Capture an HTML document as an image

// VTHtmlThumbnailDlg.cpp : implementation file
//

#include "stdafx.h"
#include "VTHtmlThumbnail.h"
#include "VTHtmlThumbnailDlg.h"
#include ".\vthtmlthumbnaildlg.h"
#include "VTCreateHTMLImage.h"

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

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAboutDlg)
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CVTHtmlThumbnailDlg dialog

CVTHtmlThumbnailDlg::CVTHtmlThumbnailDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CVTHtmlThumbnailDlg::IDD, pParent)
	, m_csStatus(_T(""))
{
	//{{AFX_DATA_INIT(CVTHtmlThumbnailDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);

	m_iDocumentsComplete = 0;
	m_pHTMLImage = NULL;
}

void CVTHtmlThumbnailDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CVTHtmlThumbnailDlg)
	// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
	DDX_Control(pDX, IDC_STATIC_THUMBNAIL, m_StaticThumbnail1);
	DDX_Control(pDX, IDC_STATIC_THUMBNAIL2, m_StaticThumbnail2);
	DDX_Control(pDX, IDC_STATIC_THUMBNAIL3, m_StaticThumbnail3);
	DDX_Control(pDX, IDC_STATIC_THUMBNAIL4, m_StaticThumbnail4);
	DDX_Control(pDX, IDC_STATIC_THUMBNAIL5, m_StaticThumbnail5);
	DDX_Control(pDX, IDC_STATIC_THUMBNAIL6, m_StaticThumbnail6);
	DDX_Text(pDX, IDC_STATIC_STATUS, m_csStatus);
}

BEGIN_MESSAGE_MAP(CVTHtmlThumbnailDlg, CDialog)
	//{{AFX_MSG_MAP(CVTHtmlThumbnailDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	//}}AFX_MSG_MAP
	ON_BN_CLICKED(IDC_BUTTON1, OnBnClickedButton1)
	ON_MESSAGE(UM_DOCUMENT_COMPLETE, OnDocumentComplete)
	ON_WM_DESTROY()
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CVTHtmlThumbnailDlg message handlers

BOOL CVTHtmlThumbnailDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	m_StaticThumbnail1.Create();
	m_StaticThumbnail2.Create();
	m_StaticThumbnail3.Create();
	m_StaticThumbnail4.Create();
	m_StaticThumbnail5.Create();
	m_StaticThumbnail6.Create();

	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CVTHtmlThumbnailDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CVTHtmlThumbnailDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CVTHtmlThumbnailDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CVTHtmlThumbnailDlg::OnBnClickedButton1()
{
	m_iDocumentsComplete = 0;
	m_csStatus.Format("Obtaining Thumbnails");
	UpdateData(FALSE);

	EnableButtons(FALSE);

	if(m_pHTMLImage)
		delete m_pHTMLImage;
	m_pHTMLImage = new CVTCreateHTMLImage();
	m_pHTMLImage->Create(this);
	if(m_pHTMLImage->CreateImage("http://www.codeproject.com", "c:\\codeproject.jpg", CSize(800, 600), CSize(120, 100)))
	{
		m_StaticThumbnail1.SetURL("http://www.codeproject.com");
		m_StaticThumbnail1.SetFilename("c:\\codeproject.jpg");
	}
	if(m_pHTMLImage->CreateImage("http://www.intel.com", "c:\\intel.jpg", CSize(800, 600), CSize(120, 100)))
	{
		m_StaticThumbnail2.SetURL("http://www.intel.com");
		m_StaticThumbnail2.SetFilename("c:\\intel.jpg");
	}
	if(m_pHTMLImage->CreateImage("http://www.dundas.com", "c:\\dundas.jpg", CSize(800, 600), CSize(120, 100)))
	{
		m_StaticThumbnail3.SetURL("http://www.dundas.com");
		m_StaticThumbnail3.SetFilename("c:\\dundas.jpg");
	}
	if(m_pHTMLImage->CreateImage("http://www.cnn.com", "c:\\cnn.jpg", CSize(800, 600), CSize(120, 100)))
	{
		m_StaticThumbnail4.SetURL("http://www.cnn.com");
		m_StaticThumbnail4.SetFilename("c:\\cnn.jpg");
	}
	if(m_pHTMLImage->CreateImage("http://www.apple.com", "c:\\apple.jpg", CSize(800, 600), CSize(120, 100)))
	{
		m_StaticThumbnail5.SetURL("http://www.apple.com");
		m_StaticThumbnail5.SetFilename("c:\\apple.jpg");
	}
	if(m_pHTMLImage->CreateImage("http://welcome.hp.com/country/us/en/prodserv/handheld.html", "c:\\ipaq.jpg", CSize(800, 600), CSize(320,240)))
	{
		m_StaticThumbnail6.SetURL("http://welcome.hp.com/country/us/en/prodserv/handheld.html");
		m_StaticThumbnail6.SetFilename("c:\\ipaq.jpg");
	}
}

LRESULT CVTHtmlThumbnailDlg::OnDocumentComplete(WPARAM wParam, LPARAM lParam)
{
	m_iDocumentsComplete++;

	if(m_iDocumentsComplete == 1)
		m_csStatus.Format("%ld Document Complete", m_iDocumentsComplete);
	else
		m_csStatus.Format("%ld Documents Complete", m_iDocumentsComplete);
	UpdateData(FALSE);

	if(m_iDocumentsComplete == 6)
		EnableButtons(TRUE);
	return 0L;
}
void CVTHtmlThumbnailDlg::EnableButtons(bool bEnable)
{
	GetDlgItem(IDOK)->EnableWindow(bEnable);
	GetDlgItem(IDCANCEL)->EnableWindow(bEnable);
	GetDlgItem(IDC_BUTTON1)->EnableWindow(bEnable);
}

void CVTHtmlThumbnailDlg::OnDestroy()
{
	CDialog::OnDestroy();

	if(m_pHTMLImage)
	{
		delete m_pHTMLImage;
		m_pHTMLImage = NULL;
	}
}