = FALSE;
    m_varSegments.boolVal = TRUE;
    m_varArcs.boolVal = TRUE;
    m_varTexts.boolVal = TRUE;
    m_varBlocks.boolVal = TRUE;
}

CViewWnd::~CViewWnd()
{
    SetView(NULL);
}


BEGIN_MESSAGE_MAP(CViewWnd, CWnd)
    //{{AFX_MSG_MAP(CViewWnd)
    ON_WM_PAINT()
    ON_WM_LBUTTONDOWN()
    ON_WM_ERASEBKGND()
    //}}AFX_MSG_MAP
END_MESSAGE_MAP()

// TurboCAD SDK: set the view, if one already exists, delete and release it
//               before assigning the new one.
void CViewWnd::SetView(View* pView)
{
    if (m_pView != NULL)
    {
        // Delete view object
        m_pView->Delete();

        // Decrement reference count
        m_pView->Release();
        m_pView = NULL;
        if (m_pIDrawing != NULL)
        {
            m_pIDrawing->Release();
            m_pIDrawing = NULL;
        }
    }

    if (pView == NULL)
        return;

    m_pView = pView;

    // Increment reference count
    m_pView->AddRef();

    m_pView->put_Update(FALSE);
    // Map window to view
    m_pView->put_HWND((long)m_hWnd);

    // Keep a reference to the drawing
    m_pView->get_Drawing(&m_pIDrawing);

    // zoom to drawing extents and invalidate the window
    ZoomAndInvalidate();
}

BOOL CViewWnd::SetSelectMode()
{
    m_bStartSelect = ~m_bStartSelect;
    return m_bStartSelect;
}

IDrawing* CViewWnd::GetDrawing()
{
    if (m_pIDrawing != NULL)
        m_pIDrawing->AddRef();
    return m_pIDrawing;
}

Graphics* CViewWnd::GetGraphics()
{
    Graphics* pGraphics = NULL;
    if (m_pIDrawing != NULL)
        m_pIDrawing->get_Graphics(&pGraphics);
    return pGraphics;
}

// TurboCAD SDK: zoom to drawing extents and invalidate the window
void CViewWnd::ZoomAndInvalidate()
{
    // No view, exit
    if (m_pView == NULL)
        return;

    // Zoom to extents
    HRESULT hRes = m_pView->ZoomToExtents();
    if (FAILED(hRes))
    {
//        m_pView->put_Update(TRUE);
    }

    // Invalidate window to force redraw
    Invalidate();
}

/////////////////////////////////////////////////////////////////////////////
// CViewWnd message handlers

// TurboCAD SDK: override OnPaint to refresh the view
void CViewWnd::OnPaint()
{
    CPaintDC dc(this); // device context for painting

    if (m_pView == NULL)
        return;

    // Force redraw of view window
    HRESULT hRes = m_pView->Refresh();
    if (FAILED(hRes))
    {
    }
}

// TurboCAD SDK: override OnEraseBkgnd to reset the drawing area
BOOL CViewWnd::OnEraseBkgnd(CDC* pDC)
{
    CRect rect;
    GetClientRect(rect);
    pDC->FillSolidRect(rect, ::GetSysColor(COLOR_WINDOW));
    return TRUE;
}

void CViewWnd::OnLButtonDown(UINT nFlags, CPoint point)
{
    if (m_bStartSelect)
    {
        Selection *pSel = NULL;
        HRESULT hRes = m_pIDrawing->get_Selection(&pSel);
        if (SUCCEEDED(hRes))
        {
            pSel->Unselect();
            pSel->Release();
        }

        double dblX, dblY;
        m_pView->ScreenToView(point.x,point.y, &dblX,&dblY);

        COleVariant varAperture((const double&)0.1);
        PickResult *pPickRes = NULL;

        hRes = m_pView->PickPoint(dblX, dblY,
                                   &varAperture,
                                   &m_varTopLevel,
                                   &m_varArcs,
                                   &m_varTexts,
                                   &m_varSegments,
                                   &m_varBlocks,
                                   &m_varInvisible,
                                   &pPickRes);
        if (SUCCEEDED(hRes))
        {
            PickEntry *pPickEntry = NULL;
            COleVariant varIndex((long)0);
            hRes = pPickRes->get_Item(&varIndex,&pPickEntry);
            if (SUCCEEDED(hRes))
            {
                IGraphic *pIGr = NULL;
                hRes = pPickEntry->get_Graphic(&pIGr);
                if (SUCCEEDED(hRes))
                {
                    hRes = pIGr->Select();
                    if (SUCCEEDED(hRes))
                    {
                        AfxMessageBox(IDS_SYMBOLSELECTED);
                    }
                    else
                        AfxMessageBox(IDS_CANNOTSELECTGRAPHIC);
                    pIGr->Release();
                }
                pPickEntry->Release();
            }
            else
                AfxMessageBox(IDS_CANNOTGETPICKENTRY);
            pPickRes->Release();
        }
        GetParent()->SendMessage(WM_COMMAND, MAKEWPARAM(IDC_SELECTSYMBOL, BN_CLICKED), 0);
    }
    CWnd::OnLButtonDown(nFlags, point);
}