drawsample.cpp

组态王图库开发包

	{ 
	DRAWPOLYSHAPE drawpolyshape;
	drawpolyshape.x1 = 0 ;
	drawpolyshape.x2 = 0 ;
	drawpolyshape.y1 = 0 ;
	drawpolyshape.y2 = 0 ;
	drawpolyshape.brushColor = 0 ;
	drawpolyshape.brushStyle = 0 ;
	drawpolyshape.brushHatch = 0 ;
	drawpolyshape.fillStyle = 0 ;
	drawpolyshape.fromColor = 0 ;
	drawpolyshape.toColor = 0 ;
	drawpolyshape.penColor = 0 ;
	drawpolyshape.penStyle = 0 ;
	drawpolyshape.penWidth = 1 ;
	drawpolyshape.nSize = 7 ;
	POINT array[ 7 ] ;
	array[ 0 ].x = int( 32 * fact ) ;
	array[ 0 ].y = int( 38 * fact ) ;
	array[ 1 ].x = int( 32 * fact ) + int( int( 3 * fact ) * sin( PI / 12 ) ) ;
	array[ 1 ].y = int( 38 * fact ) - int( int( 3 * fact ) * cos( PI / 12 ) ) ;
	array[ 2 ].x = int( 32 * fact ) - int( int( 3 * fact ) * sin( PI / 4 ) ) ;
	array[ 2 ].y = int( 38 * fact ) - int( int( 3 * fact ) * cos( PI / 4 ) ) ;
	array[ 3 ].x = int( 32 * fact ) ;
	array[ 3 ].y = int( 38 * fact ) ;
	array[ 4 ].x = int( 32 * fact ) - int( int( 3 * fact ) * sin( PI / 12 ) ) ;
	array[ 4 ].y = int( 38 * fact ) + int( int( 3 * fact ) * cos( PI / 12 ) ) ;
	array[ 5 ].x = int( 32 * fact ) + int( int( 3 * fact ) * sin( PI / 4 ) ) ;
	array[ 5 ].y = int( 38 * fact ) + int( int( 3 * fact ) * cos( PI / 4 ) ) ;
	array[ 6 ].x = int( 32 * fact ) ;
	array[ 6 ].y = int( 38 * fact ) ;
	drawpolyshape.pArray = array ;
	KVDrawPolyshape( &drawpolyshape ) ;
	}

	/* 绘制底座上的钜形(右) */
	for ( int j = 0 ; j < 6 ; j ++ )
	{
		/* 绘制矩形框 */
		{
		DRAWRECT graphic;
		graphic.x1 = int( 61 * fact ) - int( 3 * fact ) * ( j + 1 ) - int( fact ) * j ;
		graphic.x2 = int( 61 * fact ) - int( 3 * fact ) * j - int( fact ) * j ;
		graphic.y1 = int( 35 * fact ) ;
		graphic.y2 = int( 41 * fact ) ;
		graphic.brushColor = 8421504;
		graphic.brushStyle = 0;
		graphic.brushHatch = 0;
		graphic.fillStyle = 0;
		graphic.fromColor = 16777215;
		graphic.toColor = 0;
		graphic.penColor = 0;
		graphic.penStyle = 0;
		graphic.penWidth = 1;
		KVDrawRoundRect( &graphic );
		}
		/* 绘制直线 */
		{
		DRAWRECT graphic;
		graphic.x1 = int( 61 * fact ) - int( 3 * fact ) * ( j + 1 ) - int( fact ) * j ;
		graphic.x2 = int( 61 * fact ) - int( 3 * fact ) * ( j + 1 ) - int( fact ) * j ;
		graphic.y1 = int( 35 * fact ) ;
		graphic.y2 = int( 41 * fact ) ;
		graphic.brushColor = 16777215;
		graphic.brushStyle = 0;
		graphic.brushHatch = 0;
		graphic.penColor = 16777215;
		graphic.penStyle = 0;
		graphic.penWidth = 1;
		KVDrawLine( &graphic );
		}
		/* 绘制直线 */
		{
		DRAWRECT graphic;
		graphic.x1 = int( 61 * fact ) - int( 3 * fact ) * ( j + 1 ) - int( fact ) * j ;
		graphic.x2 = int( 61 * fact ) - int( 3 * fact ) * j - int( fact ) * j;
		graphic.y1 = int( 35 * fact ) ;
		graphic.y2 = int( 35 * fact ) ;
		graphic.brushColor = 16777215;
		graphic.brushStyle = 0;
		graphic.brushHatch = 0;
		graphic.penColor = 16777215;
		graphic.penStyle = 0;
		graphic.penWidth = 1;
		KVDrawLine( &graphic );
		}
	}
	
	return TRUE ;
}

/*
** 功    能：画表盘刻度
** 返 回 值：无
** 输入参数：
**  	rcMeterScale  ： 圆外切矩形                                   \ | /
**  	nStartAngle   :  刻度线的起始角                              ->\|/<-
**  	nEndAngle     ： 刻度线的结束角                 nStartAngle (   |   ) nEndAngle 
**  	pScale        :  刻度线结构指针,不能为 NULL                     |
**  	pLabel        ： 标签结构指针,为 NULL 不画标签               
**  	bMarkInside   :  刻度在内（ TRUE ），刻度在外（ FALSE ） 
*/
void DrawMeterScale( CRect & rcMeterScale,
					int nStartAngle, int nEndAngle,
					METERSCALE * pScale,
					METERSCALELABEL * pLabel,
					BOOL bMarkInside )
{
	ASSERT( pScale != NULL ) ;

	int nSign = bMarkInside ? -1 : 1 ;
	
	// 计算圆心位置,圆的半径
	long lRadius ; 
	if ( rcMeterScale.Width() < rcMeterScale.Height() )
		lRadius = rcMeterScale.Width() / 2 ;
	else
		lRadius = rcMeterScale.Height() / 2 ;
	CPoint ptCenter = rcMeterScale.CenterPoint() ;
	lRadius += nSign * 2 ;

	// 计算主刻度总角度，每一主刻度角度，每一副刻度角度
	double dblScaleAngle = ( 360 - nStartAngle - nEndAngle ) * PI / 180 ;
	double dblEveryPrimeScaleAngle = dblScaleAngle / ( pScale->nPrimeScale - 1 ) ;
	double dblEverySlaveScaleAngle = dblEveryPrimeScaleAngle / ( pScale->nSlaveScale + 1 ) ;

	// 画主，副刻度，主刻度标签
	CPoint ptScaleFrom , ptScaleTo ;
	for ( int i = 0 ; i < pScale->nPrimeScale ; i ++ )
	{
		// 画主刻度线
		double dblPrimeScaleAngle = ( 270 - nStartAngle )  * PI / 180 - dblEveryPrimeScaleAngle * i ;
		if ( fabs( dblPrimeScaleAngle ) >= 2 * PI )
			dblPrimeScaleAngle = fmod( dblPrimeScaleAngle , 2 * PI ) ;
		ptScaleFrom.x = ptCenter.x + long( lRadius * cos( dblPrimeScaleAngle ) ) ;
		ptScaleFrom.y = ptCenter.y - long( lRadius * sin( dblPrimeScaleAngle ) ) ;
		ptScaleTo.x = ptCenter.x + long( ( lRadius + nSign * pScale->nPrimeScaleLen ) * cos( dblPrimeScaleAngle ) ) ;
		ptScaleTo.y = ptCenter.y - long( ( lRadius + nSign * pScale->nPrimeScaleLen ) * sin( dblPrimeScaleAngle ) ) ;
		{
		DRAWRECT drawrect ;
		drawrect.x1 = ptScaleFrom.x ;
		drawrect.y1 = ptScaleFrom.y ;
		drawrect.x2 = ptScaleTo.x ;
		drawrect.y2 = ptScaleTo.y ;
		drawrect.brushColor = 16777215 ;
		drawrect.brushStyle = 0 ;
		drawrect.brushHatch = 0 ;
		drawrect.penColor = pScale->clrPrimeScale ;
		drawrect.penStyle = 0 ;
		drawrect.penWidth = pScale->nPrimeScaleWidth ;
		KVDrawLine( &drawrect ) ;
		}

		// 画主刻度标签
		if ( pLabel != NULL && ( i % pLabel->nMainDiff == 0 || i == pScale->nPrimeScale - 1 ) )
		{
			LABELMETRIC labelmetric ;
			labelmetric.textPenFontIndex = pLabel->nPenFontIndex ;
			labelmetric.textPenFontHeight = pLabel->nPenFontHeight ;
			labelmetric.textPenFontWidth = pLabel->nPenFontWidth ;
			labelmetric.textPenFontStyle = pLabel->nPenFontStyle ;
			CString strScale ;
			double dblCurrScale = pLabel->fltMinScale + i * ( pLabel->fltMaxScale - pLabel->fltMinScale ) / ( pScale->nPrimeScale - 1 ) ;
			if ( i == pScale->nPrimeScale - 1 )
				dblCurrScale = pLabel->fltMaxScale ;
			int nDecimalLen = pLabel->nLabelDecimalLen ;
			strScale = GetScaleLabelText( dblCurrScale, nDecimalLen ) ;
			TCHAR * pLabelText = new TCHAR[ strScale.GetLength() + 1 ] ;
			_tcscpy( pLabelText , strScale ) ;
			labelmetric.pLabel = pLabelText ;
			CSize sizeLabel = KVGetLabelMetric( &labelmetric ) ;

			CPoint ptLabelCenter ;
			ptLabelCenter.x = ptCenter.x + long( ( lRadius + nSign * ( sizeLabel.cy * sqrt( 2 ) / 2 + pScale->nPrimeScaleLen + pLabel->nLabelOffset ) ) * cos( dblPrimeScaleAngle ) ) ;
			ptLabelCenter.y = ptCenter.y - long( ( lRadius + nSign * ( sizeLabel.cy * sqrt( 2 ) / 2 + pScale->nPrimeScaleLen + pLabel->nLabelOffset ) ) * sin( dblPrimeScaleAngle ) ) ;
		
			CPoint ptLabelTopLeft( 0, 0 ) ;
			if ( fabs( dblPrimeScaleAngle ) < VERY_LITTLE )
			{
				ptLabelTopLeft.x = ptLabelCenter.x - sizeLabel.cy / 2 ;
				ptLabelTopLeft.y = ptLabelCenter.y - sizeLabel.cy / 2 ;
			}
			else if ( fabs( dblPrimeScaleAngle - PI / 2 ) < VERY_LITTLE )
			{
				ptLabelTopLeft.x = ptLabelCenter.x - sizeLabel.cx / 2 ;
				ptLabelTopLeft.y = ptLabelCenter.y - sizeLabel.cy / 2 ;
			}
			else if ( fabs( dblPrimeScaleAngle - PI ) < VERY_LITTLE )
			{
				ptLabelTopLeft.x = nSign == 1 ? ptLabelCenter.x + sizeLabel.cy / 2 - sizeLabel.cx : ptLabelCenter.x - sizeLabel.cy / 2 ;
				ptLabelTopLeft.y = ptLabelCenter.y - sizeLabel.cy / 2 ;
			}
			else if ( fabs( dblPrimeScaleAngle - 3 * PI / 2 ) < VERY_LITTLE 
				|| fabs( dblPrimeScaleAngle - ( - PI / 2 ) ) < VERY_LITTLE )
			{
				ptLabelTopLeft.x = ptLabelCenter.x - sizeLabel.cy / 2 ;
				ptLabelTopLeft.y = ptLabelCenter.y - sizeLabel.cy / 2 ;
			}
			else if ( dblPrimeScaleAngle > 0 && dblPrimeScaleAngle < PI / 2 )
			{
				ptLabelTopLeft.x = nSign == 1 ? ptLabelCenter.x - sizeLabel.cy / 2 : ptLabelCenter.x + sizeLabel.cy / 2 - sizeLabel.cx ;
				ptLabelTopLeft.y = ptLabelCenter.y - sizeLabel.cy / 2 ;
			}			
			else if ( dblPrimeScaleAngle > PI / 2 && dblPrimeScaleAngle < PI )
			{
				ptLabelTopLeft.x = nSign == 1 ? ptLabelCenter.x - sizeLabel.cx + sizeLabel.cy / 2 : ptLabelCenter.x - sizeLabel.cy / 2 ;
				ptLabelTopLeft.y = ptLabelCenter.y - sizeLabel.cy / 2 ;
			}			
			else if ( dblPrimeScaleAngle > PI && dblPrimeScaleAngle < 3 * PI / 2 )
			{
				ptLabelTopLeft.x = nSign == 1 ? ptLabelCenter.x - sizeLabel.cx + sizeLabel.cy / 2 : ptLabelCenter.x - sizeLabel.cy / 2 ;
				ptLabelTopLeft.y = ptLabelCenter.y - sizeLabel.cy / 2 ;
			}
			else if ( dblPrimeScaleAngle < 0 && dblPrimeScaleAngle > - PI / 2 )
			{
				ptLabelTopLeft.x = nSign == 1 ? ptLabelCenter.x - sizeLabel.cy / 2 : ptLabelCenter.x + sizeLabel.cy / 2 - sizeLabel.cx ;
				ptLabelTopLeft.y = ptLabelCenter.y - sizeLabel.cy / 2  ;
			}
			{ 
			DRAWLABEL drawlabel ;
			drawlabel.x1 = ptLabelTopLeft.x ;
			drawlabel.y1 = ptLabelTopLeft.y ;
			drawlabel.x2 = ptLabelTopLeft.x + sizeLabel.cx ;
			drawlabel.y2 = ptLabelTopLeft.y + sizeLabel.cy ;
			drawlabel.brushColor = 16777215 ;
			drawlabel.brushStyle = 0 ;
			drawlabel.brushHatch = 0 ;
			drawlabel.penColor = 0 ;
			drawlabel.penStyle = 0 ;
			drawlabel.penWidth = 0 ;
			drawlabel.textPenFontStyle = pLabel->nPenFontStyle ;
			drawlabel.textPenFontHeight = pLabel->nPenFontHeight ;
			drawlabel.textPenFontWidth = pLabel->nPenFontWidth ;
			drawlabel.textPenFontIndex = pLabel->nPenFontIndex ;
			drawlabel.textPenColor = pLabel->clrLabelColor ;
			drawlabel.pText = pLabelText ;
			KVDrawLabel( &drawlabel );
			delete pLabelText ;
			}
						
		} // if pLabel 

		// 画副刻度线
		if ( i == pScale->nPrimeScale - 1 )
			break ;
		for ( int j = 1 ; j <= pScale->nSlaveScale ; j ++ )
		{
			double dblSlaveScaleAngle = dblPrimeScaleAngle - dblEverySlaveScaleAngle * j ;
			ptScaleFrom.x = ptCenter.x + long( lRadius * cos( dblSlaveScaleAngle ) ) ;
			ptScaleFrom.y = ptCenter.y - long( lRadius * sin( dblSlaveScaleAngle ) ) ;
			ptScaleTo.x = ptCenter.x + long( ( lRadius + nSign * pScale->nSlaveScaleLen ) * cos( dblSlaveScaleAngle ) ) ;
			ptScaleTo.y = ptCenter.y - long( ( lRadius + nSign * pScale->nSlaveScaleLen ) * sin( dblSlaveScaleAngle ) ) ;
			{
			DRAWRECT drawrect ;
			drawrect.x1 = ptScaleFrom.x ;
			drawrect.y1 = ptScaleFrom.y ;
			drawrect.x2 = ptScaleTo.x ;
			drawrect.y2 = ptScaleTo.y ;
			drawrect.brushColor = 16777215 ;
			drawrect.brushStyle = 0 ;
			drawrect.brushHatch = 0 ;
			drawrect.penColor = pScale->clrSlaveScale ;
			drawrect.penStyle = 0 ;
			drawrect.penWidth = pScale->nSlaveScaleWidth ;
			KVDrawLine( &drawrect ) ;
			}
		} // for j
	} // for i
}

/*
** 功    能：绘制表盘标签,限制在边界之内
** 参    数：
**          graphic  标签结构
*/
void DrawMeterLabel( DRAWLABEL & graphic )
{
	// 调整矩形
	if ( graphic.x2 < graphic.x1 )
	{
		int nTemp = graphic.x1 ;
		graphic.x1 = graphic.x2 ;
		graphic.x2 = nTemp ;
	}
	if ( graphic.y2 < graphic.y1 )
	{
		int nTemp = graphic.y1 ;
		graphic.y1 = graphic.y2 ;
		graphic.y2 = nTemp ;
	}

	// 剪裁字符串以适应标签结构中的矩形
	CString strLabel = MakeShortString( graphic, 0 );

	// 绘制标签
	TCHAR szLabel[ MAX_PATH ] ;
	_tcscpy( szLabel, strLabel ) ;
	LABELMETRIC labelmetric ;
	labelmetric.textPenFontIndex = graphic.textPenFontIndex ;
	labelmetric.textPenFontHeight = graphic.textPenFontHeight ;
	labelmetric.textPenFontWidth = 0 ;