gusucode.com > 电子八段管的仿真控件C#源码程序 > 电子八段管的仿真控件/epanesrc/EPane/NumPane.cpp
#include "stdafx.h"
#include "EPane.h"
#include "NumPane.h"
#include "MemDC.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CNumPane
//#define HEIGHT(ht) min(100,ht)
//#define WEIGHT(wt) min(50,wt)
CNumPane::CNumPane(BOOL bIsShow)
{
bIsShowBackGround = bIsShow;
m_backgroundcolor = RGB(0,0,0); //一般的数字八段管显示盘背景色都是黑色的
m_borderColor = RGB(52,255,34); //随便设置一个颜色
m_numColor = RGB(52,255,34); //随便设置一个颜色
m_numBackColor = RGB(1,135,31);
m_perHeight = 0.6f;
m_perWeight = 0.9f;
m_showNum = "21.234";
m_oldNum = "A";
m_penWidth = 3;
m_htow = 2;
m_maxHeight = 50;
pItem = NULL;
}
CNumPane::~CNumPane()
{
if(pItem != NULL)
delete [] pItem;
}
BEGIN_MESSAGE_MAP(CNumPane, CStatic)
//{{AFX_MSG_MAP(CNumPane)
ON_WM_PAINT()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CNumPane message handlers
void CNumPane::OnPaint()
{
CPaintDC dc(this); // device context for painting
GetClientRect(&m_controlRect); //获得控件客户区矩形大小
MakeAdjust(); //调整参数
CMemDC m_MemDC(&dc,&m_controlRect);
MakeCoordinate(); //每次画的时候都计算一下数字对应的坐标
m_MemDC.BitBlt(0,0,m_controlRect.Width(),m_controlRect.Height(),\
&dc,0,0,SRCCOPY);
//绘制背景颜色边框颜色
CPen m_temppen; //用来画边框的笔，颜色(m_borderColor)
CBrush m_tempbrush; //用来画背景的刷子，颜色(m_backgroundcolor)
m_temppen.CreatePen(PS_SOLID,3,m_borderColor);
m_tempbrush.CreateSolidBrush(m_backgroundcolor);
CPen * pOldPen = m_MemDC.SelectObject(&m_temppen);
CBrush * pOldBrush = m_MemDC.SelectObject(&m_tempbrush);
m_MemDC.Rectangle(&m_controlRect);//绘制控件背景
m_MemDC.SelectObject(pOldPen);
m_MemDC.SelectObject(pOldBrush);
m_temppen.DeleteObject();
m_tempbrush.DeleteObject();
int len = GetNumberLength();
for(int i=0 ; i<len ; i++)
{
pItem[i].pDC = &m_MemDC;
}
if(bIsShowBackGround) //如果画背景数字
{
DrawBackGround(&m_MemDC);
}
DrawNumber(&m_MemDC);//绘制数字
}
void CNumPane::DrawBackGround( CDC * pDC )
{
CPen m_drawNumPen;
m_drawNumPen.CreatePen(PS_SOLID,m_penWidth,m_numBackColor);
CPen * poldPen = (CPen *)pDC->SelectObject(&m_drawNumPen);
int len = GetNumberLength();
for(int i=0 ; i<len ; i++)
{
pItem[i].Draw8(); //画背景数字，也就是绘制8
}
pDC->SelectObject(poldPen);
m_drawNumPen.DeleteObject();
}
int CNumPane::GetNumberLength()
{
return max(4,m_showNum.GetLength()-1); //获得数字的长度(.不计算在内),最小长度也要是4
}
void CNumPane::DrawNumber(CDC *pDC)
{
CPen m_drawNumPen;
m_drawNumPen.CreatePen(PS_SOLID,m_penWidth,m_numColor);
CPen * poldPen = (CPen *)pDC->SelectObject(&m_drawNumPen);
int len = GetNumberLength();
int index = -1;
for(int i=0 ; i<len+1 ; i++)
{
// 绘制len个8段管，分别把他们“点亮”
index ++;
char gchar = m_showNum.GetAt(i);
switch(gchar)
{
case '0':
pItem[index].Draw0();
break;
case '1':
pItem[index].Draw1();
break;
case '2':
pItem[index].Draw2();
break;
case '3':
pItem[index].Draw3();
break;
case '4':
pItem[index].Draw4();
break;
case '5':
pItem[index].Draw5();
break;
case '6':
pItem[index].Draw6();
break;
case '7':
pItem[index].Draw7();
break;
case '8':
pItem[index].Draw8();
break;
case '9':
pItem[index].Draw9();
break;
case '-':
pItem[index].DrawMinus();
break;
case '.':
index--;
pItem[index].DrawDot();
break;
}
}
pDC->SelectObject(poldPen);
m_drawNumPen.DeleteObject();
}
int CNumPane::GetDotPos()
{
int pos = m_showNum.Find('.');
return (pos);
}
void CNumPane::MakeCoordinate()
{
int len = GetNumberLength();//生成的8段管数目
if(m_showNum.Compare(m_oldNum)!=0) //若是长度没有改变
{
// 如何得到每个8段管的坐标
pItem = new Pane8[len];
}
int ctrlheight = m_controlRect.Height();
int middle = ctrlheight/2;
int up = (int)(middle - min(ctrlheight*m_perHeight*0.5,m_maxHeight));
int bottom = (int)(middle + min(ctrlheight*m_perHeight*0.5,m_maxHeight));
int ctrlweight = m_controlRect.Width();
float perval = 0.2f; //每个数字之间间隔和数字宽度之间的比例
int temp = (int)(ctrlweight*m_perWeight/(len));
temp = (int)min(temp,(ctrlheight*m_perHeight)*(1+perval)/m_htow);
int val = int(temp*perval);
int numwidth = int(temp*(1-perval));
int leftbegin = (ctrlweight - temp*len)/2;//最左边的横坐标
//填充数组
for(int i=0 ; i<len ; i++)
{
pItem[i].m_leftup.x = leftbegin;
pItem[i].m_leftup.y = up;
pItem[i].m_leftmid.x = leftbegin;
pItem[i].m_leftmid.y = middle;
pItem[i].m_leftbottom.x = leftbegin;
pItem[i].m_leftbottom.y = bottom;
leftbegin = leftbegin + numwidth;
pItem[i].m_rightup.x = leftbegin;
pItem[i].m_rightup.y = up;
pItem[i].m_rightmid.x = leftbegin;
pItem[i].m_rightmid.y = middle;
pItem[i].m_rightbottom.x= leftbegin;
pItem[i].m_rightbottom.y= bottom;
leftbegin = leftbegin + val;
if(i == GetDotPos()-1)
{
leftbegin += 5; //为画'.'留出多一些的间隔
}
}
}
void CNumPane::SetShowNumber(float f)
{
//首先把float型转化成CString型
CString str;
str.Format("%.5f",f);
if(str.Find('.')==-1)
{
str=str+".00"; //默认精度是小数点后两位
}
if(str.GetLength()<5)
{
for(int i=0;i<(5-str.GetLength());i++)
{
str="0"+str; //如果位数长度太短，则用0补齐
}
}
m_oldNum = m_showNum;
m_showNum = str;
if(m_showNum.Compare(m_oldNum)!=0) //若是长度没有改变
{
if(pItem != NULL)
{
delete [] pItem;
}
}
Invalidate ();
}
void CNumPane::SetShowNumber(CString str)
{
if(str.Find('.')==-1)
{
str=str+".00";
}
if(str.GetLength()<5)
{
for(int i=0;i<(5-str.GetLength());i++)
{
str="0"+str;
}
}
m_oldNum = m_showNum;
m_showNum = str;
if(m_showNum.Compare(m_oldNum)!=0)
{
delete [] pItem;
}
Invalidate ();
}
void CNumPane::SetBackGroundColor(COLORREF ref)
{
m_backgroundcolor = ref;
Invalidate ();
}
void CNumPane::SetBorderColor(COLORREF ref)
{
m_borderColor = ref;
Invalidate ();
}
void CNumPane::SetNumColor(COLORREF ref)
{
m_numColor = ref;
Invalidate();
}
void CNumPane::SetBackNumColor(COLORREF ref)
{
m_numBackColor = ref;
Invalidate();
}
void CNumPane::MakeAdjust()
{
float i = float(m_controlRect.Width()/100);
if( i < 1.5 )
m_penWidth = 1;
else if( 1.5 < i && i < 2.5 )
m_penWidth = 2;
else
m_penWidth = 3;
i = float(m_controlRect.Height());
if(i < 100)
m_perHeight = 0.8f;
else
m_perHeight = 0.5f;
}
void CNumPane::Restore()
{
m_backgroundcolor = RGB(0,0,0);
m_borderColor = RGB(52,255,34);
m_numColor = RGB(52,255,34);
m_numBackColor = RGB(1,135,31);
m_perHeight = 0.6f;
m_perWeight = 0.9f;
bIsShowBackGround = false;
}