previewex.cpp

磁盘容量扫描、但界面和程序结构非常不错

// PreviewEx.cpp : implementation file
//
// Replaces MFC print preview toolbar with a prettier one
//
// Copyright (c) 1999 Robin J. Leatherbarrow, Erithacus Software Limited
// 
// Use and distribute freely, except: don't remove my name from the
// source or documentation; mark your changes; don't alter
// or remove this notice.
// No warranty of any kind, express or implied, is included with this
// software; use at your own risk, responsibility for damages (if any) to
// anyone resulting from the use of this software rests entirely with the
// user.
//
// Send bug reports, bug fixes, enhancements, requests, etc.,
// and I'll try to keep a version up to date.  I can be reached at:
//    [e-mail]
//
// Usage: 
//		1. #include "PreviewEx.h" into your view class
//		2. Add PreviewEx.cpp and MappedBitmapButton.cpp to your project
//		3. Copy the above resources to your .RC file
//		4. Add the following message handler to your view class
//		   When called you get the improved print preview
//
//void CYourView::OnFileImprovedprintpreview() 
//{
//	// need to use CPreviewViewEx class
//	CPrintPreviewState* pState = new CPrintPreviewState;
//
//	if (!DoPrintPreview(IDD_PREVIEW, this, RUNTIME_CLASS(CPreviewViewEx), pState))
//	{
//		TRACE0("Error: OnFileImprovedprintpreview failed.\n");
//		AfxMessageBox(AFX_IDP_COMMAND_FAILURE);
//		delete pState;      // preview failed to initialize, delete State now
//	}
//}
//


#include "stdafx.h"
#include "afxpriv.h"
#include "afxres.h"
#include "PreviewEx.h"
#include "resource.h"

IMPLEMENT_DYNCREATE(CPreviewViewEx, CPreviewView)

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

/////////////////////////////////////////////////////////////////////////////
// CPreviewViewEx


CPreviewViewEx::CPreviewViewEx()
{
}

CPreviewViewEx::~CPreviewViewEx()
{
}

void CPreviewViewEx::OnDisplayPageNumber(UINT nPage, UINT nPagesDisplayed)
{
	CPreviewView::OnDisplayPageNumber( nPage, nPagesDisplayed );
}

void CPreviewViewEx::OnPreviewPrint()
{
	CPreviewView::OnPreviewPrint();
}

BEGIN_MESSAGE_MAP(CPreviewViewEx, CPreviewView)
	//{{AFX_MSG_MAP(CPreviewViewEx)
	ON_WM_CREATE()
	//}}AFX_MSG_MAP
	ON_COMMAND(AFX_ID_PREVIEW_PRINT, OnPreviewPrint)
	ON_UPDATE_COMMAND_UI(AFX_ID_PREVIEW_NUMPAGE, OnUpdateNumPageChange)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CPreviewViewEx drawing

/////////////////////////////////////////////////////////////////////////////
// CPreviewViewEx diagnostics

#ifdef _DEBUG
void CPreviewViewEx::AssertValid() const
{
	CPreviewView::AssertValid();
}

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

/////////////////////////////////////////////////////////////////////////////
// CPreviewViewEx message handlers

void CPreviewViewEx::OnUpdateNumPageChange(CCmdUI* pCmdUI)
{
	UINT nPages = m_nZoomState == ZOOM_OUT ? m_nPages : m_nZoomOutPages;

	if (m_bOne) {
		if (nPages == 1) {
			// need to swap to show 2 pages
			//m_onetwo.LoadBitmap( IDB_PREV_TWO );
			m_bOne = false;
			m_wndOnetwo.SetIcon((m_bOne)?m_hIconOne:m_hIconTwo, 16, 16);
			m_wndOnetwo.Invalidate();
			}
		}
	else {
		if (nPages != 1) {
			// need to swap to show 1 page
			//m_onetwo.LoadBitmap( IDB_PREV_ONE );
			m_bOne = true;
			m_wndOnetwo.SetIcon((m_bOne)?m_hIconOne:m_hIconTwo, 16, 16);
			m_wndOnetwo.Invalidate();
			}
		}
	// enable it only if valid to display another page and not zoomed
	//pCmdUI->Enable(m_nZoomState == ZOOM_OUT && m_nMaxPages != 1 &&
	//	(m_pPreviewInfo->GetMaxPage() > 1 || m_nPages > 1));
	CPreviewView::OnUpdateNumPageChange(pCmdUI);

	
}

int CPreviewViewEx::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	if (CPreviewView::OnCreate(lpCreateStruct) == -1)
		return -1;

	m_pToolBar->EnableToolTips( TRUE );

	m_bOne = true;

	m_wndPrint.SubclassDlgItem(AFX_ID_PREVIEW_PRINT,m_pToolBar);
	m_wndNext.SubclassDlgItem(AFX_ID_PREVIEW_NEXT,m_pToolBar);
	m_wndPrevious.SubclassDlgItem(AFX_ID_PREVIEW_PREV,m_pToolBar);
	m_wndOnetwo.SubclassDlgItem(AFX_ID_PREVIEW_NUMPAGE,m_pToolBar);
	m_wndZoomIn.SubclassDlgItem(AFX_ID_PREVIEW_ZOOMIN,m_pToolBar);
	m_wndZoomOut.SubclassDlgItem(AFX_ID_PREVIEW_ZOOMOUT,m_pToolBar);
	m_wndClose.SubclassDlgItem(AFX_ID_PREVIEW_CLOSE,m_pToolBar);

	m_wndPrint.ModifyFlag(CFlatButton::FBS_FOCUS|CFlatButton::FBS_BORDER, CFlatButton::FBS_HAS_ICON);
	m_wndPrevious.ModifyFlag(CFlatButton::FBS_FOCUS|CFlatButton::FBS_BORDER, CFlatButton::FBS_HAS_ICON);
	m_wndNext.ModifyFlag(CFlatButton::FBS_FOCUS|CFlatButton::FBS_BORDER, CFlatButton::FBS_HAS_ICON);
	m_wndOnetwo.ModifyFlag(CFlatButton::FBS_FOCUS|CFlatButton::FBS_BORDER, CFlatButton::FBS_HAS_ICON);
	m_wndZoomIn.ModifyFlag(CFlatButton::FBS_FOCUS|CFlatButton::FBS_BORDER, CFlatButton::FBS_HAS_ICON);
	m_wndZoomOut.ModifyFlag(CFlatButton::FBS_FOCUS|CFlatButton::FBS_BORDER, CFlatButton::FBS_HAS_ICON);
	m_wndClose.ModifyFlag(CFlatButton::FBS_FOCUS|CFlatButton::FBS_BORDER, NULL);

	CImageList imgList;
	HINSTANCE hIns = AfxGetResourceHandle();	
	AfxSetResourceHandle(AfxGetInstanceHandle());	
	imgList.Create(IDB_PRIVIEW, 16, 1, RGB(255, 0, 255));
	
	m_wndPrint.SetIcon(imgList.ExtractIcon(0), 16, 16);
	m_wndPrevious.SetIcon(imgList.ExtractIcon(1), 16, 16);
	m_wndNext.SetIcon(imgList.ExtractIcon(2), 16, 16);
	m_wndZoomIn.SetIcon(imgList.ExtractIcon(5), 16, 16);
	m_wndZoomOut.SetIcon(imgList.ExtractIcon(6), 16, 16);
	
	m_hIconOne = imgList.ExtractIcon(3);
	m_hIconTwo = imgList.ExtractIcon(4);
	m_wndOnetwo.SetIcon(m_hIconOne, 16, 16);
	AfxSetResourceHandle(hIns);		
	
	return 0;
}