///////////////////////////////////////////////////////
// 说明(映射方式MM_LOMETRIC下):
//
// 在矩形框中水平或垂直显示多行文字
//
// 编写:
// 徐景周([email protected])
//
// 参数:
// pDC: 绘制DC
//
// szString: 绘制的字符串
//
// lpRect: 绘制的矩形范围
//
// lMode: 排列方式,0:水平方式; 1:垂直方式
//
// lHori: 水平对齐方式, 0:左对齐; 1:居中; 2:右对齐; 3:自定义
//
// lVert: 垂直对齐方式, 0:顶对齐; 1:居中; 2:底对齐; 3:自定义
///////////////////////////////////////////////////////
CRect DrawTitleInRect(CDC *pDC, CString szString, LPRECT lpRect, long lMode, long lHori, long lVert)
{
CRect rcInner(lpRect);
if(rcInner.Width() ==0)
return rcInner;
TEXTMETRIC tm;
pDC->GetTextMetrics(&tm);
int tmpWidth=tm.tmAveCharWidth, tmpHeight=tm.tmHeight;
//---------------------------------------------------------------------------------------------
//功能:根据新、老矩形,重新计算行数,使文字多行显示,jingzhou xu
//---------------------------------------------------------------------------------------------
//一行中最大字符数
int nMaxLineChar = abs(lpRect->right - lpRect->left) / tmpWidth;
if(nMaxLineChar < 2) //应该至少能显示一个汉字
return rcInner;
//记录当前行的宽度
short theLineLength=0;
//记录当前行中汉字字节数,以防止将一半汉字分为两行
unsigned short halfChinese=0;
for(int i=0; i<=szString.GetLength()-1; i++)
{
if(((unsigned char)szString.GetAt(i) == 0x0d) && ((unsigned char)szString.GetAt(i+1) == 0x0a))
theLineLength=0;
// 在此加入"||"字符为换行标志字符,输入时可根据此字符串来自动换行
if(((unsigned char)szString.GetAt(i) == '|') && ((unsigned char)szString.GetAt(i+1) == '|'))
{
szString.SetAt(i,(unsigned char)0x0d);
szString.SetAt(i+1,(unsigned char)0x0a);
}
//大于0xa1的字节为汉字字节
if((unsigned char)szString.GetAt(i) >= 0xA1)
halfChinese++;
theLineLength++;
//如果行宽大于每行最大宽度,进行特殊处理
if(theLineLength > nMaxLineChar)
{
//防止将一个汉字分为两行,回溯
if(!(halfChinese%2) && (unsigned char)szString.GetAt(i) >= 0xA1)
{
szString.Insert(i-1,(unsigned char)0x0a);
szString.Insert(i-1,(unsigned char)0x0d);
//注:此处不加一跳过,是由于它是在i-1处添加,只需跳到<i+1>处,故只需在循环处加一次既可。
}
else
{
szString.Insert(i,(unsigned char)0x0a);
szString.Insert(i,(unsigned char)0x0d);
i++; //跳过新增的换行符,应跳到<i+2>处(循环中加一次,故这里只加一次)
}
theLineLength = 0;
halfChinese=0;
}
}
if(lMode==0) //水平排列
{
rcInner.left+=tmpWidth;
rcInner.right-=tmpWidth;
rcInner.top-=tmpWidth;
rcInner.bottom+=tmpWidth;
}
if(lMode==1) //垂直排列
{
rcInner.left+=tmpWidth;
rcInner.right=rcInner.left+tmpWidth;
rcInner.top-=tmpWidth;
rcInner.bottom+=tmpWidth;
}
//重新计算矩形边界范围
pDC->DrawText(szString, rcInner,DT_WORDBREAK|DT_LEFT|DT_CALCRECT);
switch(lHori)
{
case 0:
break;
case 1:
{
long xOutCent=(lpRect->right+lpRect->left)/2;
long xInnCent=(rcInner.right+rcInner.left)/2;
rcInner.left+=(xOutCent-xInnCent);
rcInner.right+=(xOutCent-xInnCent);
}
break;
case 2:
{
long lInWidth=rcInner.right-rcInner.left;
rcInner.right=lpRect->right-tmpWidth;
rcInner.left=rcInner.right-lInWidth;
}
break;
default:
break;
}
switch(lVert)
{
case 0:
break;
case 1:
{
long yOutCent=(lpRect->bottom+lpRect->top)/2;
long yInnCent=(rcInner.bottom+rcInner.top)/2;
rcInner.top-=(yInnCent-yOutCent);
rcInner.bottom-=(yInnCent-yOutCent);
}
break;
case 2:
{
long lInHeigh=rcInner.top-rcInner.bottom;
rcInner.bottom=lpRect->bottom+tmpWidth;
rcInner.top=rcInner.bottom+lInHeigh;
}
break;
default:
break;
}
if(rcInner.bottom < lpRect->bottom)
rcInner.bottom = lpRect->bottom;
if(rcInner.top > lpRect->top)
rcInner.top = lpRect->top;
//---------------------------------------------------------------------------------------------
if(lHori==0)
pDC->DrawText(szString, rcInner, DT_WORDBREAK|DT_LEFT);
else if(lHori==1)
pDC->DrawText(szString, rcInner, DT_WORDBREAK|DT_CENTER);
else if(lHori==2)
pDC->DrawText(szString, rcInner, DT_WORDBREAK|DT_RIGHT);
return rcInner;
}
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