C++ Qt之halcon读取像素项目过程详解

项目环境：win10，qt5.14，halcon20

功能：1.读取指定图像2.读取指定目录下的图像

项目配置文件

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
 
#win32和unix下的include实际上是一样的
win32:{
   #halcon配置代码，已经将include、lib拷贝到项目之下
   libs += -l$$pwd/halcon/win/lib/x64-win64/ -lhalcon
   libs += -l$$pwd/halcon/win/lib/x64-win64/ -lhalconc
   libs += -l$$pwd/halcon/win/lib/x64-win64/ -lhalconcpp
   libs += -l$$pwd/halcon/win/lib/x64-win64/ -lhalconcppxl
   libs += -l$$pwd/halcon/win/lib/x64-win64/ -lhalconcxl
   libs += -l$$pwd/halcon/win/lib/x64-win64/ -lhalconxl
   libs += -l$$pwd/halcon/win/lib/x64-win64/ -lhdevenginecpp
   libs += -l$$pwd/halcon/win/lib/x64-win64/ -lhdevenginecppxl
   libs += -l$$pwd/halcon/win/lib/x64-win64/ -llibiomp5md
 
   #includepath += $$pwd/halcon/win/include
   #dependpath += $$pwd/halcon/win/include
 
   includepath += $$pwd/halcon/linux/include
   dependpath += $$pwd/halcon/linux/include
}
 
 
unix:{
   libs += -l$$pwd/halcon/linux/lib/x64-linux -lhalcon
   libs += -l$$pwd/halcon/linux/lib/x64-linux -lhalconc
   libs += -l$$pwd/halcon/linux/lib/x64-linux -lhalconcpp
   libs += -l$$pwd/halcon/linux/lib/x64-linux -lhalconcppxl
   libs += -l$$pwd/halcon/linux/lib/x64-linux/ -lhalconcxl
   libs += -l$$pwd/halcon/linux/lib/x64-linux -lhalconxl
   libs += -l$$pwd/halcon/linux/lib/x64-linux -lhdevenginecpp
   libs += -l$$pwd/halcon/linux/lib/x64-linux -lhdevenginecppxl
 
   includepath += $$pwd/halcon/linux/include
   dependpath += $$pwd/halcon/linux/include
}

头文件

#ifndef widget_h
#define widget_h
 
#include <qwidget>
#include <qlabel>
#include <qpushbutton>
#include <qgroupbox>
#include <qradiobutton>
#include <qstackedwidget>
#include <qlineedit>
#include <qstyle>
#include <qdebug>
#include <qstandarditemmodel>
#include <qtabwidget>
#include <qtablewidget>
#include <qheaderview>
#include <qtablewidgetitem>
#include <qfiledialog>
 
#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 *image_label;
 
    htuple  hv_windowhandle;
    //htuple  hv_acqhandle;
    hobject  ho_image;
    htuple  hv_width, hv_height;
    //hlong windid;
    hlong  mainwndid;
 
    qgroupbox *groupbox1;
 
    qradiobutton *radio1;
    qradiobutton *radio2;
 
    qstackedwidget *stackedwidget;
    qwidget *page1;
    qwidget *page2;
 
    qlineedit *ledit1;
    qpushbutton *btn1;
 
    qlineedit *ledit2;
    qpushbutton *btn2;
    qtablewidget *tablewidget;
    qtablewidgetitem *item0;
    qstring file_path;
    qstringlist filenamelist;
    //qstringlist fullfilename;
 
    qpushbutton *btn3;
 
 
 
    void create_widget();
 
    void filelist_refresh();
    qstringlist readfilelist;
 
    qstring file_name1;
    qstring file_name2;
 
    int imageno=0;
 
 
 
 
    /*
    enum celltype{ct_isused,ct_rowno};
    enum fieldcolnum{col_isused,col_rowno};
    qlabel *labcellindex;
    qlabel *labcelltype;
    qlabel *labid;
    void createitemsarow(bool isused,int rowno,qstring filename);
    */
 
 
private slots:
    void on_radiobutton1_clicked();
    void on_radiobutton2_clicked();
 
    void on_btn1_clicked();
    void on_btn2_clicked();
    void on_btn3_clicked();
    //void on_item_clicked(qtablewidgetitem * item);
    void on_checkchangestate(int, int);
    //void slotheaderclicked(int);
 
 
 
};
#endif // widget_h

c++文件

#include "widget.h"
 
widget::widget(qwidget *parent)
    : qwidget(parent)
{
    create_widget();
 
    connect(radio1,signal(clicked(bool)),this,slot(on_radiobutton1_clicked()));
    connect(radio2,signal(clicked(bool)),this,slot(on_radiobutton2_clicked()));
 
    connect(btn1,signal(clicked(bool)),this,slot(on_btn1_clicked()));
    connect(btn2,signal(clicked(bool)),this,slot(on_btn2_clicked()));
    connect(btn3,signal(clicked(bool)),this,slot(on_btn3_clicked()));
 
    connect(tablewidget, signal(cellclicked(int, int)), this, slot(on_checkchangestate(int, int)));
    //connect(tablewidget->horizontalheader(), signal(sectionclicked(int)), this, slot(slotheaderclicked(int)));
 
 
 
}
 
widget::~widget()
{
}
 
void widget::create_widget()
{
    this->setfixedsize(916,547);
    this->setwindowtitle("图像读取");
 
    image_label =new qlabel(this);
    image_label->setgeometry(290,20,611,461);
    mainwndid = (hlong)this->image_label->winid();
    setwindowattr("background_color","gray");//设置背景为灰色
    openwindow(0, 0, image_label->width(), image_label->height(), mainwndid,
               "visible", "", &hv_windowhandle);
    hdevwindowstack::push(hv_windowhandle);
 
    groupbox1 = new qgroupbox(this);
    groupbox1->setgeometry(10,20,261,121);
    qlabel *label1 =new qlabel(this->groupbox1);
    label1->settext("采集模式");
    label1->setgeometry(0,0,261,21);
 
    radio1 = new qradiobutton(tr("指定图像"),this->groupbox1);
    radio2 = new qradiobutton(tr("文件目录"),this->groupbox1);
    radio1->setgeometry(50,40,100,20);
    radio2->setgeometry(50,70,100,20);
    radio1->setchecked(true);
 
 
    stackedwidget = new qstackedwidget(this);
    stackedwidget->setgeometry(20,160,251,301);
 
    page1 = new qwidget();
    qlabel *label2 =new qlabel(page1);
    label2->setgeometry(0,0,100,20);
    label2->settext("指定图片");
    ledit1 = new qlineedit(page1);
    //ledit1->setgeometry(30,130,150,30);
    ledit1->setgeometry(0,130,200,30);
    ledit1->setreadonly(true);
    btn1 = new qpushbutton(page1);
    btn1->setgeometry(200,130,30,30);
    btn1->seticon(style()->standardicon(qstyle::sp_filedialogcontentsview));
 
    page2 = new qwidget();
    qlabel *label3 =new qlabel(page2);
    label3->setgeometry(0,0,100,20);
    label3->settext("文件目录");
 
 
    ledit2 = new qlineedit(page2);
    ledit2->setgeometry(30,30,150,30);
    btn2 = new qpushbutton(page2);
    btn2->setgeometry(180,30,30,30);
    btn2->seticon(style()->standardicon(qstyle::sp_filedialogcontentsview));
 
    //qtablewidget *tablewidget = new qtablewidget(10,3,page2);
    tablewidget = new qtablewidget(page2);
    //qtablewidget *tablewidget = new qtablewidget(page2);
    tablewidget->setrowcount(0);
    tablewidget->setcolumncount(3);
    //page2->addwidget();
    tablewidget->setgeometry(0,70,251,230);
    //tablewidget->resizecolumnstocontents();
    //tablewidget->resizerowstocontents();
    //tablewidget->setcolumnwidth(3,200);
    tablewidget->setcolumnwidth(0,50);
    tablewidget->setcolumnwidth(1,50);
    //tablewidget->setcolumnwidth(2,qheaderview::stretch);
    tablewidget->setcolumnwidth(2,120);
    //tablewidget->setrowheight(3,60);
    tablewidget->verticalheader()->setvisible(false); //隐藏列表头
    //tablewidget->horizontalheader()->setvisible(false); //隐藏行表头
 
    tablewidget->show();
    qstringlist headertext;
    headertext<<"选取"<<"索引"<<"文件名";
    tablewidget->sethorizontalheaderlabels(headertext);
    tablewidget->setedittriggers(qabstractitemview::noedittriggers);
    tablewidget->horizontalheader()->setdisabled(true);//禁止用户拖动改变列宽
    tablewidget->verticalheader()->setdisabled(true);//设置行不能拖动
    //tablewidget->setenabled(false);
 
    stackedwidget->addwidget(page1);
    stackedwidget->addwidget(page2);
 
    btn3 = new qpushbutton(this);
    btn3->setgeometry(540,505,91,31);
    btn3->settext("执行");
 
 
}
 
void widget::on_radiobutton1_clicked()
{
    qdebug()<<"1";
    stackedwidget->setcurrentindex(0);
}
 
void widget::on_radiobutton2_clicked()
{
    qdebug()<<"2";
    stackedwidget->setcurrentindex(1);
}
 
void widget::on_btn1_clicked()
{
    qdebug()<<"btn1";
    qdebug() << "按下了1号按钮，读取图片";
    file_name1 = qfiledialog::getopenfilename(this,tr("open  file"),".",tr("video files(*.bmp *.jpg *.pbm *.pgm *.png *.ppm *.xbm *.xpm *.jpeg)"));
 
    ledit1->settext(file_name1);
 
 
}
 
void widget::on_btn2_clicked()
{
    //imageno = 0;
    qdebug()<<"btn2";
    qdebug() << "按下了2号按钮，读取图片";
    try
    {
 
        file_path = qfiledialog::getexistingdirectory(this,tr("open directory"),"./");
        qdebug() << file_path;
        ledit2->settext(file_path);
 
        qdir dir(file_path);
 
        //  cout<<"bian li kai shi "<<endl;
        if(!dir.exists()){
            qdebug()<<"文件路径错误";
            //return false;
        }
        dir.setfilter(qdir::files | qdir::nosymlinks);
        qstringlist filters;
        filters <<"*.bmp"<<"*.jpg"<<"*.pbm"<<"*.pgm"<<"*.png"<<"*.ppm"<<"*.xbm"<<"*.xpm"<<"*.jpeg";
        dir.setnamefilters(filters);
 
        filenamelist = dir.entrylist();
        qdebug()<<filenamelist;
 
 
        ///
        tablewidget->clearcontents();
        tablewidget->setrowcount(filenamelist.count());
 
        for(int i=0;i<filenamelist.count();i++)
        {
            qdebug()<<filenamelist[i];
            //qtablewidgetitem *item = new qtablewidgetitem();
            item0 = new qtablewidgetitem();
            item0->setcheckstate(qt::checked);
 
            tablewidget->setitem(i, 0, item0);
            qtablewidgetitem *item1 = new qtablewidgetitem(qstring::number(i));
            tablewidget->setitem(i, 1, item1);
            qtablewidgetitem *item2 = new qtablewidgetitem(filenamelist[i]);
            tablewidget->setitem(i, 2, item2);
 
        }
 
        filelist_refresh();
 
 
 
 
    }
    catch (hexception &hdevexpdefaultexception)
    {
        htuple  hv_exception;
        hdevexpdefaultexception.tohtuple(&hv_exception);
    }
 
}
 
void widget::on_btn3_clicked(){
    qdebug() << "按下了3号按钮，读取图片";
 
    clearwindow(hv_windowhandle);
    if(radio1->ischecked())
    {
        //显示指定图片
        try
        {
            //qstring file_name;
            qstring image;
            if(file_name1.isnull()){
                image = "";
 
            }else{
                image=file_name1;
            }
            readimage(&ho_image,image.tolatin1().data());
            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);
        }
 
    }else if(radio2->ischecked())
    {
        //显示文件目录下选取图像]
        if(imageno>=readfilelist.count()){
            imageno=0;
        }
        try
        {
            //qstring file_name;
            qstring image;
            if(readfilelist.isempty()){
                image="";
            }else{
                image = readfilelist[imageno];
            }
            readimage(&ho_image,image.tolatin1().data());
            getimagesize(ho_image, &hv_width, &hv_height);
            setpart(hv_windowhandle, 0, 0, hv_height, hv_width);
            dispobj(ho_image, hdevwindowstack::getactive());
            imageno++;
 
        }
        catch (hexception &hdevexpdefaultexception)
        {
            htuple  hv_exception;
            hdevexpdefaultexception.tohtuple(&hv_exception);
        }
    }
 
 
 
 
 
}
 
 
void widget::on_checkchangestate(int value1, int value2){
 
    if(value2==0&&tablewidget->item(value1, value2)->checkstate() == qt::checked)
    {
        qdebug()<<"选中";
    }
    else if(value2==0&&tablewidget->item(value1, value2)->checkstate() == qt::unchecked)
    {
        qdebug()<<"未选中";
    }
    filelist_refresh();
}
 
void widget::filelist_refresh(){
    imageno = 0;
    readfilelist.clear();
    for(int i=0;i<tablewidget->rowcount();i++){
        if(tablewidget->item(i, 0)->checkstate() == qt::checked){
            readfilelist.append(file_path+"/"+filenamelist[i]);
        }
    }
    qdebug()<<readfilelist;
 
    //readfilelist
}

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