QT + halcon混合编程一个读取图像的项目2

在前面的项目上进行修改，增加了图片保存功能

需要实现的主要功能：1.读取指定的图像 2. 读取连接的相机图像 3.图像的保存

项目环境: win10 HALCON18.11 Qt 514

项目文件(.pro)

QT       += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

CONFIG += c++11

# The following define makes your compiler emit warnings if you use
# any Qt feature that has been marked deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS

# You can also make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0

SOURCES += \
    main.cpp \
    widget.cpp

HEADERS += \
    widget.h

# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target

#halcon配置代码，已经将include、lib拷贝到项目之下
win32: LIBS += -L$$PWD/lib/x64-win64/ -lhalcon
win32: LIBS += -L$$PWD/lib/x64-win64/ -lhalconc
win32: LIBS += -L$$PWD/lib/x64-win64/ -lhalconcpp
win32: LIBS += -L$$PWD/lib/x64-win64/ -lhalconcppxl
win32: LIBS += -L$$PWD/lib/x64-win64/ -lhalconcxl
win32: LIBS += -L$$PWD/lib/x64-win64/ -lhalconxl
win32: LIBS += -L$$PWD/lib/x64-win64/ -lhdevenginecpp
win32: LIBS += -L$$PWD/lib/x64-win64/ -lhdevenginecppxl
win32: LIBS += -L$$PWD/lib/x64-win64/ -llibiomp5md

INCLUDEPATH += $$PWD/include
DEPENDPATH += $$PWD/include

头文件Widget.h

#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>
#include <QLabel>
#include <QPushButton>
#include <QTabWidget>
#include <QGroupBox>
#include <QRadioButton>
#include <QVBoxLayout>
#include <QCheckBox>
#include <QDebug>
#include <QMouseEvent>
#include <QPainter>
#include <QLineEdit>
#include <QTextEdit>
#include<QFileDialog>
#include<QCoreApplication>
#include <QTimer>
#include <QPalette>
#include <QWidget>
#include <QMessageBox>
#include <QTabWidget>
#include <QGroupBox>
#include <QRadioButton>
#include <QVBoxLayout>
#include <QCheckBox>
#include <QDebug>
#include <QMouseEvent>
#include <QPainter>
#include <QLineEdit>
#include <QTextEdit>
#include <QComboBox>
#include <QMenu>
#include <QMenuBar>
#include <QMessageBox>
#include <QMouseEvent>
#include "halconcpp/HalconCpp.h"
#include "Halcon.h"
using namespace HalconCpp;


#pragma execution_character_set("utf-8") //支持中文

class Widget : public QWidget
{
    Q_OBJECT

public:
    Widget(QWidget *parent = nullptr);
    ~Widget();
private:
    QLabel *label;
    QPushButton *btn1;
    QPushButton *btn2;
    QPushButton *btn3;
    QPushButton *btn4;
    HTuple  hv_AcqHandle,hv_WindowHandle;
    HObject  ho_Image;
    HTuple  hv_Width, hv_Height;
    Hlong windID;
    QTimer *timer;
    Hlong  MainWndID;


    QTabWidget *tabwidget;
    QWidget *tab1;
    QWidget *tab2;
    QTextEdit *qle;
    QComboBox *cbox;

    HTuple  hv_Information, hv_ValueList;


    QMenu *m_pMenu;
    QAction *m_pa1,*m_pa2;

    void createWidget();
    void createMyMenu();

private slots:
    void on_clicked1();
    void on_clicked2();
    void on_clicked3();
    void on_clicked4();
    void camera();


    void onMenu1Event();
    void onMenu2Event();
protected:
    void mousePressEvent(QMouseEvent * event);//鼠标单击事件

};
#endif // WIDGET_H

C++文件Widget.cpp

#include "widget.h"

Widget::Widget(QWidget *parent)
    : QWidget(parent)
{
    //创建界面
    createWidget();

    //创建快捷菜单
    createMyMenu();



    timer = new QTimer(this);

    connect(timer,SIGNAL(timeout()),this,SLOT(camera()));


    connect(this->btn1,SIGNAL(clicked()),this,SLOT(on_clicked1()));
    connect(this->btn2,SIGNAL(clicked()),this,SLOT(on_clicked2()));
    connect(this->btn3,SIGNAL(clicked()),this,SLOT(on_clicked3()));
    connect(this->btn4,SIGNAL(clicked()),this,SLOT(on_clicked4()));


    connect(m_pa1,SIGNAL(triggered()),this,SLOT(onMenu1Event()));
    connect(m_pa2,SIGNAL(triggered()),this,SLOT(onMenu2Event()));

}

Widget::~Widget()
{
}

void Widget::createWidget(){

    this->setFixedSize(1000,575);
    this->setWindowTitle("图像读取");

    label = new QLabel(this);
    label->setGeometry(350,25,600,500);

    MainWndID = (Hlong)this->label->winId();
    OpenWindow(0, 0, label->width(), label->height(), MainWndID,
               "visible", "", &hv_WindowHandle);
    HDevWindowStack::Push(hv_WindowHandle);

    qle = new QTextEdit(this);
    //qle->setGeometry(25,325,300,200);
    qle->setGeometry(25,330,300,195);
    qle->setReadOnly(true);

    tabwidget = new QTabWidget(this);
    tab1 = new QWidget;
    tab2 = new QWidget;
    //tab3 = new QWidget;
    tabwidget->addTab(tab1, "读取指定图像");
    tabwidget->addTab(tab2, "读取相机图像");
    tabwidget->setGeometry(25, 25, 300, 300);
    tabwidget->setTabShape(QTabWidget::Triangular);

    QVBoxLayout *vbox1 = new QVBoxLayout;
    //vbox1->setAlignment(Qt::AlignTop|Qt::AlignHCenter);
    vbox1->setAlignment(Qt::AlignCenter);
    tab1->setLayout(vbox1);

    btn1 = new QPushButton();
    btn1->setFixedSize(100,50);
    btn1->setText("选择图片");

    vbox1->addWidget(btn1);

    QVBoxLayout *vbox2 = new QVBoxLayout;
    //vbox2->setSpacing(20);
    //vbox2->addStretch();
    //vbox2->setContentsMargins(0,9,0,9);
    //vbox2->setAlignment(Qt::AlignTop|Qt::AlignHCenter);
    //vbox2->setAlignment(Qt::AlignVCenter);
    vbox2->setAlignment(Qt::AlignHCenter);

    //vbox2->setAlignment(Qt::AlignJustify);
    //vbox2->addSpacing(10);
    //vbox2->setSpacing(20);


    tab2->setLayout(vbox2);

    btn2 = new QPushButton();
    btn2->setFixedSize(100,50);
    btn2->setText("打开相机");
    btn2->setEnabled(false);

    btn3 = new QPushButton();
    btn3->setFixedSize(100,50);
    btn3->setText("关闭相机");
    btn3->setEnabled(false);

    QVBoxLayout *vbox5 = new QVBoxLayout;
    vbox5->addWidget(btn2);
    vbox5->addWidget(btn3);
    vbox5->setAlignment(Qt::AlignHCenter);
    vbox5->setSpacing(20);


    btn4 = new QPushButton();
    btn4->setFixedSize(100,50);
    btn4->setText("检测相机");
    QVBoxLayout *vbox4 = new QVBoxLayout;
    vbox4->addWidget(btn4);
    vbox4->setAlignment(Qt::AlignHCenter);

    QVBoxLayout *vbox3 = new QVBoxLayout;
    cbox = new QComboBox();
    //cbox->setFixedSize(200,30);
    cbox->setFixedSize(200,35);
    vbox3->addWidget(cbox);
    vbox3->setAlignment(Qt::AlignHCenter);




    //vbox2->addWidget(btn4);
    QWidget *qw0 = new QWidget;
    qw0->setLayout(vbox4);
    vbox2->addWidget(qw0);


    //vbox2->addStretch();
    //vbox2->addWidget(cbox);
    QWidget *qw1 = new QWidget;
    qw1->setLayout(vbox3);
    vbox2->addWidget(qw1);


    //vbox2->addWidget(vbox3);

    //vbox2->addWidget(btn2);
    //vbox2->addWidget(btn3);
    QWidget *qw2 = new QWidget;
    qw2->setLayout(vbox5);
    vbox2->addWidget(qw2);

    //vbox2->addSpacing(50);

}


void Widget::createMyMenu(){
    //创造菜单对象
    m_pMenu = new QMenu(this);
    m_pa1 = m_pMenu->addAction("另存为");
    m_pa2 = m_pMenu->addAction("退出");
}


void Widget::mousePressEvent(QMouseEvent *event)
{
    //在鼠标右击的地方显示菜单
    /*
    if(e->button()==Qt::RightButton)
    {
        m_pMenu->exec(cursor().pos());
    }*/
    if(label->geometry().contains(this->mapFromGlobal(QCursor::pos())) //鼠标是否在界面上
            &&event->button()==Qt::RightButton)
    {
        qDebug() << "右键:快捷菜单" ;
        m_pMenu->exec(cursor().pos());
    }
}

void Widget::onMenu1Event(){
    //QMessageBox::information(this,"注意","保存图片");

    try
    {
        qDebug() << "另图片为";
        QString filename = QFileDialog::getSaveFileName(this,tr("Save Image"),"",tr("Images (*.png *.bmp *.jpg)")); //选择路径
        qDebug() << "图片路径:"<<filename;
        //分割路径，获得路径文件名，文件格式
        if(!(filename.isEmpty())) //文件路径不为空
        {
            QStringList strList = filename.split(".");
            //QString type = strList[1];
            //halcon的字符是Htuple格式需要转化，使用前需要转换下
            QByteArray Qa1 = strList[0].toLatin1();
            const char *str1 = Qa1.data();
            HTuple  ImageName(str1);

            QByteArray Qa2 = strList[1].toLatin1();
            const char *str2 = Qa2.data();
            HTuple  ImageType(str2);

            //WriteImage(ho_Image, "jpg", 0, "C:/Users/admin/Desktop/1.jpg");
            WriteImage(ho_Image, ImageType, 0, ImageName);

        }

    }
    catch (HException &HDevExpDefaultException)
    {
        HTuple  hv_Exception;
        HDevExpDefaultException.ToHTuple(&hv_Exception);
        qDebug() << "保存图片失败";
    }
}

void Widget::onMenu2Event(){
    //close();
    //this->close();
    qDebug() << "退出";
    close();
}


void Widget::on_clicked1(){
    qDebug() << "按下了1号按钮，读取图片";
    try
    {
        QString file_name;
        file_name = QFileDialog::getOpenFileName(this,tr("open  file"),".",tr("Video Files(*.bmp *.jpg *.pbm *.pgm *.png *.ppm *.xbm *.xpm)"));

        qle->setText("读取图像："+file_name);

        QByteArray ba = file_name.toLatin1();
        const char *str = ba.data();
        HTuple  ImageName(str);

        ReadImage(&ho_Image, ImageName);
        GetImageSize(ho_Image, &hv_Width, &hv_Height);
        SetPart(hv_WindowHandle, 0, 0, hv_Height, hv_Width);
        DispObj(ho_Image, HDevWindowStack::GetActive());
    }
    catch (HException &HDevExpDefaultException)
    {
        HTuple  hv_Exception;
        HDevExpDefaultException.ToHTuple(&hv_Exception);
    }
}

void Widget::on_clicked2(){
    qDebug() << "按下了2号按钮，打开相机";
    qle->setText("打开相机");
    timer->start(20);//定时器开始工作,参数影响帧率
    //Image Acquisition 01: Code generated by Image Acquisition 01
    /*
    OpenFramegrabber("DirectShow", 1, 1, 0, 0, 0, 0, "default", 8, "rgb", -1, "false",
                     "default", "[0] USB2.0 PC CAMERA", 0, -1, &hv_AcqHandle);*/

    try
    {
        int curIndex = cbox->currentIndex();

        OpenFramegrabber("DirectShow", 1, 1, 0, 0, 0, 0, "default", 8, "rgb", -1, "false",
                         "default", hv_ValueList[curIndex], 0, -1, &hv_AcqHandle);

        //SetFramegrabberParam(hv_AcqHandle, "brightness", 0);
        //SetFramegrabberParam(hv_AcqHandle, "contrast", 28);

        GrabImageStart(hv_AcqHandle, -1);

        //    在openwindow前先抓取一帧图片
        GrabImage(&ho_Image,hv_AcqHandle);
        btn3->setEnabled(true);
        btn2->setEnabled(false);
    }
    catch (HException &HDevExpDefaultException)
    {
        HTuple  hv_Exception;
        HDevExpDefaultException.ToHTuple(&hv_Exception);
    }


}

void Widget::on_clicked3(){
    qDebug() << "按下了3号按钮,关闭相机";
    qle->setText("关闭相机");
    timer->stop();
    CloseFramegrabber(hv_AcqHandle);
    btn3->setEnabled(false);
    btn2->setEnabled(true);
}

void Widget::camera()
{
    GrabImage(&ho_Image, hv_AcqHandle);
    GetImageSize(ho_Image, &hv_Width, &hv_Height);
    SetPart(hv_WindowHandle, 0, 0, hv_Height, hv_Width);
    if(HDevWindowStack::IsOpen())
    {
        DispObj(ho_Image,HDevWindowStack::GetActive());
    }
    //WaitSeconds(0.1);
}

void Widget::on_clicked4(){
    qDebug() << "按下了4号按钮，检测相机";

    try
    {
        InfoFramegrabber("DirectShow", "device", &hv_Information, &hv_ValueList);
        HString str1 = hv_Information.S();

        int num = hv_ValueList.Length();
        QString result = "检测到"+QString::number(num)+"个相机"+"\n"+str1.Text()+"\n";
        // HString str2 = "";
        cbox->clear();
        for (int i = 0; i < num; ++i) {
            HString str2 = hv_ValueList[i].S();
            cbox->addItem(QString(str2));
            result = result + str2.Text()+"\n";
        }

        qDebug()<<result;
        qle->setText(result);
        btn2->setEnabled(true);
    }
    catch (HException &HDevExpDefaultException)
    {
        HTuple  hv_Exception;
        HDevExpDefaultException.ToHTuple(&hv_Exception);
        qle->setText("没检测到相机");
    }
}

编译运行

原文链接：https://blog.csdn.net/qq_16377055/article/details/120018495