// The following command handler provides the standard keyboard
//  user interface to cancel an in-place editing session.  Here,
//  the container (not the server) causes the deactivation.
void CDrawView::OnCancelEditCntr()
{
	// Close any in-place active item on this view.
	COleClientItem* pActiveItem = GetDocument()->GetInPlaceActiveItem(this);
	if (pActiveItem != NULL)
	{
		pActiveItem->Close();
	}
	ASSERT(GetDocument()->GetInPlaceActiveItem(this) == NULL);
}

// Special handling of OnSetFocus and OnSize are required for a container
//  when an object is being edited in-place.
void CDrawView::OnSetFocus(CWnd* pOldWnd)
{
	COleClientItem* pActiveItem = GetDocument()->GetInPlaceActiveItem(this);
	if (pActiveItem != NULL &&
		pActiveItem->GetItemState() == COleClientItem::activeUIState)
	{
		// need to set focus to this item if it is in the same view
		CWnd* pWnd = pActiveItem->GetInPlaceWindow();
		if (pWnd != NULL)
		{
			pWnd->SetFocus();   // don't call the base class
			return;
		}
	}

	CView::OnSetFocus(pOldWnd);
}

//當(dāng)視圖的大小變化時被調(diào)用，cx,cy為變化后屏幕頂長、寬（像素）
void CDrawView::OnSize(UINT nType, int cx, int cy)
{
	CView::OnSize(nType, cx, cy);
	CDrawDoc *pDoc=(CDrawDoc *)GetDocument();
	p_Screen=pDoc->m_Screen;
	m_wScreen=cx;	
	m_hScreen=cy;
    nXPage=m_hScreen/nScrollMin;  //橫向一屏的滾動范圍
    nYPage=m_wScreen/nScrollMin; //縱向一屏的滾動范圍
	InitVScroll();
	InitHScroll();
}

/////////////////////////////////////////////////////////////////////////////
// CDrawView diagnostics

#ifdef _DEBUG
void CDrawView::AssertValid() const
{
	CView::AssertValid();
}

void CDrawView::Dump(CDumpContext& dc) const
{
	CView::Dump(dc);
}

CDrawDoc* CDrawView::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CDrawDoc)));
	return (CDrawDoc*)m_pDocument;
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CDrawView message handlers

void CDrawView::InitVScroll()
{
	//得到滾動條的最大范圍
	nVScrollMax=(int)(((float)m_hScreen*p_Screen[0].blc)/(blc*nScrollMin));
	//得到當(dāng)前的滾動條范圍
	nVScrollPos=nVScrollMax-(int)((m_yStart-p_Screen[0].sy)/(blc*nScrollMin));
	//設(shè)置滾動條最大范圍和當(dāng)前位置
	SetScrollRange(SB_VERT,0,nVScrollMax,TRUE);
	SetScrollPos(SB_VERT,nVScrollPos);//rrr.top=0;
	UpdateWindow();
}

void CDrawView::InitHScroll()
{
	
	//得到滾動條的最大范圍
	nHScrollMax=(int)(((float)m_hScreen*p_Screen[0].blc/blc)/nScrollMin);
	//得到當(dāng)前的滾動條范圍
	nHScrollPos=(int)((m_xStart-p_Screen[0].sx)/blc/nScrollMin);
	//設(shè)置滾動條最大范圍和當(dāng)前位置
	SetScrollRange(SB_HORZ,0,nHScrollMax,TRUE);
	SetScrollPos(SB_HORZ,nHScrollPos);//rrr.top=0;
	UpdateWindow();

}

//選中菜單“繪制圓弧”時被調(diào)用
void CDrawView::OnDrawArc() 
{
	PushNumb=0;			//鼠標(biāo)左鍵按下次數(shù)
	m_DrawCurrent=6;	//標(biāo)識進(jìn)行圓弧繪制操作
}

//選中菜單“繪制圓”時被調(diào)用
void CDrawView::OnDrawCircle() 
{
	PushNumb=0;			//鼠標(biāo)左鍵按下次數(shù)
	m_DrawCurrent=4;	//標(biāo)識進(jìn)行圓繪制操作
}

//選中菜單“繪制圓形區(qū)域”時被調(diào)用
void CDrawView::OnDrawCircle1() 
{
	PushNumb=0;			//鼠標(biāo)左鍵按下次數(shù)
	m_DrawCurrent=5;	//標(biāo)識進(jìn)行圓形區(qū)域操作
}

//選中菜單“繪制直線”時被調(diào)用
void CDrawView::OnDrawLine() 
{
	PushNumb=0;
	m_DrawCurrent=1;	//標(biāo)識進(jìn)行直線繪制操作
}

//選中菜單“繪制連續(xù)直線”時被調(diào)用
void CDrawView::OnDrawPline() 
{
	PushNumb=0;
	m_DrawCurrent=2;	//標(biāo)識進(jìn)行連續(xù)直線繪制操作
}

//選中菜單“繪制多邊形區(qū)域”時被調(diào)用
void CDrawView::OnDrawRgn() 
{
	PushNumb=0;
	m_DrawCurrent=3;	//標(biāo)識進(jìn)行多邊形區(qū)域繪制操作
}

//選中菜單“標(biāo)注文字”時被調(diào)用
void CDrawView::OnDrawText() 
{
	PushNumb=0;
	m_DrawCurrent=7;	//標(biāo)識進(jìn)行文字標(biāo)注操作
}

//在標(biāo)注文字對話框中填入文字時被調(diào)用在屏幕上寫文字
void CDrawView::DrawText()
{
	CClientDC ht(this);
	//以下從標(biāo)注文字對話框中得到字體參數(shù)
	m_TextString=pTextDlg->m_Text;
	m_FontHeight=pTextDlg->m_FontHeight;
	m_FontWide=pTextDlg->m_FontWide;
	m_TextAngle=pTextDlg->m_Angle1;
	m_FontAngle=pTextDlg->m_Angle2;
	m_FontBetween=pTextDlg->m_FontBetween;
	//對一個字體類的參數(shù)重新進(jìn)行輔值
	m_Text1->Init(m_pColor,m_brColor,m_LineWide,m_LineType,m_Layer,m_TextX,m_TextY
	,m_TextAngle,m_FontAngle,m_FontHeight,m_FontWide,m_FontBetween,0,m_TextString);
	m_Text1->Draw(&ht,0,0,m_bColor);//繪制標(biāo)注信息
}

//按‘確定'退出標(biāo)注文字對話框時被調(diào)用的函數(shù)，用來增加一個標(biāo)注文字項
void CDrawView::DrawTextOnOk()
{
	CDrawDoc* pDoc = GetDocument();
    CClientDC ht(this);    
	int TextLong;
	PushNumb=0;
	m_TextString=pTextDlg->m_Text;		//得到標(biāo)注的文字信息
	TextLong=m_TextString.GetLength();	//標(biāo)注文字的長度
	if(TextLong>0)
	{
		//增加并重新繪制標(biāo)注的文字
		int id=pDoc->GetTextId();
		pDoc->AddText(m_pColor,m_brColor,m_LineWide,m_LineType,m_Layer,id,m_TextX,
			m_TextY,m_TextAngle,m_FontAngle,m_FontHeight,m_FontWide,
			m_FontBetween,0,TextLong,m_TextString)
			->Draw(&ht,0,0,m_bColor);
		pTextDlg->m_Text.Empty();		//清空標(biāo)注文字對話框中編輯框中頂文字
		pTextDlg->SendMessage(WM_INITDIALOG);
		//以下是記錄增加標(biāo)注信息這一操作，供逆操作時用
		GraphUndo[0].Index=pDoc->GetMaxIndex(5);//此標(biāo)注文字的位置	
		GraphUndo[0].Lb=5;	//標(biāo)注文字
		pDoc->AddUndo(2,1,GraphUndo);
		ReleaseCapture();	//釋放捕捉的鼠標(biāo)
	}
}

//按‘放棄'退出標(biāo)注文字對話框時被調(diào)用的函數(shù)
void CDrawView::DrawTextOnCancel()
{
	pTextDlg->m_Text.Empty();	////清空標(biāo)注文字對話框中編輯框中頂文字
	pTextDlg->SendMessage(WM_INITDIALOG);
}

//按下鼠標(biāo)左鍵時被調(diào)用，ON_WM_LBUTTONDOWN消息的映射函數(shù)
void CDrawView::OnLButtonDown(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
    float r;
    float xx1,yy1,xx2,yy2;
	int x1,x2,y1,y2,Lb,Index,pbh;
	BOOL m_Fill;
	CDrawDoc* pDoc = GetDocument();	//得到文檔指針
    CClientDC ht(this);    
    if(m_DrawCurrent==1)	//如果正在繪制直線
	{
		if(PushNumb==0)		//如果是第一次按下左鼠標(biāo)鍵
		{
			PushNumb++;			//做標(biāo)記表示按下鼠標(biāo)左鍵一次
			mPointOrign=point;	//直線的第一點等于點中點
			mPointOld=point;	//記錄本次點中點
			SetCapture();		//捕捉鼠標(biāo)輸入
		}
		else if(PushNumb==1) //第二次按下左鼠標(biāo)鍵(即按下直線的結(jié)束點時)
		{
			//以下得到直線起終點的實際坐標(biāo)
			VPtoDP(mPointOrign.x,mPointOrign.y,&xx1,&yy1);
			VPtoDP(point.x,point.y,&xx2,&yy2);
			int id=pDoc->GetLineId();	//得到直線的唯一識別號
			//增加一條直線并重新繪畫此直線
			pDoc->AddLine(m_pColor,m_brColor,m_LineWide,m_LineType,m_Layer,id,
				xx1,yy1,xx2,yy2)
				->Draw(&ht,0,0,m_bColor);
			PushNumb=0;		//鼠標(biāo)按鍵次數(shù)為0，重新進(jìn)行直線的繪制
			//以下是記錄增加直線這一操作，供逆操作時用
			GraphUndo[0].Index=pDoc->GetMaxIndex(1);//得到此直線的序號
			GraphUndo[0].Lb=1;	//直線
			pDoc->AddUndo(2,1,GraphUndo);
			ReleaseCapture();
		}
	}

	else if(m_DrawCurrent==2||m_DrawCurrent==3)//正在繪制連續(xù)直線或者多邊形區(qū)域
	{
		//將點的坐標(biāo)存入Pointxy中
		PointXyz[PushNumb].x=m_xStart+blc*point.x;
		PointXyz[PushNumb].y=m_yStart+blc*(m_hScreen-point.y);
		if(PushNumb==0)      //如果是第一次按下左鼠標(biāo)鍵
		{
			SetCapture();     //捕捉鼠標(biāo)
			mPointOrign=point;//原點等于點中點
			mPointOld=point;  //將前一個點設(shè)為點中點的坐標(biāo)
		}
		else                 //二次以上按下鼠標(biāo)左鍵時
		{
			mPointOrign=mPointOld; //將上一個點設(shè)為原點
			mPointOld=point;       //將點中點設(shè)為原點
		}
		PushNumb++;				//記錄按下點的數(shù)目
	}

	else if(m_DrawCurrent==4||m_DrawCurrent==5)  //如果正在繪制普通圓或者填充圓
	{
		if(PushNumb==0)			//如果是第一次按下左鼠標(biāo)鍵
		{
			mPointOrign=point;	//原點等于點中點
			mPointOld=point;	//上一個點也等于點中點
			PushNumb++;
			SetCapture();		//捕捉鼠標(biāo)
		}
		else					//二次以上按下鼠標(biāo)左鍵時
		{
			PushNumb=0;			//鼠標(biāo)按鍵次數(shù)為0，重新進(jìn)行直線的繪制
			//保存圓或填充圓
			r=(float)sqrt(pow((float)(mPointOrign.x-mPointOld.x),2)+pow((float)(mPointOrign.y-mPointOld.y),2));
			VPtoDP(mPointOrign.x,mPointOrign.y,&xx1,&yy1);
			if(m_DrawCurrent==4)	//如果是繪制一般圓
				m_Fill=0;
			else
				m_Fill=1;
			//保存圓并以覆蓋模式重畫圓
			int id=pDoc->GetCircleId();
			pDoc->AddCircle(m_pColor,m_brColor,m_LineWide,m_LineType,
				m_Layer,id,xx1,yy1,r,m_Fill)
				->Draw(&ht,0,0,m_bColor);
			ReleaseCapture();  //釋放捕捉的鼠標(biāo) 
			//以下是記錄增加圓這一操作，供逆操作時用
			GraphUndo[0].Index=pDoc->GetMaxIndex(3);	//此圓的序號
			GraphUndo[0].Lb=3;	//類別是圓
			pDoc->AddUndo(2,1,GraphUndo);
			ReleaseCapture();
		}
	}

	else if(m_DrawCurrent==6)//正在繪制圓弧
	{
		if(PushNumb==0)			//第一次按下鼠標(biāo)左鍵
		{
			SetCapture();
			DrawArcYes=0;
			mPointOrign1=point;	//記錄圓弧第一點
			PushNumb++;
		}
		else if(PushNumb==1)	//第二次按下鼠標(biāo)左鍵
        {
			mPointOrign=point;	//記錄下圓弧的第二點
			PushNumb++;
		}
		else					//第三次按下鼠標(biāo)鍵
		{
			//計算圓弧的特征參數(shù)
			jsarc(mPointOrign1,mPointOrign,point,&m_CircleX,&m_CircleY,
				&m_CircleR,&m_Angle1,&m_Angle2);
			//增加一個圓弧并重新繪制圓弧
			int id=pDoc->GetArcId();
			pDoc->AddArc(m_pColor,m_brColor,m_LineWide,m_LineType,m_Layer,id,
				m_CircleX,m_CircleY,m_CircleR,0,m_Angle1,m_Angle2)
				->Draw(&ht,0,0,m_bColor);
			PushNumb=0;         ////鼠標(biāo)按鍵次數(shù)為0，重新進(jìn)行圓弧的繪制
			ReleaseCapture();   //釋放捕捉的鼠標(biāo)
			//以下是記錄增加圓弧這一操作，供逆操作時用
			GraphUndo[0].Index=pDoc->GetMaxIndex(4);	//此圓弧的序號
			GraphUndo[0].Lb=4;	//類別是圓弧
			pDoc->AddUndo(2,1,GraphUndo);
			ReleaseCapture();
		}
	}
	else if(m_DrawCurrent==7)	//進(jìn)行標(biāo)注文字的操作
	{
		VPtoDP(point.x,point.y,&m_TextX,&m_TextY);
		if(!pTextDlg)	//如果標(biāo)注文字對話框不存在，產(chǎn)生對話框
		{
			//初始畫形成一個標(biāo)注文字對話框
			pTextDlg=new TextWriteDlg(this,m_TextString,m_FontHeight,m_FontWide,
				m_TextAngle,m_FontAngle,m_FontBetween);
			ASSERT(pTextDlg);
		}
		if(!(pTextDlg->IsOpen()))	//如果對話框沒有打開
		{
			pTextDlg->Create(ID_WRITE_TEXT,this);
		}
		if(!(pTextDlg->IsVisible()))//如果對話框當(dāng)前不可見
		{
			pTextDlg->ShowWindow(SW_SHOW);	//使標(biāo)注文字對話框可見
		}
	}
	else if(m_DrawCurrent==11||m_DrawCurrent==12||m_DrawCurrent==50) //正在進(jìn)行圖形放大或圖形移動
    {
		if(PushNumb==0) //如果第一次按下鼠標(biāo)左鍵
        {
			mPointOrign=point; //原點等于點中點
			mPointOld=point;   //上一個點等于點中點
			PushNumb++;        //按鍵數(shù)增加1
			SetCapture();      //捕捉鼠標(biāo)
		}
		else if(PushNumb==1)//第二次按下左鍵
		{
			if(m_DrawCurrent==11)  //圖形放大
			{
				//得到左下點和右上點
				x1=min(mPointOrign.x,point.x);
				y1=max(mPointOrign.y,point.y);
				x2=max(mPointOrign.x,point.x);
				y2=min(mPointOrign.y,point.y); 
				//改變原點的坐標(biāo)
				VPtoDP(x1,y1,&m_xStart,&m_yStart);
				//改變比例
				float bl1=(float)m_wScreen/(float)(x2-x1); //橫向放大比例
				float bl2=(float)m_hScreen/(float)(y1-y2); //縱向放大比例
				if(bl2<bl1)
					bl1=bl2;		//取較小的變化比例
				if(bl1>0)   
					blc=blc/bl1;	//改變顯示比例
				pDoc->AddScreen(m_xStart,m_yStart,blc);	//保存本屏的參數(shù)
				InitVScroll();
				InitHScroll();
				Invalidate();			//使圖形重畫
			}
			else if(m_DrawCurrent==12)	//圖形移動操作
			{
				//改變原點（左下角點）的實際坐標(biāo)
				m_xStart=m_xStart-blc*(point.x-mPointOrign.x);
				m_yStart=m_yStart+blc*(point.y-mPointOrign.y);
				pDoc->AddScreen(m_xStart,m_yStart,blc);	//保存本屏的參數(shù)
				InitVScroll();
				InitHScroll();
				Invalidate();			//使圖形重畫
			}
			else if(m_DrawCurrent==50)	//如果是插入OLE對象操作
			{
				//得到左下點和右上點
				x1=min(mPointOrign.x,point.x);
				y1=max(mPointOrign.y,point.y);
				x2=max(mPointOrign.x,point.x);
				y2=min(mPointOrign.y,point.y); 
				COleInsertDialog dlg;
				if (dlg.DoModal() != IDOK)
					return;
				BeginWaitCursor();
				CDrawCntrItem* pItem = NULL;
				TRY
				{
					pItem = new CDrawCntrItem(pDoc);
					ASSERT_VALID(pItem);
					if (!dlg.CreateItem(pItem))
						AfxThrowMemoryException();  // any exception will do
					ASSERT_VALID(pItem);

					if (dlg.GetSelectionType()==COleInsertDialog::createNewItem)
						pItem->DoVerb(OLEIVERB_SHOW, this);
					ASSERT_VALID(pItem);