#include "VirtualScope.h"



VirtualScope::VirtualScope(QWidget *parent) : QWidget(parent)
{

}

VirtualScope::~VirtualScope()
{

}

void VirtualScope::mouseReleaseEvent(QMouseEvent *e)
{
    qDebug() << "VirtualScope release" << e;
}

void VirtualScope::mousePressEvent(QMouseEvent *e)
{
    qDebug() << "VirtualScope press" << e;
}

void VirtualScope::mouseDoubleClickEvent(QMouseEvent *e)
{
    qDebug() << "VirtualScope double clicked" << e;
}

void VirtualScope::wheelEvent(QWheelEvent *e)
{
    qDebug() << e;
}



void VirtualScope::paintEvent(QPaintEvent *)
{
    //qreal scale = 4000.0;

    QPainter painter(this);
    painter.setRenderHint(QPainter::Antialiasing); 	/* 使用反锯齿(如果可用) */
    painter.setRenderHint(QPainter::TextAntialiasing);
    painter.setRenderHint(QPainter::SmoothPixmapTransform);

    painter.translate(width() / 2,  height() / 2);	/* 坐标变换为窗体中心 */
    //int side = qMin(width(), height());                 /* 这一句决定了这个模块只能是方形 */
    //painter.scale(side / scale, side / scale);	/* 比例缩放 */
    painter.setPen(Qt::NoPen);

    drawBackground(&painter);

}


void VirtualScope::drawBackground(QPainter *painter)
{
     QPen pen;
     QFont font;

     float w = width();
     float h = height();

     //画大黑背景
     painter->save();
     painter->setBrush(Qt::black);
     painter->drawRect(-w/2,-h/2,w,h);
     painter->restore();


     //画坐标系
     painter->save();

     //painter->translate(-200,0);

     //水平，垂直虚线
     pen.setColor(QColor("#FFFFFF"));
     pen.setWidthF(1);
     painter->setPen(pen);

     font.setPointSize(15);
     font.setFamily("Arial");//非衬线
     painter->setFont(font);

     //水平分成8个格,竖直分成10个格
     float g_h = (h - 50)/8;
     float g_w = (w - 50)/10;

     for(int i = -4;i <= 4;i++)
     {
        painter->drawLine(-(w - 50)/2,g_h * i,(w - 50)/2,g_h * i);
     }

     //水平分成10条线
     for(int i = -5;i <= 5;i++)
     {
        painter->drawLine(g_w * i,-(h - 50)/2,g_w * i,(h - 50)/2);
        painter->drawText(QRect(g_w * i - 100,(h - 50)/2,200,20), Qt::AlignCenter,QString::number(i));
     }

     painter->restore();



}