Qt通用属性工具：随心定义，随时可见（二）-编程知识

Qt通用属性工具：随心定义，随时可见（二）

一、话接上篇

本片咱们话接上篇《Qt通用属性工具：随心定义，随时可见（一）》，讲讲自定义的对象属性如何绑定通用属性编辑工具。

二、破杯二两酒

1、一颗小花生

同样，我们先准备一个比较简单的demo，先看看效果。
在这里插入图片描述
这里我们自定义了一个Student 类型，为它咱们定义了三个属性，
id : 只读。在上图的演示中，我们也可以看到，我尝试对id进行修改，实际并没有生效。这里实际可以进一步优化通用属性编辑器，当只读属性时，直接灰显，不允许修改可能更好(后续优化)
name : 可读、可写，当name发生变化时，我们还让他发出一个nameChanged的信号。从上图我们修改名字，对应绑定的槽函数的打印输出信息可以看到。喔嚯，MVC，真是爽歪歪。
age : 可读可写。修改值，自然也可以生效

2、一碟花生米

#include "widget.h"
#include <QApplication>
#include <QObject>
#include "QtPropertyEditor.h"
#include <QHBoxLayout>
#include <QDebug>class Student : public QObject
{Q_OBJECTQ_PROPERTY(QString id READ id)Q_PROPERTY(QString name READ name WRITE setName NOTIFY nameChanged)Q_PROPERTY(int age READ age WRITE setAge)
public:Student():_id("xxoo"){}Student(const QString id) : _id(id){}Student(const QString id,const QString name): _id(id),_name(name){}Student(const QString id,const QString name,const int age): _id(id),_name(name),_age(age){}Student(const Student& that){this->_name = that.name();this->_age = that.age();}const QString id() const { return _id;}const QString name() const {return _name;}void setName(const QString& name){ _name = name; nameChanged(name);}void setName(const QString&& name){_name = name;}const int age() const { return _age;}void setAge(const int& age){ _age = age;}void setAge(const int&& age){ _age = age;}
signals:void nameChanged(QString name);private:const QString _id;QString _name;int _age;
};
Q_DECLARE_METATYPE(Student)class StudentList: public QObject
{Q_OBJECTQ_PROPERTY(QList<Student> students READ students WRITE setStudents)Q_PROPERTY(QString desc READ desc WRITE setDesc)
public:StudentList(){}StudentList(const QList<Student> lstu ):_students(lstu){}StudentList(const StudentList& that){this->_students = that.students();}const QList<Student> students() const { return _students;}void setStudents(const  QList<Student>& lstu){ _students = lstu;}void setStudents(const  QList<Student>&& lstu){ _students = lstu;}const QString desc() const { return _desc;}void setDesc(const QString& desc ){ _desc = desc;}void setDesc(const QString && desc){ _desc = desc;}private:QList<Student> _students;QString _desc;
};
Q_DECLARE_METATYPE(StudentList)int main(int argc, char *argv[])
{QApplication a(argc, argv);qRegisterMetaType<Student>("Student");qRegisterMetaType<StudentList>("StudentList");// OjbectStudent stu0("1001","zhaolei",22);stu0.setObjectName(QStringLiteral("学生0"));Student stu1("1002","cangjingkong",18); // 苍老师用永远18，没人能有意见吧stu1.setObjectName(QStringLiteral("学生1"));QList<Student> l;l.append(stu0);l.append(stu1);StudentList lstu(l);lstu.setDesc(QStringLiteral("三年一班学生信息"));for(const auto& stu : lstu.students()){QObject::connect(&stu,&Student::nameChanged,[](QString name){qDebug() << __FUNCTION__ << __LINE__ << "  namechanged : " << name;});}// UI bind ObjectQtPropertyEditor::QtPropertyTreeEditor tree_editor;tree_editor.treeModel.setMaxDepth(4);tree_editor.treeModel.propertyNames = QtPropertyEditor::getPropertyNames(&lstu);tree_editor.treeModel.setObject(&lstu);tree_editor.resizeColumnsToContents();tree_editor.show();return a.exec();
}#include "main.moc"