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重写图线显示

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This commit is contained in:
hm
2020-08-13 12:28:38 +08:00
parent dfd6a6e08c
commit 7491439a9b
6 changed files with 262 additions and 111 deletions
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App/ComponentUI/Scope/Chart.cpp
+161 -2
View File
@@ -1,6 +1,165 @@
#include "Chart.h"
#include "Chart.h"
Chart::Chart(QObject *parent) : QObject(parent)
Chart::Chart(QChart *chart, QWidget *parent)
{
chart->legend()->setAlignment(Qt::AlignRight);
chart->legend()->setMarkerShape(QLegend::MarkerShapeCircle);
chart->setTheme(QChart::ChartThemeLight);
QValueAxis *axisX = new QValueAxis();
axisX->setRange(-5, 5);
axisX->setTickCount(11);
axisX->setLabelFormat("%.2f");
chart->addAxis(axisX, Qt::AlignBottom);
QValueAxis *axisY = new QValueAxis();
axisY->setRange(-3, 3);
axisY->setTickCount(7);
axisY->setLabelFormat("%.2f");
chart->addAxis(axisY, Qt::AlignLeft);
setParent(parent);
setChart(chart);
}
Chart::Chart(QWidget *parent)
{
setParent(parent);
chart()->legend()->setAlignment(Qt::AlignRight);
chart()->legend()->setMarkerShape(QLegend::MarkerShapeCircle);
chart()->setTheme(QChart::ChartThemeLight);
QValueAxis *axisX = new QValueAxis();
axisX->setRange(-5, 5);
axisX->setTickCount(11);
axisX->setLabelFormat("%.2f");
chart()->addAxis(axisX, Qt::AlignBottom);
QValueAxis *axisY = new QValueAxis();
axisY->setRange(-3, 3);
axisY->setTickCount(7);
axisY->setLabelFormat("%.2f");
chart()->addAxis(axisY, Qt::AlignLeft);
}
Chart::~Chart()
{
}
void Chart::mouseMoveEvent(QMouseEvent *e)
{
const QPoint curPos = e->pos();
if (isPress)
{
QPoint offset = curPos - lastPoint;
lastPoint = curPos;
chart()->scroll(-offset.x(), offset.y());
}
}
void Chart::mouseReleaseEvent(QMouseEvent *e)
{
isPress = false;
setCursor(Qt::ArrowCursor);
}
void Chart::mousePressEvent(QMouseEvent *e)
{
if (e->button() == Qt::RightButton)
{
lastPoint = e->pos();
isPress = true;
setCursor(Qt::ClosedHandCursor);
}
}
void Chart::mouseDoubleClickEvent(QMouseEvent *e)
{
qDebug() << "Chart double clicked" << e;
}
void Chart::wheelEvent(QWheelEvent *e)
{
//以鼠标坐标为中心进行缩放
QPointF curVal = chart()->mapToValue(QPointF(e->pos()));
//缩放比例
const double factor = 1.5;
switch(e->modifiers())
{
case Qt::ControlModifier://垂直缩放
{
QValueAxis *axis = dynamic_cast<QValueAxis*>(chart()->axisY());
const double Min = axis->min();
const double Max = axis->max();
const double Central = curVal.y();
double bottomOffset;
double topOffset;
if (e->delta() > 0)
{//放大
bottomOffset = 1.0 / factor * (Central - Min);
topOffset = 1.0 / factor * (Max - Central);
}
else
{//缩小
bottomOffset = 1.0 * factor * (Central - Min);
topOffset = 1.0 * factor * (Max - Central);
}
chart()->axisY()->setRange(Central - bottomOffset, Central + topOffset);
}break;
case Qt::ShiftModifier://水平缩放
{
QValueAxis *axis = dynamic_cast<QValueAxis*>(chart()->axisX());
const double Min = axis->min();
const double Max = axis->max();
const double Central = curVal.x();
double bottomOffset;
double topOffset;
if (e->delta() > 0)
{//放大
bottomOffset = 1.0 / factor * (Central - Min);
topOffset = 1.0 / factor * (Max - Central);
}
else
{//缩小
bottomOffset = 1.0 * factor * (Central - Min);
topOffset = 1.0 * factor * (Max - Central);
}
chart()->axisX()->setRange(Central - bottomOffset, Central + topOffset);
}break;
default://水平移动
{
QValueAxis *axis = dynamic_cast<QValueAxis*>(chart()->axisX());
qreal dwidth = chart()->plotArea().width()/(axis->tickCount()*2);
if(e->delta() > 0)
{
chart()->scroll(-dwidth,0);
}
else if(e->delta() < 0)
{
chart()->scroll(dwidth,0);
}
}
}
}
void Chart::resizeEvent(QResizeEvent *e)
{
//qDebug() << e;
//Q_UNUSED(e)
chart()->setPos(0,0);
chart()->setGeometry(this->geometry());
}
bool Chart::event(QEvent *event)
{
return QGraphicsView::event(event);
}
App/ComponentUI/Scope/Chart.h
+47 -3
View File
@@ -1,16 +1,60 @@
#ifndef CHART_H
#ifndef CHART_H
#define CHART_H
#include <QObject>
#include "QWidget"
#include "QDebug"
#include "QChart"
#include <QChartView>
#include <QLineSeries>
#include <QValueAxis>
#include <QDateTimeAxis>
#include <QSplineSeries>
class Chart : public QObject
#include <QMouseEvent>
#include <QGraphicsSimpleTextItem>
using namespace QtCharts;
class Chart : public QChartView
{
Q_OBJECT
public:
explicit Chart(QObject *parent = nullptr);
explicit Chart( QWidget *parent = nullptr);
explicit Chart(QChart *chart, QWidget *parent = nullptr);
~Chart();
protected:
bool event(QEvent *event);
void mouseMoveEvent(QMouseEvent *e);
void mouseReleaseEvent(QMouseEvent *e);
void mousePressEvent(QMouseEvent *e);
void mouseDoubleClickEvent(QMouseEvent *e);
void wheelEvent(QWheelEvent *e);
void resizeEvent(QResizeEvent *e);
signals:
private:
QGraphicsSimpleTextItem *m_coordItem;
QVariant m_xMin;
QVariant m_xMax;
QVariant m_yMin;
QVariant m_yMax;
QPoint lastPoint;
bool isPress = false;
};
#endif // CHART_H
App/ComponentUI/Scope/Scope.cpp
+30 -98
View File
@@ -20,42 +20,21 @@ Scope::Scope(QWidget *parent) :
this->setStyleSheet(stylesheet);
file.close();
timeseries = 0;
chartView = new QChartView(this);
chartView = new Chart(this);//new QChartView(this);
chartView->setRenderHint(QPainter::Antialiasing);
chartView->chart()->legend()->setAlignment(Qt::AlignRight);
chartView->chart()->legend()->setMarkerShape(QLegend::MarkerShapeCircle);
chartView->chart()->setTheme(QChart::ChartThemeLight);
//chartView->setMouseTracking(true);
//chartView->setRubberBand(QChartView::RectangleRubberBand);
//chartView->chart()->setAcceptDrops(true);
QValueAxis *axisX = new QValueAxis();
axisX->setRange(-5, 5);
axisX->setTickCount(11);
axisX->setLabelFormat("%.2f");
chartView->chart()->addAxis(axisX, Qt::AlignBottom);
QValueAxis *axisY = new QValueAxis();
axisY->setRange(-3, 3);
axisY->setTickCount(7);
axisY->setLabelFormat("%.2f");
chartView->chart()->addAxis(axisY, Qt::AlignLeft);
chartView->setGeometry(ui->frame->geometry());
//默认不使用，因为使用显卡加速图形会闪
setUseOpenGL(false);
updateTimer = new QTimer(this);
connect(updateTimer,SIGNAL(timeout()),
this,SLOT(timeout()));
updateTimer->start(50);//20hz刷新
qInfo() << "Scope inital ready";
}
Scope::~Scope()
@@ -67,98 +46,33 @@ Scope::~Scope()
void Scope::mouseMoveEvent(QMouseEvent *e)
{
//移动整幅图
qDebug() << "Scope Move" << e;
QWidget::mouseMoveEvent(e);
}
void Scope::mouseReleaseEvent(QMouseEvent *e)
{
qDebug() << "Scope release" << e;
isPress = false;
QWidget::mouseReleaseEvent(e);
}
void Scope::mousePressEvent(QMouseEvent *e)
{
qDebug() << "Scope press" << e;
isPress = true;
QWidget::mousePressEvent(e);
}
void Scope::mouseDoubleClickEvent(QMouseEvent *e)
{
qDebug() << "Scope double clicked" << e;
QWidget::mouseDoubleClickEvent(e);
}
void Scope::wheelEvent(QWheelEvent *e)
{
//以鼠标坐标为中心进行缩放
QPointF curVal = chartView->chart()->mapToValue(QPointF(e->pos()));
//缩放比例
const double factor = 1.5;
switch(e->modifiers())
{
case Qt::ControlModifier://垂直缩放
{
QValueAxis *axis = dynamic_cast<QValueAxis*>(chartView->chart()->axisY());
const double Min = axis->min();
const double Max = axis->max();
const double Central = curVal.y();
double bottomOffset;
double topOffset;
if (e->delta() > 0)
{//放大
bottomOffset = 1.0 / factor * (Central - Min);
topOffset = 1.0 / factor * (Max - Central);
}
else
{//缩小
bottomOffset = 1.0 * factor * (Central - Min);
topOffset = 1.0 * factor * (Max - Central);
}
chartView->chart()->axisY()->setRange(Central - bottomOffset, Central + topOffset);
}break;
case Qt::ShiftModifier://水平缩放
{
QValueAxis *axis = dynamic_cast<QValueAxis*>(chartView->chart()->axisX());
const double Min = axis->min();
const double Max = axis->max();
const double Central = curVal.x();
double bottomOffset;
double topOffset;
if (e->delta() > 0)
{//放大
bottomOffset = 1.0 / factor * (Central - Min);
topOffset = 1.0 / factor * (Max - Central);
}
else
{//缩小
bottomOffset = 1.0 * factor * (Central - Min);
topOffset = 1.0 * factor * (Max - Central);
}
chartView->chart()->axisX()->setRange(Central - bottomOffset, Central + topOffset);
}break;
default://水平移动
{
QValueAxis *axis = dynamic_cast<QValueAxis*>(chartView->chart()->axisX());
qreal dwidth = chartView->chart()->plotArea().width()/(axis->tickCount()*2);
if(e->delta() > 0)
{
chartView->chart()->scroll(-dwidth,0);
}
else if(e->delta() < 0)
{
chartView->chart()->scroll(dwidth,0);
}
}
}
QWidget::wheelEvent(e);
}
void Scope::resizeEvent(QResizeEvent *e)
{
Q_UNUSED(e)
chartView->setGeometry(ui->frame->geometry());
QWidget::resizeEvent(e);
}
void Scope::timeout(void)//100Hz
@@ -175,8 +89,8 @@ void Scope::chartUpdate(void)
//读取新数据，如果没有，那就保持
//滚动显示器
//当到达最大时（0.95），开始滚动
//当到达最大时（0.95），开始滚动
if(isScroll == true)
{
QValueAxis *axis = dynamic_cast<QValueAxis*>(chartView->chart()->axisX());
@@ -186,8 +100,6 @@ void Scope::chartUpdate(void)
chartView->chart()->scroll(dwidth * 0.01,0);//每次增加0.01
}
}
}
@@ -318,6 +230,26 @@ bool Scope::addSeries(QString name = tr("new"),QColor color = QColor("#FFFFFF"))
void Scope::setSerieData(QString name,QVariant data)
{
//出新了比以前更大或者更小的值，那么就设置一下量程
{
QValueAxis *axis = dynamic_cast<QValueAxis*>(chartView->chart()->axisY());
if(data.toDouble() > axis->max())
{
//设置最大值
const double Min = axis->min();
chartView->chart()->axisY()->setRange(Min, data.toDouble() * 1.1);
}
else if(data.toDouble() < axis->min())
{
//设置最小值
const double Max = axis->max();
chartView->chart()->axisY()->setRange(data.toDouble() * 1.1, Max);
}
//delete axis;
}
//获取当前的时间撮
//series->append(timeseries,data.toFloat());
//查找有没有这个名字的序列
App/ComponentUI/Scope/Scope.h
+8 -2
View File
@@ -17,6 +17,9 @@
#include "QMimeData"
#include "Chart.h"
using namespace QtCharts;
@@ -99,7 +102,7 @@ private slots:
private:
Ui::Scope *ui;
QChartView *chartView;
Chart *chartView;
QLineSeries *series;
QTimer *updateTimer = nullptr;
@@ -109,7 +112,10 @@ private:
bool isOpenGL = false;
bool isScroll = true;
bool isPress = false;
double maxValue;
double minValue;
//Chart *mychart = nullptr;
};