前言

项目源码： 传送门
|版本声明：山河君，未经博主允许，禁止转载

1.介绍

Qt图标（Qt Charts）出现晚于QWT、QCustomPlot，界面看起来也很优美，最主要的是要比后两种实现起来方便许多，当然，在自主灵活性上面就差了一点。
QChart已经集成在Qt5.7中，使用时在项目文件中加QT += charts即可，不过在安装Qt过程中，QChart默认时不勾选的，在安装时需要用户自行勾选。

2.效果

柱状图：可设置标题栏，X轴标题， Y轴标题，柱形颜色，轴刻度，是否显示提示信息（柱形颜色含义）等

饼状图：可设置空心圆、实心圆、点击扇形弹出（信息可编辑）、提示信息（扇形颜色含义）、空心大小比例，图形名称等

折线图：可多条线一起显示、X轴名称、刻度尺，Y轴名称、刻度尺，提示信息，图形名称，X轴为时间轴等

曲线图：可多条线一起显示、X轴名称、刻度尺，Y轴名称、刻度尺，提示信息，图形名称，X轴为时间轴等

一、实现（以下代码必要部分都已加注释）

1.集成后的CMyChart

由于我的负责的项目中，以上四种图形都需要使用，所以使用开闭将这四种集成了一下，如果只使用一种，那么这一部分可以过滤不看，只需要将项目中的文件单独拿出来即可。
调用顺序：GetChartWithType->SetAxisXRange/SetAxisYRange/SetDateTimeAxisX->SetAxisXTitle/SetAxisYTitle->AppendSeries
头文件

#ifndef CMYCHART_H
#define CMYCHART_H#include <QObject>
#include <QtCharts>QT_CHARTS_USE_NAMESPACEstruct BarDateInfo
{QString qsKey;QVector<qreal> vecVal;
};class CMyChart : public QObject
{Q_OBJECTpublic:enum EType{eInvalid,       //无效eBarChart,      //柱状图ePieChart,      //饼状图eLineChart,     //折线图eSplineChart    //曲线图};enum EColor{eBlue,          //蓝色eGreen,         //绿色eYellow,        //黄色ePurple,        //紫色eRed,           //红色eLightBlue,     //淡蓝色eLightGreen,    //淡绿色eLightYellow,   //淡黄色eLightPurple,   //淡紫色};public:CMyChart(const CMyChart::EType& type, QChartView* pView, QObject *parent = nullptr);virtual ~CMyChart();public://根据选择的图形，返回CMyChartstatic CMyChart* GetChartWithType(const EType& eType, QChartView* pView);//根据传入颜色转换成QColorQColor toQColor(const EColor& eColor);public://清空界面上显示的图形virtual void ClearGraphical() = 0;//设置提示信息是否显示void SetLegend(bool bLegend = true);//设置标题栏void SetTitle(const QString& qsTitle);//设置X轴坐标、刻度尺，柱状图、饼状图调此接口无用virtual void SetAxisXRange(const qreal& qMin = 0, const qreal& qMax = 10, const int& nTickCount = 5){};//设置Y轴坐标、刻度尺，柱状图、饼状图调此接口无用virtual void SetAxisYRange(const qreal& qMin = 0, const qreal& qMax = 10, const int& nTickCount = 5){};//设置时间坐标轴，柱状图、饼状图调此接口无用virtual void SetDateTimeAxisX(const QDateTime& dtStart,const QDateTime& dtEnd,const QString& qsFormat = "yyyy-MM-dd",const int& nTickCount = 5){};//设置X轴标题，饼状图调此接口无用virtual void SetAxisXTitle(const QString& qsAxisXTitle){};//设置Y轴标题，柱状图调此接口无用virtual void SetAxisYTitle(const QString& qsAxisYTitle){};//柱状图添加一组数据virtual void AppendSeries(const QString& qsAxisXName,QMap<QString, qreal>& mapData,const QVector<EColor>& vecColors = m_vecDefCol){};//饼状图添加数据virtual void AppendSeries(QMap<QString, qreal>& mapData, const QVector<EColor>& vecColors = m_vecDefCol){};//折线图、曲线图添加一条线virtual void AppendSeries(const QString& name, QMap<qreal, qreal> mapVal){};//折线图、曲线图添加坐标轴为时间的一条线virtual void AppendSeries(const QString& name, QMap<QDateTime, qreal> mapVal){};public:EType                   m_eType;QChart*                 m_pChart;QChartView*             m_pChartView;static QVector<EColor>  m_vecDefCol;    //默认颜色顺序
};#endif // CMYCHART_H

源文件：

#include "CMyChart.h"
#include "CMyBarChart.h"
#include "CMyPieChart.h"
#include "CMyLineChart.h"
#include "CMySplineChart.h"QVector<CMyChart::EColor> CMyChart::m_vecDefCol = {eBlue, eGreen, eYellow, ePurple, eRed, eLightBlue, eLightGreen, eLightYellow, eLightPurple};CMyChart::CMyChart(const CMyChart::EType& type, QChartView* pView, QObject *parent): QObject (parent), m_eType(type), m_pChartView(pView)
{m_pChart = new QChart;m_pChart->setAnimationOptions(QChart::SeriesAnimations);m_pChart->legend()->setVisible(true);       //设置提示打开（默认打开）m_pChart->legend()->show();     //显示提示m_pChart->layout()->setContentsMargins(0, 0, 0, 0);    //设置布局边距m_pChart->setMargins(QMargins(0, 0, 0, 0)); //设置控件边距m_pChart->setBackgroundRoundness(0);    //保存图表背景角上的圆角的直径。m_pChartView->setChart(m_pChart);m_pChartView->setRenderHint(QPainter::Antialiasing);    //防图形走样
}CMyChart::~CMyChart()
{}CMyChart* CMyChart::GetChartWithType(const EType &eType, QChartView *pView)
{if(pView == NULL)return NULL;switch (eType){case eInvalid:return NULL;case eBarChart:return new CMyBarChart(eType, pView);case ePieChart:return new CMyPieChart(eType, pView);case eLineChart:return new CMyLineChart(eType, pView);case eSplineChart:return new CMySplineChart(eType, pView);default:return NULL;}
}QColor CMyChart::toQColor(const EColor &eColor)
{switch (eColor){case eBlue:return QColor(0, 122, 255);case eGreen:return QColor(27, 201, 133);case eYellow:return QColor(255,168, 0);case ePurple:return QColor(37, 217, 255);case eRed:return QColor(252, 79, 76);case eLightBlue:return QColor(104, 153, 255);case eLightGreen:return QColor(37, 217, 255);case eLightYellow:return QColor(255, 211, 35);case eLightPurple:return QColor(212, 139, 250);default:return QColor(0, 122, 255);}
}void CMyChart::SetLegend(bool bLegend)
{if(bLegend)m_pChart->legend()->show();elsem_pChart->legend()->hide();
}void CMyChart::SetTitle(const QString &qsTitle)
{m_pChart->setTitle(qsTitle);
}

2.柱状图实现

头文件：

#ifndef CMYBARCHART_H
#define CMYBARCHART_H#include <QObject>
#include "CMyChart.h"class CMyBarChart : public CMyChart
{Q_OBJECT
public:explicit CMyBarChart(const CMyChart::EType& type, QChartView* pView, QObject *parent = nullptr);virtual ~CMyBarChart();public:virtual void ClearGraphical();virtual void SetAxisXTitle(const QString& qsAxisXTitle);virtual void SetAxisYTitle(const QString& qsAxisYTitle);virtual void SetAxisYRange(const qreal& qMin = 0, const qreal& qMax = 10, const int& nTickCount = 5);virtual void AppendSeries(const QString& qsAxisXName,QMap<QString, qreal>& mapData,const QVector<EColor>& vecColors = m_vecDefCol);private:QValueAxis*             m_pBarAxisY;QBarSeries*             m_pBarSeries;QVector<QBarSet*>       m_vecBarSet;QBarCategoryAxis*       m_pBarAxisX;
};#endif // CMYBARCHART_H

源文件

#include "CMyBarChart.h"CMyBarChart::CMyBarChart(const CMyChart::EType& type, QChartView* pView, QObject *parent): CMyChart(type, pView, parent)
{m_pBarSeries = new QBarSeries;          //创建分组系列m_pBarSeries->setLabelsVisible(true);   //设置显示柱形图值m_pBarSeries->setLabelsPosition(QAbstractBarSeries::LabelsInsideEnd);   //设置值位置m_pChart->addSeries(m_pBarSeries);      //将分组放入chart容器m_pChart->createDefaultAxes();          //创建默认坐标轴m_pChart->legend()->setAlignment(Qt::AlignBottom);  //设置提示说明位置m_vecBarSet.fill(NULL, 10);     //默认最多只能有10个柱子
}CMyBarChart::~CMyBarChart()
{delete m_pBarSeries;delete m_pBarAxisX;delete m_pBarAxisY;
}void CMyBarChart::ClearGraphical()
{for(QVector<QBarSet*>::iterator it = m_vecBarSet.begin(); it != m_vecBarSet.end(); it++){if(*it != NULL)delete *it;}m_vecBarSet.fill(NULL, 10); //默认最多只有10种类型的柱子m_pBarAxisX->clear();m_pBarSeries->clear();
}void CMyBarChart::SetAxisXTitle(const QString &qsAxisXTitle)
{m_pBarAxisX->setTitleText(qsAxisXTitle);
}void CMyBarChart::SetAxisYTitle(const QString &qsAxisYTitle)
{m_pBarAxisY->setTitleText(qsAxisYTitle);
}void CMyBarChart::SetAxisYRange(const qreal& qMin, const qreal& qMax, const int& nTickCount)
{m_pBarAxisX = new QBarCategoryAxis;     //创建X轴m_pBarAxisY = new QValueAxis;           //创建Y轴m_pBarAxisX->setLabelsAngle(-45);       //设置X轴坐标倾斜m_pBarAxisY->setGridLineVisible(false); //设置网格不可见m_pBarAxisY->setRange(qMin, qMax);m_pBarAxisY->setTickCount(nTickCount);m_pChart->setAxisX(m_pBarAxisX, m_pBarSeries);  //将X坐标轴和分组进行统一m_pChart->setAxisY(m_pBarAxisY, m_pBarSeries);  //将Y坐标轴和分组进行统一
}/** 一个QBarSet代表的是同一颜色的柱形，里面存放多个柱子的值* 此接口先将一组数据作为柱子类型数的最大大小，然后根据先后顺序给柱子添加数据*/
void CMyBarChart::AppendSeries(const QString &qsAxisXName, QMap<QString, qreal>& mapData, const QVector<EColor> &vecColors)
{QMap<QString, qreal>::iterator it = mapData.begin();for(int i = 0; i < mapData.size(); i++){if(m_vecBarSet[i] == NULL){m_vecBarSet[i] = new QBarSet(it.key());m_vecBarSet[i]->setColor(toQColor(vecColors[i]));}m_vecBarSet[i]->append(it.value());m_pBarSeries->append(m_vecBarSet[i]);it++;}m_pBarAxisX->append(qsAxisXName);
}

3.饼状图实现

头文件

#ifndef CMYPIECHART_H
#define CMYPIECHART_H#include <QObject>
#include "CMyChart.h"class CMyPieChart : public CMyChart
{Q_OBJECT
public:explicit CMyPieChart(const CMyChart::EType& type, QChartView* pView, QObject *parent = nullptr);virtual ~CMyPieChart();public:virtual void ClearGraphical();virtual void AppendSeries(QMap<QString, qreal>& mapData, const QVector<EColor>& vecColors = m_vecDefCol);private slots://点击扇形槽函数void ClickedSector(QPieSlice* pSlice);private:QPieSeries* m_pPieSeries;
};#endif // CMYPIECHART_H

源文件

#include "CMyPieChart.h"CMyPieChart::CMyPieChart(const CMyChart::EType& type, QChartView* pView, QObject *parent): CMyChart(type, pView, parent)
{m_pPieSeries = new QPieSeries;m_pPieSeries->setHoleSize(0.5);     //设置空心占比m_pPieSeries->setPieSize(0.8);      //设置圆形占比m_pChart->addSeries(m_pPieSeries);  //将饼图放入容器m_pChart->legend()->setAlignment(Qt::AlignRight);  //设置提示说明位置connect(m_pPieSeries, SIGNAL(clicked(QPieSlice*)), this, SLOT(ClickedSector(QPieSlice*))); //点击扇形
}CMyPieChart::~CMyPieChart()
{delete m_pPieSeries;
}void CMyPieChart::ClearGraphical()
{m_pPieSeries->clear();
}void CMyPieChart::ClickedSector(QPieSlice* pSlice)
{if(pSlice->isExploded())    //判断扇形有没有弹出{pSlice->setExploded(false);pSlice->setLabelVisible(false);}else {pSlice->setExploded(true);      //设置扇形弹出pSlice->setLabelVisible(true);  //设置扇形提示}
}void CMyPieChart::AppendSeries(QMap<QString, qreal> &mapData, const QVector<EColor> &vecColors)
{m_pPieSeries->clear();QMap<QString, qreal>::iterator it = mapData.begin();for(int i = 0; i < mapData.size(); i++){QPieSlice* pSlice = new QPieSlice(it.key(), it.value());pSlice->setLabel(it.key());pSlice->setColor(toQColor(vecColors[i]));m_pPieSeries->append(pSlice);it++;}}

4.折线图实现

头文件

#ifndef CMYLINECHART_H
#define CMYLINECHART_H#include <QObject>
#include "CMyChart.h"class CMyLineChart : public CMyChart
{Q_OBJECT
public:explicit CMyLineChart(const CMyChart::EType& type, QChartView* pView, QObject *parent = nullptr);~CMyLineChart();public:virtual void ClearGraphical();virtual void SetAxisXRange(const qreal& qMin = 0, const qreal& qMax = 10, const int& nTickCount = 5);virtual void SetAxisYRange(const qreal& qMin = 0, const qreal& qMax = 10, const int& nTickCount = 5);virtual void SetAxisXTitle(const QString& qsAxisXTitle);virtual void SetAxisYTitle(const QString& qsAxisYTitle);virtual void SetDateTimeAxisX(const QDateTime& dtStart,const QDateTime& dtEnd,const QString& qsFormat = "yyyy-MM-dd",const int& nTickCount = 5);virtual void AppendSeries(const QString& name, QMap<qreal, qreal> mapVal);virtual void AppendSeries(const QString& name, QMap<QDateTime, qreal> mapVal);private:bool                    m_bIsDateTime;QValueAxis*             m_pLineAxisX;QValueAxis*             m_pLineAxisY;QDateTimeAxis*          m_pAxisDateTime;QVector<QLineSeries*>   m_vecLineSeries;
};#endif // CMYLINECHART_H

源文件

#include "CMyLineChart.h"CMyLineChart::CMyLineChart(const CMyChart::EType& type, QChartView* pView, QObject *parent): CMyChart(type, pView, parent)
{m_bIsDateTime = false;
}CMyLineChart::~CMyLineChart()
{for(QVector<QLineSeries*>::iterator it = m_vecLineSeries.begin(); it != m_vecLineSeries.end(); it++)delete *it;
}void CMyLineChart::ClearGraphical()
{for(QVector<QLineSeries*>::iterator it = m_vecLineSeries.begin(); it != m_vecLineSeries.end(); it++)delete *it;m_vecLineSeries.clear();
}void CMyLineChart::SetAxisXRange(const qreal &qMin, const qreal &qMax, const int &nTickCount)
{m_pLineAxisX = new QValueAxis;m_pLineAxisX->setRange(qMin, qMax);m_pLineAxisX->setTickCount(nTickCount);m_pChart->addAxis(m_pLineAxisX, Qt::AlignBottom);
}void CMyLineChart::SetAxisYRange(const qreal &qMin, const qreal &qMax, const int &nTickCount)
{m_pLineAxisY = new QValueAxis;m_pLineAxisY->setRange(qMin, qMax);m_pLineAxisY->setTickCount(nTickCount);m_pLineAxisY->setGridLineVisible(false);m_pChart->addAxis(m_pLineAxisY, Qt::AlignLeft);
}void CMyLineChart::SetDateTimeAxisX(const QDateTime &dtStart, const QDateTime &dtEnd, const QString &qsFormat, const int &nTickCount)
{m_bIsDateTime = true;m_pAxisDateTime = new QDateTimeAxis;m_pAxisDateTime->setFormat(qsFormat);m_pAxisDateTime->setRange(dtStart, dtEnd);m_pAxisDateTime->setTickCount(nTickCount);m_pChart->addAxis(m_pAxisDateTime, Qt::AlignBottom);
}void CMyLineChart::SetAxisXTitle(const QString &qsAxisXTitle)
{if(m_bIsDateTime)m_pAxisDateTime->setTitleText(qsAxisXTitle);elsem_pLineAxisX->setTitleText(qsAxisXTitle);
}void CMyLineChart::SetAxisYTitle(const QString &qsAxisYTitle)
{m_pLineAxisY->setTitleText(qsAxisYTitle);
}void CMyLineChart::AppendSeries(const QString &name , QMap<qreal, qreal> mapVal)
{QLineSeries* pLineSeries = new QLineSeries;pLineSeries->setName(name);pLineSeries->setPointsVisible(true);pLineSeries->setPointLabelsVisible(true);   //设置显示点位m_pChart->addSeries(pLineSeries);for(QMap<qreal, qreal>::iterator it = mapVal.begin(); it != mapVal.end(); it++)pLineSeries->append(it.key(), it.value());m_vecLineSeries.push_back(pLineSeries);pLineSeries->attachAxis(m_pLineAxisX);pLineSeries->attachAxis(m_pLineAxisY);
}void CMyLineChart::AppendSeries(const QString &name, QMap<QDateTime, qreal> mapVal)
{QLineSeries* pLineSeries = new QLineSeries;pLineSeries->setName(name);pLineSeries->setPointsVisible(true);pLineSeries->setPointLabelsVisible(false);   //设置显示点位m_pChart->addSeries(pLineSeries);for(QMap<QDateTime, qreal>::iterator it = mapVal.begin(); it != mapVal.end(); it++)pLineSeries->append(it.key().toMSecsSinceEpoch(), it.value());m_vecLineSeries.push_back(pLineSeries);pLineSeries->attachAxis(m_pAxisDateTime);pLineSeries->attachAxis(m_pLineAxisY);
}

5.曲线图实现

头文件

#ifndef CMYSPLINECHART_H
#define CMYSPLINECHART_H#include <QObject>
#include "CMyChart.h"class CMySplineChart : public CMyChart
{Q_OBJECT
public:explicit CMySplineChart(const CMyChart::EType& type, QChartView* pView, QObject *parent = nullptr);~CMySplineChart();public:virtual void ClearGraphical();virtual void SetAxisXRange(const qreal& qMin = 0, const qreal& qMax = 10, const int& nTickCount = 5);virtual void SetAxisYRange(const qreal& qMin = 0, const qreal& qMax = 10, const int& nTickCount = 5);virtual void SetAxisXTitle(const QString& qsAxisXTitle);virtual void SetAxisYTitle(const QString& qsAxisYTitle);virtual void SetDateTimeAxisX(const QDateTime& dtStart,const QDateTime& dtEnd,const QString& qsFormat = "yyyy-MM-dd",const int& nTickCount = 5);virtual void AppendSeries(const QString& name, QMap<qreal, qreal> mapVal);virtual void AppendSeries(const QString& name, QMap<QDateTime, qreal> mapVal);signals:public slots:private:bool                        m_bIsDateTime;QValueAxis*                 m_pLineAxisX;QValueAxis*                 m_pLineAxisY;QDateTimeAxis*              m_pAxisDateTime;QVector<QSplineSeries*>     m_vecSplineSeries;
};#endif // CMYSPLINECHART_H

源文件

#include "CMySplineChart.h"CMySplineChart::CMySplineChart(const CMyChart::EType& type, QChartView* pView, QObject *parent): CMyChart(type, pView, parent)
{m_bIsDateTime = false;
}CMySplineChart::~CMySplineChart()
{for(QVector<QSplineSeries*>::iterator it = m_vecSplineSeries.begin(); it != m_vecSplineSeries.end(); it++)delete *it;
}void CMySplineChart::ClearGraphical()
{for(QVector<QSplineSeries*>::iterator it = m_vecSplineSeries.begin(); it != m_vecSplineSeries.end(); it++)delete *it;m_vecSplineSeries.clear();
}void CMySplineChart::SetAxisXRange(const qreal &qMin, const qreal &qMax, const int &nTickCount)
{m_pLineAxisX = new QValueAxis;m_pLineAxisX->setRange(qMin, qMax);m_pLineAxisX->setTickCount(nTickCount);m_pChart->addAxis(m_pLineAxisX, Qt::AlignBottom);
}void CMySplineChart::SetAxisYRange(const qreal &qMin, const qreal &qMax, const int &nTickCount)
{m_pLineAxisY = new QValueAxis;m_pLineAxisY->setRange(qMin, qMax);m_pLineAxisY->setTickCount(nTickCount);m_pLineAxisY->setGridLineVisible(false);m_pChart->addAxis(m_pLineAxisY, Qt::AlignLeft);
}void CMySplineChart::SetDateTimeAxisX(const QDateTime &dtStart, const QDateTime &dtEnd, const QString &qsFormat, const int &nTickCount)
{m_bIsDateTime = true;m_pAxisDateTime = new QDateTimeAxis;m_pAxisDateTime->setFormat(qsFormat);m_pAxisDateTime->setRange(dtStart, dtEnd);m_pAxisDateTime->setTickCount(nTickCount);m_pChart->addAxis(m_pAxisDateTime, Qt::AlignBottom);
}void CMySplineChart::SetAxisXTitle(const QString &qsAxisXTitle)
{if(m_bIsDateTime)m_pAxisDateTime->setTitleText(qsAxisXTitle);elsem_pLineAxisX->setTitleText(qsAxisXTitle);
}void CMySplineChart::SetAxisYTitle(const QString &qsAxisYTitle)
{m_pLineAxisY->setTitleText(qsAxisYTitle);
}void CMySplineChart::AppendSeries(const QString &name , QMap<qreal, qreal> mapVal)
{QSplineSeries* pSplineSeries = new QSplineSeries;pSplineSeries->setName(name);pSplineSeries->setPointsVisible(true);pSplineSeries->setPointLabelsVisible(true);   //设置显示点位m_pChart->addSeries(pSplineSeries);for(QMap<qreal, qreal>::iterator it = mapVal.begin(); it != mapVal.end(); it++)pSplineSeries->append(it.key(), it.value());m_vecSplineSeries.push_back(pSplineSeries);pSplineSeries->attachAxis(m_pLineAxisX);pSplineSeries->attachAxis(m_pLineAxisY);
}void CMySplineChart::AppendSeries(const QString &name, QMap<QDateTime, qreal> mapVal)
{QSplineSeries* pSplineSeries = new QSplineSeries;pSplineSeries->setName(name);pSplineSeries->setPointsVisible(true);pSplineSeries->setPointLabelsVisible(false);   //设置显示点位m_pChart->addSeries(pSplineSeries);for(QMap<QDateTime, qreal>::iterator it = mapVal.begin(); it != mapVal.end(); it++)pSplineSeries->append(it.key().toMSecsSinceEpoch(), it.value());m_vecSplineSeries.push_back(pSplineSeries);pSplineSeries->attachAxis(m_pAxisDateTime);pSplineSeries->attachAxis(m_pLineAxisY);
}

二、使用

使用QChart需要对于widget进行提升

项目源码：传送门

码字不易，各位观众老爷，如果觉得有点用，还请点个赞，让我涨涨积分哈！

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地图图表、柱状图、条形图、折线图、中国地图、世界地图、省市地图、仪表盘、雷达图、饼图、散点图、气泡图、瀑布图、堆叠图、热力图、桑基图、关系图、漏斗图、Axure原型、rp原型、产品原型
地图图表.柱状图.条形图.折线图.中国地图.世界地图.省市地图.仪表盘.雷达图.饼图.散点图.瀑布图.气泡图.堆叠图.热力图.桑基图.关系图.漏斗图.Axure原型.rp原型.产品原型.大屏设计必备组 ...
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Qt实现柱状图、饼状图、折线图、曲线图

文章目录

前言