lyfz_repos/经典版源码/旧的后台处理/LYFZIPManage/PrintPreview.cpp

// PrintPreview.cpp : implementation file
//

#include "stdafx.h"
#include "LYFZIPManage.h"
#include "PrintPreview.h"

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

/////////////////////////////////////////////////////////////////////////////
// PrintPreview dialog


PrintPreview::PrintPreview(CWnd* pParent /*=NULL*/)
	: CDialog(PrintPreview::IDD, pParent)
{
	//{{AFX_DATA_INIT(PrintPreview)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	m_pDC=NULL;
	m_rc.right =0;
}


void PrintPreview::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(PrintPreview)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(PrintPreview, CDialog)
	//{{AFX_MSG_MAP(PrintPreview)
	ON_WM_CLOSE()
	ON_WM_PAINT()
	ON_BN_CLICKED(IDC_BUTTON1, OnButton1)
	ON_BN_CLICKED(IDC_BUTTON2, OnButton2)
	ON_BN_CLICKED(IDC_BUTTON3, OnButton3)
	ON_WM_MOUSEWHEEL()
	ON_WM_LBUTTONDOWN()
	ON_WM_LBUTTONUP()
	ON_BN_CLICKED(IDC_BUTTON4, OnButton4)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// PrintPreview message handlers

void PrintPreview::OnOK() 
{
	// TODO: Add extra validation here
	
	CDialog::OnOK();
}

void PrintPreview::OnCancel() 
{
	// TODO: Add extra cleanup here
}

void PrintPreview::OnClose() 
{
	// TODO: Add your message handler code here and/or call default
	
	CDialog::OnCancel();
}

BOOL PrintPreview::OnInitDialog() 
{
	CDialog::OnInitDialog();
	
	// TODO: Add extra initialization here
	DEVMODE dm;
	dm.dmSize = sizeof(DEVMODE) ;
	EnumDisplaySettings(NULL,ENUM_CURRENT_SETTINGS,&dm);
	::SetWindowPos(m_hWnd,HWND_TOP,0 ,0,dm.dmPelsWidth,dm.dmPelsHeight,SWP_SHOWWINDOW); 

	CRect rc,rc2;
	GetClientRect(rc);
	RectFitDes(m_w,m_h, rc);
	GetDlgItem(IDOK)->GetWindowRect(rc2);
	ScreenToClient(rc2);
	int wid=rc2.Width ();
	rc2.right =rc.left -10;
	rc2.left =rc2.right -wid;
	GetDlgItem(IDOK)->MoveWindow(rc2);

	GetDlgItem(IDC_BUTTON1)->GetWindowRect(rc2);
	ScreenToClient(rc2);
	rc2.right =rc.left -10;
	rc2.left =rc2.right -wid;
	GetDlgItem(IDC_BUTTON1)->MoveWindow(rc2);

	GetDlgItem(IDC_BUTTON2)->GetWindowRect(rc2);
	ScreenToClient(rc2);
	rc2.right =rc.left -10;
	rc2.left =rc2.right -wid;
	GetDlgItem(IDC_BUTTON2)->MoveWindow(rc2);
	GetDlgItem(IDC_BUTTON3)->GetWindowRect(rc2);
	ScreenToClient(rc2);
	rc2.right =rc.left -10;
	rc2.left =rc2.right -wid;
	GetDlgItem(IDC_BUTTON3)->MoveWindow(rc2);

	GetDlgItem(IDC_BUTTON4)->GetWindowRect(rc2);
	ScreenToClient(rc2);
	rc2.right =rc.left -10;
	rc2.left =rc2.right -wid;
	GetDlgItem(IDC_BUTTON4)->MoveWindow(rc2);
	return TRUE;  // return TRUE unless you set the focus to a control
	              // EXCEPTION: OCX Property Pages should return FALSE
}

void PrintPreview::OnPaint() 
{
	CPaintDC dc(this); // device context for painting
	
	// TODO: Add your message handler code here
	if(m_pDC)
	{
	CRect rc;
	GetClientRect(rc);
	if(m_rc.right ==0)
	{
		m_rc=rc;
//////////
    float fscale=(float)m_w/(float)m_h;
	float rcscale=((float)m_rc.Width ())/((float)m_rc.Height ());
	int rcwid=m_rc.Width ();
	int rchei=m_rc.Height ();
    int dt=0;
	if(rcscale<fscale)
	{
		dt=(rchei-rcwid/fscale)/2;
		m_rc.top+=dt;
		m_rc.bottom-=dt;
	}
	else
	{
		dt=(rcwid-rchei*fscale)/2;
		m_rc.left +=dt;
		m_rc.right-=dt;
	}
	}
 
	dc.StretchBlt (m_rc.left ,m_rc.top ,m_rc.Width (), m_rc.Height (), m_pDC, 0, 0, m_w,m_h, SRCCOPY);
	}
	// Do not call CDialog::OnPaint() for painting messages
}

void PrintPreview::OnButton1() 
{
	// TODO: Add your control notification handler code here
	CDialog::OnCancel ();
}

void PrintPreview::OnButton2() 
{
	// TODO: Add your control notification handler code here
     CRect *pRc=&m_rc;
			int dtx;
			int dty;
			dtx=pRc->Width ()*0.1;
			dty=pRc->Height ()*0.1;
			pRc->left -= dtx;
			pRc->right += dtx;
			pRc->top -=  dty;

			
			pRc->bottom = pRc->top+pRc->Width ()*(m_h)/(m_w);
			Invalidate();	
}

void PrintPreview::OnButton3() 
{
	// TODO: Add your control notification handler code here
        CRect *pRc=&m_rc;
			int dtx;
			int dty;
			dtx=pRc->Width ()*0.1;
			dty=pRc->Height ()*0.1;
			if(dtx<10 || dty<10)return;
		 
			pRc->left += dtx;
			pRc->right -= dtx;
			pRc->top +=  dty;
			pRc->bottom = pRc->top+pRc->Width ()*(m_h)/(m_w);
			Invalidate();	
}

BOOL PrintPreview::OnMouseWheel(UINT nFlags, short zDelta, CPoint pt) 
{
	// TODO: Add your message handler code here and/or call default
	if(zDelta>0)
	{
	        CRect *pRc=&m_rc;
			int dtx;
			int dty;
			dtx=pRc->Width ()*0.1;
			dty=pRc->Height ()*0.1;
			pRc->left -= dtx;
			pRc->right += dtx;
			pRc->top -=  dty;
			pRc->bottom = pRc->top+pRc->Width ()*(m_h)/(m_w);
			Invalidate();
	}
	else
	{
	        CRect *pRc=&m_rc;
			int dtx;
			int dty;
			dtx=pRc->Width ()*0.1;
			dty=pRc->Height ()*0.1;
			if(dtx<10 || dty<10)return 1;
		 
			pRc->left += dtx;
			pRc->right -= dtx;
			pRc->top +=  dty;
			pRc->bottom = pRc->top+pRc->Width ()*(m_h)/(m_w);
			Invalidate();
	}
	return CDialog::OnMouseWheel(nFlags, zDelta, pt);
}

void PrintPreview::OnLButtonDown(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	SetCapture();
	m_startpt=point;
	CDialog::OnLButtonDown(nFlags, point);
}

void PrintPreview::OnLButtonUp(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	if(GetCapture()!=this)return;
	ReleaseCapture();
 	m_rc.left +=point.x-m_startpt.x;
 	m_rc.right +=point.x-m_startpt.x;
 	m_rc.top +=point.y-m_startpt.y;
 	m_rc.bottom +=point.y-m_startpt.y;
	m_startpt=point;
	Invalidate();
	CDialog::OnLButtonUp(nFlags, point);
}

void PrintPreview::OnButton4() 
{
	// TODO: Add your control notification handler code here
	m_rc.right =0;
	Invalidate();
}