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// ResizableSheet.cpp : implementation file
//
/////////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2000-2002 by Paolo Messina
// (http://www.geocities.com/ppescher - ppescher@yahoo.com)
//
// The contents of this file are subject to the Artistic License (the "License").
// You may not use this file except in compliance with the License.
// You may obtain a copy of the License at:
// http://www.opensource.org/licenses/artistic-license.html
//
// If you find this code useful, credits would be nice!
//
/////////////////////////////////////////////////////////////////////////////
#include "stdafx.h"
#include "ResizableSheet.h"
/////////////////////////////////////////////////////////////////////////////
// CResizableSheet
IMPLEMENT_DYNAMIC(CResizableSheet, CPropertySheet)
inline void CResizableSheet::PrivateConstruct()
{
m_bEnableSaveRestore = FALSE;
m_bSavePage = FALSE;
m_dwGripTempState = 1;
}
CResizableSheet::CResizableSheet()
{
PrivateConstruct();
}
CResizableSheet::CResizableSheet(UINT nIDCaption, CWnd *pParentWnd, UINT iSelectPage)
: CPropertySheet(nIDCaption, pParentWnd, iSelectPage)
{
PrivateConstruct();
}
CResizableSheet::CResizableSheet(LPCTSTR pszCaption, CWnd *pParentWnd, UINT iSelectPage)
: CPropertySheet(pszCaption, pParentWnd, iSelectPage)
{
PrivateConstruct();
}
CResizableSheet::~CResizableSheet()
{
}
BEGIN_MESSAGE_MAP(CResizableSheet, CPropertySheet)
//{{AFX_MSG_MAP(CResizableSheet)
ON_WM_GETMINMAXINFO()
ON_WM_SIZE()
ON_WM_DESTROY()
ON_WM_CREATE()
ON_WM_ERASEBKGND()
//}}AFX_MSG_MAP
ON_NOTIFY_REFLECT_EX(PSN_SETACTIVE, OnPageChanging)
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CResizableSheet message handlers
int CResizableSheet::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
if(CPropertySheet::OnCreate(lpCreateStruct) == -1)
return -1;
// keep client area
CRect rect;
GetClientRect(&rect);
// set resizable style
ModifyStyle(DS_MODALFRAME, WS_POPUP | WS_THICKFRAME);
// adjust size to reflect new style
::AdjustWindowRectEx(&rect, GetStyle(),
::IsMenu(GetMenu()->GetSafeHmenu()), GetExStyle());
SetWindowPos(NULL, 0, 0, rect.Width(), rect.Height(), SWP_FRAMECHANGED |
SWP_NOMOVE | SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOREPOSITION);
// create and init the size-grip
if(!CreateSizeGrip())
return -1;
return 0;
}
BOOL CResizableSheet::OnInitDialog()
{
BOOL bResult = CPropertySheet::OnInitDialog();
// set the initial size as the min track size
CRect rc;
GetWindowRect(&rc);
SetMinTrackSize(rc.Size());
// initialize layout
PresetLayout();
// prevent flickering
GetTabControl()->ModifyStyle(0, WS_CLIPSIBLINGS);
return bResult;
}
void CResizableSheet::OnDestroy()
{
if(m_bEnableSaveRestore)
{
SaveWindowRect(m_sSection, m_bRectOnly);
SavePage();
}
RemoveAllAnchors();
CPropertySheet::OnDestroy();
}
// maps an index to a button ID and vice-versa
static UINT _propButtons[] =
{
IDOK, IDCANCEL, ID_APPLY_NOW, IDHELP,
ID_WIZBACK, ID_WIZNEXT, ID_WIZFINISH
};
const int _propButtonsCount = sizeof(_propButtons) / sizeof(UINT);
// horizontal line in wizard mode
#define ID_WIZLINE ID_WIZFINISH+1
void CResizableSheet::PresetLayout()
{
if(IsWizard()) // wizard mode
{
// hide tab control
GetTabControl()->ShowWindow(SW_HIDE);
AddAnchor(ID_WIZLINE, BOTTOM_LEFT, BOTTOM_RIGHT);
}
else // tab mode
{
AddAnchor(AFX_IDC_TAB_CONTROL, TOP_LEFT, BOTTOM_RIGHT);
}
// add a callback for active page (which can change at run-time)
AddAnchorCallback(1);
// use *total* parent size to have correct margins
CRect rectPage, rectSheet;
GetTotalClientRect(&rectSheet);
GetActivePage()->GetWindowRect(&rectPage);
::MapWindowPoints(NULL, m_hWnd, (LPPOINT)&rectPage, 2);
// pre-calculate margins
m_sizePageTL = rectPage.TopLeft() - rectSheet.TopLeft();
m_sizePageBR = rectPage.BottomRight() - rectSheet.BottomRight();
// add all possible buttons, if they exist
for(int i = 0; i < _propButtonsCount; i++)
{
if(NULL != GetDlgItem(_propButtons[i]))
AddAnchor(_propButtons[i], BOTTOM_RIGHT);
}
}
BOOL CResizableSheet::ArrangeLayoutCallback(LayoutInfo &layout)
{
if(layout.nCallbackID != 1) // we only added 1 callback
return CResizableLayout::ArrangeLayoutCallback(layout);
// set layout info for active page
layout.hWnd = (HWND)::SendMessage(m_hWnd, PSM_GETCURRENTPAGEHWND, 0, 0);
if(!::IsWindow(layout.hWnd))
return FALSE;
// set margins
if(IsWizard()) // wizard mode
{
// use pre-calculated margins
layout.sizeMarginTL = m_sizePageTL;
layout.sizeMarginBR = m_sizePageBR;
}
else // tab mode
{
CTabCtrl* pTab = GetTabControl();
ASSERT(pTab != NULL);
// get tab position after resizing and calc page rect
CRect rectPage, rectSheet;
GetTotalClientRect(&rectSheet);
VERIFY(GetAnchorPosition(pTab->m_hWnd, rectSheet, rectPage));
pTab->AdjustRect(FALSE, &rectPage);
// set margins
layout.sizeMarginTL = rectPage.TopLeft() - rectSheet.TopLeft();
layout.sizeMarginBR = rectPage.BottomRight() - rectSheet.BottomRight();
}
// set anchor types
layout.sizeTypeTL = TOP_LEFT;
layout.sizeTypeBR = BOTTOM_RIGHT;
// use this layout info
return TRUE;
}
void CResizableSheet::OnSize(UINT nType, int cx, int cy)
{
CWnd::OnSize(nType, cx, cy);
if(nType == SIZE_MAXHIDE || nType == SIZE_MAXSHOW)
return; // arrangement not needed
if(nType == SIZE_MAXIMIZED)
HideSizeGrip(&m_dwGripTempState);
else
ShowSizeGrip(&m_dwGripTempState);
// update grip and layout
UpdateSizeGrip();
ArrangeLayout();
}
BOOL CResizableSheet::OnPageChanging(NMHDR* /*pNotifyStruct*/, LRESULT* /*pResult*/)
{
// update new wizard page
// active page changes after this notification
PostMessage(WM_SIZE);
return FALSE; // continue routing
}
BOOL CResizableSheet::OnEraseBkgnd(CDC* pDC)
{
// Windows XP doesn't like clipping regions ...try this!
EraseBackground(pDC);
return TRUE;
/* ClipChildren(pDC); // old-method (for safety)
return CPropertySheet::OnEraseBkgnd(pDC);
*/
}
void CResizableSheet::OnGetMinMaxInfo(MINMAXINFO FAR* lpMMI)
{
MinMaxInfo(lpMMI);
}
// protected members
int CResizableSheet::GetMinWidth()
{
CWnd* pWnd = NULL;
CRect rectWnd, rectSheet;
GetTotalClientRect(&rectSheet);
int max = 0, min = rectSheet.Width();
// search for leftmost and rightmost button margins
for(int i = 0; i < 7; i++)
{
pWnd = GetDlgItem(_propButtons[i]);
// exclude not present or hidden buttons
if(pWnd == NULL || !(pWnd->GetStyle() & WS_VISIBLE))
continue;
// left position is relative to the right border
// of the parent window (negative value)
pWnd->GetWindowRect(&rectWnd);
::MapWindowPoints(NULL, m_hWnd, (LPPOINT)&rectWnd, 2);
int left = rectSheet.right - rectWnd.left;
int right = rectSheet.right - rectWnd.right;
if(left > max)
max = left;
if(right < min)
min = right;
}
// sizing border width
int border = GetSystemMetrics(SM_CXSIZEFRAME);
// compute total width
return max + min + 2 * border;
}
// NOTE: this must be called after all the other settings
// to have the window and its controls displayed properly
void CResizableSheet::EnableSaveRestore(LPCTSTR pszSection, BOOL bRectOnly, BOOL bWithPage)
{
m_sSection = pszSection;
m_bSavePage = bWithPage;
m_bEnableSaveRestore = TRUE;
m_bRectOnly = bRectOnly;
// restore immediately
LoadWindowRect(pszSection, bRectOnly);
LoadPage();
}
// private memebers
// used to save/restore active page
// either in the registry or a private .INI file
// depending on your application settings
#define ACTIVEPAGE _T("ActivePage")
void CResizableSheet::SavePage()
{
if(!m_bSavePage)
return;
// saves active page index, zero (the first) if problems
// cannot use GetActivePage, because it always fails
CTabCtrl *pTab = GetTabControl();
int page = 0;
if(pTab != NULL)
page = pTab->GetCurSel();
if(page < 0)
page = 0;
AfxGetApp()->WriteProfileInt(m_sSection, ACTIVEPAGE, page);
}
void CResizableSheet::LoadPage()
{
// restore active page, zero (the first) if not found
int page = AfxGetApp()->GetProfileInt(m_sSection, ACTIVEPAGE, 0);
if(m_bSavePage)
{
SetActivePage(page);
ArrangeLayout(); // needs refresh
}
}
void CResizableSheet::RefreshLayout()
{
SendMessage(WM_SIZE);
}
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