A fast and lightweight cell control

// MyCell - version 1.0
// Written by Yanxueming <yanxm2003@hotmail.com>
// Copyright (C) 2006-2006
// All rights reserved.
//
// The code and information is provided "as-is" without
// warranty of any kind, either expressed or implied.

//Yanxm 2007��12��25�� 18:02:11
#include "stdafx.h"
#include "../include/Workbook.h"
namespace mycell{
	bool HasFocus(HWND hWnd)
	{
		HWND const hWndFocus=GetFocus();
		for(;hWnd;hWnd=GetParent(hWnd)){
			if(hWndFocus==hWnd)
				return true;
		}
		return false;
	}
	void GetWndUpdateRgn(HWND hWnd, CRgnLight& rgnValue)
	{
		HRGN hRgn = CreateRectRgn(0, 0, 0, 0);
		if (hRgn)
		{
			switch (GetUpdateRgn(hWnd, hRgn, FALSE))
			{
			case SIMPLEREGION:
			case COMPLEXREGION:
				rgnValue.FromGdi(hRgn);
			}
			DeleteObject(hRgn);
		}
	}

	BEGIN_MSG_MAP_CPP(GridWnd)
		MESSAGE_HANDLER(WM_CREATE,OnCreate)
		//MESSAGE_HANDLER(WM_POSTCREATE,OnPostCreate)
		MESSAGE_HANDLER(WM_SIZE,OnSize)
		if(pSheet_){
			MESSAGE_HANDLER(WM_GETDLGCODE,OnGetDlgCode)
			MESSAGE_HANDLER(WM_KILLFOCUS,OnKillFocus)
			//MESSAGE_HANDLER(WM_SHOWWINDOW,OnShowWindow)
			//MESSAGE_HANDLER(WM_VSCROLL,OnVScroll)
			//MESSAGE_HANDLER(WM_HSCROLL,OnHScroll)
			//MESSAGE_HANDLER(WM_MOUSEWHEEL, OnMouseWheel)
			MESSAGE_HANDLER(WM_KEYDOWN,OnKeyEvent)
			MESSAGE_HANDLER(WM_CHAR,OnKeyEvent)
			MESSAGE_HANDLER(WM_IME_COMPOSITION,OnImeComposition)
			MESSAGE_HANDLER(WM_MOUSEMOVE, pSheet_->OnMouseEvent)
			MESSAGE_HANDLER(WM_LBUTTONDBLCLK, pSheet_->OnMouseEvent)
			MESSAGE_HANDLER(WM_LBUTTONDOWN, pSheet_->OnMouseEvent)
			MESSAGE_HANDLER(WM_LBUTTONUP, pSheet_->OnMouseEvent)
			MESSAGE_HANDLER(WM_RBUTTONDOWN, pSheet_->OnMouseEvent)
			MESSAGE_HANDLER(WM_RBUTTONUP, pSheet_->OnMouseEvent)
			//MESSAGE_HANDLER(WM_THEMECHANGED, OnThemeChanged)
			MESSAGE_HANDLER(WM_PAINT,OnPaint)
		}
	END_MSG_MAP()

	void GridWnd::ChangeCursor(const CELLHITTESTINFO& chi)
	{
		if(!HasFocus(m_hWnd)){
			SetCursor(cf_.standardCursor);
			return;
		}
		if(CHTC_ON_DRAGCORNER&chi.flags){
			if(pSheet_->get_ShowSelection())
				SetCursor(cf_.crossCursor.get());
			else
				SetCursor(cf_.standardCursor);
		}else if(CHTC_ON_COLDIVIDER&chi.flags){
			SetCursor(cf_.sizeWECursor);
		}else if(CHTC_ON_ROWDIVIDER&chi.flags){
			SetCursor(cf_.sizeNSCursor);
		}else
			SetCursor(cf_.standardCursor);
	}

	LRESULT GridWnd::OnPaint(UINT,WPARAM,LPARAM,BOOL&)
	{
		//if(!pSheet_)
		//	return 0;
		CRgnLight rgnClip;
		GetWndUpdateRgn(m_hWnd,rgnClip);
		rgnClip.Optimize();

		CPaintDC dc(m_hWnd);
		//pSheet_->Draw(dc,gridRender_,rgnClip);
		//const RowHeader& rh=pSheet_->get_RowHeader();
		//const ColHeader& ch=pSheet_->get_ColHeader();
		RECT rcli;
		GetClientRect(&rcli);
		const CellAxisInfo& cai=pSheet_->get_CellAxisInfo();
		_ASSERT(cai.HRemainAxis>=0);
		gridRender_.draw(pSheet_,&cai,dc,&rcli,&rgnClip);
		return 0;
	}
	//LRESULT GridWnd::OnShowWindow(UINT,WPARAM wParam,LPARAM,BOOL&)
	//{
	//	if(wParam){
	//		RECT rc;
	//		pSheet_->GetClientRect(&rc);
	//		pSheet_->Scroll_ResetHScrollBar(&rc);
	//		pSheet_->Scroll_ResetVScrollBar(&rc);
	//	}
	//	return 0;
	//}
	LRESULT GridWnd::OnKillFocus(UINT,WPARAM,LPARAM,BOOL&)
		{
			if(Worksheet::tooltip_.second.IsWindow())
				Worksheet::tooltip_.second.TrackActivate(&Worksheet::tooltip_.first,FALSE);
			Worksheet::tooltipCell_.set(-100,-100);
			return 0;
		}
	LRESULT GridWnd::OnSize(UINT,WPARAM,LPARAM lParam,BOOL&)
	{
		if(pSheet_){
			const WORD cx=LOWORD(lParam);
			const WORD cy=HIWORD(lParam);
			if(!cx || !cy) return 0;
			const RECT rc={0,0,cx,cy};
			pSheet_->RecalcCellAxisInfo(rc,CCAI_CALC_ALL);
			const CellAxisInfo& cai=pSheet_->get_CellAxisInfo();
			pSheet_->put_LeftVisScrollCol(pSheet_->get_ColHeader().get_LeftVisScrollCol(),&cai);
			pSheet_->put_TopVisScrollRow(pSheet_->get_RowHeader().get_TopVisScrollRow(),&cai);
			pSheet_->Scroll_ResetHScrollBar(/*TRUE,TRUE,*/&rc);
			pSheet_->Scroll_ResetVScrollBar(/*TRUE,TRUE,*/&rc);
		}
		return 0;
	}
	HRESULT GridWnd::SendNotifyMessageToListener(int nRow, int nCol, int nNotifyCode,LPARAM lParam,BOOL* pbHandled) const
	{
		return pSheet_->GetWorkbook()->SendNotifyMessageToListener(nRow,nCol,nNotifyCode,lParam,pbHandled);
	}
	LRESULT GridWnd::OnImeComposition(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
	{
		//if(!pSheet_)
		//	return 0;
		const CCell cell=pSheet_->GetActiveCell();
		const ECellType ctype=(ECellType)pSheet_->GetCellType(cell).cellType;
		CComPtr<ICellEditor> pEditor=pSheet_->GetWorkbook()->GetTypeFactory().GetEditor(ctype);
		if(pEditor){
			CComVariant vText;
			pSheet_->GetCellText(cell,&vText,EGCVD_EDIT);
			pEditor->OnImeComposition(cell,&vText,wParam,lParam,(VARIANT_BOOL*)&bHandled);
		}
		return 0;
	}

	LRESULT GridWnd::OnKeyEvent(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
	{
		//if(!pSheet_)
		//	return 0;
		const CCell cell=pSheet_->GetActiveCell();
		KeyDownInfo kdi(wParam,lParam);
		SendNotifyMessageToListener(cell.row,cell.col,OCN_BASE+uMsg,(LPARAM)&kdi,&bHandled);
		if(!bHandled){
			if(WM_KEYDOWN==uMsg)
				pSheet_->selectionImp_.OnKeyDown(uMsg,wParam,lParam,bHandled);
			else if(WM_CHAR==uMsg){
				const ECellType ctype=(ECellType)pSheet_->GetCellType(cell).cellType;
				CComPtr<ICellEditor> pEditor=pSheet_->GetWorkbook()->GetTypeFactory().GetEditor(ctype);
				if(pEditor){
					CComVariant vText;
					pSheet_->GetCellText(cell,&vText,EGCVD_EDIT);
					pEditor->OnChar(cell,&vText,wParam,lParam,(VARIANT_BOOL*)&bHandled);
				}
			}
		}
		return bHandled?0:1;
	}
	LRESULT GridWnd::OnCreate(UINT,WPARAM,LPARAM lParam,BOOL& bHandled)
	{
#pragma warning( disable : 4312 )
		cf_.standardCursor=(HCURSOR)SetClassLong(m_hWnd,GCL_HCURSOR,NULL);
		if(!cf_.standardCursor){
			cf_.standardCursor=LoadCursor(NULL,IDC_ARROW);
		}
#pragma warning( default : 4312 )
		gridRender_.Init(m_hWnd);
		CreateTT();
		//PostMessage(WM_POSTCREATE);
		return 0;
	}
	//LRESULT GridWnd::OnPostCreate(UINT,WPARAM,LPARAM lParam,BOOL& bHandled)
	//{
	//	if(pSheet_){
	//		RECT rc;
	//		pSheet_->GetClientRect(&rc);
	//		pSheet_->Scroll_ResetHScrollBar(&rc);
	//		pSheet_->Scroll_ResetVScrollBar(&rc);
	//	}
	//	return 0;
	//}
	void GridWnd::SetWorksheet(Worksheet* pSheet)
	{
		pSheet_=pSheet;
		if(m_hWnd){
			pSheet_->m_hWnd=m_hWnd;
			pSheet_->Refresh();
		}
	}

	void GridWnd::CreateTT()
	{
#pragma warning( disable : 4311 )
		if(Worksheet::tooltip_.second.m_hWnd!=NULL)
			return;
		_ASSERT(Worksheet::tooltip_.second.m_hWnd==NULL);
		//_ASSERT(!tooltip_.IsWindow());
		Worksheet::tooltip_.second.Create(m_hWnd, rcDefault, NULL, WS_POPUP ,0);
		Worksheet::tooltip_.second.SetTipBkColor(RGB(0xcc,0xcc,0xff));
		Worksheet::tooltip_.first.cbSize	=sizeof(TOOLINFO);			
		Worksheet::tooltip_.first.uFlags	=TTF_IDISHWND | TTF_TRACK | TTF_ABSOLUTE;
		Worksheet::tooltip_.first.hwnd	=m_hWnd;
		Worksheet::tooltip_.first.uId		= (UINT)Worksheet::tooltip_.second.m_hWnd;
		Worksheet::tooltip_.first.lpszText  = Workbook::tooltipText_;
		Worksheet::tooltip_.first.hinst  = _Module.GetResourceInstance();
		SetRect(&Worksheet::tooltip_.first.rect,0,0,0,0);
		Worksheet::tooltip_.second.AddTool(&Worksheet::tooltip_.first);
		Worksheet::tooltip_.second.TrackActivate(&Worksheet::tooltip_.first,FALSE);
#pragma warning( default : 4311 )
	}

}//namespace mycell