ex13aview.cpp

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// Ex13aView.cpp : implementation of the CEx13aView class
//

#include "stdafx.h"
#include "Ex13a.h"

#include "Ex13aDoc.h"
#include "Ex13aView.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif


// CEx13aView

IMPLEMENT_DYNCREATE(CEx13aView, CView)

BEGIN_MESSAGE_MAP(CEx13aView, CView)
	ON_COMMAND(ID_DRAW_CIRCLE, OnDrawCircle)
	ON_UPDATE_COMMAND_UI(ID_DRAW_CIRCLE, OnUpdateDrawCircle)
	ON_COMMAND(ID_DRAW_PATTERN, OnDrawPattern)
	ON_UPDATE_COMMAND_UI(ID_DRAW_PATTERN, OnUpdateDrawPattern)
	ON_COMMAND(ID_DRAW_SQUARE, OnDrawSquare)
	ON_UPDATE_COMMAND_UI(ID_DRAW_SQUARE, OnUpdateDrawSquare)
END_MESSAGE_MAP()

// CEx13aView construction/destruction

CEx13aView::CEx13aView() : m_rect(0, 0, 100, 100)
{
    m_bCircle = TRUE;
    m_bPattern = FALSE;
}

CEx13aView::~CEx13aView()
{
}

BOOL CEx13aView::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs

	return CView::PreCreateWindow(cs);
}

// CEx13aView drawing

void CEx13aView::OnDraw(CDC* pDC)
{
	CEx13aDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);

    CBrush brush(HS_BDIAGONAL, 0L); // brush with diagonal pattern

    if (m_bPattern) {
        pDC->SelectObject(&brush);
    }
    else {
        pDC->SelectStockObject(WHITE_BRUSH);
    }
    if (m_bCircle) {
        pDC->Ellipse(m_rect);
    }
    else {
        pDC->Rectangle(m_rect);
    }
    pDC->SelectStockObject(WHITE_BRUSH); // Deselects brush
                                         //  if selected
}


// CEx13aView diagnostics

#ifdef _DEBUG
void CEx13aView::AssertValid() const
{
	CView::AssertValid();
}

void CEx13aView::Dump(CDumpContext& dc) const
{
	CView::Dump(dc);
}

CEx13aDoc* CEx13aView::GetDocument() const // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CEx13aDoc)));
	return (CEx13aDoc*)m_pDocument;
}
#endif //_DEBUG


// CEx13aView message handlers

void CEx13aView::OnDrawCircle()
{
    m_bCircle = TRUE;
    m_rect += CPoint(25, 25);
    InvalidateRect(m_rect);
}

void CEx13aView::OnUpdateDrawCircle(CCmdUI *pCmdUI)
{
    pCmdUI->Enable(!m_bCircle);
}

void CEx13aView::OnDrawPattern()
{
    m_bPattern ^= 1;
}

void CEx13aView::OnUpdateDrawPattern(CCmdUI *pCmdUI)
{
    pCmdUI->SetCheck(m_bPattern);
}

void CEx13aView::OnDrawSquare()
{
    m_bCircle = FALSE;
    m_rect += CPoint(25, 25);
    InvalidateRect(m_rect);
}

void CEx13aView::OnUpdateDrawSquare(CCmdUI *pCmdUI)
{
    pCmdUI->Enable(m_bCircle);
}