bxfiledialog.cpp

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//////////////////////////////////////////////////////////////////////////
// BXFileDialog.cpp : implementation file
// 
// Windows 2000 / Office 2000 style file dialog.
// 
// This WILL work on Win 95 / 98 / NT 4 / NT 5 (2000) / WinME
// 
// Original code by Norm Almond []
//					David Wulff [[e-mail]]
// 
// Update History:
//    07 Sep 2000 - David Wulff, Opps, I lost the previous update history.
//    08 Sep 2000 - David Wulff, Lots of changes, most significant is the
//                  .. addition of an optional preview panel, allowing you
//                  .. to preview bitmap images before opening/saving.
//    14 Oct 2000 - Joel Bernard, Provided a better CenterWindow function.
//                  David Wulff, Fixed memory leaks, added support for
//                  .. previewing non-bitmap images. (code by Wes Rogers)
//                  Other misc. changes.
//                  Anatoly Danekin, Shortcut path resolution.
//    13 Dec 2000 - David Wulff, Added Visual Studio .NET look
//    24 Mar 2001 - David Wulff, miscellaneous drawing updates
//                  Tak^Shoran, working sizing support for Win 98/2000
//                  Identified very bad flickering problem
//    31 Mar 2001 - David Wulff, Fixed resizing so it will work for dialogs
//                  .. with preview panels.  Tidied up all of the code (it
//                  .. was a big mess) and added standard function headers.
//                  .. Removed compile-time only modification of sizing
//                  .. support and VS.NET style
//    27 Jul 2001 - David Wulff, now when you select a non-image file, or
//                  .. a folder, the preview pane is cleared.  Added a
//                  .. handler for the CDN_TYPECHANGE message, so you can
//                  .. customise the OK button's drop-down menu.
//    03 Aug 2001 - David Wulff, added new functions to allow you to modify
//                  .. the listctrl view type during runtime.
//    04 Aug 2001 - David Wulff, only selects a sidebar button if the
//                  .. directory is selected.  Misc changes.
//////////////////////////////////////////////////////////////////////////
// Note, all dates given in this file are in the standard UK format (D:M:Y)

#include "stdafx.h"
#include <winuser.h>
#include <dlgs.h>
#include "BXFileDialog_Priv.h"

#include "BXFileDialog.h"
#include "BXFileDialog_Res.h"


//define _USE_HTMLHELP		// uncomment to have context help for the sidebar.
#define CONTROL_GAP		5	// the default 'gap' between controls

#ifdef _USE_HTMLHELP
	#include <htmlhelp.h>
	#pragma comment ( lib, "htmlhelp.lib" )
	#pragma message ("  NOTE: HTMLHelp support is included.")
#endif

#define ID_SHOW_PREVIEW		3420 // this is the ID for the "preview?" checkbox

BOOL BXFileDialog::m_bClear = FALSE;
TCHAR BXFileDialog::m_szFile[] = {"\0"};

BOOL bDotNetUI = FALSE;

#pragma warning ( disable : 4244 ) // float -> int conversion warnings

/////////////////////////////////////////////////////////////////////////////
// BXFileDialog

IMPLEMENT_DYNAMIC(BXFileDialog, CFileDialog)
BEGIN_MESSAGE_MAP(BXFileDialog, CFileDialog)
//{{AFX_MSG_MAP(BXFileDialog)
ON_WM_SIZE()
ON_WM_HELPINFO()
ON_WM_MEASUREITEM()
ON_BN_CLICKED(IDC_CHECK_PREVIEW, OnClickedPreview)
ON_BN_CLICKED(ID_SHOW_PREVIEW, OnShowPreview)
ON_WM_PAINT()
//}}AFX_MSG_MAP
ON_COMMAND(ID_BTN_HISTORY, OnHistoryClicked)
ON_COMMAND(ID_BTN_PERSONAL, OnPersonalClicked)
ON_COMMAND(ID_BTN_DESKTOP, OnDesktopClicked)
ON_COMMAND(ID_BTN_FAVORITES, OnFavoritesClicked)
ON_COMMAND(ID_BTN_WEBFOLDERS, OnWebFoldersClicked)
ON_COMMAND_RANGE(ID_START, ID_END, OnMyOk)
ON_COMMAND(IDOK, OnOk)
END_MESSAGE_MAP()

/************************************************************************/
/*  BXFileDialog														*/
/*																		*/
/*  Created:     31:3:2001												*/
/*  Author:      David Wulff, Norm Almond								*/
/*  Description: Class constructor										*/
/*	Revisions:	 														*/
/************************************************************************/
BXFileDialog::BXFileDialog(BOOL bOpenFileDialog, BOOL bPreview, BOOL bSizing,
						   LPCTSTR lpszDefExt, LPCTSTR lpszFileName,
						   DWORD dwFlags, LPCTSTR lpszFilter,
						   CWnd* pParentWnd) :
CFileDialog(bOpenFileDialog, lpszDefExt, lpszFileName, dwFlags,
			lpszFilter, pParentWnd)
{
	m_IsOpen = bOpenFileDialog;
	m_bShowPreview = m_bPreview = bPreview;
	m_bFirst = TRUE;

	m_ofn.hInstance         = GetBXFileDialogDll()->hModule;
	m_ofn.lpTemplateName    = MAKEINTRESOURCE(IDD_WIN2K_FILEDIALOG);
	m_ofn.Flags             = dwFlags | OFN_EXPLORER | OFN_ENABLETEMPLATE |
								OFN_ENABLEHOOK | OFN_HIDEREADONLY |
								(bSizing ? OFN_ENABLESIZING : 0);
}

/************************************************************************/
/*  ~BXFileDialog														*/
/*																		*/
/*  Created:     31:3:2001												*/
/*  Author:      David Wulff, Norm Almond								*/
/*  Description: Class destructor										*/
/*	Revisions:	 														*/
/************************************************************************/
BXFileDialog::~BXFileDialog()
{
}

/************************************************************************/
/*  OnInitDialog														*/
/*																		*/
/*  Created:     31:3:2001												*/
/*  Author:      David Wulff, Norm Almond								*/
/*  Description: WM_INITDIALOG handler									*/
/*	Revisions:	 														*/
/************************************************************************/
BOOL BXFileDialog::OnInitDialog() 
{
	CFileDialog::OnInitDialog();
	
	// create the imagelist and load the sidebar icons
	m_IL.Create(IDB_ICONS, 32, 1, RGB(255, 0, 255));
	
	// center this dialog on the main window
	CWnd* pMainWnd = AfxGetMainWnd();
	CenterWindowOnOwner(pMainWnd);
	
	// store the width of the static control (set it via the dialog editor)
	CWnd* pWndOutLookBar = GetDlgItem(IDC_OUTLOOK_BAR_PLACEHOLDER);
	CRect rcOLBClient;
	pWndOutLookBar->GetClientRect(rcOLBClient);
	m_SBWidth = rcOLBClient.Width();
	
	return TRUE;
}

/************************************************************************/
/*  OnNotify															*/
/*																		*/
/*  Created:     31:3:2001												*/
/*  Author:      David Wulff, Norm Almond								*/
/*  Description: WM_NOTIFY handler										*/
/*	Revisions:															*/
/************************************************************************/
BOOL BXFileDialog::OnNotify(WPARAM wParam, LPARAM lParam, LRESULT* pResult)
{
	OFNOTIFY* pNotify = (OFNOTIFY*)lParam;
	
	switch(pNotify->hdr.code)
	{
	case CDN_INITDONE:
		{
			SetActiveButton(&m_btnPersonal);
			m_edtFile.SubclassDlgItem(edt1,GetParent());

			OnFileTypeChange(m_ofn.nFilterIndex);

			return TRUE;
		}
		
		// [DW]: Remind me why we need these again?  CFileDialog already
		// .. provides these handlers, so why replace them? [4/8/2001]
	case CDN_SELCHANGE:
		{
			// the listctrl selection has changed
			OnFileNameChange();
			return TRUE;
		}
		
	case CDN_FOLDERCHANGE:
		{
			// the 'root' folder has changed
			OnFolderChange();
			return TRUE;
		}
		
	case CDN_TYPECHANGE:
		{
			// the file type/s to view has changed
			OnFileTypeChange(pNotify->lpOFN->nFilterIndex);
			return TRUE;
		}
	}
	
	return FALSE;
}

/************************************************************************/
/*  GetListCtrl															*/
/*																		*/
/*  Created:     03:8:2001												*/
/*  Author:      David Wulff											*/
/*  Description: Helper function to return the listctrl					*/
/*	Revisions:	 														*/
/************************************************************************/
CListCtrl* BXFileDialog::GetListCtrl()
{
	CListCtrl* pLCtrl;
	BOOL bWin2k = FALSE;
	OSVERSIONINFO osvi;
	osvi.dwOSVersionInfoSize = sizeof(osvi);
	
	::GetVersionEx(&osvi);
	
	// TODO [DW]: Check to see which one is needed for Windows ME [3/8/2001]
	
	if (osvi.dwPlatformId == VER_PLATFORM_WIN32_NT &&
		osvi.dwMajorVersion == 5)
		bWin2k = TRUE;
	
	// ok, here's the deal:  On Windows 2000, the listctrl we want is a child
	// .. of another, custom, control.  So, if we are running on Windows 2000,
	// .. we will need to take this into account.
	
	// THIS TOOK ME FOUR DAYS TO FIND!  Dammit Microsoft - why can't you stick
	// .. to your own guidelines?  Thank God for Spy++!
	
	if (bWin2k)
	{
		CWnd *pWnd = GetParent()->GetDlgItem(lst2);
		pLCtrl = (CListCtrl*)pWnd->GetDlgItem(1);
	}
	else
		pLCtrl = (CListCtrl*)GetParent()->GetDlgItem(lst1);
	
	return pLCtrl;
}

/************************************************************************/
/*  SetListCtrlView														*/
/*																		*/
/*  Created:     03:8:2001												*/
/*  Author:      David Wulff											*/
/*  Description: Set the listctrl style during runtime					*/
/*	Revisions:	 														*/
/************************************************************************/
void BXFileDialog::SetListCtrlView(DWORD dwNewStyle)
{
	CListCtrl* pLCtrl = GetListCtrl();
	DWORD dwStyle = GetWindowLong (pLCtrl->GetSafeHwnd(), GWL_STYLE);
	
	// TODO [DW]: LVS_REPORT doesn't work properly! [3/8/2001]
	if ((dwStyle & LVS_TYPEMASK) != dwNewStyle)
		SetWindowLong (pLCtrl->GetSafeHwnd(), GWL_STYLE,
		(dwStyle & ~LVS_TYPEMASK) | dwNewStyle);
}

/************************************************************************/
/*  GetActiveButton														*/
/*																		*/
/*  Created:     07:8:2001												*/
/*  Author:      David Wulff											*/
/*  Description: Returns a pointer to the acitve sidebar button			*/
/*	Revisions:	 														*/
/************************************************************************/
BXSelBtn* BXFileDialog::GetActiveButton()
{
	static TCHAR szPath[MAX_PATH];
	LPITEMIDLIST lpIDList;
	
	// "History"
	SHGetSpecialFolderLocation(0, CSIDL_RECENT, &lpIDList);
	SHGetPathFromIDList(lpIDList, szPath);
	
	if (GetFolderPath().CompareNoCase(CString(szPath)) == 0)
		return &m_btnHistory;
	
	// "Favourites"
	SHGetSpecialFolderLocation(0, CSIDL_FAVORITES, &lpIDList);
	SHGetPathFromIDList(lpIDList, szPath);
	
	if (GetFolderPath().CompareNoCase(CString(szPath)) == 0)
		return &m_btnFavourites;
	
	// "My Documents"
	SHGetSpecialFolderLocation(0, CSIDL_PERSONAL, &lpIDList);
	SHGetPathFromIDList(lpIDList, szPath);
	
	if (GetFolderPath().CompareNoCase(CString(szPath)) == 0)
		return &m_btnPersonal;
	
	// "Desktop"
	SHGetSpecialFolderLocation(0, CSIDL_DESKTOP, &lpIDList);
	SHGetPathFromIDList(lpIDList, szPath);
	
	if (GetFolderPath().CompareNoCase(CString(szPath)) == 0)
		return &m_btnDeskTop;
	
	// "Network Neighbourhood"
	SHGetSpecialFolderLocation(0, CSIDL_NETHOOD, &lpIDList);
	SHGetPathFromIDList(lpIDList, szPath);
	
	if (GetFolderPath().CompareNoCase(CString(szPath)) == 0)
		return &m_btnWebFolders;

	return NULL; // we are not in a 'default' directory
}

/************************************************************************/
/*  OnFileNameChange													*/
/*																		*/
/*  Created:     31:3:2001												*/
/*  Author:      David Wulff											*/
/*  Description: Called when the file name is changed or a new file is	*/
/*				 .. selected.											*/
/*	Revisions:	 27:7:2001 - David Wulff, Clears the preview panel when	*/
/*				 .. the selection changes								*/
/************************************************************************/
void BXFileDialog::OnFileNameChange()
{
	CString strFilePath = (LPCSTR)GetPathName();
	SHFILEINFO shfi;
	CListCtrl* pLCtrl = GetListCtrl();
	POSITION pos = pLCtrl->GetFirstSelectedItemPosition();

	// we wont bother checking for multiple selections, as we can't preview
	// .. mulitple files!
	if (pos != NULL)
	{
		CString strSelName = pLCtrl->GetItemText(pLCtrl->GetNextSelectedItem(pos), 0);
		
		// HACK [DW]: Not the best way to do this! [3/8/2001]
		if (strSelName.Find(_T(".")) == -1)
		{
			if(m_bPreview)
				m_strPreviewPath = _T("\0"); // set image file to null
			
			InvalidateRect(PreviewRect);

			return;
		}
	}
	
	if (!GetFileName().IsEmpty())
	{
		// if we have selected a shortcut, we must resolve it first
		if (SHGetFileInfo((LPCSTR)strFilePath, 0, &shfi, sizeof(shfi),
			SHGFI_DISPLAYNAME | SHGFI_TYPENAME) &&
			!lstrcmp(shfi.szTypeName, "Shortcut"))
		{
			ResolveShortcut(strFilePath);
		}
		
		if(m_bPreview)
			m_strPreviewPath = strFilePath;
		
		InvalidateRect(PreviewRect);
	}
}

/************************************************************************/
/*  OnFolderChange														*/
/*																		*/
/*  Created:     31:3:2001												*/
/*  Author:      David Wulff											*/
/*  Description: Called when the folder is changed						*/
/*	Revisions:	 04:8:2001 - David Wulff, only select a sidebar button	*/
/*				 .. after initialisation if the directory is selected	*/
/************************************************************************/
void BXFileDialog::OnFolderChange()
{
	// if a 'default' directory is selected, activate the appropriate
	// .. sidebar button
	SetActiveButton(GetActiveButton());
}

/************************************************************************/
/*  OnClickedPreview													*/
/*																		*/
/*  Created:     31:3:2001												*/
/*  Author:      David Wulff											*/
/*  Description: Called when the 'Preview'	checkbox is clicked			*/
/*	Revisions:	 														*/
/************************************************************************/
void BXFileDialog::OnClickedPreview()
{
	m_bPreview = checkBox.GetCheck() == 1 ? TRUE : FALSE;
}

/************************************************************************/
/*  OnPaint																*/
/*																		*/
/*  Created:     31:3:2001												*/
/*  Author:      David Wulff											*/
/*  Description: WM_PAINT handler										*/
/*	Revisions:	 														*/
/************************************************************************/
void BXFileDialog::OnPaint() 
{
	CPaintDC dc(this);
	
	// if we are drawing the image preview, draw a 3D border to simulate
	// .. a preview control, and render the image within in
	if (m_bShowPreview)
	{
		// deflate rect to include border
		CRect rect(PreviewRect.left + 1, PreviewRect.top + 1,
			PreviewRect.right - 1, PreviewRect.bottom - 1);
		
		dc.Draw3dRect(&PreviewRect,::GetSysColor(COLOR_BTNSHADOW),
			::GetSysColor(COLOR_BTNHILIGHT));
		
		if(m_bPreview)
			DrawImage(&dc, m_strPreviewPath, PreviewRect.CenterPoint(),
			GetParent()->m_hWnd, rect);
	}
	
	// if we are using the VS.NET UI style, we must draw the sidebar
	// .. border ourselves
	if (!bDotNetUI)
	{
		CRect rcWnd;
		CWnd* pWndOutLookBar = GetDlgItem(IDC_OUTLOOK_BAR_PLACEHOLDER);
		
		pWndOutLookBar->GetWindowRect(&rcWnd);
		ScreenToClient(&rcWnd);
		rcWnd.top += (m_btnHeight * 5);
		
		dc.Draw3dRect(&rcWnd, ::GetSysColor(COLOR_BTNSHADOW),
			::GetSysColor(COLOR_BTNHILIGHT));
		dc.FillRect(&rcWnd, &CBrush(::GetSysColor(COLOR_APPWORKSPACE)));
	}
}

/************************************************************************/
/*  OnHistoryClicked													*/
/*																		*/
/*  Created:     31:3:2001												*/
/*  Author:      David Wulff											*/
/*  Description: Called when the specified side bar button is clicked	*/
/*	Revisions:	 														*/