/
a_scan_widget.cpp
58 lines (47 loc) · 1.08 KB
/
a_scan_widget.cpp
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/**
* @file a_scan_widget.cpp
* @brief 画A扫
* @author Jake Yang <yanghuanjie@cndoppler.cn>
* @date 2017-06-28
*/
#include "a_scan_widget.h"
#include <QPainter>
#include <QDebug>
AscanWidget::AscanWidget(QWidget *parent):
QWidget(parent),
m_color("#ffff77")
{
}
void AscanWidget::show(const QByteArray &b)
{
if (b.size() == 0) {
return;
}
m_beam.setRawData(b.constData(), b.size());
update();
}
QPainterPath AscanWidget::paint_wave()
{
QPainterPath path;
float xRatio1 = 1.0;
float xRatio2 = 1.0;
float yRatio = y_axis_length() / 255.0;
int drawPoints = 0;
if ( m_beam.size() < x_axis_length()) {
xRatio1 = x_axis_length() / 1.0 / m_beam.size();
drawPoints = m_beam.size();
} else {
xRatio2 = m_beam.size() / 1.0 / x_axis_length();
drawPoints = x_axis_length();
}
for (int i = 0; i < drawPoints; ++i) {
path.lineTo( i*xRatio1,
((quint8)(m_beam.at((int)(i*xRatio2)))) * yRatio + 0.5);
}
return path;
}
/*
QPainterPath AscanWidget::paint_gate()
{
}
*/