118 lines
2.2 KiB
C++
118 lines
2.2 KiB
C++
#include "VirtualScope.h"
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VirtualScope::VirtualScope(QWidget *parent) : QWidget(parent)
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{
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}
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VirtualScope::~VirtualScope()
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{
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}
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void VirtualScope::mouseReleaseEvent(QMouseEvent *e)
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{
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qDebug() << "VirtualScope release" << e;
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}
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void VirtualScope::mousePressEvent(QMouseEvent *e)
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{
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qDebug() << "VirtualScope press" << e;
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}
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void VirtualScope::mouseDoubleClickEvent(QMouseEvent *e)
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{
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qDebug() << "VirtualScope double clicked" << e;
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}
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void VirtualScope::wheelEvent(QWheelEvent *e)
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{
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qDebug() << e;
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}
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void VirtualScope::paintEvent(QPaintEvent *)
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{
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//qreal scale = 4000.0;
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QPainter painter(this);
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painter.setRenderHint(QPainter::Antialiasing); /* 使用反锯齿(如果可用) */
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painter.setRenderHint(QPainter::TextAntialiasing);
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painter.setRenderHint(QPainter::SmoothPixmapTransform);
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painter.translate(width() / 2, height() / 2); /* 坐标变换为窗体中心 */
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//int side = qMin(width(), height()); /* 这一句决定了这个模块只能是方形 */
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//painter.scale(side / scale, side / scale); /* 比例缩放 */
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painter.setPen(Qt::NoPen);
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drawBackground(&painter);
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}
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void VirtualScope::drawBackground(QPainter *painter)
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{
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QPen pen;
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QFont font;
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float w = width();
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float h = height();
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//画大黑背景
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painter->save();
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painter->setBrush(Qt::black);
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painter->drawRect(-w/2,-h/2,w,h);
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painter->restore();
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//画坐标系
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painter->save();
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//painter->translate(-200,0);
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//水平，垂直虚线
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pen.setColor(QColor("#FFFFFF"));
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pen.setWidthF(1);
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painter->setPen(pen);
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font.setPointSize(15);
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font.setFamily("Arial");//非衬线
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painter->setFont(font);
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//水平分成8个格,竖直分成10个格
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float g_h = (h - 50)/8;
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float g_w = (w - 50)/10;
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for(int i = -4;i <= 4;i++)
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{
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painter->drawLine(-(w - 50)/2,g_h * i,(w - 50)/2,g_h * i);
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}
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//水平分成10条线
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for(int i = -5;i <= 5;i++)
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{
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painter->drawLine(g_w * i,-(h - 50)/2,g_w * i,(h - 50)/2);
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painter->drawText(QRect(g_w * i - 100,(h - 50)/2,200,20), Qt::AlignCenter,QString::number(i));
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}
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painter->restore();
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}
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