www.pudn.com > VCYXSJRM.rar > canvasFrame.cpp

// canvasFrame.cpp : implementation file 
// 
 
#include "stdafx.h" 
#include "canvasr.h" 
#include "canvasFrame.h" 
 
#ifdef _DEBUG 
#define new DEBUG_NEW 
#undef THIS_FILE 
static char THIS_FILE[] = __FILE__; 
#endif 
 
///////////////////////////////////////////////////////////////////////////// 
// canvasFrame 
 
IMPLEMENT_DYNCREATE(canvasFrame, CFrameWnd) 
 
canvasFrame::canvasFrame() 
{ 
	Create(NULL,"绘图窗口"); 
	CClientDC dc(this); 
	int width = dc.GetDeviceCaps(HORZRES); 
	int height = dc.GetDeviceCaps(VERTRES); 
	GetWindowRect( &rect ); 
	width = ( width - ( rect.right - rect.left ))/2 ; 
	height = (height - (rect.bottom - rect.top ))/2 ; 
	MoveWindow( width , height , (rect.right - rect.left ) , (rect.bottom - rect.top ) ,true); 
	limpid(&dc); 
} 
 
canvasFrame::limpid(CDC *dc) 
{ 
	BITMAP bm;            //声明bm为BITMAP数据结构 
	int x,y,i=0; 
	GetClientRect(&rect); 
	mdc = new CDC;         
	bitmap = new CBitmap; 
	bgbmp = new CBitmap; 
	mdc->CreateCompatibleDC(dc); //建立与dc兼容的DC 
	bgbmp->m_hObject = (HBITMAP)::LoadImage(NULL,"bground.bmp",IMAGE_BITMAP,rect.right,rect.bottom,LR_LOADFROMFILE); //载入背景图 
	bitmap->m_hObject = (HBITMAP)::LoadImage(NULL,"girl.bmp",IMAGE_BITMAP,298,329,LR_LOADFROMFILE); //载入源位图 
	bitmap->GetObject(sizeof(BITMAP),&bm); //取得 bitmap 位图的信息 
	double *px = new double[bm.bmHeight*bm.bmWidthBytes]; //声明暂存数组 
	bitmap->GetBitmapBits(bm.bmHeight*bm.bmWidthBytes,px); //取得源位图各像素点的 RGB 值存入 px 数组中 
	for(y=0;yGetObject(sizeof(BITMAP),&bm); //取得 bgbmp 位图的信息 
	double *px1 = new double[bm.bmHeight*bm.bmWidthBytes];  //声明暂存数组 
	bgbmp->GetBitmapBits(bm.bmHeight*bm.bmWidthBytes,px1); //取得源位图各像素点的 RGB 值存入 px1 数组中 
	for(y=20;y<=348;y++) 
		for(x=150;x<=447;x++) 
		{ 
			px1[x*3+y*bm.bmWidthBytes] = px1[x*3+y*bm.bmWidthBytes]*0.5 + px[i]; //将 B 色彩值乘以 50% 并与 px 相加 
			px1[x*3+1+y*bm.bmWidthBytes] = px1[x*3+1+y*bm.bmWidthBytes]*0.5 + px[i+1];//将 G 色彩值乘以 50% 并与 px 相加 
			px1[x*3+2+y*bm.bmWidthBytes] = px1[x*3+2+y*bm.bmWidthBytes]*0.5 + px[i+2];//将 R 色彩值乘以 50% 并与 px 相加 
			i=i+3; 
		} 
	bgbmp->SetBitmapBits(bm.bmHeight*bm.bmWidthBytes,px1); //重设背景图的颜色 
	mdc->SelectObject(bgbmp);  //选择位图对象到mdc中 
	delete px; 
	delete px1; 
} 
 
canvasFrame::~canvasFrame() 
{ 
	if(mdc) delete mdc; 
	if(bgbmp) delete bgbmp; 
	if(bitmap) delete bitmap; 
} 
 
BEGIN_MESSAGE_MAP(canvasFrame, CFrameWnd) 
	//{{AFX_MSG_MAP(canvasFrame) 
	ON_WM_PAINT() 
	//}}AFX_MSG_MAP 
END_MESSAGE_MAP() 
 
///////////////////////////////////////////////////////////////////////////// 
// canvasFrame message handlers 
 
void canvasFrame::OnPaint() 
{ 
	CPaintDC dc(this);    //建立响应WM_PAINT信息的DC 
	dc.BitBlt(0,0,rect.right,rect.bottom,mdc,0,0,SRCCOPY); 
}