transjpegview.cpp

《医学图象的远程传输系统》

// TransJpegView.cpp : implementation file
//

#include "stdafx.h"
#include "TransClient.h"
#include "TransJpegView.h"
#include "TransClientDoc.h"

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

/////////////////////////////////////////////////////////////////////////////
// CTransJpegView

IMPLEMENT_DYNCREATE(CTransJpegView, CScrollView)

CTransJpegView::CTransJpegView()
{
    m_bmInfo.bmiHeader.biBitCount=24;
    m_bmInfo.bmiHeader.biClrImportant=0;
    m_bmInfo.bmiHeader.biClrUsed=0;
    m_bmInfo.bmiHeader.biCompression=BI_RGB;
    m_bmInfo.bmiHeader.biHeight=0;
    m_bmInfo.bmiHeader.biPlanes=1;
    m_bmInfo.bmiHeader.biSize=sizeof(BITMAPINFOHEADER);
    m_bmInfo.bmiHeader.biSizeImage=0;
    m_bmInfo.bmiHeader.biWidth=0;
    m_bmInfo.bmiHeader.biXPelsPerMeter=1;
    m_bmInfo.bmiHeader.biYPelsPerMeter=1;
}

CTransJpegView::~CTransJpegView()
{
}

BEGIN_MESSAGE_MAP(CTransJpegView, CScrollView)
	//{{AFX_MSG_MAP(CTransJpegView)
		// NOTE - the ClassWizard will add and remove mapping macros here.
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CTransJpegView drawing

void CTransJpegView::OnInitialUpdate()
{
	CScrollView::OnInitialUpdate();

	SetScrollSizes(MM_TEXT,CSize(0,0));
}

void CTransJpegView::OnDraw(CDC* pDC)
{
    DrawImg();
}

/////////////////////////////////////////////////////////////////////////////
// CTransJpegView diagnostics

#ifdef _DEBUG
void CTransJpegView::AssertValid() const
{
	CScrollView::AssertValid();
}

void CTransJpegView::Dump(CDumpContext& dc) const
{
	CScrollView::Dump(dc);
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CTransJpegView message handlers

void CTransJpegView::OnUpdate(CView* pSender, LPARAM lHint, CObject* pHint) 
{
	CTransClientDoc* pDoc=(CTransClientDoc*)GetDocument();
	SetScrollSizes(MM_TEXT,CSize(pDoc->m_ImgWidth,pDoc->m_ImgHeight));
	Invalidate(TRUE);
}

void CTransJpegView::DrawImg()
{
	CTransClientDoc* pDoc=(CTransClientDoc*)GetDocument();
	if (pDoc->m_pDib==NULL || pDoc->m_ImgWidth<=0 || pDoc->m_ImgHeight<=0)
		return;
	m_bmInfo.bmiHeader.biWidth=pDoc->m_ImgWidth;
	m_bmInfo.bmiHeader.biHeight=pDoc->m_ImgHeight;
	CDC* pDC=GetDC();
    ::SetDIBitsToDevice(pDC->GetSafeHdc(),
            0,
            0,
            m_bmInfo.bmiHeader.biWidth,
            m_bmInfo.bmiHeader.biHeight,
            0,
            0,
            0,
            m_bmInfo.bmiHeader.biHeight,
            pDoc->m_pDib,
            &m_bmInfo,
            DIB_RGB_COLORS);
    if (pDoc->m_Frequency>0 && pDoc->m_Bps>0){
		pDC->SetTextColor(RGB(0,255,0));
		pDC->SetBkColor(RGB(0,0,0));
		char str[15];
        DWORD FrequencyTmp=(pDoc->m_Frequency[0]+pDoc->m_Frequency[1]+pDoc->m_Frequency[2])/3;
		sprintf(str,"fps %.2f",(FrequencyTmp)>0?(float)1000/(FrequencyTmp):0);
		::TextOut(pDC->m_hDC,10,10,str,strlen(str));
        DWORD BpsTmp=(pDoc->m_Bps[0]+pDoc->m_Bps[1]+pDoc->m_Bps[2])/3;
        sprintf(str,"bps %.2fK",(float)BpsTmp/1024);
        ::TextOut(pDC->m_hDC,10,30,str,strlen(str)); 
    }
    ReleaseDC(pDC);
}