treepropsheet.cpp

VeryCD版的电驴源程序

		if ((signed)m_pwndPageTree->GetItemData(hItem) == nPage)
			return hItem;
		if (m_pwndPageTree->ItemHasChildren(hItem))
		{
			HTREEITEM	hResult = GetPageTreeItem(nPage, m_pwndPageTree->GetNextItem(hItem, TVGN_CHILD));
			if (hResult)
				return hResult;
		}

		hItem = m_pwndPageTree->GetNextItem(hItem, TVGN_NEXT);
	}

	// we've found nothing, if we arrive here
	return hItem;
}


BOOL CTreePropSheet::SelectPageTreeItem(int nPage)
{
	HTREEITEM	hItem = GetPageTreeItem(nPage);
	if (!hItem)
		return FALSE;

	return m_pwndPageTree->SelectItem(hItem);
}


BOOL CTreePropSheet::SelectCurrentPageTreeItem()
{
	CTabCtrl	*pTab = GetTabControl();
	if (!IsWindow(pTab->GetSafeHwnd()))
		return FALSE;

	return SelectPageTreeItem(pTab->GetCurSel());
}


void CTreePropSheet::UpdateCaption()
{
	HWND			hPage = PropSheet_GetCurrentPageHwnd(GetSafeHwnd());
	BOOL			bRealPage = IsWindow(hPage) && ::IsWindowVisible(hPage);
	HTREEITEM	hItem = m_pwndPageTree->GetSelectedItem();
	if (!hItem)
		return;
	CString		strCaption = m_pwndPageTree->GetItemText(hItem);

	// if empty page, then update empty page message
	if (!bRealPage)
		m_pFrame->SetMsgText(GenerateEmptyPageMessage(m_strEmptyPageMessage, strCaption));

	// if no captions are displayed, cancel here
	if (!m_pFrame->GetShowCaption())
		return;

	// get tab control, to the the images from
	CTabCtrl	*pTabCtrl = GetTabControl();
	if (!IsWindow(pTabCtrl->GetSafeHwnd()))
	{
		ASSERT(FALSE);
		return;
	}

	if (m_bTreeImages)
	{
		// get image from tree
		int	nImage;
		m_pwndPageTree->GetItemImage(hItem, nImage, nImage);
		HICON	hIcon = m_Images.ExtractIcon(nImage);
		m_pFrame->SetCaption(strCaption, hIcon);
		if (hIcon)
			DestroyIcon(hIcon);
	}
	else if (bRealPage)
	{
		// get image from hidden (original) tab provided by the original
		// implementation
		CImageList	*pImages = pTabCtrl->GetImageList();
		if (pImages)
		{
			TCITEM	ti;
			ZeroMemory(&ti, sizeof(ti));
			ti.mask = TCIF_IMAGE;

			HICON	hIcon = NULL;
			if (pTabCtrl->GetItem((int)m_pwndPageTree->GetItemData(hItem), &ti))
				hIcon = pImages->ExtractIcon(ti.iImage);

			m_pFrame->SetCaption(strCaption, hIcon);
			if (hIcon)
				DestroyIcon(hIcon);
		}
		else
			m_pFrame->SetCaption(strCaption);
	}
	else
		m_pFrame->SetCaption(strCaption);
}


void CTreePropSheet::ActivatePreviousPage()
{
	if (!IsWindow(m_hWnd))
		return;

	if (!IsWindow(m_pwndPageTree->GetSafeHwnd()))
	{
		// normal tab property sheet. Simply use page index
		int	nPageIndex = GetActiveIndex();
		if (nPageIndex<0 || nPageIndex>=GetPageCount())
			return;

		int	nPrevIndex = (nPageIndex==0)? GetPageCount()-1 : nPageIndex-1;
		SetActivePage(nPrevIndex);
	}
	else
	{
		// property sheet with page tree.
		// we need a more sophisticated handling here, than simply using
		// the page index, because we won't skip empty pages.
		// so we have to walk the page tree
		HTREEITEM	hItem = m_pwndPageTree->GetSelectedItem();
		ASSERT(hItem);
		if (!hItem)
			return;

		HTREEITEM	hPrevItem = NULL;
		if (hPrevItem=m_pwndPageTree->GetPrevSiblingItem(hItem))
		{
			while (m_pwndPageTree->ItemHasChildren(hPrevItem))
			{
				hPrevItem = m_pwndPageTree->GetChildItem(hPrevItem);
				while (m_pwndPageTree->GetNextSiblingItem(hPrevItem))
					hPrevItem = m_pwndPageTree->GetNextSiblingItem(hPrevItem);
			}
		}
		else 
			hPrevItem=m_pwndPageTree->GetParentItem(hItem);

		if (!hPrevItem)
		{
			// no prev item, so cycle to the last item
			hPrevItem = m_pwndPageTree->GetRootItem();

			while (TRUE)
			{
				while (m_pwndPageTree->GetNextSiblingItem(hPrevItem))
					hPrevItem = m_pwndPageTree->GetNextSiblingItem(hPrevItem);

				if (m_pwndPageTree->ItemHasChildren(hPrevItem))
					hPrevItem = m_pwndPageTree->GetChildItem(hPrevItem);
				else
					break;
			}
		}

		if (hPrevItem)
			m_pwndPageTree->SelectItem(hPrevItem);
	}
}


void CTreePropSheet::ActivateNextPage()
{
	if (!IsWindow(m_hWnd))
		return;

	if (!IsWindow(m_pwndPageTree->GetSafeHwnd()))
	{
		// normal tab property sheet. Simply use page index
		int	nPageIndex = GetActiveIndex();
		if (nPageIndex<0 || nPageIndex>=GetPageCount())
			return;

		int	nNextIndex = (nPageIndex==GetPageCount()-1)? 0 : nPageIndex+1;
		SetActivePage(nNextIndex);
	}
	else
	{
		// property sheet with page tree.
		// we need a more sophisticated handling here, than simply using
		// the page index, because we won't skip empty pages.
		// so we have to walk the page tree
		HTREEITEM	hItem = m_pwndPageTree->GetSelectedItem();
		ASSERT(hItem);
		if (!hItem)
			return;

		HTREEITEM	hNextItem = NULL;
		if (hNextItem=m_pwndPageTree->GetChildItem(hItem))
			;
		else if (hNextItem=m_pwndPageTree->GetNextSiblingItem(hItem))
			;
		else if (m_pwndPageTree->GetParentItem(hItem))
		{
			while (!hNextItem)
			{
				hItem = m_pwndPageTree->GetParentItem(hItem);
				if (!hItem)
					break;

				hNextItem	= m_pwndPageTree->GetNextSiblingItem(hItem);
			}
		}

		if (!hNextItem)
			// no next item -- so cycle to the first item
			hNextItem = m_pwndPageTree->GetRootItem();

		if (hNextItem)
			m_pwndPageTree->SelectItem(hNextItem);
	}
}


/////////////////////////////////////////////////////////////////////
// Overridings

BOOL CTreePropSheet::OnInitDialog() 
{
	if (m_bTreeViewMode)
	{

		// be sure, there are no stacked tabs, because otherwise the
		// page caption will be to large in tree view mode
		EnableStackedTabs(FALSE);

		// Initialize image list.
		if (m_DefaultImages.GetSafeHandle())
		{
			IMAGEINFO	ii;
			m_DefaultImages.GetImageInfo(0, &ii);
			if (ii.hbmImage) DeleteObject(ii.hbmImage);
			if (ii.hbmMask) DeleteObject(ii.hbmMask);
			m_Images.Create(ii.rcImage.right-ii.rcImage.left, ii.rcImage.bottom-ii.rcImage.top, theApp.m_iDfltImageListColorFlags|ILC_MASK, 0, 1);
		}
		else
			m_Images.Create(16, 16, theApp.m_iDfltImageListColorFlags|ILC_MASK, 0, 1);
	}

	// perform default implementation
	BOOL bResult = CPropertySheet::OnInitDialog();

	if (!m_bTreeViewMode)
		// stop here, if we would like to use tabs
		return bResult;

	// Get tab control...
	CTabCtrl	*pTab = GetTabControl();
	if (!IsWindow(pTab->GetSafeHwnd()))
	{
		ASSERT(FALSE);
		return bResult;
	}

	HighColorTab::UpdateImageList(*this);

	// ... and hide it
	pTab->ShowWindow(SW_HIDE);
	pTab->EnableWindow(FALSE);

	// Place another (empty) tab ctrl, to get a frame instead
	CRect	rectFrame;
	pTab->GetWindowRect(rectFrame);
	ScreenToClient(rectFrame);

	m_pFrame = CreatePageFrame();
	if (!m_pFrame)
	{
		ASSERT(FALSE);
		AfxThrowMemoryException();
	}
	m_pFrame->Create(WS_CHILD|WS_VISIBLE|WS_CLIPSIBLINGS, rectFrame, this, 0xFFFF);
	m_pFrame->ShowCaption(m_bPageCaption);

	// Lets make place for the tree ctrl
	const int	nTreeWidth = m_nPageTreeWidth;
	const int	nTreeSpace = 5;

	CRect	rectSheet;
	GetWindowRect(rectSheet);
	rectSheet.right+= nTreeWidth;
	SetWindowPos(NULL, -1, -1, rectSheet.Width(), rectSheet.Height(), SWP_NOZORDER|SWP_NOMOVE);
	CenterWindow();

	MoveChildWindows(nTreeWidth, 0);

	// Lets calculate the rectangle for the tree ctrl
	CRect	rectTree(rectFrame);
	rectTree.right = rectTree.left + nTreeWidth - nTreeSpace;

	// calculate caption height
	CTabCtrl	wndTabCtrl;
	wndTabCtrl.Create(WS_CHILD|WS_VISIBLE|WS_CLIPSIBLINGS, rectFrame, this, 0x1234);
	wndTabCtrl.InsertItem(0, _T(""));
	CRect	rectFrameCaption;
	wndTabCtrl.GetItemRect(0, rectFrameCaption);
	wndTabCtrl.DestroyWindow();
	m_pFrame->SetCaptionHeight(rectFrameCaption.Height());

	// if no caption should be displayed, make the window smaller in
	// height
	if (!m_bPageCaption)
	{
		// make frame smaller
		m_pFrame->GetWnd()->GetWindowRect(rectFrame);
		ScreenToClient(rectFrame);
		rectFrame.top+= rectFrameCaption.Height();
		m_pFrame->GetWnd()->MoveWindow(rectFrame);

		// move all child windows up
		MoveChildWindows(0, -rectFrameCaption.Height());

		// modify rectangle for the tree ctrl
		rectTree.bottom-= rectFrameCaption.Height();

		// make us smaller
		CRect	rect;
		GetWindowRect(rect);
		rect.top+= rectFrameCaption.Height()/2;
		rect.bottom-= rectFrameCaption.Height()-rectFrameCaption.Height()/2;
		if (GetParent())
			GetParent()->ScreenToClient(rect);
		MoveWindow(rect);
	}

	// finally create tht tree control
	const DWORD	dwTreeStyle = TVS_SHOWSELALWAYS/*|TVS_TRACKSELECT*/|TVS_HASLINES/*|TVS_LINESATROOT*/|TVS_HASBUTTONS;
	m_pwndPageTree = CreatePageTreeObject();
	if (!m_pwndPageTree)
	{
		ASSERT(FALSE);
		AfxThrowMemoryException();
	}

	// MFC7-support here (Thanks to Rainer Wollgarten)
	#if _MFC_VER >= 0x0700
	{
		// Using 'CTreeCtrl::CreateEx' (and it's indeed a good idea to call this one), results in
		// flawed window styles (border is missing) when running under WinXP themed.. ???
		//m_pwndPageTree->CreateEx(
		//	WS_EX_CLIENTEDGE|WS_EX_NOPARENTNOTIFY, 
		//	WS_TABSTOP|WS_CHILD|WS_VISIBLE|dwTreeStyle, 
		//	rectTree, this, s_unPageTreeId);

		// Feel free to explain to me why we need to call CWnd::CreateEx to get the proper window style
		// for the tree view control when running under WinXP. Look at CTreeCtrl::CreateEx and CWnd::CreateEx to
		// see the (minor) difference. However, this could create problems in future MFC versions..
		m_pwndPageTree->CWnd::CreateEx(
			WS_EX_CLIENTEDGE|WS_EX_NOPARENTNOTIFY,
			WC_TREEVIEW, _T("PageTree"),
			WS_TABSTOP|WS_CHILD|WS_VISIBLE|dwTreeStyle,
			rectTree, this, s_unPageTreeId);
	}
	#else
	{
		m_pwndPageTree->CreateEx(
			WS_EX_CLIENTEDGE|WS_EX_NOPARENTNOTIFY, 
			_T("SysTreeView32"), _T("PageTree"), 
			WS_TABSTOP|WS_CHILD|WS_VISIBLE|dwTreeStyle, 
			rectTree, this, s_unPageTreeId);
	}
	#endif
	
	m_pwndPageTree->SetItemHeight(m_pwndPageTree->GetItemHeight() + 6);

	if (m_bTreeImages)
	{
		m_pwndPageTree->SetImageList(&m_Images, TVSIL_NORMAL);
		m_pwndPageTree->SetImageList(&m_Images, TVSIL_STATE);
	}

	// Fill the tree ctrl
	RefillPageTree();

	// Select item for the current page
	if (pTab->GetCurSel() > -1)
		SelectPageTreeItem(pTab->GetCurSel());

	return bResult;
}


void CTreePropSheet::OnDestroy() 
{
	CPropertySheet::OnDestroy();
	
	if (m_Images.GetSafeHandle())
		m_Images.DeleteImageList();

	if (m_pwndPageTree)
	{
		VERIFY( m_pwndPageTree->DestroyWindow() );
		delete m_pwndPageTree;
		m_pwndPageTree = NULL;
	}

	if (m_pFrame)
	{
		VERIFY( m_pFrame->GetWnd()->DestroyWindow() );
		delete m_pFrame;
		m_pFrame = NULL;
	}
}


LRESULT CTreePropSheet::OnAddPage(WPARAM wParam, LPARAM lParam)
{
	LRESULT	lResult = DefWindowProc(PSM_ADDPAGE, wParam, lParam);
	if (!m_bTreeViewMode)
		return lResult;

	RefillPageTree();
	SelectCurrentPageTreeItem();

	return lResult;
}


LRESULT CTreePropSheet::OnRemovePage(WPARAM wParam, LPARAM lParam)
{
	LRESULT	lResult = DefWindowProc(PSM_REMOVEPAGE, wParam, lParam);
	if (!m_bTreeViewMode)
		return lResult;

	RefillPageTree();
	SelectCurrentPageTreeItem();

	return lResult;
}


LRESULT CTreePropSheet::OnSetCurSel(WPARAM wParam, LPARAM lParam)
{
	LRESULT	lResult = DefWindowProc(PSM_SETCURSEL, wParam, lParam);
	if (!m_bTreeViewMode)
		return lResult;

	SelectCurrentPageTreeItem();
	UpdateCaption();
	return lResult;
}


LRESULT CTreePropSheet::OnSetCurSelId(WPARAM wParam, LPARAM lParam)
{
	LRESULT	lResult = DefWindowProc(PSM_SETCURSEL, wParam, lParam);
	if (!m_bTreeViewMode)
		return lResult;

	SelectCurrentPageTreeItem();
	UpdateCaption();
	return lResult;
}


void CTreePropSheet::OnPageTreeSelChanging(NMHDR *pNotifyStruct, LRESULT *plResult)
{
	*plResult = 0;
	if (m_bPageTreeSelChangedActive)
		return;
	else
		m_bPageTreeSelChangedActive = TRUE;

	NMTREEVIEW	*pTvn = reinterpret_cast<NMTREEVIEW*>(pNotifyStruct);
	int					nPage = m_pwndPageTree->GetItemData(pTvn->itemNew.hItem);
	BOOL				bResult;
	if (nPage<0 || (unsigned)nPage>=m_pwndPageTree->GetCount())
		bResult = KillActiveCurrentPage();
	else
		bResult = SetActivePage(nPage);

	if (!bResult)
		// prevent selection to change
		*plResult = TRUE;

	// Set focus to tree ctrl (I guess that's what the user expects)
	m_pwndPageTree->SetFocus();

	m_bPageTreeSelChangedActive = FALSE;

	return;
}


void CTreePropSheet::OnPageTreeSelChanged(NMHDR *pNotifyStruct, LRESULT *plResult)
{
	*plResult = 0;

	UpdateCaption();

	return;
}


LRESULT CTreePropSheet::OnIsDialogMessage(WPARAM wParam, LPARAM lParam)
{
	MSG	*pMsg = reinterpret_cast<MSG*>(lParam);
	if (pMsg->message==WM_KEYDOWN && pMsg->wParam==VK_TAB && GetKeyState(VK_CONTROL)&0x8000)
	{
		if (GetKeyState(VK_SHIFT)&0x8000)
			ActivatePreviousPage();
		else
			ActivateNextPage();
		return TRUE;
	}


	return CPropertySheet::DefWindowProc(PSM_ISDIALOGMESSAGE, wParam, lParam);
}

//} //namespace TreePropSheet