selectctrl.cpp

RFID读标示例

// SelectCtrl.cpp: implementation of the CSelectCtrl class.
//
//////////////////////////////////////////////////////////////////////

#include "SelectCtrl.h"
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

CSelectCtrl::CSelectCtrl()
{
	m_bCreated = FALSE;
	m_bInited = TRUE;	
//	m_bIsFrame = FALSE;
	m_bFrameStyle = 0;
	m_bIsMiddle = FALSE;
	m_nTotalItem = 0;
	m_nCurrent = 0;
	m_nWordFrame = 0;

	m_Setrect.left = __LEFT_DISTANCE__;
	m_Setrect.right = __RIGHT_DISTANCE__;
	m_Setrect.top = __TOP_DISTANCE__;
	m_Setrect.bottom = __SPACE_DISTANCE__;
	m_nWordSqu = __WORD_SQU_DISTANCE__;
}

CSelectCtrl::~CSelectCtrl()
{
	for(int i=0;i<m_nTotalItem;i++)
	{
		delete []m_pstrItemText[i];
	}
}

int CSelectCtrl::WinProc(UMSG *pMsg)
{
	if(m_bInited == FALSE) return -1;
	
	switch(pMsg->nMessage){
	case UM_PAINT:
		OnPaint();
		break;
	case UM_KEYPRESS:
		OnKey(pMsg);
		break;
	}
	return 0;
}

int CSelectCtrl::Create(CUWin * pWndParent,
								const char *szName,
								int nStyle,
								RECT *pRect,
								int nParam )
{
	nParam = nParam;
	pRect = pRect;
	szName = szName;	
	
	if(m_bInited == FALSE) return -1;
	if(m_bCreated == TRUE) return 0;	//already created
	
	SetParent(pWndParent);
	SetContainer(pWndParent);
	
	if(nStyle & __SELECT_REALFRAME__)
	{
		m_bFrameStyle = 1;
	}
	if(nStyle & __SELECT_DASHFRAME__)
	{
		m_bFrameStyle = 2;
	}
	if(nStyle & __SELECT_MIDDLE__)
	{
		m_bIsMiddle = TRUE;
	}
	if(nStyle & __SELECT_WORD_LINEFRAME__)
	{
		m_nWordFrame = 1;
	}
	if(nStyle & __SELECT_WORD_DASHFRAME__)
	{
		m_nWordFrame = 2;
	}
	if(nStyle & __SELECT_WORD_BLACKFRAME__)
	{
		m_nWordFrame = 3;
	}
	int npWndStyle = SendMessage(pWndParent, UM_QUERY_STYLE);
	npWndStyle &= 0x0000FFFF; 

	memcpy(&m_rect, pRect, sizeof(RECT));

	GetDC()->SetViewPort(&m_rect);	//set dc viewport
	
	if(pWndParent != NULL)
		PostMessage(pWndParent, UM_NOTIFY, (int)this, NOTIFY_CREATE);
	m_bCreated = TRUE;

	return 0;
}

void CSelectCtrl::Show()
{
	SendMessage(this,UM_PAINT);
}


void CSelectCtrl::OnPaint(void)
{
	CUDC * pDC = GetDC();
	pDC->BeginBatchPaint();
	pDC->ClearDC();

	if(m_bFrameStyle == 2)
	{
		//虚线画边框
		pDC->DashedLine(0,0,0,m_rect.bottom-m_rect.top);
		pDC->DashedLine(0,0,m_rect.right-m_rect.left,0);
		pDC->DashedLine(0,m_rect.bottom-m_rect.top,m_rect.right-m_rect.left,m_rect.bottom-m_rect.top);
		pDC->DashedLine(m_rect.right-m_rect.left,0,m_rect.right-m_rect.left,m_rect.bottom-m_rect.top);		
	}
	else if(m_bFrameStyle == 1)
	{
		//实线画边框
		pDC->Line(0,0,0,m_rect.bottom-m_rect.top);
		pDC->Line(0,0,m_rect.right-m_rect.left,0);
		pDC->Line(0,m_rect.bottom-m_rect.top,m_rect.right-m_rect.left,m_rect.bottom-m_rect.top);
		pDC->Line(m_rect.right-m_rect.left,0,m_rect.right-m_rect.left,m_rect.bottom-m_rect.top);		
	}
	

	GetDistanceHeight(pDC);


	//如果有添加项就画出
	if(m_nTotalItem > 0)
	{
		int i;
		int nCount;
		for(nCount = 0;nCount<m_nTotalItem;nCount++)
		{
			for(i=0;i<2;i++)
			{
				//上横线
				pDC->Line(m_Setrect.left,(nCount+1)*m_Setrect.top + nCount*select_item_height + i ,
					m_Setrect.left + select_item_height,(nCount+1)*m_Setrect.top + nCount*select_item_height + i);
				//下横线
				pDC->Line(m_Setrect.left,(nCount+1)*m_Setrect.top + nCount*select_item_height  + select_item_height - i,
					m_Setrect.left +select_item_height,(nCount+1)*m_Setrect.top + nCount*select_item_height  + select_item_height- i);
				//左竖线
				pDC->Line(m_Setrect.left + i,(nCount+1)*m_Setrect.top + nCount*select_item_height ,
					m_Setrect.left + i,(nCount+1)*m_Setrect.top + nCount*select_item_height + select_item_height);
				//右竖线
				pDC->Line(m_Setrect.left +select_item_height-i,(nCount+1)*m_Setrect.top + nCount*select_item_height,
					m_Setrect.left - i + select_item_height,(nCount+1)*m_Setrect.top + nCount*select_item_height + select_item_height);
			}
			//设定文字风格
			if(m_nWordFrame == 3 && m_nCurrent == nCount+1)
			{
				pDC->SetTextBgColor(255);
				pDC->SetTextColor(0);
			}
			else
			{
				pDC->SetTextBgColor(0);
				pDC->SetTextColor(255);
			}
			pDC->TextOut(m_Setrect.left + select_item_height + m_nWordSqu,
					(nCount+1)*m_Setrect.top + nCount*select_item_height + 1 ,m_pstrItemText[nCount]);

			//画叉//画文字边框
			if(m_nCurrent == nCount+1)
			{
				
				pDC->Line(m_Setrect.left,(nCount+1)*m_Setrect.top + nCount*select_item_height ,
					m_Setrect.left +select_item_height,(nCount+1)*m_Setrect.top + nCount*select_item_height  + select_item_height);
				pDC->Line(m_Setrect.left + select_item_height,(nCount+1)*m_Setrect.top + nCount*select_item_height,
					m_Setrect.left,(nCount+1)*m_Setrect.top + nCount*select_item_height  + select_item_height );
			
				//画文字边框
			
				if(m_nWordFrame == 2)
				{
					pDC->SetLineStyle(DASHED_LINE);
					/*
					pDC->RectAngle(m_Setrect.left + select_item_height + m_nWordSqu - 1,(nCount+1)*m_Setrect.top + nCount*select_item_height,
											m_Setrect.right + 1,(nCount+1)*m_Setrect.top + nCount*select_item_height  + select_item_height);
										*/
					pDC->RectAngle(0 + 2,(nCount+1)*m_Setrect.top + nCount*select_item_height - 2,
									m_rect.right - m_rect.left - 2,(nCount+1)*m_Setrect.top + nCount*select_item_height  + select_item_height + 2);
					pDC->SetLineStyle(SOLID_LINE);
				}
				else if(m_nWordFrame == 1)
				{
					pDC->Line(m_Setrect.left + select_item_height + m_nWordSqu - 1,(nCount+1)*m_Setrect.top + nCount*select_item_height  + select_item_height +1,
					m_Setrect.right + 1,(nCount+1)*m_Setrect.top + nCount*select_item_height  + select_item_height+1);
				}

				
			}
		}		
	}
	pDC->EndBatchPaint();
}

void CSelectCtrl::OnKey(UMSG * pMsg)
{
	if(pMsg->nMessage == UM_KEYPRESS)
	{
		if(pMsg->nData == KEY_UP)
		{
			if(m_nCurrent == 1)
			{
				m_nCurrent = m_nTotalItem;
			}
			else
			{
				m_nCurrent -= 1;
			}
		}
		if(pMsg->nData == KEY_DOWN)
		{
			if(m_nCurrent == m_nTotalItem)
			{
				m_nCurrent = 1;
			}
			else
			{
				m_nCurrent += 1;
			}
		}
		SendMessage(this,UM_PAINT);
	}
	SendMessage(GetParent(), UM_KEYPRESS, 0, pMsg->nData);
}

BOOL CSelectCtrl::AddString(const char* pstrItemText)
{
	if(pstrItemText == NULL)
	{
		return FALSE;
	}
	
	if(m_nTotalItem >= select_max_item_count)
	{
		return FALSE;
	}

	//将字符串复制到选择项中 
	m_pstrItemText[m_nTotalItem] = new char[strlen(pstrItemText)+1];
	memset(m_pstrItemText[m_nTotalItem],0,strlen(pstrItemText)+1);
	memcpy(m_pstrItemText[m_nTotalItem],pstrItemText,strlen(pstrItemText));
	m_nTotalItem += 1;
	if(m_nTotalItem > 0)
	{
		m_nCurrent = 1;
	}
	return TRUE;
}

void CSelectCtrl::GetDistanceHeight(CUDC *pdc)
{
	

	//得到横向位置
	int nMaxWordMaxLen = 0;
	for(int i=0;i<m_nTotalItem;i++)
	{
		if(pdc->GetTextWidth(m_pstrItemText[i]) > nMaxWordMaxLen)
		{
			nMaxWordMaxLen = pdc->GetTextWidth(m_pstrItemText[i]);
		}
		m_Setrect.right = m_Setrect.left + select_item_height 
						+ m_nWordSqu + nMaxWordMaxLen;
	}
	//如果超过横向长度范围
	if(nMaxWordMaxLen + m_nWordSqu + select_item_height > m_rect.right - m_rect.left)
	{
		m_Setrect.left = 0;
		m_Setrect.right = m_rect.right - m_rect.left;
		return;
	}

	if(m_bIsMiddle)
	{
		int nHeight = (m_rect.bottom-m_rect.top-m_nTotalItem*select_item_height)/(m_nTotalItem+1);
		m_Setrect.top = nHeight;
		m_Setrect.bottom = nHeight;	
		m_Setrect.left = (m_rect.right - m_rect.left - (nMaxWordMaxLen  + select_item_height))/3;
		m_nWordSqu = m_Setrect.left;
		m_Setrect.right = m_rect.right - m_rect.left - m_Setrect.left;	
	}
}

int CSelectCtrl::GetCurSel()
{
	return m_nCurrent;
}

void CSelectCtrl::SetCurSel(int n)
{
	if(n< 0 || n > m_nTotalItem)
	{
		return;
	}
	m_nCurrent = n;
	SendMessage(this,UM_PAINT);
}

void CSelectCtrl::SetParam(int nTop /*距离上边框的距离*/,
						int nLeft  /*距离左边框的距离*/,
						int nWordSqu)
{
	m_Setrect.top = nTop;
	m_Setrect.left = nLeft;

	m_nWordSqu = nWordSqu;
//	m_Setrect.right = m_rect.right - m_rect.left - m_Setrect.left;
}

char* CSelectCtrl::GetCurSelTextPtr()
{
	return m_pstrItemText[m_nCurrent-1];
}

char* CSelectCtrl::GetTextPtr(int n)
{
	if(n> m_nTotalItem || n < 0)
	{
		return NULL;
	}
	return m_pstrItemText[n-1];
}