#include "view.h"
#include <QPainter>

MyView::MyView(QWidget *parent) : QWidget(parent)
{

}


void MyView::paintEvent(QPaintEvent *event)
{

   /* QPainter paint;
    paint.begin(this);
    paint.setBrush(Qt::white);
    paint.drawRect(plotrec);
	QString str=m_CurveName+"曲线数值分布图";
	QRect rec=QRect(plotrec.left(),plotrec.top(),plotrec.width(),30);
	paint.drawText(rec, Qt::AlignHCenter| Qt::AlignVCenter,str);
    paint.end();*/
	QPainter paint;
    paint.begin(this);
   // paint.setBrush(Qt::lightGray);
	//paint.drawRect(plotrec);
	QRect plotrec=widgetRec;
	QRect rec1=widgetRec;
	QString str=m_CurveName+"曲线数值分布图";
	QRect rec=QRect(plotrec.left(),plotrec.top(),plotrec.width(),30);
	paint.drawText(rec, Qt::AlignHCenter| Qt::AlignVCenter,str);
    
	QRect rthy=plotrec;
	rthy.adjust(70,40,-60,-60);
	int x0=rthy.left(),y0=rthy.bottom(),h=rthy.height(),w=rthy.width();
	int ptotal=point[0],pmax=point[0];
	for(int i=1;i<10*m_SmallGrid;i++)	
	{
		ptotal+=point[i];
		if(pmax<point[i])pmax=point[i];
	}
	float hmax=100.*(float)pmax/(float)ShowPoint;
	plotrec.setTop(rthy.bottom()+16);
	for(int i=0;i<=10;i++)
	{
		//横线
		paint.drawLine(x0,y0-i*h/10,x0+w,y0-i*h/10);
		str=QString::number(i*m_Ymax/10.,'f',1);
		if((m_Ymax/10.)==int(m_Ymax/10))str=QString::number(i*m_Ymax/10.);//测试5，20
		paint.drawText(x0-25,y0-i*h/10+10,str);
		//纵线
		paint.drawLine(x0+i*w/10,y0-h,x0+i*w/10,y0);
		if(i%2==0)
		{
			plotrec.setLeft(x0+(i-1)*w/10);
			plotrec.setRight(x0+(i+1)*w/10);
			str=QString::number(m_Xmin+i*(m_Xmax-m_Xmin)/10.);
			paint.drawText(plotrec, Qt::AlignHCenter| Qt::AlignTop,str);
		}
	}
	//写x、y轴坐标名
	rec1.adjust(0,40,rec1.left()+40-rec1.right(),0);
	//rec1.top+=40;
	//rec1.right=rec1.left+40;
	paint.drawText(rec1,Qt::AlignHCenter| Qt::AlignTop,"pp");//"频");
	rec1.adjust(0,20,0,0);//rec1.top+=20;
	paint.drawText(rec1,Qt::AlignHCenter| Qt::AlignTop,"LL");//"率");//dc.DrawText("",rec1,DT_SINGLELINE|DT_TOP|DT_CENTER);
	rec1.adjust(0,20,0,0);//rec1.top+=20;
	paint.drawText(rec1,Qt::AlignHCenter| Qt::AlignTop,"(%)");//dc.DrawText("",rec1,DT_SINGLELINE|DT_TOP|DT_CENTER);
	plotrec.setLeft(x0);plotrec.setBottom(plotrec.bottom()-10);
	paint.drawText(plotrec,Qt::AlignHCenter| Qt::AlignBottom,m_CurveName+m_CurveUnit);//dc.DrawText(,plotrec,DT_SINGLELINE|DT_BOTTOM|DT_CENTER);
	//CBrush *oldBrush=dc.SelectObject(&GreenBrush);
	
	
	for(int i=0;i<10*m_SmallGrid;i++)
	{
		plotrec.setLeft(x0+i*w/(10*m_SmallGrid));//plotrec.left=x0+i*w/(10*m_SmallGrid);//注意：i*w/(10*m_SmallGrid)和w/(10*m_SmallGrid)*i误差挺大
		plotrec.setRight(x0+(i+1)*w/(10*m_SmallGrid));
		plotrec.setBottom(y0);
		float y=(float)point[i]/(float)pmax;//y=(float)point[i]/(float)pmax;
		plotrec.setTop(y0-y*h*hmax/m_Ymax);
		float left=m_Xmin+i*(m_Xmax-m_Xmin)/(10*m_SmallGrid);
		float right=m_Xmin+(i+1)*(m_Xmax-m_Xmin)/(10*m_SmallGrid);
		if(left>=m_Xmax2||right<=m_Xmin2)paint.setBrush(Qt::green);
		//if(i<ibegin||i>iend)dc.FillRect(plotrec,&GreenBrush);
		else paint.setBrush(Qt::red);
		paint.drawRect(plotrec);
	}
	if(!m_DrawLjpl) {
		paint.end();
		return;
	}
	//画累计频率线
	int pp=0;
	  QPen pen(Qt::red);
    pen.setStyle(Qt::SolidLine);
    pen.setWidth(2);
	paint.setPen(pen);
	float x1=x0,y1=y0;
	for(int i=0;i<10*m_SmallGrid;i++)
	{
		pp+=point[i];
		float x=x0+(float)((i+1.)*w/(10.*m_SmallGrid));
		float y=(float)pp/(float)ShowPoint;//ptotal;
		paint.drawLine(x1,y1,x,y0-y*h);
		x1=x,y1=y0-y*h;
	}
    paint.end();

}