// 1_6View.cpp : implementation of the CMy1_6View class
//

#include "stdafx.h"
#include "1_6.h"

#include "1_6Doc.h"
#include "1_6View.h"

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

/////////////////////////////////////////////////////////////////////////////
// CMy1_6View

IMPLEMENT_DYNCREATE(CMy1_6View, CView)

BEGIN_MESSAGE_MAP(CMy1_6View, CView)
	//{{AFX_MSG_MAP(CMy1_6View)
	ON_WM_CREATE()
	ON_WM_TIMER()
	//}}AFX_MSG_MAP
	// Standard printing commands
	ON_COMMAND(ID_FILE_PRINT, CView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_DIRECT, CView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView::OnFilePrintPreview)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMy1_6View construction/destruction

CMy1_6View::CMy1_6View()
{
	// TODO: add construction code here
    xStart=30;
	yStart=30;
	xadd=0;
	yadd=0;
    m_Bitmap.LoadBitmap(IDB_BITMAP1);
    cTransparentColor=RGB(255,255,255);
}

CMy1_6View::~CMy1_6View()
{
}

BOOL CMy1_6View::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CMy1_6View drawing

void CMy1_6View::OnDraw(CDC* pDC)
{
	CMy1_6Doc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
	//畫紅色背景
    CBrush mybrush1;
 	mybrush1.CreateSolidBrush(RGB(255,0,0));
 	CRect myrect1(0,0,1200,800);
 	pDC->FillRect(myrect1,&mybrush1);
  
	 
}

/////////////////////////////////////////////////////////////////////////////
// CMy1_6View printing

BOOL CMy1_6View::OnPreparePrinting(CPrintInfo* pInfo)
{
	// default preparation
	return DoPreparePrinting(pInfo);
}

void CMy1_6View::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add extra initialization before printing
}

void CMy1_6View::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add cleanup after printing
}

/////////////////////////////////////////////////////////////////////////////
// CMy1_6View diagnostics

#ifdef _DEBUG
void CMy1_6View::AssertValid() const
{
	CView::AssertValid();
}

void CMy1_6View::Dump(CDumpContext& dc) const
{
	CView::Dump(dc);
}

CMy1_6Doc* CMy1_6View::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CMy1_6Doc)));
	return (CMy1_6Doc*)m_pDocument;
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CMy1_6View message handlers
//本函數(shù)把一種指定的顏色變成透明色，并可改變大小
//   hdc 顯示句柄
//   hBitmap要顯示的位圖
//   xStart，xStart顯示的位置
//   xadd,yadd顯示的位圖的加大加小
//   cTransparentColor變成透明的那種顏色
void CMy1_6View::TransparentBitmap(HDC hdc, HBITMAP hBitmap, 
					     short xStart, short yStart, short xadd,short yadd,
						 COLORREF cTransparentColor)
{
   BITMAP     m_bm;
   COLORREF   cColor;  
   
   // 創(chuàng)建臨時(shí)DC
   HDC     hMem, hBack, hObject, hTemp, hSave;
   hBack   = CreateCompatibleDC(hdc);
   hObject = CreateCompatibleDC(hdc);
   hMem    = CreateCompatibleDC(hdc);
   hSave   = CreateCompatibleDC(hdc);   
   hTemp   = CreateCompatibleDC(hdc);
   // 選入位圖
   SelectObject(hTemp, hBitmap);   
   GetObject(hBitmap, sizeof(BITMAP), (LPSTR)&m_bm);
   //顯示位圖寬高
   POINT      ptSize;
   // 取得位圖的寬度
   ptSize.x = m_bm.bmWidth;     
    // 取得位圖的該度
   ptSize.y = m_bm.bmHeight;           
   // 轉(zhuǎn)換為邏輯點(diǎn)值
   DPtoLP(hTemp, &ptSize, 1);   
   
   // 創(chuàng)建臨時(shí)位圖
   HBITMAP    bmBack, bmObject, bmMem, bmSave;
   // 單色位圖
   bmBack   = CreateBitmap(ptSize.x, ptSize.y, 1, 1, NULL);    
   bmObject = CreateBitmap(ptSize.x, ptSize.y, 1, 1, NULL);
   // 與設(shè)備兼容位圖
   bmMem    = CreateCompatibleBitmap(hdc, ptSize.x, ptSize.y);
   bmSave      = CreateCompatibleBitmap(hdc, ptSize.x, ptSize.y);

   // 將創(chuàng)建的臨時(shí)位圖選入臨時(shí)DC中
   HBITMAP    OldbmBack, OldbmObject, OldbmMem, OldbmSave;
   OldbmBack   = (HBITMAP)SelectObject(hBack, bmBack);
   OldbmObject = (HBITMAP)SelectObject(hObject, bmObject);
   OldbmMem    = (HBITMAP)SelectObject(hMem, bmMem);
   OldbmSave   = (HBITMAP)SelectObject(hSave, bmSave);

   // 設(shè)置映射模式
   SetMapMode(hTemp, GetMapMode(hdc));
   // 先保留原始位圖
   BitBlt(hSave, 0, 0, ptSize.x, ptSize.y, hTemp, 0, 0, SRCCOPY);
   // 將背景顏色設(shè)置為需透明的顏色
   cColor = SetBkColor(hTemp, cTransparentColor);
   // 創(chuàng)建目標(biāo)屏蔽碼
   BitBlt(hObject, 0, 0, ptSize.x, ptSize.y, hTemp, 0, 0, SRCCOPY);
   // 恢復(fù)源DC的原始背景色
   SetBkColor(hTemp, cColor);

   // 創(chuàng)建反轉(zhuǎn)的目標(biāo)屏蔽碼
   BitBlt(hBack, 0, 0, ptSize.x, ptSize.y, hObject, 0, 0, NOTSRCCOPY);
   // 拷貝主DC的背景到目標(biāo)DC
   BitBlt(hMem, 0, 0, ptSize.x, ptSize.y, hdc, xStart, yStart, SRCCOPY);
   // 屏蔽位圖的顯示區(qū)
   BitBlt(hMem, 0, 0, ptSize.x, ptSize.y, hObject, 0, 0, SRCAND);
   // 屏蔽位圖中的透明色
   BitBlt(hTemp, 0, 0, ptSize.x, ptSize.y, hBack, 0, 0, SRCAND);
   // 將位圖與目標(biāo)DC的背景左異或操作
   BitBlt(hMem, 0, 0, ptSize.x, ptSize.y, hTemp, 0, 0, SRCPAINT);
   // 拷貝目標(biāo)到屏幕上 
   StretchBlt(hdc, xStart, yStart, ptSize.x+xadd, ptSize.y+yadd, hMem, 0, 0, ptSize.x, ptSize.y,SRCCOPY);
   // 恢復(fù)原始位圖
   BitBlt(hTemp, 0, 0, ptSize.x, ptSize.y, hSave, 0, 0, SRCCOPY);

   // 刪除臨時(shí)內(nèi)存位圖
   DeleteObject(SelectObject(hBack, OldbmBack));
   DeleteObject(SelectObject(hObject, OldbmObject));
   DeleteObject(SelectObject(hMem, OldbmMem));
   DeleteObject(SelectObject(hSave, OldbmSave));

   // 刪除臨時(shí)內(nèi)存DC
   DeleteDC(hMem);
   DeleteDC(hBack);
   DeleteDC(hObject);
   DeleteDC(hSave);
   DeleteDC(hTemp);
}

int CMy1_6View::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	if (CView::OnCreate(lpCreateStruct) == -1)
		return -1;
	
	// TODO: Add your specialized creation code here
	SetTimer(1,150,NULL);
	return 0;
}

void CMy1_6View::OnTimer(UINT nIDEvent) 
{
	// TODO: Add your message handler code here and/or call default
	//獲取指針pdc
 	CDC *pDC=GetDC();
	//調(diào)用OnDraw(pDC)重畫
 	OnDraw(pDC);
	
	CClientDC dc(this);
	//向右向下移動(dòng)
	xStart+=5;
	yStart+=5;
	//位圖寬高加2
	xadd+=2;yadd+=2;
	//顯示
 	TransparentBitmap(dc.GetSafeHdc(), m_Bitmap, xStart,  yStart, xadd,yadd, cTransparentColor);	
	CView::OnTimer(nIDEvent);
}