Posted on 2011-08-04 21:29
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轉(zhuǎn)載隨筆 、
QML
1.導(dǎo)出Person類，并且一個(gè)Job類，Job類包含一個(gè)Person的指針
2.具體導(dǎo)出過程
1.通過屬性來實(shí)現(xiàn)，具體的請(qǐng)看代碼
3.具體代碼
// person.h
#ifndef PERSON_H
#define PERSON_H
#include <QObject>
#include <QColor>
class Person : public QObject
{
Q_OBJECT
// 設(shè)置設(shè)置屬性的名字是 name
// 對(duì)應(yīng)讀取函數(shù)名字 getName
// 對(duì)應(yīng)寫函數(shù)名字 setName
// 屬性發(fā)生改變后發(fā)送信號(hào) sendNameChange
Q_PROPERTY(QString name READ getName WRITE setName NOTIFY sendNameChange)
// 設(shè)置設(shè)置屬性的名字是 age
// 對(duì)應(yīng)讀取函數(shù)名字 getAge
// 對(duì)應(yīng)寫函數(shù)名字 setAge
// 屬性發(fā)生改變后發(fā)送信號(hào) sendAgeChange
Q_PROPERTY(int age READ getAge WRITE setAge NOTIFY sendAgeChange)
public:
explicit Person(QObject *parent = 0);
QString getName(void) const;
void setName(const QString& name);
int getAge(void);
void setAge(int age);
signals:
void sendNameChange(void);
void sendAgeChange(void);
private:
QString m_Name;
int m_Age;
};
/*
設(shè)想一份工作給予一個(gè)人
*/
class Job : public QObject
{
Q_OBJECT
Q_PROPERTY(Person *per READ getPerson WRITE setPerson NOTIFY sendPersonChange)
Q_PROPERTY(QString jn READ getJobName WRITE setJobName NOTIFY sendJobNameChange)
public:
explicit Job(QObject *parent = 0);
~Job();
void setPerson(Person *per);
Person *getPerson(void) const;
void setJobName(const QString & jobname);
QString getJobName(void) const;
signals:
void sendPersonChange();
void sendJobNameChange();
private:
Person *m_Person;
QString m_JobName;
};
#endif // PERSON_H |
// person.cpp
#include "person.h"
//---------------------------------
//
Person::Person(QObject *parent) :
QObject(parent), m_Name("unknow"), m_Age(0)
{
}
//---------------------------------
//
QString Person::getName(void) const
{
return m_Name;
}
//---------------------------------
//
void Person::setName(const QString& name)
{
m_Name = name;
emit sendNameChange();
}
//---------------------------------
//
int Person::getAge(void)
{
return m_Age;
}
//---------------------------------
//
void Person::setAge(int age)
{
m_Age = age;
emit sendAgeChange();
}
//---------------------------------
//
Job::Job(QObject *parent)
:QObject(parent), m_Person(0), m_JobName("unknown")
{
}
//---------------------------------
//
Job::~Job()
{
}
//---------------------------------
//
void Job::setPerson(Person *per)
{
m_Person = per;
emit sendPersonChange();
}
//---------------------------------
//
Person *Job::getPerson(void) const
{
return m_Person;
}
//---------------------------------
//
void Job::setJobName(const QString & jobname)
{
m_JobName = jobname;
emit sendJobNameChange();
}
//---------------------------------
//
QString Job::getJobName(void) const
{
return m_JobName;
} |
// main.cpp
#include <QtGui/QApplication>
#include <QtDeclarative/QDeclarativeView>
#include <QtDeclarative/QDeclarativeEngine>
#include <QtDeclarative/QDeclarativeComponent>
#include "person.h"
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
qmlRegisterType<Person>("People",1,0,"Person");
//qmlRegisterType<Person>();
qmlRegisterType<Job>("People",1,0,"Job");
QDeclarativeView qmlView;
qmlView.setSource(QUrl::fromLocalFile("../UICtest/UICtest.qml"));
qmlView.show();
return a.exec();
} |
// UICtest.qml
import Qt 4.7
import People 1.0 //如果是qmlRegisterType<Person>(); 導(dǎo)出就可以注釋這條
Rectangle {
width: 640
height: 480
Job {
id: jobA;
jn: "Learn";
per: Person { id: ps; name: "Luly"; age: 25; }
}
// 顯示這份工作的一些信息
Rectangle{
x: 100; y: 100;
width: 100; height: 100;
Text { text: "Job name:" + jobA.jn; }
Text { y: 20; text: "Person name:" + ps.name; }
Text { y: 40; text: "Person age:" + ps.age; }
}
MouseArea{
anchors.fill: parent;
onClicked:{
// 我要改變工作的名字 工作人的信息
jobA.jn = "Clean House";
ps.name = "Tom";
ps.age = 30;
}
}
} |
說明:
主要是導(dǎo)出了兩個(gè)類Person和Job, Job 包含一個(gè)Person的指針，這樣后，可以看到
在QML中，我們需要給予Job對(duì)象一個(gè)Person來盡心賦值。